An ultrasonic bone densitometer probe moving device

Abstract

The invention discloses a probe moving device for an ultrasonic bone mineral density instrument. The ultrasonic bone mineral density instrument comprises two probes; the probe moving device comprises a bottom plate, a rail, two sliders and two constant-force springs, wherein each slider is arranged on the rail in a sliding mode, each slider can slide back and forth along the rail, a constant-force spring fixing frame is located on the outer side of the middle of the rail, the main bodies of the two constant-force springs are respectively arranged at the left end and the right end of the constant-force spring fixing frame, the outer ends of the two constant-force springs are fixedly connected with the two sliders respectively, the two probes are respectively arranged at the tops of the two sliders, the two sliders are far away from each other after the two sliders are pulled outwards, and the two sliders are close to each other under the action of the elastic force of the two constant-force springs, so that the two probes are driven to be close to each other. The probe moving device disclosed by the invention has the advantages that the constant-force springs are used as a tension source, so that the pressure exerted by the probes on the heels with different scales is constant, meanwhile, the influences of the placing position of the heels is eliminated, and thus the measurement result is stable and accurate.

Description

technical field [0001] The invention relates to the technical field of medical instruments, in particular to a probe moving device for an ultrasonic bone densitometer. Background technique [0002] With the intensification of population aging, people pay more and more attention to osteoporosis. In the context of no effective treatment, it is very necessary to predict and effectively prevent the occurrence of osteoporosis. Ultrasound measurement Bone density can achieve better prediction results. Ultrasonic bone densitometers are being used more and more widely because of their safety, non-invasiveness, portability, and low testing costs. [0003] When the ultrasonic bone densitometer measures the bone density of the human body, the ultrasonic transmitting and receiving probes need to be clamped on the human calcaneus with equal and appropriate pressure to ensure the accuracy of the measurement results. Since the size of each person's heel is different, the usual method is t...

AI Technical Summary

Problems solved by technology

Since the size of each person's heel is different, the usual method is to use a ball screw with a stepping motor to drive the probe, and at the same time use a pressure sensor module to control the position of the probe, which will make the device too bulky and difficult to carry. failure, and it is difficult to ensure that both probes are equally stressed

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