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Micromanipulation device used for microoperation

A technology of micromanipulation and micromanipulation needle, which is used in the preparation of test samples, the determination/inspection of microorganisms, and the inspection of materials, etc. It can solve problems such as large driving voltage, achieve fast response speed, good displacement response, simple structure

Inactive Publication Date: 2007-12-05
HARBIN ENG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

The disadvantages of piezoelectric ceramic drive include large drive voltage and so on.

Method used

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  • Micromanipulation device used for microoperation
  • Micromanipulation device used for microoperation
  • Micromanipulation device used for microoperation

Examples

Experimental program
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Embodiment Construction

[0030] The present invention will be further described below in conjunction with the specific embodiment of accompanying drawing:

[0031] 3 and 7, the present embodiment includes a control unit and a micromanipulator, and the control unit includes a controller, an A / D conversion circuit connected to the controller and a displacement acquisition unit. In this embodiment, the controller is a single-chip microcomputer, and the displacement acquisition The unit is a laser positioner, and the A / D conversion circuit includes an AD conversion circuit connecting the laser positioner and the single-chip microcomputer and a DA conversion circuit connecting the single-chip and the micromanipulator. The laser positioner is connected to the micromanipulator at the same time, and the single-chip computer is connected Two DA conversion circuits are respectively connected, the output ends of the two DA conversion circuits are respectively connected to the amplification circuit, the output end...

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Abstract

The invention provides a kind of micro-operation micromanipulation equipment which includes a control unit and a micromanipulation hand. The control unit includes a controller, an A / D switching circuit of connection controller, and the displacement collect unit and the micromanipulation hand includes two-strip shape memory alloy, micro-operation pin and the fixed section and the two-strip shape memory alloy sets up at the two side of the micromanipulation pin by the fixed section and the two-strip shape memory alloy connects with the control unit. The micromanipulation pin can work at the condition of low-frequency alternate current it has the merits like the fast response speed and the simple structure. By the experiment we can get that: the closed loop system can get the well displacement reaction driving at the frequency of 0.2 Hz and the displacement can continue to increase with the increase of the current in the consent rang.

Description

(1) Technical field [0001] The invention relates to an operating device for puncturing micron-sized objects. (2) Background technology [0002] The puncture of biological cells is the basis of microdissection. It is a simple and fast method for DNA, RNA and protein analysis of single cells, especially for the research of cell lesions and cancer. The application of this technology to single cells can give research Staff provide a new technique based on the combination of traditional methods of morphology and molecular techniques. For example, to study the molecular mechanism of diseased tissue requires microscopic analysis of diseased cells. Due to the presence of normal cells in tissue sections, some biological information is often disturbed, thus inhibiting the application of cell diagnostic technology. From this perspective, defined cells or cell populations must be extracted from the slice. The puncture technique is used in this extraction process. At present, hospital...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/28G01N33/48C12Q1/02
Inventor 汝长海郭书祥王希花叶秀芬
Owner HARBIN ENG UNIV
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