Patent ID: 8480595

Claim:
A biopsy device, wherein the biopsy device comprises: (a) a needle having a tissue piercing tip and a transverse aperture proximal to the tip; (b) a cutter configured to sever tissue protruding through the aperture; (c) a body portion, wherein the needle is longitudinally movable relative to the body portion; (d) a needle firing mechanism, wherein the needle firing mechanism comprises (i) a resilient member biased to urge the needle distally relative to the body portion when the needle is in a proximal position, and (ii) a motor operable to simultaneously retract the needle proximally relative to the body portion and compress the resilient member; and (e) a trigger mechanism in communication with the needle firing mechanism, wherein the trigger mechanism comprises (i) a first actuator operable to activate the motor to retract the needle proximally relative to the body portion to cock the needle firing mechanism, and (ii) a second actuator operable to release the needle from the proximal position thereby allowing the resilient member to cause the needle to translate distally relative to the body portion, wherein the second actuator is configured to release the needle upon simultaneous actuation of the first actuator and the second actuator.