To facilitate the placement of pedicle screws using the power technique (corded and cordless). the use of the Stryker Spine Power Adaptor is intended for exclusive use with the Stryker Instruments Hudson Modified Trinkle Reamer and the Stryker Instruments CD3 Cordless Driver 3 and the Stryker Instruments RemB Universal Driver. When the power adaptors are attached. the CD3 Cordless Driver 3 and RemB Univer provide power (corded and cordless) to rotate screwdrivers for the insertion of pedicle screws.

Pedicle screws from select Stryker Spine implant systems may be implanted in the skeletally mature non-cervical spine using powered (corded and cordless) instrumentation. The systems included are the family of Xia Spinal Systems (Xia Stainless Steel, Xia II. Xia Anterior, and Xia Precision), Xia 3 Spinal System, Xia 4.5 Spinal System, Radius Spinal System and Mantis Spinal Systems.

The Xia Spinal System is intended for anterior/anteriolateral and posterior, non-cervical pedicle and non-pedicle fixation in skeletally mature patients as an adjunct to fusion for the following indications: degenerative disc disease (DDD) (defined as back pain of discogenic origin with degeneration of the disc confirmed by history and radiographic studies); spondylolisthesis; trauma: (i.e. fracture or dislocation); spinal stenosis; curvature (i.e. scoliosis, and/or lordosis); tumor; pseudoarthrosis; and failed previous fusion.

The XIA 4.5. Xia 3. Radius Spinal Systems are intended for use in the non-cervical spine. When used as an anterior/anteriolateral and posterior, non-cervical pedicle and non-pedicle fixation system, the Xia 3, XIA 4.5, Xia 3, and Radius Spinal Systems are intended to provide additional support during fusion using autograft or allograft in skeletally mature patients in the treatment of the following acute and chronic instabilities or deformities: degenerative disc disease (DDD) (defined as back pain of discogenic origin with degeneration of the disc confirmed by history and radiographic studies); spondylolisthesis; trauma (i.e. fracture or dislocation); spinal stenosis; curvatures (i.e. scoliosis, and/or lordosis); tumor; pseudoarthrosis; and failed previous fusion.

The MANTIS® Spinal System and MANTIS® Redux Spinal System is intended for percutaneous, posterior, non-cervical pedicle and non-pedicle fixation of the spine to provide immobilization and stabilization of spinal segments in skeletally mature patients as an adjunct to fusion for the following indications: degenerative disc disease (defined as back pain of discogenic origin with degeneration of the disc confirmed by history and radiographic studies); spondylolisthesis; trauma (i.e. fracture or dislocation); spinal stenosis; curvatures (i.e. scoliosis, kyphosis, and/or lordosis); tumor; Pseudoarthrosis; and failed previous fusion.

Device Description

The line extension, which is the subject of this 510(k), consists of the addition of a power adaptor instrument accessory. The power adaptor is intended to facilitate the insertion of pedicle screws using the CD3 Cordless Driver 3 powered instrument. The STRYKER Spine Power Adaptor instrument, currently used with the RemB Universal Driver (corded), Power Adaptor (K111478) has the same design and function, differ only with respect to the power source used to operate (4 volt battery vs. Controller interface). Verification activities for fatigue insertion, interface and functional compatibility and comparison testing for profile and weight using the RemB Universal Driver, Power Adaptor (K111478) were found to be equivalent, all test reports are found in Section 18.3. This 510(k) supports a labeling update to include the option for pedicle screw insertion using cordless powered instrumentation (in addition to the existing manual and corded power insertion technique). To facilitate the insertion of pedicle screws using the power technique, the use of the Stryker Spine Power Adaptor is intended for exclusive use with the Stryker Instruments Hudson Modified Trinkle Reamer and the CD3 Cordless Driver 3, identical to the RemB Univer (corded) Power Adaptor (K111478). The adaptors serve as a mechanical interface between the power driver and screwdriver instrument. When the adaptors are attached, the CD3 Cordless Driver 3 provides appropriate power to rotate screw drivers for the insertion of pedicle screws. No changes have been made to the indications for use of the associated thoracolumbar spinal implant systems: Xia Spinal System (Xia Stainless Steel, Xia II. Xia Anterior, and Xia Precision), Xia 3 Spinal System, Xia 4.5 Spinal System, Radius Spinal System and Mantis Spinal System. The indications for use of each spinal system remain consistent with their most recent 510(k) clearance.

AI/ML Overview

The provided text describes a 510(k) premarket notification for a power adaptor instrument accessory. This device is an accessory to a spinal fixation system, intended to facilitate the insertion of pedicle screws using powered techniques (corded and cordless). The submission focuses on demonstrating substantial equivalence to a predicate device (RemB Universal Driver, Power Adaptor, K111478).

Here's an analysis of the acceptance criteria and study information, based solely on the provided text. It's important to note that this document is a summary and details of the actual test reports (TRP000002163 and DSGN-fm-5303) are not fully provided, only referenced.

1. Table of Acceptance Criteria and Reported Device Performance:

The document describes verification activities rather than explicit quantified acceptance criteria in the typical sense of a diagnostic device's sensitivity, specificity, or similar metrics. The primary acceptance criterion appears to be demonstrating equivalence and adequate performance compared to the predicate device and existing manual techniques through various bench tests.

Acceptance Criteria (Implied/Inferred)	Reported Device Performance
Fatigue Insertion (Simulated 3-year usage)	"Test results demonstrated that the subject device can withstand screw loading and screw insertion during normal use without loss of function." (Referencing TRP000002163 and DSGN-fm-5303 reports)
Interface and Functional Compatibility (with existing screwdrivers)	"Additionally, bench testing results confirmed that the CD3 Cordless Driver 3Power Adaptor device is compatible with existing screwdriver instruments."
Usability and Ergonomics (Surgeon Interface)	"No significant differences were observed concerning the surgeon interface for usability and ergonomics between the two hand pieces [new device vs. predicate]."
Safety Evaluation (Screw Placement Quality/Accuracy)	"safety evaluation testing of the CD3 Cordless Driver 3 Power Adaptor pedicle screw insertion technique under simulated use conditions presented no quality/accuracy issues for screw placement."
Profile and Weight (Comparison to Predicate)	"Additionally, the weight differences were considered modest and both size and shape were of similar design."
Equivalence in Design and Performance to Predicate	"The Stryker Spine CD3 Cordless Driver 3 Power Adaptor and RemB Universal Driver Power Adaptor (K1114780) are identical in design and performance and differ only with respect to the power source used for operation." (This is a conclusion from the testing and comparison; the performance aspect is supported by the other tests mentioned).
Maintain existing Indications for Use	The submission asserts: "No changes have been made to the indications for use of the associated thoracolumbar spinal implant systems... The indications for use of each spinal system remain consistent with their most recent 510(k) clearance." This means the new accessory does not broaden or alter the clinical applications or patient populations for the spinal systems it's used with, and the testing supports that the device doesn't negatively impact the ability to meet these existing indications.

2. Sample Size Used for the Test Set and Data Provenance:

Sample Size: The document does not specify a numerical "sample size" in terms of patient data or clinical cases. The testing described is bench testing using simulated conditions and materials. For "fatigue insertion over a simulated three year usage period," this implies a duration of testing rather than a discrete number of samples in the typical sense. It refers to "screw loading and screw insertion" events as part of the fatigue test, but no specific count is given.
Data Provenance: The data provenance is from bench testing conducted by the manufacturer (Stryker Spine). It is not patient data, so concepts like "country of origin of the data" (for patients) or "retrospective/prospective" (for clinical studies) do not directly apply here. The testing is laboratory-based verification.

3. Number of Experts Used to Establish the Ground Truth for the Test Set and Qualifications of Those Experts:

Experts: The document mentions "safety evaluation testing... under simulated use conditions presented no quality/accuracy issues for screw placement." It also states "No significant differences were observed concerning the surgeon interface for usability and ergonomics between the two hand pieces." While these evaluations likely involved ergonomic assessment by individuals with surgical or engineering expertise, the document does not specify the number or qualifications of any "experts" used to establish a ground truth. The evaluations appear to be internal engineering and usability assessments rather than formal expert consensus panels.

4. Adjudication Method for the Test Set:

Adjudication Method: Not applicable. This is not a study requiring adjudication of expert opinions or interpretations, as it is bench testing and engineering verification.

5. If a Multi-Reader Multi-Case (MRMC) Comparative Effectiveness Study Was Done, If So, What Was the Effect Size of How Much Human Readers Improve with AI vs Without AI Assistance:

MRMC Study: No. This is not a diagnostic device based on interpretation by human readers (e.g., AI in radiology). It is a surgical instrument accessory. Therefore, an MRMC comparative effectiveness study involving human "readers" or "AI assistance" is not relevant and was not performed.

6. If a Standalone (i.e., algorithm only without human-in-the-loop performance) Was Done:

Standalone Performance: Not applicable. This device is a mechanical instrument accessory, not a software algorithm that performs diagnostic or analytical tasks. It is inherently used "human-in-the-loop" as a surgical tool.

7. The Type of Ground Truth Used:

Ground Truth: The "ground truth" for this device's performance is established by engineering specifications, material properties, and functional performance benchmarks as demonstrated through bench testing. For example, "withstanding screw loading and screw insertion without loss of function" is verified against a predefined functional standard. "Compatibility with existing screwdriver instruments" is verified through direct operational testing. The "ground truth" is adherence to design and performance requirements.

8. The Sample Size for the Training Set:

Training Set Sample Size: Not applicable. This device is not an AI/ML algorithm that requires a "training set." The development and verification rely on engineering design, materials science, and physical testing, not data training.

9. How the Ground Truth for the Training Set Was Established:

Ground Truth for Training Set: Not applicable, as there is no training set for this type of device.

Summary

{0}------------------------------------------------

510(K) SUMMARY

1.1 Applicant

Stryker Spine 2 Pearl Court. Allendale, NJ 07401 Phone: (201)-760-8206 Fax: (201)-760-8406 E-mail:tiffani.rogers(@stryker.com

Contact Information:

Paula E. Bulger Regulatory Affairs Consultant Stryker Spine Two Pearl Court Allendale, NJ 07401 Phone: (201)-760-3476 Fax: E-mail:paula.bulger@stryker.com

Device Trade Name: 1.2

Power Adaptor Instrument Accessory

1.3 Device Common Name:

Spinal Fixation Appliances, Instrument Accessory

1.4 Establishment Registration Number

3004024955

1.5 Manufacturer Address

Stryker Spine Zone Industrielle Demarticot Cestas, France 33610 Phone: + 33 577 97 08 40

{1}------------------------------------------------

1.5.1 Manufacturer Establishment Number: 9617544

1.6 Device Classification:

Stryker Spine Power Adaptor Instrument Accessory Device (new) is a Class III device and is classified by FDA under Pedicle Screw Spinal System, 21 CFR §888.3070 (b) (1) & (b) (2). The FDA Product Codes are NKB, MNH, MNI.

1.7 Device Description/Modification:

{2}------------------------------------------------

Indications for Use 1.8

Intended Use:

Pedicle screws from select Stryker Spine implant systems may be implanted in the skeletally mature non-cervical spine using powered (corded and cordless) instrumentation. The systems included are the family of Xia Spinal Systems (Xia Stainless Steel, Xia II, Xia Anterior, and Xia Precision), Xia 3 Spinal System, Xia 4.5 Spinal System, Radius Spinal System and Mantis Spinal Systems.

Indications for Use:

{3}------------------------------------------------

Predicate Devices 1.9

. Stryker Spine RemB Universal Driver, Power Adaptor, K111478
Stryker Spine XIA Spinal Systems, K060361; 트
Stryker Spine XIA 3 Spinal System, K091291; 트
트 Stryker Spine XIA 4.5 Spinal System, K092605;
. Stryker Spine RADIUS Spinal System, K101144;
트 Stryker Spine MANTIS Spinal System, K102235;
. Stryker Instruments CD3 Cordless Driver System, K943323.

Summary of Technological Characteristics 1.10

A Risk Assessment was conducted using both the RemB Universal Driver (corded) Power Adaptor (K1114780) and CD3 Cordless Driver 3 Power Adaptor; which identified an appropriate parallel testing plan. Comparison verification and validation testing was based on the Risk Assessment using the RemB Corded Power Adaptor (K1114780) and CD3 Cordless Driver 3 Power Adaptor, verification activities performed and reported for RemB Universal Driver (corded) (K111478) are the identical reports submitted for CD3 Cordless Driver 3 Power Adaptor. Verification activities consisted which consisted of the following: bench testing for fatigue insertion over a simulated three year usage period, interface and functional compatibility of the Power Adaptor against the existing screwdrivers currently used for placement of pedicle screws, and comparison testing for profile and weight. Test results demonstrated that the subject device can withstand screw loading and screw insertion during normal use without loss of function. Additional, bench testing results confirmed that the CD3 Cordless Driver 3Power Adaptor device is compatible with existing screwdriver instruments. No significant differences were observed concerning the surgeon interface for usability and ergonomics between the two hand pieces, and safety evaluation testing of the CD3 Cordless Driver 3 Power Adaptor pedicle screw insertion technique under simulated use conditions presented no quality/accuracy issues for screw placement. Additionally, the weight differences were considered modest and both size and shape were of similar design. Verification testing (including test methods, materials and results) are described in TRP000002163 report title "Power Screw Insertion Power Adaptor

{4}------------------------------------------------

Fatigue Verification." and DSGN-fm-5303 report title "Verification Power Screw Insertion Fatigue Verification Technician Summary." These reports are provided in Section 18.3.

The Stryker Spine CD3 Cordless Driver 3 Power Adaptor and RemB Universal Driver Power Adaptor (K1114780) are identical in design and performance and differ only with respect to the power source used for operation.

{5}------------------------------------------------

DEPARTMENT OF HEALTH & HUMAN SERVICES

Public Health Service

Food and Drug Administration 10903 New Hampshire Avenue Document Control Room -W066-G609 Silver Spring, MD 20993-0002

Stryker Spine % Ms. Paula Bulger Regulatory Affairs Consultant 2 Pearl Street Allendale, New Jersey 07401

MAR - 8 2012

Re: K120434

Trade/Device Name: Power Adaptor Instrument Accessory Regulation Number: 21 CFR 888.3070 Regulation Name: Pedicle screw spinal system (accessory instrument) Regulatory Class: Class III Product Code: NKB, MNI, MNH Dated: February 9, 2012 Received: February 13, 2012

Dear Ms. Bulger:

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. 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.

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 (reporting of medical device-related adverse events) (21 CFR 803); good manufacturing practice requirements as set forth in the quality systems (QS) regulation (21 CFR Part 820); and if applicable, the electronic product radiation control provisions (Sections 531-542 of the Act); 21 CFR 1000-1050.

{6}------------------------------------------------

Page 2 - Ms. Paula Bulger

If you desire specific advice for your device on our labeling regulation (21 CFR Part 801), please go to http://www.fda.gov/AboutFDA/CentersOffices/CDRH/CDRHOffices/ucm115809.htm for the Center for Devices and Radiological Health's (CDRH's) Office of Compliance. Also, please note the regulation entitled, "Misbranding by reference to premarket notification" (21CFR 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 the CDRH's Office of Surveillance and Biometrics/Division of Postmarket Surveillance.

You may obtain other general information on your responsibilities under the Act from the Division of Small Manufacturers, International and Consumer Assistance at its toll-free number. (800) 638-2041 or (301) 796-7100 or at its Internet address http://www.fda.gov/MedicalDevices/Resourcesfor You/Industry/default.htm.

Sincerely yours,
Mark A. Millerson

Mark N. Melkerson Director Division of Surgical, Orthopedic and Restorative Devices Office of Device Evaluation Center for Devices and Radiological Health

Enclosure

{7}------------------------------------------------

INDICATIONS FOR USE STATEMENT

510(k) Number (if known): K120434

Device Name: Power Adaptor Instrument Accessory

Intended Use:

To facilitate the placement of pedicle screws using the power technique (corded and cordless), the use of the Stryker Spine Power Adaptor is intended for exclusive use with the Stryker Instruments Hudson Modified Trinkle Reamer and the Stryker Instruments CD3 Cordless Driver 3 and the Stryker Instruments RemB Universal Driver. When the power adaptors are attached, the CD3 Cordless Driver 3 and RemB Univer provide power (corded and cordless} to rotate screwdrivers for the insertion of pedicle screws.

Pedicle screws from select Stryker Spine implant systems may be implanted in the skeletally mature non-cervical spine using powered (corded and cordless) instrumentation. The systems included are the family of Xia Spinal Systems (Xia Stainless Steel, Xia II, Xia Anterior, and Xia Precision), Xia 3 Spinal System, Xia 4.5 Spinal System, Radius Spinal System and Mantis Spinal Systems.

Indications for Use:

The Xia Spinal System is intended for anterior/ateral and posterior, non-cervical pedicle and non-pedicle fixation in skeletally mature patients as an adjunct to fusion for the following indications: degenerative disc disease (DDD) (defined as back pain of discogenic origin with degeneration of the disc confirmed by history and radiographic studies); spondylolisthesis; trauma; (i.e. fracture or dislocation); spinal stenosis; curvature (i.e. scoliosis, kyphosis, and/or lordosis); tumor; pseudoarthrosis; and failed previous fusion.

The XIA 4.5, Xia 3, Radius Spinal Systems are intended for use in the non-cervical spine. When used as an anterior/anteriolateral and posterior, non-cervical pedicle and non-pedicle fixation system, the Xia 3, XIA 4.5, Xia 3, and Radius Spinal Systems are intended to provide additional support during fusion using autograft in skeletally mature patients in the treatment of the following acute and chronic instabilities or deformities: degenerative disc disease (DDD) (defined as back pain of discogenic origin with degeneration of the disc confirmed by history and radiographic studies); spondylolisthesis; trauma (i.e. fracture or dislocation); spinal stenosis; curvatures (i.e. scoliosis, kyphosis, and/or lordosis); tumor; pseudoarthrosis; and failed previous fusion.

The MANTIS® Spinal System and MANTIS® Redux Spinal System is intended for percutaneous, posterior, noncervical pedicle and non-pedicle fixation of the spine to provide immobilization of spinal segments in skeletally mature patients as an adjunct to fusion for the following indications: degenerative disc disease (defined as back pain of discogenic origin with degeneration of the disc confirmed by history and radiographic studies); spondylolisthesis; trauma (i.e. fracture or dislocation); spinal stenosis; curvatures (i.e. scoliosis, and/or lordosis); tumor; Pseudoarthrosis; and failed previous fusion.

Prescription

(Part 21 CFR 801 Subpart D)

Use

AND/OR

Over-The-Counter Use (21 CFR 801 Subpart C) .

(PLEASE DO NOT WRITE BELOW THIS LINE-CONTINUE ON ANOTHER PAGE OF NEEDED)

Concurrence of CDRH, Office of Device Evaluation (ODE)

(Division Sign-Off)
Division of Surgical, Orthopedic, and Restorative Devices
510(k) Number	K120434

Regulation Number and Section

§ 888.3070 Thoracolumbosacral pedicle screw system.

(a)
Identification. (1) Rigid pedicle screw systems are comprised of multiple components, made from a variety of materials that allow the surgeon to build an implant system to fit the patient's anatomical and physiological requirements. Such a spinal implant assembly consists of a combination of screws, longitudinal members (e.g., plates, rods including dual diameter rods, plate/rod combinations), transverse or cross connectors, and interconnection mechanisms (e.g., rod-to-rod connectors, offset connectors).(2) Semi-rigid systems are defined as systems that contain one or more of the following features (including but not limited to): Non-uniform longitudinal elements, or features that allow more motion or flexibility compared to rigid systems.
(b)
Classification. (1) Class II (special controls), when intended to provide immobilization and stabilization of spinal segments in skeletally mature patients as an adjunct to fusion in the treatment of the following acute and chronic instabilities or deformities of the thoracic, lumbar, and sacral spine: severe spondylolisthesis (grades 3 and 4) of the L5-S1 vertebra; degenerative spondylolisthesis with objective evidence of neurologic impairment; fracture; dislocation; scoliosis; kyphosis; spinal tumor; and failed previous fusion (pseudarthrosis). These pedicle screw spinal systems must comply with the following special controls:(i) Compliance with material standards;
(ii) Compliance with mechanical testing standards;
(iii) Compliance with biocompatibility standards; and
(iv) Labeling that contains these two statements in addition to other appropriate labeling information:
“Warning: The safety and effectiveness of pedicle screw spinal systems have been established only for spinal conditions with significant mechanical instability or deformity requiring fusion with instrumentation. These conditions are significant mechanical instability or deformity of the thoracic, lumbar, and sacral spine secondary to severe spondylolisthesis (grades 3 and 4) of the L5-S1 vertebra, degenerative spondylolisthesis with objective evidence of neurologic impairment, fracture, dislocation, scoliosis, kyphosis, spinal tumor, and failed previous fusion (pseudarthrosis). The safety and effectiveness of these devices for any other conditions are unknown.”
“Precaution: The implantation of pedicle screw spinal systems should be performed only by experienced spinal surgeons with specific training in the use of this pedicle screw spinal system because this is a technically demanding procedure presenting a risk of serious injury to the patient.”
(2) Class II (special controls), when a rigid pedicle screw system is intended to provide immobilization and stabilization of spinal segments in the thoracic, lumbar, and sacral spine as an adjunct to fusion in the treatment of degenerative disc disease and spondylolisthesis other than either severe spondylolisthesis (grades 3 and 4) at L5-S1 or degenerative spondylolisthesis with objective evidence of neurologic impairment. These pedicle screw systems must comply with the following special controls:
(i) The design characteristics of the device, including engineering schematics, must ensure that the geometry and material composition are consistent with the intended use.
(ii) Non-clinical performance testing must demonstrate the mechanical function and durability of the implant.
(iii) Device components must be demonstrated to be biocompatible.
(iv) Validation testing must demonstrate the cleanliness and sterility of, or the ability to clean and sterilize, the device components and device-specific instruments.
(v) Labeling must include the following:
(A) A clear description of the technological features of the device including identification of device materials and the principles of device operation;
(B) Intended use and indications for use, including levels of fixation;
(C) Identification of magnetic resonance (MR) compatibility status;
(D) Cleaning and sterilization instructions for devices and instruments that are provided non-sterile to the end user; and
(E) Detailed instructions of each surgical step, including device removal.
(3) Class II (special controls), when a semi-rigid system is intended to provide immobilization and stabilization of spinal segments in the thoracic, lumbar, and sacral spine as an adjunct to fusion for any indication. In addition to complying with the special controls in paragraphs (b)(2)(i) through (v) of this section, these pedicle screw systems must comply with the following special controls:
(i) Demonstration that clinical performance characteristics of the device support the intended use of the product, including assessment of fusion compared to a clinically acceptable fusion rate.
(ii) Semi-rigid systems marketed prior to the effective date of this reclassification must submit an amendment to their previously cleared premarket notification (510(k)) demonstrating compliance with the special controls in paragraphs (b)(2)(i) through (v) and paragraph (b)(3)(i) of this section.