Self-adaptive plugging device

An occluder, self-adaptive technology, applied in medical science, surgery, ligation, etc., can solve problems such as residual shunt and deformation, and achieve the effect of improving resilience

Inactive Publication Date: 2015-12-16
SHANGHAI SHAPE MEMORY ALLOY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because the double-disc occluder is parallel, for defects with unequal width or unevenness, it may be deformed and cause residual shunt

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Such as figure 1 As shown, the adaptive occluder in this embodiment includes a first occlusion disk and a second occlusion disk used to occlude the blood flow at the defect, and the first occlusion disk is connected to a stretchable and deflectable One end connected to the waist, the other end of the stretchable and deflectable connected waist is connected to the second occlusion disk.

[0044] The first plugging disc is a nickel-titanium alloy wire braided disc 1, and the nickel-titanium alloy wire braided disc 1 includes a hollow double-layer structure braided by nickel-titanium alloy wire, and the interior of the hollow double-layer structure is One layer of high molecular flow blocking membrane 8 is sutured and fixed to block the blood flow at the defect. The cross section of the nickel-titanium alloy wire braided disk is circular, and the longitudinal section is elliptical.

[0045] The second blocking disc includes a fixed arm 2. The fixed arm 2 is laser-cut fro...

Embodiment 2

[0052] Such as figure 1 As shown, the adaptive occluder in this embodiment includes a first occlusion disk and a second occlusion disk used to occlude the blood flow at the defect, and the first occlusion disk is connected to a stretchable and deflectable One end connected to the waist, the other end of the stretchable and deflectable connected waist is connected to the second occlusion disk.

[0053] The first blocking disk includes a fixed arm 2, the fixed arm 2 is laser cut from a nickel-titanium alloy tube, there are 8 pieces in total, and the center is symmetrically distributed. The fixed arm 2 is a straight tube, and one end of the fixed arm 2 is connected to the Link waist link. The surface of the fixed arm 2 is sutured to fix the polymer blocking membrane 8 , and within a few months after implantation, its surface may also be endothelialized, and at the same time play the role of fixation and closure.

[0054] The first plugging disc is a nickel-titanium alloy wire b...

Embodiment 3

[0061] The structure of the self-adaptive occluder of this embodiment is similar to Embodiment 2, the difference is that, as Figure 12 As shown, the structure of the stretchable and deflectable connecting waist is different. In this embodiment, the stretchable and deflectable connecting waist is composed of a loop 19, and one end of the loop 19 is connected to the first One blocking disk, the other end is connected to the second blocking disk.

[0062] The usage method of the self-adaptive occluder in this embodiment is the same as that in Embodiment 1.

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Abstract

The invention provides a self-adaptive plugging device. The self-adaptive plugging device is characterized by comprising a first plugging disc and a second plugging disc which are used for plugging blood flows of coloboma positions, the first plugging disc is connected with one end of a connecting waist portion which can be stretched and deflected, and the other end of the connecting waist portion which can be stretched and deflected is connected with the second plugging disc. According to the self-adaptive plugging device, the connecting waist portion can be stretched and deflected; by means of stretching and deflection of the connecting waist portion, the functions of adjusting the length and the angle of deflection of the plugging device can be achieved; generally, certain included angles exist between aortas and pulmonary arteries, and under the action of the adjustable waist portion, the plugging discs on the two sides can be well attached to the wall faces of catheters of the aortas and the pulmonary arteries respectively, and the main performances such as the rebound resilience, the fixity and the plugging effect of the plugging device are significantly improved.

Description

technical field [0001] The invention relates to an adaptive occluder for treating congenital heart disease. Background technique [0002] Congenital heart disease (congenital heart disease for short) refers to the anatomical abnormality caused by the formation disorder or abnormal development of the heart and great blood vessels during the embryonic development period, or the channel that should be automatically closed after birth is not closed (it is normal in the fetus) situation. Congenital heart disease is the most common type of congenital malformation, accounting for about 28% of various congenital malformations. The most common CHDs include atrial septal defect (ASD), ventricular septal defect (VSD), and patent ductus arteriosus (PDA). Every year, about 150,000 to 200,000 newborns in my country suffer from congenital heart disease. The traditional treatment method is surgical thoracotomy, using patch or stitches to repair the defect, but the surgical hand does a lo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/12A61B17/00
CPCA61B17/12122A61B17/12172A61B17/12109A61B17/0057A61B17/1214A61B2017/00606A61B2017/00623A61B2017/00867
Inventor 王超杨永森陈娟钱卫东罗鹏李博蒲忠杰
Owner SHANGHAI SHAPE MEMORY ALLOY
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