CN100542629C - Horizontal electric field RF heat therapy equipment - Google Patents
Horizontal electric field RF heat therapy equipment Download PDFInfo
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- CN100542629C CN100542629C CNB2006101616849A CN200610161684A CN100542629C CN 100542629 C CN100542629 C CN 100542629C CN B2006101616849 A CNB2006101616849 A CN B2006101616849A CN 200610161684 A CN200610161684 A CN 200610161684A CN 100542629 C CN100542629 C CN 100542629C
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Abstract
The invention discloses a kind of horizontal electric field RF heat therapy equipment, it comprises radio frequency power source, power feed circuit, loop and a resonator cavity, radio frequency power source links to each other with a plurality of loops on being distributed in resonator cavity by the power feed circuit, resonator cavity comprises a closed metal shell and is positioned at the tubular shape conductor of two tandems of shell, have the slit between two tubular shape conductors, loop is installed in the metal shell and is evenly distributed near the place, slit.Loop can have multiple set-up mode, wherein preferably makes loop pass metal shell by insulator and the loop two ends are connected with tubular shape conductor with metal shell respectively.The resonator cavity of this radio-frequency (RF) heat therapy equipment can be in patient's body particularly the body surface layer produce the electric field parallel with human body surface, preferably resolve in the radio-frequency (RF) thermotherapeutic the difficult point that always exists, it is the penetration problem of fatty problems of excessive heat and heat, effectively improve the effective utilization of thermal therapeutic apparatus, enlarged the applicable object of thermotherapy.
Description
One, technical field:
The invention belongs to medical physics treatment field, specifically relate to a kind of device that uses radio-frequency (RF) energy that disease is treated.
Two, background technology:
At present, the thermotherapy technology has obtained widespread usage in various diseases clinical, and as gastric cancer, pulmonary carcinoma, cancer of pancreas etc., it can be divided into two types of biological thermotherapy and physics thermotherapies.Wherein biological thermotherapy promptly utilizes infected by microbes to cause patient oneself fever, as utilize plasmodium to make the patient suffer from malaria and cause fever (Chinese patent of by name " utilizing plasmodium to obtain the method for human body safe high fever and relevant clinical parameters ", publication number CN1432407A).The physics thermotherapy promptly utilizes physical method to produce thermotherapy effect, it reaches therapeutic purposes by directly producing heat in the shallow table of patient body or deep, as use infrared ray (to be called the Chinese patent of " a kind of thermotherapeutic apparatus for whole body ", publication number CN1704132A), microwave (the Chinese patent of " microwave whole body heating apparatus " by name, publication number CN1657116A) or the radio frequency (Chinese patent of by name " thermotherapeutic instrument for treating tumor by means of inner field ", publication number CN1127989C) technological means such as, make corresponding physical energy be transformed into heat energy in vivo, the body interior temperature raises and reaches therapeutic purposes.But these methods are when being applied to human body, because of these physical energies disease sites that can not make the human body depths of being decayed fast after entering human body reaches effective treatment temperature.For above-mentioned reasons, infrared and microwave is suitable to be applied to body surface or to get involved the body internal heating, and deep heating curative effect is relatively poor.Radio-frequency (RF) energy is longer because of operation wavelength, so penetration depth is bigger, be applicable to disease sites in the degree of depth body is heated to treat, but radio-frequency (RF) energy is when penetrating subcutaneus adipose tissue in the radio-frequency (RF) heat therapy equipment, subcutaneus adipose tissue can be than the faster intensification of its hetero-organization of human body, it is serious fatty overheated to produce, and makes diseased tissue be difficult to be heated to effective treatment temperature.Though some equipment or technology are (as the Chinese patent of " thermotherapeutic instrument for treating tumor by means of inner field " by name, publication number ZL98118235.6) declares to have solved preferably fatty problems of excessive heat, but understand and analysis and actual test by the user, these equipment or technology have just played certain effect of improving, and head it off is far from.Subcutaneous fat superheat remains the main problem that exists in the existing radio-frequency (RF) thermotherapeutic.
Another problem that existing radio-frequency (RF) thermotherapeutic equipment exists is to need to fill water bag between irradiator and patient body, be beneficial to the coupling of electromagnetic wave energy, and the disease patient particularly the general health of patients with terminal is relatively poor, be difficult to so heavy water bag of long-time burden, make the patient in therapeutic process, feel very painful.
To be the radio-frequency (RF) energy that produces of radio frequency source entered human body by transmission to the 3rd problem of existing radio-frequency (RF) thermotherapeutic equipment can only be wherein a part, and a part will be radiated in the air, and medical personnel are shone, and particularly the operator to equipment bring adverse effect.
Three, summary of the invention
The purpose of this invention is to provide a kind of disease radio-frequency (RF) thermotherapeutic equipment; it can effectively heat required human body deep tissue; it is overheated to eliminate fat fully; do not use the couplant of water bag as radio-frequency (RF) energy; thereby eliminate the misery that water bag causes patient's compressing; make most radio-frequency (RF) energy enter human body, and have electromagnetic leakage hardly, medical personnel's safety is effectively protected.
To achieve these goals, a kind of horizontal electric field RF heat therapy equipment of the present invention, comprise a radio frequency power source, coupling feed branch network, loop and the resonator cavity that the patient is placed in one, described radio frequency power source at first produces radio-frequency (RF) energy, again by mating the feed branch network the radio-frequency (RF) energy demultiplexing, be connected respectively to by feeder line on a plurality of described loop of resonator cavity, it is characterized in that: described resonator cavity comprises a closed metal shell and is positioned at the tubular shape conductor of two tandems of shell, has the slit between two tubular shape conductors, each tubular shape conductor one end electrically contacts fully with the metal shell bottom surface respectively, and described loop is installed in the metal shell and is evenly distributed near the place, slit.
Loop can have multiple set-up mode, wherein preferably makes loop pass metal shell by insulator and the loop two ends are connected with tubular shape conductor with metal shell respectively.
The present invention also comprises other auxiliary facilities, as parts such as computer control system, temperature survey and controls, but its core is a kind of resonator cavity of the special construction that the patient is placed in one, this resonator cavity is the metal structure that is in full closeding state after a kind of the closing, because the electromagnetic radiation of radio frequency source output mainly consumes aspect four: 1. enter the human body part that is absorbed by the body, 2. absorbed a part by water bag, 3. to a resonator cavity external radiation part, 4. a reflected back radio frequency source part.In this device, because of need not to use water bag, so the problem that does not exist water bag to absorb; Owing to use totally enclosed metal resonator cavity, thereby outside hardly electromagnetic radiation wave beam; Reflection problems then can make the energy loss of reflected back radio frequency source reduce to not half by match circuit, thereby the energy of accomplishing radiation source output almost all acts on human body, promotes human body temperature to raise.
In order to solve the problems of excessive heat that patient's subcutaneous fat causes, this resonator cavity is designed in patient's body particularly, and the body surface layer produces the electric field (see figure 1) parallel with human body surface, because according to Theory of Electromagnetic Field, the human body subcutaneous fat superheat is owing to exist and the vertical electric field of human body surface or its component the body surface, and the electric field parallel with body surface produces heat hardly at subcutaneous layer of fat; Simultaneously, vertical electric field is consistent with horizontal component of electric field to the muscular tissue of human body and the effect of some other tissue generation heats, therefore by particular design to resonator cavity, be implemented in and particularly produce the electric field parallel in patient's body, can fundamentally solve the fat deposit problems of excessive heat with body surface on the top layer.And present various heat treatment units, as the home-made SR1000 of SAST, an interior disease thermal therapy system NRL type and the NRL2 type of giving birth to that reaches advanced in years, with the RF-8 of Japan etc., all be mainly to heat (see figure 2), so on Theory of Electromagnetic Field, just have serious fatty problems of excessive heat with the perpendicualr field.The BSD2000 of U.S. BSD company is considered to the best external high frequency thermotherapy instrument of present performance, this thermal therapeutic apparatus can produce more horizontal component at the centre and the center body surface in patient treatment district, but still there is a fairly large number of perpendicualr field in the body surface layer at the treatment region edge, thereby the edge at treatment region still can produce fatty overheated (see figure 3), so this equipment but does not fundamentally address this problem solving overheated the improving to some extent of fat.And resonator cavity of the present invention all shows good this problem that solved from the theory analysis to the actual tests.
Resonator cavity of the present invention mainly is made up of metal shell and two inner tubular shape conductors of skin sealing, each tubular shape conductor one end opening, the other end electrically contacts fully with the metal shell bottom surface respectively, the length sum that places two tubular shape conductors within the metal shell is less than metal shell, between two tubular shape conductors, has a slit, metal shell and the general coaxial placement of tubular shape conductor, the patient is placed on the axis of two tubular shape conductors, the position that the patient need treat is aimed in the slit of two tubular shape conductors, make the outer surface of inner wire produce equal and opposite in direction by excitation, direction identical and with axis electric current in the same way, according to Theory of Electromagnetic Field, such electric current will encourage the TEM ripple in the coaxial line between tubular shape conductor and metal shell, and field intensity is the strongest in the middle part of cylinder, owing between two tubular shape conductors the slit is arranged, and metal shell seals, and will produce to the intravital radiation of tubular guidewire.According to Theory of Electromagnetic Field, can think that this radiation is a circular waveguide, when the internal diameter of tubular shape conductor less than electromagnetic wave during at the intravital cut-off wave of tubular guidewire, electromagnetic wave mainly is distributed in the place and the near zone of tubular shape conductor opening.When the patient is placed in the tubular shape conductor, the electromagnetic wave that in human body, produces mainly concentrate on the tubular shape conductor open region and near tissue in, and it is parallel with the axis of cylinder to pass the electric field of human body.Its penetrance is fine, on cross section between the vertical centering control of cylinder axis, electromagnetic field in the tissue almost is uniform, tissue is extremely low to the absorption in magnetic field, and the energy that tissue produces under electric field action, because the electric field of the thermal treatment zone, human body place almost is uniform, so the heat that produces also is uniform, according to data [" modern neoplastic fevers iatreusiology principle, method and clinical " woods generation Xueyuan Press in the third of the twelve Earthly Branches] description, there are physiological difference in the blood vessel of diseased tissue and the blood vessel of human normal tissue, the blood vessel of human normal tissue is when tissue temperature raises, meeting natural extension, blood flow is increased, and make the tissue cooling and remain on suitable temperature, and the blood vessel of disease inside does not have dilatancy, when absorbing electromagnetic wave, diseased tissue produces heat, when the diseased tissue temperature is raise, can not lower the temperature by blood flow increasing, therefore, when the heat that the electromagnetic wave that absorbs in diseased tissue and normal structure produces is suitable, temperature in the diseased tissue can be higher than normal structure temperature, thereby can when not damaging normal surrounding tissue disease effectively be treated.
By the analysis of front as can be known, the present invention is by the structural design of resonator cavity, preferably resolve in the radio-frequency (RF) thermotherapeutic the difficult point that always exists, it is the penetration problem of fatty problems of excessive heat and heat, effectively improved the effective utilization of thermal therapeutic apparatus, enlarged the applicable object of thermotherapy, very fat patient also can effectively be treated.
Four, description of drawings:
Fig. 1 is direction of an electric field and the scattergram that the present invention produces in human body;
Fig. 2 is board-like thermal therapeutic apparatus direction of an electric field of capacitance pole and scattergram;
Fig. 3 is the simulate electric field direction and the scattergram of U.S. BSD irradiator;
Fig. 4 is a system diagram of the present invention;
Fig. 5 is the resonator cavity sketch map of a concrete embodiment;
Fig. 6 is to use the SAR scattergram of human body vertical cross-section when of the present invention;
Fig. 7 is to use the SAR scattergram of human body horizontal cross-section when of the present invention;
Fig. 8 is the intensification figure of human body subcutaneous layer of fat and Musclar layer when using the capacitor plate heat therapy machine;
Fig. 9 is at the intensification figure that uses human body subcutaneous layer of fat and Musclar layer when of the present invention;
Figure 10 makes ectonexine into ellipsoidal cavity resonator structure sketch map;
Figure 11 makes skin into cuboid, and internal layer is cylindrical cavity resonator structure sketch map.
Five, the specific embodiment:
Fig. 4 represents system diagram of the present invention, among the figure, radio frequency power source 1 at first produces radio-frequency (RF) energy, by coupling feed branch network 2 radio-frequency (RF) energy is divided into the N road again, be connected respectively to by feeder line on N the loop of resonator cavity, thereby the electromagnetic field that the excitation treatment needs in resonator cavity 3, electromagnetic field is absorbed by the human body in the resonator cavity 34.Fig. 5 is the sketch map of a specific embodiment of resonator cavity, resonator cavity is made up of the columned metal shell 5 of skin, internal layer tubular shape conductor 6,7 arranged side by side, has the slit between the tubular shape conductor 6,7, loop 8,9,10,11 on the resonator cavity is evenly distributed near this slit, each feed end passes outer cylinder by insulator, and its two end is connected with tubular shape conductor and shell respectively.With four feed port, be more even for the field of encouraging in resonator cavity in this example, generally feed port more more is evenly distributed, and then electric field is also even more on the cross section of cylinder.It is parallel with the axis of cylinder all the time to utilize the Theory of Electromagnetic Field analysis to obtain at the intravital direction of an electric field of people, thereby has eliminated fatty problems of excessive heat.Electromagnetic absorption rate (SAR) in intravital vertical transverse cross-sectional profile that adds the thermal center (-tre) of people and level cross-sectionn distributes as Fig. 6, shown in Figure 7 numeric representation relative intensity among the figure.
At the intensification figure of human body subcutaneous layer of fat and Musclar layer, the programming rate that can obviously observe fat deposit was fast more a lot of than Musclar layer when Fig. 8 worked for the common heat therapy machine that uses a pair of capacitor plate.
Fig. 9 has adopted the subcutaneous layer of fat of heat therapy machine of the technology of the present invention and the intensification figure of Musclar layer.As can be seen from the figure, the programming rate of fat deposit is far below muscular tissue, owing to there is not the fat deposit problems of excessive heat, muscular tissue can reach higher treatment temperature faster, and can keep 43 ℃ of long high temperature, thereby reach the purpose that improves therapeutic effect, this test result is consistent with the theoretical analysis result that Fig. 7 shows.
In addition, the invention is not restricted to inner conductor and outer casing all is cylindrical configuration, also can be oval cylinder by ectonexine, or the combination of above these shapes, is cylinder as skin, and internal layer is oval cylinder or the like.Figure 10 is that ectonexine makes ellipsoidal cavity resonator structure sketch map into, and among Figure 11, the metal shell of resonator cavity has been replaced by cuboid, and all the other are all identical, and its analysis result is also similar with last example.So optional other shapes of ectonexine conductor of the present invention still can obtain result preferably.
Claims (3)
1, a kind of horizontal electric field RF heat therapy equipment, comprise a radio frequency power source, coupling feed branch network, loop and the resonator cavity that the patient is placed in one, described radio frequency power source at first produces radio-frequency (RF) energy, again by described coupling feed branch network the radio-frequency (RF) energy demultiplexing, be connected respectively to by feeder line on a plurality of described loop of resonator cavity, it is characterized in that: described resonator cavity comprises a closed metal shell and is positioned at the tubular shape conductor of two tandems of shell, has the slit between two tubular shape conductors, each tubular shape conductor one end electrically contacts fully with the metal shell bottom surface respectively, and described loop is installed in the metal shell and is evenly distributed near the place, slit.
2, horizontal electric field RF heat therapy equipment according to claim 1 is characterized in that: described loop passes metal shell by insulator and its two ends are connected with tubular shape conductor with metal shell respectively.
3, horizontal electric field RF heat therapy equipment according to claim 1 and 2 is characterized in that: described metal shell is cylinder, oval cylinder or cuboid.
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2006101616849A CN100542629C (en) | 2006-12-31 | 2006-12-31 | Horizontal electric field RF heat therapy equipment |
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| CNB2006101616849A CN100542629C (en) | 2006-12-31 | 2006-12-31 | Horizontal electric field RF heat therapy equipment |
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| CN101020096A CN101020096A (en) | 2007-08-22 |
| CN100542629C true CN100542629C (en) | 2009-09-23 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4941472A (en) * | 1989-04-13 | 1990-07-17 | Surgical Engineering Associates, Inc. | Electrical access port assembly |
| US6383162B1 (en) * | 1999-11-12 | 2002-05-07 | Paul H. Sugarbaker | Apparatus and method for abdomino-pelvic chemotherapy perfusion and lavage |
| CN2704382Y (en) * | 2004-06-09 | 2005-06-15 | 南京恒埔伟业科技股份有限公司 | Radio-frequency thermotherapeutic devices |
| CN201044768Y (en) * | 2006-12-31 | 2008-04-09 | 南京恒埔伟业科技股份有限公司 | Horizontal electric field radio frequency thermotherapy instrument |
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2006
- 2006-12-31 CN CNB2006101616849A patent/CN100542629C/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4941472A (en) * | 1989-04-13 | 1990-07-17 | Surgical Engineering Associates, Inc. | Electrical access port assembly |
| US6383162B1 (en) * | 1999-11-12 | 2002-05-07 | Paul H. Sugarbaker | Apparatus and method for abdomino-pelvic chemotherapy perfusion and lavage |
| CN2704382Y (en) * | 2004-06-09 | 2005-06-15 | 南京恒埔伟业科技股份有限公司 | Radio-frequency thermotherapeutic devices |
| CN201044768Y (en) * | 2006-12-31 | 2008-04-09 | 南京恒埔伟业科技股份有限公司 | Horizontal electric field radio frequency thermotherapy instrument |
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