Vacuum syringe assisted biopsy device

摘要

A biopsy device and method are provided for obtaining a tissue sample, such as a breast tissue biopsy sample. The biopsy device includes a disposable probe assembly with an outer cannula having a distal piercing tip, a cutter lumen, and a cutter tube that rotates and translates past a side aperture in the outer cannula to sever a tissue sample. The biopsy device also includes a reusable handpiece with an integral motor and power source to make a convenient, untethered control for use with ultrasonic imaging. The reusable handpiece incorporates a probe oscillation mode to assist when inserting the distal piercing tip into tissue. The motor also actuates a vacuum syringe in coordination with movement of the cutter tube to provide vacuum assistance in prolapsing tissue and retracting tissue samples.

主权项

1. A biopsy device, comprising:
a probe cannula defining an internal passage; a proximal portion attached to the probe cannula positionable to insert the probe cannula into tissue; a cutter reciprocally received by the probe cannula to sever a tissue sample received in the probe cannula; a pneumatic container attached with the proximal portion and operably configured to communicate a low pneumatic pressure contained within the pneumatic container with the probe cannula; a motor contained in the proximal portion operatively coupled to translate the cutter, wherein the motor is further operatively coupled to reduce pneumatic pressure in the pneumatic container; and a frame assembly positioned within the biopsy device adjacent the proximal portion and attached to the probe cannula, wherein the frame assembly is longitudinally movable within the biopsy device, wherein the motor is further operably configured to impart a longitudinal to reciprocating motion to the frame assembly during insertion of the probe cannula into tissue.