Medical treatment instrument
First Claim
Patent Images
1. A medical treatment instrument used for coagulating and cutting a patient'"'"'s body tissue, the medical treatment instrument comprising:
- a treatment portion, which is arranged at a tip of the treatment instrument, and which comprises a grasp portion including a pair of grasp members, which are openable and closeable with respect to each other, for grasping the patient'"'"'s body tissue;
an operating portion which is arranged at a proximal end of the treatment instrument, and which is operable to open and close the pair of grasp members;
a heat generating portion which is provided at a first grasp member of the pair of grasp members, and which generates heat in accordance with current supplied thereto; and
a cutting member which is disposed at the first grasp portion in contact with the heat generating portion and projecting toward a second grasp member of the pair of grasp members, and which is heated by the heat generating portion to cut the patient'"'"'s body tissue grasped between the grasp members;
wherein the cutting member is shaped so as to be capable of cutting the patient'"'"'s body tissue only when the heat generating portion is activated.
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Accused Products
Abstract
According to the present invention, a heat generating element to be current-carried is provided at a grasp portion on the tip side of a treatment portion, the patient'"'"'s body tissue grasped between a pair of grasp portions is coagulated by heat of the heat generating element, and a metal scissors blade for cutting the patient'"'"'s body tissue is provided on the rear side of the grasp portion in the treatment portion.
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Citations
29 Claims
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1. A medical treatment instrument used for coagulating and cutting a patient'"'"'s body tissue, the medical treatment instrument comprising:
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a treatment portion, which is arranged at a tip of the treatment instrument, and which comprises a grasp portion including a pair of grasp members, which are openable and closeable with respect to each other, for grasping the patient'"'"'s body tissue; an operating portion which is arranged at a proximal end of the treatment instrument, and which is operable to open and close the pair of grasp members; a heat generating portion which is provided at a first grasp member of the pair of grasp members, and which generates heat in accordance with current supplied thereto; and a cutting member which is disposed at the first grasp portion in contact with the heat generating portion and projecting toward a second grasp member of the pair of grasp members, and which is heated by the heat generating portion to cut the patient'"'"'s body tissue grasped between the grasp members; wherein the cutting member is shaped so as to be capable of cutting the patient'"'"'s body tissue only when the heat generating portion is activated. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A coagulating/cutting system comprising:
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a medical instrument used to coagulate and incise a living tissue; and a control element for controlling operation of the medical instrument, wherein the medical instrument comprises; a first engaging portion comprisinci a protrusion having a first engaging surface; a second engaging portion having a second engaging surface which is adapted to cooperate with the first engaging surface to hold the living tissue; a holding drive element which is operable to move the first and second engaging portions toward and away from each other to hold the living tissue; and a heating unit which is provided in the first engaging portion in contact with the protrusion, and which heats the protrusion when energized; wherein the control element comprises; a current supply element for supplying current to the heating unit; a first setting element for adjusting the current supply element to set a temperature of the heating unit to a temperature at which the living tissue is coagulated when the living tissue is held between the first and second engaging surfaces; and a second setting element for adjusting the current supply element to set a temperature of the heating unit to a temperature at which the living tissue is incised when the living tissue is held between the first and second engaging surfaces; and wherein the first engaging surface is shaped such that the medical instrument is only capable of incising the living tissue when the temperature of the heating unit is set to the temperature at which the living tissue is incised. - View Dependent Claims (10, 11)
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12. A coagulating/cutting instrument used to coagulate and incise a living tissue, comprising:
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a first engaging portion comprising a protrusion having a first engaging surface; a second engaging portion having a second engaging surface which is adapted to cooperate with the first engaging surface to hold the living tissue; a holding drive element which is operable to move the first and second engaging portions to hold the living tissue, and a heating unit which is provided in the first engaging portion in contact with the protrusion and which heats the protrusion when energized; wherein the first engaging surface is shaped such that the coagulating/cutting instrument is capable of incising the living tissue held between the first and second engaging portions only when the protrusion is heated by the heating unit. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
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21. A surgical instrument, comprising:
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a distal end portion including a pair of holding portions for holding a living tissue, each of said holding portions having a contact surface that is adapted to be brought into contact with said living tissue; and a manual operating portion for opening and closing said holding portions; wherein a first holding portion of said pair of holding portions comprises a heat generating portion which generates heat, and a protrusion which comprises the contact surface of the first holding portion and which is in contact with the heat generating portion to be heated by the heat generating portion; and wherein the contact surface of the first holding portion has a contact area with the living tissue that is smaller than a contact area with the living tissue of the contact surface of a second holding portion of the pair of holding portions that does not include the heat generating portion, and the protrusion is shaped such that the surgical instrument is capable of incising the living tissue only when the protrusion is heated by the heat generating portion. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29)
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Specification