K162971 · Siemens Medical Solutions USA, Inc. · KPR · Nov 22, 2016 · Radiology
Device Facts
Record ID
K162971
Device Name
Multix Fusion Max
Applicant
Siemens Medical Solutions USA, Inc.
Product Code
KPR · Radiology
Decision Date
Nov 22, 2016
Decision
SESE
Submission Type
Special
Regulation
21 CFR 892.1680
Device Class
Class 2
Attributes
Pediatric
Indications for Use
Multix Fusion Max system is a radiographic system used in hospitals, clinics, and medical practices. Multix Fusion Max enables radiographic exposures of the whole body including: skull, chest, abdomen, and extremities and may be used on pediatic, adult and bariatic patients. Exposures may be taken with the patient sitting, standing, or in the prone position. The Multix Fusion Max system is not meant for mammography. Multix Fusion Max uses a mobile(wired), or a fixed (integrated) or wireless digital detector for generating diagnostic images by converting x-rays into image signals. The Multix Fusion Max is also designed to be used with conventional film/screen or Computed Radiography (CR) cassettes.
Device Story
Modular radiographic X-ray system; includes ceiling-mounted tube, Bucky wall stand, motorized table, X-ray generator, and digital detectors (fixed/wireless). Inputs: X-ray radiation; transforms via digital detectors (a-Si/CsI) into image signals. Used in hospitals/clinics by healthcare professionals. Output: Diagnostic images displayed on high-resolution monitor. Supports clinical decision-making by providing anatomical visualization. Benefits: Enables versatile, high-quality radiographic imaging across diverse patient populations.
Clinical Evidence
Bench testing only. No clinical data provided. Performance supported by verification and validation testing, including functional tests (exposure workflow, detector sharing, image resend) and image quality assessments (flat field uniformity, DQE, MTF).
Indicated for radiographic imaging of the whole body (skull, chest, abdomen, extremities) in pediatric, adult, and bariatric patients. Suitable for use in sitting, standing, or prone positions. Not indicated for 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.
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Food and Drug Administration 10903 New Hampshire Avenue Document Control Center - WO66-G609 Silver Spring, MD 20993-0002
November 22, 2016
Siemens Medical Solutions USA, Inc. % Ms. Denise Adams Regulatory Affairs Specialist 40 Liberty Boulevard, 65-1A MALVERN PA 19355
Re: K162971
Trade/Device Name: Multix Fusion Max Regulation Number: 21 CFR 892.1680 Regulation Name: Stationary x-ray system Regulatory Class: II Product Code: KPR Dated: October 21, 2016 Received: October 25, 2016
Dear Ms. Adams:
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 Oolo
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)
## K162971
Device Name Multix Fusion Max
#### Indications for Use (Describe)
Multix Fusion Max system is a radiographic system used in hospitals, clinics, and medical practices. Multix Fusion Max enables radiographic exposures of the whole body including: skull, chest, abdomen, and extremities and may be used on pediatic, adult and bariatic patients. Exposures may be taken with the patient sitting, standing, or in the prone position. The Multix Fusion Max system is not meant for mammography.
Multix Fusion Max uses a mobile(wired), or a fixed (integrated) or wireless digital detector for generating diagnostic images by converting x-rays into image signals. The Multix Fusion Max is also designed to be used with conventional film/screen or Computed Radiography (CR) cassettes.
X Prescription Use (Part 21 CFR 801 Subpart D)
Over-The-Counter Use (21 CFR 801 Subpart C)
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## Healthcare
## 510(k) Summary: Multix Fusion Max
Company: Siemens Medical Solutions USA, Inc. 40 Liberty Boulevard, 65-1A Malvern, PA 19355
Date Prepared: November 21, 2016
This 510(k) summary of safety and effectiveness information is being submitted in accordance with the requirements of SMDA 1990 and 21 CFR § 807.92.
#### 1. General Information
Importer / Distributor
Siemens Medical Solutions USA, Inc. 40 Liberty Boulevard, 65-1A Malvern, PA 19355 Establishment Registration Number 2240869
#### Location of Manufacturing Site
Siemens Shanghai Medical Equipment Ltd. 278 Zhou Zhu Road, Shanghai 201318, China Establishment Registration Number 3003202425
Siemens Healthcare GmbH, Business Unit XP Siemensstrasse 1 Forchheim, Germany 91301 Establishment Registration Number: 3004977335
#### 2. Contact Person
Denise Adams, RAC Regulatory Affairs Specialist Siemens Medical Solutions USA, Inc. 40 Liberty Boulevard, 65-1A Malvern, PA 19355 610-448-6139 adams.denise@siemens.com
40 Liberty Boulevard Malvern, PA 19355-9998 USA
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#### 3. Device Name and Classification
| Trade Name: | Multix Fusion Max |
|----------------------------|-------------------------|
| Classification Name: | Stationary X-Ray System |
| Classification Panel: | Radiology |
| Classification Regulation: | 21 CFR §892.1680 |
| Device Class: | Class II |
| Product Code: | KPR |
## 4. Legally Marketed Predicate Devices
| Primary Predicate | |
|-----------------------|-------------------------|
| Trade Name: | Multix Fusion |
| 510(k) #: | K142049 |
| Clearance Date: | December 18, 2014 |
| Classification Name: | Stationary X-Ray System |
| Classification Panel: | Radiology |
| CFR Section: | 21 CFR §892.1680 |
| Device Class: | Class II |
| Product Code: | KPR |
### Reference Predicate
|
| Trade Name: | YSIO Max |
|-----------------------|-------------------------|
| 510(k) #: | K133259 |
| Clearance Date: | January 24, 2014 |
| Classification Name: | Stationary X-Ray System |
| Classification Panel: | Radiology |
| CFR Section: | 21 CFR §892.1680 |
| Device Class: | Class II |
| Product Code: | KPR |
#### 5. Device Description
The Multix Fusion Max Radiography X-ray system is a modular system of x-ray components (ceiling suspension with X-ray tube, Bucky wall stand, Bucky table, X-ray generator, portable wireless and integrated detectors) same as the predicate the Multix Fusion. This 510(k) submission describes modifications to the predicate device the Multix Fusion cleared via K142049.
The following modifications have been made to the cleared predicate device and the system will be rebranded the Multix Fusion Max:
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#### Hardware
The following components are being integrated into the system: the Pixium 3543 EZh wireless detector, the Pixium 2430 EZ wireless detector; the Pixium 4343RCE fixed detector, a new wireless Bucky wall stand with motorized height adjustment, a new table that has a charging tray and a manual Bucky tray, and a new 92-line grid with a 13:1 ratio.
### Software
The operating system is being upgraded from Windows XP to Windows 7 and the software version will now be VE21.
### 6. Indication for Use
Multix Fusion Max system is a radiographic system used in hospitals, clinics, and medical practices. Multix Fusion Max enables radiographic exposures of the whole body including: skull, chest, abdomen, and extremities and may be used on pediatric, adult and bariatric patients. Exposures may be taken with the patient sitting, standing, or in the prone position. The Multix Fusion Max system is not meant for mammography.
Multix Fusion Max uses a mobile (wired), or a fixed (integrated) or wireless digital detector for generating diagnostic images by converting x-rays into image signals. The Multix Fusion Max is also designed to be used with conventional film/screen or Computed Radiography (CR) cassettes.
## 7. Substantial Equivalence
The Multix Fusion Max is a modification to the primary predicate device the Multix Fusion cleared via K142049. The Multix Fusion Max utilizes the same wireless detectors as the reference device the Ysio Max cleared via K133259. It is within the same classification regulation for the same indications for use and the same mechanical design as the predicate devices. The Multix Fusion Max is substantially equivalent to the predicate devices and documentation is provided to support a claim of substantial equivalence.
| | Multix Fusion Max<br>(subject) | Multix Fusion K142049<br>(primary predicate) | Comparison<br>Results |
|------------------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|-----------------------|
| Indications<br>for Use | The Multix Fusion Max<br>system is a radiographic<br>system used in hospitals,<br>clinics, and medical<br>practices. Multix Fusion Max<br>enables radiographic<br>exposures of the whole body<br>including: skull, chest,<br>abdomen, and extremities<br>and may be used on<br>pediatric, adult and bariatric<br>patients. Exposures may be<br>taken with the patient sitting. | The Multix Fusion system<br>is a radiographic system<br>used in hospitals, clinics,<br>and medical practices.<br>Multix Fusion enables<br>radiographic exposures of<br>the whole body including:<br>skull, chest, abdomen, and<br>extremities and may be<br>used on pediatric, adult and<br>bariatric patients.<br>Exposures may be taken<br>with the patient sitting. | Same |
### Comparison of Indications for Use
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| standing, or in the prone<br>position. The Multix Fusion<br>Max system is not meant for<br>mammography. | standing, or in the prone<br>position. The Multix<br>Fusion system is not meant<br>for mammography. |
|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| The Multix Fusion uses a<br>mobile (wired), or fixed<br>(integrated) or wireless<br>digital detector for<br>generating diagnostic images<br>by converting x-rays into<br>image signals. | The Multix Fusion uses a<br>mobile (wired), or fixed<br>(integrated) or wireless<br>digital detector for<br>generating diagnostic<br>images by converting x-<br>rays into image signals. |
| The Multix Fusion is also<br>designed to be used with<br>conventional film/ screen or<br>Computed Radiography<br>(CR) cassettes. | The Multix Fusion is also<br>designed to be used with<br>conventional film/ screen<br>or Computed Radiography<br>(CR) cassettes. |
# Comparison of Subject Device to the Primary Predicate Device
-
| Attribute | Multix Fusion Max (subject) | Multix Fusion K142049 (primary predicate) | Comparison Results |
|-------------------------------------------------------|---------------------------------------------------------------------------------|----------------------------------------------------------------------------------------------|-------------------------------------------------------------------------------------------------------------------------------------------|
| Ceiling mounted support (unchanged) | Semi-automated | Semi-automated | Same |
| X-ray tube assembly (unchanged) | 80 kW<br>Two-focus | 80 kW<br>Two-focus | Same |
| Collimator (unchanged) | Standard collimator(ACSS) | Standard collimator(ACSS) | Same |
| Patient Table | Radiographic table motorized with floating table top (wireless detector) | Radiographic table motorized with floating table top (wireless detector) | Charging tray |
| | Radiographic table motorized with floating table top (integrated detector) | Radiographic table motorized with floating table top (integrated detector) | Same |
| Bucky Wall Stand | BWS for integrated detector motorized height adjustment (vertical movement) | BWS for integrated detector motorized height adjustment (vertical movement) | Same |
| | BWS for wireless detector<br>motorized height adjustment<br>(vertical movement) | BWS for wireless detector<br>motorized or manual<br>height adjustment (vertical<br>movement) | Only motorized<br>height<br>adjustment |
| Touch<br>Interface<br>(unchanged) | Graphical user interface | Graphical user interface | Same |
| X-ray<br>generator<br>(unchanged) | 55kW, 65 kW or 80 kW | 55kW, 65 kW or 80 kW | Same |
| Integrated<br>detector<br>TRIXELL | Pixium 4343RCE<br>43 cm x 43 cm | Pixium 4343RG<br>43 cm x 43 cm<br>Pixium 4343RC<br>43 cm x 43 cm | Compared to<br>the predicate<br>Pixium<br>4343RC-the<br>active area is<br>smaller but the<br>performance<br>(e.g. DQE,<br>MTF) is similar |
| Portable<br>Wireless<br>Detector<br>(wi-D)<br>TRIXELL | Pixium 3543EZh<br>43 cm x 35 cm<br>Pixium 2430EZ<br>30 cm x 24 cm | PaxScan 4336W<br>43cm x 36 cm | Same<br>technology with<br>WIFI feature |
| Operating<br>modes<br>(unchanged) | RAD Single Exposure | RAD Single Exposure | Same |
| Imaging<br>System<br>(unchanged) | Fluorospot Compact PC<br>based,<br>high res digital | Fluorospot Compact PC<br>based,<br>high res digital | Same |
| Display 19"<br>(unchanged) | Black & White<br>or Color | Black & White<br>or Color | Same |
| DICOM 3<br>Functions<br>(unchanged) | Send, StC, Print,<br>Query/Retrieve, Get<br>Worklist, MPPS | Send, StC, Print,<br>Query/Retrieve, Get<br>Worklist, MPPS | Same |
| Radiographi<br>c<br>Grid | 92-line grid<br>(ratio 13:1)<br>85-line grid<br>(ratio 5:1) (optional) | 80-line grid (ratio10:1)<br>50-line grid (ratio10:1) | More lines,<br>different ratio |
| Accessory<br>(unchanged) | Remote Control | Remote Control | Same |
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-
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| | console | console | |
|--|---------|---------|--|
| | | | |
| | | | Fixed Subject Detector Compared to the Fixed Primary Predicate Detector | |
|------------------------------------|---------------------------------------------------------|----------------------------------------------------------|-------------------------------------------------------------------------|--|
| | | | | |
| Technical<br>Specifications | Trixell Pixium<br>4343RCE detector<br>(fixed) (subject) | Trixell Pixium<br>4343RC detector<br>(fixed) (predicate) | Comparison<br>Results | |
| Dimensions | 423.3 mm x 425.4 mm | 424.6 mm x 425.5 mm | Difference not<br>significant | |
| Resolution | 2860 x 2874 pixels | 2869 x 2874 pixels | Difference not<br>significant | |
| Pixel size | 148 um | 148 um | Same | |
| Semiconductor<br>Material | Amorphous silicon, a-<br>Si | Amorphous silicon, a-<br>Si | Same | |
| Scintillator | Cesium iodide (CsI) | Cesium iodide (CsI) | Same | |
| Acquisition depth | 16 bit | 16 bit | Same | |
| DQE (Detective<br>Duantin | DOE @ 0.05 lp/mm (2<br>μGy), 67% | DOE @ 0.05 lp/mm (2<br>uGy), 65% | Difference not<br>significant | |
| (Modulations<br>transfer function) | MTF @ 1 lp/mm, 62% | MTF @ 1 lp/mm, 63% | Difference not<br>significant | |
|
## Wireless Subject Detector Compared to the Wireless Primary Predicate Detector
| Technical<br>Specifications | Trixell Pixium 3543<br>EZh detector<br>(wireless) (subject) | Varian PaxScan<br>4336W detector<br>(wireless)<br>(predicate) | Comparison<br>Results |
|-------------------------------------------|-----------------------------------------------------------------------------------|---------------------------------------------------------------|-------------------------------|
| Dimensions | 349 mm x 425 mm | 356 mm x 427 mm | Smaller |
| Resolution | 2356 x 2872 pixels | 3032 x 2520 pixels | Difference not<br>significant |
| Pixel size | 148 139 Larger | | |
| Semiconductor<br>Material | Amorphous silicon, a-<br>Si | Amorphous silicon, a-<br>Si | Same |
| Scintillator | Cesium iodide (CsI) | Cesium iodide (CsI) | Same |
| Acquisition depth | 16 bit | 16 bit | Same |
| DQE (Detective<br>Quantum<br>Efficiency) | DQE @ 1 lp/mm (2 DQE @ 1 lp/mm (2 Difference not<br>significant | | |
| MTF<br>(Modulations<br>transfer function) | MTF @ 1 lp/mm, 61% | MTF @ 1 lp/mm, 57% | Difference not<br>significant |
## Wireless Subject Detector Compared to the Wireless Reference Predicate Detector
| Technical<br>Specifications | Trixell Pixium 3543<br>EZh detector<br>(wireless) (subject) | Trixell Pixium 3543<br>EZh detector<br>(wireless)<br>(reference predicate) | Comparison<br>Results |
|-----------------------------|-------------------------------------------------------------|----------------------------------------------------------------------------|-----------------------|
| Dimensions | 349 mm x 425 mm | 349 mm x 425 mm | Same |
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| Resolution | 2356 x 2872 pixels | 2356 x 2872 pixels | Same |
|-------------------------------------------|----------------------------|----------------------------|------|
| Pixel size | 148 μm | 148 μm | Same |
| Semiconductor<br>Material | Amorphous silicon, a-Si | Amorphous silicon, a-Si | Same |
| Scintillator | Cesium iodide (CsI) | Cesium iodide (CsI) | Same |
| Acquisition depth | 16 bit | 16 bit | Same |
| DQE (Detective<br>Quantum<br>Efficiency) | DQE @ 1 lp/mm (2 μGy), 50% | DQE @ 1 lp/mm (2 μGy), 50% | Same |
| MTF<br>(Modulations<br>transfer function) | MTF @ 1 lp/mm, 61% | MTF @ 1 lp/mm, 61% | Same |
## Wireless Subject Detector Compared to the Wireless Primary Predicate Detector
-
| Technical<br>Specifications | Trixell Pixium<br>2430EZ detector<br>(wireless) (subject) | Varian PaxScan<br>4336W detector<br>(wireless) (primary predicate) | Comparison<br>Results |
|-------------------------------------------|-----------------------------------------------------------|--------------------------------------------------------------------|-------------------------------|
| Dimensions | 228 mm x 284 mm | 356 mm x 427 mm | Smaller |
| Resolution | 1560 x 1920 pixels | 3032 x 2520 pixels | Difference not<br>significant |
| Pixel size | 148 μm | 139 μm | Larger |
| Semiconductor<br>Material | Amorphous silicon, a-<br>Si | Amorphous silicon, a-<br>Si | Same |
| Scintillator | Cesium iodide (CsI) | Cesium iodide (CsI) | Same |
| Acquisition depth | 16 bit | 16 bit | Same |
| DQE (Detective<br>Quantum<br>Efficiency) | DQE @ 1 lp/mm (2<br>μGy), 50% | DQE @ 1 lp/mm (2<br>μGy), 54% | Difference not<br>significant |
| MTF<br>(Modulations<br>transfer function) | MTF @ 1 lp/mm,61% | MTF @ 1 lp/mm,57% | Difference not<br>significant |
## Wireless Subject Detector Compared to the Wireless Reference Predicate Detector
| Technical<br>Specifications | Trixell Pixium<br>2430EZ detector<br>(wireless) (subject) | Trixell Pixium<br>2430EZ detector<br>(wireless) (reference<br>predicate) | Comparison<br>Results |
|------------------------------------------|-----------------------------------------------------------|--------------------------------------------------------------------------|-----------------------|
| Dimensions | 228 mm x 284 mm | 228 mm x 284 mm | Same |
| Resolution | 1560 x 1920 pixels | 1560 x 1920 pixels | Same |
| Pixel size | 148 µm | 148 µm | Same |
| Semiconductor<br>Material | Amorphous silicon, a-<br>Si | Amorphous silicon, a-<br>Si | Same |
| Scintillator | Cesium iodide (CsI) | Cesium iodide (CsI) | Same |
| Acquisition depth | 16 bit | 16 bit | Same |
| DQE (Detective<br>Quantum<br>Efficiency) | DQE @ 1 lp/mm (2 µGy), 50% | DQE @ 1 lp/mm (2 µGy), 50% | Same |
| MTF (Modulations<br>transfer function) | MTF @ 1 lp/mm,61% | MTF @ 1 lp/mm,61% | Same |
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## 8. Summary of Technological Characteristics of the Subject Device as Compared with the Predicate Device
The Multix Fusion Max is comparable in indications for use, design, material, functionality, technology, energy source and is substantially equivalent to the commercially available predicates. It uses the same or similar components cleared in the Multix Fusion (e.g. tube, generator, ceiling-mounted tube support, table, Bucky wall stand and imaging system) and the Ysio Max (wireless detectors).
The components of the subject device have many of the same technological characteristics as the ones from the predicate devices. There are some technological characteristics that differ slightly as shown in the comparison tables.
Testing and validation have been successfully completed and test results show that the subject device Multix Fusion Max with all of its components are comparable to the predicate devices and therefore is substantially equivalent to the predicate devices.
The modifications made to the subject device Multix Fusion Max do not affect the intended use of the device nor do they alter its fundamental scientific technology from the 510(k) cleared predicate devices.
#### 9. Nonclinical Performance Testing
Non-clinical tests were conducted for the Multix Fusion Max during product development. The modifications described in this Premarket Notification are supported with verification and validation testing.
Multix Fusion Max conforms to the following standards: IEC 60601-1:2012, ed.3.1; IEC 60601-1-2 3rd 2007; IEC 60601-1-3:2008+A1:2013; IEC 62366: 2014; ISO 14971:2007; IEC 62304 Ed. 1.1 2015; IEC 60601-2-28 Edition 2.0 (2010); IEC 60601-2-54 Edition 1.1 2015; PS 3.1 - 3.20 (2011); IEC 60601-1-6: 2013 and ISO 10993-1:2009.
Software Documentation for a Moderate Level of Concern software per FDA's Guidance Document "Guidance for the Content of Premarket Submissions for Software Contained in Medical Devices" issued on May 11, 2005 is also included as part of this submission. The performance data demonstrates continued conformance with special controls for medical devices containing software. Non-clinical tests (integration and functional) were conducted on the Multix Fusion Max during product development.
Detector integration testing consisted of functional and image quality tests. Functional tests included exposure workflow, detector sharing function and image resend functions. Image quality tests included flat field uniformity of the detector.
The Risk analysis was completed and risk control implemented to mitigate identified hazards. The testing results support that all the software specifications have met the acceptance criteria. Testing for verification and validation for the device was found acceptable to support the claims of substantial equivalence.
### 10. General Safety and Effectiveness Concerns
Instructions for use are included within the device labeling, and the information provided will enable the user to operate the device in a safe and effective manner. Several safety features including visual and audible warnings are incorporated into the system design. In addition, the
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Multix Fusion Max Radiography X-ray system is continually monitored, and if an error occurs, the system functions will be blocked and an error message will be displayed. Risk management is ensured via a hazard analysis which is used to identify potential hazards. These potential hazards are controlled via software development, verification and validation testing. To minimize electrical, mechanical, and radiation hazards, Siemens adheres to recognized and established industry practice, and all equipment is subject to final performance testing. Furthermore the operators are health care professionals familiar with and responsible for the X-ray examinations to be performed.
#### 11. Conclusion as to Substantial Equivalence
The Multix Fusion Max has the same indications for use as the predicate Multix Fusion. The operating environment and mechanical design are similar. It is Siemens opinion, that the Multix Fusion Max is substantially equivalent to the Multix Fusion, cleared 12/18/2014 in K142049.
The predicate device was cleared based on non-clinical supportive information. Therefore, the subject device non-clinical data supports the safety of software with verification and validation testing. Verification and validation testing demonstrates that the Multix Fusion Max should perform as intended. The non-clinical test data demonstrate that the Multix Fusion Max device performance is comparable to the predicate device that is currently marketed for the same intended use.
In summary, Siemens is of the opinion that the Multix Fusion Max does not introduce any new potential safety risk and is substantially equivalent to and performs as well as the predicate device.
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Output name, acceptance criteria, observed values, development dataset description, and test dataset description. It's the same format we use for regulatory strategy output and Fast 510(k) input, and the fastest high-level fingerprint of an AI device. AI-generated but reliable in practice.
3. Judging fuzzy relevance
Fuzzy results trail off in relevance as you scroll. Use three signals to decide how far down to go: the fuzzy badge explanations, the intended use column, and whether your target output (e.g., Cobb angle) still appears in the AI Performance sub-table. Once it stops appearing, you're past the relevant zone. A top hit with a low score (~0.4) and a stretched explanation is a hint the closest predicates are far away — the project may be headed for De Novo. Note the fuzzy search is a pattern match: it doesn't handle negation ("not") well, and hardware devices can appear — filter by SaMD/AI ML to cut them.
How do you judge how far down fuzzy search results to go?
Use the relevancy signals: the fuzzy badge explanations, the intended use column, and whether the target output (e.g., Cobb angle) still appears in the AI Performance sub-table. Once it stops appearing, results are trailing off in relevancy.
4. Device detail page: chat and citations
Click a device name to open its detail page: device facts on the left, a chat window on the right. Ask something like "Describe the training data". The answer carries little citation bubbles — click one to jump to the highlighted passage in the source PDF, so you can verify every AI answer against the document. There's also a Download PDF button for sharing.
How do you verify an AI chat answer on the device detail page?
Click the citation bubbles to jump to the relevant highlight in the source document.
Reading rule for every project: how many summaries do you read in full?
At least the three most relevant 510(k) or De Novo summaries, in full. After that, use targeted chat questions to confirm your memory quickly. The tool supports this professional habit — it doesn't replace it.
5. Side-by-side comparison
Select multiple rows in the results table (aim for under ~10), then open the PDF Viewer tab. Ask one question — it goes to all selected devices in parallel, each with citations. This is the fastest way to compare and contrast devices: training data, PCCP scope, how they handled adding new scanners, and so on.
What does the side-by-side PDF viewer mode do?
Select multiple devices, open the PDF viewer tab, and ask one question (e.g., "Describe the training data"). It queries all selected devices simultaneously with citations, so you can compare and contrast quickly.
6. Collections
With rows selected, go to the Collections tab and create a labeled collection (e.g., "Cobb Angle Project"). Reload that selection any time — before a client call, pull up the collection and ask questions across all of its devices at once.
How do you save a set of selected devices for later use?
Select the rows, go to the Collections tab, and create a labeled collection (e.g., "Cobb Angle Project"). You can reload the selection anytime and carry it into the PDF viewer and other tabs that support selections.
7. Product codes and the regulations tree
Click a product code in the results to jump to it in the regulations tree — identification text, sibling product codes, and devices you can open in a PDF viewer on the right. Click a regulation number to see its identification, special controls, and related product codes. You can also search by product code or regulation number at the top of the tree. Always read the special controls if any exist for your device — it broadens your search and sharpens pre-kickoff research.
What can you do from the regulations tree view?
Browse product codes and regulation numbers, read the identification text and special controls, browse sibling product codes, open device PDFs on the right, and search by product code or regulation number at the top of the tree.
8. Chart view
Click Show Chart and segment by regulation number (or product code) to see which regulations dominate your result set. Clicking a regulation takes you into the regulations tree. Great for spotting that most matches are, say, hardware laparoscopic devices — a cue to go back and filter.
How do you see which regulations dominate a search result set?
Click "Show Chart" and segment by Regulation Number. Clicking a regulation takes you to the regulations tree.
9. The predicate graph
Open the Predicates tab for a family-tree view of predicate relationships. Click a node to trace its parents and children; selections from search carry over pre-selected. Commonly predicated devices are worth reading — a lot of people predicated them for a reason. The visual lineage is also handy on client calls, e.g. to show how a predicate family evolved and justify why your predicate still holds.
In the predicate graph, why are commonly predicated devices worth reading?
A lot of people predicated them for a reason. Clicking a node traces parents and children, and selections from search carry over pre-selected.
10. Embeddings: the galaxy map
The Embeddings tab plots every matching document in a 2-D "galaxy map" where semantically similar devices cluster together. Hover or click clusters to explore, and let AI label the clusters for you. Embeddings beat product codes for grouping: two devices can carry different product codes (LLZ vs. QIH) yet do the same thing — the embedding captures the meaning of the intended use and device story. This is also exactly how retrieval-augmented generation (RAG) works under the hood, and it makes a great visual on client calls.
Try it yourself
Head to the search page and work through a few of these AI/ML fuzzy searches to build intuition: perivascular fat on CT · aortic valve calcification opportunistic screening on noncontrast CT · breast cancer prediction on digital pathology slides · autism detection · gestational age prediction · a hearing aid that can also detect a pulse · foundation model based analysis of ECG · large language models · penetration test. Watch how the relevance scores, intended use, and AI Performance tables tell you when results stop being meaningful.