Pull wire locking catheter for valve repair

A pulling wire and catheter technology, applied in the field of medical devices, can solve the problems of long implantation path and complicated operation, and achieve the effect of simplifying the operation

Inactive Publication Date: 2019-03-22
SHANGHAI SHAPE MEMORY ALLOY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In mitral regurgitation, mitral regurgitation interventional treatment techniques can be divided into two categories: one is transcatheter mitral valve repair, such as MitraClip, PASCAL, ValveClam, Cardioband, Mitralalign, NeoChord, etc., and the other is transcatheter mitral valve repair. It is transcatheter mitral valve implantation. At present, repair is the main treatment method, but there are still some problems in the current technology. For example, MitralClip can change the large single hole into a small double hole by clamping the front and rear leaflets of the mitral valve. hole, to achieve the purpose of treatment, but the implantation path is too far, the operation is too complicated, and needs to be perfected

Method used

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  • Pull wire locking catheter for valve repair
  • Pull wire locking catheter for valve repair
  • Pull wire locking catheter for valve repair

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] See figure 1 , 2 , 4, 10, 11, Figure 11 Schematic illustration of transcatheter artificial chord implantation.

[0044] First, the artificial chord 3 and the apical anchor 4 are implanted into the body through the delivery sheath 6, wherein the artificial chord 3 is fixed at the prolapsed valve leaflet 5, and the apical anchor 4 is fixed between the papillary muscles. The wire-locking catheter connects the apical anchor 4 and the artificial chord, where the artificial chord is the puller wire 3, and the specific operation is as follows: first, the puller wire is locked to the catheter along the connecting wire between the puller wire 3 and the apical anchor 4 Send it near the apical anchor 4, and then pull the pulling wire 3 through the pulling button 13 under the guidance of ultrasound or radiography. When it is judged that the length of the pulling wire 3 is appropriate, rotate the tail end of the handle 1 to fix the thread. The plug 22 is rotated to a locked stat...

Embodiment 2

[0046] See figure 1 , 2 , 4, 10, 12, Figure 12 Schematic illustration of transcatheter annulus reduction.

[0047] In order to shorten the distance between the anterior valve and the posterior valve of the mitral valve, the anchors 7 are respectively implanted in the middle of the posterior valve of the mitral valve and the interatrial septum through the delivery sheath 6, and one end of the puller wire 3 is fixed on the posterior valve. On the anchor, the other end passes through the interatrial septum anchor, and the specific operation of the puller wire locking catheter is as follows: first, the puller wire locking catheter is sent into the vicinity of the apical anchor 4 along the puller wire 3, and then Under the guidance of ultrasound or radiography, the puller 3 is pulled through the puller button 13. When it is judged that the length of the puller wire 3 is appropriate, the tail end rotating part of the handle 1 is rotated, and the threaded fixing plug 22 is rotated...

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Abstract

The invention discloses a pull wire locking catheter for mitral valve repair. The pull wire locking catheter is mainly used for adjusting and locking a pull wire implanted after mitral valve regurgitation diseases, valve ring expansion and chordae tendineae rupture under ultrasound or radiography in real time, and complete reversible operation can be realized. Operation of a surgeon can be simplified, and the pull wire locking catheter has excellent therapeutic effects on mitral valve regurgitation.

Description

technical field [0001] The invention belongs to the technical field of medical devices, in particular to a pulling wire locking catheter for valve repair. Background technique [0002] With the development of society and the aging of the population, the incidence of mitral regurgitation (MR) is on the rise, and it has become a common heart valve disease. According to the pathogenesis, MR can be divided into primary (organic, 30%) and secondary (functional, 70%). According to the condition, MR can be divided into acute and chronic. Mild MR can have no clinical symptoms for a long time, and the prognosis is better. Severe MR can produce symptoms such as palpitations, chest tightness, and shortness of breath. Patients with acute severe MR are poorly tolerated and are prone to death. For chronic severe MR, the incidence of cardiovascular death and cardiovascular events in asymptomatic patients within 5 years is 14±3% and 333±3%, while those with severe heart failure (New Yor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/24A61B17/34A61B34/20
CPCA61B17/3403A61B2017/3413A61F2/2457A61F2/2466A61B34/20A61B2034/2063A61B2034/2065
Inventor 赵洋刘小建张昱昕
Owner SHANGHAI SHAPE MEMORY ALLOY
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