Biopsy device
First Claim
1. A biopsy device, comprising:
- a cannula that defines a tissue chamber configured to receive a tissue sample from a patient;
a pressure chamber including a body having a distal end and a proximal end, the proximal end having an inlet coupled in fluid communication with the cannula;
the body having 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 having a second recessed area proximate the distal end, wherein the second recessed area is configured to release negative pressure within the pressure chamber; and
a piston 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.
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Accused Products
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.
575 Citations
20 Claims
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1. A biopsy device, comprising:
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a cannula that defines a tissue chamber configured to receive a tissue sample from a patient; a pressure chamber including a body having a distal end and a proximal end, the proximal end having an inlet coupled in fluid communication with the cannula; the body having 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 having a second recessed area proximate the distal end, wherein the second recessed area is configured to release negative pressure within the pressure chamber; and a piston 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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A biopsy device, comprising:
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a cannula that defines a tissue chamber configured to receive a tissue sample from a patient; a pressure chamber including a body having a distal end and a proximal end, the proximal end having an inlet coupled in fluid communication with the cannula; the body having 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 having 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 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; and a fluid receptacle interposed between the tissue chamber of the cannula and the inlet of the pressure chamber, the fluid receptacle containing a fluid-absorbing material. - View Dependent Claims (13, 14, 15)
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16. A biopsy device comprising:
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a cannula that defines a tissue chamber; a pressure chamber including a body having a distal end, a proximal end, and an inner wall, wherein the proximal end includes an inlet that is coupled to the cannula; a first recessed area extending along the inner wall of the body, proximate the proximal end of the body of the pressure chamber, wherein the first recessed area is configured to release a first pressure within the pressure chamber; a second recessed area extending along the inner wall of the body, proximate the distal end of the body of the pressure chamber, wherein the second recessed area is configured to release a second pressure within the pressure chamber; a piston configured to selectively engage each of the first recessed area and the second recessed area to respectively release the first pressure and the second pressure from the pressure chamber; and a fluid receptacle interposed between the tissue chamber and the pressure chamber, the fluid receptacle having an absorbent material to absorb a fluid. - View Dependent Claims (17, 18, 19, 20)
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Specification