Surgical tissue retrieval instrument
First Claim
1. A surgical instrument for retrieving tissue, comprising:
- an elongated support tube;
a collapsible pouch supported at a distal end of said support tube and having an open end for receiving the tissue to be retrieved;
a belt slidably mounted, on said support tube and formed into a loop slidably attached about said open end of said pouch;
said belt being slidable longitudinally relative to said support tube for expanding said open end of said pouch to receive the tissue and for drawing said open end closed to enclose the tissue in said pouch;
said pouch having a tapered shape for aligning the tissue in a desired orientation therein; and
said pouch being elongated in shape with a length or depth substantially greater than its width at said open end.
1 Assignment
0 Petitions
Accused Products
Abstract
A surgical tissue retrieval instrument has a collapsible pouch at the distal end of an elongated support tube for retrieving internal body tissue through a trocar tube. The instrument includes a belt which is formed into a loop slidably attached about the open end of the pouch. The belt is slidably extendable through the support tube for expanding the open end of the pouch to receive the tissue and retractable into the support tube for drawing the open end of the pouch closed to enclose the tissue in the pouch. The belt has an oblong, e.g., rectangular, cross section oriented with its larger cross-sectional dimension perpendicular to the plane of the loop to provide stability at the open end of the pouch and to enable use of the pouch in a scoop-like manner to place the tissue therein. A portion of the belt is thermally set into a curved configuration to urge the loop into a normally expanded shape with the belt extended from the distal end of the support tube. A belt actuator mechanism includes a reciprocating finger grip and a ratchet mechanism which operates in a toggle-like manner to advance and retract the belt along the support tube to open and close the pouch. The pouch has an elongated tapered shape to align the tissue with the length or depth of the pouch to facilitate the withdrawal of the pouch and tissue through an incision at the trocar site.
295 Citations
44 Claims
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1. A surgical instrument for retrieving tissue, comprising:
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an elongated support tube; a collapsible pouch supported at a distal end of said support tube and having an open end for receiving the tissue to be retrieved; a belt slidably mounted, on said support tube and formed into a loop slidably attached about said open end of said pouch; said belt being slidable longitudinally relative to said support tube for expanding said open end of said pouch to receive the tissue and for drawing said open end closed to enclose the tissue in said pouch; said pouch having a tapered shape for aligning the tissue in a desired orientation therein; and said pouch being elongated in shape with a length or depth substantially greater than its width at said open end. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A surgical instrument for retrieving tissue, comprising:
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an elongated support tube; a collapsible pouch supported at a distal end of said support tube and having an open end for receiving the tissue to be retrieved; a belt slidably mounted on said support tube and formed into a loop slidably attached about said open end of said pouch; said belt being slidable longitudinally relative to said support tube for expanding said open end of said pouch to receive the tissue and for drawing said open end closed to enclose the tissue in said pouch; and said pouch having an upper straight portion with parallel sides adjacent to said open end and a lower tapered portion for aligning the tissue in a desired orientation therein. - View Dependent Claims (15, 16, 25)
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17. A surgical instrument for retrieving internal body tissue from a body cavity, comprising:
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an elongated support tube; a collapsible pouch secured to the distal end of said support tube and having an open end for receiving the tissue to be retrieved; a belt slidably received in said support tube and formed into a loop slidably attached about said open end of said pouch; said belt being slidably extendable from said support tube for expanding said open end of said pouch to receive the tissue and retractable into said support tube for drawing said open end closed to enclose the tissue in said pouch; said pouch having a tapered shape for aligning the tissue in a desired orientation therein; and said pouch being elongated in shape with a length or depth substantially greater than its width at said open end. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37)
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38. A surgical instrument for retrieving internal body tissue from a body cavity, comprising:
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an elongated support tube; a collapsible pouch secured to the distal end of said support tube and having an open end for receiving the tissue to be retrieved; a belt slidably received in said support tube and formed into a loop slidably attached about said open end of said pouch; said belt being slidably extendable from said support tube for expanding said open end of said pouch to receive the tissue and retractable into said support tube for drawing said open end closed to enclose the tissue in said pouch; and said pouch having an upper straight portion with parallel sides adjacent to said open end and a lower tapered portion for aligning the tissue in a desired orientation therein. - View Dependent Claims (39, 40)
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41. A tissue retrieval pouch for endoscopic surgery, comprising:
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a collapsible pouch having an open end for receiving the tissue to be retrieved; said pouch having a tapered shape for aligning the tissue in a desired orientation therein; and said pouch being elongated in shape with a length or depth substantially greater than its width at said open end.
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42. A tissue retrieval pouch for endoscopic surgery, comprising:
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a collapsible pouch having an open end for receiving the tissue to be retrieved; said pouch having a tapered shape for aligning the tissue in a desired orientation therein; and said pouch having a straight portion with parallel sides adjacent to said open end and a tapered portion with converging sides for aligning the tissue in a desired orientation therein. - View Dependent Claims (43)
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44. A surgical instrument for retrieving internal body tissue from a body cavity, comprising:
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an elongated support tube; a collapsible pouch secured to the distal end of said support tube and having an open end for receiving the tissue to be retrieved; a belt slidably received in said support tube and formed into a loop slidably attached about said open end of said pouch; said belt being slidably extendable from said support tube for expanding said open end of said pouch to receive the tissue and retractable into said support tube for drawing said open end closed to enclose the tissue in said pouch; and a wedge-shaped guide member at said distal end of said support tube for engaging said belt and deflecting the opposite sides of said loop outward relative to each other to urge said loop into an expanded shape when said belt is extended from said distal end of said support tube.
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Specification