(324 days)
No
The summary describes conventional electronic and computer circuitry for data processing and display, and there is no mention of AI or ML in the device description, intended use, or performance studies.
No
The device is indicated for providing information that could contribute to diagnosis or therapy planning, but it does not directly treat or provide therapy to the patient. It measures magnetic fields produced by the brain.
Yes
The device is described as providing "information about the magnetic fields produced by that patient's brain and information about the location of the sources of those magnetic fields" which "could contribute to diagnosis or therapy planning." This directly implies its use in diagnosing conditions.
No
The device description explicitly details numerous hardware components, including a magnetic sensor, superconducting components, a magnetically shielded room, a gantry, a patient table, monitoring devices, and a head shape/position measurement system, in addition to software.
Based on the provided information, the Magnes 2500 WH is not an In Vitro Diagnostic (IVD).
Here's why:
- IVD Definition: In Vitro Diagnostics are medical devices used to examine specimens taken from the human body, such as blood, urine, or tissue, to provide information for diagnosis, monitoring, or screening.
- Magnes 2500 WH Function: The Magnes 2500 WH directly measures magnetic fields produced by the human brain in vivo (within the living body). It does not analyze specimens taken from the body.
- Intended Use: The intended use describes the device as providing information about magnetic fields produced by the patient's brain and the location of their sources to contribute to diagnosis or therapy planning. This is a direct measurement on the patient, not an analysis of a biological sample.
Therefore, the Magnes 2500 WH falls under the category of a medical device used for in vivo measurement, not an In Vitro Diagnostic.
N/A
Intended Use / Indications for Use
Use of the Magnes 2500 WH is indicated for the patient whose physician believes that information about the magnetic fields produced by that patient's brain and information about the location of the sources of those magnetic fields could contribute to diagnosis or therapy planning.
Product codes
OLY
Device Description
The Magnes 2500 WH biomagnetometer (hereafter "Magnes 2500 WH") comprises a magnetic sensor for detecting and measuring the magnetic fields produced by the human brain, along with the auxiliary equipment required to perform the measurements in a conventional medical facility environment and to display the results of the measurements to physicians in a variety of ways.
The sensor utilizes an array of superconducting magnetic field pickup coils arranged in such a manner as to sense the magnetic fields over the portion of the skull enclosing the brain. For each such coil, a superconducting quantum interference device (SQUID) is used to detect the current induced in that coil by the brain magnetic field and produce a voltage proportional to the magnetic flux change. Conventional electronic and computer circuitry is used to amplify, filter, digitize, store and display the result of the measurement. The sensor includes an insulated reservoir of liquid helium as a refrigerant for cooling the superconducting components - pickup coils, SQUIDs, and interconnecting leads - to temperatures below their superconducting transition temperature. Heat is conducted from these superconducting elements along thermally conductive pathways into the helium reservoir.
Provided as part of the Magnes 2500 WH biomagnetometer are the following ancillary items:
Magnetically shielded room, comprised primarily of nickel-rich alloy and aluminum sheeting, to provide shielding from environmental sources of magnetic or ff noise
Manually operated non-magnetic gantry to place the sensor over the head of the patient in either a seated or supine position
- Non-magnetic patient table with hydraulic elevation, to support the patient securely in either seated or supine position
- Non-magnetic patient monitoring and communication devices, including video monitor, intercom, and head motion detector
- Head shape and head position measurement system, to provide head shape and location relative to the sensor for data modeling and display
- Computer workstation, operator console, and software to control system operation, data acquisition and storage, and data analysis and display
- Sensory stimulus systems, to provide stimulation of the patient's somatosensory, auditory, y sumulus systems, to pro for magnetic measurement of evoked response
Results of the measurement of magnetic fields produced by the brain are available in tabular form results of the measurances of magineer intour props of lines of equal magnetic field values, and as equivalent single current dipoles.
Mentions image processing
Not Found
Mentions AI, DNN, or ML
Not Found
Input Imaging Modality
Not Found
Anatomical Site
brain / head
Indicated Patient Age Range
Not Found
Intended User / Care Setting
physician / conventional medical facility environment
Description of the training set, sample size, data source, and annotation protocol
Not Found
Description of the test set, sample size, data source, and annotation protocol
Not Found
Summary of Performance Studies (study type, sample size, AUC, MRMC, standalone performance, key results)
Non-clinical tests: The substantial equivalence between the Magnes II and Magnes 2500 WH was verified by comparative non-clinical tests of each of the technological characteristics which are different, as described in 6) above.
To demonstrate the substantial equivalence of the magnetometer pickup coils as used in the Magnes 10 we to the gradiometer colls as used in the Magnes II, two bench tests were run. In the first, a dipolar source in a head phantom was activated and measured with each of the sensors, both in a uponal source in a near proment of the factory and in the presence of artificially produced magnetic une normal allionent carnomical of the waveform as measured with each sensor were then compared for both conditions. The waveforms showed no significant difference from each other, in either operating condition.
As a second test of this characteristic, the dipole in the head phantom was localized using the Magnes II and Magnes 2500 WH sensors in a number of trials. There was no significant Magines II and magnes 2000 h parameters between the two sensors - physical location, strength, or orientation.
To demonstrate the substantial equivalence of the method of refrigeration, the magnetic field 10 dealed by a fixed source was detected by representative pickup coils in the Magnes 2500 WH produced by a naked some e reservoir was full and when it was nearly empty. A similar test was which the nemail lover in all roce of a Magnes II, in which the direct immersion method of refrigeration is used. Sensitivity of the various channels was compared for these two operating conditions and no material difference measured.
Finally, to demonstrate the substantial equivalence of the methods of measuring head position, repetitive measurements of the location of reference points on a head phantom were conducted with the positioning system in the Magnes II and with the new approach taken in the Magnes 2500 WH. No significant difference between the relative locations of the reference points was found.
Key Metrics (Sensitivity, Specificity, PPV, NPV, etc.)
Not Found
Predicate Device(s)
Magnetometer
Reference Device(s)
Predetermined Change Control Plan (PCCP) - All Relevant Information
Not Found
§ 882.1400 Electroencephalograph.
(a)
Identification. An electroencephalograph is a device used to measure and record the electrical activity of the patient's brain obtained by placing two or more electrodes on the head.(b)
Classification. Class II (performance standards).
0
Image /page/0/Picture/1 description: The image shows a black and white drawing of a series of concentric circles. The circles are arranged in a way that creates a three-dimensional effect, making it appear as if they are stacked on top of each other. The innermost circle is the smallest, and the outermost circle is the largest. The circles are all evenly spaced apart, and they are all the same thickness.
BIOMAGNETIC TECHNOLOGIES 9727 Pacific Heights Blvd. San Diego, CA 92121-3719 Tel 619 453-6300 Fax 619 453-4913
MAY - 7 1997
510(k) Summary
This 510(k) Summary is being submitted pursuant to the requirement of 21 CF 807.92(c).
Biomagnetic Technologies, Inc. Submitted By: 1. 9727 Pacific Heights Blvd San Diego, CA 92121
Telephone: (619)453-6300
Fax: (619)453-4913
Contact: Eugene C Hirschkoff, Ph.D. Director, Clinical Applications
Date prepared: April 23, 1996
Magnetic Encephalograph Device trade name: 2. Magnes 2500 WH biomagnetometer Proprietary name:
Substantial equivalence is claimed to the Magnetometer, manufactured and 3. marketed by Biomagnetic Technologies, Inc. (Reference 510(k) K941553)
Description of Device: The Magnes 2500 WH biomagnetometer (hereafter "Magnes 2500 4. WH") comprises a magnetic sensor for detecting and measuring the magnetic fields produced by the human brain, along with the auxiliary equipment required to perform the measurements in a conventional medical facility environment and to display the results of the measurements to physicians in a variety of ways.
The sensor utilizes an array of superconducting magnetic field pickup coils arranged in such a manner as to sense the magnetic fields over the portion of the skull enclosing the brain. For each such coil, a superconducting quantum interference device (SQUID) is used to detect the current induced in that coil by the brain magnetic field and produce a voltage proportional to the magnetic flux change. Conventional electronic and computer circuitry is used to amplify, filter, digitize, store and display the result of the measurement. The sensor includes an insulated reservoir of liquid helium as a refrigerant for cooling the superconducting components - pickup coils, SQUIDs, and interconnecting leads - to temperatures below their superconducting transition temperature. Heat is conducted from these superconducting elements along thermally conductive pathways into the helium reservoir.
Provided as part of the Magnes 2500 WH biomagnetometer are the following ancillary items:
Magnetically shielded room. comprised primarily of nickel-rich alloy and aluminum sheeting, to provide shielding from environmental sources of magnetic or ff noise
Manually operated non-magnetic gantry to place the sensor over the head of the patient in either a seated or supine position
1
- Non-magnetic patient table with hydraulic elevation, to support the patient securely in either seated or supine position
- Non-magnetic patient monitoring and communication devices, including video monitor, intercom, and head motion detector
- Head shape and head position measurement system, to provide head shape and location relative to the sensor for data modeling and display
- Computer workstation, operator console, and software to control system operation, data acquisition and storage, and data analysis and display
- Sensory stimulus systems, to provide stimulation of the patient's somatosensory, auditory, y sumulus systems, to pro for magnetic measurement of evoked response
Results of the measurement of magnetic fields produced by the brain are available in tabular form results of the measurances of magineer intour props of lines of equal magnetic field values, and as equivalent single current dipoles.
The Magnes 2500 WH is intended for use in diagnostic procedures that Intended Use: ડે. require the measurement and display of extracranial magnetic fields and information about the electrical activity in the brain as inferred from those fields.
Technological Characteristics: The Magnes 2500 WH operates with the same principles 6. of operation as the predicate device, the Magnetometer. Magnetic field changes or operator as an processaring pickup coils, those currents are detected and converted to monec ourceme in superconducting quantum interference devices or SQUIDs, and those voltages are voluted, filtered, digitized, stored, analyzed and displayed for use by a physician. The primary allipinist, Interest, digitized, stored, and the Magnes 2500 WH is that the latter features 148 pickup coils distributed over the entire surface of the skull overlying cortical tissue while the 146 pickup couls usunous over and covering a circular area approximately 15 cm in diameter.
Because the cryogenic container housing the pickup coils is by necessity rigid and head sizes and shares vary from patient to patient, the distance from some of the pickup coils to the skull of a patient may be greater than with the Magnes II. To compensate for this, the pickup coils are purchived as magnetometers rather than axial gradiometers as in the Magnes II. Magnetometer coils offer greater sensitivity to brain sources of magnetic fields than gradiometer coils but at the expense of greater sensitivity to extrinsic magnetic noise. A secondary set of pickup coils, spatially separated from the primary pickup coils, are used to detect magnetic noise and subtract it from the primary signals, creating the functional equivalent of an axial gradiometer.
The Magnes II refrigerates one set of the superconducting components of the sensor by immersing them directly in liquid helium, the other by solid thermal conduction. In the Magnes 2500 WH, all of the superconducting components are refrigerated by solid thermal conductors which thermally connect each such component to the liquid helium reservoir.
In the Magnes II, the position of the patient's head was measured using a third-party position indicator system which operated by essentially measuring the mutual inductance between small receiver coils mounted on the patient's head or in a wand and a low level ff transmitter coil mounted on one sensor housing. In the Magnes 2500 WH, the same principle of operation is
2
employed, but small very low level transmitter coils are mounted on the patient's head and the field enployed, but shall very tow sured by the biomagnetometer pickup coils themselves.
The substantial equivalence between the Magnes II and Magnes Non-clinical tests: 7. 2500 WH was verified by comparative non-clinical tests of each of the technological characteristics which are different, as described in 6) above.
To demonstrate the substantial equivalence of the magnetometer pickup coils as used in the Magnes 10 we to the gradiometer colls as used in the Magnes II, two bench tests were run. In the first, a dipolar source in a head phantom was activated and measured with each of the sensors, both in a uponal source in a near proment of the factory and in the presence of artificially produced magnetic une normal allionent carnomical of the waveform as measured with each sensor were then compared for both conditions. The waveforms showed no significant difference from each other, in either operating condition.
As a second test of this characteristic, the dipole in the head phantom was localized using the Magnes II and Magnes 2500 WH sensors in a number of trials. There was no significant Magines II and magnes 2000 h parameters between the two sensors - physical location, strength, or orientation.
To demonstrate the substantial equivalence of the method of refrigeration, the magnetic field 10 dealed by a fixed source was detected by representative pickup coils in the Magnes 2500 WH produced by a naked some e reservoir was full and when it was nearly empty. A similar test was which the nemail lover in all roce of a Magnes II, in which the direct immersion method of refrigeration is used. Sensitivity of the various channels was compared for these two operating conditions and no material difference measured.
Finally, to demonstrate the substantial equivalence of the methods of measuring head position, repetitive measurements of the location of reference points on a head phantom were conducted with the positioning system in the Magnes II and with the new approach taken in the Magnes 2500 WH. No significant difference between the relative locations of the reference points was found.
The comparative non-clinical tests produced no significant differences Conclusion: 8. between those elements of the Magnes II and the correspondent elements of the Magnes 2500 WH for which there has been some in technological approach. Since all other elements of the two systems are technologically the same, we conclude that the Magnes 2500 WH is substantially equivalent to the predicate Magnes system.
Please direct any questions concerning this 510(k) Summary to the contact person noted above.
3
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Food and Drug Administration 10903 New Hampshire Avenue Document Control Room -WO66-G609 Silver Spring, MD 20993-0002
Eugene C. Hirschkoff, Ph.D. Director of Clinical Applications Biomagnetic-Technologies 9727 Pacific Heights Boulevard San Diego, California 92121-3719
Re: K962317
Trade/Device Name: Magnes 2500 WH Biomagnetometer Regulation Number: 21 CFR 882.1400 Regulation Name: Electroencephalograph Regulatory Class: II Product Code: OLY Dated (Date on orig SE ltr): March 5, 1997 Received (Date on orig SE ltr): March 6, 1997
Dear Mr. Hirschkoff:
This letter corrects our substantially equivalent letter of May 7, 1997.
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.
APR - 9 2012
4
Page 2 - Mr. Eugene C. Hirschkoff
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.
If you desire specific advice for your device on our labeling regulation (21 CFR Part 801), please go to http://www.fda.gov/AboutFDA/CentersOffices/CDRH/CDRHOffices/ucm115809.htm for the Center for Devices and Radiological Health's (CDRH's) Office of Compliance. Also, please note the regulation entitled, "Misbranding by reference to premarket notification" (21CFR 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 Small Manufacturers, International and Consumer Assistance 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.
Sincerely yours,
Kesia Alexander
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Malvina B. Eydelman, M.D. Director Division of Ophthalmic, Neurological, and Ear, Nose and Throat Devices Office of Device Evaluation Center for Devices and Radiological Health
Enclosure
5
510(k) Number (if known): K962317
Jacc Name: Magnes 2500 WH Biomagnetometer
Indications For Use:
11 ---
Use of the Magnes 2500 WH is indicated for the patient whose physician believes that information about the magnetic fields produced by that patient's brain and information about the location of the sources of those magnetic fields could contribute to diagnosis or therapy planning.
(PLEASE DO NOT WRITE BELOW THIS LINE - CONTINUE ON ANOTHER PAGE IF NEEDED)
Concurrence of CDRH, Office of Device Evaluation (ODE)
Luticia Zimmerman
(Division Sign-Off Division of Cardiovasguages and Neurological Deyic
510(k) Number K962317
'rescription Use
Per CFR 801.109)
OR
Over-The-Counter Use
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حساب
(Optional Format 1-2-96)