Valvulotome with leaflet disruption heads and fluid supply

Details Valvulotome with leaflet disruption heads and fluid supply Valvulotome with leaflet disruption heads and fluid supply

1988-02-29

1990-08-28

Thaler, Michael H.

Surgery

Instruments

Blood vessel, duct or teat cutter, scrapper or abrader

606170, 604 22, A61B 1732

Patent

active

049522159

ABSTRACT:
A valvulotome for rendering venous valve leaflets incompetent includes a rigid support comprising a fluid supply tube and, molded thereon, a dilator, and first and second valve disrupting heads. Each of the disrupting heads has a plane of symmetry, wherein the planes of symmetry of the two disrupting heads are relatively rotated by about 90.degree.. A fluid emitting end of the fluid supply tube communicates with an irrigation port in a disrupting head so that fluid emitted through the irrigation port, during use, applies pressure to the valve leaflets to be disrupted. The other end of the fluid supply tube is swaged onto a catheter which in turn is coupled to a fluid supply source for the purpose of supplying fluid to the irrigation port.

REFERENCES:
patent: 2779334 (1957-01-01), Sandborn
patent: 3837345 (1974-09-01), Matar
patent: 4493321 (1985-01-01), Leather
patent: 4655217 (1987-04-01), Reed
patent: 4681106 (1987-07-01), Kensey et al.
Kutz et al., "New Vein Stripper and Technique of Stripping", Surgery, Feb. 1951, pp. 271-275.
Skagseth et al., "In Situ Vein Bypass", Scand. J. Thor. Cardiovasc. Surg., 7:53-58, 1973.
Samuels et al., "In Situ Saphenous Vein Arterial Bypass", The American Surgeon, Feb. 1968, vol. 34, No. 2, pp. 122-129.
Mills et al., "Valvulotomy of Valves in the Saphenous Vein Graft Before Coronary Artery Bypass", J. Thorac.Cardiovasc. Surg., 76:878-879, 1976.
LeMaitre, In Situ Bypass Grafting, Vascutech, Inc., Andover, Mass., 1987, extracts including pp. 12-14, 24, 33-37, 47-54, 70-75, 87-93, 136-155.

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