Pistol-grip vacuum soft tissue biopsy device

Details Pistol-grip vacuum soft tissue biopsy device Pistol-grip vacuum soft tissue biopsy device

1992-03-16

1993-05-25

Hindenberg, Max

Surgery

Truss

Pad

A61B 1000

Patent

active

052131106

ABSTRACT:
A soft tissue biopsy device provided with a piston retraction mechanism designed as a pistol-grip handle for developing a suction chamber within a housing as the piston slides therein. The suction reaches the cannula tip as it is withdrawn, drawing tissue into a depression on an exposed stylet. When the piston retraction mechanism reaches a preset cam limit point, it automatically releases the piston, which is shot forward and restored to its position in the housing by vacuum-spring action. Thus, the cannula slides quickly over the stylet, cutting the tissue and retaining it in the depression. The entire procedure is performed by a single-handed operation. The inventive biopsy device is designed with a piston and housing which are relatively large in comparison to the cannula diameter. Thus, with initial retraction of the piston, a relatively large suction is developed in the cannula, drawing tissue therein and firmly seating it in the stylet depression.

REFERENCES:
patent: 3561429 (1971-02-01), Jewett
patent: 4667684 (1987-05-01), Leigh
patent: 4733671 (1988-03-01), Mehl
patent: 5048538 (1991-09-01), Terwilliger et al.

Affiliated with

Also associated with

Rating

Pistol-grip vacuum soft tissue biopsy device does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Pistol-grip vacuum soft tissue biopsy device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Pistol-grip vacuum soft tissue biopsy device will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-891567