Surgery – Instruments – Cutting – puncturing or piercing
Patent
1997-10-17
1999-04-20
Buiz, Michael
Surgery
Instruments
Cutting, puncturing or piercing
606185, 606187, A61B 1716
Patent
active
058954031
ABSTRACT:
A surgical cutting tool having a "stepped" or "funneled" axial passageway for the evacuation of tissue plugs. The tool is made of a length of cylindrical surgical steel having an axial bore therethrough. The proximal end of the tool terminates in a cutting tip which has a cutting edge sufficient to cut tissue plugs of a desired diameter. The distal end is adapted for connection to a vacuum source. The axial bore has a first inside diameter at the cutting edge, a second inside diameter greater than the first inside diameter forming a first relief near the cutting edge, and a third inside diameter greater than the second inside diameter forming a second relief upstream of the first relief. This funnel configuration from the proximal end to the distal end of the tool allows tissue plugs to be easily evacuated from the tool.
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Buiz Michael
Truong Kevin
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