A - Human Necessities – 61 – B
Patent
A - Human Necessities
61
B
A61B 18/14 (2006.01)
Patent
CA 2198313
A replaceable accessory and cord set (10) for an electrosurgical instrument (11) that has a proximal end (15) handle (26) for holding by the surgeon and distal end (16) effectors for delivery of electrosurgery to a patient (12). A cord (17)electrically couples an electrosurgical generator (14) to the instrument with two or more conductors (18). A handswitch (19) with normally open contacts (20) is near the proximal end (15). One of the contacts (20) attaches to an active conductor and another of the conductors connected to the other contact (21). A receptacle (22) on the handswitch (19) connects electrically to the contact (20). A terminal (23) on the electrosurgical instrument (11) conjugates with the receptacle (22) in electrical contact (20) with the active conductor. An insulated support (24) on the handswitch (19) engages the instrument preventing relative movement. A button on the support (24) is accessible to the surgeon, but remote from the receptacle (22) and the terminal (23). The button is electrically isolated from the contacts (20), the receptacle (22), the terminal (23) and the conductors. The button moves on the support (24) for closing the contacts (20) and is positioned for control by the surgeon's finger. The handle (26) is insulated and the effectors are located at the distal end (16) and could include scissors (28), graspers or hooks. The effectors are in a bipolar circuit with a return on one effector connected to one of the return conductors (18''') for completing the circuit. The effectors when in a monopolar circuit have a rerturn pad (29) on the patient (12) as a part of the circuit. The support (24) electrically insulates the button and the handswitch (19) preventing leakage to the surgeon. The generator connects to the return conductor (18") coupled to one of the effectors for return of energy. The support (24) may have a pressure sensitive adhesive (30) thereon to secure the button on the handle (26). A plug (31) removeably connects the conductors to thegenerator. The handswitch (19) controls delivery a coagulating wave form. The instrument is elongate between the handle (26) and the effectors so that laparoscopic electrosurgery may be performed.
Heard David N.
Lindemann Russell W.
Smart & Biggar
Valleylab Inc.
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