BIOPSY DEVICE
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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.
7 Citations
73 Claims
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1-19. -19. (canceled)
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20. A biopsy device comprising:
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a chamber having a body having a proximal end, a distal end, and an inner wall, wherein the proximal end includes an inlet; a cannula coupled to the inlet, the cannula configured to take a tissue sample from a patient; a piston configured to engage the inner wall of the chamber; a first recessed area extending along the inner wall of the body, distal to the proximal end of the body of the chamber, wherein the first recessed area is configured to release positive pressure within the chamber, wherein the first recessed area is configured to be longitudinal, diagonal, latitudinal, or circular; and a second recessed area extending along the inner wall of the body, the second recessed area being separated distally from the first recessed area, the second recessed area being proximal to the distal end of the body of the chamber, wherein the second recessed area is configured to release negative pressure within the chamber, wherein the second recessed area is configured to be longitudinal, diagonal, latitudinal, or circular. - View Dependent Claims (59, 60, 61)
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21-58. -58. (canceled)
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62. A biopsy device comprising:
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a chamber having a body having a proximal end, a distal end, and an inner wall, wherein the proximal end includes an inlet; a cannula coupled to the inlet of the chamber; a first recessed area extending along the inner wall of the body, distal to the proximal end of the body of the chamber; a second recessed area extending along the inner wall of the body, proximal to the distal end of the body of the chamber; a piston configured to engage the inner wall of the chamber; and the chamber and piston configured such that as the piston engages the first recessed area, a positive pressure is released through the first recessed area, and as the piston engages the second recessed area, a negative pressure is released through the second recessed area. - View Dependent Claims (63, 64, 65, 66, 67, 68, 69, 72, 73)
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- 70. The device of claim 70, wherein the fluid receptacle is configured to absorb fluid.
Specification