A biopsy device having a cannula and a translating and rotating cutter with respect to the cannula is disclosed. The biopsy device may have a programmable memory for use in operating the cutter. The biopsy device may also include a reservoir, and may be functional to provide a flow of pressurized liquid through the cutter.
1. A biopsy device comprising:
(a) a disposable probe comprising:
(i) a cannula extending distally from the biopsy device, and
(ii) a cutter rotatable and translatable with respect to the cannula, wherein the cutter is operable to sever tissue received by the cannula;
(b) a reusable portion, wherein the disposable probe is adapted to be releasably joined to the reusable portion to form a handpiece, wherein the reusable portion comprises:
(i) at least one motor for providing movement of the cutter, and
(ii) a memory device for storing at least one current profile for the at least one motor; and
wherein the cutter is adapted to continue to rotate upon the cutter translation being stopped at a predetermined position.
2. The biopsy device of claim 1 wherein the at least one motor comprises a first motor for providing rotation of the cutter and a second motor for providing translation of the cutter.
3. The biopsy device of claim 2 , wherein the first and second motors are DC motors.
4. The biopsy device of claim 1 , wherein the memory device is reprogrammable.
5. The biopsy device of claim 1 comprising a current profile for advancing the cutter and a current profile for retracting the cutter.
6. The biopsy device of claim 5 , wherein the current profile for advancing the cutter is different from the current profile for retracting the cutter.
7. The biopsy device of claim 1 , wherein the biopsy device is adapted to determine if a predetermined period of time has elapsed upon the cutter reaching a predetermined position.
8. A biopsy device comprising:
(a) a handpiece, wherein the handpiece is configured to be operated by a single hand;
(b) a cannula extending distally from the handpiece;
(c) a cutter movable with respect to the cannula, wherein the cutter is operable to sever tissue received by the cannula;
(d) a reservoir in fluid communication with the cutter;
(e) at least one motor for providing movement of the cutter, wherein
the at least one motor is housed in the handpiece;
(f) a memory device for storing data corresponding to a desired operation of the cutter; and
wherein the biopsy device is operable to provide a flow of liquid through the cutter.
9. The biopsy device of claim 8 , wherein the cannula comprises a lateral tissue receiving feature.
10. The biopsy device of claim 9 , wherein the cutter is disposed within the cannula.
11. The biopsy device of claim 8 , wherein the handpiece comprises an actuator operable to actuate movement of the cutter.