Apparatus and method for surgical ligation
First Claim
1. An instrument for ligation of tissue comprising:
- a first shaft having a distal portion and a proximal portion;
a second shaft slideably disposed in the first shaft;
a tissue receiving recess at the distal end of the instrument;
a grasper slideably disposed in the first shaft and adapted to extend from the instrument to grasp and retract tissue into the tissue receiving recess;
a ring retainer for receiving at least one elastic ring, the ring retainer comprising a distal segment of the second shaft, the ring retainer having reduced diameter relative to an adjacent second segment of the second shaft; and
a displacement member disposed on the distal end of the first shaft for pushing a ring off the ring retainer and around tissue extending from the tissue receiving recess.
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Accused Products
Abstract
A medical instrument for ligation of tissue and anatomical structures, including fallopian tubes comprises at least two slideable shafts concentrically disposed relative to each other. A first shaft has a tissue receiving recess into which tissue is retracted by a grasper. The grasper is disposed on the end of a second shaft that is extendible from the first shaft. A ring retainer on the second or a third shaft can hold one or more elastic rings that are displaceable by the instrument around tissue extending from the tissue receiving recess. The rings are held on a tapered or necked down part of the instrument so that the rings contribute little or nothing to the largest outer diameter (OD) of the portion of the instrument that is inserted into a patient'"'"'s body. Because the ring or rings do not contribute to the OD of the instrument, the instrument may be constructed to fit within insertion channels of 5 mm or less.
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Citations
31 Claims
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1. An instrument for ligation of tissue comprising:
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a first shaft having a distal portion and a proximal portion; a second shaft slideably disposed in the first shaft; a tissue receiving recess at the distal end of the instrument; a grasper slideably disposed in the first shaft and adapted to extend from the instrument to grasp and retract tissue into the tissue receiving recess; a ring retainer for receiving at least one elastic ring, the ring retainer comprising a distal segment of the second shaft, the ring retainer having reduced diameter relative to an adjacent second segment of the second shaft; and a displacement member disposed on the distal end of the first shaft for pushing a ring off the ring retainer and around tissue extending from the tissue receiving recess. - 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. An instrument for ligation comprising:
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a ring retainer located proximally to a tissue receiving recess, the tissue receiving recess being disposed in the end of an elongate element; a grasper for retracting tissue within the tissue receiving recess disposed proximal the recess and extendible therefrom; a displacement member slideably disposed proximal to the ring retainer and adapted to displace a ring placed on the ring retainer off the ring retainer and around tissue extending from the tissue receiving recess, the displacement member being radially expandable over the exterior surface defining the tissue receiving recess.
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25. An instrument for ligation comprising:
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a ring retainer located proximal to a tissue receiving recess, the tissue receiving recess disposed in the end of an elongate element; a grasper for retracting tissue within the tissue receiving recess disposed proximal to the recess and extendible therefrom; the ring retainer being expandable from a first unexpanded condition to a second, radially expanded condition, a displacement member being slideably disposed on the instrument so that it may displace a ring held on the ring retainer in the second expanded condition around tissue extending from the tissue receiving recess.
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26. An instrument for ligation of tissue comprising:
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an outer shaft having a distal portion and a proximal portion; an inner shaft slideably disposed in the outer shaft; a tissue receiving recess at the distal end of the inner shaft; a grasper slideably disposed in the inner shaft and adapted to extend from the instrument to grasp and retract tissue into the tissue receiving recess; a ring retainer for receiving at least one elastic ring, the ring retainer comprising a first distal segment of the inner shaft, the ring retainer having reduced diameter relative to an adjacent second more distal second segment of the inner shaft; the outer shaft being adapted to expand to receive the second segment of the inner shaft; and a displacement member disposed on the distal end of the outer shaft for pushing a ring off the ring retainer and around tissue extending from the tissue receiving recess. - View Dependent Claims (27)
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28. An instrument for ligation of tissue comprising:
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an outer shaft having a distal portion and a proximal portion; an intermediate shaft slideably disposed in the outer shaft; a tissue receiving recess at the distal end of the intermediate shaft; a grasper slideably disposed in the inner shaft adapted to extend from the instrument to grasp and retract tissue into the tissue receiving recess; a ring retainer for receiving at least one elastic ring, the ring retainer comprising a distal segment of the intermediate shaft having reduced diameter relative to an adjacent distal segment of the intermediate shaft, the ring retainer being radially expandable; an inner shaft slideably disposed in the intermediate shaft for expandably engaging the ring retainer; and a displacement member disposed on the distal end of the outer shaft for pushing a ring off the ring retainer and around tissue extending from the tissue receiving recess. - View Dependent Claims (29)
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30. An instrument for ligation of tissue comprising:
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an outer shaft having a distal portion and a proximal portion; an inner shaft slideably disposed in the outer shaft; a tissue receiving recess at the distal end of the outer shaft; a grasper slideably disposed on the end of the inner shaft and adapted to extend from the instrument to grasp and retract tissue into the tissue receiving recess; a ring retainer for receiving at least one elastic ring, the ring retainer comprising a first distal segment of the inner shaft, the ring retainer disposed adjacent a second more distal second segment of the inner shaft, the second segment comprising the grasper; and a displacement member disposed on the distal end of the outer shaft for pushing a ring off the ring retainer and around tissue extending from the tissue receiving recess. - View Dependent Claims (31)
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Specification