公开(公告)号：FR2417303A1

公开(公告)日：1979-09-14

申请号：FR7824235

申请日：1978-08-21

Applicant: VALLEYLAB INC

Inventor： HARRIS FRANK W

IPC: A61B18/12 ,  A61N3/00 ,  A61B17/36

公开(公告)号：DE2901153A1

公开(公告)日：1979-07-19

申请号：DE2901153

申请日：1979-01-12

Applicant: VALLEYLAB INC

Inventor： HARRIS FRANK W

IPC: A61B18/12 ,  A61B17/38 ,  H03B1/02

Abstract: A multiple source electrosurgical generator wherein one of the sources may be optimized for desiccation of the patient's tissue, another source may be optimized for fulguration thereof and a third source may be optimized for cutting. All sources operate into a common output circuit and may be actuated either individually or in combination. The sources may also be operated in desiccate only, fulgurate only and cut only modes of operation. The different modes of operation may be selected from a hand-held electrosurgical instrument. An insulated, split patient electrode may be used with the generator where the operating frequency of the desiccate source may be higher than that of the fulgurate or cut sources. A spark detection circuit may also be employed (a) to ensure fulguration when the active electrode is a needle, (b) to prevent neuromuscular stimulation and (c) to ensure continuity of the patient circuit when fulgurating with low levels of current.

公开(公告)号：DE2849422A1

公开(公告)日：1979-05-23

申请号：DE2849422

申请日：1978-11-14

Applicant: VALLEYLAB INC

Inventor： HARRIS FRANK W

IPC: A61B18/00 ,  A61B18/16 ,  G01B7/32 ,  A61B17/38

Abstract: Patient contact area measurement method and apparatus including a first electroconductive contact element adapted for contact with the patient; a second electroconductive contact element separated from the first contact element and also adapted for contact with the patient; and measuring circuitry disposed between the first and second electroconductive contact elements for measuring the area of contact of the patient with respect to the contact elements. The electroconductive contact elements may comprise (a) each electrode of a split electrosurgical patient electrode, (b) the active and patient electrodes employed in electrosurgery or (c) a cryosurgical probe together with a monitor electrode adapted for contact with the patient.

公开(公告)号：DE2901152A1

公开(公告)日：1979-08-23

申请号：DE2901152

申请日：1979-01-12

Applicant: VALLEYLAB INC

Inventor： HARRIS FRANK W

IPC: A61B18/12 ,  A61B17/38

公开(公告)号：CA1235756A

公开(公告)日：1988-04-26

申请号：CA462839

申请日：1984-09-11

Applicant: VALLEYLAB INC

Inventor： HARRIS FRANK W

IPC: A61B18/12 ,  A61B17/39

Abstract: IMPROVED ELECTROSURGICAL GENERATOR An electrosurgical generator having a source of electrosurgical energy connected to a patient and including control circuitry for decreasing the output power from the source with increasing patient impedance, the rate of power decrease being substantially greater than that which would result if the output voltage from the source were maintained constant over the range of increasing patient impedance. The control circuitry may, in particular, decrease the output power over the range of increasing patient impedance in accordance with the square of the impedance.

公开(公告)号：FR2416693A1

公开(公告)日：1979-09-07

申请号：FR7823758

申请日：1978-08-11

Applicant: VALLEYLAB INC

Inventor： HARRIS FRANK W

IPC: A61B18/12 ,  A61N1/08 ,  H02H9/00

Abstract: A multiple source electrosurgical generator wherein one of the sources may be optimized for desiccation of the patient's tissue, another source may be optimized for fulguration thereof and a third source may be optimized for cutting. All sources operate into a common output circuit and may be actuated either individually or in combination. The sources may also be operated in desiccate only, fulgurate only and cut only modes of operation. The different modes of operation may be selected from a hand-held electrosurgical instrument. An insulated, split patient electrode may be used with the generator where the operating frequency of the desiccate source may be higher than that of the fulgurate or cut sources. A spark detection circuit may also be employed (a) to ensure fulguration when the active electrode is a needle, (b) to prevent neuromuscular stimulation and (c) to ensure continuity of the patient circuit when fulgurating with low levels of current.

公开(公告)号：FR2409487A1

公开(公告)日：1979-06-15

申请号：FR7822565

申请日：1978-07-31

Applicant: VALLEYLAB INC

Inventor： HARRIS FRANK W

IPC: A61B18/00 ,  A61B18/16 ,  G01B7/32 ,  A61N3/00

Abstract: Patient contact area measurement method and apparatus including a first electroconductive contact element adapted for contact with the patient; a second electroconductive contact element separated from the first contact element and also adapted for contact with the patient; and measuring circuitry disposed between the first and second electroconductive contact elements for measuring the area of contact of the patient with respect to the contact elements. The electroconductive contact elements may comprise (a) each electrode of a split electrosurgical patient electrode, (b) the active and patient electrodes employed in electrosurgery or (c) a cryosurgical probe together with a monitor electrode adapted for contact with the patient.