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Indentation Measuring Device for Mechanical Properties of Remnant Limb Soft Tissue

A measuring device and technology of mechanical properties, applied in the field of medical engineering prosthetic fitting detection, can solve the problems of inability to ensure the vertical relationship between the indenter and the measuring tissue, the measured tissue is not fixed, the measurement results are inaccurate, etc., and achieve objective and fast measurement. The effect of measuring, measuring data accurately

Active Publication Date: 2020-11-10
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are still defects in this method at present: the structure is too complicated, it is not portable, and the operation is not flexible; the measured tissue is not fixed relative to the indentation device, and the vertical relationship between the indenter and the measured tissue cannot be guaranteed, resulting in inconsistent measurement results. Inaccurate

Method used

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  • Indentation Measuring Device for Mechanical Properties of Remnant Limb Soft Tissue
  • Indentation Measuring Device for Mechanical Properties of Remnant Limb Soft Tissue
  • Indentation Measuring Device for Mechanical Properties of Remnant Limb Soft Tissue

Examples

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Effect test

Embodiment 1

[0045] An indentation measuring device for the mechanical properties of residual soft tissue, such as figure 1 As shown, it includes a supporting mechanism 1 arranged on the ground. The support mechanism 1 includes a support base plate 11 placed on the ground. The support base plate 11 is a square plate. The support base plate 11 is fixed with a support rod 213 whose axis is along the thickness direction of the support base plate 11. The support rod 213 is a square rod. A connecting plate is fixed on the support base plate 11 with screws, and a reinforcing rib welded to the connecting plate is welded at one end of the supporting rod 213 facing the connecting plate.

[0046] Such as figure 1 As shown, an adjustment mechanism 2 is connected to the support mechanism 1 .

[0047] Such as figure 2 As shown, the adjustment mechanism 2 includes a vertical adjustment mechanism 21, and the vertical adjustment mechanism 21 includes a slider 211 that is sleeved on the outside of the ...

Embodiment 2

[0066] An indentation measuring device for the mechanical properties of soft tissue of residual limbs, the difference from Embodiment 1 is that, as Figure 5 As shown, the linear stepper motor 53 uses a fixed-axis linear stepper motor, and the output end of the linear stepper motor 53 is fixed with a pressure rod 63 using a coupling, and the pressure sensor 62 is fixed on the pressure rod 63 with screws. The casing 65 is sheathed outside the output end of the linear stepping motor 53 and is free to slide along the axial direction of the output end of the linear stepping motor 53 . The potentiometer 54 is set as a digital encoder arranged on the linear stepper motor 53 for measuring and recording the displacement distance of the output end of the linear stepper motor 53 .

[0067] Such as Figure 6 As shown, the annular outer side of the airbag 4 is cemented and connected with a ring 43 , the ring 43 is embedded in the inner side of the rigid shell 3 , and the outer side of th...

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Abstract

The invention discloses an indentation measuring device for mechanical properties of soft tissue of residual limbs, belongs to the field of medical engineering prosthetic fitting detection, and aims at making the structure of a measurement device simple and portable and making measurement data more accurate. The indentation measuring device for the mechanical properties of the soft tissue of the residual limbs is characterized by comprising a rigid shell, wherein the inner side of the rigid shell is provided with an air bag, the air bag is filled with a certain pressure of gas, the side face of the rigid shell is provided with an avoidance hole, the rigid shell is provided with an indentation measuring device body, the indentation measuring device body comprises a fixedly arranged holder,an output end of the holder is connected with a linear stepping motor, the linear stepping motor is provided with displacement measurement equipment for measuring the moving distance of an output endof the linear stepping motor, the output end of the linear stepping motor is connected with a pressure sensor, and the pressure sensor is connected with a pressing rod passing through the avoidance hole. The indentation measuring device solves the problems that an existing structure is complicated in structure, and poor in portability, and a vertical relation between a pressure head and measurement tissue is difficult to ensure, a compression state of a prosthetic socket to the residual limbs is fully simulated in the measurement process, and the squeezing effect of the surrounding soft tissueon a measurement site is avoided as much as possible.

Description

technical field [0001] The invention relates to the field of medical engineering prosthetic fitting detection, in particular to an indentation measuring device for mechanical properties of soft tissue of residual limbs. Background technique [0002] According to statistics, there are more than 85 million people with disabilities in my country, and more than 24 million people with physical disabilities. There are many types of prosthetics, and the parts connected to the body need to be individually designed, and need to meet the requirements of functionality and comfort, which requires the analysis of the mechanical properties of the residual limb soft tissue. [0003] The traditional manual palpation method is to use fingers to press the soft tissue, and then rely on the operator's hand feeling to qualitatively give the hardness score of the touched part. The test results of this method are very subjective and very dependent on the experience of the operator, so the researc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B5/00
Inventor 蒲放胡琳琳樊瑜波任伟燕刘文勇
Owner BEIHANG UNIV
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