Single-Insertion, Multiple Sample Biopsy Device with Integrated Markers
First Claim
Patent Images
1. A single-insertion, multiple sample biopsy device, comprising:
- a stylet extending along a longitudinal axis between a distal end and a proximal end, the stylet having a tip at the distal end and a hollow interior volume extending from a biopsy port proximate the distal end to the proximal end;
a cannula that surrounds a portion of the stylet and movable along the longitudinal axis;
a plurality of lumens disposed in the interior volume;
a first lumen coupled to one of the plurality of lumens;
a first bulkhead disposed near the proximal end, the first bulkhead being coupled to the lumens and a second bulkhead disposed near the distal end, the second bulkhead being coupled to the first lumen, both bulkheads defining a biopsy sample volume; and
a transport subassembly coupled to the first and second bulkheads to move a biopsy sample from the biopsy port to the proximal end of the stylet.
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Abstract
The present invention provides for exemplary embodiments of a single-insertion, multiple sample biopsy device. Exemplary embodiments of a single-insertion, multiple sampling device with integrated marker release.
211 Citations
51 Claims
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1. A single-insertion, multiple sample biopsy device, comprising:
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a stylet extending along a longitudinal axis between a distal end and a proximal end, the stylet having a tip at the distal end and a hollow interior volume extending from a biopsy port proximate the distal end to the proximal end; a cannula that surrounds a portion of the stylet and movable along the longitudinal axis; a plurality of lumens disposed in the interior volume; a first lumen coupled to one of the plurality of lumens;
a first bulkhead disposed near the proximal end, the first bulkhead being coupled to the lumens and a second bulkhead disposed near the distal end, the second bulkhead being coupled to the first lumen, both bulkheads defining a biopsy sample volume; anda transport subassembly coupled to the first and second bulkheads to move a biopsy sample from the biopsy port to the proximal end of the stylet. - View Dependent Claims (2, 3, 4, 5, 6, 51)
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7. A single-insertion, multiple sample biopsy device that includes:
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a stylet extending along a longitudinal axis between a distal end and a proximal end, the stylet having a tip at the distal end and a hollow interior volume extending from a biopsy port proximate the distal end to the proximal end; a cannula that surrounds a portion of the stylet and movable along the longitudinal axis;
a sleeve disposed between the stylet and the cannula;a lumen disposed in the interior volume of the stylet; a bulkhead coupled to a distal end of the lumen; and a transport subassembly coupled to the lumen and the sleeve to move the bulkhead and sleeve relative to each other along the longitudinal axis between the proximal and distal ends. - View Dependent Claims (8, 9, 10, 11, 12, 13)
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14. A method of sampling biological tissue with a biopsy device having a tissue trough coupled to at least one lumen disposed in a needle that extends along a longitudinal axis between a distal end and a proximal end, the method can be achieved by:
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capturing a biological sample in longitudinal aperture defined on a circumference of the needle; and translating the at least one lumen through the interior of the needle to transport the biological sample from the distal to the proximal ends. - View Dependent Claims (15)
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16. A biopsy device comprising:
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a stylet extending along a longitudinal axis between a distal end and a proximal end, the stylet having a sample opening and an interior volume adjacent its distal end, the opening providing access to the interior volume; a longitudinal cutting member with a cutting edge, the cutting member being movable with respect to the stylet such that the cutting edge can cross over the sample opening to cut a tissue sample from a host; at least one lumen inside the stylet and movable along the longitudinal axis, the lumen having a distal bulkhead at a distal end of the interior volume; and a transport subassembly coupled to the at least one bulkhead to move a tissue sample from the sample port to the proximal end of the stylet. - View Dependent Claims (17, 18, 19)
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20. A single-insertion, multiple sample biopsy device, comprising:
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a cannula forming at least part of an insertable biopsy needle, the cannula having a distal end where samples are received and a proximal end where samples are recovered; a shuttle mechanism including a distal bulkhead within the cannula, the distal bulkhead being connected to a fluid line; and a mechanism that feeds and retracts incremental portions of the fluid line, the fluid line being sufficiently stiff, as well as supported by the cannula, to allow the distal bulkhead to be pushed through the cannula, thereby to advance and withdraw the distal bulkhead within the cannula, whereby samples placed on a proximal side of the distal bulkhead are urged in a proximal direction by the distal bulkhead. - View Dependent Claims (21, 22, 23, 24, 25)
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26. A method of sampling biological tissue with a biopsy device having a cutting sheath surrounding an intermediate sheath which surrounds a cannula, the cannula having a distal end with a port where tissue samples are received and a proximal end where samples are delivered, the cannula carrying a movable bulkhead within it, the bulkhead being connected to a suction tube, an annular space being defined between the intermediate sheath and the cannula, the method comprising:
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drawing a vacuum in the suction tube to suck a sample into the cannula distal end while the bulkhead is in a distal position in the cannula; and moving the bulkhead proximally while fluid is conveyed through the annular space toward the cannula distal end and back through the cannula to transport the resected sample to the proximal end. - View Dependent Claims (27, 28, 29, 30, 31)
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32. A single-insertion, multiple sample biopsy device, comprising:
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a cutting sheath, an intermediate sheath, and a cannula all being coaxially aligned with the cutting sheath surrounding the intermediate sheath and the intermediate sheath surrounding the cannula, an annular space being defined between the intermediate sheath and the cannula; the cannula having a distal end with a port where tissue samples are received and a proximal end where samples are delivered; the intermediate sheath being movable relative to the cannula to selectively open and close the port; the cannula carrying a movable bulkhead within it, the bulkhead being connected to a suction tube; a drive mechanism that forces the tube along the cannula to move the bulkhead distally and proximally; and a fluid pumping mechanism to pump fluid into the annular space when the intermediate sheath partly covers the port, thereby causing fluid to enter the port at a distal end thereof and flow along the cannula in a proximal direction. - View Dependent Claims (33, 34)
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35. A biopsy device, comprising:
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a stylet having a sample extraction portion and a sample recovery position; a first bulkhead engaged with, and movable along, the stylet; a drive member attached to the first bulkhead to move the first bulkhead between the sample extraction portion and the sample recovery position; and a fluid conveyance to convey fluid into the stylet as the first bulkhead is moved from a position distal of the sample extraction portion to the sample recovery position sufficient to lubricate a tissue sample engaged by the first bulkhead as it the sample is moved along the stylet. - View Dependent Claims (36, 37, 38, 39, 40)
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41. A biopsy device, comprising:
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a stylet having a sample extraction portion and a sample recovery position; a drive member movable between the sample extraction portion and the sample recovery position; and a fluid conveyance to convey fluid into the stylet as the drive member is moved from a position distal of the sample extraction portion to the sample recovery position sufficient to lubricate a tissue sample engaged by the first bulkhead as it the sample is moved along the stylet. - View Dependent Claims (42, 43, 44, 45)
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46. A biopsy device, comprising:
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a stylet having a sample extraction portion and a sample recovery position; a drive member movable between the sample extraction portion and the sample recovery position; and a fluid conveyance to convey fluid into the stylet as the drive member is moved from a position distal of the sample extraction portion to the sample recovery position sufficient to fill an expanding space remaining distal of the drive member as the drive member moves from the sample extraction portion to the sample recovery position. - View Dependent Claims (47, 48, 49, 50)
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Specification