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A bronchial thermoplasty catheter

A bronchial and thermoforming technology, applied in the field of medical devices, can solve the problems affecting the surgical treatment effect, small bending angle of the catheter, small working surface of the sub-needle, etc., and achieve excellent processing performance, increased flexibility, and precise dimensional stability. Effect

Inactive Publication Date: 2016-10-12
上海安臻医疗科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The bronchial thermoforming catheters of the Alair series products are prone to deformation of the sub-needle during use, which affects the service life and the effect of surgical treatment, and cannot act on the airway with a diameter of less than 3mm. The working surface of the sub-needle is small, and the catheter can be adjusted. The bending angle is small

Method used

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  • A bronchial thermoplasty catheter
  • A bronchial thermoplasty catheter
  • A bronchial thermoplasty catheter

Examples

Experimental program
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Effect test

Embodiment 1

[0040] like Figure 1-3 As shown, the components and connection relationships of the bronchial thermoforming catheter in this embodiment are the same as described above. Here, only the above-mentioned uncertain specific parameters are defined in detail, so as to understand the specific situation of the bronchial thermoforming catheter involved in the present invention used for the performance comparison test. The material of the RF sub-needle is stainless steel. There are a total of 4 working needles 2, figure 1 Only two worker pins 2 are shown for the sectional view. The length of the working sub-needle 2 is 30±0.1mm, the width is 0.36mm, and the thickness is 0.1mm. The diameter of the radio frequency sub-needle 3 is 0.25±0.05mm. The uncoated length of the working sub-needle 2 is 5.5±0.5mm. The wall thickness of the film is 0.01±0.005mm, and the film is a PET heat shrinkable sleeve. The working diameter of the working end is in the range of 1.5-13mm. The length of the ...

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Abstract

The invention provides a bronchial thermoplasty catheter comprising a working end, an outer sleeve tube and a handle. The working end comprises an end cap, working sub-needles, a support base and a radio frequency sub-needle. One end of each working sub-needle and one end of the radio frequency sub-needle are fixed to the end cap; the other end of each working sub-needle is fixed to the support base. The other end of the radio frequency sub-needle is connected with the handle after passing through the support base. The radio frequency sub-needle can slide on the support base. The two ends of each working sub-needle are electrically connected with the radio frequency sub-needle. The number of the working sub-needles is 3-6 and the radio frequency sub-needle is surrounded by the working sub-needles. The working sub-needles are made of nickel-titanium alloy and the radio frequency sub-needle is made of stainless steel or copper; the outer sleeve tube is a three-cavity tube. The sub-needles are not liable to deform, and the adjustable bending angle of the catheter is larger; the catheter is simple in working principle and convenient to operate.

Description

technical field [0001] The invention relates to a medical device, in particular to a bronchial thermoforming catheter. Background technique [0002] Radio frequency refers to radio frequency, but it does not belong to the division of frequency bands in radio communication. Because the radiation performance in such a frequency range is very low, it is rarely used in communication equipment, and the main effect on living organisms is thermal effect. When the current frequency of the radio frequency reaches a certain value (>100kHz), it will cause the movement of charged ions in the tissue, that is, frictional heat generation (60-100℃). The commonly used frequency of radiofrequency ablation equipment is 200-500kHz, and the output power is determined according to different ablation tissues, and is generally about 20W for the bronchus. [0003] Bronchial thermoplasty is an innovative asthma treatment technique that uses radiofrequency energy (or heat) to thin the proliferatin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B18/12
CPCA61B18/12A61B2018/00541A61B2018/00595
Inventor 秦杰汪虔孔凡斌何俊德
Owner 上海安臻医疗科技有限公司
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