Electrosurgical instrument
Patent 4545375 Issued on October 8, 1985. Estimated Expiration Date: 
June 10, 2003. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
June 10, 2003. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesInventorAssigneeApplicationNo. 06/503110 filed on 06/10/1983US Classes:606/42, With switching or power control200/302.2, Seal for push button actuator200/343, Hinged button (e.g., piano key)200/517Including additional actuatorExaminersPrimary: Cohen, Lee S.Attorney, Agent or FirmInternational ClassesA61B 18/14 (20060101)H01H 9/06 (20060101) H01H 9/02 (20060101) AbstractAn electrosurgical instrument which includes an inner, insulated, elongated switching core integrally molded about an elongated main contact wire which extends continually throughout the core and extends from both the proximal and distal ends of the core. An electrode blade is connected to the distally extending portion of the main contact wire. Two selectively operable electrical contact switches are easily mounted on the core in a longitudinally spaced apart relation. Two windows are provided in the core, each exposing a portion of the main contact wire. Each window is respectively positioned beneath a portion of each of the contact switches so that one or the other of the switches may be selectively moved into engagement with the main contact wire. One of the switches provides a suitable electrical cutting signal to the electrode blade when in contact with the main contact wire, while the other switch provides a suitable electrical coagulation signal to the blade when in contact with the main contact wire.A resilient tubular sleeve member may be mounted with a tight sealing fit over the inner core to encapsulate the switching core in order to prevent fluid from entering the switching area of the electrosurgical instrument.Other References
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