公开(公告)号：DE19713797A1

公开(公告)日：1997-10-09

申请号：DE19713797

申请日：1997-04-03

Applicant: VALLEYLAB INC ,  UNIV ILLINOIS

Inventor： LAMBRECHT GREGORY H ,  PHILPOTT MICHAEL L ,  RYAN THOMAS P ,  SCHMALTZ DALE F ,  SELLERS JUN ORLANDO

IPC: A61B18/12 ,  A61B17/42 ,  A61B18/14 ,  A61B17/38

Abstract: The instrument includes an extended rigid shaft (14) with a proximal end (15) and a distal end (16), an inner chamber and an outer diameter of 10 mm or less. Also at least three electrodes (17), are arranged movably in the inner chamber. At least one of the electrodes is connected with the first output connection, and at least one other electrode is connected with the second output connection. An operating system (19) is fitted in vicinity of the proximal end (15) of the shaft (14), and is mechanically connected with the electrodes (17), in order that the electrodes travel out and back in relation to the distal end (16). An electric switch makes an electrical circuit through the electrodes and between the first and second output connections.

公开(公告)号：CA2228436C

公开(公告)日：2001-05-08

申请号：CA2228436

申请日：1996-08-12

Applicant: VALLEYLAB INC

Inventor： KENNEDY JENIFER S ,  BUYSSE STEVEN P ,  LANDS MICHAEL J ,  RYAN THOMAS P ,  LUKIANOW S WADE ,  LOEFFLER DONALD R

IPC: A61B17/12 ,  A61B17/28 ,  A61B18/12 ,  A61B18/14 ,  A61B19/00 ,  A61B17/39

Abstract: A clamping force mechanism (10) and its method of use with electrosurgery allow a user to seal and/or joint patient's particular vascular tissue; the mechanism is elongate with user and patient ends (14). An actuator (15) is a t the user end (13) and the effectors are at the patient end (14). Each effect or has a face of an area to contact the particular vascular tissue. A lost moti on connection (18) transfers user actuation to the effectors to hold a predetermined clamping force during electrosurgical tissue sealing. A yieldi ng member (19) in the loss motion connection clamps the particular tissue betwe en the faces with a predetermined force. The yielding member (19) is a spring (20), slip clutch (36) or hydraulic coupling possibly near the actuator (15) . An active electrode is carried on one end effector and a return electrode (2 4) contacts the tissue so an electrosurgical energy supply (25) connected thereacross delivers energy therebetween. A feedback circuit (27) responds t o parameters of energy delivered to tissue. A temperature sensor (28) on one face and an impedance monitor (29) respond to energy delivered. A control (3 0) applies energy to held tissue to seal and/or join it. The method transfers user actuation of the effectors with the lost motion connection (18), maintains clampingforce while sealing and applying electrosurgical energy to seal and/or join held tissue. Energy is applied to a temperature or an impedance. The method shifts the yielding member (19) so the opposing faces (17) clamp the particular tissue therebetween with the force from the spring (20), via a transfer rod or by the hydraulic coupling or the slip clutch (36 ) for a range of pressure.

公开(公告)号：AU718528B2

公开(公告)日：2000-04-13

申请号：AU6529396

申请日：1996-08-12

Applicant: VALLEYLAB INC

Inventor： BUYSSE STEVEN P ,  KENNEDY JENIFER S ,  LANDS MICHAEL J ,  LOEFFLER DONALD R ,  LUKIANOW S WADE ,  RYAN THOMAS P

IPC: A61B17/12 ,  A61B17/28 ,  A61B18/12 ,  A61B18/14 ,  A61B19/00 ,  A61B17/39

Abstract: A clamping force mechanism (10) and its method of use with electrosurgery allow a user to seal and/or joint patient's particular vascular tissue; the mechanism is elongate with user and patient ends (14). An actuator (15) is at the user end (13) and the effectors are at the patient end (14). Each effector has a face of an area to contact the particular vascular tissue. A lost motion connection (18) transfers user actuation to the effectors to hold a predetermined clamping force during electrosurgical tissue sealing. A yielding member (19) in the loss motion connection clamps the particular tissue between the faces with a predetermined force. The yielding member (19) is a spring (20), slip clutch (36) or hydraulic coupling possibly near the actuator (15). An active electrode is carried on one end effector and a return electrode (24) contacts the tissue so an electrosurgical energy supply (25) connected thereacross delivers energy therebetween. A feedback circuit (27) responds to parameters of energy delivered to tissue. A temperature sensor (28) on one face and an impedance monitor (29) respond to energy delivered. A control (30) applies energy to held tissue to seal and/or join it. The method transfers user actuation of the effectors with the lost motion connection (18), maintains clamping force while sealing and applying electrosurgical energy to seal and/or join held tissue. Energy is applied to a temperature or an impedance. The method shifts the yielding member (19) so the opposing faces (17) clamp the particular tissue therebetween with the force from the spring (20), via a transfer rod or by hydraulic coupling or the slip clutch (36) for a range of pressure.