Medical treatment instrument

A medical treatment instrument used for coagulating and cutting the patient's body tissue, the medical treatment instrument comprising:

• a treatment portion disposed at the distal end of the treatment instrument, the treatment portion being supported capable of being opened and closed, comprising a pair of grasp portions for grasping the patient' body tissue;
• a frontal operating portion disposed at the proximal end of the treatment instrument, the operating portion operating the pair of grasp portion to be opened and closed;
• a heat generating portion provided at least one of the grasp portions, the heat generating portion being current-carried to coagulate a patient's body tissue grasped between the grasp portions;
• and
• a cutting portion disposed at the each grasp portion to cut the patient's body tissue,
• wherein the cutting portion is protruded on one side of the grasp portions in the treatment portion toward the other side of the grasp portions, and comprises a heat treatment protrusion portion for thermally treating the patient's body tissue and a receiving portion formed at the other side of the grasp portions and receiving the protrusion portion.

A medical treatment instrument used for coagulating and cutting the patient's body tissue, the medical treatment instrument comprising:

• a treatment portion disposed at the distal end of the treatment instrument, the treatment portion being supported capable of being opened and closed and comprising a pair of grasp portions for grasping the patient's body tissue;
• a frontal operating portion arranged at the proximal end of the treatment instrument, the operating portion operating the pair of grasp portions to be opened and closed;
• and
• a heat generating portion provided at least at one of the grasp portions, the heat generating portion being current-carried to coagulate the patient's body tissue grasped between the grasp portions,
• wherein the grasp portions each have an insert portion for inserting cutting means for cutting the patient's body tissue.

A medical treatment instrument used for coagulating and cutting the patient's body tissue, the medical treatment instrument comprising:

• a treatment portion arranged at the distal end of the treatment instrument, the treatment portion being supported capable of being opened and closed and comprising a pair of grasp portions for grasping the patient's body tissue;
• a frontal operating portion disposed at the proximal end of the treatment instrument, the operating portion operating the pair of grasp portions to be opened and closed;
• and
• a heat generating portion provided at least at one of the grasp portions, the heat generating portion being current-carried to coagulate the patient's body tissue grasped between the grasp portions,
• wherein the heat generating portion is heater means consisting of an insulation material.

A power supply unit connected to a medical treatment instrument used for coagulating and cutting the patient's body tissue,

• wherein the treatment instrument comprises a treatment portion arranged at the distal end thereof, the treatment portion being supported capable of being opened and closed and comprising a pair of grasp portions for grasping the patient's body tissue;
• a frontal operating portion arranged at the proximal end of the treatment instrument, the operating portion operating the pair of grasp portions to be opened and closed;
• and a heat generating heater portion provided at least at one of the grasp portions, the heater portion being current-carried to coagulate and cut the patient's body tissue grasped between the grasp portions, the power supply unit comprising:
• resistance value measuring means for measuring a resistance value of the heater portion;
• and
• control means for controlling power supply to the heater portion according to an initial resistance value of the heater portion.

A coagulating treatment instrument used for coagulating the patient's body tissue, the coagulating treatment instrument comprising:

• a treatment portion arranged at the distal end of the treatment instrument, the treatment portion being supported capable of being opened and closed and comprising a pair of grasp portions for grasping the patient's body tissue;
• a frontal operating portion arranged at the proximal end of the treatment instrument, the operating portion operating the pair of grasp portions to be opened and closed;
• a heater portion provided at least at one of the grasp portions, the heater portion being current-carried and heated to coagulate the patient's body tissue grasped between the grasp portions;
• and
• an adhesion preventing treatment portion for covering the periphery of the heater portion, thereby to prevent adhesion of the patient's body tissue, the adhesion preventing treatment portion being detachably mounted to the grasp portions.

A coagulating treatment instrument used for coagulating the patient's body tissue, the coagulating treatment instrument comprising:

• a treatment portion arranged at the distal end of the treatment instrument, the treatment portion being supported capable of being opened and closed and comprising a pair of grasp portions for grasping the patient's body tissue;
• a frontal operating portion arranged at the proximal end of the treatment instrument, the operating portion operating the pair of grasp portions to be opened and closed;
• and
• a heater portion provided at least at one of the grasp portions, the heater portion being current-carried to coagulate the patient's body tissue grasped between the grasp portions,
• wherein the treatment instrument has a coagulation surface for coagulating the patient's body tissue provided at least at the heater portion or either one of the grasp portions;
• and the coagulation surface comprises a distal end abutting against the counterpart member of the grasp portions each other immediately after closing of the grasp portions;
• and a proximal end having a gap provided between the proximal end and the counterpart member of the grasp portion.

A coagulating treatment instrument used for coagulating the patient's body tissue, the coagulating treatment instrument comprising:

• a treatment portion arranged at the distal end of the treatment instrument, the treatment portion being supported capable of being opened and closed and comprising a pair of grasp portions for grasping the patient's body tissue;
• a frontal operating portion arranged at the proximal end of the treatment instrument, the operating portion operating the pair of grasp portions to be opened and closed;
• a heater portion provided at least one of the grasp portions, the heater portion being current-carried;
• bipolar electrically conducting members connected to the heater portion, these bipolar electrically conducting members being insulated from each other and arranged at a main body of the treatment instrument;
• and
• exposure preventing means for preventing the electrically conducting member from being exposed to the outside of the main body of the treatment instrument.

In a coagulating/cutting system comprising a medical instrument used to coagulate and incise a living tissue and a control element for controlling the operation of the instrument,

• the instrument including
• a first engaging portion having a first engaging surface constituting an engaging surface for holding the living tissue,
• a second engaging portion having a second engaging surface constituting an engaging surface capable of holding the living tissue in conjunction with the first engaging surface,
• a holding drive element capable of moving the first and second engaging portions toward and away from each other to hold the living tissue, and
• a heating unit adapted to heat the first engaging portion when energized,
• the control element including
• a current supply element for supplying current to the heating unit, and
• a setting element capable of adjusting the current supply element to a temperature at which the living tissue can be incised as the heating unit is heated when the living tissue is held between the first and second engaging surfaces by means of the holding drive element.

In a coagulating/cutting system comprising a medical instrument used to coagulate and incise a living tissue and a control element for controlling the operation of the instrument,

• the instrument including
• a first engaging portion having a first engaging surface constituting an engaging surface for holding the living tissue,
• a second engaging portion having a second engaging surface constituting an engaging surface capable of holding the living tissue in conjunction with the first engaging surface,
• a holding drive element capable of moving the first and second engaging portions toward and away from each other to hold the living tissue, and
• a heating unit adapted to heat the first engaging portion when energized,
• the control element including
• a current supply element for supplying current to the heating unit,
• a first setting element capable of adjusting the current supply element to a temperature at which the living tissue can be coagulated as the heating unit is heated when the living tissue is held between the first and second engaging surfaces by means of the holding drive element, and
• a second setting element capable of adjusting the current supply element to a temperature at which the living tissue can be incised as the heating unit is heated when the living tissue is held between the first and second engaging surfaces by means of the holding drive element.

A coagulating/cutting instrument used to coagulate and incise a living tissue, comprising:

• a first engaging portion having a first engaging surface constituting a protrusion holding the living tissue;
• a second engaging portion having a second engaging surface constituting an engaging surface capable of holding the living tissue in conjunction with the first engaging surface;
• a holding drive element capable of moving the first and second engaging portions to hold the living tissue, and
• a heating unit adapted to heat the first engaging portion when energized.

A surgical instrument, comprising:

• a distal end portion including a pair of holding portions for holding a living tissue, said holding portion having a contact surface that is brought into contact with said living tissue;
• and
• a manual operating portion for opening or closing said holding portions;
• wherein at least one of said holding portions has a heat generating portion formed in said contact portion with the living tissue, and
• the contact surface of the heat generating portion with the living tissue is smaller in the contact area with the living tissue than the contact surface of the other holding portion with the living tissue.