Medical self-expansion plugging device

An occluder and polymer technology, applied in medical science, surgery, etc., can solve the problem that the implantation process is not particularly smooth, and achieve the best memory performance, gentle implantation process, and high deformability

Inactive Publication Date: 2009-02-18
OCCLUTECH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, when using a medical occluder with a braid made of Nitinol, the implantation process is not particularly smooth on the patient.

Method used

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  • Medical self-expansion plugging device
  • Medical self-expansion plugging device
  • Medical self-expansion plugging device

Examples

Experimental program
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Embodiment Construction

[0149] The present invention relates to a percutaneous catheter-guided occluder for occluding abnormal gaps such as atrial septal defect (ASD, PFO), ventricular septal defect (VSD), patent ductus arteriosus defect (PDA) and the like. The present invention also provides a method of forming a medical occluder from a flat or tubular synthetic or polymeric fabric.

[0150] Both flat and tubular fabrics consist of a plurality of strands having a predetermined arrangement relative to each other. The tubular fabric has synthetic strands that are distinct from two sets of substantially parallel helical strands, wherein one set of strands has an opposite direction of rotation to the other set of strands. The fabric is also known in the industry as a tubular braid.

[0151] The braided shape is mainly used for type 2 ( Figure 14 ) and type 3 ( Figure 15 ) PFO occluder, whereby the wire / wire of the proximal curve is thermally bundled at the proximal end 2, specifically in an element...

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PUM

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Abstract

The invention relates to a medical self-expandable occlusion device for treating heart defects of a patient, especially for closing abnormal holes in the tissue. The occlusion device (1) can be inserted into the body of a patient by means of a catheter system in a minimally invasive manner. The occlusion device (1) consists of an interlaced structure (1) of thin threads, the interlaced structure (10) having a first shape during insertion of the occlusion device into the body of the patient, which shape can be previously determined, and a second shape in the implanted position of the occlusion device, which shape can be previously determined, the occlusion device in the first shape of the interlaced structure (10) being in a folded condition and in the second shape of the interlaced structure (10) being in an expanded condition. The aim of the invention is to provide an occlusion device which can be implanted in as gentle a manner possible for the patient. For this purpose, the threads of the interlaced structure (10) consist of a shape memory polymer composition so that the interlaced structure (10) is deformed under the effect of an external stimulus from a temporary shape to a permanent shape, the temporary shape being the first shape of the interlaced structure (10) and the permanent shape being the second shape of the interlaced structure (10).

Description

technical field [0001] The present invention relates to a self-expanding medical occluder for treating a cardiac defect in a patient, particularly for closing an abnormal gap in tissue, whereby the occluder is introduced into the patient's body in a minimally invasive manner using a catheter system and comprises a braid of thin wires, thereby The braid exhibits a first predeterminable shape when the occluder is inserted into the patient's body, and a second predeterminable shape in the implanted state of the occluder, so that the braid of the occluder at the One profile shape is in a folded state, and the braid is in a second profile shape in an expanded state. Background technique [0002] The principle of such occluders is known at least to some extent from medical technology. For example, an occluder for treating septal defects is known from DE 10 338 702 of 22.08.2003, which comprises a braid of thin wires or threads and which is given an appropriate profile during mold...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/00A61B17/12
CPCA61B2017/00575A61B2017/00606A61B2017/00592A61B2017/00867A61B17/0057
Inventor 汉斯－任娜·菲格拉苏姗·克里邦弗里德里希·墨桑纳罗伯特·墨桑纳罗蒂格·奥特玛
Owner OCCLUTECH GMBH
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