Length detection system for biopsy device
First Claim
1. A biopsy device for harvesting at least one tissue sample from a body of a living being, the device comprising:
- a handle unit;
a disposable unit configured to be releasably attached to the handle unit, the disposable unit including a sample-receiving device and a longitudinally extending hollow needle,the sample-receiving device having a cavity in the form of a canoe configured to receive tissue during a biopsy procedure, the longitudinally extending hollow needle having a distal end portion with a cutting edge, the hollow needle being configured to move relative to the cavity of the sample-receiving device to sever a tissue sample from the tissue received in the cavity,the sample-receiving device being receivable in the hollow needle and longitudinally displaceable therein between a first extended position, in which the cavity of the sample-receiving device projects from the distal end portion of the hollow needle to receive the tissue, and a second retracted position, in which the cavity of the sample-receiving device is in a proximal position with respect to the distal end portion of the hollow needle, and in which the tissue sample can be ejected from the cavity, and wherein the sample-receiving device is not removed from the biopsy device to retrieve the tissue sample from the cavity;
a transport device configured to move the sample-receiving device in the hollow needle between the first extended position and the second retracted position;
a control system configured to control movement of the transport device and to arrest the sample-receiving device in the second retracted position for retrieval from within the biopsy device of the tissue sample from the cavity; and
a liquid supply unit adapted to supply a flushing liquid, the transport device being configured to activate the liquid supply unit to supply the flushing liquid to the cavity of the sample-receiving device when the sample-receiving device is moved to the second retracted position so as to eject the tissue sample from the cavity within the biopsy device.
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0 Petitions
Accused Products
Abstract
A biopsy device for harvesting tissue samples from a body of a living being, e.g. in percutaneous aspiration biopsy, includes a handle unit, a hollow needle comprised in a disposable unit, which is releasably attached to the handle unit, and a sample-receiving device, which is movable in the hollow needle between two positions. Tissue is severed when the sample-receiving device is in a first one of the positions, and the severed tissue sample is ejected from the sample-receiving device in a second one of the two positions. A control system is provided for controlling movement of the sample-receiving device and for arresting the sample-receiving device in the second position. The distance between the two positions and/or a length of the hollow needle may be detectable in a calibration cycle, which is automatically initiated upon attachment of the disposable unit to the handle unit. The disposable unit may include electronic memory means for communicating with the control system.
385 Citations
19 Claims
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1. A biopsy device for harvesting at least one tissue sample from a body of a living being, the device comprising:
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a handle unit; a disposable unit configured to be releasably attached to the handle unit, the disposable unit including a sample-receiving device and a longitudinally extending hollow needle, the sample-receiving device having a cavity in the form of a canoe configured to receive tissue during a biopsy procedure, the longitudinally extending hollow needle having a distal end portion with a cutting edge, the hollow needle being configured to move relative to the cavity of the sample-receiving device to sever a tissue sample from the tissue received in the cavity, the sample-receiving device being receivable in the hollow needle and longitudinally displaceable therein between a first extended position, in which the cavity of the sample-receiving device projects from the distal end portion of the hollow needle to receive the tissue, and a second retracted position, in which the cavity of the sample-receiving device is in a proximal position with respect to the distal end portion of the hollow needle, and in which the tissue sample can be ejected from the cavity, and wherein the sample-receiving device is not removed from the biopsy device to retrieve the tissue sample from the cavity; a transport device configured to move the sample-receiving device in the hollow needle between the first extended position and the second retracted position; a control system configured to control movement of the transport device and to arrest the sample-receiving device in the second retracted position for retrieval from within the biopsy device of the tissue sample from the cavity; and a liquid supply unit adapted to supply a flushing liquid, the transport device being configured to activate the liquid supply unit to supply the flushing liquid to the cavity of the sample-receiving device when the sample-receiving device is moved to the second retracted position so as to eject the tissue sample from the cavity within the biopsy device. - 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 device for harvesting at least one tissue sample from a body of a living being, the device comprising:
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a handle unit having an electronic interface and a control system communicatively coupled to the electronic interface; a disposable unit configured to be operatively coupled to the handle unit, the disposable unit including a sample-receiving device and a longitudinally extending hollow needle, the sample-receiving device having a cavity to receive tissue, the hollow needle being configured to move relative to the cavity of the sample-receiving device to sever a tissue sample from tissue received in the cavity, and the disposable unit having a physical non-transitory electronic memory device, wherein the electronic interface of the handle unit is configured to communicate with the physical non-transitory electronic memory device of the disposable unit to derive information stored in the physical non-transitory electronic memory device and communicate the information to the control system. - View Dependent Claims (18, 19)
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Specification