OPERATIVE INSTRUMENT
First Claim
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1. An operative system for performing coagulation operation and incision operation of an anatomy, comprising:
- forceps having a treating section for treating an anatomy held at an extremity thereof and being provided with a heat-generating body for generating heat to be provided to the anatomy, the heat-generating body having a positive resistance temperature coefficient which increases in electric resistance in proportion to a temperature increase;
a power source for supplying electric power to the heat generating body; and
a control unit for controlling to switch method of controlling the power source such that, at the beginning of the treatment, the power source is controlled so as to supply substantially constant electric power to the heat-generating body so that the treating section performs coagulation operation of the anatomy before the treating section reaches a predetermined incision operation temperature, and that the control method is switched to constant temperature control that keeps the temperature of the heat-generating body at the incision operation temperature when the temperature of the heat-generating body reaches the incision operation temperature.
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Abstract
An operative instrument includes forceps having a treating section for treating an anatomy at an extremity and being provided with a heat-generating body for generating heat to be provided to the anatomy and a power supply unit for supplying electric power to the heat-generating body of the forceps. The operative instrument raises the temperature of the heat-generating body by supplying substantially constant electric power to the heat-generating body. Therefore, coagulation and incision of the anatomy can be performed satisfactorily.
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Citations
21 Claims
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1. An operative system for performing coagulation operation and incision operation of an anatomy, comprising:
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forceps having a treating section for treating an anatomy held at an extremity thereof and being provided with a heat-generating body for generating heat to be provided to the anatomy, the heat-generating body having a positive resistance temperature coefficient which increases in electric resistance in proportion to a temperature increase; a power source for supplying electric power to the heat generating body; and a control unit for controlling to switch method of controlling the power source such that, at the beginning of the treatment, the power source is controlled so as to supply substantially constant electric power to the heat-generating body so that the treating section performs coagulation operation of the anatomy before the treating section reaches a predetermined incision operation temperature, and that the control method is switched to constant temperature control that keeps the temperature of the heat-generating body at the incision operation temperature when the temperature of the heat-generating body reaches the incision operation temperature. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An operative system comprising:
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forceps having a treating section for treating an anatomy and being provided with a heat-generating body at the treating section, the heat-generating body having a positive resistance temperature coefficient which increases in electric resistance in proportion to a temperature increase; a power source for supplying electric power to the heat generating body; and a control unit for controlling the power source so as to continuously supply substantially constant electric power to the heat-generating body to increase the temperature of the heat-generating body to an incision operation temperature, based on the increase in electric resistance of the heat generating body in proportion to the temperature increase. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. An operative system, comprising:
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forceps having a treating section for treating an anatomy held at an extremity thereof and being provided with a heat-generating body for generating heat to be provided to an anatomy, the heat-generating body having a positive resistance temperature coefficient; an output circuit which is a power source unit for supplying electric power to the heat generating body; and a control unit for controlling to switch method of controlling the output circuit such that, at the beginning of the treatment, the output circuit is controlled to supply substantially constant electric power to the heat-generating body of the forceps in order to cause the treating section to continuously perform coagulation operation and incision operation of the anatomy, and when the coagulation operation has completed and the temperature of the heat-generating body has reached a predetermined incision operation temperature, that the method is switched to a constant temperature control that keeps the temperature of the heat generating body to the incision operation temperature in order to perform the incision operation.
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Specification