JP2002238916A - Exothermic treatment apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To realize an exothermic treatment apparatus by which temperature distributions appropriate to treatment parts with various shapes are formed and stable treatments can be performed. SOLUTION: The exothermic treatment apparatus 1 is constituted of coagulation dissection forceps 2 in which a plurality of exothermic elements 21 are built and an apparatus main body 3 which energizes electric power to the exothermic elements 21 of these coagulation dissection forceps 2 and controls driving of them. The apparatus main body 3 can be connected with the coagulation dissection forceps with the maximum four exothermic elements 21 and has an element temperature measurement/output controlling part 32 and a temperature setting part 33 for four channels corresponding to each of them. The element temperature measurement/output controlling part 32 and the temperature setting part 33 are controlled by a control part 34. The control part 34 judges the kind of the forceps connected based on data stored in advance in a memory 35 by the information on the kind of the forceps received from the coagulation dissection forceps 22 and controls output of the electric power on each exothermic element 21.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fever treatment apparatus, and more particularly, to a fever treatment apparatus for applying heat to an affected part to perform treatment.

[0002]

2. Description of the Related Art In general, an exothermic treatment apparatus is used when performing treatment such as incision, coagulation, and hemostasis of an affected part in a surgical operation or a medical operation. The heat treatment apparatus has a treatment unit having a built-in heat generating means for heating the affected part, and applies heat generated by the heat generating means of the treatment part to the affected part to perform treatments such as incision, coagulation, and hemostasis. I have.

As described above, for example, Japanese Patent Publication No. 53-9031 discloses a heat treatment apparatus having a treatment section having a plurality of divided heater segments as heat generating means. . The treatment unit is
The heat generated in the plurality of heater segments set at the same temperature setting is applied to the affected part to treat the affected part.

[0004]

However, the heat treatment apparatus described in Japanese Patent Publication No. 53-9031 causes the plurality of heater segments to generate heat at the same temperature setting. There is a possibility that a difference occurs in the temperature distribution of the treatment section.

[0005] The present invention has been made in view of these circumstances, and an exothermic treatment apparatus capable of forming a suitable temperature distribution and performing stable treatment for treatment sections of various shapes. The purpose is to provide.

[0006]

According to a first aspect of the present invention, there is provided a heat treatment apparatus having a heat generating means for generating heat for treating an affected part; A heat generation setting means for setting heat generation information for each of a plurality of different heat generation parts provided in the heat generation means; and a plurality of different heat generation parts of the heat generation means based on the plurality of heat generation information set by the heat generation setting means. And temperature control means for controlling the temperature. In addition, the heat treatment apparatus according to claim 2 of the present invention has a treatment section having a heat generating means for generating heat for treating an affected part, and a heat generating means for each of a plurality of different heat generating portions provided in the heat generating means. Detection means for detecting a state, heat generation setting means for setting heat generation information for each of a plurality of different heat generation portions provided in the heat generation means, and a heat generation state of the heat generation means detected by the detection means and the heat generation setting means. Temperature control means for independently controlling a plurality of different heat generating portions of the heat generating means based on the plurality of heat information set. According to a third aspect of the present invention, in the heat generation treatment apparatus according to the first or second aspect, the heat generation setting means sets the plurality of pieces of heat information according to the treatment unit. With this configuration, it is possible to realize a heat treatment apparatus capable of forming an appropriate temperature distribution and performing a stable treatment for treatment sections having various shapes.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. (First Embodiment) FIGS. 1 to 8 relate to a first embodiment of the present invention, and FIG. 1 is an apparatus configuration diagram showing an entire configuration of a heat treatment apparatus according to the first embodiment of the present invention. FIG. 2 shows FIG.
It is an external view of an apparatus main body used in the heat treatment apparatus,
2A is an external perspective view of the apparatus main body viewed from the front panel side, FIG. 2B is an external view showing the rear panel of FIG. 2A, and FIG. 3 is used in the heat treatment apparatus of FIG. FIG. 4 is a schematic explanatory view showing a heat treatment part of the coagulation incision forceps shown in FIG. 3, and FIG. 4 (a) is a schematic perspective view of the heat treatment part viewed from a side horizontal direction. 4 (b) is a schematic perspective view of the heat treatment unit of FIG.
FIG. 5 is a schematic explanatory view showing a modified example of the coagulation / incision forceps of FIG. 4, in which FIG. 5 (a) is a schematic perspective view of the heat treatment section from the side in the horizontal direction, and FIG. 5 (b) is FIG. FIG. 6 is a schematic perspective view of the heat-treating portion from the top vertical direction, FIG. 6 is a schematic explanatory view showing another modified example of the coagulation / incision forceps of FIG. 4, and FIG. FIG. 6B is a schematic perspective view of FIG.
FIG. 7A is a schematic perspective view of the heat-treating unit shown in FIG. 7A as viewed from the upper surface vertical direction, FIG. 7 is a detailed explanatory view showing the treatment unit of the coagulation-incision forceps of FIG. 3, and FIG. FIG. 7B is a side cross-sectional view of the treatment portion of the coagulating incision forceps viewed from the horizontal side, and FIG. 8 is a view of a heat treatment apparatus according to the first embodiment of the present invention. FIG. 3 is a circuit block diagram for explaining.

As shown in FIG. 1, a heat treatment apparatus 1 according to the present embodiment includes a coagulating incision forceps 2 having a heat generating element described below.
And a device main body 3 that detachably connects the coagulation / cutting forceps 2 and outputs power to the heating element of the coagulation / cutting forceps 2 to control the driving. The device main body 3 is connectable with a foot switch 6. The foot switch 6
Has two switches, a maximum temperature level output switch 6a and a set temperature level output switch 6b, as input means.

The coagulation-incision forceps 2 is configured to detachably connect a main body connection connector 5 provided at a rear end of a connection cable 4 extending to the apparatus main body 3. The coagulation / incision forceps 2 has a heating treatment section 7 containing a plurality of heating elements, and an elastic receiving section 8 that can be brought into contact with and separated from the heating treatment section 7. A section 9 is provided.

The heat treatment section 7 and the elastic receiving section 8 of the treatment section 9 hold the living tissue, and when the heat treatment section 7 that generates heat by energization from the apparatus main body 3 generates heat, the grasped living tissue is coagulated. An incision is made. Further, the number of the heating elements differs depending on the type of the forceps according to the treatment purpose, and the main body connector 5 has a built-in forceps identifier 10 (see FIG. 8) indicating the type of the forceps. The forceps identifier 10 is, for example, an electric resistance element.

As shown in FIG. 2, the apparatus main body 3 has a front panel 3a and a back panel 3b. As shown in FIG. 2 (a), the front panel 3a includes a connector receiving portion 11 to which the main body connection connector 5 of the coagulation / cutting forceps 2 can be detachably connected. The front panel 3a includes a power switch 12 for turning on / off the power,
It has a temperature level UP switch 13a and a temperature level DOWN switch 13b for setting heat generation temperature levels 1 to 5 in the heat treatment section 7 of the coagulation / cutting forceps 2, and a standby switch 14 for shifting from a standby state to an output enabled state. are doing.

The front panel 3a includes a standby display LED 14b that lights up when output is disabled to display a standby state, and the temperature level UP switch 13a.
A temperature level display LED 15 for displaying a temperature level set by the temperature level DOWN switch 13b, an output display LED 16 for indicating that the heating element of the coagulation incision forceps 2 is being energized, and an abnormality in the coagulation incision forceps 2. LED 17a for indicating the forceps abnormality when turned on, and LED 17b for indicating the power supply abnormality when there is an abnormality in the internal circuit.
And a buzzer 17c for generating a warning sound.

On the other hand, as shown in FIG. 2B, the rear panel 3b includes a foot switch connector receiving portion 18 and a power supply inlet 19. The apparatus main body 3 of the present embodiment can be connected to the coagulation / incision forceps 2 having a maximum of four built-in heating elements.

As shown in FIG. 3, the coagulating incision forceps 2
As described above, the treatment unit 9 includes the treatment unit 9 having the heat treatment unit 7 and the elastic receiving unit 8, and includes the handle unit 20 that performs an opening / closing operation to grip the living tissue with the treatment unit 9.
The connection cable 4 extends from the rear end of the handle portion 20.

As shown in FIGS. 4A and 4B, the heating treatment section 7 of the coagulation / incision forceps 2 includes a plurality of heating elements 2.
1, for example, the same three heating elements 21a, 21b, 21
c is thermally coupled and provided on the heat transfer plate 22.

FIG. 5 and FIG. 6 show a modified example of the coagulated incision forceps 2. Heating treatment section 7 of coagulation / incision forceps 2b shown in FIG.
In b, the heating elements 21a, 21b, and 21c are arranged closer to the distal end than the heating treatment section 7 of the coagulated incision forceps 2 described in FIG. 2, and the width of the heat transfer plate 22b is reduced. I have. Heat-generating treatment section 7c of coagulation incision forceps 2c shown in FIG.
Has two heating elements 21a and 21b, and these heating elements 21a and 21b are arranged closer to the rear of the heat transfer plate 22c, which is narrower than the heat treatment section 7b of the coagulated incision forceps 2b shown in FIG. Has been established.

In this embodiment, by changing the set temperature of each heating element 21 in accordance with the shape of the forceps and the arrangement of the heating elements 21, the temperature unevenness of the heating treatment section 22 is reduced.

Next, the detailed structure of the treatment section 9 having the heat treatment section 7 and the elastic receiving section 8 will be described. The fever treatment section 7
The heating element 21 shown in FIGS. 7A and 7B
(21a to 21c) are built in the heat treatment unit main body 7a. Here, the heating element is, for example, a thin film resistor formed on a ceramic plate. These heating elements 21 (21
a to 21c) are coaxial lead wires 23 (2
3a, 23b, 23c) are connected to each other, and the other ends of these lead wires 23 are inserted through the connection cable 4 and connected to connector terminals (not shown) of the main body connection connector 5.

As described above, the heating element 21 (21a
To 21c) are thermally coupled to the heat transfer plate 22 so that the heat generated by the heating elements 21 (21a to 21c) is transmitted to the heat transfer plate 22.

On the other hand, the elastic receiving portion 8 has a saw blade portion 24a capable of gripping a living tissue with the heat transfer plate 22 of the heat treatment section 7.
Is provided on the elastic receiving portion main body 8a. When the handle portion 20 is closed, the elastic receiving portion 8 closes with respect to the heat treatment portion 7, so that the heat transfer plate 22 of the heat treatment portion 7 and the saw blade of the elastic receiving portion 8 are closed. The living tissue is elastically gripped with the portion 24a,
The living tissue sandwiched between the heat transfer plate 22 and the elastic member 24 is coagulated and incised by the heat of the heat transfer plate 22.

As shown in FIG. 8, when the main body connection connector 5 of the coagulated incision forceps 2 is connected to the apparatus main body 3, the type of forceps output from the forceps identifier 10 in the main body connection connector 5 is shown. The information is received by the forceps identification unit 31.

The forceps identification section 31 includes the forceps identifier 1
When 0 is an electric resistance element, the type of forceps is identified by measuring the resistance value. The type of the forceps means the number and arrangement of the built-in heating elements 21 and the heat transfer plate 2.
This is a difference in the structure obtained by combining the two shapes.

The apparatus main body 3 can be connected to a coagulated incision forceps having, for example, a maximum of four heating elements 21 (21a, 21b, 21c, 21d).
(21a, 21b, 21c, 21d) Element temperature measurement / output control unit 32 for four channels corresponding to each of
(32a to 32d) and the temperature setting unit 33 (33a to 33
d). These element temperature measurement / output control units 3
2 (32a to 32d) and the temperature setting unit 33 (33a to 3
3d) is controlled by the control unit 34. When the number of the heating elements 21 incorporated in the coagulation / cutting forceps 2 is three or less, the respective heating elements are sequentially allocated from the respective channels.

The element temperature measurement / output control unit 32 (32
a to 32d) calculate the element temperature from the respective resistance values of the heating elements 21 (21a to 21d),
The output to each of the heating elements 21 (21a to 21d) is controlled so as to be maintained at the temperature set in (33a to 33d).

The control unit 34 determines the type of the connected forceps based on the data stored in the memory 35 in advance in accordance with the information on the type of the forceps output from the forceps identification unit 31. It has become. Then, the control unit 34 controls the memory 3 according to the determined type of forceps.
5, the set temperature set by the temperature setting unit 33 (33a to 33d) is changed, and the element temperature measurement / output control unit 32 is changed.
The outputs (32a to 32d) are controlled. The setting data stored in the memory 35 in advance is set based on the number and arrangement of the heating elements 21, the shape of the heat transfer plate 22, and the like.

The control section 34 is operated by a temperature setting input by the operation section 36 and a maximum temperature level output or a set temperature level output by the foot switch 6 through the foot switch input section 37. The temperature setting section 33 (33a to 33d) is set. Here, the operation unit 36 is the front panel 3 described above.
The switches are various switches such as a temperature level UP switch 13a provided on the front panel 3a, and various display LEDs provided on the front panel 3a are a display section 38. When an abnormality in the circuit is detected, the control unit 34 turns on the forceps abnormality display LED 17a to sound the buzzer 17c.

The operation of the heat treatment apparatus 1 thus configured will be described with reference to FIGS. 4 to 6 and Tables 1 to 3. First, the case where the coagulation / incision forceps 2 having the heat treatment section 7 described in FIG. 4 is connected will be described.

The power switch 12 is turned on to start the entire heat treatment apparatus 1. When the coagulated incision forceps 2 is connected to the apparatus main body 3, the forceps identification unit 31 receives the information on the type of the forceps output from the forceps identifier 10, identifies the type of the coagulated incision forceps 2, and determines the type of the identified forceps. The type information is transmitted to the control unit 34.

The control unit 34 determines the type of the connected forceps based on the data stored in the memory 35 in accordance with the information on the type of the forceps output from the forceps identifying unit 31 and generates the heating treatment described in FIG. The type having the portion 7 is determined.

Then, the control section 34 reads out from the memory 35 the number information of the heating elements 21 and the set temperature table as the set data corresponding to the determined coagulated incision forceps 2. Here, the set temperature table is set temperature information of each heating element 21 corresponding to the set temperature level. The set temperature levels are set in five stages from level 1 to level 5 as shown in Table 1, for example.

[0031]

[Table 1] In the set temperature table shown in Table 1, the temperature of the heating element 21a is the highest, followed by the heating element 21c and the heating element 21c.
b is set to be the lowest.

In order to reduce the temperature unevenness at the tissue contacting surface of the heat transfer plate 22, the temperature of the heating element 21a to be heated widely to the front end side of the heat transfer plate 22 is made highest, and then the comparison is made. This is because it is suitable to lower the temperature of the heating element 21c that heats the target width and the heating element 21b that has the least load between the two heating elements 21a and 21c.

Here, when the standby switch 14 is pressed, the control unit 34 releases the standby state, turns off the standby display LED 14b to enable output, and depresses the foot switch 6 to cause the coagulation / cutting forceps 2 to move. Is supplied to the heating element 21. When the standby switch 14 is pressed again, the control unit 34 shifts to the standby state, turns on the standby display LED 14b, and releases the output enabled state.

When the maximum temperature level output switch 6a of the foot switch 6 is turned on, the control section 34 sets the temperature level 5 set value to the temperature setting section 33 corresponding to each heating element regardless of the set temperature level. (33a-33d). That is, the heating element 21a is set at 220 ° C., the heating element 21b is set at 200 ° C., and the heating element 21c is set at 210 ° C. Then, the control unit 34 sets the element temperature measurement / output control units 32a to 32c to the output state. At this time,
The control unit 34 turns on the output display LED 14 and makes the buzzer emit a continuous sound.

Element temperature measurement / output control units 32a to 32c
The heating elements 21a to 21c are respectively
The output is controlled while measuring the element temperature so that the temperature level 5 is set at a to 33c.

On the other hand, when the set temperature level output switch 6b of the foot switch 6 is turned on, the control section 34 sets the set value according to the set temperature level to the temperature setting sections 33 (33a to 33a) corresponding to each heating element. 33d), the element temperature measurement / output control units 32a to 32c are set to the output state, and output is started. At this time, the control unit 34 blinks the output display LED 14 and sounds the buzzer with an intermittent sound.

For example, when the temperature level is set to 3, the heating element 21a is 200 ° C. and the heating element 21b is 18 ° C.
The output is set at 0 ° C. and the heating element 21c is set at 190 ° C. As a result, the temperature unevenness on the tissue contacting surface of the heat transfer plate 22 can be reduced and made more uniform than when all the heating elements 21 (21a to 21c) are output at the same temperature.

Next, a case where the coagulation / incision forceps 2b having the heat treatment section 7b described in FIG. 5 is connected to the apparatus main body 3 will be described. When the coagulation-incision forceps 2b is connected to the apparatus main body 3 in the same manner as the coagulation-incision forceps 2 having the heat treatment section 7 described above, the forceps identification unit 31 performs identification based on information on the type of forceps output from the forceps identifier 10. The information of the type of the forceps thus transmitted is transmitted to the control unit 34.

The control unit 34 controls the coagulated incision forceps 2b having the heating treatment unit 7b described in FIG.
And the heating element 2 corresponding to the coagulating incision forceps 2b is determined.
The number information of 1 and the set temperature table are read from the memory 35.

[0040]

[Table 2] The set temperature table shown in Table 2 shows that the temperature of the heat generating element 21c that heats the wide portion of the heat transfer plate 22b is increased, and the temperatures of the remaining heat generating elements 21a and 21b are made the same. It is set so as to reduce temperature unevenness on the tissue contact surface.

Here, when the standby switch 14 is pressed, the control unit 34 releases the standby state, turns off the standby display LED 14b, and sets the output enable state. Then, when the maximum temperature level output switch 6a of the foot switch 6 is turned on, the control unit 34 sets the temperature level 5
Is instructed to the temperature setting unit 33 (33a to 33d), and the element temperature measurement / output control unit 32 (32a to 3d) is set.
2d) is set to the output state, and the heating elements 21a and 21b
The temperature is set to 10 ° C. and the heating element 21c is set to 220 ° C. for output.

On the other hand, when the set temperature level output switch 6b of the foot switch 6 is turned on, the control unit 34 instructs, for example, the temperature level 3 to the temperature setting units 33 (33a to 33d) and controls the element temperature measurement / output. Parts 32a to 32
c to the output state, and the heating elements 21a and 21b
° C and the heating element 21c are set at 200 ° C and output.

Next, a case in which the coagulation / incision forceps 2c having the heat treatment section 7c described in FIG. 6 is connected will be described. As described above, the heat treatment unit 7c includes two heat generating elements 21.
Individually, it is arranged behind the elongated heat transfer plate 22b.

The coagulated incision forceps 2c having the heat treatment section 7c is the same as the coagulated incision forceps 2 having the heat treatment section 7 described above.
When the coagulation / incision forceps 2c is connected to the apparatus main body 3 in the same manner as described above, the forceps identification unit 31 transmits information on the type of the identified forceps to the control unit 34 based on the information on the type of forceps output from the forceps identifier 10. I do.

The control unit 34 controls the coagulated incision forceps 2c having the heating treatment unit 7c described in FIG.
Thus, the number information of the heating elements 21 and the set temperature table corresponding to the coagulation / cutting forceps 2c are read from the memory 35.

[0046]

[Table 3] The set temperature table shown in Table 3 shows that the structure of the heat transfer plate 22 is obtained by increasing the temperature of the heating element 21a that heats the distal end of the long heat transfer plate 22b and decreasing the temperature of the heating element 21b. It is set so as to reduce temperature unevenness at the contact surface.

Here, when the standby switch 14 is pressed, the control section 34 releases the standby state, turns off the standby display LED 14b, and sets the output enable state. Then, when the maximum temperature level output switch 6a of the foot switch 6 is turned on, the control unit 34 sets the temperature level 5
Is set to the temperature setting unit 33 (33a to 33d), the element temperature measurement / output control units 32a and 32b are set to the output state, and the heating element 21a is set to 220 ° C. and the heating element 21b is set to 200 ° C. Is output.

On the other hand, when the set temperature level output switch 6b of the foot switch 6 is turned on, the control section 34 instructs, for example, the temperature level 3 to the temperature setting sections 33 (33a to 33d) and controls the element temperature measurement / output. Parts 32a, 32
With b set to the output state, the heating element 21a is set at 200 ° C., and the heating element 21b is set at 180 ° C. and output.

As a result, according to the present embodiment, by changing the set temperature of each heating element 21 in accordance with the shape of the forceps and the arrangement of the heating element 21, the temperature unevenness of the heating treatment section 22 is reduced, and stable coagulation is achieved. Incision ability can be obtained.

(Second Embodiment) FIGS. 9 to 12 relate to a second embodiment of the present invention, and FIG. 9 shows a second embodiment of the present invention.
FIG. 9A is a schematic explanatory view showing a heat treatment section of the coagulation / incision forceps used in the heat treatment apparatus according to the embodiment, and FIG. 9A is a schematic perspective view of the heat treatment section viewed from a side horizontal direction, and FIG.
FIG. 9A is a schematic perspective view of the heat treatment unit shown in FIG. 9A as viewed from a vertical direction, and FIG. 9C is an enlarged perspective view of the heating element shown in FIG.
FIG. 10 is a schematic explanatory view showing a modified example of the coagulation / incision forceps of FIG. 9. FIG. 10 (a) is a schematic perspective view of the heat treatment section from the side horizontal direction, and FIG. 10 (b) is FIG. 10 (c) is an enlarged perspective view of the heating element of FIG. 10 (a), and FIG. 11 is a perspective view of a heating treatment apparatus according to a second embodiment of the present invention. Flowchart to explain,
FIG. 12 is a modification of the flowchart of FIG.

In the first embodiment, the present invention is applied to the coagulation / incision forceps 2 having the heat treatment section 7 in which a plurality of heat generating elements 21 are thermally coupled to the heat transfer plate 22. However, in the second embodiment, the present invention is applied to a coagulated incision forceps having a heat treatment section in which one heat generating element having a plurality of heat generating sections is thermally connected to a heat transfer plate and disposed. The other configuration is the same as that of the first embodiment, and thus the description is omitted, and the same configuration is denoted by the same reference numeral.

As shown in FIG. 9, the heat treatment apparatus according to the second embodiment uses a coagulation / incision forceps 40 having a different shape of a heating element incorporated in the heat treatment section 41. As shown in FIGS. 9A and 9B, the heat treatment section 41 includes a plurality of heat generating sections 42, for example, three heat generating sections 42a, 42b, and 42c.
Is thermally coupled as a heating element and disposed on the heat transfer plate 22. Here, the heating element is, for example, a thin film resistor formed on a ceramic substrate or a metal substrate.

As shown in FIG. 9C, the heating element 43 is configured such that the heating sections 42 (42a to 42c) are electrically connected to the electrode section 45 via the wiring patterns 44, respectively. The electrode portion 45 has a coaxial lead wire 23 at its rear end.
a, 23b, and 23c are connected to each other,
a, 42b and 42c are energized.

The heat generating portions 42 (42 a to 42 c) are thermally coupled to the heat transfer plate 22, and are connected to the heat transfer plate 22.
The body tissue is coagulated and incised by heating the tissue. Thus, the same effects as those of the heat treatment section 7 of the first embodiment can be obtained, and the number of parts can be reduced.

FIG. 10 shows a modified example of the coagulation / cutting forceps 40. The heat treatment section 41 of the coagulation incision forceps 40b shown in FIG.
b is a heating element 43 having two heating sections 42a and 42b.
b, and the heat generating element 43b is a heat transfer plate 22 that is narrower than the heat treatment section 41 of the coagulating incision forceps 40 shown in FIG.
It is arranged near the rear of c. The fever treatment section 41b
Is the coagulating incision forceps 2b described in the first embodiment.
Has the same coagulation and incision ability as the heat treatment section 7b.

The heating treatment section 4 shown in FIGS. 9 and 10
1 and 41b have different lengths of the wiring pattern 44, and therefore have different resistance values from the electrode portion 45. The element temperature measurement / output control unit 3 described in the first embodiment.
2 (32a to 32d) is the heating element 21 (21a, 2d).
1b, 21c), the element temperatures are calculated from the resistance values. However, in the present embodiment, the heat generating portions 42 (42a, 42c) are calculated.
b, 42c), the temperature calculation formula is changed.

The operation of the heat treatment apparatus thus configured will be described with reference to FIGS. 9 and 10 and the flowchart of FIG. When the coagulation / incision forceps 40 is connected to the apparatus main body 3 as in the first embodiment, the forceps identification unit 3
1 transmits the identified type of forceps to the control unit 34 based on the type of forceps output from the forceps identifier 10.

The control section 34 determines the type of the connected forceps based on the data stored in the memory 35 in accordance with the information on the type of the forceps output from the forceps identifying section 31 (step S1). Here, the control unit 34 determines whether or not the resistance-temperature characteristics of the heating unit 42 are the same based on the determined type of forceps (step S2).

The heating elements 43 and 43b having different resistance-temperature characteristics for each heating section as described with reference to FIGS.
In the case of (1), the control unit 34 sets a temperature calculation formula for each heating unit based on the data stored in the memory 35 (step S
3).

On the other hand, in the case of the heat treatment section 7 composed of the same heat generating element 21 as shown in FIGS. 4 to 6 described in the first embodiment, the temperature calculation formula common to all the heat generating sections is used. Is set (step S4).

Next, based on the data stored in the memory 35, the control section 34 determines whether or not it is necessary to change the set temperature for each heating section (step S5).

Here, when the heat treatment section 7 of the connected coagulation / incision forceps 2 is shown in FIGS. 4 to 6, the temperature is set for each heat generation section according to the set temperature level as described in the first embodiment. (Step S6).

Further, in the case of the coagulation / incision forceps 40 having the exothermic treatment section 41 described in FIG. 9, the control section 34 reads Table 1 of the set temperature table as described in the first embodiment and sets the set temperature. The temperature is set for each heating part according to the level. The operation at this time is the same as when the heat treatment unit 7 described in the first embodiment is connected.

On the other hand, the heat treatment section 41b described with reference to FIG.
In the case of the coagulation / incision forceps 40b having the above, the control unit 34 reads Table 3 of the set temperature table as described in the first embodiment, and sets the temperature for each heat generating unit according to the set temperature level. The operation at this time is the same as the case where the coagulation / cutting forceps 2c described in the first embodiment is connected.

Although not specifically shown here, if it is not necessary to set a different temperature for each heat-generating unit, the control unit 3
4 sets the same temperature of all the heat generating parts 42 (step S7). For example, temperature levels 1 to 5 are set to 170 ° C. to 210
It is set in advance so as to be at an interval of 10 ° C between ° C.

Then, the above setting is performed, and the coagulation and incision treatment is performed in accordance with the on / off of the maximum temperature level output switch 6a or the set temperature level output switch 6b of the foot switch 6 in the same manner as described in the first embodiment. Is performed (step S8).

As a result, in the second embodiment, the same power supply is used even when the coagulation / incision forceps 40 including the heating element 43 (heating element) whose temperature characteristic changes for each of the plurality of heating sections is provided. The treatment can be performed, and the same effect as in the first embodiment can be obtained.

Further, a flowchart as shown in FIG. 12 may be followed. When the coagulation / cutting forceps 2 is connected to the apparatus main body 3 as in the flowchart of FIG.
1 transmits the identified type of forceps to the control unit 34 based on the type of forceps output from the forceps identifier 10.

The control unit 34 determines the type of the connected forceps based on the data stored in the memory 35 in accordance with the information on the type of the forceps output from the forceps identification unit 31 (step S11). Here, the control unit 34 sets a temperature calculation formula for each heating unit, if necessary, according to the determined type of forceps (step S12). Next, the temperature is set for each heat generating part according to the set temperature level (step S1).
3).

The maximum temperature level output switch 6a of the foot switch or the set temperature level output switch 6b
The output is started by turning on (step S14). The control unit 34 measures the time after the start of output by a built-in timer (not shown), and determines whether a predetermined time, for example, 3 seconds, has elapsed (step S15).

After the lapse of the predetermined time, the control section 34 sets the set temperature of each heat-generating section, which has generated heat at the individual temperature setting, to the same temperature in accordance with the lowest set value (step S1). S16). For example, as described in the first embodiment, when the output is performed at the set temperature level 3 in Table 1 of the set temperature table, the control unit 34 outputs the heat of the heating element 2 having the lowest set temperature three seconds after the output. The set temperature of the heating elements 1 and 3 is set to 180 ° C. in accordance with 180 ° C.

As a result, in order to reduce the temperature unevenness of the heat transfer section at the start of heat generation, the setting was changed for each heat generation section. , The temperature can be kept more uniform even when outputting for a long time.

(Third Embodiment) FIGS. 13 to 22
FIG. 13 relates to a third embodiment of the present invention, FIG. 13 is an apparatus configuration diagram showing an overall configuration of a heat treatment apparatus according to a third embodiment of the present invention, and FIG. 14 is used in the heat treatment apparatus of FIG. 14A is an external view of the apparatus main body, FIG. 14A is an external perspective view of the apparatus main body viewed from the front panel side, FIG. 14B is an external view showing the rear panel of FIG. FIG. 16 is a circuit block diagram illustrating a heat treatment apparatus according to a third embodiment of the present invention. FIG. 16 is a flowchart illustrating the heat treatment apparatus according to the third embodiment of the present invention. FIG. FIG. 18 is an explanatory diagram when the living tissue is grasped by only a part of the forceps, FIG. 18 is an explanatory diagram when the living tissue is grasped by the entire treatment section of the coagulation incision forceps, and FIG. 19 is a treatment section of the coagulation and incision forceps. FIG. 20 is an explanatory view when the human is not grasping a living tissue,
FIG. 21 is a graph showing a temperature change of each heating element at the time of energization in the state of FIG. 17, FIG. 21 is a graph showing a temperature change of each heating element at the time of energization in the state of FIG. 18, and FIG. 5 is a graph showing a temperature change of each heating element.

In the first and second embodiments, based on the information on the type of the forceps received from the coagulation / incision forceps 2,
Although the type of the connected forceps is determined based on the data stored in the memory 35 in advance and the output to the heating element 21 is controlled, in the third embodiment the heating The temperature difference of the element 21 is detected and the treatment unit 9 is detected.
Is configured to control the output to the heating element 21 by determining the situation when the user is grasping the living tissue. The other configuration is the same as that of the first embodiment, and thus the description is omitted, and the same configuration is denoted by the same reference numeral.

As shown in FIG. 13, the heat treatment apparatus 50 according to the third embodiment comprises a coagulation / incision forceps 2 containing a plurality of heating elements 21 and an apparatus body 51 as in the first embodiment. It is composed of The device main body 51 is connectable to a foot switch 6 having an output switch 6c.

The coagulation / incision forceps 2 is configured to detachably connect a main body connection connector 5 provided at a rear end portion of the extending connection cable 4 to the apparatus main body 51. The coagulation / incision forceps 2 has a heating treatment section 7 containing the plurality of heating elements 21 and an elastic receiving section 8 that can be separated from and attached to the heating treatment section 7 to grasp living tissue and perform treatment. The treatment section 9 is provided.

The number of the heating elements incorporated in the heating treatment section 7 differs depending on the type of forceps corresponding to the treatment. The detailed configurations of the heat treatment section 7 and the elastic receiving section 8 are the same as those in FIG. 7 described in the first embodiment. In addition, the coagulation-incision forceps 2 of the present embodiment is different from the first,
The forceps identifier 10 indicating the type of the forceps described in the second embodiment may not be provided. The apparatus main body 51 is capable of energizing up to four heating elements at the same time, and is capable of connecting coagulating incision forceps incorporating up to four heating elements.

As shown in FIG.
Has a front panel 51a and a back panel 51b. As shown in FIG. 14A, the front panel 51a includes a connector receiving portion 11, a power switch 12
A buzzer 17c, a temperature control knob 61 for controlling the temperature of the heating element 21, a control mode selection knob 62 for selecting a control mode of the heating element 21, and an element state for displaying each state of the heating element 21. Display LED 63 (6
3a to 63d) and an output state display LED 64 for displaying each output state to the heating element 21.

The control mode selection knob 62 can select one of three control modes, “output stop”, “output limit”, and “no output control”. The element status display LED 63 is configured to turn green when each heating element 21 is normal, and to turn off when the heating element is abnormal or not connected. The temperature control knob 61 can control the temperature, for example, from 160 ° C. to 220 ° C. In the present embodiment, a description will be given on the assumption that the set temperature set by the temperature control knob 61 is set to 200 ° C.

As shown in FIG. 14B, the rear panel 51b includes a foot switch connector receiving portion 18 and a power supply inlet 19, as described in the first embodiment. I have.

As shown in FIG. 15, the device main body 51
A coagulation incision forceps having a maximum of four heating elements 21 (21a to 21d) can be connected.
1a to 21d), element state detection units 71 (71a to 71d), element temperature measurement units 72 (72a to 72d), and element temperature control units 73 (73) corresponding to four channels.
a to 73d) and an output unit 74 (74a to 74d). When the number of the heating elements 21 contained in the coagulation / cutting forceps 2 is three or less, the respective heating elements are sequentially allocated from the respective channels A.

The element state detector 71 (71a to 71)
In d), it is determined whether or not each heating element is normal by determining whether or not the resistance value of the heating element is within a normal range. The signal of this determination result is transmitted to the control unit 75. The element temperature measuring section 72
(72a-72d) measures the temperature by utilizing the fact that the resistance value of the heating element 21 changes with temperature. That is, the element temperature measuring section 72 detects each resistance value of the heating element 21 by measuring a current value or a voltage value that changes due to a change in the resistance value of the heating element 21 as a resistance value detecting function, and detects the resistance value. The temperature of each heating element 21 is calculated based on the resistance value.

The element temperature controller 73 (73a to 73)
d) compares the measured data measured by the element temperature measuring unit 72 (72a to 72d) with the setting data input from the temperature setting unit 76, and sets each heating element 21 to the set temperature. The applied voltage is controlled independently for each element. The temperature setting unit 76 determines a temperature to be maintained when the heating element incorporated in the coagulation / cutting forceps is energized by a value set by a temperature adjustment knob 61 of the operation unit 36, and determines the determined temperature by the element. Temperature controller 73
(73a to 73d). still,
The set temperature is the same for all heating elements.

The output section 74 (74a to 74d) is controlled by the element temperature control section 73 (73
The output is performed based on the instructions of a to 73d). The control mode switching unit 77 switches to the control mode selected by the control mode selection knob 62 of the operation unit 36, and transmits the current control mode to the control unit 75 when necessary.

The control section 75 includes the element state detection section 7.
1 (71a-71d), the output to the normal heating element is permitted, and the output to the abnormal or unconnected heating element is prohibited. Further, the control unit 75 determines the state of the living tissue sandwiched by the coagulation / incision forceps 2 from the temperature of each heating element, and when there is a heating element that does not need to generate heat, the control mode is set to “output stop”. ", The output to the heating element is prohibited, and if" output restriction ", the temperature of the heating element is limited to a maximum of 100 ° C.

The operating section 36 is various switches such as a temperature control knob 61 provided on the front panel 51a of the apparatus main body 51 described above.
The various display LEDs provided on the front panel 51a of FIG.

The operation of the heat treatment apparatus thus configured will be described with reference to FIGS. 17 to 22 and the flowchart of FIG. The power switch 12 is turned on to start the entire heat treatment apparatus 50. When the coagulation / incision forceps 2 is connected to the device main body 51, the element state detection units 71 (71a to 71a)
d) is a heating element 21 (21a) connected to each channel.
It is determined whether or not the resistance value in the range of .about.21d) is within the normal range.

The resistance of the channel to which the heating element 21 is not connected or the channel of which the heating element 21 is disconnected is higher than the normal range, while the resistance of the channel to which the heating element 21 is short-circuited is lower than the normal range. . Thus, the element state detection units 71 (71a to 71d) determine whether the heating elements 21 (21a to 21d) are normal. If the element state detecting section 71 (71a to 71d) determines that the heating element 21 is normal, it transmits a connection signal of a normal channel to the control section 75, and the control section 75 sends the signal to the heating element 21 of the normal channel. Is permitted. On the other hand, when the element state detecting section 71 (71a to 71d) determines that the heating element 21 is abnormal, the element state detecting section 71 transmits an unconnected signal of the abnormal channel to the control section 75, and the control section 75 generates the abnormal channel heat. The energization of the element 21 is prohibited.

At the same time, the control unit 75 controls the element status display LEDs 63 (63
In a to 63d), the channel that is normal is turned on in green, and the channel that is abnormal or not connected is turned off.

Here, a description will be given of a case where the coagulation / incision forceps 2 having three built-in heating elements 21 is used.
The three heating elements 21 built in the coagulating incision forceps 2
It is assumed that all of a to 21c are normal. At this time, the element state detection units 71 (71a to 71d) output the channels a, b,
It is determined that the heating elements 21a to 21c connected to the channel c are normal, and the channel d is determined that the heating element 21d is not connected or disconnected.

The control unit 75 includes an element state detection unit 71 (71
a-71d), the connection and non-connection signals are received, and based on these signals, energization of the channels a, b, and c is permitted, and energization of the channel d is prohibited. At the same time, the control unit 75 turns on the element state display LEDs 63a to 63c and turns off the element state display LEDs 63d.

When the output switch 6c of the foot switch 6 is pressed down, the foot switch input section 37 transmits an output start signal to the control section 75 via the foot switch connector receiving section 18. The control unit 75 that has received the output start signal
Transmits a control signal to the output units 74 (74a to 74d) to energize the heating elements 21a to 21c determined to be normal, and the output unit 74 (74a to 74d) sends the control signals to the normal heating elements 21a to 21c. The energization is started (step S2
1) The heating elements 21a to 21c are heated. at the same time,
The control unit 75 turns on the output state display LED 64 and causes the buzzer 17c to emit a continuous sound (step S22).

At this time, there are three situations when the treatment section 9 of the coagulation / incision forceps 2 is gripping the living tissue. As shown in FIG. 17, the living tissue 80 is grasped by only a part of the treatment section 9 of the coagulation / cutting forceps 2, and as shown in FIG. 19 is a state in which the treatment section 9 of the coagulation / incision forceps 2 does not grip the living tissue 80 at all. First, the case shown in FIG. 17 will be described.

In a state where the living tissue 80 is gripped by only a part of the treatment section 9 of the coagulating incision forceps 2, each heating element 2
Each heating element 21 when power is supplied to 1a to 21c
FIG. 20 shows the temperature changes a to 21c.

When power is supplied to the heating elements 21a to 21c, the heating elements 21a to 21c generate heat. In the vicinity of the heating element 21a, the heat generated from the heating element 21a is transmitted to the living tissue 80 through the heating plate 22 and heated, so that coagulation and incision proceeds.

The living tissue 80 contains a lot of water therein, and immediately after the start of heat generation, the living tissue 8
The heat applied to zero is used to evaporate the water. For this reason, the temperature of the heat generating plate 22 in a portion in contact with the living tissue 80 is low, and is about 100 ° C. Therefore, the temperature of the heat generating element 21a immediately after the start of heat generation is low, and the temperature rise is slow because most of the generated heat is taken by the heat generating plate 22.

On the other hand, the heating element 2
Since there is no living tissue 80 in the vicinity of 1b and 21c, the heat generated by the heating elements 21b and 21c is
b, 21c is used to heat itself. Therefore, the heating elements 21b and 21c rapidly rise to the set temperature.

[0098] However, only the part holding the living tissue 80 needs to be heated. Heat generated in other portions is a waste of electric energy and a heat generating plate 22 after output is turned off.
, The cooling time is increased. In order to solve this problem, in the present embodiment, control by the control unit 75 is performed as described below.

When the output switch 6c of the foot switch 6 is depressed, the control unit 75 first selects the "output stop", "output limit", "no output control" or the like selected by the control mode selection knob 62. The control mode is confirmed (step S23). When the control mode is “no output control”, the control unit 75 performs the subsequent processing steps S24 to S24.
The output is continued and the output control ends until the output switch 6c is released (state in which the output switch 6c is still pressed) without performing step 35.

When the control mode is other than “no output control”, that is, when the control mode is “output stop” or “output limit”
In the case of (1), the control unit 75 measures the time after the start of output by a built-in timer (not shown) in a state where the output switch 6c is still pressed (step S24), and determines a predetermined time T ( After elapse of, for example, 0.5 seconds (steps S25 to S26), the heating elements 21a to 21c are sent from the element temperature measuring unit 72 (72a to 72d).
(Step S).
27).

Thereafter, the control unit 75 controls the heating elements 21a to 21a.
Among the heating elements 21c, the heating element 21a having the lowest temperature is identified (step S28), and the temperature difference between the heating element 21a and the heating element 21a having the lowest temperature is 60 ° C. or more.
21c is identified (step S29).

The control unit 75 controls the identified heating element 21b,
For 21c, if the control mode is "output stop", heat generation is prohibited, and if "control output", the heat generation is limited to, for example, 100 ° C. (step S30). At the same time, the control unit 75 changes the lighting of the output state display LED 64 to blink, changes the continuous sound of the buzzer 17c to intermittent sound (step S31), and ends.

Here, as shown in FIG.
The temperature ta of a rises slowly, and the temperatures tb and tc of the heating elements 21b and 21c rise fast. At a certain time T, t
The temperature difference between a and tb, tc reaches 60 ° C. or more.

Therefore, the control unit 75 controls the heating elements 21b, 2
Prohibits or restricts heat generation to 1c. As a result, the temperatures tb and tc of the heating elements 21b and 21c gradually decrease as indicated by solid lines or dotted lines in the drawing.

As a result, as shown in FIG. 17, when the living tissue 80 is grasped by only a part of the treatment section 9 of the coagulation / incision forceps 2, the heat generated by the heating element causes the living tissue 80 to be grasped. Only the part where it is can be heated.

Next, a case where the living tissue 80 is gripped or not gripped by the whole treatment section 9 of the coagulated incision as shown in FIG. 18 or FIG. 19 will be described.
FIG. 21 is a graph showing the temperature change of each of the heating elements 21a to 21c in the case shown in FIG. 18, and FIG. 22 is a graph showing the temperature change of each of the heating elements 21a to 21c in the case shown in FIG. is there.

As shown in FIG. 18, in a state where the living tissue 80 is gripped by the entire treatment section 9 of the coagulation / incision forceps 2, when the heating elements 21a to 21c are energized,
Although each of the heating elements 21a to 21c generates heat, the temperature of the heating elements 21a to 21c rises slowly as shown in FIG.

On the other hand, as shown in FIG. 19, when the heating elements 21a to 21c are energized in a state where the living tissue 80 is not gripped by the treatment section 9 of the coagulation / incision forceps 2, the heating elements 21a To 21c generate heat, and the temperature of these heating elements 21a to 21c rises rapidly as shown in FIG.

The output control of the control unit 75 for these heating elements 21a to 21c is executed in accordance with the flowchart of FIG. 16, but there is no large temperature difference between the heating elements 21a to 21c. Is determined. Then, the control unit 75 controls the heating elements 21a to 21c.
Is calculated (step S32), and the average temperature Tave and a predetermined temperature set value (for example, 1)
10 ° C.) (step S33).

Here, when the average temperature Tave is 110 ° C. or higher, the control unit determines that the treatment unit 9 of the coagulation / incision forceps 2 is outputting the living tissue 80 without sandwiching it, as shown in FIG. 75 judges. When the control mode is “output stop”, the control unit 75 controls all the heating elements 21.
Heat generation to a to 21c is prohibited. When the control mode is “output restriction”, the control unit 75 restricts heat generation to all the heating elements 21a to 21c to, for example, 100 ° C. (step S34). At the same time, the control unit 75 changes the lighting of the output state display LED 64 to blinking, changes the continuous sounding of the buzzer 17c to intermittent sounding (step S35), and ends. As a result, the temperatures tb and tc of the heating elements 21b and 21c decrease to the normal temperature as indicated by the solid line in FIG. 22 when the control mode is “output stopped”, and when the control mode is “output limited”. Gradually decreases to around 100 ° C. as indicated by the dotted line in FIG.

On the other hand, when the average temperature Tave is 110 ° C. or less, the control unit 75 determines that the coagulated incision forceps 2 is gripping the living tissue 80 as a whole as shown in FIG. No prohibition or restriction. And the living tissue 8
0, until the treatment section 9 of the coagulation / incision forceps 2 no longer grips the living tissue 80, the living tissue 80 is treated while the temperature rise of the heating elements 21a to 21c is slow as shown in FIG. Keep adding.

As described above, at a given time T from the start of the output, the temperature difference between the heating element having the lowest temperature and the heating element having a certain value or more, and a large difference in temperature between the heating elements occurs. When the average temperature of all the heating elements reaches a certain value or more when there is no output, the output to all the heating elements is stopped or limited, thereby suppressing the power consumption of the coagulating incision forceps 2 or
It is possible to accelerate the cooling of the heating plate 22 of the coagulation / cutting forceps 2 after the output is completed. As a result, the heat treatment apparatus 50 according to the third embodiment can avoid wasting electric energy, and can shorten the cooling time of the heat generation plate 22 after the output is completed.

(Fourth Embodiment) FIGS. 23 to 26
FIG. 23 relates to a fourth embodiment of the present invention. FIG. 23 is a flowchart for explaining a heat treatment apparatus according to the fourth embodiment of the present invention. FIG. FIG. 25 is a graph showing a temperature change of each heating element according to the flowchart of FIG. 23 in the state of FIG. 18; FIG. 26 is a graph showing a temperature change of each heating element according to the flowchart of FIG. It is a graph showing a temperature change.

In the third embodiment, the output to the heating element 21 is determined by detecting the temperature difference of the heating element 21 and judging the situation when the treatment section 9 is gripping the living tissue. However, in the fourth embodiment, heat generation is detected by detecting a temperature change of the heating element 21 and judging a situation when the treatment section 9 is gripping a living tissue. The output to the element 21 is controlled. The other configuration is the same as that of the third embodiment, so that the description is omitted, and the same configuration is denoted by the same reference numeral.

That is, the heat treatment apparatus according to the fourth embodiment is controlled by the control unit 75 in accordance with the flowchart of FIG. Hereinafter, the output control of the control unit 75 will be described. The power switch 12 is turned on to start the entire heat treatment apparatus. When the coagulation / incision forceps 2 is connected to the apparatus main body 51, the element state detection unit 7 is used as described in the third embodiment.
1 (71a to 71d) determines whether or not the resistance value of the heating element 21 (21a to 21d) connected to each channel is within a normal range, and transmits the determination result to the control unit 75.

The control unit 75 includes the element state detection unit 71
Based on the determination results (71a to 71d), energization of the heating element of the normal channel is permitted or energization of the heating element of the abnormal channel is prohibited. At the same time, the control unit 7
5 controls the display unit 38 to turn on the element status display LEDs 63 (63a to 63d) corresponding to each channel in green for a channel in which the heating element is normal, and to turn off a channel in an abnormal or unconnected state.

Here, a description will be given of a case where the coagulation / incision forceps 2 having three built-in heating elements 21 is used, as in the third embodiment. It is assumed that all of the three heating elements 21a to 21c included in the coagulation / incision forceps 2 are normal. At this time, the element state detection units 71 (71a to 71a)
71d) determines that the heating elements 21a to 21c connected to the channels a, b, and c are normal, and determines that the heating element 21d of the channel d is unconnected or disconnected.

The control unit 75 includes an element state detection unit 71 (71
a-71d), the connection and non-connection signals are received, and based on these signals, energization of the channels a, b, and c is permitted, and energization of the channel d is prohibited. At the same time, the control unit 75 turns on the element state display LEDs 63a to 63c and turns off the element state display LEDs 63d.

When the output switch 6c of the foot switch 6 is pressed down, the foot switch input section 37 transmits an output start signal to the control section 75 via the foot switch connector receiving section 18. The control unit 75 that has received the output start signal
Transmits a control signal to the output units 74 (74a to 74d) to energize the heating elements 21a to 21c determined to be normal, and the output unit 74 (74a to 74d) sends the control signals to the normal heating elements 21a to 21c. The energization is started (step S4
1) The heating elements 21a to 21c are heated. at the same time,
The control unit 75 turns on the output state display LED 64 and causes the buzzer 17c to emit a continuous sound (step S42).

At this time, there are three situations shown in FIGS. 17 to 19 when the treatment section 9 of the coagulation / incision forceps 2 is gripping the living tissue, as described in the third embodiment.
In the situation as shown in FIGS. 17 to 19, each heating element 21 when the control flow of the present embodiment is applied.
Graphs showing the temperature changes of a to 21c are shown in FIG.
FIG. 25 and FIG. Note that the solid lines in FIGS. 24 and 26 are graphs of the temperature change of the heating element when the heat generation to the heating element is prohibited, and the dotted line is the graph when the heat generation to the heating element is restricted.

When the output switch 6c of the foot switch 6 is pressed down, the control unit 75 first sets the "output stop", "output limit", "output control no", etc. selected by the control mode selection knob 62. The control mode is confirmed (step S43). When the control mode is “no output control”, the control unit 75 performs the subsequent processing steps S44 to S44.
The output is continued and the output control ends until the output switch 6c is released (the state in which the output switch 6c is still pressed) without performing step 57.

When the control mode is other than "no output control", that is, when the control mode is "output stop" or "output restriction"
In the case of, the control unit 75 controls the element temperature measurement unit 72 (72a to 72a
From 72d), information on the temperatures ta ', tb', and tc 'of the heating elements 21a to 21c at the start of output is received and stored (step S44).

The control unit 75 sets the output switch 6c
Is still pressed (step S45), the time after the output is started is measured by a built-in timer (not shown), and after a predetermined time τ (for example, 0.25 seconds) has elapsed from the start of the output (step S45). S46 to Step S
47), the temperature ta of each of the heating elements 21a to 21c after a predetermined time 1τ from the element temperature measurement unit 72 (72a to 72d).
The information of tb and tc is received (step S48).

The control unit 75 determines the temperature t after a predetermined time 1τ.
a, tb, tc, and temperatures ta ′, tb ′,
By subtracting tc ′ from each other, each heating element 21a-2
The temperature changes Δta, Δtb, Δtc of 1c are calculated (step S49). That is, (Δta = ta−ta ′, Δt
b = tb−tb ′, Δtc = tc−tc ′).

Then, the control unit 75 identifies the heating element 21a having the smallest temperature change among the calculated temperature changes Δta, Δtb, and Δtc of the heating elements 21a to 21c (step S50). Heating element 2 which is
Heating elements 21b and 21c whose difference in temperature change from 1a is, for example, 30 ° C. or more are identified (step S51).

The control unit 75 controls the identified heating element 21b,
With respect to 21c, when the control mode is "output stop", heat generation is prohibited, and when it is "output restriction", heat generation is limited to, for example, 100 ° C. (step S52). At the same time, the control unit 75 changes the lighting of the output state display LED 64 to blink, changes the continuous sound of the buzzer 17c to intermittent sound (step S53), and ends the process.

Here, as shown in FIG.
The temperature ta of a rises slowly, and the temperatures tb and tc of the heating elements 21b and 21c rise fast. At a certain time τ, t
The difference in temperature change between a and tb and tc reaches 30 ° C. or more.

The control section 75 prohibits the heating elements 21b and 21c from generating heat. Thereby, the heating elements 21b, 21c
When the control mode is "output stop", the temperatures tb and tc are lowered to room temperature as shown by a solid line in FIG. 24, and when the control mode is "output limit", they are shown by dotted lines in FIG. As shown in FIG.

As a result, as shown in FIG. 17, when the living tissue 80 is gripped by only a part of the treatment section 9 of the coagulation / incision forceps 2, the heat generated by the heating element causes the living tissue 80 to be gripped. Only the part where it is can be heated.

Here, when there is no heating element satisfying the condition, that is, when the heating element 2 having the smallest temperature change is used.
If there is no heating element 21b, 21c having a difference in temperature change from that of the heating element 21a, for example, 30 ° C. or more,
Is the average value ΔT of the temperature change of all the heating elements 21a to 21c.
ave is calculated (step S54), and the average value ΔTave of the temperature change is set to a predetermined temperature change value (for example, 30).
C.) (step S55).

The average value ΔTave of the temperature change is 30
If the temperature is higher than or equal to ° C., the control unit 75 determines that the treatment unit 9 of the coagulation / incision forceps 2 does not sandwich the living tissue 80 as shown in FIG.

When the control mode is "output stop", the control section 75 prohibits heat generation to all the heating elements 21a to 21c. When the control mode is “output restriction”, the control unit 75 controls all the heating elements 21a to 21a.
c) to 100 ° C., for example (step S5).
6) At the same time, the control unit 75 changes the lighting of the output state display LED 64 to blinking, changes the continuous sounding of the buzzer 17c to intermittent sounding (step S35), and ends. As a result, the temperatures tb and tc of the heating elements 21b and 21c decrease to the normal temperature as shown by the solid line in FIG. 26 when the control mode is "output stop", and when the control mode is "output limit". 26, as represented by the dotted line in FIG.
Gradually lower to around ° C.

On the other hand, the average value ΔTave of the temperature change is 30 ° C.
In the following cases, the control unit 75 determines that the treatment unit 9 of the coagulation-incision forceps 2 is grasping the living tissue 80 as a whole and is currently performing coagulation-incision as shown in FIG. No prohibition or restriction. Then, until the treatment of the living tissue 80 is completed and the treatment section 9 of the coagulation / incision forceps 2 no longer grips the living tissue 80, as shown in FIG.
The treatment is continued to be applied to the living tissue 80 while the temperature rise of ~ 21c is slow, and the output control ends.

As described above, in the fourth embodiment, it is inferred from the difference in temperature rise that a temperature difference occurs, as in the third embodiment. Since the output to the heating element can be stopped or limited before the temperature difference shown in the embodiment is reached, an effect equivalent to or higher than that of the third embodiment can be obtained. As a result, in the fourth embodiment, in addition to the effects of the third embodiment, it is possible to obtain more power saving and a shorter cooling time.

(Fifth Embodiment) FIGS. 27 and 28 relate to a fifth embodiment of the present invention, and FIG. 27 is a flowchart for explaining a heat treatment apparatus according to a fifth embodiment of the present invention. FIG. 28 is a graph showing a temperature change of each heating element according to the flowchart of FIG. 27 in the state of FIG. In the fourth embodiment, the output to the heating element 21 is controlled by detecting a change in the temperature of the heating element 21 and judging the situation when the treatment section 9 is gripping the living tissue. However, in the fourth embodiment, the heating element that has reached the set value is detected, and the state when the treatment section 9 is gripping the living tissue is determined. Is configured to control the output. The other configuration is the same as that of the third embodiment, so that the description is omitted, and the same configuration is denoted by the same reference numeral.

Hereinafter, the output control of the control unit 75 will be described with reference to the flowchart of FIG. The power switch 12 is turned on to start the entire heat treatment apparatus. When the coagulation / incision forceps 2 is connected to the apparatus main body 51, the element state detection sections 71 (71a to 71d) are provided as described in the third embodiment.
Are heating elements 21 (21a to 21a-2) connected to each channel.
Determining whether the resistance value of 1d) is within a normal range,
This determination result is transmitted to the control unit 75.

The control unit 75 includes the element state detection unit 71
Based on the determination results (71a to 71d), energization of the heating element of the normal channel is permitted or energization of the heating element of the abnormal channel is prohibited. At the same time, the control unit 7
5 controls the display unit 38 to turn on the element status display LEDs 63 (63a to 63d) corresponding to each channel in green for a channel in which the heating element is normal, and to turn off a channel in an abnormal or unconnected state.

Here, a description will be given of a case where the coagulation / incision forceps 2 having three built-in heating elements 21 is used in the same manner as in the third embodiment. It is assumed that all of the three heating elements 21a to 21c included in the coagulation / incision forceps 2 are normal. At this time, the element state detection units 71 (71a to 71a)
71d) determines that the heating elements 21a to 21c connected to the channels a, b, and c are normal, and determines that the heating element 21d of the channel d is unconnected or disconnected.

The control unit 75 includes an element state detection unit 71 (71
a-71d), the connection and non-connection signals are received, and based on these signals, energization of the channels a, b, and c is permitted, and energization of the channel d is prohibited. At the same time, the control unit 75 turns on the element state display LEDs 63a to 63c and turns off the element state display LEDs 63d.

When the output switch 6c of the foot switch 6 is pressed down, the foot switch input section 37 transmits an output start signal to the control section 75 via the foot switch connector receiving section 18. The control unit 75 that has received the output start signal
Transmits a control signal to the output units 74 (74a to 74d) to energize the heating elements 21a to 21c determined to be normal, and the output unit 74 (74a to 74d) sends the control signals to the normal heating elements 21a to 21c. The energization is started (step S6).
1) The heating elements 21a to 21c are heated. at the same time,
The control unit 75 turns on the output state display LED 64 and causes the buzzer 17c to emit a continuous sound (step S62).

At this time, a graph showing the temperature change of each of the heating elements 21a to 21c when the control flow of the present embodiment is applied in the situation shown in FIG. 17 is shown in FIG.
It is. Note that the solid line in FIG. 28 is a graph of the temperature change of the heating element when the heat generation to the heating element is prohibited, and the dotted line is a graph of the temperature change of the heating element when the heating to the heating element is restricted.

When the output switch 6c of the foot switch 6 is depressed, the control unit 75 first sets the "output stop", "output limit", "output control no", etc. selected by the control mode selection knob 62. The control mode is confirmed (step S63). When the control mode is “no output control”, the control unit 75 executes the subsequent processing steps S64 to S64.
Until the output switch 6c is released (state in which the output switch 6c is still pressed) without performing step 68, the output is continued, and the output control ends.

When the control mode is other than "no output control", that is, when the control mode is "output stop" or "output restriction"
In this case, the control unit 75 monitors the temperature of each of the heating elements 21a to 21c while the output switch 6c is being pressed (Steps S64 to S66).

First, the control unit 75 includes the element temperature measurement unit 72
The temperature values of the heating elements 21a to 21c are received from (72a to 72d) (step S65). Then, the control unit 75
Compares the temperature of each of the heating elements 21a to 21c with the set temperature (step S66).

Here, when there is a heating element that has reached the set temperature, the control unit 75 determines that the corresponding heating element is present in a region where the living tissue 80 is not gripped, or that the living tissue 80 It is determined that the living tissue 80 has been present in the grasped area but the living tissue 80 has been cut and the living tissue 80 has separated from the heating plate 22. Then, when the control mode is “output stop”, the control unit 75 prohibits heat generation to the corresponding heating element. When the control mode is “output limit”,
The control unit 75 limits the heat generation to the corresponding heating element to, for example, 100 ° C. (step S67). At the same time, the control unit 75 changes the lighting of the output state display LED 64 to blinking, and
The continuous sound of 7c is changed to intermittent sound (step S6).
8), and the process ends.

On the other hand, for a heating element that has not reached the set temperature, the control unit 75 determines that coagulation and incision is being performed, and
No prohibition or restriction of output. These processing steps S
Steps S64 to S66 are continued while the output switch 6c is pressed.

In the situation as shown in FIG. 17, the heating elements 21b and 21c exist in a region where the living tissue 80 is not gripped. For this reason, these heating elements 21b, 2
The temperature of 1c rises to the set temperature immediately after the outputs of the output units 74b and 74c. Therefore, these heating elements 21b, 21
The output to c is prohibited or restricted by the control unit 75. Thus, the temperature t of the heating elements 21b and 21c is
When the control mode is “output stop”, b and tc decrease to room temperature as shown by a solid line in FIG. 28, and when the control mode is “output limit”, as shown by a dotted line in FIG. It gradually decreases to around 100 ° C.

On the other hand, the heating element 21a exists in a region where the living tissue 80 is gripped. Therefore, the temperature of the heating element 21a is low immediately after the output of the output unit 74a, but the temperature rises rapidly immediately after the coagulation and incision into the living tissue 80 ends and the living tissue 80 separates from the heating plate 22, and the set temperature increases. Reach Therefore, when the temperature of the heating element 21a reaches the set temperature, the output is prohibited or restricted by the control unit 75. As a result, the temperature ta of the heating element 21a drops to the normal temperature as shown by the solid line in FIG. 28 when the control mode is "output stop", and when the control mode is "output limit" in FIG. 100 as represented by the middle dotted line
Gradually lower to around ° C.

As described above, when the living tissue 80 is sandwiched only by a part of the heating plate 22, the heating element existing in the region where the living tissue 80 was not gripped or the living tissue The output to the heating element existing in the area where the coagulation and incision to the coagulation and incision 80 has been completed can be stopped and the output can be limited. Time can be reduced.

Therefore, in the present embodiment, the temperature of the heating element existing in the region where the living tissue 80 was not grasped originally or the temperature of the heating element existing in the region where coagulation and incision on the grasped living tissue 80 has been completed is completed. The power consumption of the coagulation incision forceps 2 is suppressed by stopping the output to the heating element or limiting the output by utilizing the fact that the temperature rises to the set temperature, and the cooling of the heating plate 22 of the coagulation incision forceps 2 after the output is completed. It is possible to haveten it. As a result, in the fifth embodiment, in addition to the effects of the third and fourth embodiments, further power saving is achieved,
The effect of shortening the cooling time after the output is completed can be obtained.

It should be noted that the present invention is not limited to the above-described embodiment, but can be variously modified without departing from the gist of the present invention.

[Appendix] (Appendix 1) A treatment section having a heating means for generating heat for treating an affected part, and a heating section for setting heating information for each of a plurality of different heating sections provided in the heating section. A heat treatment comprising: setting means; and temperature control means for independently controlling a plurality of heat generating portions of the heat generating means based on the plurality of heat information set by the heat setting means. apparatus.

(Additional Item 2) A treatment section having a heat generating means for generating heat for treating an affected part, a detecting means for detecting a heat generating state for each of a plurality of different heat generating portions provided in the heat generating means, Heat generating means for setting heat generating information for each of a plurality of different heat generating portions provided in the heat generating means; heat generating states of the heat generating means detected by the detecting means; and plural heat generating information set by the heat generating setting means And a temperature control means for independently controlling a plurality of heat-generating parts of the heat-generating means based on the heat-treatment means.

(Additional Item 3) The heat generation treatment apparatus according to additional item 1 or 2, wherein the heat generation setting means sets the plurality of pieces of heat generation information in accordance with the treatment section.

(Additional Item 4) The heat generation treatment apparatus according to Additional Item 1 or 2, wherein the heat generation setting means sets different heat generation information for each of a plurality of different heat generation portions provided in the heat generation means.

(Additional Item 5) The additional information, wherein the heat generation setting means resets the heat generation information for a plurality of different heat generation portions provided in the heat generation means after a lapse of a predetermined time from the start of output. 3. The heat treatment device according to 1 or 2.

(Additional Item 6) The heat treatment apparatus according to additional item 2 or 3, wherein the detecting means detects a temperature difference between a plurality of different heat generating portions provided in the heat generating means.

(Additional Item 7) The heating treatment according to additional item 2 or 3, wherein the detecting means detects a temperature change rate between a plurality of different heat generating portions provided in the heat generating means for a predetermined time. apparatus.

(Additional Item 8) A treatment section for performing treatment by generating heat on the affected part, a heating section provided in the treatment section and having a plurality of different heating sections, and a plurality of different heating sections provided in the heating section. Temperature setting means for setting a temperature for each of the temperature setting means, and a temperature control means for independently controlling a plurality of heat generating portions of the heat generating means to generate heat at a temperature set by the temperature setting means. A heat treatment device characterized by the above-mentioned.

(Additional Item 9) The heat treatment apparatus according to Additional Item 8, wherein at least two different temperatures are set for a plurality of different heat generating portions provided in the heat generating means.

(Supplementary Item 10) An identification means for judging the type of the treatment section is provided, and the temperatures of a plurality of different heating portions provided in the heating means are set in accordance with the identification result of the identification means. The heat treatment device according to any one of additional items 8 and 9, wherein

(Additional Item 11) The temperature parameter setting means for setting the temperature characteristic of the resistance value for each of the plurality of different heating portions provided in the heating means and the temperature characteristics of the resistance values of the plurality of different heating portions. 11. The heat treatment apparatus according to any one of items 8 to 10, further comprising a temperature measuring unit for obtaining a temperature.

(Additional Item 12) The heat treatment apparatus according to additional item 11, wherein the temperature parameters of the plurality of heat generating portions are set according to the identification result of the identification means.

(Additional Item 13) The additional item 1 is characterized in that the temperature setting means makes the set temperature the same for a plurality of different heat generating portions provided in the heat generating means after a predetermined time has elapsed from the start of output. 13. The heat treatment device according to any one of items 1 to 12.

(Additional Item 14) A power supply for independently supplying power to each of the plurality of heat generating means disposed on the treatment tool, and an output control of the power from the power supply to the plurality of heat generating means of the treatment tool And a plurality of temperature detecting means for detecting a temperature of each of the plurality of arranged heating means of the treatment tool, wherein the control unit is provided between the plurality of arranged heating means of the treatment tool. A power supply for a heat treatment device, characterized in that the power output of each of these heat generating means is controlled by utilizing the temperature difference of the heat generating means.

(Additional Item 15) A power supply for independently supplying power to each of the plurality of heat generating means disposed on the treatment tool, and an output control of the power from the power supply to the plurality of heat generating means of the treatment tool And a plurality of temperature detecting means for detecting a temperature of each of the plurality of arranged heating means of the treatment tool, wherein the control unit is provided between the plurality of arranged heating means of the treatment tool. Using the difference in the rate of temperature rise of
A power supply for a heating treatment tool, wherein the power output of each of these heating means is controlled.

(Additional Item 16) A power supply for independently supplying power to each of the plurality of heat generating means disposed on the treatment tool, and an output control of the power from the power supply to the plurality of heat generating means of the treatment tool And a plurality of temperature detecting means for detecting the temperature of each of the plurality of arranged heating means of the treatment tool, wherein the control unit is provided with the plurality of heating means of the treatment tool A power supply for a heat treatment instrument, wherein output control is sequentially performed only on a heat generating portion having reached a set temperature.

(Additional Item 17) A power supply for independently supplying power to each of the plurality of heat generating means disposed on the treatment tool, and an output control of the power from the power supply to the plurality of heat generating means of the treatment tool And a plurality of temperature detecting means for detecting the temperature of each of the plurality of arranged heating means of the treatment tool, the control unit, by a selection switch of the power supply body, A power supply for a heating treatment tool, wherein the power supply to the plurality of heating means of the treatment tool is stopped or limited.

(Additional Item 18) The power supply for a heat-treating instrument according to additional item 14 or 15, wherein the control section makes a determination to perform power output control at least once after a predetermined time has elapsed.

(Additional Item 19) The control section controls the output of electric power for a heat generating portion where the temperature of the plurality of heat generating means of the treatment tool is the lowest and a heat generating portion where the temperature is higher than a set value. Item 14 or 1 characterized by performing
The power supply for a heat treatment instrument according to claim 8.

(Additional Item 20) The control section calculates an average value of the temperatures when a temperature difference equal to or greater than a set value does not occur between the plurality of heat generating means of the treatment tool. Additional items 14, 1 characterized in that when the value is equal to or more than the set value, the output of electric power is controlled for all the heat generating portions.
The power supply for a heat treatment instrument according to any one of claims 8 and 19.

(Supplementary Note 21) The control unit may be configured to control a heat-generating part of the plurality of heat-generating units of the treatment tool where the temperature rise rate is the lowest and a heat-generating part where the temperature rise rate is equal to or more than a set value. Item 19. The power supply for a heat treatment instrument according to additional item 15 or 18, wherein the power supply control is performed.

(Additional Item 22) The control unit calculates an average value of the temperature rise rates when a temperature rise rate equal to or higher than a set value does not occur between the plurality of heat generating means of the treatment tool. The power supply for a heat treatment instrument according to any one of additional items 15, 18, and 21, wherein when the average value is equal to or more than the set value, the power output control is performed for all the heat generating portions.

[0174]

As described above, according to the present invention, it is possible to realize a heat treatment apparatus capable of forming a suitable temperature distribution and performing stable treatment for treatment sections having various shapes. Can be.

[Brief description of the drawings]

FIG. 1 is an apparatus configuration diagram showing an overall configuration of a heat treatment apparatus according to a first embodiment of the present invention.

FIG. 2 is an external view of an apparatus main body used in the heat treatment apparatus of FIG.

FIG. 3 is an explanatory view showing a coagulating incision forceps used in the heat treatment apparatus of FIG. 1;

FIG. 4 is a schematic explanatory view showing a heat treatment section of the coagulation / incision forceps of FIG. 3;

FIG. 5 is a schematic explanatory view showing a modified example of the coagulation / cutting forceps of FIG. 4;

FIG. 6 is a schematic explanatory view showing another modified example of the coagulation-incision forceps of FIG. 4;

FIG. 7 is a detailed explanatory view showing a treatment section of the coagulation / incision forceps of FIG. 3;

FIG. 8 is a circuit block diagram illustrating a heat treatment apparatus according to the first embodiment of the present invention.

FIG. 9 is a schematic explanatory view showing a heat treatment section of a coagulation / incision forceps used in the heat treatment apparatus according to the second embodiment of the present invention.

FIG. 10 is a schematic explanatory view showing a modified example of the coagulation / incision forceps of FIG. 9;

FIG. 11 is a flowchart illustrating a heat treatment apparatus according to a second embodiment of the present invention.

FIG. 12 is a modified example of the flowchart of FIG. 11;

FIG. 13 is an apparatus configuration diagram showing an entire configuration of a heat treatment apparatus according to a third embodiment of the present invention.

14 is an external view of an apparatus main body used in the heat treatment apparatus of FIG.

FIG. 15 is a circuit block diagram illustrating a heat treatment apparatus according to a third embodiment of the present invention.

FIG. 16 is a flowchart illustrating a heat treatment apparatus according to a third embodiment of the present invention.

FIG. 17 is an explanatory diagram when a living tissue is grasped by only a part of the treatment section of the coagulating incision forceps;

FIG. 18 is an explanatory view when the living tissue is gripped by the entire treatment section of the coagulating incision forceps.

FIG. 19 is an explanatory diagram when the treatment section of the coagulation-incision forceps is not gripping a living tissue;

20 is a graph showing a temperature change of each heating element at the time of energization in the state of FIG. 17;

FIG. 21 is a graph showing a temperature change of each heating element during energization in the state of FIG. 18;

FIG. 22 is a graph showing a temperature change of each heating element during energization in the state of FIG. 19;

FIG. 23 is a flowchart illustrating a heat treatment apparatus according to a fourth embodiment of the present invention.

24 is a graph showing a temperature change of each heating element according to the flowchart of FIG. 23 in the state of FIG. 17;

25 is a graph showing a temperature change of each heating element according to the flowchart of FIG. 23 in the state of FIG. 18;

26 is a graph showing a temperature change of each heating element according to the flowchart of FIG. 23 in the state of FIG. 19;

FIG. 27 is a flowchart illustrating a heat treatment apparatus according to a fifth embodiment of the present invention.

28 is a graph showing a temperature change of each heating element according to the flowchart of FIG. 27 in the state of FIG. 17;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Heat treatment device 2, 2b, 2c ... Coagulation incision forceps 3 ... Device body 6 ... Foot switch 7, 7b, 7c ... Heat treatment unit 9 ... Treatment unit 10 ... Forceps identifier 21 (21a-21d) ... Heating element (heat generation) Means) 22, 22b, 22c Heat transfer plate 31 Forceps identification unit 32 (32a to 32d) Element temperature measurement / output control unit 33 (33a to 33d) Temperature setting unit 34 Control unit 35 Memory

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[Procedure amendment]

[Submission date] March 7, 2001 (2001.3.7)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0123

[Correction method] Change

[Correction contents]

The control unit 75 sets the output switch 6c
Is still pressed (step S45), the time after the output is started is measured by a built-in timer (not shown), and after a predetermined time τ (for example, 0.25 seconds) has elapsed from the start of the output (step S45). S46 to Step S
47), where the element temperature measuring part 72 (72a to 72d)
Temperatures ta and t of the respective heating elements 21a to 21c after the fixed time τ
The information of b and tc is received (step S48).

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0124

[Correction method] Change

[Correction contents]

The control unit 75 determines the temperature ta,
tb, tc and the temperatures ta ′, tb ′, t at the start of output.
By subtracting c ′, each of the heating elements 21 a to 21 a
The temperature changes Δta, Δtb, Δtc of c are calculated (step S49). That is, (Δta = ta−ta ′, Δtb
= Tb−tb ′, Δtc = tc−tc ′).

Claims (3)

[Claims] 1. A treatment section having a heat generating means for generating heat for treating an affected part; heat generating setting means for setting heat generating information for each of a plurality of different heat generating portions provided in the heat generating means; And a temperature control means for independently controlling a plurality of different heat generating portions of the heat generating means based on the plurality of heat information set by the setting means. 2. A treatment section having a heat generating means for generating heat for treating an affected part; a detecting means for detecting a heat generation state for each of a plurality of different heat generating portions provided in the heat generating means; Heat generation setting means for setting heat generation information for each of a plurality of different heat generation portions provided on the basis of the heat generation state of the heat generation means detected by the detection means and the plurality of heat generation information set by the heat generation setting means And a temperature control means for independently controlling a plurality of heat generating portions different from each other in the heat generating means. 3. The heat treatment apparatus according to claim 1, wherein the heat generation setting unit sets the plurality of pieces of heat information according to the treatment unit.