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US 7,351,210 B2Granted
Biopsy device with piston advance
AssigneeEthicon Endo-Surgery, Inc.
InventorsChris Cicenas, Luke Stonis
Life of this patent
Estimating the term…
Abstract
A biopsy device is provided. The biopsy device can include a cutter which is advanced through a first portion of its stroke by a differential fluid pressure acting on a piston. A mechanical drive can be used to translate and rotate the cutter during tissue severing.
Claims19
A biopsy device comprising:
- a hollow biopsy needle having a latcral tissue receiving port;
- a hollow cutter advancable within the biopsy needle, the cutter having a distal end;
- a first mechanism for advancing the distal end of the cutter to a position proximal of the lateral tissue receiving port;
- wherein the first mechanism employs pneumatics;
- and
- a second mechanism for advancing the distal end of the cutter distal of said position proximal of the lateral tissue receiving port, wherein the second mechanism does not employ pneumatics.
3 more elements
A biopsy device comprising:
- a hollow biopsy needle having a lateral tissue receiving port;
- a hollow cutter advancable within the biopsy needle, the hollow cutter having an open distal end;
- a first mechanism for advancing the distal end of the cutter to a position proximal of the lateral tissue receiving port, wherein the first mechanism is not operable to rotate the cutter;
- and
- a second mechanism for advancing the distal end of the cutter to a position distal of the lateral tissue receiving port, wherein the second mechanism is operable to simultaneously advance and rotate the cutter.
2 more elements
A biopsy device comprising:
- a hollow biopsy needle having a lateral tissue receiving port;
- a hollow cutter having a distal end advancable within the biopsy needle;
- a fluid driven piston operatively associated with the cutter for advancing the distal end of the cutter to a position proximal of the lateral tissue receiving port;
- and
- a non-pneumatic mechanism operatively associated with the cutter for advancing the distal end of the cutter from the position proximal of the lateral tissue receiving port to a position distal of the lateral tissue receiving port.
2 more elements
Dependencies are inferred from the claim text.