JPH02167163A - Hyperthermia device - Google Patents

Abstract

PURPOSE:To uniformly heat the living body part in the body cavity by providing a planar heating body composed of heat generating conductive rubber to the leading end part of a probe and supplying a current to the planar heating body. CONSTITUTION:The air in a balloon-shaped planar heating body 5 is sucked by the operation of a syringe 30 and a probe 1 is inserted in the cavity of a living body 31 in such a state that the planar heating body 5 is contracted. At the point of time when the planar heating body 5 is guided to the part directly under a tumor part 32, air is sent into the planar heating body 5 by the syringe 30 to expand said planar heating body 5 and the expanded planar heating body 5 is closely brought into contact with the tumor part 32. Thereafter, a switch 3 is turned ON to supply a current to the planar heating body 5 from a power supply unit 5 through ring electrodes 3, 4. By this method, the planar heating body 5 generates heat and the tumor part 32 is heated to be treated. At this time, the temp. of the tumor part 32 is measured by the thermocouples 18, 19 embedded in a silicone film 17. The measured value is displayed on the display part 34 of the power supply unit 25 to be fed back to a power supply output control part and output is controlled so that the set temp. displayed on temp. setting graduations 35 is possessed by the planar heating body 5.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a thermotherapy device for treating an affected area within a body cavity with heat.

[Prior Art] Conventionally, Japanese Patent Laid-Open No. 61-284246 proposes a warmer for performing thermotherapy. This warmer has a semiconductor heating element disposed within the tip of an elongated probe, and a balloon provided at the tip of the probe.
A fluid was supplied into the balloon, and the semiconductor heating element heated the fluid to obtain a heating effect.

[Problems to be Solved by the Invention] However, in this conventional warmer used for thermotherapy, since the fluid is heated by the heat generated by the semiconductor heating element, the vicinity of the heating element is inevitably heated more intensely, and the inside of the balloon is heated. It was not possible to uniformly heat the entire fluid, and therefore it was not possible to uniformly heat the entire affected area over a wide range at once.

The present invention has been made with attention to these conventional problems, and its purpose is to provide thermal therapy that can uniformly heat the body parts within the body cavity regardless of the heating range. The goal is to provide equipment.

[Means for Solving the Problems and Effects] In order to achieve the above-mentioned problems, the present invention provides a planar heating element made of heat-generating conductive rubber at the tip of the probe, and energizes the planar heating element. The heat generating element is made to generate heat, and this heat generating part is made to generate heat uniformly.

[Embodiment] FIGS. 1 to 3 show a first embodiment of the present invention. FIG. 1 shows the entire system in which the thermotherapy probe 1 of this embodiment is used, and FIG. 2 shows the thermotherapy probe 1.

As shown in FIG. 2, the thermotherapy probe 1 consists of a flexible three-hole tube 2 with a hemispherical tip and closed holes. The ring electrode 3 is fixed. moreover,
At a certain distance from this electrode 3, the outer I
, 14, another ring electrode 4 is fixed. Further, a planar heating element 5 made of flexible heat-generating conductive rubber and formed into a balloon shape is fitted onto the outer periphery of the tip of the three-hole tube 2. Both front and rear ends of the planar heating element 5 are electrically connected to the ring electrodes 3 and 4, respectively. Further, lead wires 6.7 are soldered to the ring electrodes 3.4, respectively, and these lead wires 6, 7 are passed through holes 8, 9 provided on the sides of the three-hole tube 2 into one hole of the three-hole tube 2. It is guided into the tube 10 and pulled out from the end of the three-hole tube 2. Furthermore, a socket 11.12 is attached to the proximal end of each lead 6.7. Furthermore, a communication hole 14 that communicates with an air supply/exhaust hole 13 consisting of another hole of the three-hole tube 2 is provided at a location on the side surface of the three-hole tube 2 that the planar heating element 5 covers. . The air supply/exhaust hole 13 is located at the end of the three-hole tube 2.
It communicates with a tube 15, and a connector 16 with a stopper is attached to the end of the tube 15. Ring electrode 3
．． 4 and the sheet heating element 5 are covered with a silicon coating 17, and the wave film silicon 17 and the sheet heating element 5 are covered with a silicon coating 17.
A number of stages, for example, thermal lightning pairs 18 and 19 are embedded in the upper and lower portions between the two. Each thermocouple 18°19 1 = line 20.
21 is covered with a silicon coating 17. These signal lines 20, 21 are connected to the side of the 3-hole tube 2 at 1;80
At the same time, it is guided into the other hole 22 of the three-hole tube 2 through holes 23 and 24 penetrating through that hole 22. Then, it is pulled out from the end of the three-hole tube 2 and connected to terminals 20a, 20b and 21a, 21b.

As shown in FIG.
and terminals 20a, 20b, 21a, respectively.

21b is a signal input terminal 28a of the power supply unit 25;

Connect to 28b, 29a, and 29b, respectively. Further, a syringe 30 is attached to the connector 16 with a stopper.

By operating the syringe 30 on the thermotherapy probe 1 set as described above, air inside the balloon-shaped planar heating element 5 is sucked, and the planar heating element 5 is contracted. In this state, it is inserted into the cavity of the living body 31. The probe 1 may be inserted alone without observation under X-ray fluoroscopy, or may be inserted through a forceps channel or the like of an endoscope (not shown). As shown in FIG.
When the planar heating element 5 attached to the tip of the syringe 30 is introduced, air is supplied to the inside of the planar heating element 5 to inflate the planar heating element 5 and close it to the tumor part 32.

Thereafter, the switch 33 is turned on to energize the planar heating element 5 from the power supply unit 25 via the ring electrode 3.4. As a result, the planar heating element 5 generates heat, and the tumor 32 is heated and treated. Further, during this heating treatment, the temperature of the tumor 32 is determined by thermocouples 18 and 19 embedded in the silicon wave membrane 17. ΔP1 regular flight is 7h source unit 2
The thermocouples 18 and 19 are displayed on the display section 34 of 5.
The signal is fed back to the power output control section inside the power supply unit 25, and the output is controlled so that the planar heating element 5 maintains the set temperature displayed on the temperature setting [1 level 35].

According to the above configuration, the probe 1 can be easily inserted into the biological cavity by contracting and expanding the planar heating element 5 formed into a balloon shape, and the probe 1 can be easily inserted into the living body cavity. The heating part can be firmly attached and fixed to the affected area. Furthermore, the thermocouples 18 and 19 provided on the surface of the planar heating element 5 provide accurate Al1 determination of the affected area and temperature, and the uniform heat generation of the planar heating element 5 ensures that the entire area to be heated is uniformly heated. It can be heated at a precise temperature. Therefore, even when heating a wide area, it can be heated evenly and uniformly.

4 and 5 show a thermotherapy probe 1 according to a second embodiment of the present invention. This is an endoscope whose main body is composed of an insertion section 36 that is inserted into a living body and an operating section 54 on the hand side.
A ring electrode 38 is fixed to a part of the outer periphery of the tip of the tube 7, and another ring electrode 39 is fixed to the outer periphery of the j+Ik'A tube 37 at a certain distance from this electrode 38. Further, as in the above embodiment, a sheet heating element 40 formed into a balloon shape and made of flexible heat-generating conductive rubber is connected at both ends to ring electrodes 38 and 39, respectively, through current-carrying ports. This planar heating element 40 extends around the outer periphery of the =rh4 pipe section 41 between the ring electrodes 38 and 39. Further, a silicon coating 42 covers the outer surfaces of the ring electrodes 38 and 39 and the planar heating element 40, and a thermocouple 43 is embedded between the silicon coating 42 and the planar heating element 40. . Lead wires 44 and 45 are respectively connected to the ring electrodes 38 and 39 by attaching the shell 1 to the inside of the ring, and each of the lead wires 44 and 45 passes through the flexible tube 37 and connects to the flexible tube 37. tube 3
7 is guided within. Furthermore, the signal line 46 of the thermal lightning pair 43
Along the outer surface of the planar heating element 40, silicon is applied!
142 and is guided into the flexible tube 37 through the portion 47 of the flexible tube 37 covered with the silicon coating 42 through the flexible tube 7. Further, the air supply pipe 48 and the air supply tube 49 form an air supply passageway for supplying air to the space 50 formed by the planar heating element 40 and the flexible tube 37. Lead wires 44, 45 . led into the flexible tube 37 . The signal line 46 and the air supply tube 49 are connected to the image guide fiber 51 within the flexible tube 37. Light guide fiber 52. The forceps channel 53 and the like are inserted up to the proximal operation section 54 and pulled out from the operation section 54.
As in the first embodiment, the lead wires 44 and 45 are connected to the socket 4.
4°45° to the output terminals 26°27 of the power supply unit 25, and the signal 146 to the output terminals 45° through the terminals 4ba, 46b.
The air supply tube 49 is connected to the signal input terminals 28a and 28b, respectively, and the air supply tube 49 is connected to the l
A decimator 30 is connected. In addition, 56 is an eyepiece part, 57 is a light guide cable, and 58 is an operation handle for bending the curved part of the insertion part 36.

The probe 1 of the second embodiment configured as described above is
The system shown in the figure and the known endoscope light source system operate as follows.

First, by operating the syringe 30, air in the space 50 is sucked, the sheet heating element 40 is contracted, and the insertion portion 3
The insertion section 36 is inserted into the living body cavity while observing the inside of the living body cavity through the observation window 58' at the distal end of the body cavity. When the planar heating element 40 attached to the insertion portion 36 is guided directly under the tumor 32 that has occurred on or around the body cavity wall of the living body 31, the first
As in the embodiment described above, the syringe 30 and the power supply unit 25 are made into 1, and the planar heating element 40 is made to generate heat to treat the canker 32 by heating. Further, during the heating treatment, the temperature of the tumor 32 is measured by the thermocouple 43. The signal from the thermocouple 43 is fed back to the power supply control section inside the power supply unit 25, and the output is controlled so that the planar heating element 40 maintains the set temperature indicated by the temperature setting 35.

According to this configuration, the observation function allows the probe 1 to be easily and accurately inserted into a desired position within the body cavity.
The planar heating element 40 can be sufficiently closely identified on the affected area. Furthermore, the temperature of the affected area is accurately measured by the thermoelectric lamp 43 provided on the surface of the planar heating element 40, and the entire area to be heated can be evenly and uniformly heated by the uniform heat generation of the planar heating element 40.

FIG. 6 shows the third implementation-1 of the present invention. The probe 1 of this embodiment has a planar heat-generating rubber 59 formed in a cylindrical shape with a stent (thorns) at its tip, and ring-shaped electrodes 55a and 55b can be energized at the tip and end. It is connected to the. Further, the surface of the sheet heating rubber 59 constituting the sheet heating element 66 is insulated and coated with silicone rubber or the like, and is attached to the tip of the flexible tube 60. Ringden W 55a and 55b
The lead wires 61 and 62 are half 11 inside the ring respectively.
1 is connected so that electricity can be applied. Lead@b
The tubes 63 and 62 pass through the tube 60 and are drawn out from the end of the tube 60, and are fitted with sockets 63 and 64, respectively. Further, a crystal thermometer 65 is embedded within the thickness of the stent-shaped planar exothermic rubber 59.

The sockets 63, 64 of the probe 1 of the third embodiment configured as described above are connected to the output terminals 26, 27 of the power supply unit 25 shown in FIG.

Further, a wire under the guide is passed through the hollow part of the probe 1 and inserted into a body cavity such as a JJIII tube, and a stent-shaped heat generating part 66 is inserted and fixed into the narrowed diseased lumen. After that, turn on the switch 33 of the power supply unit 25 and connect the lead wires 61 and 62 and the ring electrode 55 from the power supply unit 25.
Electricity is applied to the planar heat-generating rubber 59 via a and 55b to cause the planar heat-generating portion 66 to generate heat, thereby performing heating treatment on the affected area. Furthermore, the temperature of the affected area can be determined by the crystal thermometer 65 embedded in the planar heat-generating rubber 59. In other words, temperature can be determined by applying superwaves from outside the body and observing the wavelength of the reflected superwaves.

According to this third embodiment, the heat generating part of the probe 1 is securely fixed to the narrowed affected area, and the heat generated by the planar heat generating rubber 59 and the affected area by the crystal thermometer 65 are fixed. By monitoring the temperature, the affected area can be heated evenly and safely.

7 to 9 show a fourth embodiment of the present invention. The probe 1 of this embodiment has a ring electrode attached to the outer periphery of the tip of a flexible tube 68 whose one end is closed with a hemispherical rubber cap 67. ! 18i69 was identified, and a lead wire 70 for power transmission was passed through the tube 68 inside the six electrodes, and was connected to the six electrodes by the lower end 1 so as to be able to conduct electricity. Further, another ring electrode 71 apart from this ring electrode 1LiIi 69 is fitted onto the outer periphery of the tube 68 so as to be able to slide along its axial direction.
A lead wire 73 is connected to the inside of the tube 68 by soldering through a long hole 72 formed on the side thereof so as to be electrically conductive. These leads 70, 73 are connected to tube 6
8 and is pulled out from the distal end 74 of the tube 68 as shown in FIG.
5.76 are attached to each. Further, both ends of a flexible planar heat-generating rubber 77 formed into a tube shape are fixedly attached to the ring 7u poles 69 and 71 so as to be electrically conductive.
A shape memory spring 78 made of a shape memory resin or an alloy is installed between the planar heat generating rubber 77 and the tube 68, and seven insulating coatings are provided to cover the entire planar heat generating rubber 77. Here, the shape memory spring 78 has a shape memorized so that it expands and contracts in the axial direction and expands and contracts in the radial direction in response to temperature changes.

The thermotherapy probe 1 configured in this way has its sockets 75 and 76 connected to the power supply unit 2 similar to the first embodiment.
By connecting to the output terminals 26 and 27 of 5, respectively, the following effects occur. First, the probe 1 is inserted into the body cavity while the shape memory spring 78 is maintained at a temperature lower than the set temperature and the planar heat-generating rubber 77 is contracted as shown in FIG. This insertion may be performed by the probe alone or endoscopically. Then, when the planar heat generating rubber 77 is guided directly under the affected area, it is passed through the ring electrode 69.71 from the power supply unit 25 through the lead wire 70.73. Due to this energization, the planar heat generating rubber 77 generates heat and the shape memory spring 78 is heated at the same time, and when the set temperature is reached, the eighth
As shown in the figure, the shape memory spring 78 contracts in the axial direction and expands in the radial J direction, thereby expanding the planar heat-generating rubber 77 and bringing it into close contact with the affected area. At this time, as in the first embodiment, the sheet heating rubber 77 and the insulating coating 79
A thermoelectric device χ·l for determining the temperature 11pr may be buried between the two for temperature measurement and temperature control.

According to this configuration, if the shape memory spring 78 is set to be in the state shown in FIG. 7 near body temperature (37° C.) and the state shown in FIG. 8 near 43° C., when the probe 1 is inserted, ,
The diameter of the tip of probe 1 is thin and flexible, making it easy to insert.
During treatment, the heating part expands and is tightly fixed to the affected area, allowing reliable heating treatment. Moreover, since the planar heat-generating rubber 77 uniformly generates heat, the entire region to which the planar heat-generating rubber 77 is in close contact is uniformly heated. Furthermore, by changing the shape of the shape memory spring 78 during heating, it is possible to obtain a shape of the heat generating part that is adapted to the shape of the affected area to some extent, and more efficient heating can be performed.

10 to 115 show a fifth embodiment of the present invention. The probe 1 of this embodiment has a tube 6 whose one end is closed with a rubber cap 67, as in the fourth embodiment.
A ring electrode 69 is fixed to the outer periphery of the tip of the 7tS pole 69, and another ring electrode 71 is fixed at a certain distance from the 7tS pole 69, and a power transmission lead wire 70.7mm is attached inside these electrodes 69.71. Electrification 11 passes through the tube 68
Connected to J-Noh. These lead wires 70, 73 pass through the tube 68 and are led out from the distal end 74, and are each fitted with a socket 75, 76. Ring Den I! ! 1i69.71, both ends of a flexible planar heat-generating rubber 77 formed into a tube shape are fixedly connected to conductive electricity 111, and a balloon 80 is provided to cover the planar heat-generating rubber 77. Furthermore, tube 68
A water supply tube 81 is inserted therein, one end of which passes through the tube 68 and opens into the balloon 80, the other end of which is pulled out from the distal end 74 of the tube 68, and a plugged connector 82 is attached.

The thermotherapy probe 1 configured in this way has its sockets 75 and 76 connected to the power supply unit 2 similar to the first embodiment.
Connect to output terminals 26 and 27 of 5, and plug connector 8.
2 is connected to a water pump (not shown) to enable water to be fed into the balloon 80, which functions as follows. First, the probe 1 is inserted into the body cavity with the balloon 80 deflated, and when the balloon 80 is guided directly to the affected area, water is supplied from the water pump into the balloon 80 through the water supply tube 81 to inflate the balloon 80. and close it to the affected area. In this state, the lead wire 70.73 from the power supply unit 25
By energizing the ring electrode 69.71 through
The planar exothermic rubber 77 generates heat and the water inside the balloon 80 is heated. At this time, a thermocouple is provided inside the balloon 80,
The water temperature within the balloon 80 may also be measured.

According to this configuration, since the entire probe 1 is formed of a flexible member, it is easy to insert the probe 1, and the water inside the balloon 80 is evenly heated during treatment, so the entire balloon 80 is heated. It generates heat and can evenly heat a wide range of affected areas.

[Effects of the Invention] As explained above, in the present invention, by using a flexible planar heat-generating rubber for the heat generating part of the probe, the heat generating part can be firmly attached to the affected area, and it can be applied to a wide range of affected areas. The entire area can be heated evenly.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing the configuration of a system according to a first embodiment of the present invention, FIG. 2 is a side sectional view of the thermotherapy probe, and FIG. 3 is taken along line A-A in FIG. 4 is a side sectional view of the vicinity of the tip of a thermotherapy probe showing a second embodiment of the present invention; FIG. 5 is a side view of the vicinity of the proximal end of the probe; and FIG. FIG. 7 is a side sectional view of the vicinity of the tip of the thermotherapy probe showing the fourth embodiment of the present invention, and FIG. 8 is a side view of the tip of the probe showing the fourth embodiment of the present invention. Side sectional view in expanded state, No. 9
The figure is also a side sectional view near the proximal end of the probe, No. 10
The figure is a side sectional view of the vicinity of the tip of a thermotherapy probe showing the fifth embodiment of the present invention, and FIG. 11 is a side sectional view of the vicinity of the proximal end of the probe. DESCRIPTION OF SYMBOLS 1... Probe, 5... Planar heating element, 25... Power supply unit, 40... Planar heating element, 59... Planar heating rubber, 66... Planar heating element. 77... Planar exothermic rubber. Applicant's representative Patent attorney Atsushi Tsuboi

Claims (1)

[Scope of Claims] A planar heating element made of heat-generating conductive rubber is disposed at the tip of the probe, and an energizing means is provided for energizing the planar heating element to generate heat. Heat treatment device.