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Cardiac ventricular septal defect occluder

A ventricular septal defect and occluder technology, which is applied in the field of medical devices, can solve the problem that the cardiac ventricular septal occluder is not easy to retract, and achieves improved safety and success rate, good occlusion effect, and good self-neutrality. Effect

Inactive Publication Date: 2011-12-07
赵菁
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the defect that the existing heart ventricular septal occluder is not easy to recover, the present invention provides a heart ventricular septal occluder that is easy to recover

Method used

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  • Cardiac ventricular septal defect occluder
  • Cardiac ventricular septal defect occluder
  • Cardiac ventricular septal defect occluder

Examples

Experimental program
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Embodiment Construction

[0019] In the attached drawing, the main part of the heart ventricular septal defect occluder is made into an elastic net with good shape memory function, which is drawn into a long strip by external force, and immediately restores the original preset shape after the external force is removed. A layer of polyester sealing film (9) is provided, and the occluder can be put into the delivery sheath (11) after being shrunk into a strip shape. The occluder is braided with nickel-titanium alloy wire and then formed and heat-treated. There is a circular left disk (1) at the front of the expanded disk (1), and a sealing film is sewn inside the left disk (1) with medical sutures. (9), there is a circular right disc (2) at the rear end of the occluder, and the outer contour diameter of the waist (3) between the left disc (1) and the right disc (2) is smaller than that of the left disc (1) and the right disc (2) 4~12 millimeters, there is a sealing head (7) that alloy wire is gathered an...

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Abstract

The main part of the cardiac ventricular septal defect occluder is an elastic net with shape memory function, which is drawn into a long strip by external force, and immediately restores the preset shape after the external force is removed. There is a layer of sealing film inside the elastic net. The elastic mesh is formed and heat-treated after braiding with nickel-titanium alloy wire. After the occluder is expanded, there is a circular left disk with a sealing film inside, and a circular right disk at the rear end. The outer contour diameter of the waist between the left disk and the right disk is smaller than that of the left and right disks. 4 to 12 mm, there is a head with the alloy wire gathered and fixed at the center of the front end of the occluder, and a joint with the alloy wire gathered and fixed at the center of the rear end of the occluder. The steel cable is connected; the diameter of the nickel-titanium alloy wire on the rear end surface is gradually thinned, and the diameter of the alloy wire near the center is the thinnest and bent into an arc shape, and its diameter is 50% thinner than that of other parts of the alloy wire. The heat treatment hardness is also lower than other parts.

Description

(1) Technical field [0001] The invention relates to the technical field of medical devices, in particular to a cardiac ventricular septal defect occluder for treating congenital heart disease. (2) Background technology [0002] Congenital heart disease Atrial septal defect and ventricular septal defect are common congenital heart diseases. The characteristic of atrial septal defect is that the interval between the left and right atria fails to close normally, and blood flows between the left atrium and the right atrium; Septal defects are characterized by the failure of the septum between the left and right ventricles to close properly, allowing blood to flow between the left and right ventricles. Because the pressure in the left atrium is higher than that in the right atrium, part of the blood from the left atrium is shunted to the right atrium through the atrial septal defect. Due to the leakage of blood, the burden on the right heart system increases, causing right ventr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B17/00A61F2/02
Inventor 赵菁
Owner 赵菁
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