Abstract: A biopsy apparatus includes a cannula assembly having a cannula hub and a cutting cannula. A stylet assembly has a stylet hub and a stylet. The stylet is coaxial with the cutting cannula. An operator mechanism is configured to effect axial movement of the stylet hub and the cannula hub. The operator mechanism has a head portion configured to releasably engage the stylet hub and an arm member configured to releasably engage the cannula hub. The stylet hub is configured to be rotationally movable between an engaged position and a disengaged position, wherein in the engaged position the stylet hub is releasably connected to the head portion of the operator mechanism, and in the disengaged position, the stylet hub is disconnected from the head portion of the operator mechanism to facilitate axial movement of the stylet assembly in a proximal direction independent of the operator mechanism.

Abstract: A biopsy device includes a cannula that defines a tissue chamber configured to receive a tissue sample from a patient. A pressure chamber includes a body having a distal end and a proximal end. The proximal end has an inlet coupled in fluid communication with the cannula. The body has a first recessed area proximate the proximal end, wherein the first recessed area is configured to release positive pressure within the pressure chamber. The body has a second recessed area proximate the distal end, wherein the second recessed area is configured to release negative pressure within the pressure chamber. A piston is movably received in the body and configured to move over the first recessed area to release the positive pressure and configured to move over the second recessed area to release the negative pressure.

Abstract: A biopsy device includes a pressure chamber having a body having a distal end and a proximal end, wherein the proximal end includes an inlet. At least one first recessed area extends along an inner wall of the body, proximate the proximal end of the body of the pressure chamber. The first recessed area is configured to release pressure within the pressure chamber. At least one second recessed area extends along the inner wall of the body, proximate the distal end of the body of the pressure chamber. The second recessed area is configured to release pressure within the pressure chamber. A cannula is coupled to the pressure chamber for taking a tissue sample from a patient. The cannula defines a tissue chamber. A fluid receptacle is interposed between the tissue chamber and the pressure chamber. The fluid receptacle has an absorbent material to absorb a fluid.

Abstract: A biopsy device is disclosed. The biopsy device includes a chamber having a body having a distal end and a proximal end, wherein the proximal end includes an inlet. The biopsy device further includes a vacuum generator for generating negative and positive pressure and at least one first recessed area and at least one second recessed area. The first recessed area extends along an inner wall of the body, proximate the proximal end of the body of the chamber. The first recessed area is configured to release pressure within the chamber. The second recessed area extends along the inner wall of the body, proximate the distal end of the body of the chamber. The second recessed area is configured to release pressure within the chamber.

Abstract: A biopsy device includes a pressure chamber having a body having a distal end and a proximal end, wherein the proximal end includes an inlet. At least one first recessed area extends along an inner wall of the body, proximate the proximal end of the body of the pressure chamber. The first recessed area is configured to release pressure within the pressure chamber. At least one second recessed area extends along the inner wall of the body, proximate the distal end of the body of the pressure chamber. The second recessed area is configured to release pressure within the pressure chamber. A cannula is coupled to the pressure chamber for taking a tissue sample from a patient. The cannula defines a tissue chamber. A fluid receptacle is interposed between the tissue chamber and the pressure chamber. The fluid receptacle has an absorbent material to absorb a fluid.

Abstract: A biopsy device is disclosed. The biopsy device includes a chamber having a body having a distal end and a proximal end, wherein the proximal end includes an inlet. The biopsy device further includes a vacuum generator for generating negative and positive pressure and at least one first recessed area and at least one second recessed area. The first recessed area extends along an inner wall of the body, proximate the proximal end of the body of the chamber. The first recessed area is configured to release pressure within the chamber. The second recessed area extends along the inner wall of the body, proximate the distal end of the body of the chamber. The second recessed area is configured to release pressure within the chamber.

Abstract: A biopsy device is disclosed. The biopsy device includes a chamber having a body having a distal end and a proximal end, wherein the proximal end includes an inlet. The biopsy device further includes a vacuum generator for generating negative and positive pressure and at least one first recessed area and at least one second recessed area. The first recessed area extends along an inner wall of the body, proximate the proximal end of the body of the chamber. The first recessed area is configured to release pressure within the chamber. The second recessed area extends along the inner wall of the body, proximate the distal end of the body of the chamber. The second recessed area is configured to release pressure within the chamber.

Abstract: A method for using a biopsy device is disclosed. The biopsy device includes a chamber having a body having a distal end and a proximal end, wherein the proximal end includes an inlet. The biopsy device further includes a vacuum generator for generating negative and positive pressure and at least one first recessed area and at least one second recessed area. The first recessed area extends along an inner wall of the body, proximate the proximal end of the body of the chamber. The first recessed area is configured to release positive pressure within the chamber. The second recessed area extends along the inner wall of the body, proximate the distal end of the body of the chamber. The second recessed area is configured to release negative pressure within the chamber.

Abstract: A method for using a biopsy device is disclosed. The biopsy device includes a chamber having a body having a distal end and a proximal end, wherein the proximal end includes an inlet. The biopsy device further includes a vacuum generator for generating negative and positive pressure and at least one first recessed area and at least one second recessed area. The first recessed area extends along an inner wall of the body, proximate the proximal end of the body of the chamber. The first recessed area is configured to release positive pressure within the chamber. The second recessed area extends along the inner wall of the body, proximate the distal end of the body of the chamber. The second recessed area is configured to release negative pressure within the chamber.

Abstract: A biopsy device is disclosed. The biopsy device includes a chamber having a body having a distal end and a proximal end, wherein the proximal end includes an inlet. The biopsy device further includes a vacuum generator for generating negative and positive pressure and at least one first recessed area and at least one second recessed area. The first recessed area extends along an inner wall of the body, proximate the proximal end of the body of the chamber. The first recessed area is configured to release pressure within the chamber. The second recessed area extends along the inner wall of the body, proximate the distal end of the body of the chamber. The second recessed area is configured to release pressure within the chamber.

Abstract: A biopsy device is disclosed. The biopsy device includes a chamber having a body having a distal end and a proximal end, wherein the proximal end includes an inlet. The biopsy device further includes a vacuum generator for generating negative and positive pressure and at least one first recessed area and at least one second recessed area. The first recessed area extends along an inner wall of the body, proximate the proximal end of the body of the chamber. The first recessed area is configured to release pressure within the chamber. The second recessed area extends along the inner wall of the body, proximate the distal end of the body of the chamber. The second recessed area is configured to release pressure within the chamber.