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Adaptive tissue cutting system and method

A cutting method and self-adaptive technology, applied in the field of biomedicine, can solve problems such as differences in the mechanical properties of biomechanical organs, and achieve the effect of good cutting effect.

Active Publication Date: 2020-08-18
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In view of the above defects or improvement needs of the existing technology, in order to solve the technical problem of different biomechanical properties in different regions of the same tissue or differences in the mechanical properties of different organs, it is necessary to change the cutting parameters in real time during the cutting process to obtain a better cutting section. , the present invention provides an adaptive tissue cutting system and method

Method used

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  • Adaptive tissue cutting system and method

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Experimental program
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Effect test

Embodiment 1

[0053] Such as image 3 As shown, the characteristic parameter is viscoelasticity, and the viscoelasticity monitor 101 is a nanoindentation instrument. The specific method for obtaining the mapping relationship between the viscoelasticity of a test sample and the cutting frequency is as follows: The elasticity is monitored and recorded, and then cut at a certain frequency, and the section after cutting is measured with a step meter to judge whether the roughness of the section is within 0-2 μm, if so, stop changing the cutting frequency and record the cutting frequency at this time; if Otherwise, change the cutting frequency until the section roughness of the obtained sample is within 0-2 μm, stop changing the cutting frequency and record the cutting frequency at this time. Then judge whether all the test samples are completed, if not, replace another test sample, repeat the above steps to complete the record of the cutting frequency corresponding to all the test samples in se...

Embodiment 2

[0057] The characteristic parameter is the cutting force, the monitoring module 1 is the force sensor 102, the cutting frequency and the cutting force are used to adjust the module in real time, and the method of adaptive tissue cutting of the sample to be cut is specifically as follows Figure 7 Shown: Taking the mouse brain as an example, first cut the sample at a certain frequency, use a force sensor to monitor the cutting force, and judge whether the currently monitored cutting force is greater than the preset cutting force and exceeds the allowable error range, if not , then keep the current cutting frequency, if so, then output the frequency modulation signal; after the frequency modulation signal is output, through the frequency reset unit 205, first gradually increase the cutting frequency with a certain increment and output it, and judge whether the cutting force increases with the increase of the frequency , if the cutting frequency increases and the cutting force inc...

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Abstract

The invention discloses an adaptive tissue cutting system and method, and the system comprises a monitoring module which is used for the real-time monitoring of the characteristic parameters of a sample; a cutting parameter matching module which is used for matching the corresponding cutting frequency according to the currently monitored characteristic parameters of the sample; a cutting module which comprises a cutting assembly and a frequency adjusting assembly which are connected, wherein the frequency adjusting assembly is used for adjusting according to the frequency requirement output bythe cutting parameter matching module and outputting the cutting frequency, and the cutting assembly is used for cutting the sample by adopting the corresponding output frequency of the frequency adjusting assembly. The invention aims to solve the technical problem that cutting parameters need to be changed in real time in the cutting process to obtain a better cutting section in allusion to different biomechanical properties of different anatomical regions of the same tissue or difference of mechanical properties of different organs.

Description

technical field [0001] The invention belongs to the field of biomedicine, and more specifically relates to an adaptive tissue cutting system and method. Background technique [0002] The adaptive tissue cutting method is mainly aimed at the cutting of heterogeneous tissues and different organs. Inhomogeneous tissues mainly refer to the differences in the distribution of tissue mechanical properties such as viscoelastic parameters in the whole tissue; different organs such as brain, heart, liver, spleen, Kidneys, etc., have significant differences in their mechanical properties. The adaptive tissue cutting method mainly includes formulating appropriate cutting parameters according to the differences in tissue mechanical properties of various parts of the tissue. In the existing cutting methods, the cutting frequency suitable for a certain tissue is generally determined through enumeration experiments, and then the overall effect is observed. In this way, for the same sample,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/28B26D5/00B26D7/27
CPCB26D5/005B26D7/27G01N1/286G01N2001/2873
Inventor 陈键伟袁菁李亚峰龚辉
Owner HUAZHONG UNIV OF SCI & TECH