Surgery – Miscellaneous – Devices placed entirely within body and means used therewith
Patent
1988-07-08
1989-05-23
Truluck, Dalton L.
Surgery
Miscellaneous
Devices placed entirely within body and means used therewith
128303R, 128325, A61B 1700
Patent
active
048320552
ABSTRACT:
A blood clot filter particularly suited for filtering blood clots from blood circulating through the inferior vena cava is composed of a number of peripheral wires joined at one end by a first connector and also joined approximately at their middle portions by a second connector. The wire portions extending between the two connectors form a filter mesh, and the wire portions extending between the second connector and the free ends form filtering legs which anchor the filter. The free ends have recurved hooks for radial engagement with a blood vessel. The filter mesh is formed by mechanically approximating the two connectors resulting in the formation of overlapping loops of wire. A central core wire is fixedly secured to one of the two connectors and slidingly extends through the second of the two connectors. The central core wire is retracted to slide the two connectors together. A lock device prevents the two connectors from sliding back apart. The wire strands may initially be substantially straightened in order to permit insertion of the filter into the lumen of an angiographic catheter. The catheter is positioned at a predetermined site within the vessel using standard percutaneous angiographic techniques from the groin or neck. A pusher catheter extending within a delivery catheter pushes the filter out of the delivery catheter and into the lumen of the blood vessel. A retractor cable extends through the pusher catheter and is releasably coupled to the central core wire for retracting the same. Once the filter has been delivered into the blood vessel and the filter mesh mechanically formed, the legs are released to anchor the filter in position, and the pusher wire is disconnected.
REFERENCES:
patent: 3334629 (1967-08-01), Cohn
patent: 3540431 (1970-11-01), Mobin-Uddin et al.
patent: 3834394 (1974-09-01), Hunter et al.
patent: 3868956 (1975-03-01), Alfidi et al.
patent: 3952747 (1976-08-01), Kimmel, Jr.
patent: 4274408 (1981-06-01), Nimrod
patent: 4425908 (1984-01-01), Simon
patent: 4430081 (1984-02-01), Timmermans
patent: 4494531 (1985-01-01), Gianturco
patent: 4643184 (1987-02-01), Mobin-Uddin et al.
Palestrant et al., "Comparative In Vitro Evaluation of the Nitinol Inferior Vena Cava Filter", Radiology, vol. 145, No. 2, pp. 351-355, Nov. 1982.
Simon et al., "Transvenous Devices for the Management of Pulmonary Embolism", CardioVascular and Interventional Radiology, 1980; 3: pp. 308-318.
Gunther et al., Fortschr, Rontgenstr, "Animal experiments with a new cava filter", vol. 142, No. 2, pp. 208-212 (1985).
Lund et al., Radiology, "Retrievable vena cava filter percutaneously introduced", vol. 155, No. 3, p. 831 (1985).
Lund et al., Radiology, "A new vena caval filter for percutaneous placement and retrieval: experimental study", vol. 152, pp. 369-372 (9/29/84).
Cragg et al., AJR, "A new percutaneous vena cava filter", vol. 141, pp. 601-604 (9/83).
Fadali et al., Surgery, "A filtering device for the prevention of particulate embolization during the course of cardiac surgery", vol. 64, No. 3, pp. 634-639.
MediTech Incorporated Brochure entitled "The Greenfield Vena Cava Filter, A Success Story", copyright 1986 (4 pages).
MediTech Incorporated Brochure entitled "Greenfield Vena Cava Filter System", copyright 1985, Bulletin VCF-1 (2 pages).
MediTech Incorporated publication entitled "Greenfield Vena Cava Filter System-Instructions For Use", Bulletin VCFS-5, Rev. 2/83.
Cook Inc., Advertisement, Cook "Bird's Nest" Vena Cava Filter.
L. G. Medical s.a., Advertisement, Vena Cava Filter, SP 2000, SP 2010, SP.
Cook Inc., Advertisement, Gunther Vena Cava Filter Set.
Castaneda-Zuniga et al., Seminars in Interventional Radiology, vol. 3, (9/86).
Wallace et al., "Inferior Vena Cava Stent Filter", AJR, vol. 147, pp. 1247-1250, (12/86).
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