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US 4,398,534 AGranted
Electrical surgical knife device
AssigneeOlympus Optical Co., Ltd.
InventorToshihiko Hagiwara
Life of this patent
Estimating the term…
Abstract
An electrical surgical knife device stops supplying an incision current, a coagulation current or a blend current whenever at least two of selection switches are actuated at the same time, said selection switches being provided for selecting the incision current, the coagulation current and the blend current, respectively.
Claims5
An electric surgical knife device comprising:
- current generating means for generating an incision current, coagulation current and blend current;
- current selection means for selecting one of the currents generated by said current generating means;
- detector means coupled to said current selection means for generating an output signal when said current selection means selects any two of the currents generated by said current generating means;
- and
- stop means coupled to said detector means for stopping the current generation by said current generating means in response to the output signal from said detector means.
2 more elements
Dependencies are inferred from the claim text.