Biopsy needle with cauterization feature

Details Biopsy needle with cauterization feature Biopsy needle with cauterization feature

1994-11-04

1996-11-26

Sykes, Angela D.

Surgery

Instruments

Electrical application

606 49, A61B 1000

Patent

active

055780300

ABSTRACT:
A biopsy needle cauterizes the wound caused by the taking of a tissue specimen and the tissues in contact with the biopsy needle prior to withdrawal of the biopsy needle from a person, thereby minimizing bleeding and preventing the proliferation of any existing cancer cells along the path of insertion and withdrawal of the biopsy needle from the body. In contrast with existing biopsy needles, the tissue is excised by retraction of the stylet into the cannula, with the cutting edge being at the junction of the upper surface of the stylet and the front wall of the recess which holds the tissue specimen, rather than excising the tissue by sliding the cannula forward over the recess in the stylet with the cutting means at the leading edge of the cannula.

REFERENCES:
patent: 1813902 (1931-07-01), Bovie
patent: 2275167 (1942-03-01), Bierman
patent: 3598108 (1971-08-01), Jamshidi
patent: 3630192 (1971-12-01), Jamshidi
patent: 3648001 (1972-03-01), Anderson
patent: 3938527 (1976-02-01), Rioux
patent: 4016881 (1977-04-01), Rioux
patent: 4733671 (1988-03-01), Mehl
patent: 4776334 (1988-10-01), Prionas
patent: 4781198 (1988-11-01), Kanabrocki
patent: 4917100 (1990-04-01), Nottke
patent: 5295990 (1994-03-01), Levin

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