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U.S. Department of Health and Human Services

Recognized Consensus Standards: Medical Devices
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Part B: Supplementary Information Sheet (SIS)
FR Recognition List Number 058 Date of Entry 05/30/2022 
FR Recognition Number 12-343
Standard
IEC  62127-1 Edition 2.0 2022-03
Ultrasonics - Hydrophones - Part 1: Measurement and characterization of medical ultrasonic fields
Scope/Abstract
This part of IEC 62127 specifies methods of use of calibrated hydrophones for the measurement in liquids of acoustic fields generated by ultrasonic medical equipment including bandwidth criteria and calibration frequency range requirements in dependence on the spectral content of the fields to be characterized.

This document:
- defines a group of acoustic parameters that can be measured on a physically sound basis;
- defines a second group of parameters that can be derived under certain assumptions from these measurements, and called derived intensity parameters;
- defines a measurement procedure that can be used for the determination of acoustic pressure parameters;
- defines the conditions under which the measurements of acoustic parameters can be made using calibrated hydrophones;
- defines procedures for correcting for limitations caused by the use of hydrophones with finite bandwidth and finite active element , and for estimating the corresponding uncertainties.
Extent of Recognition
Complete standard
Rationale for Recognition
This standard is relevant to medical devices and is recognized on its scientific and technical merit and/or because it supports existing regulatory policies.
Public Law, CFR Citation(s) and Procode(s)*
Regulation Number Device Name Device Class Product Code
§892.1550 System, Imaging, Pulsed Doppler, Ultrasonic Class 2 IYN
§892.1560 System, Imaging, Pulsed Echo, Ultrasonic Class 2 IYO
Relevant FDA Guidance and/or Supportive Publications*
Guidance for Industry and FDA Staff Information for Manufacturers Seeking Marketing Clearance of Diagnostic Ultrasound Systems and Transducers. Document issued on: September 9, 2008.

Appropriate Use of Voluntary Consensus Standards in Premarket Submissions for Medical Devices - Guidance for Industry and Food and Drug Administration Staff, issued September 2018.
FDA Technical Contact
 Keith Wear
  FDA/OC/CDRH/OSEL/DAM/
  301-796-2538
  keith.wear@fda.hhs.gov
Standards Development Organization
IEC International Electrotechnical Commission http://www.iec.ch/
FDA Specialty Task Group (STG)
Radiology
*These are provided as examples and others may be applicable.
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