Endoscopic surgical instrument for aspiration and irrigation

Details Endoscopic surgical instrument for aspiration and irrigation Endoscopic surgical instrument for aspiration and irrigation

1994-09-14

1997-03-04

Mendez, Manuel

Surgery

Means for introducing or removing material from body for...

Material introduced into and removed from body through...

604 35, A61M 100

Patent

active

056073917

ABSTRACT:
An endoscopic surgical instrument for aspiration and irrigation of a surgical site is disclosed. Connection ports for irrigation fluid and a suction source are provided which communicate with a single lumen cannula which transports both the irrigation fluid and the suction pressure to the surgical site. A valve mechanism having a novel valve stem and valve arrangement is also disclosed for providing higher pressure capabilities for the instrument. In one embodiment, the single lumen cannula is provided with a sliding sleeve to vary the pressure of the irrigation fluid to provide for high pressure application of the irrigation fluid to perform hydrodissection. The aspiration-irrigation instrument may also include electrocautery capabilities and a detachable cannula assembly for interchanging cannulas having different working tool members. In one embodiment, a sliding outer sleeve is also provided for selectively exposing the working tool members. An insertion port for reception of a surgical instrument which may be utilized with the suction and irrigation device during surgical procedures is also disclosed.

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