Methods and systems for capturing and removing urinary stones from body cavities
First Claim
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1. A method for removing a stone from a body cavity selected from the group consisting of a kidney and a bladder, said method comprising:
- mounting a perforate sweeping structure over a distal end of a viewing scope such that the perforate sweeping structure is removably coupled to and encloses the distal end of the viewing scope, the viewing scope having an optical element at the distal end thereof;
advancing the viewing scope and the perforate sweeping structure in the distal direction into an open volume of the body cavity;
deploying the perforate sweeping structure from the distal end of the viewing scope, wherein the deployed perforate sweeping structure is in an open concave configuration which increases in width in the distal direction and has an open distal end;
steering and advancing the viewing scope within the open volume to pass the stone through the open distal end of the deployed perforate sweeping structure, engage the deployed perforate sweeping structure against the stone, and urge the stone and the open distal end of the deployed perforate sweeping structure against a wall of the body cavity to enclose the stone between the deployed perforate sweeping structure and the body cavity wall; and
applying energy through the viewing scope against the captured stone to break up the stone and produce stone fragments wherein applying energy comprises advancing an energy applying tool through a working channel of the viewing scope, and wherein applying energy comprises delivering mechanical or pneumatic energy.
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Abstract
A stone capture device comprises a shaft with a deployable sweeping structure at its distal end. The shaft is adapted to be removably placed over and connected to a conventional ureteroscope. The combination of the stone capture device and ureteroscope can be introduced into the urinary tract to capture, fragment, and remove stones from the bladder and kidney.
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Citations
41 Claims
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1. A method for removing a stone from a body cavity selected from the group consisting of a kidney and a bladder, said method comprising:
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mounting a perforate sweeping structure over a distal end of a viewing scope such that the perforate sweeping structure is removably coupled to and encloses the distal end of the viewing scope, the viewing scope having an optical element at the distal end thereof; advancing the viewing scope and the perforate sweeping structure in the distal direction into an open volume of the body cavity; deploying the perforate sweeping structure from the distal end of the viewing scope, wherein the deployed perforate sweeping structure is in an open concave configuration which increases in width in the distal direction and has an open distal end; steering and advancing the viewing scope within the open volume to pass the stone through the open distal end of the deployed perforate sweeping structure, engage the deployed perforate sweeping structure against the stone, and urge the stone and the open distal end of the deployed perforate sweeping structure against a wall of the body cavity to enclose the stone between the deployed perforate sweeping structure and the body cavity wall; and applying energy through the viewing scope against the captured stone to break up the stone and produce stone fragments wherein applying energy comprises advancing an energy applying tool through a working channel of the viewing scope, and wherein applying energy comprises delivering mechanical or pneumatic energy. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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24. A stone capture device for use with a steerable viewing scope, said device comprising:
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a sheath having a distal end, a proximal end, and a lumen positionable over a shaft of the viewing scope to removably couple the sheath to the viewing scope; and a perforate sweeping structure extending distally from the distal end of the sheath and enclosing at least a portion of a distal end of the steerable viewing scope, wherein the perforate sweeping structure is shiftable between a tubular configuration with a width about the same as that of the sheath and an open concave configuration which increases in width in the distal direction and has an open distal end, wherein the distal end of the steerable viewing scope is disposed within the concave sweeping structure when deployed, and wherein the open distal end of the sweeping structure in its concave configuration is configured to be urged against a wall of a body cavity to enclose a stone within the body cavity between the sweeping structure and the cavity wall, the stone passing through the open distal end of the sweeping structure before being enclosed wherein applying energy comprises advancing an energy applying tool through a working channel of the viewing scope, and wherein applying energy comprises delivering mechanical or pneumatic energy. - View Dependent Claims (25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40)
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41. A stone capture device for use with a steerable viewing scope, said device comprising:
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a sheath having a distal end, a proximal end, and a lumen positionable over a shaft of the viewing scope to removably couple the sheath to the viewing scope; and a perforate sweeping structure extending distally from the distal end of the sheath and enclosing at least a portion of a distal end of the steerable viewing scope, wherein the perforate sweeping structure is shiftable between a tubular configuration with a width about the same as that of the sheath and an open a concave configuration which increases in width in the distal direction and has an open distal end, wherein a distal end of the steerable viewing scope attaches to the distal end of the perforate sweeping structure when the steerable viewing scope is disposed within the perforate concave sweeping structure and the sweeping structure is sufficiently flexible and bendable to allow steering of the steerable viewing scope within the sweeping structure prior to deployment to the concave configuration when deployed, and wherein the open distal end of the sweeping structure in its concave configuration is configured to be urged against a wall of a body cavity to enclose a stone within the body cavity between the sweeping structure and the cavity wall, the stone passing through the open distal end of the sweeping structure before being enclosed wherein applying energy comprises advancing an energy applying tool through a working channel of the viewing scope, and wherein applying energy comprises delivering mechanical or pneumatic energy.
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Specification