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Left auricle plugging device and transport system

A occlusion device and delivery system technology, applied in the field of medical devices, can solve the problems of puncturing the left atrial appendage, wear of the left atrial appendage and pericardium, complex anatomical structure of the left atrial appendage, etc., to achieve convenient operation, avoid wear, and be conducive to accuracy and safety release effect

Active Publication Date: 2013-05-15
APT MEDICAL HUNAN INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, percutaneous left atrial appendage occlusion is to place an occluder into the left atrial appendage through catheter intervention, which has considerable limitations: the anatomical structure of the left atrial appendage is complex, with different shapes and depths, and most occluders cannot fully adapt The anatomical structure of the left atrial appendage is difficult to achieve stable fixation; the opening and internal shape of the left atrial appendage is irregular, and the surface is uneven. The occluder membrane can form many pit-like gaps at the opening of the left atrial appendage, making it difficult to completely block the mouth of the left atrial appendage , the ideal occlusion effect cannot be achieved; at the same time, in the existing products, the anchor thorns are soft and difficult to penetrate into the wall of the left atrial appendage, and stable fixation cannot be achieved, or the hard anchor thorns have sufficient puncture force, but It will hinder the recovery, repositioning and replacement of the occluder, and even puncture the left atrial appendage; in addition, the occluder is in the left atrial appendage, and its supporting force will expand the left atrial appendage, causing wear between the left atrial appendage and the pericardium

Method used

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  • Left auricle plugging device and transport system
  • Left auricle plugging device and transport system
  • Left auricle plugging device and transport system

Examples

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Effect test

Embodiment 1

[0061] Example 1, a stent with an outer diameter of 4.0 mm and a wall thickness of 0.2 mm made of a nickel-titanium alloy tube with a diameter of 15 mm, which is in the shape of a regular hexagonal quincunx after complete release, and an occluder with a diameter of the proximal disc of 25 mm , The outer diameter of the delivery system is 4mm, and the effective length is 80cm.

[0062] For the animal experiment, a Beagle dog with a body weight of about 17 kg was selected, and the femoral vein was punctured. Under X-ray monitoring, after the atrial septum is punctured with an atrial septal puncture needle, a guide wire is fed along the atrial septal puncture sheath into the left atrial appendage, and the atrial septal puncture sheath is withdrawn. Send the 12F, 60cm long sheath combination into the left atrial appendage along the guide wire, withdraw the expansion tube, and leave the long sheath and guide wire in the left atrial appendage. Send the stent system along the guide ...

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Abstract

The invention discloses a left auricle plugging device and a transport system. The left auricle plugging device comprises a stent and a plugging device body. Firstly, the stent is implanted and fixed on the left auricle inlet position, the double-tray-shaped plugging device body is released on the stent for plugging a left auricle, and therefore the problem of cerebral apoplexy caused by left auricle thrombus because of atrial fibrillation can be solved. The left auricle plugging device is provided with the self-expandable nitinol stent, the stent is firmly fixed on the left auricle inlet position by depending on anchoring thorns, and then the appropriate plugging device body is released on the stent. The transport system transports the left auricle plugging device to the left auricle position. Compared with the prior art, the stent is firstly fixed on the left auricle inlet position, then the double-tray-shaped plugging device body is released on the stent, and therefore release accuracy and implanting stability of the plugging device body are improved, and the plugging device body has selectivity. After release, the stent and the the plugging device body can be recovered to a catheter for relocation or replacement.

Description

technical field [0001] The invention relates to the technical field of medical devices, more specifically, a left atrial appendage occlusion device and a delivery system. Background technique [0002] Stroke is a major complication of disability and death in patients with atrial fibrillation (AF). Epidemiological data show that about 15 million people worldwide suffer from stroke every year, of which 15% to 20% are attributed to atrial fibrillation. Studies have shown that 60% of patients with rheumatic heart disease and atrial fibrillation have cardiogenic thrombus from the left atrial appendage, while this proportion is >90% in patients with non-valvular atrial fibrillation. Therefore, people pay more and more attention to the research on embolism complications of atrial fibrillation, and how to prevent and treat the occurrence of stroke in atrial fibrillation has important clinical significance. [0003] At present, there are three methods for the treatment of atrial...

Claims

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Application Information

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IPC IPC(8): A61B17/12A61L31/02
CPCA61B17/12122A61B17/12172
Inventor 吴书林邱宇晨成正辉肖相龙
Owner APT MEDICAL HUNAN INC
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