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Tactile sensor for interventional catheter

A tactile sensor and interventional catheter technology, applied in the field of biomedical medical electronics, can solve the problems of complex structure of capacitive flexible tactile sensors, and achieve the effects of easy acquisition and processing, flat response, and fast response

Pending Publication Date: 2022-04-12
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, the capacitive flexible tactile sensor based on the spherical surface designed by the patent No. CN 110068413 A has a relatively complex structure and is only used for industrial robots.

Method used

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  • Tactile sensor for interventional catheter
  • Tactile sensor for interventional catheter
  • Tactile sensor for interventional catheter

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Experimental program
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Embodiment Construction

[0044] figure 1 , figure 2 Among them, the PVDF piezoelectric film 5 is the abbreviation of polyvinylidene fluoride, which belongs to the polymer piezoelectric material. According to the characteristics of PVDF piezoelectric film 5, after the polarized film is deformed under pressure in a certain direction, a certain amount of charge will be generated on the polarized surface, and the charge will be drawn out through the copper foil wire 2 and related circuits and converted into electrical signals , the specific information of the pressure deformation on the relevant surface of the piezoelectric film can be measured at this time by detecting the change of the electrical signal.

[0045] see figure 1 , choose copper foil 4 with a thickness of 200um, select the side in contact with the object as the upper surface layer, process it into a special ring-shaped bump on this layer, and process it into a ring-shaped bump on the other side of the copper foil; secondly, intercept A ...

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Abstract

The invention relates to a tactile sensor for an interventional catheter. The whole tactile sensor is of a rod-shaped structure, the front end of the rod-shaped structure is hemispherical, the rod-shaped structure is an intervention catheter 1, and two sections of polyamide films PA3, copper foil 4 and silver-plated PVDF piezoelectric films 5 are attached to the outer surface of the intervention catheter 1 in the horizontal axial direction through the hemispherical shape; a thin and long copper foil 4 is adopted as an electrode for collecting signals to be attached to the surface of a silver-plated PVDF piezoelectric film 5, and a signal line 2 is led out from the welding position of the electrodes on the upper side and the lower side of the silver-plated PVDF piezoelectric film 5; according to the touch sensor for measuring the contact force of the front end and the side wall of the minimally invasive surgery interventional catheter, the PVDF piezoelectric film serves as a piezoelectric sensitive material, sensitivity is high, piezoelectric capacity is high, the structure is simple, and the touch sensor can be applied to the minimally invasive surgery interventional catheter.

Description

technical field [0001] The invention belongs to the field of biomedical medical electronics, and relates to a touch sensor for interventional catheters. Background technique [0002] As a new surgical method, minimally invasive surgery (MIS) has been accepted by more and more doctors and patients. Compared with traditional surgical methods, minimally invasive surgery has many advantages such as less trauma, less bleeding, less pain, faster recovery, less risk, less complications, better surgical effect, less risk of postoperative infection, and shorter recovery period for patients. However, in minimally invasive surgery, doctors cannot directly obtain intuitive tactile information through hands like traditional surgery. Therefore, in minimally invasive surgery, the lack of tactile information increases the risk of surgery, which may cause damage to healthy tissue in the patient's body, and even cause serious medical accidents. Therefore, the lack of tactile feedback inform...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B90/00A61B34/30G01L1/16H03H11/04H03M1/12
Inventor 王芳群高宇蒙英王颢茹伟民
Owner JIANGSU UNIV
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