Patent ID: 8043229

Claim:
A medical device comprising: a body having a central hollow channel; a piezoelectric transducer received within and secured to the body, said piezoelectric transducer having a hollow portion concentric with said central hollow channel; and a tubular member associated with an in communication with said piezoelectric transducer, said tubular member having a proximal open end formed concentric with said central hollow channel and said hollow portion of said piezoelectric transducer and a distal open end and; wherein said piezoelectric transducer is adapted for vibrating at a frequency to produce an oscillating displacement of the tubular member against tissue, wherein the tubular member is hollow with open ends formed opposite one another and wherein said central hollow channel of said body, said hollow portion of said piezoelectric transducer and said tubular member form a continuous bore extending from a proximal end to a distal end of said medical device, and wherein the tubular member is a Tuohy needle.