← Product Code [MOS](/submissions/RA/subpart-b%E2%80%94diagnostic-devices/MOS) · K021262 # MAGNETOM SYMPHONY QUADRATURE TX/RX HEAD COIL (K021262) _Usa Instruments, Inc. · MOS · May 21, 2002 · Radiology · SESE_ **Canonical URL:** https://fda.innolitics.com/submissions/RA/subpart-b%E2%80%94diagnostic-devices/MOS/K021262 ## Device Facts - **Applicant:** Usa Instruments, Inc. - **Product Code:** [MOS](/submissions/RA/subpart-b%E2%80%94diagnostic-devices/MOS.md) - **Decision Date:** May 21, 2002 - **Decision:** SESE - **Submission Type:** Traditional - **Regulation:** 21 CFR 892.1000 - **Device Class:** Class 2 - **Review Panel:** Radiology ## Intended Use The Magnetom Symphony Quadrature Head Coil is a quadrature transmit receive coil used for obtaining diagnostic images of the head at the 1.5Tesla field strength in Magnetic Resonance Imaging. The indications for use are the same as for standard MR imaging. The Magnetom Symphony Head Coil is designed for use with the Siemens Magnetom Symphony 1.5Tesla MRI Scanner. ## Device Story The Magnetom Symphony Head Coil is a 16 z-element quadrature transmit/receive coil designed for 1.5T MRI scanners. It captures hydrogen nuclei signals to generate diagnostic images of the head, neck, and upper chest. The device features a rigid, split-top housing with a viewing window to accommodate various head sizes and improve patient comfort. It operates by receiving RF signals from the patient; active and passive switched diodes and RF fuses prevent resonance loops and RF burns. The coil is used in clinical imaging environments by trained MRI technicians and radiologists. Output images are interpreted by physicians to assist in clinical diagnosis. The device benefits patients by providing high-quality diagnostic imaging for soft tissue and vascular structures. ## Clinical Evidence Bench testing only. No clinical data provided. Safety and effectiveness were established through comparative analysis of technical specifications, including decoupling performance (≤ -55db), RF safety mechanisms (SAR algorithm, diode switching), and material composition. ## Technological Characteristics 16 z-element quadrature transmit/receive coil. Materials: Polyurethane plastic, vinyl-coated foam. Decoupling: Active and passive switched diodes. RF safety: Pin diodes for channel isolation, fast-blowing RF fuses, non-conductive housing. Form factor: Rigid split-top design with viewing window. Connectivity: Dedicated interface for Siemens Magnetom Symphony 1.5T MRI scanner. ## Regulatory 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 - Allegra 3.0Tesla Tx/Rx Head Coil ([K002179](/device/K002179.md)) - Vision 1.5Tesla Tx/Rx Head Coil ([K932271](/device/K932271.md)) ## Submission Summary (Full Text) > This content was OCRed from public FDA records by [Innolitics](https://innolitics.com). If you use, quote, summarize, crawl, or train on this content, cite Innolitics at https://innolitics.com. > > Innolitics is a medical-device software consultancy. We help companies design, build, and clear FDA-regulated software and AI/ML devices, including [a 510(k)](https://innolitics.com/services/510ks/), [a De Novo](https://innolitics.com/services/regulatory/), [a SaMD](https://innolitics.com/services/end-to-end-samd/), [an AI/ML medical device](https://innolitics.com/services/medical-imaging-ai-development/), or [an FDA regulatory strategy](https://innolitics.com/services/regulatory/). {0}------------------------------------------------ ## SUMMARY OF SAFETY AND EFFECTIVENESS K021262 | 1-1 Device Name: | Magnetic Resonance Diagnostic Device | |-----------------------------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------| | 1-2 Proprietary Name: | Magnetom Symphony Head Coil | | 1-3 Classification: | Class II | | 1-4 Establishment Registration | 1529041 | | 1-5 Manufacture Facility Location | USA Instruments, 1515 Danner Drive
Aurora, Ohio 44202 USA
Telephone: 330-562-1000; Fax: 330-562-1422 | | 1-6 Performance Standard: | No applicable performance standards have
been issued under Section 514 of the Food,
Drug and Cosmetic Act. | | 1-7 Intended Use: | The Magnetom Symphony Quadrature Head
Coil is a quadrature transmit receive coil used
for obtaining diagnostic images of the head at
the 1.5Tesla field strength in Magnetic
Resonance Imaging. The indications for use
are the same as for standard MR imaging. The
Magnetom Symphony Head Coil is designed for
use with the Siemens Magnetom Symphony
1.5Tesla MRI Scanner. | | 1-8 Device Description: | The Magnetom Symphony Head Coil is a 16 z-
element quadrature transmit receive coil. The
coil elements and associated circuitry are
enclosed to prevent any exposure to patient or
environment. The coil electronics are enclosed
in a rigid former. The former is a split top
design with latching device and a large open
viewing window on the top. The coil design
facilitates the scanning of patients with different
head sizes and maximizes patient comfort and
ease of use. | Section 1, Page 1 {1}------------------------------------------------ 1-9 Safety and Effectiveness: | Magnetom Symphony Head Coil | Comparison to Predicate or other 510(k)
cleared products | |--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|----------------------------------------------------------------------------------------------------------| | Intended Use: Head Imaging
including diffusion weighted imaging,
angiography, functional MRI, CSI
imaging, and 3D TOF imaging. | -Similar to the Allegra 3.0Tesla Tx/Rx Head
Coil manufactured by USA Instruments, Inc.
(K002179) | | Indications for Use: Identical to
routine MRI imaging | -Similar to the Vision 1.5Tesla Tx/Rx Head
Coil manufactured by Siemens Medical
Systems. (K932271) | | Coil Enclosure Material:
Polyurethane Plastic, Vinyl coated
Foam | -Similar to the Allegra 3.0Tesla Tx/Rx Head
Coil manufactured by USA Instruments, Inc.
(K002179) | | Coil Design: 16 z-element transmit
receive Quadrature design | -Similar to the Allegra 3.0Tesla Tx/Rx Head
Coil manufactured by USA Instruments, Inc.
(K002179) | | Decoupling: Active and Passive
switched diodes; sensitivity when coil
is switched off is ≤ -55db. | -Similar to the Vision 1.5Tesla Tx/Rx Head
Coil manufactured by Siemens Medical
Systems. (K932271) | | Prevention of RF Burns: The Coil's
transmit/receive switch uses pin
diodes to isolate the receive channel
from the transmit channel; coil
elements and circuitry are enclosed in
a non-conductive housing | -Similar to the Vision 1.5Tesla Tx/Rx Head
Coil manufactured by Siemens Medical
Systems. (K932271) | | Radio Frequency Absorption:
Power deposition during imaging is
limited by SAR algorithm | -Similar to the Vision 1.5Tesla Tx/Rx Head
Coil manufactured by Siemens Medical
Systems. (K932271) | | Formation of Resonance Loops:
Active diodes and fast blowing RF
fuses isolate the coil elements from
RF fields; length of cable and stiffness
does not permit looping. | -Similar to the Vision 1.5Tesla Tx/Rx Head
Coil manufactured by Siemens Medical
Systems. (K932271) | {2}------------------------------------------------ ## DEPARTMENT OF HEALTH & HUMAN SERVICES ## Public Health Service Food and Drug Administration 9200 Corporate Boulevard Rockville MD 20850 **MAY 21 2002** Ms. Christie Shumaker Manager QA and Regulatory USA Instruments, Inc. 1515 Danner Drive AURORA OH 44202 Re: K021262 Trade/Device Name: Magnetom Symphony Quadrature Tx/Rx Head Coil Regulation Number: 21 CFR 892.1000 Regulation Name: Magnetic resonance diagnostic device Regulatory Class: II Product Code: 90 MOS Dated: April 17, 2002 Received: April 22, 2002 Dear Ms. Shumaker: 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. 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); 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. . {3}------------------------------------------------ Page 2 This letter will allow you to begin marketing your device as described in your 510(k) premarket notification. The FDA finding of substantial equivalence of your device to a legally marketed predicate device results in a classification for your device and thus, permits your device to proceed to the market. If you desire specific advice for your device on our labeling regulation (21 CFR Part 801), please contact the Office of Compliance at one of the following numbers, based on the regulation number at the top of this letter: | 8xx.1xxx | (301) 594-4591 | |----------------------------------|----------------| | 876.2xxx, 3xxx, 4xxx, 5xxx | (301) 594-4616 | | 884.2xxx, 3xxx, 4xxx, 5xxx, 6xxx | (301) 594-4616 | | 892.2xxx, 3xxx, 4xxx, 5xxx | (301) 594-4654 | | Other | (301) 594-4692 | Additionally, for questions on the promotion and advertising of your device, please contact the Office of Compliance at (301) 594-4639. Also, please note the regulation entitled, "Misbranding by reference to premarket notification" (21 CFR Part 807.97). Other general information on your responsibilities under the Act may be obtained from the Division of Small Manufacturers, International and Consumer Assistance at its toll-free number (800) 638-2041 or (301) 443-6597 or at its Internet address http://www.fda.gov/cdrh/dsma/dsmamain.html. Sincerely yours, Nancy C. Brogdon Nancy C. Brogdon Director, Division of Reproductive, Abdominal, and Radiological Devices Office of Device Evaluation Center for Devices and Radiological Health Enclosure {4}------------------------------------------------ USA INSTRUMENTS, INC. MAGNETOM SYMPHONY T/R HEAD COIL 510(K) APPLICATION Page 1 of 1 510(k) Number (if known):_长02ノ262 Device Name: Magnetom Symphony Head Coil Indications for Use: The Magnetom Symphony Head Coil is designed to manoutions retic Resonance Images of the brain, cervical spine, soft tissues and provide wagnetie head, neck and upper chest. The Magnetom Symphony Head Coil is designed for use with the Magnetom Symphony 1.5Tesla scanner manufactured by Siemens Medical Systems. > Anatomic Regions: Soft tissues and vasculature of the head, neck and upper chest. Hydrogen Nuclei Excited: The indications for use are the same as for standard imaging: The 1.5Tesla MRI system is indicated for use as an NMR device that produces images that: (1) correspond to the distribution of protons exhibiting NMR signal, Intagoo that: (1) conceptrameters (proton density, spin lattice relaxation time T1, spin-spin relaxation time T2) and (3) display the soft tissue structure of the head and whole body. When interpreted by a trained physician, these images yield information that can be useful in the determination of a diagnosis. (PLEASE DO NOT WRITE BELOW THIS LINE- CONTINUE ON ANOTHER PAGE IF NEEDED) Concurrence of CDRH, Office of Device Evaluation (ODE) Prescription Use _ OR Over-The-Counter Use (Per 21 CFR 801.109) (Optional Format 1-2-96) David A. Larson (Division Sign-Ofm- Division of Reproductive, Abdominal, and Radiological Devices: 510(k) Number K021262 --- **Source:** [https://fda.innolitics.com/submissions/RA/subpart-b%E2%80%94diagnostic-devices/MOS/K021262](https://fda.innolitics.com/submissions/RA/subpart-b%E2%80%94diagnostic-devices/MOS/K021262) **Published by [Innolitics](https://innolitics.com)** — a medical-device software consultancy. We help companies design, build, and clear FDA-regulated software and AI/ML devices. 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