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    RESONATOR FOR SURGICAL HANDPIECE
    152.
    发明专利
    RESONATOR FOR SURGICAL HANDPIECE 未知

    公开(公告)号：CA2005877A1

    公开(公告)日：1990-06-20

    申请号：CA2005877

    申请日：1989-12-18

    Applicant: VALLEYLAB INC

    Inventor： BROADWIN ALAN ,  KLEESATTEL CLAUS

    IPC: A61B17/22 ,  A61B18/00 ,  A61M1/00

    Abstract: An ultrasonic resonant vibrator comprising an ultrasonic vibration magnetostrictive transducer (1) and a resonant member (2,3) having a proximal end and a distal end for transmitting ultrasonic vibrations to an operating member (3) which is part of the resonant structure. The vibrator comprises an integral substantially rigid column having a central axis with fins extending radially relative to said axis and having a longitudinal hole defining a tunnel (8) centered along the central axis, wherein at least part of the resonant member is located within the tunnel; and a surgical handpiece incorporating such a vibrator.

    154.
    发明专利
    未知

    公开(公告)号：NO860815L

    公开(公告)日：1987-09-07

    申请号：NO860815

    申请日：1986-03-04

    Applicant: VALLEYLAB INC

    Inventor： KLICEK MICHAEL S

    IPC: A61B20060101 ,  H03K5/156 ,  A61B18/00 ,  A61B18/12 ,  H03K23/00 ,  A61B

    Abstract: An electrosurgical generator 10 comprises a patient circuit which includes an active electrode 12 and a return electrode 14. Means 16 of generator 10 generates a pulse train and includes an MXN storage device U 1 having M memory locations where M > 1 and each location having N storage positions where N ≥ 1. The storage device stores at least one K-bit binary signal which is sequentially put out from the storage device. An electrosurgical signal generating means which in response to the K-bit binary signal generates an electrosurgical signal which is applied to the patient circuit.

    APARATO GENERADOR ELECTROQUIRURGICO
    156.
    发明专利
    APARATO GENERADOR ELECTROQUIRURGICO 未知

    公开(公告)号：ES8705214A1

    公开(公告)日：1987-05-01

    申请号：ES549756

    申请日：1985-12-10

    Applicant: VALLEYLAB INC

    IPC: A61B18/00 ,  A61B18/12 ,  A61B17/36

    Abstract: APARATO GENERADOR ELECTROQUIRURGICO. COMPRENDE: UN DISPOSITIVO APLICADOR MANUAL (12) QUE ESTA PROVISTO DE DOS INTERRUPTORES (32, 34) SITUADOS EN EL PARA CAMBIAR EL NIVEL DE LA POTENCIA DE SALIDA SUMINISTRADA AL PACIENTE A PARTIR DEL GENERADOR; UN ELEMENTO DE CONMUTACION (36) CONECTADO ENTRE LAS LINEAS ACTIVAS DE COAGULACION Y UN SEGUNDO ELEMENTO DE CONMUTACION (38) CONECTADO ENTRE LAS LINEAS DE COAGULACION Y DE CORTE; HABIENDOSE PREVISTO UN CONECTOR (20) QUE INCLUYE ELEMENTOS DE CONEXION (40, 42, 44) CONECTADOS RESPECTIVAMENTE A LOS TERMINALES DE UN CIRCUITO DECODIFICADOR. TIENE APLICACIONES EN CIRUGIA MEDICA.

    RETURN ELECTRODE MONITORING SYSTEM FOR USE DURING ELECTROSURGICAL ACTIVATION
    159.
    发明专利
    RETURN ELECTRODE MONITORING SYSTEM FOR USE DURING ELECTROSURGICAL ACTIVATION 未知

    公开(公告)号：CA1200287A

    公开(公告)日：1986-02-04

    申请号：CA413756

    申请日：1982-10-19

    Applicant: VALLEYLAB INC

    Inventor： NEWTON DAVID W ,  HULETT FREDERIC M III ,  OVENS CHRISTOPHER

    IPC: A61B18/12 ,  A61N1/08 ,  A61B17/39 ,  G01R27/14

    Abstract: IMPROVED RETURN ELECTRODE MONITORING SYSTEM A return electrode monitoring system for use with a patient return electrode adapted for contacting a patient, the return electrode having two, spaced apart conductors attached thereto for connecting the electrode to a generator of electrosurgical current which passes through the electrode, the system comprising means for applying a monitoring current through the conductors to the electrode; detecting means responsive to the monitoring current for producing a signal which is a function of the impedance between the two conductors, the detecting means including means for substantially eliminating any effect the electrosurgical current might have on the production of the signal when the generator is operational and the patient is in contact with the electrode; means for establishing a desired range having at least an upper limit for the impedance; and determining means responsive to the signal for determining whether the impedance is within the desired range. The system also includes means for establishing a desired range having an upper limit and a lower limit for the impedance when the patient is in contact with the electrode elements; determining means responsive to the signal for determining whether the impedance is within the desired range; and adjusting means for adjusting the upper limit to adapt the system to the particular impedance of the patient in response to the particular impedance occurring within the desired range.

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