Endovascular filter and method for use thereof

Patent 5160342 Issued on November 3, 1992. Estimated Expiration Date:

December 30, 2011. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

Patent References

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Inventors

Assignee

Evi Corp.

Application

No. 814141 filed on 12/30/1991

US Classes:

606/200, With emboli trap or filter606/159Blood vessel, duct or teat cutter, scrapper or abrader

Examiners

Primary: Thaler, Michael H.

Attorney, Agent or Firm

Foster; Lynn G.

Foreign Patent References

0177519 EP. 05/25/1984
3532653 DE. 12/25/1977
8100283 WO. 03/25/1983
584856 SU. 12/25/1977
764684 SU. 09/25/1980

International Class

A61M 025/00

Abstract

A filter useful in tubular organs of the human body, intended primarily for endovascular use during surgical procedures for removal of plaque and other treatment of stenoses in arteries, in order to entrap particles of plaque or other materials freed from the interior wall of an artery while permitting continued flow of blood through the artery during the procedure of treating the stenosis. Several filter elements are fastened in apart-spaced relationship with one another along a flexible elongate member and are large enough to require the entire flow of blood through the artery to pass through the filter elements. An open-mouthed tubular stocking of porous filter material encloses the filter elements and supports the periphery of each filter element. Successive filter elements, progressing in the direction of blood flow, pass only progressively smaller particles. In a preferred embodiment, the mouth of the stocking can be closed to retain particles of material within the filter as it is withdrawn from the artery after repair of a stenosis.

Other References

Technical Features in Endarterectomy, Barry H. LeVeen, M.D., Reprint from Surgery St. Louis, vol. 57, No. 1, pp. 22-27, 1965 from Departments of Surgery, The Veterans Administration, Hospital and State University of New York, Downstate Medical Center
Arterial Embolectomy Catheters, American Edwards Laboratories, date of publication unknow