Spring ring and anti-unwinding part thereof

A spring coil and unwinding technology, applied in the field of medical devices, can solve problems such as difficulty in realizing spring coils, and achieve the effects of meeting different softness requirements, being easy to turn over, and improving packing density.

Pending Publication Date: 2020-12-29
MICROPORT NEUROTECH SHANGHAI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the existing spring coil products, the purpose of adjusting the softness of the implanted coil is achieved by processing the embolic spring part, such as changing the softness of the spring wire itself, but only by treating the embolic spring part It is difficult to achieve the state effect of "hard in the middle and soft at both ends" of the coil in the process to adjust the softness of the implanted coil

Method used

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  • Spring ring and anti-unwinding part thereof
  • Spring ring and anti-unwinding part thereof
  • Spring ring and anti-unwinding part thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Please refer to figure 1 , the present embodiment provides an anti-untwisting component 2 for a spring coil, the anti-untwisting component 2 has two end portions 2a, 2c and an intermediate portion extending between the two end portions 2a, 2c 2b. The anti-untwisting component 2 includes at least two wires (also called wires) to form the two end portions 2a, 2c and the middle portion 2b, and all parts located at the end portions 2a, 2c The structure formed by the wires is different from the structure formed by the wires located in the middle part 2b. Each strand of wire extends from one end 2a of the anti-untwisting part 2 to the other end 2c in the axial direction of the anti-untwisting part 2, thereby making the number of wire strands in the middle part 2b and the two ends 2a, 2c has an equal number of wire strands.

[0035] The anti-untwisting member 2 of this embodiment is divided into an end-parallel section 22 constituting the two end portions 2a, 2c in its axia...

Embodiment 2

[0045] Please refer to Figure 2A , the present embodiment provides an anti-untwisting component 2 for a spring coil, the anti-untwisting component 2 has two end portions 2a, 2c and an intermediate portion extending between the two end portions 2a, 2c 2b. The anti-untwisting component 2 comprises at least two strands of wire to form the two end portions 2a, 2c and the middle portion 2b, and the wires at the end portions 2a, 2c form different structures The structure formed by the wire material in the middle part 2b. Each strand of wire extends from one end 2a of the anti-untwisting part 2 in the axial direction of the anti-untwisting part 2 to the other end 2c, whereby the number of wire strands in the middle part 2b and the respective ends 2a, 2c The number of wire strands is equal.

[0046] The difference between the anti-untwisting component 2 of this embodiment and the anti-untwisting component of Embodiment 1 is that the middle part 2b includes a plurality of braided s...

Embodiment 3

[0054] Please refer to image 3 , the present embodiment provides an anti-untwisting part 2 for a spring coil, said anti-untwisting part 2 having two end parts 2a, 2c and an intermediate part extending between the two said end parts 2a, 2c 2b. The anti-untwisting component 2 comprises at least two strands of wire to form the two end portions 2a, 2c and the middle portion 2b, and the wires at the end portions 2a, 2c form different structures The structure formed by the wire material in the middle part 2b. Wherein each strand of wire extends from one end 2a to the other end 2c of the anti-untwisting component 2, so that the number of wire strands in the middle portion 2b is equal to the number of wire strands in each end 2a, 2c.

[0055] The difference between the anti-untwisting component 2 of the present embodiment and the anti-untwisting component of the first embodiment is that the middle part 2b includes a plurality of continuously arranged braided segments with different...

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PUM

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Abstract

The invention provides a spring ring and an anti-unwinding part thereof. The anti-unwinding part is characterized in that the rigidity of the end part is smaller than the rigidity of the middle part,so that the effect of "hard at the middle and soft at the two ends" is realized on the premise of achieving anti-unwinding effect. The spring ring provided by the invention comprises the anti-unwinding part so that the spring ring is endowed with a softness state that is also "hard at the middle and soft at the two ends"; and thus, requirements on the softness of the different parts of the springring during embolism can be met.

Description

technical field [0001] The invention relates to the technical field of medical instruments, in particular to a spring coil and an anti-unrotation component thereof. Background technique [0002] With the continuous improvement of people's living standards, there are more and more patients with cerebral aneurysms. The methods for the treatment of cerebral aneurysms are mainly divided into surgical clipping and endovascular interventional therapy. Due to the high risk of surgery, vascular interventional treatment of cerebral aneurysms has been increasingly recognized by doctors and patients in recent years. At present, vascular interventional therapy mainly adopts embolization therapy of coils. Several coils are implanted into the aneurysm to change the direction of blood flow and finally heal the aneurysm. [0003] Among the existing coil products, most of the coil structures implanted in the human body are composed of three parts: an embolism spring, a distal round cap and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/12
CPCA61B17/12113A61B17/12145A61B2017/00831
Inventor 魏凌轩查序郭远益彭云飞
Owner MICROPORT NEUROTECH SHANGHAI
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