Universal dilator with reciprocal incisor

Details Universal dilator with reciprocal incisor Universal dilator with reciprocal incisor

1995-10-13

1996-09-17

Buiz, Michael Powell

Surgery

Instruments

Blood vessel, duct or teat cutter, scrapper or abrader

606171, A61B 1722

Patent

active

055564054

ABSTRACT:
A device for incising and dilating a stenosis in a vessel of a patient includes a dilator housing and a plurality of incising blades which can be selectively extended distally from the housing. Specifically, the plurality of blades are mounted on a base member which is attached to the distal end of a push-pull catheter. The housing has a plurality of slits which are positioned distally from the base member with the blades on the base member in alignment with the slits in the housing. A placement catheter is positioned in a surrounding relationship over the push-pull catheter, and the distal end of the placement catheter is attached to the housing to create a chamber between the placement catheter and the housing in which the base member is located. In the operation of the device, the push-pull catheter is manipulated distally and proximally in the placement catheter to move the base member within the chamber between a first position and a second position. In the first position the blades are withdrawn into the housing and the housing is used as a dilator. In the second position the blades are extended distally through the slits in the housing and the device is used as an incisor.

REFERENCES:
patent: 2505358 (1950-04-01), Gusberg et al.
patent: 2749909 (1954-09-01), Ullery et al.
patent: 4273128 (1981-06-01), Lary
patent: 4723549 (1988-02-01), Wholey et al.
patent: 4966604 (1990-10-01), Reiss
patent: 5053044 (1991-10-01), Mueller et al.
patent: 5192291 (1993-03-01), Pannek, Jr.
patent: 5224945 (1993-07-01), Pannek, Jr.
patent: 5224949 (1993-07-01), Gomringer et al.
patent: 5372601 (1994-12-01), Lary
Banning G. Lary, MD, Coronary Artery Incision and Dilation, Archives of Surgery, Dec. 1980, vol. 115.
Banning G. Lary, M.D., Onlay Vein Graft for the Correction of Coronary Artery Obstruction, Surgery, Apr. 1966, vol. 59, No. 4, pp. 547-551.

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