Patent ID: 6299591
Filing Date: 2001-10-09
Classification: A61B,A61F,A61M

Abstract:
An ultrasonic surgical instrument for supplying infusion fluid from a source to an operating to be accessed through an opening in a wall, emulsifying tissue from the operating site with ultrasonic energy and removing material from the site by an aspiration flow force from a source comprising:a generator of ultrasonic energy;a needle for receiving the ultrasonic energy, said needle having an aspiration inlet port formed by an opening in only one side of the needle at the needle distal end at an angle to the needle longitudinal axis to be placed in the area of the operating site and an internal aspiration flow passage to which the aspiration flow force is applied to aspirate tissue into said opening of said aspiration inlet port; anda sleeve surrounding at least a portion of said needle and spaced therefrom for fitting into the opening to the operating site and having an outer portion of compressible material to be engaged by and compressed by the wall to conform to the opening and having a reinforcing member interior of said outer portion to prevent collapse of said sleeve against said needle, the space between said needle and said sleeve for receiving the infusion fluid and having at outlet port for supplying the infusion to the operating site.