K980402 · Capintec, Inc. · IYE · Apr 24, 1998 · Radiology
Device Facts
Record ID
K980402
Device Name
CAPINTEC MODEL 292 ELECTROMETER
Applicant
Capintec, Inc.
Product Code
IYE · Radiology
Decision Date
Apr 24, 1998
Decision
SESE
Submission Type
Traditional
Regulation
21 CFR 892.5050
Device Class
Class 2
Indications for Use
THE CAPINTEC 292 ELECTROMETER IS INTENDED TO BE USED BY TRAINED MEDICAL PHYSICISTS OR QUALIFIED RADIATION THERAPY TECHNOLOGISTS TO PERFORM QUALITY ASSURANCE CHECKS AND MEASUREMENTS ON THE OUTPUT FROM THERAPEUTIC X-RAY MACHINES OR TELETHERAPY UNITS. WITH THE ADDITION OF AN OPTIONAL CAPINTEC CRC DOSE CALIBRATOR CHAMBER, THE 292 MAY ALSO BE USED BY TRAINED MEDICAL PAYSICISTS OR QUALIFIED TECHNOLOGISTS TO MEASURE RADIOACTIVE SOURCES USED FOR THERAPEUTIC OR DIAGNOSTIC TREATMENT.
Device Story
Capintec Model 292 is a software-controlled, low-impedance electrometer designed for radiation therapy quality assurance. It accepts electrical current inputs from ionization chambers or dose calibrator chambers. The device transforms these inputs into radiological units using internal software algorithms. It is operated by medical physicists or radiation therapy technologists in clinical settings. The output, displayed to the user, provides precise measurements of radiation output from therapeutic x-ray machines, teletherapy units, or radioactive sources. This data assists clinicians in verifying machine performance and ensuring accurate dosing for patient treatment, thereby supporting safe and effective radiation therapy.
Clinical Evidence
Bench testing only. Comparison of 292 and 192 electrometers using NIST-calibrated ionization chambers across various machine settings showed excellent agreement. Software algorithms verified against manual calculations with 100% agreement. Radioactive source measurements compared to CRC 15R dose calibrator showed agreement within 1%. Limited clinical evaluation performed at selected radiation oncology facilities to confirm functional acceptance.
Technological Characteristics
Microprocessor-based electrometer; low impedance design; four measurement ranges; adjustable bias voltage. Interfaces with ionization chambers and CRC dose calibrator chambers. Software-controlled data processing. Replaces analog circuitry of predecessor with digital microprocessor technology.
Indications for Use
Indicated for use by trained medical physicists or qualified radiation therapy technologists to perform quality assurance checks and measurements on therapeutic x-ray machine or teletherapy unit output, and to measure radioactive sources for therapeutic or diagnostic treatment when used with a Capintec CRC dose calibrator chamber.
Regulatory Classification
Identification
A medical charged-particle radiation therapy system is a device that produces by acceleration high energy charged particles (e.g., electrons and protons) intended for use in radiation therapy. This generic type of device may include signal analysis and display equipment, patient and equipment supports, treatment planning computer programs, component parts, and accessories.
Predicate Devices
Capintec Model 192 electrometer
CRC 15R dose calibrator
Submission Summary (Full Text)
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APR 2 4 1998
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K980402
## CAPIN
## 510(k) SUMMARY
Submission Date: January 30, 1998
Pursuant to the requirements of Section 510(k) of the Food, Drug, and Cosmetic Act, notification is made of the intention of Capintec, Inc. to manufacture and market an electrometer used for output measurements of therapeutic x-ray machines, teletherapy units, or radioactive sources.
Capintec is divided into two physical locations as follows:
Corporate Headquarters Capintec. Inc. 6 Arrow Road Ramsey, New Jersey 07446 Phone 201-825-9500 201-825-1336 FAX
Manufacturing Facility Capintec, Inc. 540 Alpha Drive Pittsburgh, PA 15238 Phone 412-963-1988 FAX 412-963-0610
Contact Person: Mary Anne Dell Contact Site: Manufacturing Facility
Classification Name: Electrometer IYE (892.5050) (accessory item to linear accelerator) Classification Number: Common or Usual Name: Electrometer Capintec Model 292 Electrometer Proprietary Name: Establishment Registration Number: 2518843 Regulatory Class: II
Description: The 292 is a precise and accurate software controlled low impedance electrometer with four measurement ranges, adjustable + bias voltage which can act as a dose or dose rate meter.
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Substantial equivalence: The model 292 is a microprocessor based upgrade of the model 192 electrometer. Both units perform exactly the same function, measure current with high precision over a select range of interest, and convert the measured current to radiological units with appropriate conversion factors. Both units were developed for use with the same ionization chambers, and same application. The model 192 uses analog circuitry for measurement and calibration, while the 292 has replaced the analog circuitry with microprocessor based technology to provide enhanced performance specifications and better data manipulation. The 192 is a preamendment device which was first manufactured and distributed in 1973, and is still sold today.
Intended Use: The Capintec 292 electrometer is intended to be used by trained medical physicists or qualified radiation therapy technologists to perform quality assurance checks and measurements on the output from therapeutic linear accelerators or teletherapy units. With the addition of a Capintec CRC dose calibrator chamber, the 292 may also be used by trained medical physicists or qualified technologists to measure radioactive sources used for therapeutic or diagnostic treatment.
Test Results: The same NIST calibrated ionization chamber was used with both the 192 and 292 electrometers, and measurements were made under a variety of accelerator and orthovoltage machine settings. Test results from both electrometers show excellent agreement to the limits of the reproducibility of the individual x-ray machines. In addition, the software algorithms were verified against manual calculations and agreement was 100%.
After the addition of a CRC dose calibrator chamber to the 292, the same NIST radioactive sources were measured on the 292 and a CRC 15R dose calibrator. Results agreed to within 1%.
Capintec has released several 292 units to selected radiation oncology facilitates for clinical testing and evaluation and provided testing procedures to each site. Acceptance criteria is 100% success in function and intended use. Suggestions received for improvement in the software or hardware from these "beta test sites" will be evaluated, tested, and incorporated when appropriate. Any problems discovered during this process will be corrected prior to release to production for commercial shipment.
Conclusion: The 292 functions as intended and is substantially equivalent in performance and intended use to the 192 electrometer for measurement of output from therapy x-ray machines and equivalent to the CRC15R dose calibrator in performance and intended use for the measurement of radioactive sources used in therapy or diagnostic applications. The 292 provides significantly improved performance specifications and better data manipulation compared to its predicate devices.
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Food and Drug Administration 9200 Corporate Boulevard Rockville MD 20850
## APR 2 4 1998
Mary Anne Dell, M.S. General Manager and Radiation Physicist Capintec, Inc. 540 Alpha Drive Pittsburgh, PA 15238
Re:
K980402 Capintec Model 292 Electrometer Dated: January 30, 1998 Received: February 2, 1998 Regulatory class: II 21 CFR 892.5050/Procode: 90 IYE
Dear Ms. Dell:
We have reviewed your Section 510/k) notification of intent to market the device referenced above and we have determined the device is substantially equivalent (for the indications for use stated in the enclosure) to 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). 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 III (Premarket Approval), it may be subject to such additional controls. Existing major regulations affecting your device can be found in the Code of Federal Regulations, Title 21, Parts 800 to 895. A substantially equivalent determination assumes compliance with the Current Good Manufacturing Practice requirements, as set forth in the Quality System Regulation (OS) for Medical Devices: General regulation (21 CFR Part 820) and that, through periodic QS inspections, the Food and Drug Administration (FDA) will verify such assumptions. Failure to comply with the GMP regulation may result in regulatory action. In addition. FDA may publish further announcements concerning your device in the Federal Register. Please note: this response to your premarket notification submission does not affect any obligation you might have under sections 531 through 542 of the Act for devices under the Electronic Product Radiation Control provisions, or other Federal laws or regulations.
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 and additionally 809.10 for in vitro diagnostic devices), please contact the Office of Compliance at (301) 594-4613. 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 807.97). Other general information on your responsibilities under the Act may be obtained from the Division of Small Manufacturers Assistance at its toll-free number (800) 638-2041 or (301) 443-6597 or at its Internet address "http://www.fda.gov/cdrh/dsmaldsmamain.html".
Sincerely yours,
Kilian Yin
Lillian Yin, Ph.D. Director, Division of Reproductive Abdominal, Ear, Nose and Throat and Radiological Devices Office of Device Evaluation Center for Devices and Radiological Health
Enclosure
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Page
K980402 10(1) Number (if known):
Device Name: CAPINTEC MODEL 292 ELECTROMETER
1
ﻟﻤﺖ. ﻋ
indic: tions l'or Use:
THE CAPINTEC 292 ELECTROMETER IS INTENDED TO BE USED BY TRAINED MEDICAL PHYSICISTS OR QUALIFIED RADIATION THERAPY TECHNOLOGISTS TO PERFORM QUALITY ASSURANCE CHECKS AND MEASUREMENTS ON THE OUTPUT FROM THERAPEUTIC X-RAY MACHINES OR TELETHERAPY UNITS.
WITH THE ADDITION OF AN OPTIONAL CAPINTEC CRC DOSE CALIBRATOR CHAMBER, THE 292 MAY ALSO BE USED BY:TRAINED MEDICAL PAYSICISTS OR QUALIFIED TECHNOLOGISTS TO MEASURE RADIOACTIVE SOURCES USED FOR THERAPEUTIC OR DIAGNOSTIC TREATMENT.
(F LEASE DO NOT WRITE BELOW THIS LINE - CONTINUE ON ANOTHER PAGE IF NEEDED)
Concurrence of CDRH, Office of Device Evaluation (ODE)
(Division Sign-Off)
Division of Reproductive, Abdominal, ENT,
and Radiological Devices
510(k) Number K980402
Prescription Use
('er 2. CFR 801.109)
OR
Over-The-Counter Use
(Optional Format 1-2-96)
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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.
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A lot of people predicated them for a reason. Clicking a node traces parents and children, and selections from search carry over pre-selected.
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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.