Length detection system for biopsy device
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United States of America Patent
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Jan 23, 2018
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N/A
app pub date -
Mar 13, 2015
filing date -
Jul 9, 2004
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Abstract
A disposable unit for a biopsy device includes a hollow needle configured to define a longitudinal path. A sample-receiving device having a cavity is configured to move in the hollow needle along the longitudinal path between an extended position and a retracted position. A transport device is configured to move the sample-receiving device in the hollow needle between the extended position and the retracted position. The transport device includes a bendable elongate element having a proximal portion and a distal end, the distal end being connected to the sample-receiving device. The bendable elongate element has a tooth surface that is engaged by a rotatable gear. A coiling device is configured to coil the proximal portion of the bendable elongate element as the sample-receiving device is moved linearly along the longitudinal path from the extended position to the retracted position by operation of the rotatable gear.
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