Anti-pulmonary embolism filter and corresponding presentation and fitting kit
First Claim
1. Anti-pulmonary embolism filter made of resilient wire having a remanent spring effect shaped into a spiral structure comprising at least one first non-planar spiral continuous with and superimposed on at least one second non-planar spiral, the first spiral having two lateral turns connected by at least one middle turn having a diameter greater than each of the lateral turns, and the second spiral having turns having diameters no greater than the middle turn of the first spiral, the first and second spirals each having two ends and being joined together at least at one of their respective ends.
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Accused Products
Abstract
The invention describes a pulmonary embolism prevention filter of the type made from an elastic wire with remanent spring effect, characterized int hat it comprises at least two wires (100, 200), each spirally shaped. The said two wires (100, 200) have at least substantially the same length and are connected in the vicinity of their ends.
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Citations
63 Claims
- 1. Anti-pulmonary embolism filter made of resilient wire having a remanent spring effect shaped into a spiral structure comprising at least one first non-planar spiral continuous with and superimposed on at least one second non-planar spiral, the first spiral having two lateral turns connected by at least one middle turn having a diameter greater than each of the lateral turns, and the second spiral having turns having diameters no greater than the middle turn of the first spiral, the first and second spirals each having two ends and being joined together at least at one of their respective ends.
- 50. Anti-embolism filter for implanting in a vena cava so as to retain any clot migrating with the blood before said clot penetrates into the heart, to avoid pulmonary embolism while allowing free flowing of the blood in the vena cava, said filter being made of resilient wire having a remanent spring effect shaped into a spiral structure comprising at least one first non-planar spiral continuous with and superimposed on at least one second non-planar spiral, the first spiral having two lateral turns connected by at least one middle turn having a diameter greater than 16 mm and greater than each of the lateral turns, in order to ensure that the filter is optimally held in place by flattening of the vena cava when said filter is implanted in said vena cava with its axis perpendicular to the axis of said vena cava, and the second spiral having turns having diameters no greater than the middle turn of the first spiral, the first and the second spirals each having two ends and being joined at least at one of their respective ends.
- 55. Anti-pulmonary embolism filter made of a resilient wire having a remanent spring effect folded on itself substantially half-way along and comprising at least one first non-planar spiral continuous with and superimposed on at least one second non-planar spiral, the first spiral having two lateral turns connected by at least one middle turn having a diameter greater than each of the lateral turns, and the second spiral having turns having diameters no greater than the middle turn of the first spiral.
- 59. Anti-pulmonary embolism filter made of resilient wire having a remanent spring effect shaped into a spiral structure comprising at least one first non-planar spiral continuous with at least one second non-planar spiral, the first and the second spirals having substantially the same length, each spiral having two ends and being joined together at each of their respective ends, the first spiral having two lateral turns connected by at least one middle turn having a diameter greater than each of the lateral turns, and the second spiral having turns having diameters no greater than the middle turn of the first spiral.
Specification