JPS62292173A - Apparatus for internally heating body - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

Detailed Description of the Invention 3. Detailed Description of the Invention [Field of Industrial Application] The present invention is an internal heating device equipped with a hollow heating element that heats and treats an affected area by irradiating electrical energy from the outside. Regarding equipment.

[Conventional technology] Conventionally, cancer cells etc. are more sensitive to heat than normal cells, so
A high-frequency treatment method is known that utilizes this feature to destroy and treat malignant tumors such as cancer by heating the affected area.

In the conventional high frequency treatment method, for example, Japanese Patent Application Laid-Open No. 59-1350
As disclosed in No. 67, a conductive material such as a metal needle is placed at a target heated (to be treated) site such as an affected area in a living body, and the heated site is sandwiched between a pair of opposing electrodes. A high frequency current is passed between the two electrodes by a high frequency power source.
By doing so, the electric field is concentrated on the metal needle, and the area near the metal needle is locally heated.

[Problems to be Solved by the Invention] In the conventional example described above, it is necessary to perform a surgical operation to install and remove the metal needle, which increases the burden on the patient. In addition, it was often impossible to perform this procedure on patients who were debilitated.

Furthermore, with the above-mentioned heating treatment alone, for bile duct obstruction, the internal pressure within the bile duct increases before the therapeutic effect increases.
If the fluid was not drained, death would be accelerated.

Further, Japanese Utility Model Application Publication No. 59-69716 discloses a hollow tubular heater for cancer treatment. This conventional example requires a lead wire for heating, which causes discomfort to the patient. Further, there is a drawback that the lead wire gets in the way when eating or the like.

The present invention has been made in view of the above-mentioned points, and is an internal warming device that can be installed and indwelled without causing great pain to the patient, can also be drained, and can perform warming treatment that can be applied to a wide range of times. The purpose is to provide equipment.

Means and Effects for Solving Problem E 1 In the present invention, by providing a hollow tubular heating element that efficiently generates heat by irradiating electrical energy from outside the body,
■It can also be applied to cold bamboo diseases, making it possible to treat the affected area by heating.

[Example] Hereinafter, the present invention will be specifically described with reference to the drawings.

1 and 2 relate to a first embodiment of the present invention, FIG. 1 shows a schematic configuration of the first embodiment, and FIG. 2 shows an example of use of the first embodiment.

As shown in FIG. 1, the internal warming device 1 of the first embodiment includes a substantially cylindrical tube-shaped heating element 3 that is placed in a region to be heated and treated inside a living body 2; A pair of electrodes 4A, 4B arranged opposite to each other on the outer surface of the living body 2, and a high frequency power source 5 in which a high frequency current is passed between the electrodes 4A, 4B via lead wires connected to these electrodes 4Δ, /IB. configured.

The heating element 3 is made of vinyl chloride, polyurethane, nylon,
4 The duplex-shaped heating element 3 is formed into a flexible tube shape using propylene, polyethylene, etc.
The metal powder 6 is kneaded into the metal powder 6 to have higher conductivity than the biological tissue 2 at high frequencies and to increase loss.

Furthermore, this tube-shaped heating element 3 has flaps 7.7. so as to prevent it from easily falling off from the stenosis when it is placed in the stenosis.
. . , 7 are formed near both ends of the duplex.

This first embodiment can be sufficiently used even in a narrowed area, and the situation when heating a narrowed part of a bile duct, for example, is performed will be described below with reference to FIG. 2.

A duodenal papilla 12 opens in the middle of the duodenal limb 11, and a bile duct 13 and a pancreatic duct 14 are connected to the duodenal papilla 12.
are connected. It is assumed that this bile duct 13 has a stricture 15 due to a tumor such as cancer.

For this stricture 15, a flexible sheath is inserted into the channel of the endoscope, and the distal end side of the sheath is inserted into the bile duct 13.
The device is installed so as to spread out the narrowed portion 15 that has occurred. When installing this sheath, as disclosed in, for example, Japanese Patent Laid-Open No. 60-227771 filed by the present applicant, a basket forceps-like expanding member is inserted into the sheath and the narrowed portion 15 is pushed and expanded. can be installed. Then, the tubular heating element 3 is placed around the outer periphery of the proximal end of this sheath, and the rear end of this heating element 3 is pushed with a pusher tube to set the heating element in the constricted part 15, and then the inner sheath is removed. Then, the heating element 3 can be placed in the constricted portion 15 as shown in FIG. Since flaps 7.7° .

Once the heating element 3 is set as shown in Fig. 2 above, the electrodes 4A and 4B are closely attached to opposing parts of the body surface surrounding the position of the heating element 3, and the power switch of the V1 high frequency power source 5 is turned on. A current is passed between both electrodes 4A and 4B. The electric field when this high-frequency current flows is concentrated at the metal powder 6 of the conductive material, and the loss at this concentrated portion is greater than the biological tissue, and is converted into heat, causing the entire heating element 3 to generate heat. Stricture part 1
The area around B can be heated. In this way, the affected area of a tumor such as cancer can be heated and thermotherapy can be performed.

Note that the heating temperature can be easily controlled by adjusting the output amount of high-frequency current that does not flow through the living body 2. In addition, since the heating element 3 is in the form of an indwelling tube, it can be used even for patients who have bile duct obstruction due to tumors such as cancer.
The affected area can be treated with heat therapy. In other words, since the heating element 3 having a hollow passage provided in the indwelling tube is used, even if conventionally death would result from an increase in biliary pressure due to heat, fluid can be drained or evacuated through the hollow passage. It can prevent the rise. In other words, it can be cured by thermotherapy treatment while also functioning to prolong life.

Further, since the heating element 3 can be inserted orally using an endoscope or the like, treatment can be performed without surgical operation, and the patient's pain can be reduced. Furthermore, even elderly people whose physical strength has decreased to such an extent that they cannot withstand surgery can be treated using the first embodiment since no surgical operation is required. Furthermore, the bulb-shaped heating element 3 has a structure that allows it to be implanted inside the body and physiologically discharge bile, etc., so it does not have a structure in which a part of the chicope is exposed outside the body, and it can lead a life similar to that of a healthy person and be able to socialize. You can also return.

Furthermore, since the heating element 3 is provided with flaps 7, .
It is possible to reliably prevent it from falling out. Therefore, it can be placed in an optimal position. Further, since the dicove-shaped heating element 3 is flexible, the running state of the bile duct 13 does not change significantly even if the heating element 3 is placed in place, and it is anatomically safe.

FIG. 3 shows a heating element 21 in a second embodiment of the invention.

This heating element 21 is made of the above-mentioned vinyl chloride, etc., and has flaps 7,...
・, 7 is formed into an almost cylindrical tube shape.

A metal pipe (or metal coil) 22 is fitted onto the inner peripheral surface of the hollow passage of this heating element 21.

This heating element 21 has almost the same effect as that of the first embodiment.

Incidentally, instead of the metal pipe 22, a heating element 25 coated with metal as shown in FIG. 4 may be used. This heating element 25 is a flexible drainage tube 26 provided with a metal coating 27 around the center thereof.

FIG. 5 shows a heating element 31 used in a third embodiment of the present invention.

This heating element 31 is the heating element 21 shown in FIG.
Instead of using the metal pipe 22, a metal ring 32 is fitted onto the outside. As shown in the sectional view of FIG. 6, this metal pipe 32 is shaped like a C-ring and is easily attached to the outer periphery.

Incidentally, the heating element itself may be formed of a metal pipe.

In addition, in the above usage example, the case was explained for the bile duct, but
The present invention can also be applied to other organ parts such as the ureter. For example, as another example of use, as shown in FIG.
can also be used for the esophagus 41. When used in the esophagus 41, it serves to discharge food into the lower digestive tract instead of draining bile and other fluids through the biliary tract.

It should be noted that the heating element is not limited to one using metal powder 6 or metal pipe 22, but can be used as long as it has a higher high frequency loss than living tissue with respect to the high frequency applied with electricity.

FIG. 8 shows a schematic configuration of a fourth embodiment of the present invention.

In this fourth embodiment, a flexible material such as vinyl chloride, etc.
Power is supplied to a heating element 52 formed by mixing ferromagnetic powder 51, a magnetic field generator 54 disposed near the body surface 1ii53 around the heating element 52, and the magnetic field generator 54. It consists of a power source 55.

The heating element 52 has a flap 7, similar to each of the above embodiments.
..., 7 is provided.

In this fourth embodiment, an alternating magnetic field is generated by a magnetic field generator 54 such as an electromagnet, and this alternating magnetic field is concentrated on a heating element 52 in which ferromagnetic powder 51 is mixed.

Further, the ferromagnetic powder 51 of the heating element 52 is made of a material that has a large loss with respect to the alternating magnetic field or is used at a frequency that causes a large loss. Therefore, heat is exchanged in this heating element 52, and the entire heating element 52 is heated.

In this fourth embodiment, the magnetic field generator 54 is not necessarily connected to the body surface 54.
3, it is not necessary to place the patient in close contact with the patient, so heating can be performed without causing discomfort to the patient. In other words, the magnetic field generator can be placed on the outside of clothing. Another advantage is that the magnetic field generator 54 is set under the bed on which the patient lies or on the bed itself, and heating treatment can be performed without the need for the magnetic pole surface of the magnetic field generator 54 to come into direct contact with the patient's body surface. Incidentally, as an example of use, it can be applied to bile ducts, etc., as in the first embodiment.

FIG. 9 shows a fifth embodiment of the invention.

In this fifth embodiment, a pair of magnetic field generators 61, 61 surround the heating element 52 and are disposed facing each other, either in contact with the body surface 53 or at a distance.

The pair of magnetic field generators 61 and 61 may be an integrated magnetic field generator 711' as shown in FIG. 10.

The oscillator and temperature sensor integrated into the heating element are integrated and set at the target site, and the modulation degree and oscillation frequency of the oscillator are changed depending on the temperature detected by this temperature sensor, and the oscillation output of this oscillator is transmitted to a receiver outside the body. The temperature of the heating treatment may be monitored by receiving the information from the user.

Further, the output of the power source can be controlled based on the received and detected temperature to automatically control the temperature of the heat during thermotherapy to be constant. Further, it is also possible to control the change over time of the heating temperature of the heating treatment to follow a desired professional wrestling.

By performing the above-mentioned automatic control, it is possible to cope with the case where the amount of heat generated by the heating element changes, such as when the patient moves.

Furthermore, by accumulating treatment data, it is possible to perform thermal treatment using an optimal process.

Note that, as in the seventh embodiment of the present invention shown in FIG. 11, there is a structure in which electromagnetic waves such as microwaves are emitted from an electromagnetic wave generator 81 toward a heating element 82 inside the body without requiring a pair of electrodes. I can also learn what to do.

In this case, as the heating element 82, it is sufficient to use a material having a higher loss than the living tissue for microphone waves and the like.

Further, the heating element 82 is not limited to a tube-shaped one, but may be a C-ring-shaped one as shown in the figure. If a C-ring-shaped member is used in this way, it can be easily expelled from the body by wrapping it around the body during removal. Incidentally, electromagnetic waves such as microwaves can be easily generated using a Gunn diode or the like which can be generated by a battery or the like, and the generated electromagnetic waves are emitted from the opening of the horn 83.

This seventh embodiment is suitable for portable use.

[Advantageous Effects of the Invention 1] As described above, according to the present invention, a heating element is provided with a hollow passage through which body fluids can pass, can be installed at a target site, and is humidified by C humidification by applying electricity from outside the body. Because of this, thermal treatment is possible even in areas where obstructive diseases such as stenosis are likely to occur
Giru. Additionally, heat treatment can be performed without causing significant pain to the focal area.

[Brief explanation of the drawing]

1 and 2 relate to the first embodiment of the present invention, FIG. 1 is a schematic configuration diagram of the first embodiment, FIG. 2 is an explanatory diagram showing an example of use of the first embodiment, and FIG. 3 4 is a perspective view showing a heating element used in the second embodiment of the present invention, FIG. 4 is a sectional view showing a modification of the heating element shown in FIG. 3, and FIG. 5 is a heating element according to the third embodiment of the invention. 6 is a sectional view of FIG. 5, FIG. 7 is an explanatory diagram showing another example of use of the present invention, and FIG. 8 is a schematic configuration diagram of a fourth embodiment of the present invention. 9 is a schematic configuration diagram of a fifth embodiment of the present invention, FIG. 10 is a plan view showing a magnetic field generator in a sixth embodiment of the present invention, and FIG. 11 is a configuration diagram showing a seventh embodiment of the present invention. It is. 1... Inside the body 12'lA position 2... Living body 3...
Heating element 4A, 4B... Electrode 5... High frequency power supply 6... Metal powder 7... Flap 1
3...Bile duct 15...Stricture part 8 Figure 9 Figure 10

Claims (1)

[Claims] An in-vivo body characterized by comprising a high-frequency power source that generates high-frequency power, at least two electrodes through which the high-frequency power is passed through the body, and a conductive hollow heating element that is placed inside the body and concentrates an electric field. Warm device.