Tissue removing instrument and method
First Claim
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1. An instrument for removing tissue, comprising:
- a tubular member structured for connection to a source of suction such that a suction is drawn through said tubular member, said tubular member having an open end defined by an edge sharpened around the circumference thereof for curetting a piece of tissue from a larger tissue mass;
a bur for rotation in said tubular member, said bur being adapted for grinding tissue piece entrained into said tubular member, said ground tissue being carried away and discharged by said suction; and
a tool adapted for rotating said bur and adapted for attachment to said tubular member.
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Abstract
A rotating bur is disposed in a small-diameter tissue removing suction tube to grind tissue drawn into an entrance end of the tube. The bur includes a grinding head recessed from the entrance end, and is closely spaced between the internal sidewalls of the suction tube to grind tissue entrained into the tube. The entrance end of the suction tube includes an annular sharp edge to facilitate removal of tissue strands from a tissue mass. The ground tissue is then conducted through the suction tube by the suction, and discharged into a remotely located container.
92 Citations
29 Claims
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1. An instrument for removing tissue, comprising:
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a tubular member structured for connection to a source of suction such that a suction is drawn through said tubular member, said tubular member having an open end defined by an edge sharpened around the circumference thereof for curetting a piece of tissue from a larger tissue mass; a bur for rotation in said tubular member, said bur being adapted for grinding tissue piece entrained into said tubular member, said ground tissue being carried away and discharged by said suction; and a tool adapted for rotating said bur and adapted for attachment to said tubular member. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An instrument adapted for use with a power-driven tool for removing tissue, comprising:
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a unitary disposable suction tube assembly structured for removable attachment to said power-driven tool, said suction tube assembly including, a) a plastic base molded to cradle a complementary shaped portion of said power-driven tool, the cradle engagement between the base and the power-driven tool providing registration therebetween, b) a clamp for clamping the plastic base to the power-driven tool to maintain said cradle engagement, said clamp being adapted for quick release of the plastic base from the power-driven tool, c) a suction tube having one end adapted for removing tissue, and another end molded in said plastic base, d) a discharge tube connected with respect to said suction tube for defining a passage for carrying tissue bits, said discharge tube being adapted for connection to a source of suction; and a bur connectable to the power-driven tool for rotation, said bur being disposed in said suction tube to grind tissue into small bits, and said cradle engagement between said plastic base and said power-driven tool providing registration of said bur within said suction tube. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A method for removing tissue, comprising the steps of:
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curetting fragments of granulation tissue from a tissue mass using a sharpened end of a hollow tube; rotating a grinding head in the hollow tube to entrain the tissue fragments and to grind the tissue fragments into smaller bits; and utilizing a suction in the tube to remove the ground tissue fragments from the tube. - View Dependent Claims (22, 23, 24, 25, 26, 27)
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28. An instrument adapted for attachment to a tool having a rotating shaft, and adapted for removing granulation tissue, comprising:
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a bur driven by the rotating shaft; a tubular member having a sharpened circular end edge, said tubular member being attachable to the tool for receiving therein and enclosing said bur, said bur being recessed a small distance from the inner sidewalls of the tubular member, and being recessed a small distance from the sharpened circular end edge of the tubular member so that the bur does not protrude beyond the end of the tubular member but yet readily engages tissue curetted by the sharp circular edge, whereby when a tissue strand is formed from a tissue mass by the sharpened edge and entrained in the end of the tubular member, the bur is effective to grind the tissue bit into smaller pieces for removal by suction from the instrument. - View Dependent Claims (29)
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Specification