YY/T 0951-2015Interferential current therapy instrument (English PDF)

1 Scope

This standard specifies the terms and definitions, classifications, requirements, test methods, inspection rules, and standards for interference electrotherapy equipment (hereinafter referred to as equipment):

logo, instruction manual, packaging, transportation and storage:

This standard applies to the equipment specified in 3:1:

2 Normative references

The following documents are indispensable for the application of this document: For dated references, only the dated version applies to this document pieces: For undated references, the latest version (including all amendments) applies to this document:

GB/T 191-2008 Packaging, storage and transportation icon marks

GB 9706:1-2007 Medical Electrical Equipment Part 1: General Safety Requirements

GB/T 14710-2009 Environmental requirements and test methods for medical electrical appliances

GB/T 16886:1 Biological evaluation of medical devices Part 1: Evaluation and testing in the risk management process

YY/T 0466:1-2009 Symbols for medical device labeling, marking and providing information for medical devices Part 1: General

Require

YY 0505 Medical Electrical Equipment Part 1-2: General Safety Requirements Collateral Standard: Electromagnetic Compatibility Requirements and Tests

YY 0607-2007 Medical Electrical Equipment Part 2: Special Requirements for Safety of Nerve and Muscle Stimulators

YY 0868-2011 Electrodes for nerve and muscle stimulators

3 Terms and Definitions

The following terms and definitions defined in GB 9706:1-2007 and YY 0607-2007 apply to this document:

3:1

At the same time, two or more (including two) AC currents of different frequencies (within the frequency range of 1000Hz~100000Hz) are exchanged:

It is a device that acts on the human body to form a low-frequency modulation current in the tissue for treatment:

3:2

Beat frequency beatfrequency

The difference between the frequencies of the two carriers:

3:3 carrier wave

A periodic oscillating current: In modulated waves, an intermediate frequency alternating current is modulated:

3:4

Modulation

The process of using a modulating wave to change a certain characteristic (such as amplitude, frequency, or phase) of a carrier:

3:5

Two-path interference two-path interference […]