JPS622955A - Applicator for warming medical treatment - 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]

[Industrial Application Field] The present invention relates to an applicator for heating therapy, and more particularly to an applicator for heating therapy that uses electromagnetic waves to heat a predetermined location of a living body. [Conventional technology] In recent years, heating therapy

Treatment methods using [-hyperthermia 1] have been in the spotlight, especially in which malignant tumors are continuously heated at around 43°C for 1 to 2 hours, and this is repeated at regular intervals. Research reports have been made one after another that it is possible to inhibit the regenerative function of cancer cells and at the same time kill many of them (4 Measurement and Control νoi, 22. No. 10). This type of heating therapy includes a general heating method and a local heating method. Among these, methods using electromagnetic waves, methods using electromagnetic induction, methods using ultrasonic waves, etc. have been proposed as local heating methods for selectively heating only the cancer tissue and its surroundings. On the other hand, the inventors have been conducting extensive research on the effectiveness of using electromagnetic waves to treat cancers deep within the body rather than at the surface of the body. In this case, especially regarding the heating applicator for sending electromagnetic waves into the living body,
The inventors have traditionally adopted a method of equipping the device with a radio wave lens due to the need to focus the energy of electromagnetic waves. Specifically, as shown in FIG.
The main parts are a case body 3 that functions as a waveguide, an electromagnetic wave power supply part 2 provided in one end of this case main body 3, and a radio wave lens part 4 provided in the other end. The output stage of this radio wave lens section 4 is equipped with a cooling plate 5 to prevent surface overheating of the living body (Mj).
At the same time, the cooling plate 5 can be cooled by cooling water W. [Problems to be Solved by the Invention] However, in such a conventional example, the energy loss of electromagnetic waves inside the applicator 1 is relatively large. It has already been proposed (Japanese Patent Application No. 59-8692) to fill the applicator with an oil that has less attenuation.On the other hand, this oil-filled applicator can also be used to clean the surface of the living body and the radio wave lens that is installed as needed. Problems such as mismatching with the electromagnetic wave transmission system and heat loss due to impedance in the entire electromagnetic wave transmission system occur, making it impossible to completely suppress the loss of electromagnetic wave energy. In this case, the applicator is heated, and the oil expands, causing the oil seal 41 disposed in the radio wave propagation path inside the case body to expand.
(cut + iQ)) There are inconveniences such as tl and 2nd. In addition, the filling oil must be replaced at regular intervals due to thermal deformation and deterioration due to long-term continuous use, which affects the δ and N decay of electromagnetic waves. 4) I have a cow. [Title aspect of the invention] The present invention improves the disadvantages of the conventional example, and in particular, even if the filled oil undergoes thermal expansion due to continuous use, it easily absorbs this and does not adversely affect the oil storage partition or other members. It is an object of the present invention to provide an applicator for heating therapy that does not cause di-l long-lasting effects. [Means for Solving the Problems] Therefore, in the present invention, a case body is provided which has an electromagnetic wave feeding section at one end and an electromagnetic wave emitting end at the other end, and the The electromagnetic wave power feeding part is filled with an insulating oil that has low electromagnetic wave attenuation, a plurality of small holes are provided in a part of the inner wall of the electromagnetic wave power feeding part, and the insulating oil is required outside of the plurality of small holes. In order to achieve the above object, the present invention adopts a configuration in which a fluid guide means is provided to allow fluid to flow out to or flow into the case body in accordance with the above. [Function] When the applicator is used continuously for a long time, the case body and the filled oil are heated due to loss of electromagnetic energy within the applicator, causing thermal expansion of the filled oil. In this case, in the present invention, the increased amount of the filled oil due to thermal expansion is transferred through a plurality of small holes formed in a part of the inner wall of the electromagnetic wave power supply part, and at the same time, a fluid guide means is provided continuously outside the small holes. This eliminates inconveniences such as generation of abnormal internal pressure within the case body and damage to the oil-filled partition plate. On the other hand, this fluid guide has a dual function in that it can be used as is even when replacing the filled oil. [Embodiment of the Invention] Hereinafter, an embodiment of the present invention will be described based on FIGS. 1 to 7 and 12. First, in FIG. 1, the main body of the case including the functions of the 104:1 waveguide and L7 is not shown. This nonose A, body 10
As is clear from Figures 2 and 3, it forms a box shape, and the electromagnetic wave feed '? A radio wave lens part 12 is provided at the other end, and a stub 1 for electromagnetic wave matching, and a ner mechanism 1 are provided in the middle part.
3 is equipped. Furthermore, the electromagnetic wave emitting end 14 is formed by opening the electromagnetic wave emitting end 14 in the portion shown in FIG. !+1+1 A cooling mechanism 15 for cooling the biological surface is provided so as to cover the magnetic electromagnetic wave radiation end 4 from the outside. Wave tube 1. O, A, and this power supply part 3i wave tube 10
It is formed by an excitation antenna IIA protruding from the center of A, and a waterproof coaxial connector 1.1B for electromagnetic waves connected to this excitation antenna IIA. As a result, the electromagnetic waves sent through the coaxial connector IIB are effectively introduced into the case body 10.The stub and nerve mechanism Insulating oil with low attenuation of electromagnetic waves (hereinafter referred to as oil 1 for j1'4), OC
is filled. 1.0D means the oil IOC is 1
．． This shows an oil-filled partition plate made of a dielectric material +; A stub tuner mechanism is used.To explain this in more detail, each of these stub tuners 15A, 13B and 13c includes a cylinder portion 21 with one end open, and a waterproof type that moves back and forth within the cylinder portion 21. a piston member 22, a threaded member 23 integrated into this piston member 22 and equipped with a four-stub connection function, a threaded hole 24 into which this threaded portion +A'23 is threadedly inserted; The inside of the case body 10 and the inside of the cylinder part 21 are connected to each other, and two or more VJ holes 25 are arranged in an L shape, and by rotating each threaded part 4, 1' 23, the corresponding threaded part A '23 is appropriately protruded into the game scale 10 to achieve necessary alignment.In this case, the communication through hole 25, the piston member 22
The flow I for the movement of the oil IOC that occurs due to the reciprocation of the oil IOC is shown. In addition, in order to smooth the flow of the oil 1.0 C, that is, the reciprocating movement of the piston part +4'22, and to allow thermal expansion of the filled oil due to overheating of the case body caused by continuous use, the above-mentioned Power feeding section waveguide 10
A part of A is provided with an oil escape machine f1!116. In this embodiment, the oil escape mechanism 16 includes through holes 16A, 16A formed at two locations in the power supply waveguide +OA at a predetermined interval, and covers each of the through holes 16A from the inside. Fine gold 4M with comparative songs arranged and equipped
16B and each of the through-holes] the guide tube 16 connected to 6A;
C, 1, 6C, and a relatively soft oil escape tube 1 connected to each guide pipe 1 fi C and extending upward.
It is composed of 6D and 16D. 6 C and tube 16D make Wf
A body guide means is formed. Here, the gold 8 and 1
16B constitutes a part of the side wall of the electromagnetic wave power supply section 11, so if it functions equivalently to this,
For example, a plurality of small holes may be provided directly on the inner wall of the electromagnetic wave power supply section 11, or a plate-like metal member having countless l'j 1ffi small holes may be used instead. In addition, the cooling mechanism 15 installed at the electromagnetic radiation end 14 of the case body 10 is formed into a flat shape in order to efficiently cool the surface of the heating section. The mechanism 15 includes an attachment board 30 that is integrally fixed to the case body 10, and a rectangular coolant inlet 3 formed at one end of the attachment board 30.
08, a correspondingly rectangular coolant outlet 30B formed at the other end of the anchoring board 30, each of these coolant inflow/outlet ports 3OA and 30B, and the electromagnetic radiation r(・1 Opening 1-:'I l of the end 14
A coolant guide 3132 is connected and fixed to each of the coolant inflow r130A and coolant outflow 30B of C, 1 and C), and covers substantially the entire surface of the electromagnetic wave emitting end 14. a flat insulating film member 33 disposed in the form of 1), and a frame plate 3 to which the insulating film member 33 is removably attached to the attachment base +ri 30 with its surroundings waterproofed.
4. Among these, the insulating film member 3
3. It has a dish shape with a convex shape on the outside and an opening on the inside, and is made of a fill-shaped dielectric material that has little attenuation of electromagnetic waves. The cooling water flowing in from the cooling liquid inflow D3OA flows inside the insulating film member 33 and is sent out to the cooling liquid outflow [-150B] as shown by the arrow f in FIG. $4' The biological surface is efficiently cooled through the 33 to obtain 2. In this embodiment, the radio wave lens section 12 installed at the right end of the case body 10 in FIG.
As shown in the figure, it is formed into a box shape with two opposing sides open, and the entire box is housed in the case body 1o in a detachable manner. , the radio wave lens section 12 includes a plurality of metal plates 40, 40, . As shown in FIG. The dimensional width of α1.α2.α, which is set to become smaller as it approaches (according to) 4IΔ (however, α0>α,>α2>α3), is arranged from
As a result, each metal plate 40 as a whole is designed to exhibit a predetermined I-Men's effect in one direction with respect to incoming electromagnetic waves, as shown by the dotted line in FIG. Also, 11J
Each of the metal plates 40 has a shape in which the center of the Q angle jM part of the first side (electromagnetic wave feeding part) is cut out in an arch shape, so that the same S:11 incoming θl wave as described above J: '> 1. It is set to 2 (t) in the +!! direction so that a predetermined lens effect can be exerted. Figure 11 shows the radio waves 1.・In the case of case body 10, when the lens part 12 is housed in the case body 10, the side view of the line 13 is shown in Figure 1 (with the insulating film part +433 removed).
Radio wave 1.・The electromagnetic wave input side and the electromagnetic wave number η, l, Ij, and Ij are both open and dirty, as mentioned above, and the coolant in the cooling mechanism I5 is extremely low. It has a structure that allows it to easily flow into and out of the radio wave lens section. Further, in FIG. 1, reference numeral 42 indicates an I17 female thread for locking the radio wave lens portion 12. Then, as described above, the box-shaped radio wave lens part 12 is detachably formed.
Actually, several tens of ijF&@ are prepared in advance according to the tJ bending part, and they can be selected and used as appropriate. Furthermore, the electromagnetic wave power supply section ll of the radio wave lens section 12
On your side! :11, i! to the cooling liquid guide 32 for the cooling jll'+ liquid outflow! l! A piping 39 with a relatively small diameter is used as a means for removing the air bubbles that have been absorbed during the treatment, and the air bubbles that are discharged during the treatment are directly discharged from the coolant pipe 132 to the outside by the negative pressure caused by the sudden movement of the coolant. Then, ζ, addition to this embodiment formed in this way, the applicator 5o for the A therapy, the supporting members 10G on both sides, and the loIT part. As shown in FIG. 12, the arrow C,
It is held so that it can be rotated up and down as shown in D. This applicator holding means 51 is supported by a support mechanism (not shown) and is configured to be rotatable as shown by arrows E and F.
It is possible to take any posture that suits the heating section. Next, the overall operation of the above embodiment will be explained. First, the electromagnetic waves inputted via the coaxial connector 11B and outputted from the excitation antenna IIA into the case body 1o are sent as they are to the radio wave lens section 12 without being attenuated in the OC. Then, in the process of propagating through this radio wave lens section 12, the phase of the outer part advances from that of the central part, so that a lens effect is applied to the electromagnetic wave at the time it is emitted from the radio wave lens section 12, causing radiation and focusing. are done at the same time. The electric weight ψ with this lens effect propagates through the cooling mechanism 15 at 1 m L,
The light is propagated from the surface to the living body, but for a moment or two, it is partially reflected on the surface of the object, and then enters the heating of the surface and deep part of the 4F body. In this case, /J integral surface is iti+
It is effectively cooled by the cooling mechanism 15 described above. In addition, in the deep part, since the radiation is focused by the lens effect in all directions by the radio wave lens, the focal position at a predetermined depth and its surroundings can be efficiently heated. On the other hand, the reflected wave on the surface of the living body is due to a difference in impedance of the electromagnetic wave transmission system, and such an impedance change also occurs on the input side of the radio wave lens section 12. Therefore, when viewed from the excitation antenna 11A side, it is possible to detect the reflection of electromagnetic waves from both the aforementioned radio wave I/lens section 12 and the surface of the heating section. In this case, by adjusting the stub tuner mechanism 13 to the jm value, it is possible to immediately obtain the above-mentioned impedance to the radio wave lens section 12 and the heating section side, thereby reducing the electrical resistance. Since the generation of waves is suppressed, electromagnetic energy is efficiently sent into the heating section. Here, the impedance matching by the stabilization mechanism 13 specifically determines the reflection rate displayed on the reflected electromagnetic wave display means (not shown) of the directional coupler connected to the coaxial connector 1113. i. It should be carried out by the operator while calling. Apart from the impedance matching by the stabilizing mechanism 13, a small amount of energy is generated in the case body 10 due to the impedance of the electromagnetic wave transmission system, and this causes the case body 10 and the filled oil to be generated by continuous use of the applicator. Constant heating of 10C causes thermal expansion of the filled oil 10G, which poses a problem as a countermeasure. In this case, if left unattended, for example, the oil-filled partition plate 1 and OD will be damaged, but the oil escape mechanism IEi mentioned above will act against this, and the filled oil that has increased due to thermal expansion will be removed. ζ is designed so that the increased amount of IOC can be easily sent to the outside. , - oil speed changer 41
On the other hand, t16 also has the function of being able to be used as is when replacing the filled oil 10C. In addition, since the radio wave lens part 12 has a structure that can be replaced very easily, it is efficient to select and use the radio wave lens part 12 with a convergence degree of ¥4 corresponding to the deep position 6,2. Add! l! l therapy can be performed. For this reason, in this example, tri, different 7';
II' Preparation work can be carried out at high speed, and the heating time can be set sufficiently.
There is an advantage that the entire device can be obtained relatively inexpensively because there is no need to prepare many applicators. Furthermore, in this embodiment, since the metal plates 40 forming the radio wave section 12 are of the same shape, the overall size including the frame 41 can be reduced, that is, the size of the applicator as a whole can be reduced. ■It also has the advantage of being a Noh play. In addition, although the above-mentioned implementation example is particularly about an applicator for old deep force products, the present invention is not necessarily limited to this. For example, by reducing the output energy by 1" and removing the cooling mechanism 15, The present invention can also be applied to applicators for heating the surface. In addition, in the main rudder embodiment, the oil escape mechanism 16 is installed in two places (rM), but it may be installed in one place. [Effects of the Invention] The present invention is configured as follows. Accordingly, even if the filled oil expands thermally, the increased amount can be effectively accommodated and sent to the outside, thus eliminating the inconvenience of damage to the members inside the case body due to internal pressure. Replacing the filled oil is also extremely easy.
An excellent long-lasting applicator for heating therapy can be provided.

[Brief explanation of the drawing]

Fig. 1 is a sectional view including a coolant guide showing an embodiment of the present invention, Fig. 2 is a right side view of Fig. 1, Fig. 3 is a plan view of Fig. 1, and Figs. 5 is a perspective view showing the radio wave lens section used in FIG. 1, FIG. 6 is a front view of the radio wave lens section viewed from the arrow ■ in FIG.
Figure 8 is a cross-sectional view along the ■-■ cotton in the figure, and ■-X in Figure 7.
A cross-sectional view along Nif, FIGS. 9 and 10 are explanatory diagrams showing the focusing state of electromagnetic waves, FIG. 11 is a right side view when the insulation 11Q member is removed in FIG. 1, and FIG. Figure 1 is a perspective view showing the J-contact state; Figure 13 is a perspective view showing a conventional example. 10... Case body, IOC... Oil as insulating oil, 11・・・・・・Electromagnetic wave power supply part, 1
4... Electromagnetic wave radiation end, 16B... Wire mesh forming small hole, 16C... Fluid guide 1'
Guy U tube that forms part of the means. Patent applicant Makoto Kikuchi (Yu (3 people))
Hibiki-n V /') Ka- Figure 6 Figure 7 Figure β f2 ■Ko Figure 10 1/time, 30B Figure 12 ″″′-〆V・, Month f /, /2 \ ,-～- ＼-N

Claims (1)

[Claims] (1) A case body is provided which has an electromagnetic wave power supply section at one end and an electromagnetic wave radiation end at the other end edge, and an insulating oil with low electromagnetic wave attenuation is applied to the electromagnetic wave power supply section inside the case body. A plurality of small holes are provided in a part of the inner wall of the electromagnetic wave power supply section, and the insulating oil flows out into the case body or into the case body as necessary outside of the plurality of small holes. An applicator for heating therapy, characterized in that it is equipped with fluid guide means for allowing inflow.