Biopsy apparatus
First Claim
Patent Images
1. A biopsy apparatus, comprising:
- a disposable cutting element and a reusable handpiece;
wherein the disposable cutting element includes an outer cannula defining an outer lumen, a tissue-receiving opening proximate a distal end of the outer cannula communicating with the outer lumen, and an inner cannula slidably disposed within the outer lumen and defining an inner lumen from an open distal end to an open proximal end opposite the distal end, wherein the inner cannula includes a cutting edge at the open distal end operable to sever tissue projecting through the tissue-receiving opening, and a tissue aspiration path in the inner lumen, the tissue aspiration path extending from the open distal end of the inner cannula to the open proximal end of the inner cannula to allow a tissue sample to be aspirated from the open distal end of the inner cannula to the open proximal end of the inner cannula; and
wherein the reusable handpiece includes a first MRI compatible device detachably coupled to the inner cannula to rotate the inner cannula within the outer cannula, and a second MRI compatible device detachably coupled to the inner cannula to translate the inner cannula within the outer cannula while the inner cannula rotates.
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Abstract
A biopsy apparatus having a disposable cutting element and a reusable handpiece is disclosed. The disposable cutting element includes an inner cannula that defines an inner lumen and terminates in a cutting edge. The inner cannula is slidably disposed within an outer cannula that defines an outer lumen that has a tissue-receiving opening. The inner cannula is driven by a rotary motor and a reciprocating motor. Both motors are constructed of a MRI compatible material.
153 Citations
24 Claims
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1. A biopsy apparatus, comprising:
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a disposable cutting element and a reusable handpiece; wherein the disposable cutting element includes an outer cannula defining an outer lumen, a tissue-receiving opening proximate a distal end of the outer cannula communicating with the outer lumen, and an inner cannula slidably disposed within the outer lumen and defining an inner lumen from an open distal end to an open proximal end opposite the distal end, wherein the inner cannula includes a cutting edge at the open distal end operable to sever tissue projecting through the tissue-receiving opening, and a tissue aspiration path in the inner lumen, the tissue aspiration path extending from the open distal end of the inner cannula to the open proximal end of the inner cannula to allow a tissue sample to be aspirated from the open distal end of the inner cannula to the open proximal end of the inner cannula; and wherein the reusable handpiece includes a first MRI compatible device detachably coupled to the inner cannula to rotate the inner cannula within the outer cannula, and a second MRI compatible device detachably coupled to the inner cannula to translate the inner cannula within the outer cannula while the inner cannula rotates. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A biopsy apparatus, comprising:
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a disposable cutting element and a reusable handpiece; wherein the disposable cutting element includes an outer cannula defining an outer lumen, a tissue-receiving opening proximate a distal end of the outer cannula communicating with the outer lumen, and an inner cannula slidably disposed within the outer lumen and defining an inner lumen from an open distal end to an open proximal end opposite the distal end, wherein the inner cannula includes a cutting edge at the open distal end operable to sever tissue projecting through the tissue-receiving opening, wherein the reusable handpiece includes within the reusable handpiece a first MRI compatible device and a second MRI compatible device, the first MRI compatible device detachably coupled to said inner cannula to rotate the inner cannula within the outer cannula, the second MRI compatible device detachably coupled to the inner cannula to translate the inner cannula within the outer cannula while the inner cannula rotates, the first MRI compatible device has an axis of rotation that is spaced apart from the disposable cutter, and the second MRI compatible device has an axis of translation that is spaced apart from the disposable cutter. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24)
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Specification