Device implanted in a vessel with lateral legs provided with antagonistically oriented teeth
First Claim
1. A filter device adapted to be implanted into a vessel or lumen of the body, comprising a head and a plurality of legs extending from the head, free ends of said legs being rounded, and hooking means provided on each of the legs, said hooking means including at least two teeth oriented antagonistically in a longitudinal direction of the leg.
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Abstract
This invention relates to a device adapted to be implanted in a vessel, for example a filter for retaining blood clots in a vein, which comprises lateral legs abutting on the wall of the vessel. According to the invention, each leg, whose end is not sharp, is provided with at least two teeth with antagonistic inclination. They are preferably placed towards the rounded end of the leg and have divergent directions. The tooth is for example obtained by cutting out and pushing a median part of the leg, and possibly by subsequent bending thereof. The angle made by the end part of the tooth with respect to the plane of the leg is included between 0 and 30°; the tip of the tooth is at a distance of between 0.8 and 2 mm from the leg.
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Citations
7 Claims
- 1. A filter device adapted to be implanted into a vessel or lumen of the body, comprising a head and a plurality of legs extending from the head, free ends of said legs being rounded, and hooking means provided on each of the legs, said hooking means including at least two teeth oriented antagonistically in a longitudinal direction of the leg.
Specification