05133733 is referenced by 404 patents and cites 8 patents.

In a collapsible filter for introduction into a blood vessel of a patient and of the kind comprising a number of legs (1-4) diverging from an apical hub (5) and each having a reversely turned hook (1b-4b) at its distal end with respect to said hub (5), each leg comprises a central element (1a-4a), bent into a smooth quasi-half sinusoidal form, and two substantially symmetrical curved side elements (1c-4c, 1d-4d) extending on either side of the central element (1a-4a). The filter may as whole may be unfolded from a collapsed insertion condition in which the central and side elements of all legs (1-4) forms a narrow bundle for arrangement in a catheter like insertion instrument into a tulip like filter configuration with the side elements (1c-4c, 1d-4d) interposed between the central elements (1a-4a) of the legs.

Title
Collapsible filter for introduction in a blood vessel of a patient
Application Number
7/606588
Publication Number
5133733
Application Date
October 31, 1990
Publication Date
July 28, 1992
Inventor
Rolf W Gunther
Aachen
DE
Erik Rasmussen
Soborg
DK
Agent
Woodard Emhardt Naughton Moriarty & McNett
Assignee
William Cook Europe
DK
IPC
A61B 17/00
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