Patent ID: 8622926

Claim:
A biopsy device, comprising: (a) a body; (b) a needle extending distally from the body, wherein the needle has a distal end and a lateral aperture positioned proximal to the distal end; (c) a cutter movable relative to the needle to sever tissue protruding through the lateral aperture, wherein the cutter defines an inner lumen; (d) a vacuum pump in fluid communication with the lumen of the cutter; (e) a fluid pump coupled with the body, wherein the fluid pump is in fluid communication with the needle; (f) a fluid pump actuation assembly in communication with the fluid pump, wherein the fluid pump actuation assembly is operable to actuate the fluid pump to deliver a bolus of fluid to the needle based on movement of the cutter; (g) a motor operable to actuate the cutter, the vacuum pump, and the fluid pump actuation assembly; and (h) a first lead screw operable to move the cutter longitudinally relative to the needle.