Importance

Loading Importance Indicators...

Abstract

A tissue aspiration instrumentation system including a hand-supportable tissue aspiration instrument and a cannula assembly. The hand-supportable tissue aspiration instrument has a hand-supportable housing with a stationary tubing connector provided at the rear of the housing and receiving a length of flexible tubing connected to a vacuum source. The cannula assembly is coupled to a cannula drive mechanism disposed within the hand-supportable housing and powered by an external power source (e.g. electrical power signals, pressurized air-streams, etc) so as to periodically exert forces on the cannula base portion along the longitudinal axis of the the cannula assembly (i.e. coaxially exerted on the cannula base portion). These coaxially exerted forces cause the hollow cannula base portion to reciprocate within the cylindrical (cannula base portion) guide tube, while tissue is being aspirated along the cannula lumen, through the lumen formed in the cannula base portion, through the cylindrical guide tube and through the stationary tubing connector, along the flexible tubing towards the vacuum source. The cannula assembly can be of the single cannula or twin cannula design, and the cannula drive mechanism can be powered with pressurized air or gas, or using electromagnetic forces.

Loading the Abstract Image...

First Claim