Kit for medical use composed of a filter and a device for placing it in the vessel
First Claim
1. A kit for medical use, comprising a filter adapted to be inserted into a vein, a flexible metal guide, a push-rod and an insertion tube, in whicha) the filter, which includes radially expandable elastic lugs each having a distal end and a proximal end, said distal ends of said lugs extending outwardly approximately in a shape of a conical corolla, said distal ends of said lugs are capable of being folded inwardly, said proximal ends of said lugs are joined at a head which has a small circular orifice of diameter D1 to receive said guide,b) the metal guide formed from a flexible wire has a cross-sectional diameter D2,c) the push-rod having a distal end is a hollow tube of internal diameter D3, and receives said guide therein,d) the insertion tube having a distal end is hollow and surrounds said push-rod, wherein said distal end of said lugs are capable of being folded inwardly and received in said distal end of said insertion tube;
- said distal end of said insertion tube having a rigid cylindrical cap of internal diameter D4, said cap having an annular internal shoulder at a distal end, which is capable of acting as a stop for said distal end of the lugs of the filter, diameters of each component being such that D4>
D3>
D1>
D2, such that when said distal ends of said lugs are folded back inside said cap, the distal end of said push rod bears against said head.
1 Assignment
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Accused Products
Abstract
A medical kit comprises: a) a filter consisting of elastic lugs deployed substantially in the form of a conical corolla emerging rearwardly from a distal head, and having a small orifice of diameter D1 at its end; b) a metal guide of outside diameter D2; c) a push rod consisting of a hollow tube having an internal opening of diameter D3; d) an insertion tube fitted at its distal end with a rigid cylindrical cap of inside diameter D4, and having an internal annular shoulder towards its proximate end capable of serving as a stop for the ends of the filter tabs. The respective dimensions of the various elements are such that D4>D3>D1>D2.
266 Citations
6 Claims
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1. A kit for medical use, comprising a filter adapted to be inserted into a vein, a flexible metal guide, a push-rod and an insertion tube, in which
a) the filter, which includes radially expandable elastic lugs each having a distal end and a proximal end, said distal ends of said lugs extending outwardly approximately in a shape of a conical corolla, said distal ends of said lugs are capable of being folded inwardly, said proximal ends of said lugs are joined at a head which has a small circular orifice of diameter D1 to receive said guide, b) the metal guide formed from a flexible wire has a cross-sectional diameter D2, c) the push-rod having a distal end is a hollow tube of internal diameter D3, and receives said guide therein, d) the insertion tube having a distal end is hollow and surrounds said push-rod, wherein said distal end of said lugs are capable of being folded inwardly and received in said distal end of said insertion tube; - said distal end of said insertion tube having a rigid cylindrical cap of internal diameter D4, said cap having an annular internal shoulder at a distal end, which is capable of acting as a stop for said distal end of the lugs of the filter, diameters of each component being such that D4>
D3>
D1>
D2, such that when said distal ends of said lugs are folded back inside said cap, the distal end of said push rod bears against said head. - View Dependent Claims (2, 3, 4, 5, 6)
- said distal end of said insertion tube having a rigid cylindrical cap of internal diameter D4, said cap having an annular internal shoulder at a distal end, which is capable of acting as a stop for said distal end of the lugs of the filter, diameters of each component being such that D4>
Specification