Self-centering valvulotome

Details Self-centering valvulotome Self-centering valvulotome

1995-04-26

1997-08-19

Buiz, Michael

Surgery

Instruments

Blood vessel, duct or teat cutter, scrapper or abrader

606170, A61B 1732

Patent

active

056583010

ABSTRACT:
Self-centering valvulotome (V) having a flexible cable (1) partly and slidably disposed within a protective sheath (2), a cutting unit (4), having at least three radially mounted, retractable cutting blades, attached to the cable at its distal end, and a dual-purpose control mechanism attached to the cable at its proximal end. Each retractable cutting blade comprises a free-floating cutting head and a flat spring section, which biases the cutting head against the venous wall. The control mechanism comprises a T-valve segment disposed partly within the proximal end of the protective sheath. A pull handle affixed to the proximal end of the cable can engage the T-valve such that a fluid-tight seal is created, thereby allowing the introduction of a diagnostic or therapeutic fluid to the protective sheath via an access port in the valve.

REFERENCES:
patent: 3837345 (1974-09-01), Matar
patent: 5069679 (1991-12-01), Taheri
patent: 5133725 (1992-07-01), Quadi
patent: 5152771 (1992-10-01), Sebbaghian et al.
patent: 5156610 (1992-10-01), Reger
patent: 5171316 (1992-12-01), Mehigan
patent: 5234450 (1993-08-01), Segalowitz
patent: 5269764 (1993-12-01), Vetter et al.
patent: 5282484 (1994-02-01), Reger
patent: 5304189 (1994-04-01), Goldberg et al.
patent: 5352232 (1994-10-01), Cohen

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