YY/T 0749-2009 in English

本标准规定了：
——完整了手持式超声多普勒胎儿心率检测仪的性能测量方法；
——仪器的性能要求；
——现有仪器的性能报告要求；
——随机文件中制造商公布仪器性能的要求。

Scope

This standard specifies: Complete performance measurement methods for handheld ultrasonic Doppler fetal heart rate monitors; Performance requirements for the instrument; Performance reporting requirements for existing instruments; Requirements for the performance of the instrument published by the manufacturer in the accompanying documents. This standard applies to ultrasound Doppler fetal heart rate monitors that generate a single ultrasound beam and consist of a handheld probe, which are applied to the abdomen of pregnant women and obtain fetal heart movement information by using continuous wave or quasi-continuous wave ultrasound Doppler methods. This standard does not currently apply to continuous monitoring devices that generate multiple ultrasound beams, which typically operate on a similar principle but use a flat probe attached to the patient. This standard is not an instrument design standard.