Anti-Pulmonary embolism filter

Details Anti-Pulmonary embolism filter Anti-Pulmonary embolism filter

1994-05-02

1996-07-02

Brittingham, Debra S.

Prosthesis (i.e., artificial body members), parts thereof, or ai

Implantable prosthesis

606158, 606200, A61F 202, A61B 1708, A61M 2900

Patent

active

055317880

ABSTRACT:
The present invention relates to an anti-pulmonary embolism filter of the pe made of a remanent spring effect resilient wire, characterized in that it is shaped into a spiral (1) having three non-touching turns (2, 3, 4) with the middle turn (3) having a diameter (d3) greater than the diameters (d2, d4) of the other two turns, and in that this diameter (d3) is selected to be close to the half-circumference of the vena cava in the zone where the filter is to be implanted so as to ensure that the function of holding the filter in place by flattening of the vena cava is optimized.

REFERENCES:
patent: 4756711 (1988-07-01), Mai et al.
patent: 4873978 (1989-10-01), Ginsburg
patent: 4957501 (1990-09-01), Lahille et al.
patent: 4994069 (1991-02-01), Ritchart et al.
patent: 5152777 (1992-10-01), Goldberg et al.

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