Nexus DRTM Digital X-ray Imaging System (with PaxScan 4336Wv4)
Device Facts
| Record ID | K161459 |
|---|---|
| Device Name | Nexus DRTM Digital X-ray Imaging System (with PaxScan 4336Wv4) |
| Applicant | Varian Medical Systems, X-Ray Products-Infimed |
| Product Code | MQB · Radiology |
| Decision Date | Sep 6, 2016 |
| Decision | SESE |
| Submission Type | Traditional |
| Regulation | 21 CFR 892.1680 |
| Device Class | Class 2 |
Indications for Use
The Varian Nexus DR™ Digital X-ray Imaging System is a high resolution digital imaging system intended to replace conventional film techniques, or existing digital systems, in multipurpose or dedicated applications specified below. The Nexus DR™ Digital X-ray Imaging System enables an operator to acquire, display, process, export images to portable media, send images over a network for long term storage and distribute hardcopy images with a laser printer. I mage processing algorithms enable the operator to bring out diagnostic details difficult to see using conventional imaging techniques. Images can be stored locally for temporary storage. The major system components include an image receptor, computer, monitor and imaging software. The Varian Nexus DR™ Digital X-ray Imaging System is intended for use in general radiographic examinations and applications (excluding fluoroscopy, angiography, and mammography).
Device Story
Nexus DR Digital X-ray Imaging System captures X-ray images using PaxScan 4336Wv4 flat panel detector; system includes computer, monitor, and imaging software. Detector uses vTrigger technology to detect exposure without direct generator integration; user sets receptor to 'ready' mode before manual exposure. System processes raw data to enhance diagnostic detail; displays images on monitor; supports export to portable media, network storage, or hardcopy printing. Used in clinical settings by trained operators for general radiography. Benefits include high-resolution digital imaging, faster processing times compared to conventional film, and improved diagnostic visualization via image processing algorithms.
Clinical Evidence
No clinical data provided. Substantial equivalence established through non-clinical bench testing, including verification and validation protocols consistent with FDA guidance for solid-state X-ray imaging devices. Performance metrics evaluated include spatial resolution, modulation transfer function (MTF), detective quantum efficiency (DQE), and signal-to-noise ratio (SNR).
Technological Characteristics
System components: PaxScan 4336Wv4 flat panel detector (a-Si sensor array with CsI or Gd2O2S:TB scintillator), Intel-based PC, monitor. Connectivity: DICOM 3.0. Power: 110/120V or 230/240V, 50/60 Hz. Detector dimensions: 17" x 14". Pixel size: 139 x 139 microns. Dynamic range: 16 bits. Software: Windows 10. vTrigger technology enables exposure detection without generator interface.
Indications for Use
Indicated for general radiographic examinations and applications in patients requiring diagnostic imaging, excluding fluoroscopy, angiography, and mammography.
Regulatory Classification
Identification
A stationary x-ray system is a permanently installed diagnostic system intended to generate and control x-rays for examination of various anatomical regions. This generic type of device may include signal analysis and display equipment, patient and equipment supports, component parts, and accessories.
Special Controls
*Classification.* Class II (special controls). A radiographic contrast tray or radiology diagnostic kit intended for use with a stationary 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.
Predicate Devices
- Stingray DR Digital Radiographic System (K992794)
Reference Devices
- Nexus DRF Digital X-ray Imaging System (K130318)
Submission Summary (Full Text)
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Food and Drug Administration 10903 New Hampshire Avenue Document Control Center - WO66-G609 Silver Spring, MD 20993-0002
September 6, 2016
Varian Medical Systems, X-ray Products – InfiMed % Ms. Catherine Mulcahy Regulatory Affairs Manager 121 Metropolitan Drive LIVERPOOL NY 13088
Re: K161459
Trade/Device Name: Nexus DR 100 Digital X-ray Imaging System (with PaxScan 4336Wv4) Regulation Number: 21 CFR 892.1680 Regulation Name: Stationary x-ray system Regulatory Class: II Product Code: MOB Dated: August 5, 2016 Received: August 8, 2016
Dear Ms. Mulcahy:
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.
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If you desire specific advice for your device on our labeling regulation (21 CFR Part 801), please contact the Division of Industry and Consumer Education 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. 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 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 Industry and Consumer Education at its toll-free number (800) 638-2041 or (301) 796-7100 or at its Internet address
http://www.fda.gov/MedicalDevices/ResourcesforYou/Industry/default.htm.
Sincerely yours,
Robert Ocks
Robert Ochs. Ph.D. Director Division of Radiological Health Office of In Vitro Diagnostics and Radiological Health Center for Devices and Radiological Health
Enclosure
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# Indications for Use
510(k) Number (if known) K161459
#### Device Name
Nexus DRTM Digital X-ray Imaging System (with PaxScan 4336Wv4)
#### Indications for Use (Describe)
The Varian Nexus DR™ Digital X-ray Imaging System is a high resolution digital imaging system intended to replace conventional film techniques, or existing digital systems, in multipurpose or dedications specified below. The Nexus DR™ Digital X-ray Imaging System enables an operator to acquire, display, process, export images to portable media, send images over a network for long term storage and distribute hardcopy images with a laser printer. I mage processing algorithms enable the operator to bring out diagnostic details difficult to see using conventional imaging techniques. Images can be stored locally for temporary storage. The major system components include an image receptor, computer, monitor and imaging software.
The Varian Nexus DR™ Digital X-ray Imaging System is intended for use in general radiographic examinations and applications (excluding fluoroscopy, angiography, and mammography).
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)
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Image /page/3/Picture/0 description: The image shows the Varian Medical Systems logo. The logo consists of the word "VARIAN" in black, with a blue accent mark above the "I". Below "VARIAN" is the text "medical systems" in black. To the right of the logo is the text "A partner for life", with "A partner for" in gray and "life" in blue.
# Section 3: 510(k) Summary
| Date Prepared: | 5/25/2016 | | |
|-----------------------------|---------------------------------------------------------------------------------------------------|----------------|--------------|
| Contact Person: | Catherine Mulcahy<br>Regulatory Affairs Manager | | |
| Telephone: | 315-234-6853 | | |
| Fax: | 315-234-6801 | | |
| Submitter Name: | Varian Medical Systems, X-Ray Products - InfiMed<br>121 Metropolitan Drive<br>Liverpool, NY 13088 | | |
| Device Trade Name: | Nexus DRTM Digital X-ray Imaging System<br>(with PaxScan 4336Wv4) | | |
| Common Name: | Digital Radiographic System | | |
| Regulation: | 21 CFR 892.1680 | | |
| Classification Name: | Stationary X-ray System | | |
| Primary Product Code: | MQB | | |
| Primary Predicate Device: | Stingray DR Digital Radiographic System | 510(k) Number: | Product Code |
| | | K992794 | MQB |
| Reference Predicate Device: | Nexus DRFTM Digital X-ray Imaging System | 510(k) Number: | Product Code |
| | | K130318 | JAA, MQB |
#### Device Description:
The Varian Nexus DR™ Digital X-ray Imaging System is a high resolution digital imaging system designed for digital X-ray imaging through the use of an X-ray detector. The Varian Nexus DR™ Digital X-ray Imaging System is designed to support general radiographic (excluding fluoroscopy, angiography, and mammography) procedures through a single common imaging platform.
The modified device consists of an X-ray imaging receptor, Varian PaxScan 4336Wv4, computer, monitor, and the digital imaging software.
#### Intended Use:
The Varian Nexus DR™ Digital X-ray Imaging System is a high resolution digital imaging system intended to replace conventional film techniques, or existing digital systems, in multipurpose or dedicated applications specified below. The Nexus DR™ Digital X-ray Imaging System enables an operator to acquire, display, process, export images to portable media, send images over a network for long term storage and
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Image /page/4/Picture/0 description: The image shows the logo for Varian Medical Systems. The logo consists of the word "VARIAN" in black, with a blue accent mark over the "I". Below "VARIAN" is the text "medical systems" in a smaller font. To the right of the logo is the tagline "A partner for life", with "A partner for" in gray and "life" in blue.
distribute hardcopy images with a laser printer. Image processing algorithms enable the operator to bring out diagnostic details difficult to see using conventional imaging techniques. Images can be stored locally for temporary storage. The major system components include an image receptor, computer, monitor and imaging software.
The Varian Nexus DR™ Digital X-ray Imaging System is intended for use in general radiographic examinations and applications (excluding fluoroscopy, angiography, and mammography).
### Technological Characteristics Comparison:
The Nexus DR™ Digital X-ray Imaging System (with PaxScan 4336Wv4) supports the same modality as the predicate devices with similar components or imaging concepts. and delivers equivalent or better image quality as the predicate devices. The comparison chart below reveals that functions performed by the predicate devices are performed by the modified device for the DR application. Therefore, the modified device is substantially equivalent to the predicate devices.
However, the modified device, Nexus DR™ Digital X-ray Imaging System (with PaxScan 4336Wv4), has the ability to interface with the Varian PaxScan 4336Wv4 wireless detector with vTrigger capability. The Nexus DR™ Digital X-ray Imaging System (with PaxScan 4336Wv4) is not integrated with the x-ray generator. With vTrigger, there is no intercepting of the Prep/Expose signals from the generator. The receptor is placed in a "ready" mode by the user and on the Nexus DR™ User Interface. The user operates the generator (technique and exposure switch) when the receptor indicates it is "ready." The receptor captures the exposure once it arrives and acquires the data.
| Feature/Item | Nexus DRFTM<br>Digital X-ray Imaging<br>System<br>Reference Predicate | Stingray DR<br>Digital Radiographic<br>System<br>Primary Predicate | Nexus DRTM<br>Digital X-ray Imaging<br>System<br>Subject Device |
|----------------------------|-----------------------------------------------------------------------|--------------------------------------------------------------------|-----------------------------------------------------------------|
| Device Type | | | |
| 510 (k) Number | K130318 | K992794 | K161459 |
| Flat Panel<br>Detector | Varian<br>PaxScan 4343R | Trixell<br>Pixium 4600 | Varian<br>PaxScan 4336Wv4 |
| Detector<br>Material | a-Si sensor array with<br>CsI or Gd2O2S:TB<br>scintillator | a-Si sensor array with<br>CsI scintillator | a-Si sensor array with<br>CsI or Gd2O2S:TB<br>scintillator |
| Detector<br>Dimensions | 17" x 17" | 17" x 17" | 17" x 14" |
| Pixel<br>Size | 139 x 139 microns | 143 x 143 microns | 139 x 139 microns |
| Detector Element<br>Matrix | 3072 x 3072 | 2981 x 3021 | 3072 x 2560 |
| Dynamic<br>Range | 14 bits | 14 bits | 16 bits |
#### Comparison Chart:
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Image /page/5/Picture/0 description: The image shows the Varian Medical Systems logo. The logo consists of the word "VARIAN" in black, with a blue accent over the "I", and the words "medical systems" in black below it. To the right of the logo is the text "A partner for life", with "A partner for" in gray and "life" in blue.
| Uniform<br>Density | 1.63 | N/A | 1.52 |
|------------------------------------|------------------------------------------------------------------------------------------------------------------|------------------------------------|-----------------------------------------------------------------------------------------------------------------|
| Spatial<br>Resolution | 3.2 lp/mm | 3.51 lp/mm | 3.2 lp/mm |
| Sensitivity | 128 @ 1.1uGy/frame<br>395 @ 3.9uGy/frame<br>1060 @ 10uGy/frame<br>3143 @ 30uGy/frame<br>(14-bit reference panel) | N/A | 540 @ 1.1uGy/frame<br>1206 @ 3.9uGy/frame<br>4290 @ 10uGy/frame<br>12804@ 30uGy/frame<br>(16-bit subject panel) |
| Signal to Noise<br>Ratio | 67 @ 2.8uGy/frame<br>96 @ 7uGy/frame<br>147 @ 17uGy/frame<br>275 @ 50uGy/frame | N/A | 73 @ 2.8uGy/frame<br>117 @ 7uGy/frame<br>174 @ 17uGy/frame<br>285 @ 50uGy/frame |
| Modulation<br>Transfer<br>Function | 0.521 @ 1cycle/mm<br>0.206 @ 2cycles/mm<br>0.08 @ 3cycles/mm | N/A | 0.551 @ 1cycle/mm<br>0.234 @ 2cycles/mm<br>0.099 @ 3cycles/mm |
| Detective<br>Ouantum<br>Efficiency | 0.242 @ 1cycle/mm<br>0.125 @ 2cycles/mm<br>0.04 @ 3cycles/mm | N/A | 0.232 @ 1cycle/mm<br>0.15 @ 2cycles/mm<br>0.07 @ 3cycles/mm |
| External<br>Connectivity | DICOM<br>3.0 Compatible | DICOM<br>3.0 Compatible | DICOM<br>3.0 Compatible |
| Operator<br>Console | Graphical User<br>Interface | Graphical User<br>Interface | Graphical User<br>Interface |
| Image<br>Processor | Intel Based PC,<br>nvidia GPU | Pentium Based PC | Intel CPU Based PC |
| Image<br>Storage | Hard Drive | Hard Drive | Hard Drive |
| Operating<br>System | Windows 7 | Windows NT | Windows 10 |
| Total Image<br>Processing Time | 10 seconds<br>per image | 30 seconds<br>per image | 10 seconds<br>per image |
| Power<br>Requirements | 110/120V,<br>230/240V,<br>50/60 Hz | 110/120V,<br>230/240V,<br>50/60 Hz | 110/120V,<br>230/240V,<br>50/60 Hz |
#### Non-clinical Tests Discussion:
Non-clinical Data submitted is consistent with FDA guidance document "Guidance for Industry and/or for FDA Reviewers/Staff and/or Compliance: Guidance for the Submission of 510(k)'s for Solid State X-ray Imaging Devices" available at the website http://www.fda.gov/downloads/MedicalDevices/DeviceRegulationandGuidance/Guidanc eDocuments/ucm073781.pdf.
Validation was completed in accordance with the Validation Protocols included with this submission. Protocols were designed, executed and documented according to the Design Validation process with predetermined test methods and corresponding acceptance criteria. In conclusion, all release criteria have been met and the Nexus DR™ Digital Xray Imaging System (with PaxScan 4336Wv4) is as safe and effective as the predicate devices and does not raise different questions of safety and effectiveness.
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Image /page/6/Picture/0 description: The image shows the logo for Varian Medical Systems. The logo consists of the word "VARIAN" in black, with the "i" in "VARIAN" being blue. Below "VARIAN" is the text "medical systems" in black. To the right of the logo is the text "A partner for life", with "A partner for" in gray and "life" in blue.
## Clinical Tests Discussion:
Clinical Data submitted is consistent with FDA guidance document "Guidance for Industry and/or for FDA Reviewers/Staff and/or Compliance: Guidance for the Submission of 510(k)'s for Solid State X-ray Imaging Devices" available at the website http://www.fda.gov/downloads/MedicalDevices/DeviceRegulationandGuidance/Guidanc eDocuments/ucm073781.pdf.
### Conclusion:
Based upon the results of Verification and Validation testing, the Nexus DR™ Digital Xray Imaging System (with PaxScan 4336Wv4) has no new indications for use, has no significant technological differences, and is as safe and effective as, does not raise different questions of safety and effectiveness and is therefore substantially equivalent to the above listed current legally marketed predicate devices.
