JPH0975466A - Applicator for hyperthermia - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an applicator for hyperthermia, allowing easy insertion into a bio-cavity, giving a sufficient cooling effect, and ensuring a desired heat distribution. SOLUTION: Regarding a hyperthermic applicator equipped with an insertion part capable of being inserted in a bio-cavity, the insertion part is made of a spirally formed tube 6, and the spiral tube part is internally provided with a high-frequency electrode 8 for applying heat.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heating treatment applicator which inserts an insertion portion forming a heating portion into a living body cavity to heat a diseased portion generated inside a living body.

[0002]

2. Description of the Related Art There is known a hyper-smear device for heating treatment using an applicator for inserting an affected part such as cancer occurring inside a living body into a living body cavity. This type of applicator for a hyper-samia device is provided with a high frequency electrode in a portion to be inserted into a living body cavity, and the high frequency electrode is arranged in the living body. An example of an applicator used in this type of hyper-smear device is proposed in Japanese Patent Laid-Open No. 174667/1988. This is provided with a cooling balloon formed by being bent in a spiral shape on the back side of an in-vivo electrode arranged in the living body.

On the other hand, the applicator proposed in Japanese Utility Model Laid-Open No. 64-46056 has a shaft (tube) forming an insertion portion thereof, which has a passage for a high frequency power supply line, a passage for a temperature sensor lead wire, a cooling liquid return passage and radiation. A plurality of conduits are formed through the source and the guide wire, and these conduits extend to the tip of the shaft. In addition, the electrode provided on the outer periphery of the shaft member is covered with one balloon. Also,
A radiation source for radiotherapy is inserted into the shaft.

[0004]

In the former conventional example, the cooling balloon is arranged on the back side of the body electrode, and the cooling means is not interposed between the body electrode and the surface of the living body. For this reason, there is a tendency that the cooling effect in the vicinity of the body electrode cannot be sufficiently obtained. Further, it is difficult to attach the body electrode to the surface of the living body, and it is extremely difficult to adjust impedance matching with the electrode. Furthermore, when inserting the in-body electrode into the living body cavity, the living body may be damaged due to the edge of the electrode rubbing against the living body.

In the latter conventional applicator, since the electrode provided on the shaft member is covered with one balloon, the electrode moves freely together with the shaft in the balloon. Therefore, especially when inserting the applicator into a curved lumen or a narrowed concavo-convex cavity, the shaft is positioned eccentrically to the central axis of the balloon, resulting in uneven electrode placement. Become. In addition, the balloon is partially crushed and the reflux of the cooling liquid becomes uneven. For this reason,
There is a possibility that the electrode portion may be biased to one side of the living body surface, the cooling effect may be non-uniform, or the heating distribution may be unfavorably biased, which may hinder the uniform heating of the living body. Further, the radiation source for radiotherapy inserted in the shaft is biased similarly to the electrode, and there is a possibility that a desired dose distribution cannot be obtained.

The present invention has been made in view of the above problems,
It is an object of the present invention to provide a heating treatment applicator which can be easily inserted into a living body cavity, has a sufficient cooling effect, and can reliably obtain a desired heating distribution.

[0007]

According to the present invention, there is provided a heating treatment applicator having an insertion portion which can be inserted into a living body cavity, wherein the insertion portion is formed by spirally forming a tube, and the spiral tube portion is formed. A high-frequency electrode for heating is arranged inside the.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION

<First Embodiment> A first embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a conceptual diagram of the structure of the applicator, FIG. 3 is a side view of the shaft of the applicator, and FIG. 4 is an explanatory diagram showing a situation in which the applicator is actually used.

(Structure) As shown in FIG. 1, a warming treatment applicator 1 has a hand portion 2 shown at the right side portion in FIG.
And a heating unit 3 shown on the left side in FIG. The heating part 3 has a hollow spiral structure as described later, and the hollow part serves as the brachysource applicator insertion passage 4. The central applicator portion 5a of the uterine brachysource applicator 5, which will be described later, is inserted into the brachysource applicator insertion passage 4.

The heating portion 3 has a structure in which a silicon resin pipe tube 6 having a certain degree of hardness is bent in the middle as shown in FIG. 2 (a), and the bent portion is bent as shown in FIG. 2 (b). By arranging it at the tip and making the two end parts parallel to each other and making it a tightly wound state of two threads,
As shown in (c), it has a hollow spiral structure.

At least a temperature sensitive portion 7a of a plurality of temperature sensors 7 is attached to the outer peripheral surface of the heating portion 3 so as to be exposed as shown in FIG. 1 (b). The part of the lead wire 7b of the temperature sensor 7 other than the temperature sensing part 7a is housed inside the heating part 3. In this case, the lead wire 7 of the temperature sensor 7
The part b is provided along the inner surface of the hollow part of the heating part 3,
Alternatively, it is arranged in the wall of the heating unit 3. Further, the lead wire 7b of the temperature sensor 7 may be housed in the piping tube 6. The temperature sensor 7 is composed of, for example, a thermocouple. Further, as the temperature sensor 7, a platinum element temperature sensor,
An optical fiber temperature sensor, a thermistor, or the like can be used.

A high frequency electrode 8 is arranged inside the tube 6. The high frequency electrode 8 has a linear shape and is formed of, for example, a tin-plated copper wire. An aluminum wire or the like may be used instead of the tin-plated copper wire.

In the structure of the hand portion 2, both ends of the tube 6 are extended as they are, or the water supply tube 11 and the drain tube 12 are separately connected by connecting to both ends thereof. A water supply connector 13 is attached to the proximal end of the water supply tube 11, and a drain connector 14 is attached to the proximal end of the drainage tube 12. Then, the cooling water is supplied from the water supply tube 11 to the tube 6 of the heating section 3, and the cooling water is returned from the heating section 3 to the drain tube 12.

One end of the tin-plated copper wire of the high-frequency electrode 8 is taken out from the tube 6 near the root of the heating section 3 and connected to the electrode cable 15. Further, the lead wire 7b of the temperature sensor 7 having the temperature sensitive portion 77a attached to the outer peripheral surface of the heating portion 3 is connected to the temperature sensor cable 16 provided in the proximal portion 2.

The brachytherapy applicator 5 for the uterus includes an applicator portion 5a called a tandem and applicator portions 5b and 5c called ovoids arranged on both sides of the applicator portion 5a at the center thereof. The left and right applicator portions 5b and 5c are the central applicator portion 5a.
It can be pushed to both sides. Each of the applicator portions 5a, 5b, 5b can be supplied with a braid source through the inside thereof to the tip side thereof.

On the other hand, as shown in FIG. 3, an extracorporeal electrode applicator 18 is prepared in the treatment chamber 20 in addition to the heating treatment applicator 1, and an extracorporeal electrode cable 19 is attached to the extracorporeal electrode applicator 18. It is connected. Further, in the treatment room 20, a patient bed 21, an intracavity hypersamia device main body 22, and a brachytherapy device main body 23 are installed.
A brachytherapy device controller 25 for operating the brachytherapy device main body 23 via a radiation shield wall 24 is installed outside the treatment room 20. In addition, in FIG. 3, 26 is a cable tube for a parser that is connected to the applicator 1 for heating treatment, and 27 in FIG. 3, 27 is each applicator portion 5 a of the brachysource applicator 5. 5
It is a small source guide tube connected to b and 5b.

(Operation) An example of use in an actual treatment scene is as follows. When the applicator 1 for warming treatment is used for both heating and irradiation of small rays, it is used in the treatment room 20 which is electromagnetically shielded. In the treatment room 20, the water supply tube 11, the drainage tube 12, and the electrode cable 15 of the warming treatment applicator 1 are connected to the hypersamia device main body 22. The extracorporeal electrode applicator 18 is attached to the body surface of the patient 28, and the extracorporeal electrode cable 19 is also connected to the hypersamia device main body 22. Then, the cooling water is allowed to flow into the tube 6 of the heating unit 3 through the water supply tube 11 and the drainage tube 12 so as to be circulated.

Next, the brachysource applicator 5 is inserted into the brachysource applicator insertion passage 4 of the heating treatment applicator 1. Even the complicated structure in which three applicator portions 5a, 5b, 5c are combined, such as the brachytherapy source applicator 5 for uterus shown in FIG.
The tip portion of a can be inserted into the heating portion 3 of the applicator 1 for hypersamia. Therefore, the warming treatment applicator 1 and the brachytherapy applicator 5 can be simultaneously inserted into the cavity. FIG. 4 shows a case where it is applied to the uterus 31.

If the small source applicator insertion passage 4 into which the central applicator portion 5a of the small source applicator 5 is inserted is much thinner than the small source applicator 5, a silicon tube or the like is inserted into the gap. You may. When the hand portion 2 is inserted into the cavity, it is taken out from the gap of the brachysource applicator 5 and connected to the intracavity hypersamia device body 22.

After insertion into the patient 28, the heating part 3 of the applicator 1 is positioned on the affected part under fluoroscopy, and the brachytherapy device 5 is connected to the brachytherapy device main body 23. Then, heating is started together with the supply of cooling water, and when the temperature is stable, the operator goes out of the treatment room 20. The operator uses the brachytherapy apparatus controller 25 outside the treatment room 20, and from the brachytherapy apparatus main body 23 through the applicator portions 5a, 5b, 5c of the brachysource applicator 5, through the brachylines. The source is delivered to a site located within the body cavity of the patient. That is, the central applicator portion 5a of the brachysource applicator 5 is inserted into the brachysource applicator insertion passage 4 of the heating part 3 of the warming treatment applicator 1, and the other applicator portions 5b, 5c. Since the tip of the brachytherapy is located near the uterus 31, the brachytherapy source is located at the heating section 3 of the heating treatment applicator 1 and a portion in the vicinity thereof. Then, a treatment is performed in which heating by the heating unit 3 and irradiation of small lines from the respective applicator portions 5a, 5b, 5c are used together. The treatment may be performed by using the brachysource applicator 5 of the type that uses only the central applicator portion 5a.

(Effect) In this embodiment, since the water supply / drainage pipe in the heating part 3 of the applicator 1 for warming treatment is composed of a hollow spiral tube, the pipe is less likely to be crushed. As a result, the following effects are obtained. (1) Prevent the applicator central axis from deviating from the central axis in the cavity. Therefore, the center of the high-frequency electrode 8 housed inside the portion of the tube 6 and the brachysource applicator 5 located on the central axis of the heating treatment applicator 1 deviate from the central axis of the cavity. It is possible to eliminate the bias between the heating distribution and the radiation irradiation distribution as a result. (2) The cooling water is prevented from being unevenly perfused in the heating section 3, and the heating distribution is not biased. (3) Compared to the simultaneous combination therapy of hyperthermia and brachytherapy which separately inserts the respective applicators 1 and 5 into the patient, the insertion work is done only once, and the treatment is simple and quick. You can do it.

Furthermore, the present invention has the following effects in such treatment. (4) The operator's exposure to radiation can be prevented by inserting the brachytherapy source into the brachytherapy source applicator 5 by remote control.

(5) It is possible to use various types of brachytherapy equipment and also a brachysource applicator having a complicated structure, and it is possible to perform simultaneous simultaneous use in many facilities. (6) The brachysource applicator insertion passage 4 can be utilized not only for insertion of the brachysource applicator 5 but also for the following treatments, thereby expanding the range of treatment. (a) By inserting an endoscope, the affected area can be observed. (b) By inserting an aspirator, mucus etc. during treatment can be aspirated. (c) Other treatments can be performed at the same time by inserting treatment tools. (d) When applied to the bronchus, the airway can be secured. (e) Even if nothing is inserted, the hyperthermia treatment can be performed without any bias in the heating distribution.

(7) Since the piping by the tube 6 is made spiral at the same time with the water supply side and the drainage side parallel to each other, the structure is simple, its manufacture is easy, and a cheaper applicator is provided. be able to.

(8) Inside the tube 6 for piping or the heating part 3
By arranging the lead portion of the temperature sensor 7 in the wall portion of the temperature sensor 7, the lead wire 7b portion of the temperature sensor 7 does not protrude into the small source applicator insertion passage 4 of the heating portion 3 or the outside of the heating portion 3. Also, the heating unit 3 incorporating the temperature sensor 7
Can be made compact.

<Second Embodiment> A second embodiment of the present invention will be described with reference to FIG. FIG. 5 is a conceptual diagram of the structure of the warming treatment applicator 1 according to the second embodiment.

(Structure) The structure of the applicator 1 for warming treatment is almost the same as that of the first embodiment, but in the present embodiment, in particular, the distal end of the heating part of the applicator 1 is closed and closed. It has a structure in which the end 35 is formed. The closed end 35 has a tip end portion formed in a conical shape. Further, the proximal portion of the electrode cable 15 branches from the proximal portion of the drainage tube 12, and the proximal portion of the temperature sensor cable 16 branches from the proximal portion of the water supply tube 11. Also in this embodiment, a single or a plurality of temperature sensors 7 are provided. Further, only the temperature sensing part 7 is attached to the outer peripheral surface part of the heating part 3, and the part of the lead wire 7b other than the temperature sensing part 7a is housed in the piping tube 6 of the heating part 3, Or heating part 3
Is disposed in the wall portion of the.

(Operation) The operation is the same as that of the first embodiment, but the following operation is further added in this embodiment. In the present embodiment, since the distal end of the brachysource applicator insertion passage 4 is closed, even if the brachysource applicator 5 is pushed with a strong force when it is inserted into the cavity, the tip of the brachysource applicator 5 still has a heating treatment application. It does not jump out from the tip of the data 1.

(Effects) The effects are similar to those of the first embodiment, but the following effects are further added in the present embodiment. Since the distal end of the brachysource applicator insertion passage 4 is closed, the brachysource applicator 5 can be pushed in with a strong force even when the brachysource applicator insertion path 4 is closed, even when it is inserted into an affected area with severe squeezing. Further, since the electrode cable 15 branches from the proximal portion of the drainage tube 12 and the temperature sensor cable 16 branches from the proximal portion of the water supply tube 11, the number of members at the distal end portion of the proximal portion 2 is reduced, and the configuration is compact and compact. It is simple and the workability is improved.

<Third Embodiment> A third embodiment of the present invention will be described with reference to FIG. FIG. 6 is a conceptual diagram of the heating part structure of the applicator for heating treatment.

(Structure) The structure of the heating unit 3 of the applicator 1 for heating treatment is almost the same as that of the first embodiment described above, but is different in the following points. That is, in the present embodiment, the heating section 3 is configured such that the tube 6 forming the heating section 3 is made of a material such as rubber having excellent shrinkability, and the heating section 3 is contractible.

(Operation) The basic operation is the same as that of the first embodiment, but the following operation is further added in this embodiment. In this embodiment, the tube 6 in the heating unit 3 is inflated depending on how the cooling water is circulated,
You can shrink it. FIG. 6 (a) is a contracted normal state, and FIG. 6 (b) is an expanded state. Therefore, when the applicator 1 is inserted into the cavity, the tube 6 is contracted by sucking and drawing out the air and cooling water contained in the tube 6, thereby reducing the outer diameter of the heating section 3. However, the inner diameter of the heating portion 3 does not actively decrease due to the presence of the high frequency electrode 8. However, the heating part 3 may be contracted even to the inner diameter by making the high-frequency electrode 8 flexible. After inserting the heating part 3 into the cavity, the cooling water is filled into the tube 6 to expand the outer diameter of the heating part 3 and bring it into close contact with the affected part.

(Effect) The effect is similar to that of the first embodiment, but the following effect is further added in the present embodiment. Since the outer diameter of the heating unit 3 at the time of insertion can be reduced, the insertion into the cavity can be performed smoothly. Further, by adjusting the pressure of the cooling water, the degree of adhesion of the heating part 3 to the affected part can be changed depending on the state of the affected part.

<Fourth Embodiment> A fourth embodiment of the present invention will be described with reference to FIG. FIG. 7: is a perspective view of the heating part 3 of the applicator 1 for heating treatment which concerns on 4th Embodiment. The heating part 3 of the applicator 1 for heating treatment of this embodiment does not have a brachysource applicator passage. Therefore, the tube 6 can have a small-diameter, closely-wound spiral structure. The action of the portion related to the hyperthermia treatment in the first embodiment can be obtained. In addition, this is an embodiment in which the brachytherapy is not used at the same time, but the perfusate is more evenly heated in the heating unit 3.
Since it is circulated throughout and the axis of the high-frequency electrode 8 coincides with the central axis in the cavity, it is possible to prevent uneven heating distribution.

<Fifth Embodiment> FIGS. 8 and 9 show a fifth embodiment of the present invention. 8 is an external view of the applicator insertion portion according to the present embodiment, and FIG. 9 is a cross-sectional view taken along the line AA in FIG.

(Structure) The applicator insertion portion 40 of the warming treatment applicator 1 of this embodiment is structured as follows. That is, the flexible shaft 41, the high frequency electrode 42 wound around a part of the outer peripheral surface of the shaft 41, and the high frequency electrode 42 wound around the outer circumference of the shaft 41 so as to cover the outer periphery of the high frequency electrode 42. The spiral tube 43 and a temperature sensor 44 attached to the surface of the spiral tube 43 are provided.

The shaft 41 is a porous tube having five small holes as shown in FIG. Shaft 41
The five holes are a cooling liquid supply hole 45, a cooling liquid discharge hole 46, a temperature sensor conducting wire insertion hole 47, a high frequency conducting wire insertion hole 48, and an insertion conduit 49, respectively. Insertion conduit 49
Is centrally located and has an open tip. The holes 45, 46, 47, and 48 other than the insertion conduit 49 are arranged around the insertion conduit 49, and are closed at the tip of the shaft.

The cooling liquid supply hole 45 opens on the side surface of the shaft 41 at a position near the tip of the shaft 41, and one end of the spiral tube 43 is attached to the opening 51.
It communicates with the cooling liquid supply hole 45. On the other hand, the cooling liquid discharge hole 46 is located at a position closer to the distal end than the opening of the hole 45.
1 on the side surface of the spiral tube 4
The other end of 3 is attached and communicates.

Opening 53 of the temperature sensor conducting wire insertion hole 47
Is located on the distal side of the opening 52 of the coolant discharge hole 46 and opens on the side surface of the shaft 41. Temperature sensor 44
The conducting wire portion 54 of the No. 5 passes through the temperature sensor conducting wire insertion hole 47 from the end portion of the applicator (not shown) and the opening 5 of the hole 47.
3 is led out to the outer surface of the spiral tube 43, and is attached to the same surface.

The opening 55 of the high-frequency conductor insertion hole 48 is opened on the side surface of the shaft 41 near the opening 52 of the coolant discharge hole 46. The high-frequency conductor forming the high-frequency electrode 42 at the tip passes through the high-frequency conductor insertion hole 48 from the end of the applicator (not shown), is guided out of the shaft 41 from the opening 55 of the hole 48, and is guided to the outer circumference of the shaft. Wrapped around.

The insertion conduit 49 is open at the tip of the applicator 1 in this example, but may be closed at the tip. (Operation) When inserting the applicator 1 into the living body cavity, the spiral tube 43 is supplied by a cooling liquid supply device (not shown).
The cooling liquid therein is once discharged to contract the spiral tube 43. In this state, the applicator insertion portion 40 is inserted into the living body cavity. At the time of insertion, the position of the applicator insertion portion 40 is confirmed under X-ray fluoroscopy, and the insertion operation is performed while observing the inside of the cavity with the endoscope inserted in the insertion conduit 49. When the applicator 1 is inserted at the desired position, the spiral tube 4
Inject the cooling liquid into 3 to expand the tube 43,
The applicator 1 is positioned and fixed in the cavity.

After this, treatment is performed. That is, the affected area around the high-frequency electrode 42 is heated and treated by supplying a high-frequency current to the high-frequency electrode 42 from a high-frequency oscillator (not shown). At this time, by circulating the cooling liquid into the spiral tube 43, unnecessary heating of the tissue in the vicinity of the high frequency electrode 42 is prevented and impedance matching of the high frequency electrode 42 is facilitated. Further, the temperature of the inner surface of the living body is measured by the temperature sensor 44, and the high frequency output is controlled based on this temperature information to heat the affected area to a constant temperature.

Further, by introducing a radiation source for intracavitary radiotherapy through the insertion conduit 49 during the warming treatment or before and after the warming treatment, the simultaneous combination therapy of the warming treatment and the radiation treatment or immediately before the warming treatment, Immediate combination therapy.
When the radiation source is not introduced, the insertion conduit 49 may be used as a hole for removing dirt in the cavity or as a hole for airway.

When removing the applicator 1 from the living body cavity, the cooling liquid in the spiral tube 43 is discharged by a cooling liquid supply device (not shown), and the applicator insertion section 40 is retracted while the spiral tube is contracted. Remove from the body cavity.

The sites to which the present applicator 1 is applied are digestive system tracts such as esophagus, duodenum, and rectum, pancreas, bile duct, urethra,
Although it is a thin lumen such as a bronchus, a cavity, a gynecological lumen such as a cervix, etc., it can be applied to a wide body cavity such as a stomach or a bladder by changing a shaft shape or a spiral tube diameter.

(Effect) Since the spiral tube which can expand and contract freely covers the high frequency electrode, it can be safely operated without damaging the sensitive inner surface of the cavity when the applicator is inserted into or removed from the cavity or when it is fixed. . Moreover, the pain of the patient at the time of insertion / removal can be reduced.

Since the shaft is arranged in the center of the spiral by the spiral tube, the high frequency electrode wound around the shaft is always located in the center of the lumen, and the cooling liquid recirculates around the high frequency electrode without partially crushing the cooling liquid passage. Is made uniform,
Safe and efficient heating is possible. Similarly, the radiation source introduced into the insertion conduit can be arranged at the center of the lumen like the electrode, so that safe radiation treatment can be performed without unnecessarily eccentric radiation distribution.

The interposition of the spiral tube removes air between the high-frequency electrode and the inner surface of the cavity, and keeps the distance between the electrode and the inner surface of the cavity uniform, which facilitates impedance matching. By inserting an observation means such as an endoscope into the insertion conduit at the time of insertion / removal, it is possible to operate while observing the inside of the cavity, which is safe. <Sixth Embodiment> A sixth embodiment of the present invention will be described with reference to FIG. FIG. 10 shows the appearance of the applicator insertion portion according to this embodiment.

(Structure) The applicator insertion portion 40 of the present embodiment is characterized by a thin and flexible balloon member 61 attached to cover the surface of the spiral tube 43 of the fifth embodiment described above. A plurality of temperature sensors 44 are adhesively fixed to the surface of the. Other configurations are the same as those in the fifth embodiment.

(Operation) The balloon member 61 expands and contracts following the expansion and contraction operation of the spiral tube 43. Other operations are the same as in the fifth embodiment.

(Effects) According to this, the following effects can be obtained in addition to the effects of the fifth embodiment. That is, since the surface of the spiral tube 43 is made smoother by the balloon member 61, the insertability is improved and the adhesion with the lumen surface is also improved. This alleviates the burden on the patient during insertion / removal and facilitates impedance matching adjustment. Further, in manufacturing, the temperature sensor can be easily adhered and fixed.

[Additional Notes] (1) In a heating treatment applicator having an insertion portion that can be inserted into the cavity of a living body, the insertion portion is formed by spirally forming a tube, and An applicator for hyperthermia treatment, characterized in that a high-frequency electrode for heating is arranged inside.

(2) The applicator for hyperthermia treatment according to item 1, wherein the spiral tube portion is configured to expand and contract by supplying and discharging a fluid to and from the tube. (3) The applicator for hyperthermia treatment according to any one of items 1 and 2, wherein the tube forming the spiral tube portion is provided with a unit for supplying and discharging a cooling liquid.

(4) The thermotherapy applicator according to any one of items 1 to 3, wherein the spiral tube portion is formed so as to have a lumen at the center of the inside of the spiral. (5) The applicator for hyperthermia treatment according to any one of items 1 to 4, wherein a high-frequency electrode is inserted through the tube. (6) The thermotherapy applicator according to any one of appendices 1 to 3, wherein a shaft member is provided inside the spiral tube portion, and a high-frequency electrode is provided on the shaft member. (7) The thermotherapy applicator according to item 6, wherein the shaft member is provided with a conduit through which a radiation source can be inserted. (8) The thermotherapy applicator according to item 4, wherein the distal end side of the lumen is closed. (9) The applicator for hyperthermia treatment according to any one of appendices 1 to 8, wherein the outer surface of the spiral tube portion is covered with a balloon. The action of the additional notes is that in the additional notes (1) (3) (5) (6), the high-frequency electrode is always positioned substantially at the center of the spiral inside the spiral tube,
A cooling medium is uniformly supplied around the electrodes. In the notes (2) and (3), the spiral tube is contracted at the time of insertion, and the tube is expanded after completion of insertion (positioning). In Supplementary Notes (4) and (8), the radiation source, the observation means, or the treatment tools are inserted into the lumen at the center of the spiral. In the additional statement (7), the radiation source inserted into the conduit provided on the shaft is positioned substantially at the center of the helix by disposing the shaft member at the center of the helix. Radiation therapy used in combination with heating is easy and a desired dose distribution can be reliably obtained.

[0055]

As described above, according to the applicator for warming treatment of the present invention, it can be safely inserted even in a living body cavity that is curved or uneven, and a sufficient cooling effect can be obtained.
Since the desired heating distribution can be obtained, safe and reliable heating treatment can be performed. Further, since it can be easily used in combination with radiation therapy and a desired dose distribution can be obtained in the same manner as the heating distribution, it is possible to reliably carry out combination therapy having a high therapeutic effect.

[Brief description of drawings]

FIG. 1 is an explanatory view schematically showing the structure of an applicator according to a first embodiment of the present invention.

FIG. 2 is an explanatory diagram showing a manufacturing procedure of a tube portion for piping of the applicator.

FIG. 3 is an explanatory view showing a treatment scene by the applicator.

FIG. 4 is an explanatory view showing a situation in which the applicator is actually used.

FIG. 5 is a perspective view showing an applicator structure for heating treatment according to a second embodiment of the present invention.

FIG. 6 is a conceptual diagram of a heating unit structure of an applicator for heating treatment according to a third embodiment of the present invention.

FIG. 7 is a perspective view of a heating unit of the applicator for heating treatment according to the fourth embodiment of the present invention.

FIG. 8 is an external view of a heating treatment applicator insertion portion according to a fifth embodiment of the present invention.

FIG. 9 is a sectional view taken along the line AA in FIG.

FIG. 10 is an external view of an applicator insertion portion according to a sixth embodiment of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Applicator for warming treatment, 2 ... Hand part, 3 ... Heating part, 4 ... Small source applicator insertion passage, 5 ... Small source applicator for uterus, 6 ... Piping tube, 7 ... Temperature sensor , 8 ... High frequency electrode, 11 ... Water supply tube, 12 ... Drainage tube, 13 ... Water absorption connector, 14 ... Drainage connector,
15 ... Electrode cable, 16 ... Temperature sensor cable, 40
... Applicator insertion part, 41 ... Shaft, 42 ... High frequency electrode, 43 ... Spiral tube, 44 ... Temperature sensor, 45
... Coolant supply hole, 46 ... Coolant discharge hole, 47 ... Temperature sensor conductor insertion hole, 48 ... High-frequency conductor insertion hole, 49
... Insertion conduit, 61 ... Balloon member.

Claims (1)

[Claims] 1. A heating treatment applicator having an insertion portion that can be inserted into a cavity of a living body, wherein the insertion portion is formed by spirally forming a tube, and heating is performed inside the spiral tube portion. An applicator for warming treatment, characterized in that a high-frequency electrode for medical use is arranged.