Did You Know...
...that the Slinky toy was the result of a failed attempt by engineer Richard James to produce an antivibration device for ship instruments? His goal was to develop a spring that would instantaneously counterbalance the wave motion that rocks a ship at sea. Instead, he developed the Slinky.
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US Patent 4938761 - Bipolar electrosurgical forceps
US Patent Issued on July 3, 1990
Estimated Patent Expiration Date:
March 6, 2010Estimated 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.
Estimated Patent Expiration Date:
March 6, 2010Estimated 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.AbstractA bioplar electrosurgical forceps carries a thermocouple junction at the distal end of each of two mutually opposed prongs. The junctions are formed by welding a constantan wire directly to the ferrous metal prongs, thereby avoiding the need for electrical isolation.Other References
| InventorAssigneeApplicationNo. 319050 filed on 03/06/1990US Classes:606/51, With forceps or tweezers606/40, Coagulation606/52With forceps or tweezersField of Search219/230, With tip cooling, clamping, or lighting means219/241, With thermal control means606/43, Depilation606/48, Bipolar electrodes606/51, With forceps or tweezers606/52, With forceps or tweezers606/36, Depilation606/39, Cutting606/38, With feed back control606/40, Coagulation606/37Combined cutting-coagulationExaminersPrimary: Cohen, Lee S.Attorney, Agent or FirmUS Patent References3685518, 4041952, Electrosurgical forcepsIssued on: 08/16/1977 Inventor: Morrison, Jr. , et al.4411266, Thermocouple radio frequency lesion electrode Issued on: 10/25/1983 Inventor: Cosman4671274, Bipolar electrosurgical instrument Issued on: 06/09/1987 Inventor: Sorochenko4685459, Device for bipolar high-frequency coagulation of biological tissue Issued on: 08/11/1987 Inventor: Koch , et al.4686980Disposable bipolar instrument Issued on: 08/18/1987 Inventor: Williams , et al. International ClassA61B 017/39 |
