Disposable bipolar instrument
Patent 4686980 Issued on August 18, 1987. Estimated Expiration Date: 
April 17, 2006. 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.
April 17, 2006. 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 References 1071978 3140715 3648702 3825004 Electrosurgical forceps Bipolar electrosurgical knife Bipolar electrosurgical knife Forceps Skin approximator Disposable hand piece for surgical lasers InventorsApplicationNo. 06/853150 filed on 04/17/1986US Classes:606/48, Bipolar electrodes606/50Bipolar electrodesExaminersPrimary: Cohen, Lee S.Attorney, Agent or FirmInternational ClassesA61B 17/30 (20060101)A61B 18/14 (20060101) AbstractA disposable bipolar instrument for ophthalmic surgery has a pair of shell halves carrying electrodes. A collar connects the shell halves together, and electrical conductors supply current to and from the respective electrodes. The shell halves are composed of disposable plastic material, as is the connecting collar and cap which connect the parts and hold the wires in place. Squeezing of the shell halves together is guided by a tongue-and-groove type of joint formed between the shell halves by pairs of upstanding walls, the walls having sloped surfaces in respective facing regions to permit deformation of the shell halves together at one end thereof, so as to permit movement of the electorde tips together to perform cauterization. The deformation of the plastic material causes a progressive resistance, thereby permitting a tactile feedback to the user, so that the instrument can be operated where the field of vision of the user is partially or totally obstructed.Other References
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