Left auricle occluder assembly capable of repeated contracting and releasing and intervention method thereof

A technology of occluder and components, applied in heating surgical instruments, medical science, surgery, etc., can solve problems such as uncontrollable depth and direction of barb insertion, poor anticoagulation effect, incomplete occlusion, etc., to reduce shedding Risk, high product application rate, and the effect of not easy to fall off

Active Publication Date: 2018-01-19
潘湘斌
View PDF18 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The occluder in the prior art usually sends the occluder umbrella into the opening of the left atrial appendage to completely close the opening of the left atrial appendage, and a occluder plate is designed behind the occluder umbrella to prop up the wall of the left atrial appendage, thereby fixing the occluder umbrella. For example, the prior art application number is 201610885243.7, the name is the left atrial appendage occluder, and the patent literature with the application number 201410528043.7, the name is the left atrial appendage occluder, the outer surface of the occlusion umbrella needs to have barbs, and The structure of the umbrella plate is made of metal mesh. figure 1 It is a structural schematic diagram of an occluder in the prior art, figure 1 There are many disadvantages in the structure of the auricle: 1. There are strict requirements on the shape of the auricle, and many patients have failed or incomplete closure due to irregular lobes of the auricle and insufficient depth of the auricle.
2. In order to reduce the falling off of the occluder, most of the existing occluders are designed with barbs on the occluder. After the occluder is released, the barbs are inserted into the left atrial wall to play a stabilizing role. However, due to the insertion of the barbs The depth and direction are uncontrollable, and it is easy to penetrate the atrial wall and cause pericardial effusion
3. Existing occluders use a large area of ​​nickel-titanium alloy framework to contact the flowing blood. In order to prevent thrombus, a large number of anticoagulant drugs must be used for half a year after surgery, and patients receiving left atrial appendage occlusion are precisely combined with anticoagulation. Patients with contraindications or poor anticoagulant effect

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Left auricle occluder assembly capable of repeated contracting and releasing and intervention method thereof
  • Left auricle occluder assembly capable of repeated contracting and releasing and intervention method thereof
  • Left auricle occluder assembly capable of repeated contracting and releasing and intervention method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Such as Figure 2-4 As shown, the present invention provides a replaceable left atrial appendage occluder assembly, including a stepped balloon 2 and an occluding umbrella 3, the stepped balloon and the occluding umbrella are connected and fixed on the left and right sides of the left atrial appendage, and the The left atrial appendage is squeezed in it, and the occluder umbrella has an elastic umbrella-shaped mesh structure as a whole, and a barrier diaphragm is arranged inside; The right side of the auricle covers the left atrial appendage, and it interacts with the balloon to press and fix the left atrial appendage therein. Only a metal structure with a small area on the contact side of the left atrial appendage of the occluding umbrella touches the blood, usually using nickel-titanium alloy material.

[0041] The stepped balloon 2 is a hollow structure, which can be tightened to reach the opening of the left atrial appendage through the catheter. The left atrium cont...

Embodiment 2

[0048] The connection and fixation of the stepped balloon and the occlusion umbrella in the present invention can be in various ways. Preferably, this embodiment provides an expansion connection and fixation structure.

[0049] Such as Figure 4 As shown, the step-shaped balloon is provided with a through-tube 22, and a connecting post 31 is provided on the contact side of the left atrial appendage of the occluding umbrella 3. The diameter of the connecting post is slightly larger than the inner diameter of the through-tube, and the step-shaped balloon and the occluding umbrella pass through The through-pipe and the expansion joint of the connecting column are mutually fixed.

[0050] Such as Figure 6 As shown, preferably, the filling inlet 24 can be arranged in the through-pipe, and the water injection into the stepped balloon can be regulated by the water injection hose and the water stop valve on the balloon sheath.

[0051] A groove 23 is provided on the inner wall of t...

Embodiment 3

[0054] Figure 5 It is a structural schematic diagram of the intervention process of the left atrial appendage occluder assembly of the present invention, as Figure 5 As shown, the intervention method includes the following steps:

[0055] Step 1: Send the catheter guide wire into the right atrium through the femoral vein, and place the guide wire in the left atrium after puncturing the interatrial septum. Insert the balloon sheath into the left atrium along the guide wire, exit the skin expansion tube, and send it into the pigtail catheter through the balloon sheath, adjust the direction of the catheter, put the pigtail catheter into the left atrial appendage, and insert the balloon sheath The catheter is sent into the left atrial appendage, and liquid is filled into the stepped balloon through the water injection port at the end of the balloon sheath, so that the stepped balloon completely blocks the opening of the left atrial appendage, and the filling inlet connected to ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a left auricle occluder assembly capable of repeated contracting and releasing and an intervention method thereof. The assembly comprises a step-type saccule and an occluding amplatzer, a left auricle opening plugging part of the saccule is used for completely plugging a left auricle opening, and a left atrium anchoring part of the saccule is used for being connected to theleft atrium wall in a clamped mode and preventing the occluder from moving. The occluding amplatzer is released in the pericardium, and the rod part of the occluding amplatzer is connected and fixedto the saccule, so that the left auricle is squeezed and sealed between the saccule and the occluding amplatzer. According to the left auricle occluder assembly capable of repeated contracting and releasing and the intervention method, the left auricle opening is plugged by means of the saccule, the surface of the saccule is smooth, and the saccule is coated with anticoagulant coating; various types of left auricles can be blocked by means of the occluder assembly, thrombus formation can be prevented, and it is unnecessary to use an anticoagulant drug after operation.

Description

technical field [0001] The invention belongs to the field of biomedical devices, and in particular relates to a replaceable left atrial appendage occluder assembly and an intervention method thereof. Background technique [0002] Left atrial appendage occlusion is to place the occluder in the delivery sheath and transport the occluder to the opening of the left atrial appendage through minimally invasive puncture of the interatrial septum to block the left atrial appendage, isolate the left atrium and the left atrial appendage, and avoid thrombus in the left atrial appendage Into the blood circulation, to avoid the stroke caused by atrial fibrillation and other phenomena. [0003] The occluder in the prior art usually sends the occluder umbrella into the opening of the left atrial appendage to completely close the opening of the left atrial appendage, and a occluder plate is designed behind the occluder umbrella to prop up the wall of the left atrial appendage, thereby fixin...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/12A61B18/14
CPCA61B17/12A61B18/14A61B17/12136A61B17/12031A61B17/12122A61B2017/1205A61B2017/12095A61B17/12177A61B17/12186
Inventor 潘湘斌
Owner 潘湘斌
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap