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IPMC (ion-exchange polymer metal composite) medical catheter and manufacture method thereof

A catheter and solid electrolyte technology, applied in the direction of catheters, etc., can solve the problems of electromagnetic field-driven catheters lack of theoretical support, difficult to use actual surgery, patient discomfort, etc., to achieve precise and controllable multi-motion degrees of freedom bending and guiding characteristics, efficient minimally invasive intervention Positioning technology, good effect with biocompatibility

Inactive Publication Date: 2019-12-31
SUZHOU INST OF NANO TECH & NANO BIONICS CHINESE ACEDEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these catheters also have their own advantages and disadvantages. Rope-driven catheters can provide greater energy, but the structure is complex and the size is thicker and larger.
The operation method of the rope-driven catheter is also very complicated, and it is very dependent on the operation level of the technicians, so it is very difficult to popularize
At present, the most studied is the shape memory alloy driven catheter. The main problem is that the driving response is slow, which seriously affects the surgical operation time; and when the catheter is bent and deformed, a large amount of heat will be generated, which will easily bring discomfort to the patient.
Piezoelectric-driven and electromagnetic-field-driven catheters generally lack specific theoretical support, and the calculation of the relationship between bending stiffness and the size of catheter-guided robot parts is very complicated and difficult to use in actual operations

Method used

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  • IPMC (ion-exchange polymer metal composite) medical catheter and manufacture method thereof
  • IPMC (ion-exchange polymer metal composite) medical catheter and manufacture method thereof
  • IPMC (ion-exchange polymer metal composite) medical catheter and manufacture method thereof

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preparation example Construction

[0046] see image 3 , the present embodiment also provides a preparation method for preparing the above-mentioned IPMC medical catheter, wherein the IPMC medical catheter includes a solid electrolyte tube and an even number of metal electrodes coupled with the solid electrolyte tube, and the preparation method includes the steps :

[0047] S1. Take the solid electrolyte tube, and process the surface of the solid electrolyte tube to obtain the treated solid electrolyte tube;

[0048] Specifically, refer to image 3 , step S1 includes:

[0049] S11. Take a solid electrolyte tube, and roughen the surface of the solid electrolyte tube to obtain a roughened solid electrolyte tube; wherein, the surface roughening can be achieved by sanding or plasma etching;

[0050] S12. Treat impurities on the surface of the roughened solid electrolyte tube with an inorganic washing solution to obtain a treated solid electrolyte tube. Wherein, the inorganic lotion is one or more of deionized w...

Embodiment 1

[0065] The implementation steps of this embodiment are as follows:

[0066] 11. Take the solid electrolyte and roughen its surface; the solid electrolyte tube in this embodiment is a perfluorosulfonic acid tube, which is made by solution casting and has a transparent color. Use 1200 mesh sandpaper to polish the perfluorosulfonic acid tube for 600° Second, roughen the surface.

[0067] 12. Treat the impurities on the surface of the roughened solid electrolyte tube; ultrasonically clean the polished perfluorosulfonic acid tube for 3 times with dilute sulfuric acid and deionized water respectively (interleaved cleaning with dilute sulfuric acid and deionized water, respectively), each time 10min, the purpose is to remove debris attached to the surface of the material and other easily detachable impurities. Under a water bath at 75°C, the perfluorosulfonic acid tube was washed three times with hydrogen peroxide solution to remove organic impurities.

[0068] 13. Forming a metal ...

Embodiment 2

[0084] The implementation steps of this embodiment are as follows:

[0085] 21. Take the solid electrolyte and roughen its surface; the solid electrolyte tube in this embodiment is a perfluorosulfonic acid tube made by solution casting method, the color is transparent, and the density is 1.27g / cm 3 , the molar mass is 356g / mol, and the ionic conductivity is 1.2×10 -4 S / cm, surface roughening of perfluorosulfonic acid tubes by plasma etching process.

[0086] 22. Treat the impurities on the surface of the roughened solid electrolyte tube; ultrasonically clean the polished perfluorosulfonic acid tube once with sodium hydroxide solution, sodium chloride solution and deionized water, each time for 10 minutes, in order to remove The debris attached to the surface of the material is easy to get rid of impurities. Under a water bath at 65°C, the perfluorosulfonic acid tube was washed three times with hydrogen peroxide solution to remove organic impurities.

[0087] 23. Forming a m...

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Abstract

The invention discloses an IPMC (ion-exchange polymer metal composite) medical catheter and a manufacture method thereof. The IMPC medical catheter comprises a solid state electrolyte tube and an evennumber of metal electrodes which are arranged on the surface of the solid state electrolyte tube and are coupled with the solid state electrolyte tube. The preparation method comprises the followingsteps of: taking the solid state electrolyte tube, and processing the surface of the solid state electrolyte tube, so as to obtain the processed solid state electrolyte tube; and through a chemical reduction technology or a magnetron sputtering technology, forming an even number of metal electrodes which extend along the length direction of the solid state electrolyte tube on the processed surfaceof the processed solid state electrolyte tube, wherein the metal electrodes are arranged at intervals along the circumferential direction of the solid state electrolyte tube. By use of the IPMC medical catheter and the manufacture method thereof, the even number of metal electrodes is arranged on the surface of the solid state electrolyte tube, the metal electrodes depend on the reversible disembedding of active ions in an electrode material to realize reversible driving response deformation under the function of an external low voltage, the IPMC medical catheter has active bending and guiding characteristics, has a simple structure and is convenient in operation.

Description

technical field [0001] The invention relates to the field of medical devices, in particular to an IPMC medical catheter and a preparation method thereof. Background technique [0002] Medical catheter is an active and continuous surgical tool, which can be accurately positioned during the operation, has little influence on the internal environment, and has high stability. Therefore, it is one of the most important medical tools in the diagnosis and treatment of cardiovascular and cerebrovascular diseases. Traditional medical catheters are generally long and thin flexible tubes. Because the human heart chamber and blood vessels are curved and changeable, there are many branches, and it is difficult for surgeons to precisely manipulate the catheter to reach the set target lesion area. When the catheter shuttles through the blood vessels in the human body, it cannot recognize the direction at the bifurcation of the blood vessels, nor can it turn in time to avoid obstacles. It i...

Claims

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Application Information

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IPC IPC(8): A61M25/00A61M25/14
CPCA61M25/0009A61M25/0043A61M2025/0058
Inventor 陈韦陆超
Owner SUZHOU INST OF NANO TECH & NANO BIONICS CHINESE ACEDEMY OF SCI
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