8ch Flex Suite
Device Facts
| Record ID | K200836 |
|---|---|
| Device Name | 8ch Flex Suite |
| Applicant | Shenzhen RF Tech Co., Ltd. |
| Product Code | MOS · Radiology |
| Decision Date | Jul 22, 2020 |
| Decision | SESE |
| Submission Type | Traditional |
| Regulation | 21 CFR 892.1000 |
| Device Class | Class 2 |
Indications for Use
The 1.5T 8ch Flex Suite manufactured by Shenzhen RF Tech Co., Ltd. is receive-only coil and is designed for use as general-purpose coil. The 1.5T 8ch Flex Suite is designed to be use with GE 1.5T MRI systems to produce diagnostic images of upper and lower extremities, head, spine and cardiac that can be interpreted by a trained physician.
Device Story
The 1.5T 8ch Flex Suite is a receive-only phased array RF coil designed for use with GE 1.5T MRI systems. It consists of three flexible, lightweight coil arrays (10-F25061, 10-F25062, 10-F25063) that wrap around or lie flat against patient anatomy to accommodate various sizes and shapes. The device captures RF signals corresponding to proton precession at 63.86 MHz in a 1.5T magnetic field. It utilizes integrated preamplifiers and an 8-channel phased array technique to combine signals for image reconstruction. Operated by MRI technicians in clinical settings, the device provides raw signal data to the host MRI system, which processes the data into diagnostic images. These images are reviewed by physicians to aid in clinical decision-making. The flexible design allows for improved patient positioning and comfort during scanning.
Clinical Evidence
Bench testing only. Performance evaluated via NEMA MS-1-2008 (SNR) and NEMA MS-3-2008 (Image Uniformity). Safety and EMC testing conducted per IEC 60601-1, IEC 60601-1-2, and IEC 60601-2-33. Biocompatibility testing performed per ISO 10993-5 and ISO 10993-10. Clinical image evaluation performed by connecting the device to a compatible MRI system to confirm diagnostic image quality.
Technological Characteristics
Receive-only phased array RF coil; 8-channel; 1.5T field strength; 63.86 MHz proton frequency; integrated preamplifiers; flexible form factor; +10V power source. Biocompatibility per ISO 10993-5/10. Electrical safety per IEC 60601-1, IEC 60601-1-2, and IEC 60601-2-33. Performance standards: NEMA MS-1, NEMA MS-3.
Indications for Use
Indicated for diagnostic imaging of upper and lower extremities, head, spine, and cardiac anatomy in adult populations using GE 1.5T MRI systems.
Regulatory Classification
Identification
A magnetic resonance diagnostic device is intended for general diagnostic use to present images which reflect the spatial distribution and/or magnetic resonance spectra which reflect frequency and distribution of nuclei exhibiting nuclear magnetic resonance. Other physical parameters derived from the images and/or spectra may also be produced. The device includes hydrogen-1 (proton) imaging, sodium-23 imaging, hydrogen-1 spectroscopy, phosphorus-31 spectroscopy, and chemical shift imaging (preserving simultaneous frequency and spatial information).
Special Controls
*Classification.* Class II (special controls). A magnetic resonance imaging disposable kit intended for use with a magnetic resonance diagnostic device 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
- 8ch Flex Suite (K172222)
Submission Summary (Full Text)
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July 22, 2020
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Shenzhen RF Tech Co., Ltd. % Mr. Gary Wang Q&R Director 2-F, Bld4, Juhui Industrial Park, Tianliao, Guangming Shenzhen, Guangdong 518132 CHINA
Re: K200836
Trade/Device Name: 8ch Flex Suite Regulation Number: 21 CFR 892.1000 Regulation Name: Magnetic resonance diagnostic device Regulatory Class: Class II Product Code: MOS Dated: June 18, 2020 Received: June 22, 2020
Dear Mr. Wang:
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 801); medical device reporting of medical device-related adverse events) (21 CFR 803) for
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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.
For
Thalia T. Mills, Ph.D. Director Division of Radiological Health OHT7: Office of In Vitro Diagnostics and 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) K200836
Device Name 8ch Flex Suite
#### Indications for Use (Describe)
The 1.5T 8ch Flex Suite manufactured by Shenzhen RF Tech Co.,Ltd is receive-only coil and is designed for use as general purpose coil. The 1.5T 8ch Flex Suite is designed to be use with GE 1.5T MRI systems to produce diagnostic images of upper and lower extremities, head, spine and cardiac that can be interpreted by a trained physician.
| Type of Use (Select one or both, as applicable) | <span> <div style="display:inline-block;"> <div style="display:inline-block;"> <div style="display:inline-block;"> <div style="display:inline-block;"> <div style="display:inline-block;"> <div style="display:inline-block;"> <div style="display:inline-block;"> <div style="display:inline-block;"> <div style="display:inline-block;"> <div style="display:inline-block;"> <div style="display:inline-block;"> <div style="display:inline-block;"> <div style="display:inline-block;"> <div style="display:inline-block;"> Prescription Use (Part 21 CFR 801 Subpart D) </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </span> <span> Over-The-Counter Use (21 CFR 801 Subpart C) </span> |
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# 510(k) Summary
In accordance with 21 CFR 807.92 the following summary of information is provided:
| I. Applicant/Manufacturer | Shenzhen RF Tech Co., Ltd.<br>2-F,BLD4 Juhui Industrial Park,<br>Tianliao,Guangming,Shenzhen,<br>P.R.China 518132<br>Phone: (+86) 755-2664 1989-113<br>Fax: (+86)755-2664 2989 |
|----------------------------------------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| Submitter/Correspondent | Shenzhen RF Tech Co., Ltd.<br>2-F,BLD4 Juhui Industrial Park,<br>Tianliao,Guangming,Shenzhen,<br>P.R.China 518132<br>Phone: (+86) 755-2664 1989-113<br>Fax: (+86)755-2664 2989 |
| Contact Person: | Mr. Gary Wang<br>Q&R Director<br>Shenzhen RF Tech Co., Ltd.<br>Email: gary.wang@rft.cn |
| II. Name of Device<br>Common Name of Device: | 8ch Flex Suite |
| Common/Usual Name: | Coil, Magnetic Resonance, Specialty |
| Classification panel: | Radiology |
| Classification Names: | Magnetic Resonance Diagnostic Device |
| Regulation Number: | 21 CFR 892.1000 |
| Regulation Class: | II |
| Product Code: | MOS |
| Type of 510(k) submission: | Traditional 510(k) |
| III. Device Information<br>Product Number: | Device Trade Name |
| 10-F25061 | 8ch Flex 70 Array |
| 10-F25062 | 8ch Flex 50 Array |
| 10-F25063 | 8ch Flex 40 Array |
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#### V. Device Description
The 1.5T 8ch Flex Suite is receive-only phased array coil for imaging the upper and lower extremities, head and spine in adult population. The 1.5T 8ch Flex Suite consists of three flexible and lightweight coil of different size that can be wrapped or orientated flat, in order to accommodate various anatomic shapes and sizes.
The 1.5T 8ch Flex Suite is tuned to receive RF frequency corresponding to the proton precession in a 1.5 Tesla magnetic field, which is governed by the Larmor equation.
Image /page/4/Picture/3 description: The image shows three different versions of what appears to be a white, flexible keyboard-like device with a cable and connector attached. The text labels below each device, "10-F25061", "10-F25062", and "10-F25063", likely represent different model or part numbers. Each device has a similar rectangular shape with segmented sections, resembling keys or pressure-sensitive areas. The cable and connector suggest that the device is electronic and requires a wired connection.
### VI. Intended Use
The 1.5T 8ch Flex Suite manufactured by Shenzhen RF Tech Co., Ltd. is receive-only coil and is designed for use as general-purpose coil. The 1.5T 8ch Flex Suite is designed to be use with GE 1.5T MRI systems to produce diagnostic images of upper and lower extremities, head, spine and cardiac that can be interpreted by a trained physician.
#### VII. Comparison of Technological Characteristics with the Predicated Device
| Specification | Predicate Device | Proposed | Discussion<br>Difference |
|-----------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------------------------|
| K number | K172222 | | |
| Device name | 8ch Flex Suite | 8ch Flex Suite | |
| Manufacturer | Shenzhen RF Tech Co.,Ltd | Shenzhen RF Tech Co.,Ltd | |
| Intended Use | The 1.5T 8ch Flex Suite manufactured by Shenzhen<br>RF Tech Co.,Ltd is receive-only coil and is designed<br>for use as general purpose coil. The 1.5T 8ch Flex<br>Suite is designed to be use with GE 1.5T MRI systems<br>to produce diagnostic images of upper and lower<br>extremities, head and spine that can be interpreted by<br>a trained physician. | The 1.5T 8ch Flex Suite manufactured by Shenzhen<br>RF Tech Co.,Ltd is receive-only coil and is designed<br>for use as general purpose coil. The 1.5T 8ch Flex<br>Suite is designed to be use with GE 1.5T MRI systems<br>to produce diagnostic images of upper and lower<br>extremities, head, spine and cardiac that can be<br>interpreted by a trained physician. | Similar |
| Anatomical site | The upper and lower extremities, head and spine in<br>adult populations that can be interpreted by a trained<br>physician. | The upper and lower extremities, head, spine and<br>cardiac in adult populations that can be interpreted by<br>a trained physician. | Similar |
| Coil type | RF coil (receive only) | RF coil (receive only) | Same |
| Channel | 8 CH | 8 CH | Same |
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| Field strength | 1.5 T | 1.5 T | Same |
|--------------------------|---------------------|---------------------|------|
| RF power | 16kw | 16kw | Same |
| amplitude | B1 max =25UT | B1 max =25UT | Same |
| rise time | 330usec | 330usec | Same |
| slew rate | 100 T/m/s | 100 T/m/s | Same |
| shielding | 80dB | 80dB | Same |
| cooling | 12kw(water cooling) | 12kw(water cooling) | Same |
| preamplifier noise | 0.5dB | 0.5dB | Same |
| Storage<br>temperature | -30°C to +55°C | -30°C to +55°C | Same |
| Storage humidity | 5% to 95% | 5% to 95% | Same |
| Operation<br>temperature | 15° C to 21°C | 15° C to 21°C | Same |
| Operating<br>humidity | 30% to 75% | 30% to 75% | Same |
| Power source | +10V | +10V | Same |
|----------------------------------------------------------------------|---------------------------------------------------------------------------------------------------------------|---------------------------------------------------------------------------------------------------------------|------|
| Biocompatibility | Comply with ISO 10993-5 and ISO 10993-10 | Comply with ISO 10993-5 and ISO 10993-10 | Same |
| Electrical Safety | IEC 60601-1<br>IEC 60601-1-2 | IEC 60601-1<br>IEC 60601-1-2 | Same |
| Other: Device<br>Specific Guidance<br>Requirements for<br>Comparison | Guidance for the Submission of Premarket<br>Notifications for Magnetic Resonance Diagnostic<br>Devices; Final | Guidance for the Submission of Premarket<br>Notifications for Magnetic Resonance Diagnostic<br>Devices; Final | Same |
The proposed 8ch Flex Suite can be wrapped around the anatomy of interest and have same design and same technology character with same manufacturing process and material with predicate device. The proposed 8ch Flex Suite is general purpose receive only coil with 8 elements and intergraded preamplifiers. It is same with predicate device
The proposed 8ch Flex Suite is based on phased array technique for combining the images from 8 different channels. The 1.5T 8ch Flex Suite is tuned to the proton frequency of 63.86MHz. It is same with predicate device
The proposed 8ch Flex Suite has similar intended purpose with predicate device.
The difference between proposed 8ch Flex Suite and predicate device is the plug type. The proposed 8ch Flex Suite is P port and predicate device is A port, which is connected to MRI system with different port. The proposed 8ch Flex Suite extended its image scope by adding cardiac image compared to predicate device.
#### VIII Standard List for Performance Tests
All verification tests have been performed according to below standard, the testing results are passed 1.IEC 60601-1:2005 (Third Edition) + CORR. 1:2006 + CORR. 2:2007 +
A1:2012, Medical electrical equipment - Part 1: General requirements for basic safety and essential 2.IEC 60601-1-2:2014 Medical electrical equipment - Part 1-2: General requirements for safety and essential performance - Collateral standard: Electromagnetic compatibility - Requirements and tests; 3.ISO 10993-5:2009: Biological evaluation of medical devices. Part 5-Tests for in vitro cytotoxicity. 4.ISO 10993-10:2010 Biological evaluation of medical devices, Part 10-Tests for irritation and skin
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sensitization.
5.NEMA MS-1-2008 Determination of Signal-to-Noise Ratio (SNR) in Diagnostic Magnetic Resonance Imaging.
6.NEMA MS 3-2008 Determination of Image Uniformity in Diagnostic Resonance Images.
7.IEC60601-2-33:2010+A1:2013+A2:2015 Medical equipment - Part 2-33: Particular requirements for the basic safety and essential performance of magnetic resonance equipment for medical diagnosis.
# IX. Performance Data
The following performance data were provided in support of the substantial equivalence determination.
The biocompatibility evaluation was conducted in accordance with ISO International Standard and included cytotoxicity test, sensitization test and irritation test to raw material which will contact with surface skin.
The test for safety and electromagnetic compatibility (EMC), basic safety and performance test were conducted in accordance with IEC and NEMA Standard.
Shelf Life testing and mechanical reliability testing were conducted.
Clinical images evaluation testing for the proposed device was evaluated by connected to compatible MRI system.
Summary: Based on above testing, the proposed 8ch Flex Suite was found to have a safety and effectiveness profile that is similar to the predicate device.
# X. Conclusion:
Shenzhen RF Tech Co., Ltd. considers the proposed 8ch Flex Suite does not raise any new issues of safety or effectiveness and performs as well as the legally marketed predicate device.
