Instrument for internal organ biopsy

Abstract

Abstract Biopsy needle means particularly adapted for the withdrawal of tissue through a cannula forced through or along an unnatural route into the interior of a live body or organ such as thyroid, spleen, or a tumor mass, the means comprising, in combination, a biopsy needle including a generally hollow axially flexible elongated needle having a generally uniform cylindrical configuration with an internal core of substantially constant internal diameter extending throughout the major portion of the axial length of the needle, said needle having a tapered distal tip with a cutting surface formed along the edges of the tip, the needle having substantial axial flexure, stylet means having an external configuration generally matching the configuration of said core and arranged to be received within the core of said hollow needle, the stylet means comprising a rigid shaft having a closed sharp tip arranged to extend distally from the tapered distal tip when the stylet is received within the core of the hollow needle. In addition, the biopsy needle means is provided with a sheath which has substantial axial flexure for accommodating relative motion of various organs within the body, and reducing or eliminating the occurrences of bleeding complications.

Inventors

• 👤 Khosrow Jamshidi

Bibliographic Details