Implant for influencing the blood flow in arteriovenous defects

A technology for arteriovenous malformation and blood flow, applied in the direction of blood vessels, braids, devices of human tubular structures, etc., can solve the problems of weakening the characteristics and hazards of implants to prevent trauma, and achieve the effect of small overall implant diameter

Active Publication Date: 2013-07-10
PHENOX
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] However, all of these implants suffer from the problem that the proximal filament ends sometimes do not fully relax towards the vessel wall when the implant is released
Therefore, this even compromises and weakens the trauma-resistant properties of the implant

Method used

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  • Implant for influencing the blood flow in arteriovenous defects
  • Implant for influencing the blood flow in arteriovenous defects
  • Implant for influencing the blood flow in arteriovenous defects

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0084] figure 1 The braided structure of the implant 1 according to the invention is shown, which consists of filaments 2 entangled with each other. In the illustrated embodiment, the individual filaments intersect at an angle of approximately 120°, with the open side of the angle pointing towards the open end of the braid. The illustration shows the braid adopting a slightly stretched / elongated state, ie a reduced diameter.

[0085] The angle Θ represents the braid angle relative to the longitudinal axis, which can reach 80° in the untensioned condition and at nominal diameter. When the braid is in an elongated position inside the catheter, the angle Θ can be reduced to about 7°.

[0086] It will be appreciated that the nominal diameter of the braid will match the lumen of the target vessel at the site being treated.

[0087] Braids are produced in endless braided structures by conventional braiding machines. Braiding takes place on mandrels whose outer dimensions correspon...

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Abstract

The invention relates to an implant (1) for blood vessels, in particular for influencing the blood flow in the area of arteriovenous defects, with a wall made up of individual filaments (2), which are brought together to form a substantially tubular mesh that extends in an axial direction from a proximal end to a distal end, wherein the individual filaments (2) cross one another and form intersections (3) with one another, wherein the implant (1) is deformable in such a way that, in an insertion catheter, it adopts a shape with a reduced diameter and, at the site of implantation, expands to adapt to the diameter of the blood vessel, wherein the filament ends are in each case brought together at least in pairs at the proximal and/or distal end of the mesh and are permanently interconnected, wherein the interconnected filament ends are shaped to be atraumatic,; and wherein the filaments (2) crossing one another at the intersections (3) lying distally from the filament ends are connected directly or indirectly to one another at the proximal end (10) of the implant (1). This ensures that the implant (1), after release, also expands at the proximal end as far as the vessel walls, and the filament ends do not protrude into the vessel lumen.

Description

technical field [0001] The present invention relates to an implant for blood vessels, in particular for influencing blood flow in the region of an arteriovenous malformation, said implant having a wall composed of individual filaments formed substantially in a shaft a tubular braid extending upwardly from a proximal end to a distal end, wherein the individual filaments intersect each other and form intersection points, and wherein the implant is deformable in such a way that when received in an insertion catheter, the implant The implant is shaped so that its diameter is reduced and can be adapted to expand the diameter of the blood vessel at the implantation site, and wherein the filament ends at the proximal and / or distal ends of the braid are at least in pairs each brought together and permanently attached to each other connected, and the filament ends connected to each other are shaped so as not to cause trauma. Implants should be used in particular to influence blood flo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/12A61F2/90A61F2/95
CPCA61F2/90A61F2/95A61F2002/823A61F2002/9665A61F2002/9505A61F2220/005A61F2220/0058A61F2250/0043D04C1/06D10B2509/06A61F2/06A61F2/07
Inventor 曼纽尔·施奈德S·罗拉C·阿保塔R·汉内斯H·蒙斯塔特
Owner PHENOX
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