Methods and devices for automated biopsy and collection of soft tissue
First Claim
Patent Images
1. A biopsy device comprising:
- a rotatably supported outer piercing needle, the needle having a longitudinal axis, a needle lumen, a tissue piercing closed distal end, and a lateral opening for receiving tissue, the lateral opening located proximal of the tissue piercing closed distal end, the needle rotatable about its longitudinal axis to position the lateral opening at multiple tissue sampling positions;
a hollow cutter, the cutter translatable and rotatable in the needle lumen with respect to the lateral opening in the needle, the cutter translatable from an open proximal position to a closed, distal position with respect to the tissue receiving opening, and the cutter having a sharpened distal end for cutting tissue received in the lateral opening of the outer piercing needle; and
the biopsy device having a liquid flow path when the cutter is in the closed, distal position for providing a liquid flow in a portion of the needle lumen distal of the cutter, wherein the liquid flow path comprises a hole disposed distally of the lateral opening of the needle.
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Abstract
A biopsy device and related method are disclosed. The biopsy device disclosed includes a needle having a lateral opening for receiving tissue. The needle may be rotatable with respect to a portion of the biopsy device, such as a housing of the biopsy device, and the needle may be offset from a center of the housing. A hollow cutter is disclosed for cutting tissue received in the lateral opening of the needle.
224 Citations
18 Claims
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1. A biopsy device comprising:
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a rotatably supported outer piercing needle, the needle having a longitudinal axis, a needle lumen, a tissue piercing closed distal end, and a lateral opening for receiving tissue, the lateral opening located proximal of the tissue piercing closed distal end, the needle rotatable about its longitudinal axis to position the lateral opening at multiple tissue sampling positions; a hollow cutter, the cutter translatable and rotatable in the needle lumen with respect to the lateral opening in the needle, the cutter translatable from an open proximal position to a closed, distal position with respect to the tissue receiving opening, and the cutter having a sharpened distal end for cutting tissue received in the lateral opening of the outer piercing needle; and the biopsy device having a liquid flow path when the cutter is in the closed, distal position for providing a liquid flow in a portion of the needle lumen distal of the cutter, wherein the liquid flow path comprises a hole disposed distally of the lateral opening of the needle. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A biopsy device comprising:
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an elongate outer piercing needle, the needle having a longitudinal axis, a needle lumen, a tissue piercing closed distal end, and a lateral opening for receiving tissue, the lateral opening located proximal of the tissue piercing closed distal end, and the needle rotatable about its longitudinal axis to position the lateral opening at multiple tissue sampling positions; an elongate hollow cutter, the cutter translatable and rotatable in the needle lumen with respect to the lateral opening in the needle, the cutter translatable from a generally open proximal position to a generally closed, distal position with respect to the tissue receiving opening, and the cutter having a proximal end and a sharpened distal end for cutting tissue received in the lateral opening of the outer piercing needle; a fluid port disposed distally of the proximal end of the cutter, and the fluid port disposed proximally of the lateral opening in the needle, wherein the fluid port is a vacuum port; a fluid seal disposed proximally of the fluid port and a fluid seal disposed distally of the fluid port; and the biopsy device having a liquid flow path when the cutter is in the closed, distal position for providing a liquid flow in a portion of the needle lumen distal of the cutter. - View Dependent Claims (8, 9, 10, 11, 12, 13)
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14. A biopsy device comprising:
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a housing; an outer piercing needle, the needle having a longitudinal axis offset from a center of the housing, a tissue piercing closed distal end, and a lateral opening located proximal to the closed distal end for receiving tissue, and the needle being rotatable about its longitudinal axis with respect to the housing; a hollow cutter, the cutter having a longitudinal axis, the cutter translatable and rotatable with respect to the lateral opening in the needle, and the cutter having a sharpened distal end for cutting tissue received in the lateral opening of the outer piercing needle; a vacuum source in fluid communication with the lateral opening in the needle through the hollow cutter; and the biopsy device having a liquid flow path for providing a liquid flow in a portion of the needle lumen, wherein the liquid flow path comprises a hole disposed distally of the lateral opening of the needle. - View Dependent Claims (15, 16, 17, 18)
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Specification