公开(公告)号：DE3788099D1

公开(公告)日：1993-12-16

申请号：DE3788099

申请日：1987-04-02

Applicant: VALLEYLAB INC

Inventor： BROADWIN ALAN ,  KREIZMAN ALEXANDER ,  PUIAM CHANA ,  PODANY VACLAV ,  EMERY LEONARD

IPC: A61B18/00 ,  A61B17/00 ,  A61B17/22 ,  A61B18/12 ,  A61M1/00 ,  B06B1/02 ,  A61B17/20

Abstract: A method and apparatus for periodically interrupting ultrasonic power applied to a ultrasonically vibrating tip to control its amplitude between high and low or zero amplitudes with a selectible duty cycle and repetition rate provides enhanced fragmentation and improves surgical control. The duty cycle may also vary as a function of a remotely sensed parameter such as tissue temperature.

公开(公告)号：DE3788099T2

公开(公告)日：1994-03-03

申请号：DE3788099

申请日：1987-04-02

Applicant: VALLEYLAB INC

Inventor： BROADWIN ALAN ,  KREIZMAN ALEXANDER ,  PUIAM CHANA ,  PODANY VACLAV ,  EMERY LEONARD

IPC: A61B18/00 ,  A61B17/00 ,  A61B17/22 ,  A61B18/12 ,  A61M1/00 ,  B06B1/02 ,  A61B17/20

Abstract: A method and apparatus for periodically interrupting ultrasonic power applied to a ultrasonically vibrating tip to control its amplitude between high and low or zero amplitudes with a selectible duty cycle and repetition rate provides enhanced fragmentation and improves surgical control. The duty cycle may also vary as a function of a remotely sensed parameter such as tissue temperature.

公开(公告)号：DE3687459T2

公开(公告)日：1993-04-29

申请号：DE3687459

申请日：1986-11-24

Applicant: VALLEYLAB INC

Inventor： KREIZMAN ALEXANDER ,  BROADWIN ALAN

IPC: A61B18/00 ,  A61B17/20 ,  A61F9/007 ,  A61M1/00

Abstract: An improved ultrasonic surgical handpiece includes an angled connecting body between the transducer and operative tip, with the connecting body being bent at a location between the node and antinode at its respective ends and with a second nodal plane support in the transducer section. The vibrating assembly is impedance matched to the frequency of a handpiece employing a straight connecting body of subtantially equal length and dimension whereby straight and angulated handpieces may be interchangeably used in an ultrasonic surgical system employing a common drive and common operative tips. In a preferred embodiment, the ultrasonic transducer has a nodal plane midway between its ends and is supported at this nodal plane.

公开(公告)号：DE3687459D1

公开(公告)日：1993-02-18

申请号：DE3687459

申请日：1986-11-24

Applicant: VALLEYLAB INC

Inventor： KREIZMAN ALEXANDER ,  BROADWIN ALAN

IPC: A61B18/00 ,  A61B17/20 ,  A61F9/007 ,  A61M1/00

Abstract: An improved ultrasonic surgical handpiece includes an angled connecting body between the transducer and operative tip, with the connecting body being bent at a location between the node and antinode at its respective ends and with a second nodal plane support in the transducer section. The vibrating assembly is impedance matched to the frequency of a handpiece employing a straight connecting body of subtantially equal length and dimension whereby straight and angulated handpieces may be interchangeably used in an ultrasonic surgical system employing a common drive and common operative tips. In a preferred embodiment, the ultrasonic transducer has a nodal plane midway between its ends and is supported at this nodal plane.