The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 11, 1990
Filed:
Oct. 26, 1989
Donald N Mehl, Chanhassen, MN (US);
Creative Research & Manufacturing, Minneapolis, MN (US);
Abstract
Tissue needle for extracting a biopsy sample including a pistol style squeezable hand grip for single hand tissue needle operation during a biopsy procedure. A spring tensioned sliding cannula, including a configured cutting edge, is actuated by a squeeze trigger and cam arrangement to slide over a fixed position stylet for entry into a tissue sample area. A squeeze trigger manually cycles using one hand to obtain a biopsy sample contained in a tissue sample notch of the sharp stylet tip whereupon the tissue needle can then be manually withdrawn. The tissue needle can be left temporarily in position in the tissue sample area in preparation for additional sampling while the stylet is withdrawn independently of the cannula prior to other samplings after subsequent reinsertion of the stylet into the cannula.