Contact type living body skeleton distance measuring device

Abstract

A contact type living body skeleton distance measuring device is characterized by comprising a fixed contact (2) and a test contact (13) which can move on a slide rail. The test contact (13) is driven by a screw rod to move on the slide rail directly or through a connecting device. The screw rod and the slide rail are assembled on a fixed frame (7). One end of the screw rod is axially connected with a drive shaft of a drive device through an electromagnetic clutch (9). The test contact (13) is connected with a distance measuring device body directly or through the connecting device. According to the contact type living body skeleton distance measuring device, the current value of the electromagnetic clutch is monitored and controlled, so that the contact pressure between the test contact and the skin is controllable, the amount of compression of the skin is constant, different measurement person-time results are comparable, and it can be guaranteed that the root bone portion is not subjected to excessive pressure.

Description

technical field [0001] The invention relates to a length measuring device, especially applied in the field of measuring the thickness of the calcaneal bone of a human body. technical background [0002] At present, commonly used length measuring devices, such as vernier calipers, screw micrometers, etc., when using commonly used length measuring tools in the field of biological tissue measurement, the distance measuring instrument is adjusted by the operator according to the feeling of the test contact, and then manually Readings, such as measuring bone thickness through human skin, have the following disadvantages: [0003] (1) Since soft objects are compressed differently under different pressures (determined by the stiffness of the object), it is difficult to achieve high consistency in each measurement result. [0004] (2) Due to the differences in reading habits of operators, the consistency of multiple measurements by different personnel cannot be guaranteed. [0005...

AI Technical Summary

Problems solved by technology

[0003] (1) Since soft objects are compressed differently under different pressures (determined by the stiffness of the object), it is difficult to achieve high consistency in each measurement result

[0004](2) Due to the difference in reading habits of operators, the consistency of multiple measurements by different personnel cannot be guaranteed

[0005](3) Due to the difference in the maximum pressure that soft objects can withstand, this measuring instrument cannot meet the requirements of accurate soft tissue measurement under the same pressure conditions

[0006](4) If it is used on vulnerable parts such as the human body surface, it is easy to cause injury accidents due to excessive pressure

[0007] (5) After the ranging is completed, it is difficult to keep the position of the measuring contact fixed for the next step of testing other biophysical quantities

Images