Controlled surgical core biopsy system

Details Controlled surgical core biopsy system Controlled surgical core biopsy system

1996-09-04

1998-11-03

Hindenburg, Max

Surgery

Diagnostic testing

Sampling nonliquid body material

A61B 500

Patent

active

058301534

ABSTRACT:
A controlled surgical core biopsy system that is operated with one hand. The system includes a gun unit, a needle adapter system, and the needle assembly. The needle adapter system links the needle assembly to the gun unit. The gun unit may have a single trigger or double triggers. The single trigger embodiment requires manual insertion of the needle assembly into the tissue of interest. Once the needle assembly is manually inserted, the single trigger controls the cocking and firing of the cutting cannula over the inner stylet to trap tissue specimens in a specimen notch. As the cutting cannula is fired, the stylet and cutting cannula may be displaced vertically to facilitate the tissue specimens being trapped in the specimen notch. The double trigger embodiment, like the single trigger embodiment, requires only one hand to operate. This embodiment includes a gun unit, a needle adapter system, and a needle assembly. The double trigger embodiment requires that the needle assembly be manually inserted into the patent adjacent the tissue of interest. The upper trigger is used to advance the inner stylet and of the needle assembly a desired depth into the tissue of interest. The second trigger is used to cock and fire the outer cutting cannula to trap tissue specimens in the specimen notch of the stylet. When the outer cutting cannula is fired, the needle adapter system and the stylet may move vertically upward. This vertical movement assists in placing the tissue specimens in the specimen notch.

REFERENCES:
patent: 2710000 (1955-06-01), Cromer et al.
patent: 4461305 (1984-07-01), Cibley

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