WO2019207807A1

WO2019207807A1 - Treatment tool and method of manufacturing treatment tool

Info

Publication number: WO2019207807A1
Application number: PCT/JP2018/017335
Authority: WO
Inventors: 塩谷　浩一
Original assignee: オリンパス株式会社
Priority date: 2018-04-27
Filing date: 2018-04-27
Publication date: 2019-10-31

Abstract

This treatment tool includes: a heat exchanger plate 13 that has a first surface and a second surface 132 provided on mutually opposite sides; a heater 15 that has an electrically insulating substrate 16, and an electrical resistance pattern 17 that is formed on, and widthwise inward of, the substrate 16 and generates heat when electric current is passed therethrough; and an electrically insulating adhesive member 14 that is disposed in an adhesive region Ar on the second surface 132 and adheres the heat exchanger plate 13 to the heater 15. The substrate 16 and the adhesive member 14 each has a long shape that extends from a distal end to a base end of the adhesive region Ar. The substrate 16 has a smaller width dimension in the adhesive region Ar than the adhesive member 14. The heat exchanger plate 13 is at a predetermined angle to the second surface 132, and further has an abutting surface 133a to which a widthwise end of the adhesive member 14 and a widthwise end of the substrate 16 abut.

Description

TREATMENT TOOL AND METHOD FOR MANUFACTURING TREATMENT TOOL

The present invention relates to a treatment tool and a method for manufacturing the treatment tool.

2. Description of the Related Art Conventionally, there has been known a treatment tool that treats a target portion by applying energy to a portion to be treated in a living tissue (hereinafter referred to as a target portion) (see, for example, Patent Document 1).
The treatment tool described in Patent Literature 1 includes a treatment unit including a heater, a heat transfer plate, and an adhesive member described below.
The heater is a sheet heater including an electrically insulating substrate having a long shape and an electric resistance pattern that is provided on one surface of the substrate and generates heat when energized. Here, a center line (hereinafter referred to as a pattern center line) that passes through the center position in the width direction of the electric resistance pattern and extends in the longitudinal direction is a center line that extends in the length direction through the center position in the width direction of the substrate (hereinafter referred to as the substrate). To the centerline).
The heat transfer plate has a long shape and is made of a conductive material such as copper. And a heat exchanger plate transmits the heat from a heater to an object part.
The adhesive member is a sheet having a long shape and having good thermal conductivity and electrical insulation. The adhesive member is provided between the heater and the heat transfer plate, and bonds and fixes the heater and the heat transfer plate.

And the treatment part mentioned above is manufactured as shown below, for example.
First, the worker places an uncured adhesive member on one plate surface of the heat transfer plate.
Next, the operator positions the adhesive member. Specifically, the operator moves the adhesive member on one plate surface of the heat transfer plate and visually observes a center line (hereinafter referred to as heat transfer) that extends in the longitudinal direction through the center position in the width direction of the heat transfer plate. A center line (hereinafter referred to as an adhesive member center line) extending in the longitudinal direction through the center position in the width direction of the adhesive member is made to coincide with the plate center line).
Next, the worker places the heater on the adhesive member in a posture in which the electric resistance pattern faces the adhesive member side.
Next, the worker positions the heater. Specifically, the operator moves the heater on the adhesive member and visually matches the substrate center line with the adhesive member center line, in other words, the heat transfer plate center line. That is, by matching the substrate center line with the heat transfer plate center line, the pattern center line matches the heat transfer plate center line, and the heat distribution of the heat transfer plate can be made uniform. Become.
Next, the worker compresses the adhesive member by pressing the heater toward the heat transfer plate and hardens the adhesive member by applying heat. Thereby, the heat transfer plate and the heater are bonded and fixed to each other.

Japanese Patent No. 6177103

However, when the heater is positioned visually, it is difficult to make the substrate center line coincide with the heat transfer plate center line. And when an electrical resistance pattern is located in the position which shifted | deviated from the heat exchanger plate center line, it is difficult to equalize the heat distribution of a heat exchanger plate.
Further, when the heater is positioned, if the heater is moved on the adhesive member, the adhesive member may move along with the movement of the heater. And when an adhesive member moves, an electrical resistance pattern will be located in the position which shifted | deviated from the adhesive member centerline. In particular, in the treatment section described in Patent Document 1, the width dimension of the substrate constituting the heater and the width dimension of the adhesive member are set to be the same. For this reason, when the electrical resistance pattern is positioned at a position shifted from the center line of the adhesive member, the electrical resistance pattern cannot be sufficiently covered by the adhesive member, and the withstand voltage performance between the heat transfer plate and the electrical resistance pattern It is difficult to ensure.
Therefore, there is a demand for a technique capable of positioning the electric resistance pattern with respect to the heat transfer plate while ensuring the withstand voltage performance.

The present invention has been made in view of the above, and an object thereof is to provide a treatment instrument capable of positioning an electric resistance pattern with respect to a heat transfer plate while ensuring a withstand voltage performance, and a method for manufacturing the treatment instrument. To do.

In order to solve the above-described problems and achieve the object, the treatment tool according to the present invention includes a first surface, and a heat transfer plate having a second surface that is opposite to the first surface, A heater having an electrically insulating substrate, an electric resistance pattern formed on the substrate and in the width direction of the substrate and generating heat by energization, and disposed in the adhesion region on the second surface; An electrically insulating adhesive member that bonds the heat transfer plate and the heater, and the substrate and the adhesive member have a long shape extending from the distal end to the proximal end in the adhesive region. The width dimension in the bonding region is smaller than that of the bonding member, and the heat transfer plate is at a predetermined angle with respect to the second surface in the width direction of the bonding member. The end part and the end part in the width direction of the substrate contact each other. Further comprising an abutting surface that.

The treatment tool manufacturing method according to the present invention includes a heat transfer plate having a first surface and a second surface that is opposite to the first surface, an electrically insulating substrate, and the substrate. And a heater having an electric resistance pattern formed on the inner side in the width direction of the substrate and generating heat when energized, and disposed in an adhesion region on the second surface, and bonds the heat transfer plate and the heater. An electrical insulating adhesive member, comprising: a step of placing the uncured adhesive member on the adhesive region; and an end portion in the width direction of the adhesive member. A step of abutting against an abutment surface provided on the surface of 2; a step of placing the heater on the adhesive member; and a step of abutting an end in the width direction of the substrate with the abutment surface; , By pressing the heater toward the second surface While compressing the serial adhesive member, and a step of curing the adhesive member by applying heat.

According to the treatment tool and the method for manufacturing the treatment tool according to the present invention, the electric resistance pattern can be positioned with respect to the heat transfer plate while ensuring the withstand voltage performance.

FIG. 1 is a diagram showing a treatment system according to the first embodiment. FIG. 2 is a diagram illustrating the gripping portion. FIG. 3 is a diagram illustrating a treatment unit. 4 is a cross-sectional view taken along the line IV-IV shown in FIG. FIG. 5 is a flowchart showing a method for manufacturing a treatment instrument. FIG. 6A is a diagram illustrating a method for manufacturing a treatment tool. FIG. 6B is a diagram illustrating a method for manufacturing a treatment tool. FIG. 6C is a diagram illustrating a method for manufacturing a treatment tool. FIG. 6D is a diagram illustrating a method for manufacturing a treatment tool. FIG. 7 is a diagram illustrating a treatment unit according to the second embodiment. 8A is a cross-sectional view taken along the line AA shown in FIG. 8B is a cross-sectional view taken along line BB shown in FIG. FIG. 9 is a diagram illustrating a first modification of the second embodiment.

DETAILED DESCRIPTION Hereinafter, modes for carrying out the present invention (hereinafter referred to as embodiments) will be described with reference to the drawings. The present invention is not limited to the embodiments described below. Furthermore, the same code | symbol is attached | subjected to the same part in description of drawing.

(Embodiment 1)
[Schematic configuration of treatment system]
FIG. 1 is a diagram showing a treatment system 1 according to the first embodiment.
The treatment system 1 treats the target portion by applying thermal energy to a portion to be treated in the living tissue (hereinafter referred to as a target portion). Here, the said treatment means joining and incision of an object part, for example. As illustrated in FIG. 1, the treatment system 1 includes a treatment tool 2, a control device 3, and a foot switch 4.

[Configuration of treatment tool]
The treatment tool 2 is, for example, a surgical treatment tool for treating a target site while passing through the abdominal wall. As shown in FIG. 1, the treatment tool 2 includes a handle 5, a shaft 6, and a grip portion 7.
The handle 5 is a part that the surgeon holds by hand. The handle 5 is provided with an operation knob 51 as shown in FIG.
The shaft 6 has a substantially cylindrical shape, and one end is connected to the handle 5 (FIG. 1). In addition, a grip portion 7 is attached to the other end of the shaft 6. An opening / closing mechanism (illustrated) is provided inside the shaft 6 for opening and closing the first and second gripping members 8 and 9 (FIG. 1) constituting the gripping portion 7 in accordance with the operation of the operation knob 51 by the operator. Abbreviation) is provided. In addition, an electric cable C (FIG. 1) connected to the control device 3 is disposed inside the shaft 6 from one end side to the other end side via the handle 5.

(Configuration of gripping part)
The “tip side” described below means the tip side of the gripping part 7 and means the left side in FIG. Further, the “base end side” described below means the right side in FIG. 1 on the shaft 6 side of the grip portion 7.
FIG. 2 is a diagram illustrating the gripping unit 7.
The gripping part 7 is a part that treats the target part while holding the target part. As shown in FIG. 1 or FIG. 2, the grip portion 7 includes first and

second grip members

8 and 9.
The first and second grasping

members

8 and 9 are configured to be openable and closable in the direction of the arrow R1 (FIG. 2) according to the operation of the operation knob 51 by the operator.

[Configuration of first gripping member]
The first gripping member 8 is disposed at a position facing the second gripping member 9. As shown in FIG. 2, the first gripping member 8 includes a jaw 10, a support member 11, and a treatment unit 12.
The jaw 10 is a portion in which a part of the shaft 6 extends to the distal end side, and is formed in a long shape extending in the longitudinal direction from the distal end of the grip portion 7 toward the proximal end.
Here, the surface 101 on the second gripping member 9 side of the jaw 10 is such that the first and second

gripping members

8, 9 are gripped by the first and second

gripping members

8, 9. It is comprised by the flat surface orthogonal to the direction A1 (FIG. 2) which mutually opposes. The jaw 10 supports the support member 11 and the treatment portion 12 by the surface 101.
Examples of the material constituting the jaw 10 described above include metal materials such as stainless steel and titanium.

The support member 11 is a long flat plate extending in the longitudinal direction of the grip portion 7 and is fixed on the surface 101. Here, the support member 11 has substantially the same outer shape as the surface 101 when viewed from the second gripping member 9 side along the direction A1.
On the surface of the support member 11 on the second gripping member 9 side, as shown in FIG. 2, a notch extending from the base end to the tip end side along the longitudinal direction of the support member 11 is provided at the center in the width direction. A portion 111 is formed.
Examples of the material constituting the support member 11 described above include a material having a lower thermal conductivity than the heat transfer plate 13 and the jaw 10 constituting the treatment portion 12, for example, a resin material such as PEEK (polyether ether ketone). can do.

FIG. 3 is a diagram showing the treatment unit 12. Specifically, FIG. 3 is a view of the treatment portion 12 as viewed from the jaw 10 side. 4 is a cross-sectional view taken along the line IV-IV shown in FIG.
The treatment unit 12 generates heat energy under the control of the control device 3. And the treatment part 12 is provided with the heat exchanger plate 13, the adhesive member 14, and the heater 15, as shown in FIG. 3 or FIG.
The heat transfer plate 13 extends in the longitudinal direction of the grip portion 7. Here, the longitudinal dimension of the heat transfer plate 13 is set to be smaller than the longitudinal dimension of the notch 111. Further, the width dimension of the heat transfer plate 13 is set slightly smaller than the width dimension of the notch 111. The heat transfer plate 13 is fixed in a state of being fitted in the notch 111.

In the heat transfer plate 13, the surface on the second gripping member 9 side is in contact with the target site while the target site is gripped by the first and second

gripping members

8 and 9. That is, the said surface functions as the 1st surface 131 (FIG. 2, FIG. 4) based on this invention which transfers the heat from the heater 15 to the said object site | part. Note that “applying heat energy to the target part” means that heat from the heater 15 is transmitted to the target part. In the first embodiment, as shown in FIG. 2 or FIG. 4, the first surface 131 has a central portion in the width direction (left and right direction in FIG. 4) from the inside of the notch 111 to the second gripping member 9 side. Has a protruding cross-sectional shape.
Further, in the heat transfer plate 13, as shown in FIG. 3 or FIG. 4, a depression is formed in the center in the width direction of the second surface 132 that forms the front and back surfaces of the first surface 131. A recess 133 extending from the proximal end to the distal end side along the longitudinal direction of the heat transfer plate 13 is provided. The recess 133 has a rectangular shape as shown in FIG. 3 when viewed from the jaw 10 side along the direction A1. The bottom portion of the recess 133 corresponds to the adhesion region Ar according to the present invention. 3 and 4 forming the recess 133, the right side surface 133a is a surface orthogonal to the width direction of the heat transfer plate 13, and corresponds to the abutting surface and the first abutting surface according to the present invention. To do. Furthermore, the side surface 133b (FIG. 3) on the front end side constituting the recess 133 is a surface orthogonal to the longitudinal direction of the heat transfer plate 13, and corresponds to the abutting surface and the second abutting surface according to the present invention. Hereinafter, for convenience of description, the

side surfaces

133a and 133b are referred to as first and

second contact surfaces

133a and 133b, respectively.
Examples of the material constituting the heat transfer plate 13 described above include high thermal conductivity copper, silver, aluminum, molybdenum, tungsten, graphite, or a composite material thereof.

The adhesive member 14 is a rectangular sheet extending in the longitudinal direction of the grip portion 7. The adhesive member 14 is provided between the adhesive region Ar and the heater 15, and adheres and fixes the adhesive region Ar and the heater 15.
Here, the length dimension in the longitudinal direction of the adhesive member 14 is set to be substantially the same as the length dimension in the longitudinal direction of the adhesion region Ar. The width dimension of the adhesive member 14 (the length dimension in the left-right direction in FIGS. 3 and 4) is set smaller than the width dimension of the adhesion region Ar (the length dimension in the left-right direction in FIGS. 3 and 4). Has been.
The adhesive member 14 described above has a high thermal conductivity, is resistant to high temperatures, and has an adhesive property, for example, an epoxy resin mixed with a ceramic having a high thermal conductivity such as alumina or aluminum nitride. Is formed.

The heater 15 is a seat heater that generates heat when energized. As shown in FIG. 3 or 4, the heater 15 includes a substrate 16 and an electric resistance pattern 17.
The substrate 16 is a sheet-like substrate made of an electrically insulating material such as polyimide. As shown in FIG. 3, the substrate 16 includes a narrow portion 161 located on the distal end side (upper side in FIG. 3) and a wide portion 162 located on the proximal end side (lower side in FIG. 3). Prepare.
The narrow portion 161 is formed in a rectangular shape extending along the longitudinal direction of the grip portion 7. Here, the length dimension in the longitudinal direction of the narrow portion 161 is set to be longer than the length dimension in the longitudinal direction of the adhesion region Ar. Further, the width dimension of the narrow portion 161 (length dimension in the left-right direction in FIGS. 3 and 4) is smaller than the width dimension of the adhesive member 14 (length dimension in the left-right direction in FIGS. 3 and 4). Is set.
The wide portion 162 is provided at the base end of the narrow portion 161, and is formed in a substantially rectangular shape having a width dimension (length dimension in the left-right direction in FIG. 3) larger than the width dimension of the adhesion region Ar. Further, the center line L1 (FIG. 3) extending in the longitudinal direction through the center position in the width direction in the wide portion 162 is changed to the center line L2 (FIG. 3) extending in the longitudinal direction through the center position in the width direction in the narrow portion 161. On the other hand, it is offset to the left in FIG. That is, the substrate 16 has a substantially L shape as shown in FIG. 3 when viewed from the jaw 10 side along the direction A1.

The electrical resistance pattern 17 is obtained by processing a platinum thin film, and includes a pair of lead wire connecting portions 171 and a resistance pattern 172 as shown in FIG. The electric resistance pattern 17 is formed by patterning a platinum thin film formed by vapor deposition or sputtering on the plate surface 160 (FIG. 4) on the heat transfer plate 13 side of the substrate 16 by photolithography. Here, the electrical resistance pattern 17 has a symmetrical shape on the plate surface 160 with respect to the center line L1. The electrical resistance pattern 17 is formed on the plate surface 160 of the substrate 16 and on the inner side in the width direction (left-right direction in FIG. 3) of the substrate 16.
The material of the electrical resistance pattern 17 is not limited to a platinum thin film, and a conductive thin film material such as nickel or titanium may be employed. Further, the electrical resistance pattern 17 is not limited to a configuration in which a thin film is patterned on the plate surface 160, and a configuration in which a thick film paste material such as ruthenium oxide is formed on the plate surface 160 by a printing technique may be adopted. Absent.

As shown in FIG. 3, the pair of lead wire connecting portions 171 is provided in the wide portion 162 in a state of being parallel to the width direction (left-right direction in FIG. 3). A pair of lead wires (not shown) constituting the electric cable C are electrically connected to the pair of lead wire connection portions 171, respectively.
The resistance pattern 172 has a U-shape extending from the proximal end side to the distal end side and folded back at the distal end side and extending to the proximal end side on the plate surface 160, and both ends have a pair of lead wire connecting portions. 171 is connected to each. A voltage is applied to the resistance pattern 172 through the pair of lead wires and the pair of lead wire connecting portions 171 constituting the electric cable C under the control of the control device 3. Thereby, the resistance pattern 172 generates heat.

In addition, the relationship of the length dimension of the longitudinal direction of the adhesive member 14, the board | substrate 16, and the electrical resistance pattern 17 in the adhesion | attachment area | region Ar is as follows.
The length dimension D1 in the longitudinal direction of the adhesive member 14 in the adhesion area Ar and the length dimension D2 in the longitudinal direction of the substrate 16 in the adhesion area Ar are, as shown in FIG. 3, the length in the longitudinal direction of the adhesion area Ar. Each is the same as the dimension D0. In addition, the length dimension D3 in the longitudinal direction of the electrical resistance pattern 17 in the adhesion region Ar is smaller than the length dimension D0 (D1, D2). That is, the relationship is D0 = D1 = D2> D3.
Further, the relationship among the width dimensions of the adhesive member 14, the substrate 16, and the electrical resistance pattern 17 in the adhesive region Ar is as follows.
As shown in FIG. 4, the width dimension W1 of the bonding member 14 in the bonding area Ar is smaller than the width dimension W0 of the bonding area Ar. Further, the width dimension W2 of the substrate 16 in the adhesion region Ar is smaller than the width dimension W1. Furthermore, the width dimension W3 of the electrical resistance pattern 17 in the adhesion region Ar is smaller than the width dimension W2. That is, the relationship is W0>W1>W2> W3.

[Configuration of Second Holding Member]
The second grip member 9 has a long shape extending in the longitudinal direction of the grip portion 7. The second gripping member 9 is pivotally supported at the base end side so as to be rotatable with respect to the shaft 6 about the fulcrum P0 (FIG. 2), and opens and closes with respect to the first gripping member 8. To do.
In the first embodiment, the first gripping member 8 (jaw 10) is fixed to the shaft 6 and the second gripping member 9 is pivotally supported by the shaft 6. However, the present invention is not limited to this. For example, a configuration may be adopted in which both the first and second

gripping members

8 and 9 are pivotally supported by the shaft 6 and the first and second

gripping members

8 and 9 are opened and closed by rotating. Absent. In addition, for example, the first gripping member 8 is pivotally supported by the shaft 6, the second gripping member 9 is fixed to the shaft 6, and the first gripping member 8 is rotated to rotate the second gripping member 9. Alternatively, a configuration that opens and closes may be adopted.

(Manufacturing method of treatment tool)
FIG. 5 is a flowchart showing a method for manufacturing the treatment instrument 2. 6A to 6D are views for explaining a method for manufacturing the treatment instrument 2. Specifically, FIGS. 6A to 6D correspond to FIG.
Next, a method for manufacturing the treatment instrument 2 described above will be described with reference to FIGS. 5 and 6A to 6D. In the following, for convenience of explanation, a method for manufacturing the treatment section 12 will be mainly described.
First, as shown in FIG. 6A, the operator places the uncured adhesive member 14 on the adhesive region Ar (step S1).
After step S1, as shown in FIG. 6B, the operator moves the adhesive member 14 on the adhesive region Ar, and sets the end portion on the distal end side of the adhesive member 14 and the end portion in the width direction to the first and second ends. The second abutting

surfaces

133a and 133b are brought into contact with each other (step S2). That is, the operator abuts the corner portion formed by the end portion on the front end side of the adhesive member 14 and the end portion in the width direction to the corner portion formed by the first and second abutting

surfaces

133a and 133b. Let Thereby, the adhesion member 14 is positioned in the adhesion area Ar.

After step S2, as shown in FIG. 6C, the operator places the narrow portion 161 of the heater 15 on the adhesive member 14 with the electrical resistance pattern 17 facing the adhesive member 14 (step S3). .
After step S3, as shown in FIG. 6D, the operator moves the heater 15 on the adhesive member 14, and the first and first ends in the width direction of the narrow portion 161 and the end portion on the front end side are moved. The two

contact surfaces

133a and 133b are brought into contact with each other (step S4). That is, the worker hits the corner portion formed by the end portion on the front end side of the narrow portion 161 and the end portion in the width direction to the corner portion formed by the first and

second contact surfaces

133a and 133b. Make contact. Thereby, the heater 15 is positioned in the adhesion region Ar. That is, the center line L1 extending in the longitudinal direction through the center position in the width direction in the electrical resistance pattern 17 is the center line L0 extending in the longitudinal direction through the center position in the width direction in the heat transfer plate 13 and the bonding region Ar (FIG. 6D). It matches.

After step S4, the operator presses the heater 15 toward the bonding region Ar to compress the uncured adhesive member 14, and puts the treatment portion 12 in the state into a curing furnace to generate heat. The hot press process to add is implemented (process S5). Thereby, the uncured adhesive member 14 is cured, and the adhesive region Ar and the heater 15 are bonded and fixed by the adhesive member 14.

[Configuration of control device and foot switch]
The foot switch 4 is a part operated by a surgeon with a foot. And according to the said operation to the foot switch 4, on / off of the electricity supply from the control apparatus 3 to the treatment tool 2 (heater 15) is switched.
Note that the means for switching on and off is not limited to the foot switch 4, and a switch operated by hand or the like may be employed.
The control device 3 includes a CPU (Central Processing Unit) and the like, and comprehensively controls the operation of the treatment instrument 2 according to a predetermined control program.

[Action system action]
Next, operation | movement of the treatment system 1 mentioned above is demonstrated.
The surgeon holds the treatment tool 2 by hand, and inserts the distal end portion of the treatment tool 2 (a part of the gripping portion 7 and the shaft 6) through the abdominal wall using, for example, a trocar or the like and into the abdominal cavity. Then, the surgeon grips the target site by the grip portion 7 by operating the operation knob 51.
Next, the surgeon operates the foot switch 4 to switch on the energization from the control device 3 to the treatment instrument 2. When switched on, the control device 3 applies a voltage to the resistance pattern 172 through the pair of lead wires and the pair of lead wire connecting portions 171 constituting the electric cable C. Thereby, the heat exchanger plate 13 is heated. In addition, the target portion that is in contact with the heat transfer plate 13 is treated by being heated to the target temperature.

According to the first embodiment described above, the following effects are obtained.
In the treatment portion 12 according to the first embodiment, the heat transfer plate 13 includes an end portion on the distal end side of the adhesive member 14, an end portion in the width direction, an end portion on the distal end side of the narrow portion 161, and a width. First and second abutting

surfaces

133a and 133b with which the end portions in the direction abut each other are provided. For this reason, the positioning of the adhesive member 14 and the heater 15 (steps S2 and S4) is carried out without relying on visual observation only by bringing the adhesive member 14 and the heater 15 into contact with the first and

second contact surfaces

133a and 133b. can do. That is, the center line L1 extending in the longitudinal direction passing through the center position in the width direction in the electric resistance pattern 17 is easy with respect to the center line L0 passing through the center position in the width direction in the heat transfer plate 13 and the bonding region Ar. Can be matched. For this reason, the heat distribution of the heat transfer plate 13 can be made uniform.
Further, the width dimension in the adhesion region Ar becomes smaller in the order of the adhesive member 14 (width dimension W1), the substrate 16 (width dimension W2), and the electric resistance pattern 17 (width dimension W3). Further, the length dimension in the longitudinal direction in the adhesive region Ar is the same for the adhesive member 14 (length dimension D1) and the substrate 16 (length dimension D2), and the electric resistance pattern 17 (length dimension D3) is the adhesive member. 14 and the substrate 16 are smaller. For this reason, the electrical resistance pattern 17 can be sufficiently covered by the adhesive member 14 in a state where the adhesive member 14 and the heater 15 are positioned (steps S <b> 2 and S <b> 4). That is, the withstand voltage performance of the heat transfer plate 13 and the electric resistance pattern 17 can be ensured.

In particular, the adhesive member 14 and the heater 15 are positioned by the same first and second abutting

surfaces

133a and 133b.
Therefore, when the heater 15 is positioned (step S4), even if the heater 15 is moved on the adhesive member 14, the movement of the adhesive member 14 in the moving direction of the heater 15 is the first and first movements. The two abutting

surfaces

133a and 133b are regulated. That is, the adhesive member 14 does not move with the movement of the heater 15. Therefore, the electrical resistance pattern 17 can be sufficiently covered by the adhesive member 14 in a state where the positional deviation of the adhesive member 14 is avoided and the heater 15 is positioned (step S4). That is, the withstand voltage performance of the heat transfer plate 13 and the electric resistance pattern 17 can be ensured.

The first and second abutting

surfaces

133 a and 133 b are side surfaces that form the recess 133 provided in the second surface 132.
For this reason, it is possible to provide the first and second abutting

surfaces

133a and 133b at a low cost while maintaining the strength of the heat transfer plate 13 sufficiently.

(Embodiment 2)
Next, the second embodiment will be described.
In the following description, the same reference numerals are given to the same components as those in the first embodiment described above, and detailed description thereof will be omitted or simplified.
FIG. 7 is a diagram illustrating the treatment unit 12A according to the second embodiment. Specifically, FIG. 7 corresponds to FIG. 8A is a cross-sectional view taken along line AA shown in FIG. 8B is a cross-sectional view taken along the line BB shown in FIG.
In the treatment section 12A (heater 15A) according to the second embodiment, as shown in FIG. 7, FIG. 8A or FIG. 8B, the substrate is different from the treatment section 12 (heater 15) described in the first embodiment. The board | substrate 16A which changed the shape of the narrow part 161 in 16 is employ | adopted.

The narrow portion 161A constituting the substrate 16A is closer to the base end side than the narrow portion 161 described in the first embodiment above the center position CP in the longitudinal direction of the narrow portion 161 in the adhesion region Ar. Only the region Ar2 is left, and the width of the other region Ar1 is reduced. That is, the width dimension W4 (FIG. 8A) of the area Ar1 is larger than the width dimension W3 (FIGS. 8A and 8B) of the electric resistance pattern 17 in the adhesion area Ar, and is larger than the width dimension W2 (FIG. 8B) of the area Ar2. small. The regions Ar1 and Ar2 correspond to the first and second regions according to the present invention. Hereinafter, for convenience of explanation, the regions Ar1 and Ar2 are referred to as first and second regions Ar1 and Ar2, respectively. And in 2nd area | region Ar2, the part protruded in the width direction outer side from the edge part in the width direction of 1st area | region Ar1 is equivalent to the overhang | projection part 163 (FIG. 7, FIG. 8B) which concerns on this invention.

In addition, the manufacturing method of treatment part 12A differs only in process S4 with the manufacturing method (FIG. 5) of the treatment part 12 demonstrated in Embodiment 1 mentioned above.
Specifically, in step S4, the operator moves the heater 15A on the adhesive member 14, and sets the end portion in the width direction of the overhang portion 163 and the end portion on the front end side of the narrow portion 161A to the first and second ends. The

second contact surfaces

133a and 133b are brought into contact with each other. Thereby, the heater 15A is positioned in the adhesion region Ar. That is, the center line L1 extending in the longitudinal direction through the center position in the width direction in the electric resistance pattern 17 extends in the longitudinal direction through the center position in the width direction in the heat transfer plate 13 and the bonding region Ar as shown in FIG. Matches the center line L0.

According to the second embodiment described above, the following effects are obtained in addition to the same effects as those of the first embodiment.
The substrate 16A constituting the treatment section 12A according to the second embodiment is formed with a smaller planar size than the substrate 16 described in the first embodiment.
Therefore, the heat capacity of the substrate 16A can be reduced, and the amount of heat taken by the substrate 16A from the resistance pattern 172 can be reduced. That is, the heat of the resistance pattern 172 can be effectively transferred to the heat transfer plate 13. Therefore, a large amount of heat energy can be input to the target part.

By the way, each part (end part in the front end side of the narrow part 161A, end part in the width direction of the overhang part 163) where the heater 15A abuts against the first and

second contact surfaces

133a and 133b is a central position. In the case where they are positioned on the tip side from the CP, the following problems may occur.
That is, when the positioning of the heater 15A (step S4) is performed, the heater 15A may rotate on the adhesive member 14. That is, it is difficult to position the heater 15A at a desired position.
In the second embodiment, the second region Ar2 is provided on the base end side with respect to the center position CP in the longitudinal direction of the narrow portion 161 in the adhesion region Ar.
For this reason, when the heater 15A is positioned (step S4), the heater 15A can be prevented from rotating on the adhesive member 14. That is, the heater 15A can be easily positioned at a desired position.

(Modification 1 of Embodiment 2)
FIG. 9 is a diagram illustrating a first modification of the second embodiment. Specifically, FIG. 9 corresponds to FIG.
In the step S4 according to the second embodiment described above, when positioning the heater 15A, as shown in FIG. 9, the end portion in the width direction of the overhang portion 163 may be brought into contact with the first abutting surface 133a. For example, the end portion on the front end side of the narrow portion 161A may not be in contact with the second abutting surface 133b.
In this case, the relationship between the longitudinal lengths of the adhesive member 14, the substrate 16 </ b> A, and the electrical resistance pattern 17 in the adhesive region Ar is as follows.
The length dimension D1 in the longitudinal direction of the adhesive member 14 in the adhesion region Ar is the same as the length dimension D0 in the longitudinal direction of the adhesion region Ar. Further, the length dimension D2 ′ in the longitudinal direction of the substrate 16A in the adhesion region Ar is smaller than the length dimension D0 (D1). Further, the length dimension D3 ′ in the longitudinal direction of the electric resistance pattern 17 in the adhesion region Ar is smaller than the length dimension D2 ′. That is, the relationship is D0 = D1> D2 ′> D3 ′.
In the first embodiment described above, as in the first modification, when the positioning of the heater 15 (step S4) is performed, the end of the narrow portion 161 in the width direction is the first abutting surface. If it is in contact with 133a, the end of the narrow portion 161 on the tip side may not be in contact with the second abutting surface 133b.

(Other embodiments)
The embodiments for carrying out the present invention have been described so far, but the present invention should not be limited only by the above-described first and second embodiments and the first modification.
In

Embodiments

1 and 2 and Modification 1 described above, the first and second abutting

surfaces

133a and 133b are side surfaces that form the recesses 133, but the present invention is not limited thereto. For example, instead of the concave portion 133, a convex portion protruding from the second surface 132 is formed. And let the side surface of the said convex part be the abutment surface which concerns on this invention. Note that the number of the convex portions is not limited to one, and a plurality of convex portions may be provided.

In the first and second embodiments and the first modification described above, only the first gripping member 8 is provided with the heat transfer plate, the heater, and the adhesive member according to the present invention, but this is not a limitation. The first and second

gripping members

8 and 9 may be provided with the heat transfer plate, the heater, and the adhesive member according to the present invention.
In the first and second embodiments and the first modification described above, the first surface 131 is configured by a convex shape, but is not limited thereto, and may be configured by a flat surface, or may be a concave shape or the like. You may comprise by the shape of. The same applies to the second gripping member 9 side.

In the first and second embodiments and the first modification described above, the configuration in which the thermal energy is applied to the target portion is employed. However, the configuration is not limited thereto, and the high frequency energy and the ultrasonic energy are applied in addition to the thermal energy. You may employ | adopt the structure to do. Note that “applying high-frequency energy to the target part” means flowing a high-frequency current to the target part. Further, “applying ultrasonic energy to the target part” means applying ultrasonic vibration to the target part.

DESCRIPTION OF SYMBOLS 1 Treatment system 2 Treatment tool 3 Control apparatus 4 Foot switch 5 Handle 6 Shaft 7 Gripping part 8 1st holding member 9 2nd holding member 10 Jaw 11

Support member

12, 12A Treatment part 13 Heat exchanger plate 14

Adhesive member

15,

15A Heater

16, 16A Substrate 17 Electrical resistance pattern 51 Operation knob 101 Surface 111 Notch 131 First surface 132 Second surface 133 Recess 133a First abutting surface 133b Second abutting surface 160

Plate surface

161, 161A Narrow part 162 Wide part 163 Overhang part 171 Lead wire connection part 172 Resistance pattern A1 direction Ar adhesion area Ar1 first area Ar2 second area C electric cable CP center position D0 to D3, D2 ′, D3 ′ Longitudinal direction Length dimension L0 to L2 center line P0 fulcrum R1 arrow W0 to W3 width dimension

Claims

A heat transfer plate having a first surface and a second surface that is opposite to the first surface;
A heater having an electrically insulating substrate and an electric resistance pattern formed on the substrate and on the inner side in the width direction of the substrate and generating heat by energization;
An electrically insulating adhesive member that is disposed in an adhesive region on the second surface and bonds the heat transfer plate and the heater;
The substrate and the adhesive member are
Each has an elongated shape extending from the distal end to the proximal end in the adhesive region,
The width dimension in the adhesive region is
The substrate is smaller than the adhesive member,
The heat transfer plate is
A treatment instrument further comprising an abutting surface which forms a predetermined angle with respect to the second surface and abuts the end portion in the width direction of the adhesive member and the end portion in the width direction of the substrate.
The substrate is
A first region having a first width dimension;
A second region having a second width dimension larger than the first width dimension and provided with a projecting portion projecting outward in the width direction from an end portion in the width direction of the first region; With
On the abutment surface,
The treatment tool according to claim 1, wherein end portions in the width direction of the overhanging portions abut.
The abutting surface is
A first abutting surface on which an end portion in the width direction of the adhesive member and an end portion in the width direction of the substrate abut each other;
The treatment tool according to claim 1, further comprising: an end portion in the longitudinal direction of the adhesive member and a second abutting surface with which the end portion in the longitudinal direction of the substrate abuts.
In the second surface,
A recess that is recessed toward the first surface and extends from the proximal end to the distal end side of the heat transfer plate is provided,
The first abutment surface and the second abutment surface are
The treatment tool according to claim 3, which is a side surface forming the concave portion.
The substrate is
A first region having a first width dimension;
A second region having a second width dimension larger than the first width dimension and provided with a projecting portion projecting outward in the width direction from an end portion in the width direction of the first region; With
On the first abutting surface,
The treatment tool according to claim 3, wherein end portions of the overhang portions in the width direction come into contact with each other.
The tip of the substrate is
Abuts against the second abutment surface;
The second region is
The treatment tool according to claim 5, wherein the treatment tool is provided on a proximal end side with respect to a center position in a longitudinal direction of the substrate in the adhesion region.
The length dimension in the longitudinal direction of the substrate in the adhesion region is:
It is below the length dimension in the longitudinal direction of the adhesive member in the adhesive region,
The length dimension in the longitudinal direction of the electrical resistance pattern in the adhesive region is
The treatment tool according to claim 1, wherein the treatment tool is smaller than a longitudinal dimension of the substrate in the adhesion region.
A heat transfer plate having a first surface and a second surface that is opposite to the first surface, an electrically insulating substrate, and formed on the substrate and on the inner side in the width direction of the substrate And a heater having an electrical resistance pattern that generates heat when energized, and an electrically insulating adhesive member that is disposed in an adhesive region on the second surface and bonds the heat transfer plate and the heater. A method of manufacturing a treatment instrument,
Placing the uncured adhesive member on the adhesive region;
A step of bringing an end portion in the width direction of the adhesive member into contact with an abutting surface provided on the second surface;
Placing the heater on the adhesive member;
Contacting the abutting surface with an end in the width direction of the substrate;
And a step of compressing the adhesive member by pressing the heater toward the second surface and curing the adhesive member by applying heat.