Aayush Malla,Charles Stanislaus,Joshua David Rubin,William C. Brunnett
申请号：
US12771699
公开号：
US08273097B2
申请日:
2010.04.30
申请国别(地区):
US
年份:
2012
代理人:
摘要：
A surgical tissue cutting instrument having an irrigation system comprises an elongate tubular outer member having a proximal end, a distal end and an opening at the distal end, an elongate inner member rotatably disposed within the outer member and having a proximal end, a distal end and a cutting element at the distal end exposed from the opening, a handpiece mounted to the proximal ends of the outer and inner members, and an irrigation system comprising an irrigation channel composed of a first irrigation passage within the handpiece and a second irrigation passage within the thickness of the annular wall of the outer member, and a sleeve having a rearward end disposed over a front end of the handpiece and a forward end disposed over the outer member adjacent an outlet opening of the second irrigation passage near the distal end of the outer member. The sleeve is disposed over the outer member with a snug fit while allowing communication through the outlet opening of the second irrigation passage, whereby the irrigation channel is enclosed and sealed between an inlet port of the first irrigation passage and the outlet opening of the second passage. The inlet port is connectible with a source of irrigation fluid for flow through the irrigation channel to be discharged from the outlet opening near the distal end of the outer member.
