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Occlusive device for treating congenital heart disease

A congenital heart disease and occlusion device technology, applied in the field of medical devices, can solve problems such as difficult to determine long-term toxic and side effects, arrhythmia, cardiac insufficiency, etc., achieve chronic damage and mechanical stimulation, and reduce metal toxic and side effects Effect

Inactive Publication Date: 2009-03-25
何健峰
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In terms of technology, the mushroom-shaped or double-disk umbrella-shaped occlusion device is easier to operate than other devices and is welcomed by clinicians. However, due to the excessive metal content and the direct contact of the metal with the body, the metal in the body It is difficult to determine the long-term toxic and side effects of the drug. Too hard metal can easily cause chronic damage to blood vessels and mechanical stimulation, resulting in long-term cardiac insufficiency, arrhythmia and other side effects. Therefore, the Amplatzer occlusion device has not been certified by the US FDA and has not been recognized by the world. It is recognized that its application is very limited

Method used

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  • Occlusive device for treating congenital heart disease
  • Occlusive device for treating congenital heart disease
  • Occlusive device for treating congenital heart disease

Examples

Experimental program
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Embodiment Construction

[0013] Figure 1 to Figure 3 It is an embodiment of the present invention used for occlusion of ventricular septal defect (VSD). The stent 1 made of a nickel-titanium alloy wire mesh with a diameter of 0.002 to 0.003 inches is in the shape of a double-disk umbrella, and the stent 1 is filled with polymer Ester fiber 2, the metal wire of stent 1 is coated with a layer of degradable biocompatible polymer material 3, the degradable biocompatible polymer material 3 in this embodiment can directly adopt the publication number CN1435438, published on It is the modified polylactic acid material provided in the Chinese Invention Patent Publication on August 13, 2003. The nickel-titanium alloy wire is used as the inner support, and its diameter is smaller than that of the metal wire of the traditional device. Under the premise of ensuring the strength of the whole support during production, the diameter of the nickel-titanium alloy wire can be pulled as small as possible, and the nicke...

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Abstract

The invention relates the congenital heart disease plugging device, comprising the bevel support 1 and polyester fibre 2. The bevel support 1 is weaved by the nickel-cemented tantalum carbide, and the diameter of 1 is between 0.002-0.003 inch, the 1 is filled with 2, and around the metal wire of 1 there is polydactyl acid, silica gel, polyurethane or other degradable consistency high polymer materials. The invention has the advantages of reducing heavy metal toxicity, low vessel chronic injury and mechanical stimulation, and safety.

Description

technical field [0001] The invention belongs to the technical field of medical devices, and in particular relates to a blocking device for treating congenital heart diseases such as patent ductus arteriosus and interventricular septum or atrial septal defect. Background technique [0002] Patent ductus arteriosus (PDA), atrial septal defect (ASD) and ventricular septal defect (VSD) are common congenital heart diseases in children, and the three account for about 80% of all congenital heart diseases. Before the 1970s, the closure mainly relied on surgical operations; in the mid-1970s, people began to design and try a new non-thoracotomy method for closing the ductus arteriosus and atrial septal defect, and achieved success. Over the past 20 years, a variety of blocking devices have been tried It has achieved great success in animal and clinical trials. There are currently five types of occlusion devices commonly used clinically at home and abroad, including Portsman, Rashkind...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61F2/02A61B17/03
Inventor 何健峰田杰王远亮罗彦凤
Owner 何健峰
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