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Atrial septostomy device and atrial septostomy system

A technology of atrial septum and stoma, applied in the field of medical devices, can solve problems such as loss of shunt function, tissue shedding, device shedding, etc., and achieve the effects of avoiding device falling off, increasing the heating range, and reducing incomplete ablation

Pending Publication Date: 2020-05-19
HANGZHOU NOYA MEDTECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The above-mentioned technology has the following defects: the implant used for atrial shunt leaves a device in the perforation, which easily leads to thrombus formation, or the device falls off to form an embolism
In addition, the channel closure loses the shunt effect due to the endothelial attachment can cause the opening of the device to be blocked
In addition, there is a high risk of cutting intracardiac tissue by mechanical or high-frequency electrocautery during the operation, such as loosening of the intraoperative grasping device during surgery or during recovery, which may cause the cut tissue to fall off and be damaged. embolism
In addition, if the grasping device becomes loose during the cutting process, other myocardial tissue can easily be damaged

Method used

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  • Atrial septostomy device and atrial septostomy system
  • Atrial septostomy device and atrial septostomy system
  • Atrial septostomy device and atrial septostomy system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0076] Example 1, such as Figure 1-3 As shown, an atrial septostomy device 100 includes a support part 110 that passes through the atrial septum and radially expands the atrial septal tissue to form a perforation, an extension part 120 connecting the support part 110, and an ablation part 130; The portion 120 includes a compensating extension 120a for extending the length of the support portion 110 and / or a positioning extension 120b for positioning the support portion 110 . The ablation part 130 includes at least two sets of ablation elements 130a, 130b for ablation of atrial septal tissue, which are electrically connected to the ablation power supply on the support part 110 or / and the extension part. Wherein, the compensation extension part 120a is arranged in the axial direction of the support part 110, and the positioning extension part 120b extends outward from the support part 110 and presses against the interatrial septal tissue; the ablation element 130a arranged on t...

Embodiment 2

[0105] Example 2, such as Figure 4As shown, this embodiment is improved on the basis of Embodiment 1.

[0106] An atrial septostomy device 100 , comprising a support part 110 that passes through the atrial septum and expands radially to spread the atrial septal tissue to form a perforation, and an extension part 120 connected to the support part 110 .

[0107] The difference between this embodiment and Embodiment 1 is: the extension part 120 in this embodiment includes two positioning extension parts 120b for positioning the support part 110; A positioning extension part 120b is provided respectively, and a set of ablation elements 130a and 130b for ablation of interatrial septal tissue are provided on the support part 110 and the extension part 120 respectively.

[0108] Such as Figure 4 As shown, in this embodiment, both the support part 110 and the positioning extension part 120b are mesh structures formed by weaving metal wires, and the support part 110 and the positio...

Embodiment 3

[0122] Embodiment 3, this embodiment is improved on the basis of Embodiment 2.

[0123] Such as Figure 5-7 As shown, an atrial septostomy device 100 includes a support part 110 that passes through the atrial septum and radially expands to spread the atrial septal tissue to form a perforation, and an extension part 120 that connects the support part 110 . The most important difference from the structure of embodiment 2 is that no thrombus arresting mechanism is provided.

[0124] Such as Figure 5 As shown, another different structure is: the supporting part 110 is a drum-shaped structure formed by a concave surface of revolution of the generatrix, and the extending part 120 includes two positioning extending parts 120b for positioning the supporting part 110 . The two positioning extensions 120b are respectively located at the distal end and the proximal end of the support portion 110 . Both the support part 110 and the positioning extension part 120b in this embodiment ar...

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PUM

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Abstract

The invention discloses an atrial septostomy device and an atrial septostomy system. The ostomy device includes a supporting portion, and an extension portion and an ablation portion connected to thesupporting portion; the extension portion includes a compensation extension portion for extending the length of the supporting portion and / or a positioning extension portion for positioning the supporting portion; and the ablation portion includes at least two sets of ablation members which are arranged on the supporting portion and / or the extension portion and electrically communicate with an ablation power source for ablation of atrial septal tissue, wherein the ablation member arranged on the supporting portion are arranged in a circle around the periphery of the supporting portion, and theablation members arranged on the extension portion are located around perforated holes and are attached to the atrial septal tissue after being implanted. The atrial septostomy system includes at least the atrial septostomy device and electro-conductive connectors. The device and system provided by the invention are recyclable, do not need to cut tissue, and do not easily form an embolism.

Description

technical field [0001] The invention belongs to the technical field of medical devices, and relates to a percutaneously inserted atrial septostomy instrument, in particular to an atrial septostomy device and an atrial septostomy system. Background technique [0002] Heart failure (heart failure for short), is a complex clinical syndrome of impaired ventricular filling or ejection due to any structural or functional abnormality of the heart, the main clinical manifestations of which are dyspnea and fatigue (limited exercise tolerance), and Fluid retention (pulmonary congestion and peripheral edema). Heart failure is the severe and terminal stage of various heart diseases, with a high incidence rate, and is one of the most important cardiovascular diseases today. According to the location of heart failure, it can be divided into left heart failure, right heart failure and whole heart failure. [0003] Heart failure is a serious disease with high morbidity and mortality. The...

Claims

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Application Information

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IPC IPC(8): A61B18/12A61F2/91A61B18/14
CPCA61B18/12A61B18/14A61B2018/00351A61B2018/00595A61B2018/1253A61B2018/126A61B2018/1407A61F2/91
Inventor 王永胜吴俊飞董元博王坤
Owner HANGZHOU NOYA MEDTECH CO LTD
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