(56 days)
The GM85 Digital Mobile X-ray imaging System is intended for use in generating radiographic images of human anatomy by a qualified/trained doctor or technician. This device is not intended for mammographic applications.
The GM85 Digital Mobile X-ray Imaging System is used to capture images by transmitting X-ray to a patient's body. The X-ray passing through a patient's body is sent to the detector and then converted into electrical signals. These signals go through the process of amplification and digital data conversion in the signal process on the S-Station, which is the Operation Software (OS) of Samsung Digital Diagnostic X-ray System, and save in DICOM file, a standard for medical imaging. The captured images are tuned up by an Image Post-processing Engine (IPE) which is exclusively installed in S-Station, and send to the Picture Archiving & Communication System (PACS) sever for reading images.
The provided text describes a 510(k) premarket notification for the GM85 Digital Mobile X-ray Imaging System. The primary purpose of this notification is to add a new detector configuration to an already cleared device (K220175). As such, the study described focuses on demonstrating the substantial equivalence of the new detector and its integration, rather than establishing primary performance metrics from scratch for a completely new device.
Here's a breakdown of the acceptance criteria and the study conducted based on the provided information:
1. Table of Acceptance Criteria and Reported Device Performance
The acceptance criteria are implicitly tied to demonstrating equivalence to the predicate device's existing performance, particularly for the new detector. The non-clinical and clinical (phantom image evaluation) data serve to show that the new detector maintains similar performance characteristics.
| Acceptance Criteria Category | Specific Metric (Implicit/Explicit) | Predicate Device Performance | Proposed Device (New Detector) Performance | Discussion/Acceptance |
|---|---|---|---|---|
| Durability | N/A (General statement) | Assumed to be met | Retains same durability | Met |
| Functionality | N/A (General statement) | Assumed to be met | Retains same functionality | Met |
| Operation | N/A (General statement) | Assumed to be met | Retains same operation | Met |
| Detector Type | Detector Type | Csl, Indirect | Csl, Indirect | Same (Met) |
| Detector Area | Detector Area | 14"X17" (345mmX425mm) | 14"X17" (345mmX425mm) | Same (Met) |
| Number of Pixels | Number of Pixels | 2466X3040 | 2466X3040 | Same (Met) |
| Pixel Pitch | Pixel Pitch | 140 um | 140 um | Same (Met) |
| High Contrast Limiting Resolution | High Contrast Limiting Resolution | 3.57 LP/mm | 3.57 LP/mm | Same (Met) |
| Communication | Communication | Wired / Wireless | Wired / Wireless | Same (Met) |
| Dust/Water-resistance | Dust/Water-resistance Rating | IP54 | IP54 | Same (Met) |
| Max. Load Capacity | Max. Load Capacity | 400 kg/200 kg | 400 kg/200 kg | Same (Met) |
| DQE | DQE (0lp/mm, Typical) | 76% | 76% | Same (Met) |
| MTF | MTF (0.5lp/mm, Typical) | 86% | 86% | Same (Met) |
| Weight | Weight (w/o Battery Set) | Approx. 2.76 kg | Approx. 2 kg | Difference acknowledged as not impacting safety/effectiveness |
| Image Quality Evaluation | Average Score of Image Quality | Baseline (predicate) | Equivalent to predicate devices | Found to be equivalent (Met) |
2. Sample Size Used for the Test Set and Data Provenance
- Sample Size for Test Set: The document mentions "Anthropomorphic phantom images were provided." It does not specify the exact number of phantom images or the number of distinct phantom cases used in the evaluation.
- Data Provenance: The nature of phantom images means the data is synthetic/simulated clinical data (using phantoms to mimic human anatomy) rather than human patient data. The country of origin for the data is not explicitly stated, but it would have been generated as part of the manufacturer's internal testing as advised by FDA guidance. The study is prospective in the sense that the evaluations were specifically conducted for this submission.
3. Number of Experts Used to Establish the Ground Truth for the Test Set and Qualifications of Those Experts
- Number of Experts: The document states that phantom images "were evaluated by professional radiologists." It does not specify the exact number of radiologists involved.
- Qualifications of Experts: They are described as "professional radiologists." Specific lengths of experience or subspecialties are not provided.
4. Adjudication Method for the Test Set
- The document implies a consensus or comparison approach: "They were evaluated by professional radiologists and found to be equivalent to the predicate devices. There is no significant difference in the average score of image quality evaluation between the proposed device and the predicate device." However, a specific adjudication method (e.g., 2+1, 3+1 decision rule) is not explicitly stated. It seems to be a comparative evaluation aiming for no significant performance degradation.
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
- No MRMC comparative effectiveness study was done. This submission focuses on hardware modification (new detector) to an existing device, not an AI-assisted diagnostic tool. Therefore, the concept of improving human readers with AI assistance is not applicable here.
6. If a Standalone (i.e., algorithm only without human-in-the-loop performance) was done
- This is not an AI/algorithm-only device. The GM85 is an X-ray imaging system. The "standalone" performance here refers to the device's ability to produce images with acceptable quality on its own. Non-clinical data (MTF, DQE measurements) and phantom images contribute to demonstrating this standalone image performance. The evaluation by radiologists of the phantom images is more about confirming the quality of the "output" of the device in a clinical context, rather than evaluating an algorithm's diagnostic capability.
7. The Type of Ground Truth Used
- For the phantom image evaluation, the "ground truth" is established by the known characteristics of the anthropomorphic phantoms. The purpose of the radiologists' evaluation is to determine if the images produced by the new detector (compared to the predicate's detector) adequately represent these known phantom structures and maintain diagnostic quality. In essence, the ground truth is the known physical properties of the phantom, and the evaluation confirms the device's ability to render these properties accurately in images.
8. The Sample Size for the Training Set
- This submission describes a modification to an existing medical device's hardware (a detector), not an AI or machine learning algorithm. Therefore, there is no "training set" in the context of AI model development that would typically be described here. The device itself is "trained" or designed through engineering and validated through performance testing.
9. How the Ground Truth for the Training Set Was Established
- As there is no AI training set as commonly understood in this context, the concept of establishing ground truth for a training set does not apply. The device's design and engineering would be based on established physics principles of X-ray imaging and medical imaging standards.
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September 29, 2022
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 Department of Health & Human Services logo. To the right of that is the FDA logo, which consists of the letters "FDA" in a blue square, followed by the words "U.S. FOOD & DRUG" in blue, with the word "ADMINISTRATION" underneath in a smaller font.
Samsung Electronics Co., Ltd. % Jaesang Noh Senior Professional, Regulatory Affairs 129, Samsung-Ro, Yeongtong-Gu Suwon-Si, Gyeonggi-Do 16677 REPUBLIC OF KOREA
Re: K222353
Trade/Device Name: GM85 Regulation Number: 21 CFR 892.1720 Regulation Name: Mobile x-ray system Regulatory Class: Class II Product Code: IZL Dated: July 29, 2022 Received: August 4, 2022
Dear Jaesang Noh:
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. Although this letter refers to your product as a device, please be aware that some cleared products may instead be combination products. The 510(k) Premarket Notification Database located at https://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfpmn/pmn.cfm identifies combination product submissions. The general controls provisions of the Act include requirements for annual registration, listing of devices, good manufacturing practice, labeling, and prohibitions against misbranding and adulteration. Please note: CDRH does not evaluate information related to contract liability warranties. We remind you, however, that device labeling must be truthful and not misleading.
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
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801); medical device reporting of medical device-related adverse events) (21 CFR 803) for devices or postmarketing safety reporting (21 CFR 4, Subpart B) for combination products (see https://www.fda.gov/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 4, Subpart A) for combination products; and, if applicable, the electronic product radiation control provisions (Sections 531-542 of the Act); 21 CFR 1000-1050.
Also, please note the regulation entitled, "Misbranding by reference to premarket notification" (21 CFR Part 807.97). For questions regarding the reporting of adverse events under the MDR regulation (21 CFR Part 803), please go to 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,
Laurel Burk, Ph.D. Assistant Director Diagnostic X-Ray Systems Team DHT8B: Division of Imaging Devices and Electronic Products OHT8: Office of Radiological Health Office of Product Evaluation and Quality Center for Devices and Radiological Health
Enclosure
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Indications for Use
510(k) Number (if known) K222353
Device Name GM85
Indications for Use (Describe)
The GM85 Digital Mobile X-ray imaging System is intended for use in generating radiographic images of human anatomy by a qualified/trained doctor or technician. This device is not intended for mammographic applications.
| 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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510(k) Premarket Notification - Traditional
Section 5: 510(k) Summary
This summary of 510(k) safety and effectiveness information is being submitted accordance with requirements of 21 CFR 807.92
-
- Date: July 29, 2022
2. Submitter
- Company Name: SAMSUNG ELECTRONICS Co., Ltd. A.
- Address: 129, Samsung-ro, Yeongtong-gu, Suwon-si, Gyeonggi-do, 16677, B. Republic of Korea
3. Primary Contact Person
- A. Name: JAESANG NOH
- Title: Regulatory Affairs, Senior Professional B.
- Phone Number: +82-2-2193-2444 ﻥ
- D. FAX Number: +82-2-2194-0272
- E-Mail: jaesang.noh@samsung.com E.
4. Secondary Contact Person
- Name: Ninad Gujar A.
- Title: Vice President, Regulatory Affairs & Quality Control B.
- C. Phone Number: 978-564-8503
- D. FAX Number: 978-560-0602
- ய் E-Mail: ngujar@neurologica.com
5. Proposed Device
- Trade Name: GM85 A.
- B. Device Name: GM85
- Common Name: Digital Diagnostic Mobile X-ray System ﻥ
- D. Classification Name: Mobile X-ray System
- E. Product Code: IZL
- ட் Regulation: 21 CFR 892.1720
6. Predicate Devices
| Predicate Device | |
|---|---|
| Device Name | GM85 |
| Classification Name | Mobile X-ray system. |
| Product Code | IZL |
| Regulation | 21 CFR 892.1720 |
| 510(k)# | K220175 |
| 510(K) Decision Date | April 21, 2022 |
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510(k) Premarket Notification - Traditional
7. Device Description
The GM85 Digital Mobile X-ray Imaging System is used to capture images by transmitting X-ray to a patient's body. The X-ray passing through a patient's body is sent to the detector and then converted into electrical signals. These signals go through the process of amplification and digital data conversion in the signal process on the S-Station, which is the Operation Software (OS) of Samsung Digital Diagnostic X-ray System, and save in DICOM file, a standard for medical imaging. The captured images are tuned up by an Image Post-processing Engine (IPE) which is exclusively installed in S-Station, and send to the Picture Archiving & Communication System (PACS) sever for reading images.
The GM85 Digital Mobile X-ray imaging System was previously cleared with K220175, and through this premarket notification, we would like to add more configurations in the previously cleared GM85 as a detector is newly added.
The new detector added in the proposed device is designed to retain the same durability, functionality and operation as the detector of the predicate device and reduce weight by changing a substrate material and appearance. The new detector and predicate device's detector are both an x-ray conversion device using an amorphous silicon flat panel and absorb incident x-rays, converts it to a digital signal, and then transmits it to the Samsung Digital X-ray System like that of the predicate device.
8. Indications for Use
The GM85 Digital Mobile X-ray Imaging System is intended for use in generating radiographic images of human anatomy by a qualified/trained doctor or technician. This device is not intended for mammographic applications.
9. Summary of Technological characteristic of the proposed device compared with the predicate devices
The proposed device, GM85, has the same technological characteristics and hardware as its original predicate device, GM85 (K220175). The only change is that a configurable detector is added. It does not have significant changes in energy source or technological characteristics compared to the predicate device.
Comparisons of technological characteristics were executed and demonstrate the substantial equivalence to the predicates.
A. Comparing with Predicate Device
The proposed device is shown as its parts are identical or equivalent with predicate device while some differences are made as below, which do not show significant difference in safety and effectiveness.
| Specification | Predicate Device | Proposed Device | Discussion |
|---|---|---|---|
| Device Name | GM85 | GM85 | - |
| Manufacturer | SAMSUNG ELECTRONICS | SAMSUNG ELECTRONICS | - |
| 510(k) Number | K220175 | K222353 | - |
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SAMSUNG
510(k) Premarket Notification - Traditional
| Appearances | Image: C-Type[C-Type*]*Collapsiblecolumn typewith anautomaticcollimator(C-Type) | Image: F-Type[F-Type**]**Fixedcolumn typewith a manualcollimator(F-Type) | Image: Fit-Type[Fit-Type***]***Collapsiblecolumn type amanualcollimator(Fit-Type) | Image: C-Type[C-Type*]*Collapsiblecolumn typewith anautomaticcollimator(C-Type) | Image: F-Type[F-Type**]**Fixedcolumn typewith amanualcollimator(F-Type) | Image: Fit-Type[Fit-Type***]***Collapsible columntype amanualcollimator(Fit-Type) | Same |
|---|---|---|---|---|---|---|---|
| Indications forUse | The GM85 Digital Mobile X-rayImaging System is intended for usein generating radiographic imagesof human anatomy by aqualified/trained doctor ortechnician. This device is notintended for mammographicapplications. | The GM85 Digital Mobile X-rayImaging System is intended foruse in generating radiographicimages of human anatomy by aqualified/trained doctor ortechnician. This device is notintended for mammographicapplications. | Same |
| Manufacturer Contents | GM85(K220175) | GM85(K222353) | Discussion |
|---|---|---|---|
| (1) Detector | |||
| Name | S4335-WS4343-WS3025-WS4335-AWS4343-AWS4335-AWMS4343-AWMS3025-AWS3025-AWM | S4335-WS4343-WS3025-WS4335-AWS4343-AWS4335-AWMS4343-AWMS3025-AWS3025-AWM | Difference(1) |
| S4335-AW | F4335-AWF4335-AW | ||
| Detector Type | Csl | Csl | Same |
| Indirect | Indirect | Same | |
| Detector Area | 14"X17"(345mmX425mm) | 14"X17"(345mmX425mm) | Same |
| Number of pixels | 2466X3040 | 2466X3040 | Same |
| Pixel Pitch(um) | 140 | 140 | Same |
| High Contrast LimitingResolution (LP/mm) | 3.57 | 3.57 | Same |
| Communication | Wired / Wireless | Wired / Wireless | Same |
| Dust/Water-resistance | IP54 | IP54 | Same |
| Max.load capacity(uniform load / local load,40 mm in diameter disk atthe center) | 400 kg/200 kg | 400 kg/200 kg | Same |
| DQE(Detective QuantumEfficiency) | 76%(0lp/mm, Typical) | 76%(0lp/mm, Typical) | Same |
| MTF(Modulation TransferFunction) | 86%(0.5lp/mm, Typical) | 86%(0.5lp/mm, Typical) | Same |
| Weight | Approx. 2.76 kg | Approx. 2 kg | Difference(1)-1 |
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SAMSUNG
510(k) Premarket Notification - Traditional
| Manufacturer Contents | GM85(K220175) | GM85(K222353) | Discussion |
|---|---|---|---|
| (1) Detector | |||
| (w/o Battery Set) |
| No | Differences | Explanation |
|---|---|---|
| (1) | Detectors | A new detector (F4335-AW) is added to the GM85 device. Thischange does not contribute any adverse impact to the device'ssafety and effectiveness. |
| (1)-1 | Weight | The new detector which is added to the GM85 device is lighterthan that of the predicate device because a non-glass substrate,instead of a glass substrate used in the detector of the predicatedevice, is utilized and the non-metal for the front and rear cover ofthe new detector is used. These changes do not contribute anyadverse impact to the device's safety and diagnosticeffectiveness. |
B. Safety. EMC and Performance Data
Electrical, mechanical, environmental safety and performance testing according to standard ES 60601-1, IEC 60601-1-2, IEC 60601-1-3, IEC 60601-2-28, IEC 60601-2-54, ISO14971, 21CFR1020.30 and 21CFR1020.31 were performed, and EMC testing was conducted in accordance with standard IEC 60601-1-2. Wireless function was tested and verified followed by guidance, Radio frequency Wireless Technology in Medical Devices. All test results were satisfying the standards.
C. Non-clinical data
Non-clinical data was provided in conformance to the FDA "Guidance for the Submission of 510(k)'s for Solid-State X-ray Imaging Devices", which includes MTF and DQE measurements as tested by IEC 62220-1.
The proposed device has a new detector that has equivalent image characteristics as the existing ones. Specific description is added to make it clear with the non-clinical data and phantom image evaluation report. And this detector is evaluated by Software System Test Case for verification and validation.
D. Clinical data
In clinical data, phantom image evaluation of the new detector was performed in accordance with FDA guidance for the submission of 510(k)'s for Solid State X-ray Imaging Devices. Anthropomorphic phantom images were provided; these images were not necessary to establish substantial equivalence based on the modifications to the device (note X-ray flat-panel detector similar to the predicate detector) but they provide further evidence in addition to the performance data to show that the complete system works as intended. They were evaluated by professional radiologists and found to be equivalent to the predicate devices. There is no significant difference in the average score of image quality evaluation between the proposed device and the predicate
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510(k) Premarket Notification - Traditional
device. Therefore, this change does not affect either the safety or the effectiveness, compared to the predicate device.
- E. Summary of the Standards and Guidance Compliance
- AAMI ANSI ES60601-1 2005/(R)2012 and A1:2012, C1:2009/(R)2012 and 1. A2:2010/(R)2012 Medical Electrical Equipment – Part 1: General requirements for basic safety and essential performance
- IEC 60601-1-2 Edition 4 Medical Electrical Equipment Part 1-2: General 2. Requirements for Basic Safety and Essential Performance - Collateral Standard: Electromagnetic compatibility - Requirements and Tests
-
- IEC 60601-1-3 Edition 2.1 Medical Electrical Equipment – Part 1-3: General Requirements for Basic Safety and Essential Performance - Collateral Standard: Radiation protection in Diagnostic X-ray Equipment
- IEC 60601-2-28 Edition 3 Medical Electrical Equipment Part 2-28: Particular 4. Requirements for the Basic Safety and Essential Performance of X-ray Tube Assemblies for Medical Diagnosis
-
- IEC 60601-2-54 Edition 1.2 Medical Electrical Equipment – Part 2-54: particular Requirements for the Basic Safety and Essential Performance of X-ray Equipment for Radiography and Radioscopy
-
- IEC 62220-1-1 Edition 1.0 Medical electrical Equipment - Characteristics of digital X-ray imaging devices Part 1-1: Determination of the detective quantum efficiency Detectors used in radiographic imaging
- Content of Premarket Submissions for Management of Cybersecurity in Medical 7. Devices Guidance for Industry and Food and Drug Administration Staff issued on October 2, 2014
- Guidance for Industry and FDA Staff Guidance for the Content of Premarket 8. Submissions for Software Contained in Medical Devices issued on May 11, 2015
-
- Guidance for the Submission for 510(k) for Solid State X-ray Imaging Devices Guidance for Industry and Food and Drug Administration Staff issued on September 1, 2016
-
- Pediatric Information for X-ray Imaging Device Premarket Notifications Guidance for Industry and Food and Drug Administration Staff issued on November 28, 2017
F. Conclusions
The non-clinical and phantom evaluation data demonstrate that the proposed device is as safe, as effective, and performs as well as the legally marketed predicate devices.
§ 892.1720 Mobile x-ray system.
(a)
Identification. A mobile x-ray system is a transportable device system intended to be used to generate and control x-ray for diagnostic procedures. This generic type of device may include signal analysis and display equipment, patient and equipment supports, component parts, and accessories.(b)
Classification. Class II.