(268 days)
No
The 510(k) summary describes a standard mobile fluoroscopy system with image processing capabilities, but there is no mention of AI or ML in the device description, intended use, or performance studies. The image processing mentioned appears to be standard digital image processing for display and storage, not AI/ML-based analysis or interpretation.
No
The device is an imaging system designed to provide fluoroscopic and spot-film images for diagnostic, surgical, and interventional procedures, not to treat or alleviate a medical condition.
Yes
The "Intended Use / Indications for Use" section explicitly states that the device is "designed to provide fluoroscopic and spot-film images of the patient during diagnostic, surgical and interventional procedures." The use of imaging for "diagnostic" purposes confirms its role as a diagnostic device.
No
The device description clearly outlines multiple hardware components including an X-ray generator, tube housing, flat panel detector, X-ray cabinet, cables, and a C-Arm with motorized movement. While it includes image processing, it is not solely software.
Based on the provided information, the Trident Mobile Fluoroscopy System is not an IVD (In Vitro Diagnostic) device.
Here's why:
- IVD devices are used to examine specimens derived from the human body. The description of the Trident Mobile Fluoroscopy System clearly states its purpose is to provide fluoroscopic and spot-film images of the patient during various procedures. It directly interacts with the patient's body using X-rays, not with samples taken from the patient.
- The intended use and device description focus on imaging the internal structures of the patient. This is characteristic of medical imaging devices, not IVD devices.
- There is no mention of analyzing biological samples, reagents, or laboratory procedures. These are key components of IVD testing.
Therefore, the Trident Mobile Fluoroscopy System is a medical imaging device, specifically a mobile fluoroscopy system, and not an IVD.
N/A
Intended Use / Indications for Use
The Trident Mobile Fluoroscopy System is designed to provide fluoroscopic and spot-film images of the patient during diagnostic, surgical and interventional procedures. Examples of clinical application may include cholangiography, endoscopy, urologic, orthopedic, neurologic, vascular, cardiac, critical care and emergency room procedures.
Product codes (comma separated list FDA assigned to the subject device)
JAA
Device Description
The Trident Mobile Fluoroscopy System is a mobile Image Intensified Fluoroscopic X-ray unit with a flat panel image receptor system. The Trident Mobile Fluoroscopy System consists of the following components: an X-ray generator and tube housing and a flat panel detector. An X-ray cabinet contains system elements such as the X-ray generator, power electronics for the imaging chain. The system offers an optional monitor for viewing the captured images.
The X-Ray Generator is located in the base of the C-Arm. High voltage is carried to the X-Ray tube across a set of cables and the X-Ray tube emits the X-Rays that are directed toward the control of the operator. The X-Rays pass through the patient and are captured by the flat panel image detector (FPD). The flat panels used in the Trident Mobile Fluoroscopy System are Varex models 3030DX or 2121DXV. This Varex series have been used in similar cleared devices (K192541, K220871). The Varex flat panel system used in the Trident uses Cesium Iodide as the image scintillator which is identical to that used in the reference device (K220871). These flat panel models differ only in the dimensions of the image receptor. FPD images are processed and can be displayed on the optional image monitor located on the Workstation. The Physician or system operator can view the images as they are displayed on the attached monitor or they may also choose to store the images for later review via the connection to the hospital DICOM system.
The C-Arm is designed to move into the required positions to allow for proper x-ray locations in relation to the patient for the procedure that is being performed. These procedures can be performed with or without a patient table. In order to accomplish this, the system is designed with the ability to rotate/swivel to obtain different appropriate viewing angles.
The systems movement is manually adjusted with the exception of the z-axis. This is motorized with the controls on the C-arm. The release of x-ray is controlled using a footswitch and/or a hand controller.
Mentions image processing
Yes
Mentions AI, DNN, or ML
Not Found
Input Imaging Modality
Fluoroscopic X-ray, Radiographic X-ray
Anatomical Site
Not Found
Indicated Patient Age Range
Not Found
Intended User / Care Setting
Not Found
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)
Non-clinical tests were conducted on finished representative product and using the methods outlined in standards IEC 60601-1, IEC 60601-1-2, EN 60601-1-6, IEC 60601-1-3, IEC 60601-2-54, IEC 60601-2-43.
Image Comparative Testing: Comparative images using the Trident Mobile Fluoroscopy System and the GE predicate device were taken to reflect usage conditions of the device. The images taken used a pelvic phantom as well as a Primus phantom. Upon review by a certified radiologic they were found to be clinically acceptable based on a comparison to the predicate GE device.
Software Verification and Validation Testing: The software has been documented for an Enhanced Documentation Level (Moderate Level of Concern) per FDA's Guidance Document "Guidance for the Content of Premarket Submissions for Device Software Functions" issued on June 14, 2023.
Key Metrics (Sensitivity, Specificity, PPV, NPV, etc.)
Not Found
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.
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.
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
§ 892.1650 Image-intensified fluoroscopic x-ray system.
(a)
Identification. An image-intensified fluoroscopic x-ray system is a device intended to visualize anatomical structures by converting a pattern of x-radiation into a visible image through electronic amplification. This generic type of device may include signal analysis and display equipment, patient and equipment supports, component parts, and accessories.(b)
Classification. Class II (special controls). An anthrogram tray or radiology dental tray intended for use with an image-intensified fluoroscopic x-ray system only is exempt from the premarket notification procedures in subpart E of part 807 of this chapter subject to the limitations in § 892.9. In addition, when intended as an accessory to the device described in paragraph (a) of this section, the fluoroscopic compression device is exempt from the premarket notification procedures in subpart E of part 807 of this chapter subject to the limitations in § 892.9.
0
June 26, 2024
Image /page/0/Picture/1 description: The image shows the logo of the U.S. Food and Drug Administration (FDA). On the left is the seal of the Department of Health & Human Services. To the right of the seal is the FDA logo, which consists of the letters "FDA" in a blue square, followed by the words "U.S. FOOD & DRUG" in blue, and the word "ADMINISTRATION" in a smaller font size below.
Dornier MedTech America % John Hoffer VP Quality/Regulatory 1155 Roberts Blvd KENNESAW, GA 30144
Re: K233380
Trade/Device Name: Trident Mobile Fluoroscopy System Regulation Number: 21 CFR 892.1650 Regulation Name: Image-Intensified Fluoroscopic X-Ray System Regulatory Class: Class II Product Code: JAA Dated: May 24, 2024 Received: May 24, 2024
Dear John Hoffer:
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 (the 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. 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 available 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.
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.
Additional information about changes that may require a new premarket notification are provided in the FDA guidance documents entitled "Deciding When to Submit a 510(k) for a Change to an Existing Device" (https://www.fda.gov/media/99812/download) and "Deciding When to Submit a 510(k) for a Software Change to an Existing Device" (https://www.fda.gov/media/99785/download).
1
Your device is also subject to, among other requirements, the Quality System (QS) regulation (21 CFR Part 820), which includes, but is not limited to, 21 CFR 820.30, Design controls; 21 CFR 820.90, Nonconforming product; and 21 CFR 820.100, Corrective and preventive action. Please note that regardless of whether a change requires premarket review, the QS regulation requires device manufacturers to review and approve changes to device design and production (21 CFR 820.30 and 21 CFR 820.70) and document changes and approvals in the device master record (21 CFR 820.181).
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 Part 803) for devices or postmarketing safety reporting (21 CFR Part 4, Subpart B) for combination products (see https://www.fda.gov/combination-products/guidance-regulatory-information/postmarketing-safety-reportingcombination-products); good manufacturing practice requirements as set forth in the quality systems (QS) regulation (21 CFR Part 820) for devices or current good manufacturing practices (21 CFR Part 4, Subpart A) for combination products; and, if applicable, the electronic product radiation control provisions (Sections 531-542 of the Act); 21 CFR Parts 1000-1050.
Also, please note the regulation entitled, "Misbranding by reference to premarket notification" (21 CFR 807.97). For questions regarding the reporting of adverse events under the MDR regulation (21 CFR Part 803), please go to https://www.fda.gov/medical-device-safety/medical-device-reportingmdr-how-report-medical-device-problems.
For comprehensive regulatory information about mediation-emitting products, including information about labeling regulations, please see Device Advice (https://www.fda.gov/medicaldevices/device-advice-comprehensive-regulatory-assistance) and CDRH Learn (https://www.fda.gov/training-and-continuing-education/cdrh-learn). 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 (https://www.fda.gov/medical-device-advice-comprehensive-regulatoryassistance/contact-us-division-industry-and-consumer-education-dice) for more information or contact DICE by email (DICE@fda.hhs.gov) or phone (1-800-638-2041 or 301-796-7100).
Sincerely,
Lu Jiang
Lu Jiang, Ph.D. Assistant Director Diagnostic X-Ray Systems Team DHT8B: Division of Radiological Imaging Devices and Electronic Products OHT8: Office of Radiological Health Office of Product Evaluation and Quality Center for Devices and Radiological Health
2
510(k) Number (if known)
Device Name
Trident Mobile Fluoroscopy System
Indications for Use (Describe)
The Trident Mobile Fluoroscopy System is designed to provide fluoroscopic and spot-film images of the patient during diagnostic, surgical and interventional procedures. Examples of clinical application may include cholangiography, endoscopy, urologic, neurologic, vascular, cardiac, critical care and emergency room procedures.
Type of Use (Select one or both, as applicable)
X Prescription Use (Part 21 CFR 801 Subpart D)
□ Over-The-Counter Use (21 CFR 801 Subpart C)
CONTINUE ON A SEPARATE PAGE IF NEEDED.
This section applies only to requirements of the Paperwork Reduction Act of 1995.
DO NOT SEND YOUR COMPLETED FORM TO THE PRA STAFF EMAIL ADDRESS BELOW.
The burden time for this collection of information is estimated to average 79 hours per response, including the time to review instructions, search existing data sources, gather and maintain the data needed and complete and review the collection of information. Send comments regarding this burden estimate or any other aspect of this information collection, including suggestions for reducing this burden, to:
Department of Health and Human Services Food and Drug Administration Office of Chief Information Officer Paperwork Reduction Act (PRA) Staff PRAStaff(@fda.hhs.qov
"An agency may not conduct or sponsor, and a person is not required to respond to, a collection of information unless it displays a currently valid OMB number."
3
510(k) SUMMARY
Dornier's Trident Mobile Fluoroscopy System
Submitter
Dornier MedTech America 1155 Roberts Blvd. Kennesaw, GA 30144 Date Prepared: June 25, 2024 Contact Person: John Hoffer Phone: 770-514-6163
Name of Device: Trident Mobile Fluoroscopy System Common or Usual Name: Image Intensified Fluoroscopic X-ray System Classification Name: Image Intensified Fluoroscopic X-ray System Regulatory Class/ Regulation Number: Class II / 21 C.F.R. § 892.1650 Product Code: JAA
Predicate Device OEC 9900 Elite (K120613) Common or Usual Name: Image Intensified Fluoroscopic X-ray System Classification Name: Image Intensified Fluoroscopic X-ray System Regulatory Class/ Regulation Number: Class II / 21 C.F.R. § 892.1650 Product Code: JAA/OXO
Intended Use / Indications for Use
The Trident Mobile Fluoroscopy System is designed to provide fluoroscopic and spot-film images of the patient during diagnostic, surgical and interventional procedures. Examples of clinical application may include cholangiography, endoscopy, urologic, orthopedic, neurologic, vascular, cardiac, critical care and emergency room procedures.
Device Description/ Technological Characteristics
The Trident Mobile Fluoroscopy System is a mobile Image Intensified Fluoroscopic X-ray unit with a flat panel image receptor system. The Trident Mobile Fluoroscopy System consists of the following components: an X- ray generator and tube housing and a flat panel detector. An X-ray cabinet contains system elements such as the X- ray generator, power electronics for the imaging chain. The system offers an optional monitor for viewing the captured images.
The X-Ray Generator is located in the base of the C-Arm. High voltage is carried to the X-Ray tube across a set of cables and the X-Ray tube emits the X-Rays that are directed toward the control of the operator. The X-Rays pass through the patient and are captured by the flat panel image detector (FPD). The flat panels used in the Trident Mobile Fluoroscopy System are Varex models 3030DX or 2121DXV. This Varex series have been used in similar cleared devices (K192541, K220871). The Varex flat panel system used in the Trident uses Cesium lodide as the image scintillator which is identical to that used in the reference device (K220871). These flat panel models differ only in the dimensions of the image receptor. FPD images are processed and can be displayed on the optional image monitor located on the Workstation. The Physician or system operator can view the images as they are displayed on the attached monitor or they may also choose to store the images for later review via the connection to the hospital DICOM system.
4
The C-Arm is designed to move into the required positions to allow for proper x-ray locations in relation to the patient for the procedure that is being performed. These procedures can be performed with or without a patient table. In order to accomplish this, the system is designed with the ability to rotate/swivel to obtain different appropriate viewing angles.
The systems movement is manually adjusted with the exception of the z-axis. This is motorized with the controls on the C-arm. The release of x-ray is controlled using a footswitch and/or a hand controller.
The following table compares the technological characteristics of the Trident Mobile Fluoroscopy System and the primary predicate device.
| | Trident Mobile
Fluoroscopy System | OEC 9900 Elite | Dornier Nautilus |
|----------------------------------------------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| | Subject Device | Primary Predicate
K120613 | Reference Device
K220871 |
| 510(k) Number | | | |
| Intended Use/
Indications for Use | The Trident Mobile
Fluoroscopy System is
designed to provide
fluoroscopic and spot-
film images of the
patient during
diagnostic, surgical
and interventional
procedures. Examples
of clinical application
may include
cholangiography,
endoscopy, urologic,
orthopedic, neurologic,
vascular, cardiac;
critical care and
emergency room
procedures. | The OEC® 9900 Elite
Mobile Fluoroscopy
System is designed to
provide fluoroscopic
and spot-film images of
the patient during
diagnostic, surgical
and interventional
procedures. Examples
of clinical application
may include
cholangiography,
endoscopy, urologic,
orthopedic, neurologic,
vascular, cardiac;
critical care and
emergency room
procedures. | The Dornier Nautilus is
an image intensified,
fluoroscopic x-ray
system that is intended
for use in a wide field of
applications, including
all general
examinations in urology
and gynecology, as well
as endoscopic and
contrast examinations,
imaging with
radiography and/or
fluoroscopy on patients
in either the horizontal
or vertical position. |
| X-Ray Generator/Monoblock | | | |
| Input Power | 115 / 230 V | 120V,200V,220V,230V,
240V | 480VAC |
| Power Rating (kW) | 20 kW | 15kW | 80kW |
| Maximum kVp | 120 kVp | 120 kVp | 150kVp |
| Maximum Rating
(mA@kVp) | 200mA | Up to 75mA | 1000mA |
| kVp Range,
radiographic | 40 – 120kVp | 40 - 120kVp | 40-150kVp |
| mA Range,
radiographic | Up to 200mA | Up to 75mA | 10-1000mA |
| mAs Range | Up to 100 | Up to 300 | 0.4-1000 |
| kVp Range,
Fluorographic | 40 – 120kVp | 40 - 120kVp | 40-125kVp |
| mA Range,
Fluorographic | Pulsed Fluoroscopy -
up to 8mA (normal).
HCF - up to 30mA | Pulsed Fluoroscopy
0.2 – 10mA normal
1.0 – 20mA HCF | Pulsed
Fluoroscopy/HCF
16-80mA, |
| Fluoroscopy
Capture Rate
(frames/second) | With 2121 FPD – 0.5,
1, 2, 3, 4, 5, 6, 7.5,
12.5, 15
With 3030 FPD – 0.5,
1, 2, 3, 4, 5, 6, 7.5, 8,
12.5, 15, 25 | 1, 2, 4, 8 | 0.25-30 |
| Digital Cine Mode | Yes | Yes | Yes |
| Digital Cine
(frames/second) | With 2121 FPD – 0.5,
1, 2, 3, 4, 5, 6, 7.5,
12.5, 15
With 3030 FPD – 0.5,
1, 2, 3, 4, 5, 6, 7.5, 8,
12.5, 15, 25 | Up to 30 | Up to 30 |
| X-ray Tube Housing | | | |
| X-Ray Tube Type | Rotating anode | Rotating anode | Rotating anode |
| Focal Size | 0,3 mm and 0,6 mm | 0.3mm and 0.6mm | 1.2mm;: 0.6mm |
| Heat Capacity | 2106 kJ | 1200kJ | 3500kJ |
| SID | 1041mm | 1041mm | 1100-1250mm |
| X-ray Tube Retraction | none | none | Motorized |
| Collimator | RALCO
R650/027/QDASM | Tungsten Collimator | RALCO R650 DAMS |
| Imaging | Flat Panel Detector | 12" Image Intensifier | Flat Panel Detector |
| Manufacturer | Varex | GE/OEC | Varex |
| Model / Type | PAX SCAN 3030 DX
OR 2121DXV | Tri-mode 12"/9"/6" | PAX SCAN 4343DXV |
| Image receptor/x-
ray detection
material | Amorphous
Silicone/Cesium
iodide | | Amorphous
Silicone/Cesium iodide |
| Maximum Active Area | 3030 -298mm x
298mm
2121 – 209.9 x
209.9mm | | 42.7 x 42.7cm |
| Pixel Size | 3030 - 194 μm
2121 - 205 μm | | 139 μm |
| Number of pixels
(maximum
detector matrix
size) | 3030 - 1536 x 1536
2121 - 1024 x 1024 | 1000k x 1000k CCD | 3032 x 3032 |
| Resolution | 3030 –
2.58 lp/mm @ 15 fps
1.29 lp/mm @
30 fps
2121 –
2.43 lp/mm @ 15 fps
1.22 lp/mm @ 30 fps | 12": 1.6 lp/mm
9": 2.2 lp/mm
6": 2.6 lp/mm | 1.8 lp/mm @30fps
3.6 lp/mm @15fps |
| Dose Indicator | Display of applied
dose in μGy | | Display of applied dose in
μGy |
| Image Processing | | | |
| Image Resolution | 3030 - 1516 x 1516
2121 - 1004 x 1004 | 1000 x 1000 | Up to 3072 x 3072 |
| Image Processor | Technix | GE/OEC | Technix |
5
6
| Air Kerma Display | Calculated by Image
processing SW
Cumulative air kerma rate
is shown on the monitors
at the end of exposure
Displays real time
exposure rate | | Calculated by Image
processing SW
Cumulative air kerma rate
is shown on the monitors
at the end of exposure
Displays real time
exposure rate |
|-----------------------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------|------|----------------------------------------------------------------------------------------------------------------------------------------------------------------|
| Image
Storage
Capacity | 3030 - approx.
110,000 images
2121 - approx..
250,000 | 1000 | >110,000 images
(depending on hard disk
size and image file size) |
| Real-time
Noise
Reduction | Yes | Yes | Yes |
| Real-time
Edge
Enhancement | Yes | Yes | Yes |
| Network Connectivity
DICOM 3.0 | Yes | Yes | Yes |
As demonstrated in the substantial equivalence table, the subject device, and reference devices have very similar technological characteristics. Any differences in technological characteristics are minor and do not raise new or different questions of safety or effectiveness. Performance data demonstrate that Dornier's Trident Mobile Fluoroscopy System is as safe and effective as the OEC 9900 Elite and Dornier Nautilus. Thus, the Trident Mobile Fluoroscopy System is substantially equivalent to the predicate and reference device.
Performance Data
The Trident Mobile Fluoroscopy System was tested in accordance to the FDA recognized consensus standards listed below:
These non-clinical tests were conducted on finished representative product and using the methods outlined in these standards. This performance testing confirmed that the Trident Mobile Fluoroscopy System contains all of the applicable requirements of the following standards:
Electrical Safety and EMC
- IEC 60601-1:2005, AMD1:2012,Medical electrical equipment Part 1: General ● requirements for basic safety and essential performance
- IEC 60601-1-2:2014 Medical electrical equipment - Part 1-2: General requirements for basic safety and essential performance - Collateral standard: Electromagnetic compatibility - Requirements and tests
- EN 60601-1-6:2010+A1:2015, IEC 62366-2: 2007, A1:2014 Usability, .
- IEC 60601-1-3:2008,A1:2013 1 Medical electrical equipment. Part 1: General ● requirements for safety; general requirements for radiation protection in diagnostic X-ray equipment
- . IEC 60601-2-54:2009, A1 2015,A2 2019 Medical electrical equipment. Part 2-54: Particular requirements for the basic safety and essential performance of X-ray equipment for radiography and radioscopy
- IEC 60601-2-43:2010 Particular requirements for the basic safety and essential . performance of X-ray equipment for interventional procedures
7
IEC 62304-2006/A1:2015 Software for Medical Devices Processes concerning software life cycle
Image Comparative Testing
Comparative images using the Trident Mobile Fluoroscopy System and the GE predicate device were taken to reflect usage conditions of the device. The images taken used a pelvic phantom as well as a Primus phantom. Upon review by a certified radiologic they were found to be clinically acceptable based on a comparison to the predicate GE device.
Software Verification and Validation Testing:
The software has been documented for an Enhanced Documentation Level (Moderate Level of Concern) per FDA's Guidance Document "Guidance for the Content of Premarket Submissions for Device Software Functions" issued on June 14, 2023.
Clinical testing is not necessary for the Trident Mobile Fluoroscopy System as the subject device contains the same fundamental technology as the predicate device, as well as detectors that have already been cleared. Successful bench and image testing results demonstrate substantial equivalence to the predicate device.
The results of the non-clinical performance standard testing further supports the safe and effective use of the Trident Mobile Fluoroscopy System.
Substantial Equivalence/Conclusions
The Trident Mobile Fluoroscopy System and the predicate device have the same indications for use and intended use, and similar technological characteristics and principles of operation. The minor technological differences between the Trident Mobile Fluoroscopy System and the predicate device do not present new or different questions of safety or effectiveness. Furthermore, performance testing has demonstrated that the subject device is as safe and effective as the predicate device. In addition, the subject and predicate device have similar principles of operation. Thus, the Trident Mobile Fluoroscopy System is substantially equivalent to the predicate device.