Puncture assembly suitable for atrial septum

An interatrial septum and component technology, applied in the field of medical devices, can solve the problems of inaccurate positioning, inconvenience, damage to the anatomical structure of the left atrium, etc., and achieve the effect of improving work efficiency, avoiding damage, and accurately grasping the positioning and determining the insertion position.

Pending Publication Date: 2021-08-24
蚌埠冠硕医疗科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main complications of previous atrial septal puncture and the design defects of puncture tools are: the main complications of atrial septal puncture are due to inaccurate positioning and damage to the left atrium and its adjacent anatomical structures during puncture
However, there are still some shortcomings in this solution: the puncture needle needs to be dropped in the left atrium. Since the micro-fine steel wire is used, and the thin steel wire has certain flexibility, it will be somewhat uncomfortable to pull the puncture needle completely back into the dilator when withdrawing. Convenient, unable to accurately judge the boundary (distance) between the puncture needle and the inner wall of the left atrium and surrounding tissues

Method used

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  • Puncture assembly suitable for atrial septum
  • Puncture assembly suitable for atrial septum
  • Puncture assembly suitable for atrial septum

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] see Figure 2 to Figure 8 , the present invention provides a technical solution:

[0031] A puncture assembly suitable for the interatrial septum of the heart, comprising an outer sheath 1, a dilator 2 and a puncture needle 3, the dilator 2 is sleeved in the outer sheath 1, the puncture needle 3 is sleeved in the dilator 2, the The head end of the puncture needle 3 is a puncture head 5 with a variable state. When the puncture head 5 is located in the dilator 2, the puncture head 5 is in the shape of a closed cone. The puncture head 5 of the dilator 2 is in the shape of an open blunt head. In the present invention, the head end is defined based on the external operation end being the tail end.

[0032] Specifically, the state-changeable puncture head 5 includes several forks 6 and elastic members 10, the forks 6 and the puncture needle 3 are folded and connected, and the elastic members 10 are used to provide After the head 5 breaks away from the dilator 2, the fork 6 ...

Embodiment 2

[0041] see Figure 9 to Figure 10 , which is basically the same as Example 1, with a slight difference:

[0042] The elastic member 10 is attached to the outer wall of the puncture needle 3, the tail end is connected to the outer wall of the puncture needle 3, and the head end is extended and attached to the outer wall of the fork 6 to connect with the outer wall. Part 10 is in detachable contact with the outer wall of puncture needle 3 . In this embodiment, the elastic member 10 is arranged outside the puncture needle 3. Since the puncture head 5 is in a closed cone shape, the elastic member 10 is in an elongated state and will generate tension. Therefore, when the puncture head 5 pierces the interatrial septum Breaking away from the dilator 2, the fork 6 can be opened by the generated pulling force, so that it is in the shape of a blunt head. In order to facilitate the puncture head 5, the elastic member 10 is preferably embedded in the outer wall, and its outer surface is...

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Abstract

The invention provides a puncture assembly suitable for atrial septum, and the assembly comprises an outer sheath, a dilator and a puncture needle; the dilator is sleeved in the outer sheath, the puncture needle is sleeved in the dilator, the head end of the puncture needle is a puncture head with a variable state, the puncture head is in a closed cone shape when the puncture head is located in the dilator, the puncture head is separated from the dilator after puncturing the interatrial septum, and the puncture head is in an open blunt end shape. The puncture head part of the puncture needle extends out of the dilator, at the moment, the puncture head is in a closed (closed) state, and then the whole puncture head is conical, so that puncture is facilitated; when the puncture head punctures the interatrial septum, the puncture head is separated from the dilator, and at the moment, the fork part can be opened and is in a blunt end shape due to the loss of the constraint of the check block, so the puncture state can be changed immediately; the puncture head is not enough to puncture the atrium wall, tissues such as the heart cannot be punctured, and the inner wall of the left atrium is prevented from being damaged.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a puncture assembly suitable for the interatrial septum of the heart. Background technique [0002] Currently, a variety of diagnostic and therapeutic techniques in interventional cardiology are used to achieve interatrial septal puncture. The main complications of previous atrial septal puncture and the design defects of puncture tools are as follows: the main complications of atrial septal puncture occurred because of inaccurate positioning and damage to the left atrium and its adjacent anatomical structures during puncture. Due to inaccurate positioning, it can cause mispuncture of the posterior wall of the right atrium and aorta, and at the same time, due to the design defect of the puncture tool itself, the occurrence of left atrium injury is also increased (see figure 1 ). Left atrium injury caused by difficult puncture: when the atrial septum is punctured, it is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/34
CPCA61B17/34A61B17/3403A61B17/3415A61B17/3417A61B17/3494A61B2017/3413A61B2017/3454
Inventor 汤文凯
Owner 蚌埠冠硕医疗科技有限公司
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