Method and apparatus for abrading tissue
First Claim
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1. An apparatus for abrading tissue during arthroscopic surgical procedures, said apparatus comprising:
- a first inner rotatable tube assembly having a first proximal end and a first distal end, said first inner rotatable tube assembly having an abrading head at said first distal end and an internal aspiration port defined by at least a first sidewall, said internal aspiration port being positioned proximal said abrading head;
a second outer tube assembly having a second proximal end and a second distal end, said second outer tube assembly having an external aspiration port defined by at least a second sidewall; and
said internal aspiration port being rotatably positioned substantially adjacent to said external aspiration port, wherein upon rotating said first rotatable tube assembly, said first sidewall cooperates with said second sidewall to cut debris as the debris and fluid is drawn into and passes through said external and internal aspiration ports.
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Abstract
A method and apparatus for abrading tissue during arthroscopic surgery includes a first rotatable tube assembly and a second tube assembly. The first rotatably tube assembly has a first proximal end and a first distal end with an abrading head at the first distal end. The second tube assembly has a second proximal end and a second distal end with an external aspiration port passing through a sidewall of the second tube assembly. The apparatus further includes a self-cleaning mechanism which is operable to self-clean the aspiration port in the apparatus to pass fluid and debris.
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Citations
17 Claims
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1. An apparatus for abrading tissue during arthroscopic surgical procedures, said apparatus comprising:
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a first inner rotatable tube assembly having a first proximal end and a first distal end, said first inner rotatable tube assembly having an abrading head at said first distal end and an internal aspiration port defined by at least a first sidewall, said internal aspiration port being positioned proximal said abrading head; a second outer tube assembly having a second proximal end and a second distal end, said second outer tube assembly having an external aspiration port defined by at least a second sidewall; and said internal aspiration port being rotatably positioned substantially adjacent to said external aspiration port, wherein upon rotating said first rotatable tube assembly, said first sidewall cooperates with said second sidewall to cut debris as the debris and fluid is drawn into and passes through said external and internal aspiration ports. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An apparatus for abrading tissue during arthroscopic surgical procedures, said apparatus comprising;
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a first inner rotatable tube assembly having a first proximal end and a first distal end, said first inner rotatable tube assembly having an abrading head at said first distal end and an internal aspiration port defined by at least a first sidewall, said internal aspiration port being positioned proximal said abrading head; and a second outer tube assembly having a second proximal end and a second distal end, said second outer tube assembly defining an opening for exposing at least a portion of said abrading head and a separate external aspiration port passing through a sidewall of said second outer tube assembly, wherein said separate external aspiration port cooperates with said internal aspiration port to draw in fluid and cut debris. - View Dependent Claims (12, 14)
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13. An apparatus for abrading tissue during arthroscopic surgical procedures, said apparatus comprising:
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a first inner rotatable tube assembly having a first proximal end and a first distal end, said first inner rotatable tube assembly having an abrading head at said first distal end d an internal aspiration port defined by at least a first sidewall, said internal aspiration port being positioned proximal said abrading head; and a second outer tube assembly having a second proximal end and a second distal end, said second outer tube assembly defining an opening exposing at least a portion of said abrading head and an external aspiration port passing through a sidewall of said second outer tube assembly, said external aspiration port is positioned substantially about a circumference of said second tube assembly, wherein said external aspiration port cooperates with said internal aspiration port to draw in fluid and cut debris.
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15. An apparatus for abrading tissue during arthroscopic surgical procedures, said apparatus comprising:
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a first inner rotatable tube assembly having a first proximal end and a first distal end, said first inner rotatable tube assembly having an abrading head at said first distal end and an internal aspiration port defined by at least a first sidewall, said internal aspiration port being positioned proximal said abrading head; and a second outer tube assembly having a second proximal end and a second distal end, said second outer tube assembly defining an opening for exposing at least a portion of said abrading head and an external aspiration port passing through a sidewall of said second outer tube assembly; and an inner bearing surface positioned substantially adjacent said second distal end such that said external aspiration port is positioned proximally from said inner bearing surface, wherein said external aspiration port and said internal aspiration port cooperate to draw in fluid and cut debris.
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16. An apparatus for abrading tissue during arthroscopic surgical procedures, said apparatus comprising:
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a first inner rotatable tube assembly having a first proximal end and a first distal end, said first inner rotatable tube assembly having an abrading head at said first distal end and an internal aspiration port substantially adjacent to said abrading head; and a second outer tube assembly having a second proximal end and a second distal end, said second outer tube assembly having an inner bearing surface substantially adjacent to said second distal end and an external aspiration port substantially proximal to said inner bearing surface, wherein said first inner rotatable tube assembly is operable to be rotatably positioned substantially within said second outer tube assembly whereby said external aspiration port cooperates with said internal aspiration port to form a scissor-like self-cleaning mechanism which is operable to cut and chop debris amid debris and fluid is drawn into said external and internal aspiration ports. - View Dependent Claims (17)
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Specification