Method and apparatus for body structure manipulation and dissection
First Claim
1. A method for dissecting a hollow body structure, said method comprising:
- introducing an expandable member on the distal end of a rigid shaft into an interior volume of the hollow body structure;
expanding the expandable member to occupy at least a major portion of the interior volume sufficient to allow manipulation of substantially all of the hollow body structure; and
separating attachment of the hollow body structure from surrounding tissues while simultaneously manipulating the rigid shaft to reposition the hollow body structure.
5 Assignments
0 Petitions
Accused Products
Abstract
Hollow body structures may be manipulated and dissected from surrounding tissue using a manipulator device and a dissection device, The manipulator includes a rigid shaft having an inflatable balloon at its distal end. By inserting the balloon through a wall of the body structure and inflating the balloon, the body structure can be manipulated using the shaft to expose a dissection plane in an optimum manner. The dissection device is used to separate the body structure from its surrounding tissue. The separator device includes a separator head which is a cylindrical body having a plurality of axial channels therein. The dissector head is rotated or oscillated at a high frequency and acts to separate the body structure from the surrounding tissue with minimum damage.
164 Citations
31 Claims
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1. A method for dissecting a hollow body structure, said method comprising:
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introducing an expandable member on the distal end of a rigid shaft into an interior volume of the hollow body structure; expanding the expandable member to occupy at least a major portion of the interior volume sufficient to allow manipulation of substantially all of the hollow body structure; and separating attachment of the hollow body structure from surrounding tissues while simultaneously manipulating the rigid shaft to reposition the hollow body structure. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method for dissecting a gallbladder from surrounding tissue, said method comprising:
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forming a penetration through a wall of the gallbladder; aspirating bile from the interior of the gallbladder; introducing an expandable member on the distal end of a rigid shaft into the interior of the gallbladder; expanding the expandable member to occupy substantially the entire interior volume of the gallbladder to allow for the manipulation of substantially all of the gallbladder; and separating attachment of the gallbladder from surrounding tissues while simultaneously manipulating the rigid shaft to reposition the gallbladder in order to expose the dissection plane. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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19. A method for dissecting a gallbladder from surrounding tissue, said method comprising:
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forming a penetration through a wall of the gallbladder; aspirating bile from the interior of the gallbladder; introducing an expandable member on the distal end of a rigid shaft into the interior of the gallbladder; expanding the expandable member until the gallbladder is distended; and separating attachment of the gallbladder from surrounding tissues while simultaneously manipulating the rigid shaft to reposition the gallbladder in order to expose the dissection plane. - View Dependent Claims (20)
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21. A device for manipulating a hollow body structure, said device comprising:
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a rigid shaft having a proximal end and a distal end; an expandable member disposed near the distal end of the shaft; means for selectively expanding the expandable member from an unexpanded configuration to an expanded configuration; a sharp tip and a blunt tip disposed near the distal end of the rigid shaft; means for axially translating the sharp tip relative to the blunt tip, whereby either tip can be selectively exposed at the distal end of the rigid shaft; means near the distal tip of the rigid shaft for aspirating fluid to near the proximal end of the shaft, wherein the aspirating means includes an axial lumen extending from the distal end to the proximal end of the rigid shaft and a separate tube coaxially mounted with an axial lumen extending from the distal end to the proximal end of the rigid shaft; and a sleeve mounted coaxially over the rigid shaft and means for aspirating the interior of the sleeve, wherein the sleeve has a resilient tip which can conform to the exterior of the body structure, wherein the resilient tip extends over at least a portion of the expandable member, so that the tip will be compressed when the expandable member is inserted into a body structure. - View Dependent Claims (22, 23, 24, 25, 26, 27)
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28. A device for manipulating a hollow body structure, said device comprising:
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a rigid shaft having a proximal end and a distal end; means disposed near the distal end of the rigid shaft for piercing a wall of the hollow body structure; an expandable member disposed near the distal end of the rigid shaft; means for selectively expanding the expandable member from an unexpanded configuration to an expanded configuration; and means for aspirating fluid from near the distal end of the shaft to the proximal end, wherein the means for aspirating comprises an aspiration lumen within the rigid shaft, wherein the means for aspirating further comprises a sleeve mounted coaxially over the rigid shaft, wherein the sleeve has a resilient tip which can conform to the exterior of the body structure, wherein the resilient tip extends over at least a portion of the expandable member, so that the tip will be compressed when the expandable member is inserted into a body structure. - View Dependent Claims (29, 30, 31)
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Specification