A microwave radiation whole body hyperthermia device

Abstract

The present invention relates to a microwave radiation whole body hyperthermia device, comprising a physiotherapy cabin equipped with a physiotherapy bed, a base for supporting the physiotherapy cabin is arranged at the bottom of the physiotherapy cabin, the physiotherapy bed can reciprocate along the length direction of the physiotherapy cabin, and is characterized in that a microwave antenna array for radiating microwave electromagnetic waves into the physiotherapy cabin is arranged in the physiotherapy cabin, the microwave antenna array extends along the length direction of the physiotherapy cabin, and the microwave antenna array is connected to a microwave source outside the cabin; the radial cross-sectional radiation angle of the microwave antenna array is greater than the angle corresponding to the target human body area, and a cylindrical reflecting surface is arranged on the inner wall of the physiotherapy cabin. Compared with the prior art, the present invention adopts a microwave electromagnetic radiation source, and a specially designed antenna distribution in the upper and lower cabins, so that the energy distribution generated by the microwave electromagnetic radiation is more uniform and the temperature rise is more stable. The device can be used to improve the body's immunity, improve blood circulation, and other treatments for cancer patients who are not suitable for radiotherapy, chemotherapy, local hyperthermia, etc.

Description

Technical Field

[0001] The invention belongs to the technical field of medical equipment, relates to human body heating treatment technology, and particularly to a device for heating treatment of a human body. Background Art

[0002] Hyperthermia is a method of treating diseases by rapidly and evenly raising the body's temperature with the help of external energy to kill diseased cells or activate the body's immune system. It has the effects of activating immune function, improving basal metabolism, improving blood circulation, assisting radiotherapy and chemotherapy, and selectively killing tumor cells. In terms of treatment form, hyperthermia can be divided into local hyperthermia and whole-body hyperthermia. Local hyperthermia is suitable for targeted treatment of local lesions, such as local pain, benign tumors, etc. Whole-body hyperthermia is not only suitable for the treatment of local lesions, but also has a good auxiliary therapeutic effect for systemic diseases with severely impaired immune function such as after major surgery, advanced diabetes, advanced diffuse tumors, and AIDS. In particular, high-temperature whole-body hyperthermia for tumors kills tumor cells by changing the body's own temperature without damaging normal tissues. Compared with radiotherapy and chemotherapy, it has fewer side effects, so it is known as a "green therapy" in clinical practice.

[0003] The existing heat therapy methods include biological method, surface conduction heating method, extracorporeal circulation heating method, extracorporeal radiation method, etc. Among them, the biological method is to induce the body to produce heat by injecting toxins and bacteria into the patient's body. Since the fever time and temperature are uncontrollable, there are great safety issues; the surface conduction heating method is a treatment method that uses a heat source medium to directly contact the human body and transfer heat to the human body, such as warm blanket wrapping method, hot water bath method, etc. The disadvantage is that the heating time is too long and the effect is very limited, and it cannot quickly and effectively increase the core temperature of the heated object; the extracorporeal circulation heating method is to use a blood pump to draw blood out of the body, heat it to a certain temperature and then return it to the body. It is an invasive treatment with expensive equipment and cost, and requires systemic anticoagulation, which is very harmful to the human body.

[0004] In vitro radiation therapy is a method of hyperthermia that uses electromagnetic waves that can penetrate human tissue to irradiate the human body from the outside to raise the temperature of human tissue. The radiation sources suitable for in vitro radiation therapy are mainly infrared and microwave. In vitro radiation therapy is a non-invasive therapy with relatively low risks and few side effects. Therefore, in vitro radiation therapy is currently a relatively important method of hyperthermia therapy.

[0005] For extracorporeal radiation hyperthermia, there are two disadvantages of local hyperthermia. On the one hand, the subcutaneous fat tissue of the human body has few blood vessels and poor heat dissipation capacity. When absorbing the energy of the radiation source at the same time, the temperature of the fat tissue rises faster than that of the muscle tissue and the internal organs. After a period of heating by a single or local radiation source, the deep tumor tissue has not reached the effective treatment temperature (42.5°C), while the temperature of the fat tissue near the plate has reached the tolerance limit of the human body (45°C). If the heating continues at this time, it will cause fat induration and burns, so the only way to relieve fat overheating is to shut down or reduce the power, but this will seriously affect the efficacy. On the other hand, since the extracorporeal radiation method uses the penetration of electromagnetic waves to directly heat the internal tissues of the human body, it is difficult to monitor the temperature of the target part of the body without invading the human body. Although it is possible to determine how long a specific device can radiate at what radiation power to achieve the target effect through repeated experiments, it is still difficult to grasp the treatment effect due to individual differences in patients, and there are certain risks. In order to prevent and control risks, the radiation power and radiation time of the equipment must be set below the ideal value obtained from the experimental conclusion, resulting in difficulty in achieving the target treatment effect.

[0006] In theory, whole-body hyperthermia can avoid the problem of different heating rates between adipose tissue and other tissues. At the same time, conventional body temperature detection methods (detecting oral temperature, submerged temperature, anal temperature, etc.) can be used to monitor body temperature. However, the prerequisite is that the heating of the whole body must be sufficiently uniform.

[0007] The whole body hyperthermia equipment currently available on the market based on the external radiation method is infrared radiation hyperthermia equipment. However, the ability of infrared rays to penetrate human tissue is relatively weak. Even near-infrared rays (or short-wave infrared rays, with a wavelength of 0.76 to 1.5 μm) can only penetrate 5 to 10 mm into human tissue (Design and Implementation of Photoelectric Protection Control, Chen Kuixu, Graduation Project of Nanchong Vocational and Technical College, November 7, 2013). Therefore, the use of infrared hyperthermia equipment for whole body hyperthermia has the problem of serious longitudinal uneven heating. There is a situation where the monitored human body temperature is still relatively low, but the surface temperature has exceeded the skin's tolerance limit. If it is too hasty, it is easy to cause burns on the body surface. In practice, in order to prevent burns on the body surface, only low-power slow heating can be used. Therefore, the whole body temperature rise process of infrared radiation whole body hyperthermia is very slow.

[0008] Compared with infrared rays, which have poor penetrating power, microwaves have better penetrating power and can penetrate relatively deeply into the human body. Using microwaves to irradiate the human body for hyperthermia can effectively solve the problem of uneven longitudinal temperature. However, the existing microwave hyperthermia radiation heads have the characteristics of narrow beam, strong directionality, concentrated radiation range, and fast attenuation of radiation intensity from the center to the edge within the radiation range. They can be used for local hyperthermia, but are difficult to be used for whole-body hyperthermia. Therefore, the microwave hyperthermia devices currently available on the market are all devices used for local hyperthermia (such as BSD-400 equipment and BSD-2000 hyperthermia machines produced by a certain American company; RF-8 hyperthermia machines produced by a certain Japanese company; UHR-2000 hyperthermia machines produced by a certain Hunan company; SR1000 tumor microwave hyperthermia machine system produced by a certain Shenzhen company, etc.).

[0009] If a large number of existing microwave thermotherapy radiation heads are used in combination to achieve whole-body hyperthermia, there will be a problem that the temperature in the center of each radiation head irradiation area is concentrated and the edge temperature is low. This problem will cause the overall body temperature to not reach the treatment requirements, while the center of each radiation head irradiation area has exceeded the tolerance limit of human tissue. How to achieve microwave whole-body hyperthermia is still a technical problem that has not been solved at present. Summary of the invention

[0010] The purpose of the present invention is to disclose a medical device based on the external radiation method and using microwaves as the radiation source, which is suitable for whole body hyperthermia, in view of the fact that there is no microwave whole body hyperthermia device in the prior art. The invention aims to solve the problem that the infrared whole body hyperthermia device has slow heating and poor treatment effect, and fill the gap in the lack of microwave whole body hyperthermia device in hyperthermia technology.

[0011] To achieve the above-mentioned purpose, the present invention proposes a microwave radiation whole-body thermal therapy device, comprising a therapy cabin equipped with a therapy bed, a base for supporting the therapy cabin is arranged at the bottom of the therapy cabin, and the therapy bed can reciprocate along the length direction of the therapy cabin, and is characterized in that a microwave antenna array for radiating microwave electromagnetic waves into the therapy cabin is arranged in the therapy cabin, the microwave antenna array extends along the length direction of the therapy cabin, and the microwave antenna array is connected to a microwave source outside the cabin; the radial cross-sectional radiation angle of the microwave antenna array is greater than the angle corresponding to the target human body area, and a cylindrical reflecting surface is arranged on the inner wall of the therapy cabin.

[0012] Since the field strength in the radiation area (sector area) of the directional antenna decreases from the center line (90 degree direction) to the two sides (0 degree and 180 degree directions), and the cross-sectional shape of the human body is approximately elliptical, the result is that on the cross-sectional area of ​​the human body, the beam close to the center line, which is originally relatively stronger, enters the human body at a smaller inclination angle to form a greater radiation intensity, and the beam far from the center line, which is originally relatively weaker, enters the human body at a larger inclination angle to form a smaller radiation intensity. The linear antenna array designed by the present invention has a radial cross-sectional radiation range larger than the target human body area, and the radiated beams include a direct beam directly irradiated on the target human body area and a supplementary beam not directly irradiated on the target human body area. The supplementary beam is reflected by a specially designed cylindrical reflective surface to supplement the area in the target human body area where the radiation intensity formed by the direct beam is smaller, so that the area reaches a radiation intensity close to that of the strong radiation area, and finally realizes relatively uniform microwave radiation to the target human body area.

[0013] Furthermore, an antenna array is disposed above and below the cabin body of the physiotherapy cabin, respectively, to radiate microwave electromagnetic waves into the physiotherapy cabin from above and below.

[0014] Furthermore, the antenna array is an antenna array composed of microwave patch antennas, including a number of evenly distributed antenna units. The selection of patch antennas can obtain better directivity.

[0015] Furthermore, the antenna array includes a plurality of antenna units evenly arranged in a straight line, and the number of the antenna units is preferably 4-10.

[0016] Optionally, there are multiple antenna arrays, and the multiple antenna arrays are distributed along the circumference of the therapy cabin.

[0017] Furthermore, the physiotherapy bed includes a head and a bed body. When the physiotherapy bed moves into the cabin to the end of the travel, the head is located outside the physiotherapy cabin, and the bed body is located inside the physiotherapy cabin.

[0018] Furthermore, a hatch for people to enter and exit is provided at one end of the cabin.

[0019] Furthermore, the cabin body of the physiotherapy cabin includes a shielding body in an inner layer and a shell in an outer layer.

[0020] The shell body is composed of a side shell body and two end covers, and one of the end covers is provided with a human body entrance and exit.

[0021] The shielding body comprises a side wall shielding layer arranged on the side wall of the cabin body and two shielding end plates respectively arranged inside the two end covers of the shell body. The two shielding end plates are sealed and connected with the side wall shielding layer to form the inner shielding body of the cabin body.

[0022] One of the shielding end plates is provided with an opening for a human body to enter and exit the cabin, and a shielding curtain is provided at the opening. A notch-shaped neck cover is provided at the lower edge of the shielding curtain for covering the patient's neck.

[0023] Optionally, a heat-insulating layer is provided between the side wall shielding layer and the shell, and the heat-insulating layer is attached to the outer surface of the side wall shielding layer.

[0024] Preferably, the inner side of the side wall shielding layer and / or the two shielding end plates is provided with a preferably soft covering layer, which is beneficial to improving the appearance of the cabin on the one hand, and can provide better protection for the patient on the other hand.

[0025] Optionally, the inner surface of the side wall shielding layer is a smooth plane. Alternatively, the inner surface of the side wall shielding layer is a wavy curved surface.

[0026] Optionally, the cross-sectional shape of the physiotherapy cabin is circular or elliptical.

[0027] In order to facilitate transportation and assembly, the present invention designs the cabin body of the physiotherapy cabin as a split structure. Specifically, the cabin body of the physiotherapy cabin is assembled by an upper cabin body, a lower cabin body, a first end cover and a second end cover. The physiotherapy bed is arranged on the lower cabin body, and the base is also arranged on the lower cabin body.

[0028] The upper cabin body includes an upper shell, an upper cabin body bracket and an upper shielding body, and the upper shielding body is composed of an upper side wall shielding layer, a first upper shielding end plate, and a second upper shielding end plate; the lower cabin body includes a lower shell, a lower cabin body bracket and a lower shielding body, and the lower shielding body is composed of a lower side wall shielding layer, a first lower shielding end plate, and a second lower shielding end plate; the upper shielding body is fixedly connected to the upper cabin body bracket as a whole, and the lower shielding body is fixedly connected to the lower cabin body bracket as a whole, and the upper and lower wholes are assembled together through a detachable connecting structure, and the joint between the upper shielding body and the lower shielding body is sealed, and the upper shell and the lower shell are respectively assembled on the upper and lower wholes through detachable connecting structures.

[0029] Furthermore, a physiotherapy bed bracket is fixed on the inner wall of the physiotherapy cabin, and the physiotherapy bed is movably assembled on the physiotherapy bed bracket through a guide rail mechanism.

[0030] Furthermore, a microwave source and a control box are arranged in the base, the microwave source and the control box are electrically connected, and the microwave source is connected to the antenna array through a feeder.

[0031] Beneficial effects of the present invention:

[0032] Using microwave signals as the radiation source overcomes the side effects of traditional infrared whole body hyperthermia, which is shallow penetration and uneven temperature distribution, leading to insufficient deep heating and overheating of the surface, and can also prevent uneven heating of a single local microwave hyperthermia. During the entire heating process, the human body surface temperature is within a safe range, which is safer, has a deeper penetration depth, and is easier to control temperature.

[0033] By designing a wide-beam linear antenna array and an innovative cylindrical reflecting surface to radiate microwave signals to the human body, the problems of concentrated radiation range of existing microwave radiation heads and rapid attenuation of radiation intensity from the center to the edge within the radiation range are solved, so that microwaves can be radiated relatively evenly to the target heating area.

[0034] The patient's head is exposed outside the heat source cover to avoid stuffiness caused by the temperature rise, and the patient can communicate with the operator at any time so that the operator can keep track of the patient's condition at any time; the shielding cloth blocks the overflow of electromagnetic waves, ensuring that the head is not irradiated to the greatest extent, avoiding discomfort to the user caused by excessive head temperature.

[0035] The use of specific microwave electromagnetic radiation sources and specially designed antenna distribution in the upper and lower cabins makes the energy distribution generated by the microwave electromagnetic radiation more uniform and the heating more stable, reducing the discomfort of the patient during the thermal therapy. No anesthesia is required during the entire treatment process, and the patient can provide timely feedback on the treatment experience, eliminating the side effects of overheating damage, skin burns, pressure sores, etc. caused by general anesthesia required for traditional whole-body thermal therapy.

[0036] The system can monitor human life signs such as breathing, heart rate, blood oxygen saturation, and body temperature in real time. It uses an electromagnetic spectrum with suitable penetration, which can directly act on the immune organs of the whole body and various diseased parts of the whole body. The equipment can be used to improve the body's immunity, improve blood circulation, and treat cancer patients who are not suitable for radiotherapy, chemotherapy, local hyperthermia, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a schematic diagram of the principle that microwave antennas are difficult to achieve uniform radiation of the human body.

[0038] Figure 2 It is a schematic diagram of the relationship between the radiation angle used by the whole body hyperthermia treatment device of the present invention and the target human body area.

[0039] Figure 3 It is a schematic diagram of the radiation principle of the whole body hyperthermia therapy device of the present invention.

[0040] Figure 4 It is a schematic diagram of the structure of the whole body hyperthermia treatment device of the present invention.

[0041] Figure 5 This is a schematic diagram of the upper cabin structure of the physiotherapy cabin.

[0042] Figure 6 yes Figure 5 A partial enlarged view of point E in the middle.

[0043] Figure 7 yes Figure 5 A partial enlarged view of point D in the middle.

[0044] Figure 8 It is a schematic diagram of the lower cabin and base structure of the physiotherapy cabin.

[0045] Fig. 9 yes Figure 8 A partial enlarged view of point F in the middle.

[0046] Fig.10 It is a schematic diagram of the base support structure of the physiotherapy cabin.

[0047] Fig.11 It is a schematic diagram of the components of the antenna device.

[0048] Fig.12 It is a schematic diagram of the wiring structure of the antenna feeder.

[0049] Fig.13 It is a schematic diagram of the patch antenna array structure.

[0050] Fig.14 It is a schematic diagram of the antenna array feeding network structure.

[0051] Fig.15 It is a schematic diagram of the structure of a physiotherapy bed.

[0052] Fig.16 It is a schematic diagram of the structural composition of the bed body of a physiotherapy bed.

[0053] Fig.17 yes Fig.16 A partial enlarged view of point I in the middle.

[0054] Fig.18 It is a schematic diagram of the structure of the guide rail part of the physiotherapy bed.

[0055] Fig.19 yes Fig.18 The partial enlarged view at point Z in the middle shows the connection structure and positioning structure between the driving mechanism of the guide rail part of the physiotherapy bed and the bed body part.

[0056] Fig. 20 yes Fig.19 Schematic diagram of another perspective of the structural part shown.

[0057] Fig.21 It is a schematic diagram of the transmission structure of the driving mechanism of the physiotherapy bed.

[0058] Fig. 22 This is a schematic diagram of the visible structure of the right end of the physiotherapy cabin after the right end cover is removed.

[0059] Fig.23 yes Fig. 22 A partial enlarged view of point A in the middle.

[0060] Fig.24 It is a schematic diagram of the assembly relationship between the upper cabin body and the lower cabin body.

[0061] Fig.25 yes Fig.24 A partial enlarged view of point K in the middle.

[0062] Fig.26 yes Fig.24 A partial enlarged view of the middle T.

[0063] Fig. 27 It is a schematic diagram of the sealing structure between the upper cabin and the lower cabin.

[0064] Fig.28 for Fig. 27 A partial enlarged view of point C in the middle.

[0065] Fig.29 for Fig. 27 A partial enlarged view of the middle Q. DETAILED DESCRIPTION

[0066] The structural composition and working principle of the whole body hyperthermia treatment device of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0067] Reference Figure 1 There are two main reasons why microwave antennas are difficult to achieve uniform heating of the human body. First, the electric field distribution of microwave antennas has the characteristics of high intensity in the center and rapid weakening toward the edge. That is, within the radiation range of the microwave antenna, the radiation intensity of the beam b2 near the edge will be significantly weaker than the radiation intensity of the beam b1 near the 90-degree direction. Therefore, in the area where the human body is irradiated, the parts near the edge heat up slower than the parts near the center, resulting in uneven temperatures in different parts. Second, since the cross-sectional shape of the human body is approximately elliptical, the incident angle θ2 of the beam b2 near the edge of the antenna radiation range radiating to the human body is greater than the incident angle θ1 of the beam b1 near the 90-degree direction. Therefore, the radiation efficiency of the beam b2 near the edge of the antenna radiation range is lower than the radiation efficiency of the beam b1 near the 90-degree direction, which in turn determines that the human body heats up very quickly when radiated toward the front of the antenna, while the parts closer to the sides heat up more slowly when radiated. The above two influencing factors are superimposed on each other, further exacerbating the problem of uneven heating in microwave radiation hyperthermia therapy.

[0068] Reference Figure 2-3In order to achieve microwave radiation whole-body hyperthermia and avoid local center temperature concentration, the present invention first adopts a patch antenna array arranged along the length of the human body to replace the radiation head used in the existing microwave local hyperthermia equipment, so as to obtain a larger radiation angle, so that the radiation range covers the width of the human body and disperses the microwave energy.

[0069] Then, in order to further achieve relatively uniform heating of the human body by microwave signals, when designing the antenna, the radial cross-sectional radiation angle β of the microwave antenna array is designed to be greater than the angle α corresponding to the target human body area 85. In addition to the beam that is directly irradiated to the human body (shown by the solid line in the figure), the antenna array 56 also reserves a portion of the beam that is not directly irradiated to the human body (shown by the dotted line in the figure). Then, a cylindrical reflecting surface 84 is set around the radiation area, and the reserved portion of the beam that is not directly irradiated to the human body is supplemented by one or more reflections to the part where the direct radiation intensity of the microwave antenna is weaker.

[0070] Reference Figure 4 The main structure of the microwave radiation whole body hyperthermia therapy device of the present invention is a physiotherapy cabin equipped with a physiotherapy bed 78, a base 47 is arranged under the physiotherapy cabin, a microwave source 53 for generating microwave signals and a control cabinet 54 integrating a power supply and a control unit are arranged inside the base, and a touch screen bracket 77 is arranged on the side of the physiotherapy cabin, and the touch screen bracket is provided with a cabin entry button, an emergency stop switch, an indicator light and a touch display screen. The cabin of the physiotherapy cabin is composed of an upper cabin 37, a lower cabin 38, a left end cover 79 and a right end cover 80. The upper cabin 37 and the lower cabin 38 are both semi-cylindrical. The upper cabin and the lower cabin are combined to form a cylindrical cabin. The left end cover 79 is connected to the front end of the upper and lower cabins through a snap-fit ​​structure, and the right end cover 80 is connected to the rear end of the upper and lower cabins through a hook structure. The left end cover 79 is provided with a hatch for the human body and the bed to enter and exit. The side of the physiotherapy cabin is also provided with a decorative strip 81, which has two rows of upper and lower clamps, which are respectively clamped on the upper and lower side shells of the upper and lower cabins, just fixing the upper and lower cabins. The base 47 is located at the bottom of the lower cabin 38. The control unit uses a plc control system.

[0071] Reference Figure 5-7The upper cabin 37 is composed of an upper cabin support 39, an upper left shielding end plate (i.e., the first upper shielding end plate in the invention) 44, an upper right shielding end plate (i.e., the second upper shielding end plate in the invention) 45, an upper side wall shielding layer 100a, an upper side wall insulation layer 101a, and an upper shell 102a. The upper cabin support 39 is composed of four semicircular sheet metal support bars 120 and three horizontally arranged sheet metal bars. The four semicircular sheet metal support bars are parallel to each other and are in a vertical plane. There is a groove just above the three semicircular sheet metal support bars on the left. The top sheet metal bar 40 of the upper cabin also has three grooves that cooperate with the corresponding grooves of the three semi-semicircular sheet metal support bars on the left. The two ends of the top sheet metal bar of the upper cabin are fixed to the semicircular sheet metal support bars on the left and right ends. Both ends of the two middle semicircular sheet metal support bars have two protruding clips that are just stuck in the front sheet metal bar 41 of the upper cabin and the rear sheet metal bar 42 of the upper cabin and fixed. The two ends of the two semicircular sheet metal support bars on the left and right sides are flush and fixedly connected with the front sheet metal bar 41 of the upper cabin and the rear sheet metal bar 42 of the upper cabin. The upper side wall shielding layer 100a is a sheet metal structure arranged in a semi-cylindrical shape. The upper side wall shielding layer 100a is covered by the upper cabin support 39. The left and right ends of the upper side wall shielding layer 100a are flush with the first semi-circular ring sheet metal support bar on the left and the first semi-circular ring sheet metal support bar on the right, respectively. The left and right ends of the upper side wall shielding layer 100a are sealed and connected to the upper left shielding end plate and the upper right shielding end plate, respectively. The upper side wall shielding layer is flanged outward on both sides. The flanges 100c on both sides of the upper side wall shielding layer are respectively fixedly connected to the upper cabin front sheet metal bar 41 and the upper cabin rear sheet metal bar 42 from below by bolts. The upper side wall insulation layer 101a is composed of six pieces, which are attached to the outer surface of the upper side wall shielding layer. The upper cabin support 39 passes through the gap between the six components of the upper cabin insulation layer. The upper left shielding end plate 44 is fixedly connected to the first semicircular ring sheet metal support bar on the left side of the upper cabin support 39 by screws; the upper right shielding end plate 45 is fixedly connected to the first semicircular ring sheet metal support bar on the right side of the upper cabin support 39 by screws. The upper right shielding end plate 45 is provided with a feeder sealing joint of the first antenna device, and the upper shell 102a is covered on the upper cabin support through its own groove, and its material is plastic. The first antenna device 106a is provided in the upper cabin.

[0072] Reference Figure 8-9The lower cabin body includes a lower cabin body bracket 58, a left lower shielding end plate (i.e., the first lower shielding end plate in the invention) 27, a right lower shielding end plate (i.e., the second lower shielding end plate in the invention) 26, a lower side wall shielding layer 100b, a lower side wall insulation layer 101b, and a lower shell 102b. The lower cabin body bracket 58 is composed of another 4 semicircular ring-shaped sheet metal support bars 122, a lower cabin body front steel 88, a lower cabin body rear steel 89, a lower cabin body front sheet metal bar 61, and a lower cabin body rear sheet metal bar 62. The two semicircular sheet metal strips in the middle each have two notches that match the front steel 88 and the rear steel 89 of the lower cabin respectively; the two ends of the four semicircular sheet metal support strips are fixedly connected to the front sheet metal strip 61 and the rear sheet metal strip 62 of the lower cabin respectively; the lower side wall shielding layer 100b is a sheet metal structure arranged in a semi-cylindrical shape, which is covered by the lower cabin support 58 inside, and the left and right ends of the lower side wall shielding layer 100b are flush with the first semicircular sheet metal support strip on the left and the first semicircular sheet metal support strip on the right respectively. The left and right ends of the lower side wall shielding layer 100b are sealedly connected to the left lower shielding end plate and the right lower shielding end plate respectively. The two sides of the lower side wall shielding layer 100b are turned outward, and the turning edges on both sides of the lower side wall shielding layer are fixedly connected to the front sheet metal strip 61 and the rear sheet metal strip 62 of the lower cabin respectively from above by bolts. The lower cabin insulation layer 101b is composed of 9 pieces, which are attached to the outer surface of the lower side wall shielding layer. The lower cabin bracket 58 passes through the gap between the 9 components of the lower side wall insulation layer. Both ends of the lower cabin front steel 88 and the lower cabin rear steel 89 have protruding heads inserted into the left lower shielding end plate 27 and the right lower shielding end plate 26 and fixedly connected. The right lower shielding end plate 26 is semicircular, with its top edge turned outward, attached to the first semicircular ring-shaped sheet metal strip on the right end of the lower cabin bracket 58 and connected with screws. Six sections of reinforcing ribs are welded on its right side for strengthening support. The feeder sealing joint of the second antenna device is provided on the right lower shielding end plate 26. The left lower shielding end plate 27 is semicircular sheet metal, with a bed installation position in the middle. The inner corrugated surface sealing baffle is connected to the left lower shielding end plate by screws. The lower shell 102b is made of plastic material and is an integral structure with the shell of the base. The second antenna device 106b is provided in the lower cabin.

[0073] Reference Fig.10The base is composed of a base support body 48 and a base shell. The base shell and the lower shell are an integrated structure. Below the base support body 48 is a base bracket 51 welded by 2 rectangular steels and 4 short square steels. Four movable roller devices 115 are provided below the base bracket. Eight vertically distributed support square steels 52 are welded on the base bracket 51. The upper ends of the support square steels 52 have grooves that match the lower cabin front steel and the lower cabin rear steel of the lower cabin bracket. The upper ends of the support square steels 52 are welded to the corresponding lower cabin front steel and the lower cabin rear steel of the lower cabin bracket. There are three equal-sized sheet metal bottom plates 50 between the four short square steels on the base bracket 51, and the three equal-sized sheet metal bottom plates 50 are welded to the base bracket 51. Rectangular metal strips 107 are welded to the three supporting square steels on the right side of the front end of the base support body, and a microwave source 53 is installed on the base bracket 51 near the right end supporting square steel. A control cabinet 54 is installed between the two groups of supporting square steels on the left side of the microwave source 53. The microwave source and the control cabinet are rectangular in shape, and are screwed to the rectangular metal strips 107 welded to the three supporting square steels on the right side of the front end through the protruding parts provided at their front ends.

[0074] Reference Figure 11-14 Taking the second antenna device as an example, the antenna device includes an antenna cover 57, an antenna array 56 and a mounting metal plate 43. The mounting metal plate 43 is located in the middle of the lower cabin. The two sides of the mounting metal plate 43 are attached to the side wall shielding layer sheet metal and welded and fixed. The antenna array 56 is connected to the mounting metal plate 43 by bolts. The antenna cover 57 is installed above the antenna array 56. The antenna cover 57 is fixedly connected to the mounting metal plate 43 by screws to cover the antenna array. Feeder sealing joints 108 are provided near the edge in the middle of the upper right shielding end plate 45 and the lower right shielding end plate 26. The feeder connected to the antenna array in the cabin is connected to the feeder outside the cabin through the feeder sealing joint 108, and the feeder outside the cabin is connected to the microwave source.

[0075] The antenna array 56 includes a metal base plate 63, antenna units arranged on the metal base plate 63, and a feeding network. Six antenna units 64 are evenly arranged on the metal base plate 63, each antenna unit is a square patch, and the antenna unit adopts an air-dielectric hybrid microstrip antenna. The antenna is corroded on an FR4 printed board with a dielectric constant of 4.4. The feed point 87 is located on one side of the square patch, and the feed line connected to the square patch passes through the metal base plate backward. A 1-to-3 power divider and three 1-to-2 power dividers are arranged in the feeding network, and the six antenna ports are combined into a total feeding port. The electromagnetic radiation signal released by the microwave source is output from the feed line through the total feeding port to the antenna array, and the microwave energy of the antenna array performs microwave heating on the target human body area 85 lying in the middle of the metal cylinder to achieve a physical therapy function. Considering the installation of the feeding network, the metal base plate is turned in the opposite direction of the antenna unit to form a slot-shaped structure, and the power divider and the cable used to connect the power dividers are arranged in the slot-shaped structure.

[0076] Reference Figure 15-23 The electric telescopic bed includes a guide rail portion 65 and a bed portion 67, wherein the bed portion 67 is slidably arranged on the lower cabin through the guide rail portion. The bed portion 67 includes a bed frame 14, a bed shell 23 and a plastic bottom shell 22. The bed support 14 is composed of 5 square steels to form a frame structure, wherein the first square steel 1 and the second square steel 2 are arranged in parallel, the third square steel 3, the fourth square steel, and the fifth square steel are perpendicular to the first square steel 1 and the second square steel 2, and the ends of the third square steel 3, the fourth square steel, and the fifth square steel are respectively welded and fixedly connected to the first square steel 1 and the second square steel 2; the first sheet metal plate 4 and the second sheet metal plate with three vertical angles are welded to the inner edge of the right end of the bed support 14, and the eighth square steel 31 and the ninth square steel 32 are connected by bolts under the third angle of the first sheet metal plate 4 and the second sheet metal plate, and a limiting plate 34 is respectively provided on the inner side thereof, and the two limiting plates 34 are welded and fixed to the inner sides of the eighth square steel 31 and the ninth square steel 32; The sheet metal slide rail 30 is fixed under the first square steel 1 and the second square steel 2 by screws; four sheet metal brackets 13 are welded on the inner edges of the first square steel 1 and the second square steel 2 through positioning holes respectively; four wooden strips 20 are arranged between the corresponding sheet metal brackets 13 on the first square steel 1 and the second square steel 2; the plastic bottom shell 22 is arranged on the lower side of the bed bracket, and the bed outer shell 23 is arranged on the upper side of the bed bracket, the plastic bottom shell and the bed outer shell are covered on the bed bracket, and the bed outer shell, the bed bracket and the plastic bottom shell are fixedly connected together by bolts.

[0077] The guide rail part includes a guide rail bracket and a driving mechanism. The guide rail bracket is composed of 3 square steels and 1 guide rail bracket sheet metal strip 19 to form a square frame structure. The 3 square steels are the fourth square steel of the guide rail bracket, the fifth square steel of the guide rail bracket, and the sixth square steel of the guide rail bracket. The two ends of the sixth square steel of the guide rail bracket 18 are welded and fixed to the fourth square steel of the guide rail bracket 16 and the fifth square steel of the guide rail bracket 17. The cross section of the guide rail bracket sheet metal strip is C-shaped. Four slider devices 76 are respectively arranged on the fourth square steel of the guide rail bracket 16 and the fifth square steel of the guide rail bracket 17, and the slide rail 30 of the bed part is slidably matched with the slider device 76. A pulley device 28 is respectively arranged between the first slider device and the second slider device on the fourth square steel of the guide rail bracket 16 and the fifth square steel of the guide rail bracket 17. A three-sided support leg 116 is welded to the right end of the fourth square steel of the guide rail bracket and the fifth square steel of the guide rail bracket, respectively, for connecting the fourth square steel of the guide rail bracket and the fifth square steel of the guide rail bracket to the lower right shielding end plate. The driving mechanism includes two sets of synchronous belt mechanisms arranged between the fourth square steel of the guide rail bracket and the fifth square steel of the guide rail bracket. The guide rail bracket has a shaft on the left and right, respectively. The two shafts are respectively connected to two synchronous pulleys 117 in a set of synchronous belt mechanisms through keys. The left and right synchronous pulleys in a set of synchronous belt mechanisms are connected through synchronous belts; another gear 118 connected by a key is provided on the right shaft, and a gear 119 connected by a key to the motor output shaft meshes with the gear 118. The motor device 36 is fixedly connected to the lower right shielding end plate 26 by bolts. The rotation of the gear 119 on the motor output shaft drives the gear 118 on the right end shaft to rotate in the opposite direction, further driving the synchronous pulley 117 to rotate, thereby driving the synchronous belt to move; the two synchronous belts of the two sets of same-point belt mechanisms are respectively fixed to the eighth square steel 31 and the ninth square steel 32 of the bed support through the connection module 33, thereby realizing the driving mechanism to drive the bed part. A limit device 35 is provided on the inner side of the right end of the fourth square steel 16 of the guide rail support, and a limit bracket is provided between the limit device 35 and the fourth square steel. The limit device is connected to the limit bracket with screws, and the limit bracket is fixed to the fourth square steel by screws. The limit device plays a limiting role in the movement of the bed support.

[0078] The right end of the guide rail part is supported by the right lower shielding end plate 26, and the left end of the guide rail part is supported by the left lower shielding end plate 27. The three-sided support feet 116 welded to the right ends of the fourth square steel of the guide rail bracket and the fifth square steel of the guide rail bracket are respectively fixedly connected to the right lower shielding end plate 26, and the three-sided support feet 116 have protrusions inserted into the right lower shielding end plate 26 to make the connection more reliable. The left ends of the fourth square steel of the guide rail bracket and the fifth square steel of the guide rail bracket pass through the left lower shielding end plate 27, and the entire electric telescopic bed is supported by the right lower shielding end plate 26 and the left lower shielding end plate 27 through the fourth square steel of the guide rail bracket and the fifth square steel of the guide rail bracket.

[0079] Reference Figure 24-29A sealing strip 103 is arranged between the upper cabin body and the lower cabin body, and the sealing strip 103 consists of two sections of L-shaped sealing strips and one section of long strip sealing strip. One section of long strip sealing strip is pressed between the outward flange 45a of the lower right upper shielding end plate of the upper cabin body and the outward flange 26a of the upper right lower shielding end plate of the lower cabin body. The long sides of the two sections of L-shaped sealing strips are respectively pressed between the outward flanges 100c on both sides of the upper side wall shielding layer of the upper cabin body and the outward flanges 100d on both sides of the lower side wall shielding layer of the lower cabin body. The short sides of the two sections of L-shaped sealing strips are pressed between the outward flange 44a of the lower left upper shielding end plate of the upper cabin body and the outward flange 27a of the upper left lower shielding end plate of the lower cabin body.

[0080] The bolts connecting the side walls of the upper and lower cabins pass through the front sheet metal strip 41 of the upper cabin / the rear sheet metal strip 42 of the upper cabin, the flange 100c of the upper side wall shielding layer 100a, the sealing strip 103, the flange of the lower side wall shielding layer 100b and the front sheet metal strip 61 of the lower cabin / the rear sheet metal strip 62 of the lower cabin from top to bottom, fastening the five together to achieve the connection of the upper and lower cabin side walls while achieving side sealing.

[0081] The bolts connecting the right ends of the upper and lower cabins pass through the flange 45a of the upper right shielding end plate 45 of the upper cabin, the sealing strip 103, and the flange 26a of the lower right shielding end plate 26 of the lower cabin from top to bottom, fastening the three together to achieve the connection of the right ends of the upper and lower cabins and achieve the sealing of the right end butt joint.

[0082] The bolts connecting the left ends of the upper and lower cabins pass through the flange 44a of the upper left shielding end plate 44 of the upper cabin, the sealing strip 103, and the flange 27a of the lower left shielding end plate 27 of the lower cabin from top to bottom, fastening the three together to achieve the connection of the left ends of the upper and lower cabins and the sealing of the left end hatch joint.

[0083] An opening for the human body to pass through is provided on the upper left shielding end plate 44 at a position corresponding to the hatch on the left end cover 79, and a shielding cloth 105 is provided at the opening, and a notch is provided at the lower side of the shielding cloth 105. The bed body of the electric telescopic bed includes a bed head 671 and a bed body 672. When performing thermal therapy, the bed head 671 is located outside the cabin body, and the bed body 672 is partially located inside the cabin body. The patient lies on the bed body, with the head located at the bed head and the neck located at the junction of the bed head and the bed body. The notch provided at the lower side of the shielding cloth 105 allows it to be easily put on the neck of the human body. At this time, the entire cabin body is in a sealed space, thereby achieving a better physical therapy effect.

[0084] In this embodiment, the power of the microwave source is adjustable at 0-1kw, the frequency of the microwave source is 850-1000MHZ, and the microwave source is connected to an external water cooling device through an inlet and outlet water pipe; two groups of microwave antennas, each group has 6 array elements evenly distributed, and are connected to the microwave source through feeders respectively; the physiotherapy bed is connected to the physiotherapy cabin through an electric guide rail; the physiotherapy bed can be pushed out of the physiotherapy cabin by pressing the exit button or the exit button on the touch screen; after the physiotherapy bed is pulled out, the therapist lies on the physiotherapy bed, and the vital sign monitoring sensor probe is fixed to the corresponding position on the therapist's body; the physiotherapy bed is pushed into the physiotherapy cabin by the entry button or the entry button on the touch screen, and the physiotherapy bed is automatically locked when in place, and the shielding cloth is put around the therapist's neck and fixed to the opening edge of the front upper shielding end plate. When ready, click the start button on the touch screen to start working. When the preset temperature is reached, the microwave source automatically reduces the power to maintain the preset temperature, and automatically stops running after the set time is reached. During the working process, the sensor readings are monitored according to the vital signs. If the patient's body temperature, heart rate, pulse or blood oxygen saturation is abnormal and exceeds the preset value, the machine will automatically stop, and the abnormality must be manually resolved before continuing to work. If the patient requires a temporary stop or other emergency situation, the stop button on the touch screen or the emergency stop button can be pressed. The PLC control system is connected to the therapy bed, microwave source, and touch screen through the built-in power cord, which can realize functions such as equipment switching, temperature control, therapy bed entry and exit, and data storage.

[0085] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A microwave radiation whole body hyperthermia device, comprising a physiotherapy cabin equipped with a physiotherapy bed, a base for supporting the physiotherapy cabin is provided at the bottom of the physiotherapy cabin, and the physiotherapy bed can reciprocate along the length direction of the physiotherapy cabin, characterized in that: The physiotherapy cabin is provided with a microwave antenna array for radiating microwave electromagnetic waves into the physiotherapy cabin, the microwave antenna array extends along the length direction of the physiotherapy cabin, and the microwave antenna array is connected to a microwave source outside the cabin; the radial cross-sectional radiation angle of the microwave antenna array is greater than the angle corresponding to the target human body area, and a cylindrical reflecting surface is provided on the inner wall of the physiotherapy cabin; An antenna array is disposed above and below the body of the therapy cabin, respectively, to radiate microwave electromagnetic waves into the therapy cabin from above and below; The microwave antenna array is a microwave antenna array composed of microwave patch antennas, and the microwave antenna array includes a plurality of antenna units evenly arranged in a straight line; The microwave antenna array includes a metal base plate, antenna units arranged on the metal base plate, and a feeding network. The plurality of antenna units are evenly arranged on the metal base plate, each antenna unit is a square patch, and the antenna unit adopts an air and FR4 medium mixed microstrip antenna. The antenna is corroded on an FR4 printed circuit board with a dielectric constant of 4.

4. The feeding point is located on one side of the square patch, and a feed line connected to the square patch passes through the metal base plate backwards. A 1-to-3 power divider and three 1-to-2 power dividers are arranged in the feeding network to synthesize 6 antenna ports into a total feeding port.

2. The microwave radiation whole body hyperthermia device according to claim 1, characterized in that: The physiotherapy bed comprises a head and a bed body. When the physiotherapy bed moves into the cabin to the end of the travel, the head is located outside the physiotherapy cabin, and the bed body is located inside the physiotherapy cabin.

3. The microwave radiation whole body hyperthermia treatment device according to claim 1, characterized in that: A hatch for people to enter and exit is arranged at one end of the cabin body.

4. The microwave radiation whole body hyperthermia treatment device according to claim 1, characterized in that: The cabin body of the physiotherapy cabin comprises an inner shielding body located in the inner layer and a shell located in the outer layer.

5. The microwave radiation whole body hyperthermia treatment device according to claim 4, characterized in that: The shell body is composed of a side shell body and two end covers, and one of the end covers is provided with a human body entrance and exit.

6. The microwave radiation whole body hyperthermia treatment device according to claim 4, characterized in that: The shielding body comprises a side wall shielding layer and shielding end plates at both ends. The shielding end plates at both ends are sealed and connected with the side wall shielding layer to form an inner shielding body of the cabin body.

7. The microwave radiation whole body hyperthermia treatment device according to claim 6, characterized in that: An opening for a human body to enter and exit the cabin is arranged on a shielding end plate at one end, and a shielding curtain is arranged at the opening.

8. The microwave radiation whole body hyperthermia treatment device according to claim 7, characterized in that: The lower edge of the shielding curtain is provided with a notch-shaped neck cover for covering the patient's neck.

9. The microwave radiation whole body hyperthermia treatment device according to claim 6, characterized in that: A heat-insulating layer is arranged between the side wall shielding layer and the shell, and the heat-insulating layer is attached to the outer surface of the side wall shielding layer.

10. The microwave radiation whole body hyperthermia treatment device according to claim 6, characterized in that: The inner sides of the side wall shielding layer and / or the shielding end plates on both sides are provided with a coating layer.

11. The microwave radiation whole body hyperthermia treatment device according to claim 1, characterized in that: The cabin body of the physiotherapy cabin is assembled by an upper cabin body, a lower cabin body, a first end cover and a second end cover, and the physiotherapy bed is arranged on the lower cabin body.

12. The microwave radiation whole body hyperthermia treatment device according to claim 11, characterized in that: The upper cabin body comprises an upper shell, an upper cabin body bracket and an upper shielding body, wherein the upper shielding body comprises an upper side wall shielding layer, a first upper shielding end plate and a second upper shielding end plate; The lower cabin body comprises a lower shell, a lower cabin body bracket and a lower shielding body, wherein the lower shielding body comprises a lower side wall shielding layer, a first lower shielding end plate and a second lower shielding end plate; The upper shielding body is fixedly connected to the upper cabin body bracket to form a whole, and the lower shielding body is fixedly connected to the lower cabin body bracket to form a whole. The upper and lower wholes are assembled together through a detachable connecting structure. The joint between the upper shielding body and the lower shielding body is sealed, and the upper shell and the lower shell are respectively assembled on the upper and lower wholes through detachable connecting structures.

13. The microwave radiation whole body hyperthermia treatment device according to claim 1, characterized in that: A physiotherapy bed bracket is fixed on the inner wall of the physiotherapy cabin, and the physiotherapy bed is movably assembled on the physiotherapy bed bracket through a guide rail mechanism.

14. The microwave radiation whole body hyperthermia treatment device according to claim 1, characterized in that: A microwave source and a control box are arranged in the base, the microwave source and the control box are electrically connected, and the microwave source is connected to the antenna array through a feeder.

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