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Bending-adjustable catheter

A technique of catheter and bend adjustment, which is applied in the direction of catheter, guide wire, medical science, etc., can solve the problems of inability to realize two-way bend adjustment, and achieve the effect of reducing the frequency of adjusting and replacing catheters, reducing risks, and being easy to operate

Active Publication Date: 2022-07-01
LIFETECH SCIENTIFIC (SHENZHEN) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide an adjustable bend catheter, aiming to solve the problem that the adjustable bend catheter in the prior art can only realize one-way bending adjustment but cannot realize two-way bending adjustment

Method used

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Examples

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no. 2 example

[0072] As an alternative embodiment of the driving mechanism 30 , the driving mechanism 30 may also be configured in the form of using two sets of bevel gear assemblies to respectively control the first traction wire 21 and the second traction wire 22 . Specifically, in this embodiment, the driving member includes a first driving bevel gear 31a and a second driving bevel gear 31b. The first driving bevel gear 31a and the second driving bevel gear 31b are coaxially arranged, but are arranged in opposite directions. The driving bevel gear is meshed with the first driven bevel gear, and the second driving bevel gear is meshed with the second driven bevel gear. When the first driving bevel gear 31a and the second driving bevel gear 31b rotate, their rotation directions are the same, According to the steering transmission rule of the bevel gear pair, the rotation directions of the first driven bevel gear 32 and the second driven bevel gear 33 driven by the pair are also the same. T...

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Abstract

The invention is suitable for the technical field of medical apparatus and instruments, and provides an adjustable bent catheter. The sheath tube is provided with a bendable section, the first traction wire and the second traction wire are anchored on the bendable section of the sheath tube, and the driving mechanism is further arranged for pulling and releasing the first traction wire and the second traction wire; and when the driving mechanism pulls any one of the first traction wire and the second traction wire to enable the sheath tube to bend towards the side of the pulled traction wire, the other traction wire is correspondingly released, so that the bendable section of the sheath tube can be bidirectionally bent towards at least two directions of the sheath tube, and therefore, the bendable section of the sheath tube can be bidirectionally bent towards at least two directions of the sheath tube. According to the interventional therapy catheter, the requirement for interventional therapy on complex lesion positions such as blood vessel distortion and variable blood vessel opening positions can be fully met, the frequency that clinical operators need to adjust the catheter and replace the catheter for multiple times is greatly reduced, and therefore the operation is easier to operate, and meanwhile the risk caused by complications is reduced.

Description

technical field [0001] The invention belongs to the technical field of medical devices, and in particular relates to an adjustable bendable catheter. Background technique [0002] Endovascular technique is to move the catheter along the vascular lumen to the lesion location (such as coronary artery, carotid artery, celiac artery, renal artery, etc.) An emerging medical approach to invasive therapy, catheters are tools for endoluminal surgery to establish ex vivo-to-in vivo. Due to the variability and complexity of the opening positions of peripheral blood vessels at all levels, such as iliac arteries, femoral arteries, common carotid arteries, innominate trunks and coronary arteries, and aortic vessels, it is difficult to accurately locate them. [0003] At present, most of the catheter tips on the market will be pre-molded into different curved shapes according to the characteristics of the vascular path of the target lesion, such as a mountain-turning sheath, a shuttle sh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61M25/00A61M25/01
CPCA61M25/0074A61M25/0133A61M25/0136A61M25/0147A61M2210/12A61M2210/005
Inventor 关成梅刘晓颖王刚
Owner LIFETECH SCIENTIFIC (SHENZHEN) CO LTD
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