Punch-biopsy apparatus with cannula-aiming device

Details Punch-biopsy apparatus with cannula-aiming device Punch-biopsy apparatus with cannula-aiming device

1990-02-12

1991-05-14

Hindenburg, Max

Surgery

Truss

Pad

A61R 1000

Patent

active

050147170

ABSTRACT:
A punch biopsy apparatus with a cannula-aiming device has a trocar braced against the end of the punch at one extremity and formed with a finger guide for the finger of the surgeon at the opposite end. To adjust the effective length of the trocar and thereby precisely control the depth of penetration, the first extremity of the trocar is provided with a tapered guide allowing insertion of the cannula and the stylet passing therethrough. The guide is externally threaded and is surrounded by an internally threaded adjustment sleeve rotatable relative to the guide. At the other end of the adjustment sleeve a clamping nut secures the adjustment sleeve against the trocar tube once the effective length has been set.

REFERENCES:
patent: 3595217 (1971-07-01), Rheinfrank
patent: 3732858 (1973-05-01), Banko
patent: 4010737 (1977-03-01), Vilaghy et al.
patent: 4142517 (1979-03-01), Starropoulos et al.
patent: 4266555 (1981-05-01), Jonshidi
patent: 4314565 (1982-02-01), Lee
patent: 4600014 (1986-07-01), Beraha
patent: 4681123 (1987-07-01), Valtcher

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