K Number
K182371
Device Name
da Vinci SP Surgical System, EndoWrist SP Instruments, and Accessories
Date Cleared
2019-03-14

(195 days)

Product Code
Regulation Number
876.1500
AI/MLSaMDIVD (In Vitro Diagnostic)TherapeuticDiagnosticis PCCP Authorized
Intended Use
The Intuitive Surgical® Endoscopic Instrument Control System (da Vinci SP® Surgical System, Model SP1098) is intended to assist in the accurate control of Intuitive Surgical EndoWrist SP® Instruments during urologic surgical procedures that are appropriate for a single port approach and transoral otolaryngology surgical procedures in the oropharynx restricted to benign tumors and malignant turnors classified as T1 and T2. The system is indicated for adult use. It is intended for use by trained physicians in an operating room environment in accordance with the representative, specific procedures set forth in the Professional Instructions for Use. Intuitive Surgical® Endo Wrist SP® Instruments are controlled by the da Vinci SP® Surgical System, Model SP1098, and include flexible endoscopes, blunt and sharp endoscopic dissectors, forceps/pick-ups, needle holders, endoscopic retractors, electrocautery and accessories for endoscopic manipulation of tissue, including grasping, cutting, blunt and sharp dissection, approximation, ligation, electrocautery, and suturing through a single port. The system is indicated for urologic surgical procedures that are appropriate for a single port approach and transoral otolaryngology surgical procedures in the oropharynx restricted to benign tumors classified as T1 and T2. The system is indicated for adult use. It is intended for use by trained physicians in an operating room environment in accordance with the representative, specific procedures set forth in the Professional Instructions for Use.
Device Description
The da Vinci SP Surgical System, Model SP1098 is a software-controlled, electromechanical system designed for surgeons to perform single port minimally invasive surgery. The Model SP1098 Surgical System consists of a Surgeon Console, a Patient Cart, and a Vision Cart, and is used with a Camera Instrument, EndoWrist SP Instruments, and Accessories. The surgeon seated at the Surgeon Console controls all movement of the EndoWrist SP Instruments and Camera Instrument by using two Master Controls and a set of foot pedals. The surgeon views the three-dimensional endoscopic image on a High Resolution Stereo Viewer (3D Viewer), which provides him/her a view of patient anatomy and surgical instrumentation, along with icons and other user interface features. The Vision Cart includes the supporting electronic and video processing equipment for the system. The Patient Cart is positioned at the operating room table and has four instrument drives on a single arm that is positioned over the target patient anatomy. A Camera Instrument attaches onto one instrument drive and provides the surgeon a high resolution, threedimensional view of the patient anatomy. A suite of EndoWrist SP Instruments can be attached to and detached from the other three instrument drives, enabling the surgeon to perform various surgical tasks. The Camera Instrument and up to three surgical instruments can be used simultaneously, entering the patient through a single port. Accessories including a cannula, an obturator, a seal, an entry guide, disposable tips for selected instruments, instrument sheaths, and a drape are needed to perform procedures with the system. The EndoWrist SP Instruments come in various configurations such as graspers, scissors, and needle drivers. The EndoWrist SP instruments have a unique articulating design at the distal tip that mimics the human wrist, shoulder, and elbow to enable triangulation and X-Y-Z movement of the instrument in the body. Each instrument is used to perform specific surgical tasks such as grasping, suturing, tissue manipulation, and electrocautery. The EndoWrist SP Instruments can be used only with the SP1098 Surgical System. The instruments are reusable. They are programmed with a maximum number of surgical procedures based upon life testing. The EndoWrist SP Camera Instrument is a reusable endoscope that provides a stereo image of the surgical site. Like the instruments, the distal end includes multiple joints that provide the flexibility needed for use with a single-port system.
More Information

No
The summary describes a robotic surgical system controlled directly by a surgeon. There is no mention of AI or ML being used for image analysis, surgical planning, or automated control. The system is described as "software-controlled, electromechanical" and the surgeon "controls all movement".

Yes
The device is clearly indicated for surgical procedures, which are therapeutic interventions. It assists in performing tasks like grasping, cutting, dissection, ligation, electrocautery, and suturing, all aimed at treating specific medical conditions.

No

The device is an Endoscopic Instrument Control System for single port minimally invasive surgery, primarily used for surgical procedures and tissue manipulation, not for diagnosis.

No

The device description explicitly states that the da Vinci SP Surgical System is a "software-controlled, electromechanical system" and lists several hardware components including a Surgeon Console, Patient Cart, Vision Cart, Camera Instrument, and EndoWrist SP Instruments.

Based on the provided information, this device is not an IVD (In Vitro Diagnostic).

Here's why:

  • Intended Use: The intended use clearly states that the system is designed to "assist in the accurate control of Intuitive Surgical EndoWrist SP® Instruments during urologic surgical procedures... and transoral otolaryngology surgical procedures". This describes a surgical robotic system used for performing procedures on the patient's body.
  • Device Description: The description details a surgical system with a surgeon console, patient cart, instruments, and a camera. These components are used for manipulating tissues and providing visualization during surgery.
  • Lack of In Vitro Testing: The description of performance studies includes bench testing (cleaning validation), animal and cadaver testing, and a clinical study on human subjects. There is no mention of testing biological samples outside of the body for diagnostic purposes.
  • No Diagnostic Claims: The device's function is to facilitate surgical procedures, not to diagnose diseases or conditions based on analysis of biological samples.

IVD devices are specifically designed to examine specimens derived from the human body (like blood, urine, tissue) to provide information for diagnosis, monitoring, or screening. This device does not perform such functions.

N/A

Intended Use / Indications for Use

The Intuitive Surgical® Endoscopic Instrument Control System (da Vinci SP® Surgical System, Model SP1098) is intended to assist in the accurate control of Intuitive Surgical EndoWrist SP® Instruments during urologic surgical procedures that are appropriate for a single port approach and transoral otolaryngology surgical procedures in the oropharynx restricted to benign tumors and malignant turnors classified as T1 and T2. The system is indicated for adult use. It is intended for use by trained physicians in an operating room environment in accordance with the representative, specific procedures set forth in the Professional Instructions for Use.

EndoWrist SP® Instruments:
Intuitive Surgical® EndoWrist SP® Instruments are controlled by the da Vinci SP® Surgical System, Model SP1098, and include flexible endoscopes, blunt and sharp endoscopic dissectors, scissors, forceps/pick-ups, needle holders, endoscopic retractors, electrocautery and accessories for endoscopic manipulation of tissue, including grasping, cutting, blunt and sharp dissection, approximation, ligation, electrocautery, and suturing through a single port. The system is indicated for urologic surgical procedures that are appropriate for a single port approach and transoral otolaryngology surgical procedures in the oropharynx restricted to benign tumors and malignant tumors classified as T1 and T2. The system is indicated for adult use. It is intended for use by trained physicians in an operating room environment in accordance with the representative, specific procedures set forth in the Professional Instructions for Use.

Product codes (comma separated list FDA assigned to the subject device)

NAY

Device Description

The da Vinci SP Surgical System, Model SP1098 is a software-controlled, electromechanical system designed for surgeons to perform single port minimally invasive surgery. The Model SP1098 Surgical System consists of a Surgeon Console, a Patient Cart, and a Vision Cart, and is used with a Camera Instrument, EndoWrist SP Instruments, and Accessories. The surgeon seated at the Surgeon Console controls all movement of the EndoWrist SP Instruments and Camera Instrument by using two Master Controls and a set of foot pedals. The surgeon views the three-dimensional endoscopic image on a High Resolution Stereo Viewer (3D Viewer), which provides him/her a view of patient anatomy and surgical instrumentation, along with icons and other user interface features. The Vision Cart includes the supporting electronic and video processing equipment for the system. The Patient Cart is positioned at the operating room table and has four instrument drives on a single arm that is positioned over the target patient anatomy. A Camera Instrument attaches onto one instrument drive and provides the surgeon a high resolution, three-dimensional view of the patient anatomy. A suite of EndoWrist SP Instruments can be attached to and detached from the other three instrument drives, enabling the surgeon to perform various surgical tasks. The Camera Instrument and up to three surgical instruments can be used simultaneously, entering the patient through a single port. Accessories including a cannula, an obturator, a seal, an entry guide, disposable tips for selected instruments, instrument sheaths, and a drape are needed to perform procedures with the system. The EndoWrist SP Instruments come in various configurations such as graspers, scissors, and needle drivers. The EndoWrist SP instruments have a unique articulating design at the distal tip that mimics the human wrist, shoulder, and elbow to enable triangulation and X-Y-Z movement of the instrument in the body. Each instrument is used to perform specific surgical tasks such as grasping, suturing, tissue manipulation, and electrocautery. The EndoWrist SP Instruments can be used only with the SP1098 Surgical System. The instruments are reusable. They are programmed with a maximum number of surgical procedures based upon life testing. The EndoWrist SP Camera Instrument is a reusable endoscope that provides a stereo image of the surgical site. Like the instruments, the distal end includes multiple joints that provide the flexibility needed for use with a single-port system.

Mentions image processing

Yes

Mentions AI, DNN, or ML

Not Found

Input Imaging Modality

Endoscopic image

Anatomical Site

oropharynx

Indicated Patient Age Range

adult use

Intended User / Care Setting

Trained physicians in an operating room environment.

Description of the training set, sample size, data source, and annotation protocol

Not Found

Description of the test set, sample size, data source, and annotation protocol

Not Found

Summary of Performance Studies (study type, sample size, AUC, MRMC, standalone performance, key results)

Performance test data included bench, animal and cadaver testing, and a confirmatory clinical study to demonstrate that the subject device is substantially equivalent to the legally marketed predicate device.

Bench Performance Testing: The addition of transoral otolaryngology surgical procedures to the SP1098 indications did not change any of the safety or performance requirements that were previously verified and/or validated for the SP1098 (K173906). Cleaning validation with a soil representative of TORS was performed for Camera Instrument, Surgical Instruments, and Accessories.

Cadaver and Animal Performance Testing: Comparative animal and cadaver testing was conducted to demonstrate the equivalence of the SP1098 System to the IS3000 System for performing transoral otolaryngology surgical (TORS) procedures. Cadavers were used to demonstrate device performance for anatomical access and reach. Live animals were used to assess safety and performance in cases where a live tissue model was appropriate. Three (3) independent practicing surgeons participated in a pre-clinical study using the SP1098 system to perform a set of transoral otolaryngology surgical procedures using both the SP1098 and the IS3000. Each surgeon performed four (4) procedures in cadavers and two (2) procedures in a live porcine model with each system, for a total of eighteen (18) procedures performed with each system. Surgeons completed questionnaires that evaluated their ability to perform surgical tasks with the two systems. Surgical success criteria included resection volume, boundaries, critical anatomy identification, and hemostasis.

Clinical Study: A prospective, multicenter, single-arm clinical study (NCT03049280) was conducted under an investigational device exemption (IDE #G160251) to confirm the safety and performance of the SP1098 da Vinci SP Surgical System, Instruments and Accessories in transoral robotic surgery (TORS) for malignant oropharyngeal tumors classified as T1 and T2.
Sample size: 33 subjects were enrolled at three institutions in the United States.
Safety was determined by incidence rate of device-related serious adverse events. Performance was determined by conversion rate from da Vinci SP to an open approach required to complete the indicated procedure.
Results: Device-related serious adverse event rate was 0%, and the conversion rate was 0%. No intraoperative complications were observed, and the safety endpoint was met. Operative time (mean ± SD) was 49.6 ± 33.1 min. Estimated blood loss (mean ± SD) was 12.2 ± 18.7 mL. Transfusion rate was 0%. Length of hospital stay (mean ± SD) was 4.2 ± 1.9 days. Rates of positive surgical margins was 1 (3.0%). Readmission rate was 3 (9.1%). Reoperation rate was 2 (6.1%). Mortality rate was 0%. Postoperative complications rates (non-device related) was 8 (24.2%).

Clinical parameters of the study were also compared to published clinical data (2013-2018) on the da Vinci Si Surgical System for TORS. Data from thirteen (13) publications (N=9315) were used for comparison. The comparison demonstrated that the point estimate of all 9 parameters from the da Vinci SP study fell within or below the 95% confidence intervals calculated from the published clinical literature on da Vinci Si. These parameters included: operative time, estimated blood loss, transfusion rate, length of hospital stay, conversion rate from TORS to open, mortality rate, readmission rate, reoperation rate, and post-operative complications rate.

Key Metrics (Sensitivity, Specificity, PPV, NPV, etc.)

Clinical Study:
Device-related serious adverse event rate: 0%
Conversion rate: 0%
Operative time (mean ± SD): 49.6 ± 33.1 min
Estimated blood loss (mean ± SD): 12.2 ± 18.7 mL
Transfusion rate: 0%
Length of hospital stay (mean ± SD): 4.2 ± 1.9 days
Rates of positive surgical margins: 1 (3.0%)
Readmission rate: 3 (9.1%)
Reoperation rate: 2 (6.1%)
Mortality rate: 0%
Postoperative complications rates (non-device related): 8 (24.2%)

Predicate Device(s): If the device was cleared using the 510(k) pathway, identify the Predicate Device(s) K/DEN number used to claim substantial equivalence and list them here in a comma separated list exactly as they appear in the text. List the primary predicate first in the list.

K173906, K090993

Reference Device(s): Identify the Reference Device(s) K/DEN number and list them here in a comma separated list exactly as they appear in the text.

Not Found

Predetermined Change Control Plan (PCCP) - All Relevant Information for the subject device only (e.g. presence / absence, what scope was granted / cleared under the PCCP, any restrictions, etc).

Not Found

§ 876.1500 Endoscope and accessories.

(a)
Identification. An endoscope and accessories is a device used to provide access, illumination, and allow observation or manipulation of body cavities, hollow organs, and canals. The device consists of various rigid or flexible instruments that are inserted into body spaces and may include an optical system for conveying an image to the user's eye and their accessories may assist in gaining access or increase the versatility and augment the capabilities of the devices. Examples of devices that are within this generic type of device include cleaning accessories for endoscopes, photographic accessories for endoscopes, nonpowered anoscopes, binolcular attachments for endoscopes, pocket battery boxes, flexible or rigid choledochoscopes, colonoscopes, diagnostic cystoscopes, cystourethroscopes, enteroscopes, esophagogastroduodenoscopes, rigid esophagoscopes, fiberoptic illuminators for endoscopes, incandescent endoscope lamps, biliary pancreatoscopes, proctoscopes, resectoscopes, nephroscopes, sigmoidoscopes, ureteroscopes, urethroscopes, endomagnetic retrievers, cytology brushes for endoscopes, and lubricating jelly for transurethral surgical instruments. This section does not apply to endoscopes that have specialized uses in other medical specialty areas and that are covered by classification regulations in other parts of the device classification regulations.(b)
Classification —(1)Class II (special controls). The device, when it is an endoscope disinfectant basin, which consists solely of a container that holds disinfectant and endoscopes and accessories; an endoscopic magnetic retriever intended for single use; sterile scissors for cystoscope intended for single use; a disposable, non-powered endoscopic grasping/cutting instrument intended for single use; a diagnostic incandescent light source; a fiberoptic photographic light source; a routine fiberoptic light source; an endoscopic sponge carrier; a xenon arc endoscope light source; an endoscope transformer; an LED light source; or a gastroenterology-urology endoscopic guidewire, is exempt from the premarket notification procedures in subpart E of part 807 of this chapter subject to the limitations in § 876.9.(2) Class I for the photographic accessories for endoscope, miscellaneous bulb adapter for endoscope, binocular attachment for endoscope, eyepiece attachment for prescription lens, teaching attachment, inflation bulb, measuring device for panendoscope, photographic equipment for physiologic function monitor, special lens instrument for endoscope, smoke removal tube, rechargeable battery box, pocket battery box, bite block for endoscope, and cleaning brush for endoscope. The devices subject to this paragraph (b)(2) are exempt from the premarket notification procedures in subpart E of part 807of this chapter, subject to the limitations in § 876.9.

0

March 14, 2019

Image /page/0/Picture/1 description: The image contains the logo of the U.S. Food and Drug Administration (FDA). The logo consists of two parts: the Department of Health and Human Services logo on the left and the FDA logo on the right. The FDA logo features the letters "FDA" in a blue square, followed by the words "U.S. FOOD & DRUG ADMINISTRATION" in blue text.

Intuitive Surgical, Inc. Mike Yramategui Fellow Regulatory Engineer 1266 Kifer Road Sunnyvale, California 94086

Re: K182371

Trade/Device Name: da Vinci SP Surgical System, EndoWrist SP Instruments, and Accessories Regulation Number: 21 CFR 876.1500 Regulation Name: Endoscope and accessories Regulatory Class: Class II Product Code: NAY Dated: February 11, 2019 Received: February 12, 2019

Dear Mike Yramategui:

We have reviewed your Section 510(k) premarket notification of intent to market the device referenced above and have determined the device is substantially equivalent (for the indications for use stated in the enclosure) to legally marketed predicate devices marketed in interstate commerce prior to May 28, 1976, the enactment date of the Medical Device Amendments, or to devices that have been reclassified in accordance with the provisions of the Federal Food, Drug, and Cosmetic Act (Act) that do not require approval of a premarket approval application (PMA). You may, therefore, market the device, subject to the general controls provisions of the Act and the limitations described below. Although this letter refers to your product as a device, please be aware that some cleared products may instead be combination products. The 510(k) Premarket Notification Database located at

https://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfpmn/pmn.cfm identifies combination product submissions. The general controls provisions of the Act include requirements for annual registration, listing of devices, good manufacturing practice, labeling, and prohibitions against misbranding and adulteration. Please note: CDRH does not evaluate information related to contract liability warranties. We remind you, however, that device labeling must be truthful and not misleading.

The Office of Device Evaluation has determined that there is a reasonable likelihood that this device will be used for an intended use not identified in the proposed labeling and that such use could cause harm. Therefore, in accordance with Section 513(i)(1)(E) of the Act, the following limitation must appear in the Precautions/Warnings/Contraindications section of the device's labeling:

The safety and effectiveness of this device for use in the performance of general laparoscopic surgery procedures have not been established. This device is only intended to be used for single port

1

urological procedures and for transoral otolaryngology surgical procedures in the oropharynx for benign tumors and malignant tumors classified as T1 and T2 with the da Vinci EndoWrist SP Instruments and the da Vinci SP Surgical System (SP1098).

Please note that the above labeling limitations are required by Section 513(i)(1)(E) of the Act. Therefore, a new 510(k) is required before these limitations are modified in any way or removed from the device's labeling.

The FDA finding of substantial equivalence of your device to a legally marketed predicate device results in a classification for your device and permits your device to proceed to the market. This letter will allow you to begin marketing your device as described in your Section 510(k) premarket notification if the limitation statement described above is added to your labeling.

If your device is classified (see above) into either class II (Special Controls) or class III (PMA), it may be subject to additional controls. Existing major regulations affecting your device can be found in the Code of Federal Regulations, Title 21, Parts 800 to 898. In addition, FDA may publish further announcements concerning your device in the Federal Register.

Please be advised that FDA's issuance of a substantial equivalence determination does not mean that FDA has made a determination that your device complies with other requirements of the Act or any Federal statutes and regulations administered by other Federal agencies. You must comply with all the Act's requirements, including, but not limited to: registration and listing (21 CFR Part 807); labeling (21 CFR Part 801); medical device reporting of medical device-related adverse events) (21 CFR 803) for devices or postmarketing safety reporting (21 CFR 4, Subpart B) for combination products (see https://www.fda.gov/CombinationProducts/GuidanceRegulatoryInformation/ucm597488.htm); good manufacturing practice requirements as set forth in the quality systems (OS) regulation (21 CFR Part 820) for devices or current good manufacturing practices (21 CFR 4, Subpart A) for combination products; and, if applicable, the electronic product radiation control provisions (Sections 531-542 of the Act); 21 CFR 1000-1050.

Also, please note the regulation entitled, "Misbranding by reference to premarket notification" (21 CFR Part 807.97). For questions regarding the reporting of adverse events under the MDR regulation (21 CFR Part 803), please go to http://www.fda.gov/MedicalDevices/Safety/ReportaProblem/default.htm.

For comprehensive regulatory information about mediation-emitting products, including information about labeling regulations, please see Device Advice (https://www.fda.gov/MedicalDevices/DeviceRegulationandGuidance/) and CDRH Learn (http://www.fda.gov/Training/CDRHLearn).

2

Additionally, you may contact the Division of Industry and Consumer Education (DICE) to ask a question about a specific regulatory topic. See the DICE website (http://www.fda.gov/DICE) for more information or contact DICE by email (DICE@fda.hhs.gov) or phone (1-800-638-2041 or 301-796-7100).

Sincerely,

Angela C. Krueger -S for

William H. Maisel, MD, MPH Director Office of Device Evaluation Center for Devices and Radiological Health

Enclosure

3

Indications for Use

510(k) Number (if known)

K182371

Device Name

da Vinci SP Surgical System, Model SP1098, EndoWrist SP Instruments, and Accessories

Indications for Use (Describe)

da Vinci SP® Surgical System, Model SP1098:

The Intuitive Surgical® Endoscopic Instrument Control System (da Vinci SP® Surgical System, Model SP1098) is intended to assist in the accurate control of Intuitive Surgical EndoWrist SP® Instruments during urologic surgical procedures that are appropriate for a single port approach and transoral otolaryngology surgical procedures in the oropharynx restricted to benign tumors and malignant turnors classified as T1 and T2. The system is indicated for adult use. It is intended for use by trained physicians in an operating room environment in accordance with the representative, specific procedures set forth in the Professional Instructions for Use.

EndoWrist SP® Instruments:

Intuitive Surgical® Endo Wrist SP® Instruments are controlled by the da Vinci SP® Surgical System, Model SP1098, and include flexible endoscopes, blunt and sharp endoscopic dissectors, forceps/pick-ups, needle holders, endoscopic retractors, electrocautery and accessories for endoscopic manipulation of tissue, including grasping, cutting, blunt and sharp dissection, approximation, ligation, electrocautery, and suturing through a single port. The system is indicated for urologic surgical procedures that are appropriate for a single port approach and transoral otolaryngology surgical procedures in the oropharynx restricted to benign tumors classified as T1 and T2. The system is indicated for adult use. It is intended for use by trained physicians in an operating room environment in accordance with the representative, specific procedures set forth in the Professional Instructions for Use.

Type of Use (Select one or both, as applicable)

Prescription Use (Part 21 CFR 801 Subpart D)
Over-The-Counter Use (21 CFR 801 Subpart C)

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510(k) Summary

| 510(k) Owner: | Intuitive Surgical, Inc.
1266 Kifer Road
Sunnyvale, CA 94086 |
|------------------------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| Contact: | Mike Yramategui
Fellow Regulatory Engineer
Phone Number: 408-523-2145
Fax Number: 408-523-8907
Email: Mike.Yramategui@intusurg.com |
| Date Summary Prepared: | March 12, 2019 |
| Trade Name: | da Vinci SP® Surgical System, Model SP1098,
EndoWrist SP® Instruments, and Accessories |
| Common Name: | Endoscopic instrument control system, endoscopic
instruments and accessories |
| Classification: | Class II
21 CFR 876.1500, Endoscope and Accessories |
| Product Codes: | NAY (System, Surgical, Computer Controlled Instrument) |
| Classification Advisory Committee: | |
| Committee: | General and Plastic Surgery |
| Predicate Device: | da Vinci SP Surgical System, Model SP1098,
EndoWrist SP Instruments, and Accessories (K173906)
Intuitive Surgical® da Vinci Si® Surgical System,
Model IS3000 (K090993) |

Device Description

The da Vinci SP Surgical System, Model SP1098 is a software-controlled, electromechanical system designed for surgeons to perform single port minimally invasive surgery. The Model SP1098 Surgical System consists of a Surgeon Console, a Patient Cart, and a Vision Cart, and is used with a Camera Instrument, EndoWrist SP Instruments, and Accessories.

5

Image /page/5/Picture/2 description: The image shows three pieces of medical equipment against a white background. The first piece of equipment is a surgical console with a viewing screen and controls. The second piece of equipment is a robotic surgical arm. The third piece of equipment is a cart with a monitor and other electronic equipment.

Surgeon Console, Model SS1098

Patient Cart, Model PS1098

Vision Cart, Model VS1098

The surgeon seated at the Surgeon Console controls all movement of the EndoWrist SP Instruments and Camera Instrument by using two Master Controls and a set of foot pedals. The surgeon views the three-dimensional endoscopic image on a High Resolution Stereo Viewer (3D Viewer), which provides him/her a view of patient anatomy and surgical instrumentation, along with icons and other user interface features.

The Vision Cart includes the supporting electronic and video processing equipment for the system.

The Patient Cart is positioned at the operating room table and has four instrument drives on a single arm that is positioned over the target patient anatomy. A Camera Instrument attaches onto one instrument drive and provides the surgeon a high resolution, threedimensional view of the patient anatomy. A suite of EndoWrist SP Instruments can be attached to and detached from the other three instrument drives, enabling the surgeon to perform various surgical tasks. The Camera Instrument and up to three surgical instruments can be used simultaneously, entering the patient through a single port. Accessories including a cannula, an obturator, a seal, an entry guide, disposable tips for selected instruments, instrument sheaths, and a drape are needed to perform procedures with the system.

The EndoWrist SP Instruments come in various configurations such as graspers, scissors, and needle drivers. The EndoWrist SP instruments have a unique articulating design at the distal tip that mimics the human wrist, shoulder, and elbow to enable triangulation and X-Y-Z movement of the instrument in the body. Each instrument is used to perform specific surgical tasks such as grasping, suturing, tissue manipulation, and electrocautery. The EndoWrist SP Instruments can be used only with the SP1098 Surgical System. The instruments are reusable. They are programmed with a maximum number of surgical procedures based upon life testing.

6

The EndoWrist SP Camera Instrument is a reusable endoscope that provides a stereo image of the surgical site. Like the instruments, the distal end includes multiple joints that provide the flexibility needed for use with a single-port system.

The following EndoWrist SP Instruments and accessories are listed for use with the da Vinci SP Surgical System, Model SP1098:

EndoWrist SP Instruments:

  • Fenestrated Bipolar Forceps ●
  • Maryland Bipolar Forceps
  • Medium-Large Clip Applier (a.k.a. ML Clip Applier)
  • Monopolar Cautery Instrument ●
  • Monopolar Curved Scissors (a.k.a. MCS)
  • Needle Driver ●
  • Round Tooth Retractor ●
  • Cadiere Forceps ●
  • EndoWrist SP Camera, 0° (a.k.a. Camera Instrument)

Accessories for the SP1098 da Vinci SP Surgical System:

  • SP Cannula, Circular, 25 x 100 mm (a.k.a. Cannula) ●
  • SP Obturator, Circular, 25 x 100 mm (a.k.a. Obturator) ●
  • EntryGuide Kit C.6.6.6, 25 x 100 mm (a.k.a. Entry Guide and Cannula Seal) ●
  • Instrument Sheath ●
  • Camera Sheath ●
  • MCS Tip ●
  • Cautery Hook Tip ●
  • Cautery Spatula Tip ●
  • Bipolar Cautery Cord
  • EnergyShield Monopolar Cautery Cord ●
  • Instrument Arm Drape (a.k.a. Drape)

Intended Use

To assist in the accurate control of endoscopic instruments in minimally invasive surgery.

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Indications for Use

da Vinci SP® Surgical System, Model SP1098

The Intuitive Surgical® Endoscopic Instrument Control System (da Vinci SP® Surgical System, Model SP1098) is intended to assist in the accurate control of Intuitive Surgical EndoWrist SP® Instruments during urologic surgical procedures that are appropriate for a single port approach and transoral otolaryngology surgical procedures in the oropharynx restricted to benign tumors and malignant tumors classified as T1 and T2. The system is indicated for adult use. It is intended for use by trained physicians in an operating room environment in accordance with the representative, specific procedures set forth in the Professional Instructions for Use.

EndoWrist SP® Instruments

Intuitive Surgical® EndoWrist SP® Instruments are controlled by the da Vinci SP® Surgical System, Model SP1098, and include flexible endoscopes, blunt and sharp endoscopic dissectors, scissors, forceps/pick-ups, needle holders, endoscopic retractors, electrocautery and accessories for endoscopic manipulation of tissue, including grasping, cutting, blunt and sharp dissection, approximation, ligation, electrocautery, and suturing through a single port. The system is indicated for urologic surgical procedures that are appropriate for a single port approach and transoral otolaryngology surgical procedures in the oropharynx restricted to benign tumors and malignant tumors classified as T1 and T2. The system is indicated for adult use. It is intended for use by trained physicians in an operating room environment in accordance with the representative, specific procedures set forth in the Professional Instructions for Use.

Comparison of Technological Characteristics with the Predicate Device

The da Vinci SP Surgical System, Model SP1098 and EndoWrist SP Instruments and Accessories are unchanged from the predicate device, as cleared under K173906, in terms of intended use, design, performance, and technological characteristics. The only difference is that the labeling has been changed to include use in transoral otolaryngology procedures. Performance testing was conducted to evaluate the performance of the SP1098 for conducting all surgical tasks and representative procedures covered by the proposed Indications for Use. Additionally, the testing compared the safety and ability of the SP1098 and the da Vinci Si Surgical System, Model IS3000 to facilitate performance of surgical tasks, as well as facilitate completion of each representative surgical procedure, and to demonstrate functional equivalence between the SP1098 and the IS3000 (additional predicate device) for use in transoral otolaryngology procedures as cleared under K090993.

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| Attribute | Subject Device
SP1098 da Vinci SP Surgical System,
Instruments, and Accessories | Primary Predicate Device:
SP1098 (K173906)
Additional Predicate Device:
IS3000 (K090993) |
|--------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| Device types | System Carts:
• Surgeon Console
• Vision Cart, including the
EnergyShield Monitor
• Patient Cart
Instruments:
• Fenestrated Bipolar Forceps
• Maryland Bipolar Forceps
• Medium-Large Clip Applier
• Monopolar Cautery Instrument
• Monopolar Curved Scissors
• Needle Driver
• Round Tooth Retractor
• Cadiere Forceps
Endoscope:
• Camera Instrument
Accessories:
• Cannula
• Entry Guide
• Cannula Seal
• Obturator
• Instrument Sheath
• Camera Sheath
• Energy Shield Monopolar Cautery
Cord
• Drape
• MCS Tip | Primary Predicate Device: SAME
Additional Predicate Device:
SAME types of system carts as subject
device.
SIMILAR robotic arms, instruments and
accessories.
The primary difference is that the IS3000
da Vinci Si Surgical System utilizes four
robotic arms and four ports to
accommodate three surgical instruments
and a camera. In contrast, the subject
device (SP1098 da Vinci SP Surgical
System) uses a single robotic arm to
deliver three surgical instruments and a
camera through a single port. |
| Common Name | Endoscopic instrument control system,
endoscopic instruments and accessories | SAME as subject device |

Table 1: Comparison of Subject and Predicate Devices
----------------------------------------------------------

9

| Attribute | Subject Device
SP1098 da Vinci SP Surgical System,
Instruments, and Accessories | Primary Predicate Device:
SP1098 (K173906)
Additional Predicate Device:
IS3000 (K090993) |
|-----------------------------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|---------------------------------------------------------------------------------------------------|
| Regulation
Number & Name | 21 CFR 876.1500
Endoscope and Accessories | SAME as subject device |
| Classification
Advisory
Committee | General and Plastic Surgery | SAME as subject device |
| Product Code(s) | NAY (System, Surgical, Computer
Controlled Instrument) | SAME as subject device |
| Classification | Class II | SAME as subject device |
| Intended Use | To assist in the accurate control of
endoscopic instruments in minimally
invasive surgery. | SAME as subject device |
| Principles of
Operation | Facilitates accurate movement of surgical
instruments and an endoscope through a
single surgical port by using a
master/slave servomechanism that
incorporates servo drive and system-level
motor control. | SAME as subject device |
| Prescription Use | Physician use only | SAME as subject device |
| Where Used | Hospital | SAME as subject device |

Table 1 (continued): Comparison of Subject and Predicate Devices

10

Performance Data

Performance test data included bench, animal and cadaver testing, and a confirmatory clinical study to demonstrate that the subject device is substantially equivalent to the legally marketed predicate device.

Bench Performance Testing

The addition of transoral otolaryngology surgical procedures to the SP1098 indications does not change any of the safety or performance requirements that were previously verified and/or validated for the SP1098 (K173906) regarding cleaning, sterilization, packaging, shelf life, biocompatibility, software, electrosurgical performance, electromagnetic compatibility, electrical safety, mechanical and electrical performance, reliability, or human factors. However, cleaning validation with a soil representative of TORS was performed (see table below) because it had not yet been completed for all the instruments and accessories at the time of the SP1098 clearance (K173906).

ItemTesting
Camera InstrumentCleaning Validation
Surgical InstrumentsCleaning Validation
AccessoriesCleaning Validation

Table 2: Summary of Bench Performance Testing

FDA guidance documents used in bench performance testing: Reprocessing Medical Devices in Health Care Settings: Validation Methods and Labeling. Guidance for Industry and Food and Drug Administration Staff, issued March 17, 2015.

Cadaver and Animal Performance Testing

Comparative animal and cadaver testing was conducted to demonstrate the equivalence of the SP1098 System to the IS3000 System for performing transoral otolaryngology surgical (TORS) procedures. Cadavers were used to demonstrate device performance for anatomical access and reach. Live animals were used to assess safety and performance in cases where a live tissue model was appropriate. These models replicate factors experienced during normal clinical use, including working with perfused organs, normal tissue manipulation, and ensuring that appropriate hemostasis is achieved and maintained.

Three (3) independent practicing surgeons participated in a pre-clinical study using the SP1098 system to perform a set of transoral otolaryngology surgical procedures using both the SP1098 and the IS3000. Each surgeon performed four (4) procedures in

11

cadavers and two (2) procedures in a live porcine model with each system, for a total of eighteen (18) procedures performed with each system. Surgical success criteria for each procedure are listed below. In addition, surgeons completed questionnaires that evaluated their ability to perform surgical tasks with the two systems.

ProcedureSubjectSurgical Success Criteria
Tongue base
resectionCadaver• Resection volume is surgically acceptable
• Resection boundaries achieved
• Critical anatomy identified (e.g., lingual artery, lingual nerve,
hypoglossal nerve)
• No trauma to epiglottis
Lateral
oropharyngectomy
(aka, radical
tonsillectomy)Cadaver• Resection volume is surgically acceptable
• Resection boundaries achieved
• Critical anatomy identified (e.g., medial pterygoid muscle,
glossopharyngeal nerve)
Tongue base
resectionPorcine• Resection volume is surgically acceptable
• Resection boundaries achieved
• Critical anatomy identified (e.g., lingual artery, lingual nerve,
hypoglossal nerve)
• No trauma to epiglottis
• Hemostasis maintained
Lateral
oropharyngectomy
(aka, radical
tonsillectomy)Porcine• Resection volume is surgically acceptable
• Resection boundaries achieved
• Critical anatomy identified (e.g., medial pterygoid muscle,
glossopharyngeal nerve)
• Hemostasis maintained
Table 3: Surgical Success Criteria in Animal and Cadaver Testing
--------------------------------------------------------------------

Clinical Study

A prospective, multicenter, single-arm clinical study (NCT03049280) was conducted under an investigational device exemption (IDE #G160251) to confirm the safety and performance of the SP1098 da Vinci SP Surgical System, Instruments and Accessories in transoral robotic surgery (TORS) for malignant oropharyngeal tumors classified as T1 and T2. A total of 33 subjects were enrolled at three institutions in the United States.

Sixty four percent (64%) of subjects had one or more comorbid conditions which included hypertension, diabetes, chronic obstructive pulmonary disease (COPD). connective tissue, liver, renal or peptic ulcer disease. Thirty one (31) (93.9%) subjects underwent neck dissection, and they were either staged prior to TORS [sixteen (16)

12

(48.5%) subjects] or performed concomitantly with TORS [fifteen (15) (45.4%) subjects].

Safety was determined by incidence rate of device-related serious adverse events. Performance was determined by conversion rate from da Vinci SP to an open approach required to complete the indicated procedure. Results show that the device-related serious adverse event rate was 0%, and the conversion rate was 0%. Additional clinical study parameters were collected to demonstrate substantial equivalence to the predicate. Tables 4 and 5 below summarize the study data.

Clinical Study ParametersStudy Data
Number of Patients, n33
Operative time (min), mean ± SD49.6 ± 33.1
Estimated blood loss (mL), mean ± SD12.2 ± 18.7
Transfusion rate, %0
Conversion to open rate, %0
Device-related complication rate, %0
Intraoperative complications, n0
Length of hospital stay (days), mean ± SD4.2 ± 1.9
Rates of positive surgical margins, n (%)1 (3.0)
Readmission rate, n (%)3 (9.1)
Reoperation rate, n (%)2 (6.1)
Mortality rate, %0
Postoperative complications rates (non-device related), n (%)8 (24.2)

Table 4: TORS Clinical Study Summary (da Vinci SP)

Table 5: Postoperative Complications (8 study subjects)

TypeNumber
Non-serious CTCAE I-II
• Difficulty swallowing with increased secretions1
• Fall1
• Neck seroma1
• Nasal regurgitation1
• Difficulty opening mouth or trismus1
Serious CTCAE III – IV
• Hypoxemia leading to sequelae of altered mental status and hospital acquired pneumonia1
• Hospital-acquired pneumonia1
• Hemorrhage1
• Clostridium difficile enterocolitis1
• Left middle cerebral artery stroke leading to sequela of hemorrhage post TPA-administration1

13

No intraoperative complications were observed and the safety endpoint was met. The bench, animal, cadaver and confirmatory clinical study demonstrate that SP1098 da Vinci SP Surgical System is as safe and effective as the predicate device.

Specific parameters of the clinical study were also compared to recently published clinical data between 2013 and 2018 on the da Vinci Si Surgical System for transoral otolaryngology surgery (TORS). In order to obtain the latest real world data on the predicate device, a systematic literature search of peer-reviewed publications was conducted using specific search criteria and filters.

Data from thirteen (13) publications reporting on transoral robotic surgery for cancer in the oropharynx with da Vinci Si Surgical System met these criteria and were included in the comparison. A detailed summary of this comparison of the da Vinci SP Surgical System data to the published clinical literature data on the da Vinci Si Surgical System is provided in Table 6 below for nine (9) parameters. Each parameter from the literature is shown based on its sample size, weighted average, weighted standard deviation and 95% confidence interval. The weighting has been performed according to the sample size of the study cohort using the weighted version of proc univariate within SAS version 9.4 for the calculations. The abstracted data is summarized in Table 7 at the end of this 510(k) Summary, and a bibliography of the literature is provided in Table 8.

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Sources of Data
Clinical ParameterG160251/K182371da Vinci Si -
Literature1-13
Sample SizeN=33N=9315
Operative Time (min), mean ± SD
95% CI49.6 ± 33.1
[0, 114.5]N=115 4,7,8
148.5 (± 71.0)
[9.3, 287.7]
Estimated Blood Loss (mL), mean ± SD
95% CI12.2 ± 18.7
[0, 48.9]N=20 8
100 a
[31.4, 168.6]
Transfusion rate, (%)
95% CI0%
[0, 10.4]*N=1806 3,10
2.1% (±5.1)
[0, 12.1]
Length of Hospital Stay (days), mean ± SD
95% CI4.2 ±1.9
[0.5, 7.9]N=2798 2-4,7,8,10
4.6 (±1.3) b
[2.1, 7.2]
Conversion Rate from TORS (%)
95% CI0%
[0, 10.4]*N=896 2
2.1%
[1.3, 3.2]**
Mortality Rate (perioperative) (%)
95% CI0%
[ 0, 10.4]*N=5307 1,3,7,9-11,13
0.52% (±0.62)
[0, 1.7]
Readmission Rate (%)
95% CI9.1%
[3.1, 23.6]*N=5265 2,4,5,6,10,13
8.8% (±3.1)
[2.7, 14.9]
Reoperation Rate (%)
95% CI6.1%
[1.7, 19.7]*N=1417 5,10,12
3.9% (±1.6)
[0.8, 7.0]
Postoperative Complications (%)
95% CI24.2%
[12.8, 41.0]*N=520 4,5,7
55.7% (±18.6) c
[19.2, 92.2]

Table 6: da Vinci SP versus da Vinci Si Literature Comparison

*Wilson (Score) 95% confidence interval, **Agresti Coull 95% confidence interval

Weighted averages, weighted standard deviations and 95% confidence intervals are provided for 7 of the 9 parameters from the literature; estimated blood loss and conversion rate are as reported in one publication.

Studies by Clayburgh D et al. (ref #4), and Chung TK et al. (ref #3), include multiple independent robotic cohorts used in the weighted average calculations for either discrete or continuous parameters.

4Median estimated blood loss is used in place of mean, and standard deviation was estimated using the range/4 reported by More et al.

bMedian length of hospital stay is used in place of mean, standard deviation was estimated using the range/4 for both cohorts reported in Clayburgh D. et al. In the paper by Parhar HS. et al. (ref #10) mean length of hospital stay for 2 cohorts (readmissions and non- readmissions) is used in the overall calculation. Richmon J. et al. (ref#11) only reports a difference in length of hospital stay between robotic and non-robotic cohorts and is therefore not used in the overall calculation.

6Weighted mean postoperative complication rate includes the paper by Lee SY. et al. (ref #7) which reports only TORS related complications.

15

Comparison of results from the da Vinci SP Surgical System to the published literature on the da Vinci Si Surgical System demonstrate that the point estimate of all 9 parameters from the da Vinci SP study fall within or below the 95% confidence intervals calculated from the published clinical literature on da Vinci Si.

  • Operative time
  • Transfusion rate
  • . Length of hospital stay
  • Readmission rate
  • Estimated blood loss ●
  • Conversion rate from TORS to open ●
  • Mortality rate
  • Reoperation rate
  • . Post-operative complications rate

This comparison was used to demonstrate that the da Vinci SP Surgical System is as safe and effective as the predicate device and does not raise different questions of safety and effectiveness.

Conclusion

Based on the intended use, indications for use, technological characteristics and performance data, the Intuitive Surgical da Vinci SP Surgical System, Model SP1098, EndoWrist SP Instruments, and Accessories, is substantially equivalent (SE) to the predicate devices. This SE determination is based on performance testing that included: bench, cadaver, and animal testing with simulated and representative transoral otolaryngology surgical procedures, and a confirmatory clinical study. The bench performance testing verified that the instruments and accessories could be cleaned when exposed to soiling expected in transoral otolaryngology surgical procedures. The cadaver performance testing validated the users' ability to use the system to accurately control the endoscopic instruments, to reach the necessary target anatomy, and to perform surgical tasks. The simulated and representative transoral otolaryngology surgical procedures in live animals validated that the system can be used to successfully complete the representative transoral otolaryngology surgical procedures encompassed by the indications for use statement. The confirmatory clinical study showed that the results experienced in the cadaver and animal study reflect the results experienced in a human clinical setting, and that there are no different questions of safety or effectiveness compared to the predicate device. A complete list of postoperative complications experienced in the clinical study is provided in Table 5, and Table 6 provides a comparison of clinical parameters from the study on da Vinci SP (subject device) and published clinical literature on da Vinci Si (predicate device), and supports substantial equivalence for performing transoral otolaryngology surgical procedures.

16

| Author | Cohort | Study
Size | Operation
Time (min) | Blood
Transfusion
(%) | EBL (mL) | Length of Stay (days) | Conversions | Postop
Complication Rate
(30-days) (%) | Mortality Rate
(in-hospital or
30 days)
(%) | Readmission
Rate (30-days)
(%) | Reoperation
Rate (30-days)
(%) |
|------------------------|-----------------------------------------------------------------------------|---------------|-------------------------|-----------------------------|--------------|----------------------------------------------|-----------------|----------------------------------------------|------------------------------------------------------|--------------------------------------|--------------------------------------|
| 1. Baliga S (2018) | Robotic | 2680 | NR | NR | NR | NR | NR | NR | 0.4% | NR | NR |
| 2. Chen MM (2014) | Robotic | 877 | NR | NR | NR | 4.7 (SE 0.2) | 19/896 (2.1%) | NR | NR | 4.40% | NR |
| 3. Chung TK (2015) | Robotic partial
pharyngectomy -
mild/moderate | 523 | NR | 0% | NR | 3.7 ± 2.2 | NR | NR | 0% | NR | NR |
| | Robotic partial
pharyngectomy -
major/extreme | 118 | | 21.20% | NR | 7.6 ± 7.0 | | | 4.20% | | |
| | Robotic partial
glossectomy for
BOT Ca
(mild/moderate) | 147 | | 0% | NR | 3.54 ± 2.61 | | | 0% | | |
| | Robotic partial
glossectomy for
anterior tongue ca
(mild/moderate) | 68 | | 0% | NR | 4.8 ± 3.1 | | | 0% | | |
| 4. Clayburgh D (2017) | Robotic placebo | 33 | 202 ± 51 | NR | NR | median 5 (range 2-11) | NR | 7/33 (21.2%) | NR | 0 | NR |
| | Robotic steroid | 35 | 211 ± 61 | NR | NR | median 4 (range 2-6) | | 10/35 (28.6%) | | 2/35 (5.7%) | |
| 5. Frenkel CH (2017) | Robotic | 425 | NR | NR | NR | NR | 273/425 (64.2%) | NR | 56/425 (13.2%) | 26/425 (6.1%) | |
| 6. Goel AN (2018) | Robotic | 2576 | NR | NR | NR | NR | NR | NR | 236/2576 (9.2%) | NR | |
| 7. Lee SY (2013) | Robotic | 27 | 48.3 ± 7.5 | NR | NR | 14.6 ± 4 | NR | TORS related
comps: 0% | 0% | NR | NR |
| 8. More YI (2013) | Robotic | 20 | 86 ± 36 | NR | 100 (60-200) | 2 (1-4) | NR | NR | NR | NR | NR |
| 9. Motz K (2017) | Robotic | 304 | NR | NR | NR | NR | NR | NR | 1.00% | NR | NR |
| 10. Parhar HS (2018) | Robotic | 955 | NR | 13/950
(1.4%) | NR | Readmit: 5.7 ± 6.8
not readmit: 4.3 ± 4.1 | NR | NR | 5/955 (0.5%) | 117/950 (12.3%) | 27/950 (2.8%) |
| 11. Richmon J (2014) | Robotic | 116 | NR | NR | NR | -1.5 | NR | NR | 0% | NR | NR |
| 12. Smith RV (2015) | Robotic | 42 | NR | NR | NR | NR | NR | NR | NR | NR | 3/42 (7.1%) |
| 13. Zevallos JP (2016) | Robotic | 369 | NR | NR | NR | NR | NR | NR | 4/369 (1.1%) | 14/369 (3.8%) | NR |

NR: Not reported

17

#Publication
1Baliga S, Kabarriti R, Jiang J, et al. Utilization of Transoral Robotic Surgery (TORS) in patients
with Oropharyngeal Squamous Cell Carcinoma and its impact on survival and use of
chemotherapy. Oral Oncology. 2018;86:75-80.
2Chen MM, Roman SA, Kraus DH, Sosa JA, Judson BL. Transoral Robotic Surgery: A
Population-Level Analysis. Otolaryngology--head and neck surgery : official journal of
American Academy of Otolaryngology-Head and Neck Surgery. 2014.
3Chung TK, Rosenthal EL, Magnuson JS, Carroll WR. Transoral robotic surgery for
oropharyngeal and tongue cancer in the United States. The Laryngoscope. 2014.
4Clayburgh D, Stott W, Bolognone R, et al. A randomized controlled trial of corticosteroids for
pain after transoral robotic surgery. The Laryngoscope. 2017.
5Frenkel CH, Yang J, Zhang M, Altieri MS, Telem DA, Samara GJ. Compared Outcomes of
Concurrent versus Staged Transoral Robotic Surgery with Neck Dissection. Otolaryngology--
head and neck surgery : official journal of American Academy of Otolaryngology-Head and
Neck Surgery. 2017:194599817706499.
6Goel AN, Badran KW, Mendelsohn AH, et al. Readmission after surgery for oropharyngeal
cancer: An analysis of rates, causes, and risk factors. The Laryngoscope. 2018.
7Lee SY, Park YM, Byeon HK, Choi EC, Kim SH. Comparison of oncologic and functional
outcomes after transoral robotic lateral oropharyngectomy versus conventional surgery for T1 to
T3 tonsillar cancer. Head & neck. 2013;36(8):1138-1145.
8More YI, Tsue TT, Girod DA, et al. Functional swallowing outcomes following transoral robotic
surgery vs primary chemoradiotherapy in patients with advanced-stage oropharynx and
supraglottis cancers: Comment. Dysphagia. 2013;28(4):593-594.
9Motz K, Chang HY, Quon H, Richmon J, Eisele DW, Gourin CG. Association of Transoral
Robotic Surgery With Short-term and Long-term Outcomes and Costs of Care in Oropharyngeal
Cancer Surgery. JAMA otolaryngology-- head & neck surgery. 2017.
Motz K, Chang H-Y, Quon H, Richmon J, Eisele DW, Gourin CG. Association of transoral
robotic surgery with short-term and long-term outcomes and costs of care in oropharyngeal
cancer surgery. Supplementary Online Content. JAMA Otolaryngol Head Neck Surg. Published
online March 30, 2017.
10Parhar HS, Gausden E, Patel J, et al. Analysis of readmissions after transoral robotic surgery for
oropharyngeal squamous cell carcinoma. Head Neck. 2018.
11Richmon J, Quon H, Gourin CG. The effect of transoral robotic surgery on short-term outcomes
and cost of care after oropharyngeal cancer surgery. The Laryngoscope. 2013.
12Smith RV, Schiff BA, Garg M, Haigentz M. The impact of transoral robotic surgery on the
overall treatment of oropharyngeal cancer patients. The Laryngoscope. 2015;125 Suppl 10:S1-
s15.
13Zevallos JP, Mitra N, Swisher-McClure S. Patterns of care and perioperative outcomes in
transoral endoscopic surgery for oropharyngeal squamous cell carcinoma. Head Neck. 2014.