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Stopper for congenital heart structural defect, its manufacturing method

A heart structure and occluder technology, which is applied to the device of human tubular structure, medical science, blood vessels, etc., can solve the problems of occluder delivery and other problems, and achieve the effects of reasonable spacing, strong support, and convenient placement.

Active Publication Date: 2009-06-10
龚善石 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The occluder has high hardness and strong elasticity, which is conducive to fixation, but the high hardness is not conducive to the delivery of the occluder to the ventricular septal defect and atrial septal defect through the catheter. If the selected size and model are not suitable, it is also not conducive to withdrawing from the body

Method used

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  • Stopper for congenital heart structural defect, its manufacturing method
  • Stopper for congenital heart structural defect, its manufacturing method
  • Stopper for congenital heart structural defect, its manufacturing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0116] The diameter of the secundum atrial septal defect is 15mm, and its edge is more than 5mm away from the top of the atrium, the mitral valve, the tricuspid valve, and the opening of the pulmonary vein. Use an atrial septal defect occluder with a waist diameter D = 15mm. The diameter of the disc on the left atrium side of the occluder is 29 mm, and the diameter of the disc on the right atrium side is 26 mm.

[0117] as attached Figure 1-4 As shown, the embodiment of the present invention provides an atrial septal defect occluder for congenital heart disease, which is composed of a nickel-titanium alloy wire stent 1 and a polyester fiber membrane 2 .

[0118] The atrial septal defect occluder provided by the present invention is composed of a superelastic nickel-titanium alloy wire stent 1 and a polyester fiber membrane 2; wherein, the nickel-titanium alloy wire is the occluder stent 1; the polyester fiber The membrane 2 is lined in the middle of the occluder stent 1; on...

Embodiment 2

[0145] Perimembranous ventricular septal defect, the diameter of the defect is 5 mm, and the distance from the upper edge of the defect to the aortic valve and tricuspid valve is 3 mm. A symmetrical ventricular septal defect occluder with a waist diameter of D = 6 mm was selected. The diameter of the discs on the left and right sides of the occluder is 10mm.

[0146] as attached Figure 5 As shown in -8, the embodiment of the present invention provides an occluder for cardiac ventricular septal defect, which is composed of a nickel-titanium alloy wire stent 1 and a polyester fiber membrane 2. Wherein, the nickel-titanium alloy wire is the occluder stent 1; the polyester fiber membrane 2 is lined in the middle of the occluder stent 1 to block blood flow; the occluder stent 1 There is a nickel-titanium alloy wire at one end to form the connecting ring 3b, which is used to connect with the delivery device 30. Wherein, 21 is the aorta, and 22 is the pulmonary artery, and the oc...

Embodiment 3

[0177] Perimembranous ventricular septal defect, defect diameter 4mm, defect upper edge 2mm from the aortic valve, 3mm from the tricuspid valve. An asymmetric ventricular septal defect occluder with a waist diameter of D = 5 mm was selected. The upper edge of the disc on the left side of the occluder is 0.5mm larger than the waist, and the lower edge is 5.5mm larger than the waist.

[0178] as attached Figure 9 As shown in -12, a novel asymmetric occluder for ventricular septal defect provided by the embodiment of the present invention, the stent 1 braided by nickel-titanium alloy wire mainly includes the left ventricle of the asymmetric occluder facing each other The disc 5c and the right ventricle disc 7c of the occluder, the waist 4c of the occluder connecting the left ventricle disc 5c of the above-mentioned occluder and the right ventricle disc 7c of the occluder, and the occluder at one end There are nickel-titanium alloy wires to form the connecting ring 3 , which is...

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Abstract

The invention relates to a plugging device for congenital heart structural defection. The current treatment to congenital heart attack interventricular septum and atrial septal defect is microtrauma-inserted method, so the invention provides a plugging device for congenital heart structural defection. The said plugging device comprises metallic braid frame and built-in obstruct brood which is formed from fibre materials, wherein, the said metallic braid frame are all formed from braiding metal wire and provided with presetting expansion appearance. The shape of the said plugging device can blanket the heart structural abnormality defection. The invention uses wire braid technology to make the collar plate of the left atrial and the chamber side, and makes the collar plate neat, and avoids the uneven of the disc caused by the use of fixing screw in the current use of plugging device. The invention is all braided with nickel tantalum carbide in the left, right atrium cordis and chamber side. The surface is burnishing and processes some invagination. The said things are suitable for the forming of epithelium after the plugging device is implanted.

Description

technical field [0001] The invention relates to an intravascular medical instrument for treating certain diseases, in particular to an occluder for congenital heart structural defect and its fabrication method. Background technique [0002] Congenital heart disease Ventricular septal defect, or atrial septal defect, is a common congenital heart disease characterized by the failure of the septum between the left and right atria and the left and right ventricles to close normally after birth. Since the pressure of the left atrium and left ventricle is higher than that of the right atrium and right ventricle, under pressure, the blood on the left side is shunted to the right atrium or right ventricle through atrial septal defect or ventricular septal defect, resulting in increased burden on the right heart system, Cause right ventricular hypertrophy, increased blood volume in the pulmonary circulation, eventually can cause pulmonary hypertension, arrhythmia and heart failure. ...

Claims

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Application Information

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IPC IPC(8): A61F2/02A61F2/06A61B17/00
Inventor 秦永文龚善石
Owner 龚善石
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