Patent ID: 6278218
Filing Date: 2001-08-21
Classification: A61B,B06B

Abstract:
An ultrasonic transducer assembly comprising:a transducer housing, said transducer housing comprising a central opening;a transducer stack, said transducer stack comprising:a first and second resonator section, a piezoelectric section between saidfirst and second resonator sections;a velocity transformer, said velocity transformer comprising a proximal end and a distal end, said proximal end coupled to said second resonator section, said distal end comprising:a bore, said bore extending from said distal end of said velocity transformer into said velocity transformer, said bore comprising a threaded portion;a mount, said mount retaining said transducer within said central opening of said housing;a stud, said stud inserted into said threaded portion of said bore, wherein said studs comprises:a proximal threaded portion;a central non-threaded portion adjacent to said proximal threaded portion; a distal threaded portion adjacent to said non-threaded portion, wherein said central portion has a length defined between said proximal threaded portion and said distal threaded portion, whereby said length is selected to tune said transducer assembly from a first frequency to a second desired frequency.