Self-contained handheld biopsy needle
First Claim
1. A method of operating a biopsy device in obtaining at least one tissue sample, comprising:
- inserting a sampling probe having a first component and a second component into a biological tissue mass, the first component and the second component being rotatable relative to each other, the first component having a sample chamber and a side port that opens to the sample chamber, and the second component having a side opening;
generating a vacuum in the sample chamber during a first drive interval;
rotating at least one of the first component and the second component of the sampling probe during a second drive interval until the side port of the first component and the side opening of the second component are in radial alignment; and
rotating at least one of the first component and the second component of the sampling probe during a third drive interval to sever tissue drawn by vacuum into the sample chamber to deposit a tissue sample in the sample chamber.
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Accused Products
Abstract
A method of operating a biopsy device includes inserting a sampling probe having a first component and a second component into a biological tissue mass, the first component having a sample chamber and a side port that opens to the sample chamber, and the second component having a side opening; generating a vacuum in the sample chamber during a first drive interval; rotating at least one of the first component and the second component of the sampling probe during a second drive interval until the side port of the first component and the side opening of the second component are in radial alignment; and rotating at least one of the first component and the second component of the sampling probe during a third drive interval to sever tissue drawn by vacuum into the sample chamber to deposit a tissue sample in the sample chamber.
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Citations
20 Claims
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1. A method of operating a biopsy device in obtaining at least one tissue sample, comprising:
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inserting a sampling probe having a first component and a second component into a biological tissue mass, the first component and the second component being rotatable relative to each other, the first component having a sample chamber and a side port that opens to the sample chamber, and the second component having a side opening; generating a vacuum in the sample chamber during a first drive interval; rotating at least one of the first component and the second component of the sampling probe during a second drive interval until the side port of the first component and the side opening of the second component are in radial alignment; and rotating at least one of the first component and the second component of the sampling probe during a third drive interval to sever tissue drawn by vacuum into the sample chamber to deposit a tissue sample in the sample chamber. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A method for operating a biopsy device, comprising:
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providing a biopsy needle having a first cylindrical member and a second cylindrical member, the first cylindrical member and the second cylindrical member being rotatable relative to each other, the first cylindrical member having a sample chamber and a side port that opens to the sample chamber, and the second cylindrical member having a side opening; generating a vacuum in the sample chamber during a first drive interval; rotating at least one of the first cylindrical member and the second cylindrical member of the biopsy needle during a second drive interval until the side port of the first cylindrical member and the side opening of the second cylindrical member are in radial alignment; rotating at least one of the first cylindrical member and the second cylindrical member of the biopsy needle during a third drive interval to sever tissue drawn by vacuum into the sample chamber to deposit a tissue sample in the sample chamber; generating a positive pressure in the sample chamber during a fourth drive interval; and rotating at least one of the first cylindrical member and the second cylindrical member of the biopsy needle during a fifth drive interval until the side port of the first cylindrical member and the side opening of the second cylindrical member again are in radial alignment to release the positive pressure in the sample chamber to expel the tissue sample from the sample chamber. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification