CN114917482A - Millimeter wave therapeutic apparatus for prostate - Google Patents
Millimeter wave therapeutic apparatus for prostate Download PDFInfo
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- CN114917482A CN114917482A CN202210722420.5A CN202210722420A CN114917482A CN 114917482 A CN114917482 A CN 114917482A CN 202210722420 A CN202210722420 A CN 202210722420A CN 114917482 A CN114917482 A CN 114917482A
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- 238000006243 chemical reaction Methods 0.000 claims abstract description 37
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- 230000001681 protective effect Effects 0.000 claims abstract description 7
- 238000000034 method Methods 0.000 claims description 23
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- 239000000463 material Substances 0.000 claims description 6
- 230000002238 attenuated effect Effects 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 claims description 4
- -1 polytetrafluoroethylene Polymers 0.000 claims description 4
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 4
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 4
- 229910001369 Brass Inorganic materials 0.000 claims description 3
- 239000010951 brass Substances 0.000 claims description 3
- 230000017525 heat dissipation Effects 0.000 claims description 3
- 238000003780 insertion Methods 0.000 claims description 3
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- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 2
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- 201000007094 prostatitis Diseases 0.000 description 2
- 238000002834 transmittance Methods 0.000 description 2
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- 208000006820 Arthralgia Diseases 0.000 description 1
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N5/00—Radiation therapy
- A61N5/02—Radiation therapy using microwaves
- A61N5/022—Apparatus adapted for a specific treatment
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Abstract
The invention discloses a prostate millimeter wave therapeutic apparatus, which comprises a host machine and an antenna mechanism connected with the host machine on the same axis, wherein the antenna mechanism comprises a circular waveguide, a millimeter wave antenna and an antenna protective cover which are sequentially connected. The host machine comprises a millimeter wave source and a waveform conversion attenuation device, the waveform conversion attenuation device comprises an attenuation unit and a waveform conversion unit which are integrated into a mechanism, the attenuation unit is connected with the millimeter wave source through a flange, the waveform conversion unit is connected with a circular waveguide and is suitable for attenuating the power of millimeter waves emitted by the millimeter wave source to a target value, and the waveform conversion unit is suitable for converting the field pattern of the millimeter waves after power attenuation from TE10 waves in the rectangular waveguide to circularly polarized waves in the circular waveguide so as to provide required millimeter wave output power for the millimeter wave antenna. The prostate therapeutic apparatus can go deep into the prostate cavity to carry out accurate irradiation treatment, and can ensure a larger millimeter wave energy adjustment range under the condition of reducing the size and the diameter.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to a prostate millimeter wave therapeutic apparatus.
Background
Prostate diseases are common frequently-encountered diseases of men, and are clinically manifested as frequent micturition, urgent micturition, unsmooth urination, frequent nocturia and the like, which brings inconvenience and pain to patients. The treatment of prostatitis is divided into several categories such as medicine, operation, instrument rehabilitation treatment, wherein, the millimeter wave therapeutic apparatus belongs to instrument rehabilitation treatment, adopts solid source to emit non-thermal effect low-power millimeter wave with specific parameters, utilizes the millimeter wave weak electromagnetic signal simulating the self regulation and control information of human body to generate a series of physiological biochemical reactions, can control and eliminate inflammatory reactions of various organs, and has remarkable treatment effect on diseases.
The therapeutic apparatus of the existing millimeter wave therapeutic apparatus generally has larger diameter and volume, can not treat the prostate cavity in a targeted way, and can not adjust the power of the existing millimeter wave therapeutic apparatus. Because the existing millimeter wave therapeutic apparatus uses the attenuator and the waveform converter to connect in series through the circuit, if the attenuator is added to realize power adjustment, the size of the millimeter wave system is far beyond the actual requirement, and the millimeter wave therapeutic apparatus cannot be used in actual treatment, and particularly cannot deeply treat narrow prostate cavities.
Therefore, there is a need for a prostate millimeter wave therapeutic apparatus with a suitable diameter and size, which can perform targeted effective treatment on the prostate part, and can improve the antenna and the waveform transformation and attenuation structure while reducing the volume of the apparatus, thereby ensuring the millimeter wave radiation power and the therapeutic effect, so as to solve the technical problems existing in the prior art.
Disclosure of Invention
In view of the above, the present invention has been developed to provide a prostate millimeter wave treatment apparatus that overcomes or at least partially solves the above-mentioned problems, in order to reduce the diameter and volume of the prostate millimeter wave treatment apparatus and to meet the miniaturization requirements of medical equipment.
According to one aspect of the invention, a millimeter wave treatment instrument for prostate comprises a host machine and an antenna mechanism connected with the host machine in the same axial direction, wherein the antenna mechanism comprises a waveguide, a millimeter wave antenna and an antenna protection cover which are sequentially connected, the host machine comprises a millimeter wave source and a waveform conversion attenuation device, the waveform conversion attenuation device comprises an attenuation unit and a waveform conversion unit which are integrated into a whole, the attenuation unit is connected with the millimeter wave source through a flange, the waveform conversion unit is connected with the waveguide, the attenuation unit is suitable for attenuating the power of millimeter waves emitted by the millimeter wave source to a target value, and the waveform conversion unit is suitable for converting the field type of the millimeter waves after power attenuation from TE10 waves in a rectangular waveguide into circularly polarized waves in a circular waveguide so as to provide required millimeter wave output power for the millimeter wave antenna.
The prostate millimeter wave therapeutic apparatus can reduce the diameter and the volume of the apparatus penetrating into the prostate cavity aiming at the characteristic of narrow space in the prostate cavity, can directly act on the focus part, and can accurately and controllably achieve the therapeutic effect. Aiming at the technical problems of mismatching of the impedance of an antenna and a protective medium, large volume of a waveform conversion attenuation device and the like in the existing millimeter wave therapeutic apparatus, the volume of the device can be greatly reduced by integrating a waveform conversion unit and an attenuation sheet into one device, parameters such as the shape, the thickness and the like of an antenna protective cover and the waveform conversion unit are matched and optimized through numerical simulation, and the millimeter wave power attenuation can be ensured to have a large adjusting range under the condition of not changing a power source; the energy loss of millimeter waves can be reduced while the antenna is protected, and the long-term stable work of the millimeter wave antenna is facilitated.
Optionally, the shape, size, position of the millimeter wave attenuation medium of the attenuation unit and the internal shape of the waveform conversion unit are determined when the field pattern, return loss, insertion loss, voltage standing wave ratio, and S parameter of the millimeter wave meet the impedance matching requirement in the simulation process, and the diameters of the antenna structure and the waveform conversion attenuation device are smaller than a predetermined value.
Optionally, the waveform conversion attenuation device further comprises a positioning rod, an adjusting nut and a limiting spring, the positioning rod is connected with the attenuation unit, and the adjusting nut and the limiting spring adjust the position of the attenuation unit through the positioning rod so as to adjust the power attenuation amount of the millimeter waves, so that the millimeter wave power is attenuated to a target value.
The wave mode conversion structure and the adjustable attenuation unit are combined into a device, so that the number of parts is reduced, and the requirements on the performance and the volume of the instrument are met. The volume of the waveform conversion attenuation device is reduced from 13cm in length, 2cm in width and 2cm in height to 4.5cm in length, 2cm in width and 2cm in height, and the attenuation adjustment range reaches 0.5-10 dB.
Optionally, the millimeter wave antenna is a conical horn antenna, the antenna protection cover is made of polytetrafluoroethylene materials, the millimeter wave antenna and the waveguide are made of brass plating materials, and the antenna protection cover completely covers the millimeter wave antenna and the antenna waveguide.
Optionally, an assembly step is arranged between the antenna protection cover and the millimeter wave antenna, the assembly step is used for fixing the relative position between the antenna protection cover and the millimeter wave antenna, the relative position between the antenna protection cover and the millimeter wave antenna is determined according to the field distribution radiated by the millimeter wave antenna, the shape of the antenna protection cover is determined according to the directional diagram of the millimeter wave antenna, and the thickness of the antenna protection cover is determined according to the characteristic impedance matching degree between the millimeter wave antenna and the antenna protection cover in the numerical simulation process.
Optionally, an assembly step is arranged between the antenna protection cover and the millimeter wave antenna, the assembly step is used for fixing the relative position between the antenna protection cover and the millimeter wave antenna, the relative position between the antenna protection cover and the millimeter wave antenna is determined according to the field distribution radiated by the millimeter wave antenna, the shape of the antenna protection cover is determined according to the directional diagram of the millimeter wave antenna, and the thickness of the antenna protection cover is determined according to the characteristic impedance matching degree between the millimeter wave antenna and the antenna protection cover in the numerical simulation process.
Through carrying out the matching adjustment to shape, thickness, position etc. of antenna protection cover, can avoid millimeter wave reflection and energy loss, guarantee antenna emission power to improve the long-term stability of therapeutic instrument, guarantee treatment.
Optionally, in the process of numerical simulation, when the reflection loss amount of the millimeter wave antenna passing through the antenna protection cover is smaller than the preset loss amount, the shape and the thickness of the antenna protection cover conform to the characteristic impedance matching of the millimeter wave at the dielectric interface on the transmission path.
Optionally, the host further includes a housing, a power supply interface, and a heat dissipation module, where the power supply interface is adapted to provide a stable operating voltage for the millimeter wave source through an external dc voltage regulator circuit.
The prostate millimeter wave therapeutic apparatus provided by the scheme has the advantages of compact structure, reduced diameter and volume and capability of ensuring reliable radiation power. Specifically, the wave mode conversion structure and the adjustable attenuation unit are combined into a single component, so that the large attenuation adjusting capacity is kept under the condition of not changing a power source, the volume of the wave mode conversion attenuation device is greatly reduced, and the attenuation adjusting range reaches 0.5-10 dB. The antenna mechanism can go deep into the intracavity, and the length, diameter, shape, transmitting power and the like of the part going deep into the intracavity can be specially designed according to the specific structure of the prostate intracavity part, and the action effect of the instrument can be ensured.
The above description is only an overview of the technical solutions of the present invention, and the present invention can be implemented in accordance with the content of the description so as to make the technical means of the present invention more clearly understood, and the above and other objects, features, and advantages of the present invention will be more clearly understood.
Drawings
Various additional advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
figure 1 shows a schematic diagram of a prostate mmwave treatment apparatus 100 according to an embodiment of the present invention;
fig. 2 shows a schematic configuration of a wave form change attenuating device 140 according to an embodiment of the present invention.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
The millimeter wave therapeutic apparatus is widely used for treating various diseases such as peptic ulcer, dental ulcer, prostatitis, arthralgia, asthma, skin diseases and the like due to small action position and accurate and controllable action position. However, the existing millimeter wave therapeutic apparatus generally has large volume and large diameter, cannot be adjusted adaptively, and cannot go deep into a narrow cavity for accurate treatment. The scheme provides a prostate millimeter wave therapeutic apparatus which can go deep into a prostate cavity to carry out accurate treatment, and the diameter and the volume of the therapeutic apparatus are reduced while the regulating capacity of the millimeter wave attenuation is kept large.
Figure 1 shows a schematic diagram of a prostate mmwave treatment apparatus 100 according to an embodiment of the present invention. As shown in fig. 1, the prostate millimeter wave treatment apparatus 100 comprises a main machine 300 and an antenna mechanism 200 connected with the main machine in the same axial direction, wherein the diameter of the antenna mechanism can be set to be smaller than the minimum diameter in the prostate cavity so as to ensure that the antenna mechanism can go deep into the prostate cavity to perform millimeter wave irradiation treatment. The antenna mechanism 200 comprises a circular waveguide 130, a millimeter wave antenna 110 and an antenna protective cover 120 which are connected in sequence, the antenna protective cover completely covers the millimeter wave antenna and the antenna circular waveguide, and the antenna mechanism 200 can be deeply inserted into the prostate cavity to perform millimeter wave irradiation treatment. The mainframe 300 comprises a millimeter wave source 150 and a waveform conversion attenuation device 140, the waveform conversion attenuation device 140 comprises an attenuation unit and a waveform conversion unit, the attenuation unit and the waveform conversion unit are integrated into a single mechanism, the attenuation unit is suitable for attenuating the millimeter wave power emitted by the millimeter wave source to a target value, and the waveform conversion unit is suitable for converting the power-attenuated millimeter wave pattern from the TE10 wave in the rectangular waveguide to the circularly polarized wave in the circular waveguide so as to provide the millimeter wave antenna with the required millimeter wave output power.
Fig. 2 is a schematic diagram showing the internal structure of the wave form change attenuating device 140 according to one embodiment of the present invention. As shown in fig. 2, the waveform transformation damping device 140 includes a damping unit 142 and a waveform transformation unit 141, the waveform transformation unit 142 is a pipeline having a rectangular-circular transformation structure, one end of the pipeline is connected with a circular waveguide, the other end of the pipeline is connected with the damping unit, and the damping unit 142 is connected with a millimeter wave source through a flange. The attenuation unit 142 may attenuate the millimeter wave power emitted by the millimeter wave source 150 to a target value. In the embodiment of the present invention, the waveform output by the millimeter wave source is a rectangular waveguide, and the waveform conversion unit can convert the field pattern of the millimeter wave after power attenuation from the TE10 wave in the rectangular waveguide to a circularly polarized wave (transverse electromagnetic wave) in the circular waveguide, so as to provide the millimeter wave antenna with the required millimeter wave output power for emission. The millimeter wave source is output as a rectangular waveguide, the power is controlled through an attenuation structure, the waveform is converted through a waveform converter with the characteristics of a square-circle transition structure, the converted waveform is transmitted to the transmitting antenna through the circular waveguide continuously, and the transmitted waveform reaches the treated part through the protective cover after being transmitted from the transmitting antenna.
In order to reduce the diameter and the volume of an instrument, the waveform conversion attenuation device is integrated into a mechanism, most of connecting structures are eliminated, the adjusting mechanism is greatly simplified, meanwhile, in order to enable the performance of the waveform conversion attenuation device to meet the using requirements, the mutual interference between two units is reduced, and the design of the two functional units is improved through configuration optimization and simulation analysis. Specifically, the shape, size, position of the millimeter wave attenuation medium of the attenuation unit and the internal shape of the waveform conversion unit are determined by the field pattern, return loss, insertion loss, voltage standing wave ratio, and S parameter of the millimeter wave in the simulation process when they meet the impedance matching requirements. The voltage standing wave ratio is antinode voltage/node voltage, and the S parameters comprise S12 (reverse transmission coefficient), S21 (forward transmission coefficient), S11 (input reflection coefficient) and S22 (output reflection coefficient). Through the waveform transformation attenuation device, a millimeter wave source enters the attenuation unit from the right side, the power of the emitted millimeter waves is absorbed by an attenuation medium in the attenuation unit, the power is reduced to a target range, then the millimeter waves are continuously transmitted to the left side to enter the waveform transformation unit, and the field pattern of the millimeter waves is transformed from TE10 waves in the rectangular waveguide into circularly polarized waves in the circular waveguide through matching adjustment.
As shown in fig. 2, the waveform conversion attenuating device 140 further includes a positioning rod 143, an adjusting nut 144, and a stopper spring 145. The positioning rod 143 is connected to the attenuation unit 142, and the adjusting nut 144 and the limiting spring 145 adjust the position of the attenuation unit 142 via the positioning rod 143, so as to adjust the millimeter wave power attenuation amount, so that the millimeter wave power is attenuated to a target value, and further, the millimeter wave power attenuation amount is adjusted. The improved waveform conversion attenuation device eliminates most connecting structures, greatly simplifies an adjusting mechanism and the like, reduces the required volume to 4.5cm in length, 2cm in width and 2cm in height, and can meet the use requirement, and the adjustment range of the attenuation unit to the millimeter wave power attenuation is 0.5-10 dB.
Because the prostate millimeter wave therapeutic apparatus needs the antenna mechanism to go deep into the cavity, the effective radiation area of the antenna is large and the power is large because of the treatment. The antenna protection cover 120 can be made of polytetrafluoroethylene materials with good biocompatibility and millimeter wave transmittance, the millimeter wave antenna and the waveguide can be made of brass plating materials, and the antenna protection cover can ensure the transmittance of millimeter waves while protecting the structure of the antenna.
In the antenna mechanism 200, an assembly step is provided between the antenna protection cover 120 and the millimeter wave antenna 110, the assembly step may be used to fix a relative position between the antenna protection cover and the millimeter wave antenna, the relative position between the antenna protection cover and the millimeter wave antenna may be determined according to field distribution radiated by the millimeter wave antenna, a shape of the antenna protection cover may be determined according to a pattern diagram of the millimeter wave antenna, and a thickness of the antenna protection cover may be determined according to a characteristic impedance matching degree between the millimeter wave antenna and the antenna protection cover in a numerical simulation process. In the numerical simulation process, when the waveform reflection loss of the millimeter wave antenna passing through the antenna protection cover is less than the preset loss, determining that the shape and the thickness of the antenna protection cover conform to the characteristic impedance matching between the millimeter wave antenna and the antenna protection cover. The antenna protection cover can be made of a polytetrafluoroethylene material with biocompatibility, and transparency of the antenna protection cover to the millimeter wave antenna can be guaranteed.
Through carrying out the matching adjustment to shape, thickness, position etc. of antenna protection cover, can avoid reflection and the energy loss of millimeter wave, guarantee antenna emission power to improve the long-term stability of therapeutic instrument, guarantee treatment.
As shown in fig. 1, the host 300 further includes a housing 160, a power supply interface 170, and a heat dissipation module 180, and control leads thereof may be led out from the tail of the host. An external dc voltage regulator circuit may be connected via the power supply interface 170 to provide a stable operating voltage for the millimeter wave source 150. The millimeter wave therapeutic apparatus carries out noninvasive and painless treatment on the prostate cavity part, the diameter of the antenna structure is designed according to the diameter in the prostate cavity, the antenna part can be ensured to go deep into the prostate cavity for treatment, and the structural design can meet the requirement of the size miniaturization of the millimeter wave therapeutic apparatus by the human body cavity.
In the working process of the prostate millimeter wave therapeutic apparatus, the power supply interface supplies working voltage to the millimeter wave source through the direct current voltage stabilizing circuit provided by the external power supply, the millimeter wave source generates millimeter wave oscillation in the resonant cavity, the millimeter wave oscillation is stabilized at a target frequency and power after being screened by the resonant cavity and is transmitted to the waveform conversion attenuation device, the millimeter wave power is reduced to a target power range, meanwhile, the waveform of the millimeter wave.
Through the scheme, the prostate millimeter wave therapeutic apparatus is compact in structure, and reliable radiation power can be guaranteed while the diameter and the size are reduced. Specifically, the mode conversion structure and the adjustable attenuation unit are integrated into a mechanism, so that the large attenuation adjusting capacity is kept under the condition of not changing a power source, the volume of the waveform conversion attenuation device is greatly reduced, and the attenuation adjusting range reaches 0.5-10 dB. The antenna mechanism can go deep into the intracavity, and the length, diameter, shape, transmitting power and the like of the part going deep into the intracavity can be specially designed according to the specific structure of the prostate intracavity part, and the action effect of the instrument can be ensured.
In the description provided herein, numerous specific details are set forth. It is understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.
Similarly, it should be appreciated that in the foregoing description of exemplary embodiments of the invention, various features of the invention are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the disclosure and aiding in the understanding of one or more of the various inventive aspects. However, the disclosed method should not be interpreted as reflecting an intention that: rather, the invention as claimed requires more features than are expressly recited in each claim. Rather, as the following claims reflect, inventive aspects lie in less than all features of a single foregoing disclosed embodiment. Thus, the claims following the detailed description are hereby expressly incorporated into this detailed description, with each claim standing on its own as a separate embodiment of this invention.
Those skilled in the art will appreciate that the modules or units or components of the devices in the examples disclosed herein may be arranged in a device as described in this embodiment or alternatively may be located in one or more devices different from the devices in this example. The modules in the foregoing examples may be combined into one module or may be further divided into multiple sub-modules.
Those skilled in the art will appreciate that the modules in the device in an embodiment may be adaptively changed and disposed in one or more devices different from the embodiment. The modules or units or components of the embodiments may be combined into one module or unit or component, and furthermore they may be divided into a plurality of sub-modules or sub-units or sub-components. All of the features disclosed in this specification (including any accompanying claims, abstract and drawings), and all of the processes or elements of any method or apparatus so disclosed, may be combined in any combination, except combinations where at least some of such features and/or processes or elements are mutually exclusive. Each feature disclosed in this specification (including any accompanying claims, abstract and drawings) may be replaced by alternative features serving the same, equivalent or similar purpose, unless expressly stated otherwise.
Furthermore, those skilled in the art will appreciate that while some embodiments herein include some features included in other embodiments, rather than other features, combinations of features of different embodiments are meant to be within the scope of the invention and form different embodiments. For example, in the following claims, any of the claimed embodiments may be used in any combination.
Additionally, some of the embodiments are described herein as a method or combination of method elements that can be implemented by a processor of a computer system or by other means of performing the described functions. A processor having the necessary instructions for carrying out the method or method elements thus forms a means for carrying out the method or method elements. Further, the elements of the apparatus embodiments described herein are examples of the following apparatus: the apparatus is used to implement the functions performed by the elements for the purpose of carrying out the invention.
As used herein, unless otherwise specified the use of the ordinal adjectives "first", "second", "third", etc., to describe a common object, merely indicate that different instances of like objects are being referred to, and are not intended to imply that the objects so described must be in a given sequence, either temporally, spatially, in ranking, or in any other manner.
While the invention has been described with respect to a limited number of embodiments, those skilled in the art, having benefit of this description, will appreciate that other embodiments can be devised which do not depart from the scope of the invention as described herein. Moreover, it should be noted that the language used in the specification has been principally selected for readability and instructional purposes, and may not have been selected to delineate or circumscribe the inventive subject matter. Accordingly, many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the appended claims. The present invention has been disclosed in an illustrative rather than a restrictive sense with respect to the scope of the invention, as defined in the appended claims.
Claims (7)
1. A prostate millimeter wave therapeutic apparatus is characterized by comprising a host machine and an antenna mechanism connected with the host machine in the same axial direction, the antenna mechanism comprises a circular waveguide, a millimeter wave antenna and an antenna protective cover which are sequentially connected, the host comprises a millimeter wave source and a waveform conversion attenuation device, the waveform conversion attenuation device comprises an attenuation unit and a waveform conversion unit which are integrated into a whole, the attenuation unit is connected with the millimeter wave source through a flange, the waveform transformation unit is connected with the circular waveguide, the attenuation unit is suitable for attenuating the power of millimeter waves emitted by the millimeter wave source to a target value, and the waveform transformation unit is suitable for transforming the field pattern of the millimeter waves after the power attenuation from TE10 waves in the rectangular waveguide into circularly polarized waves in the circular waveguide so as to provide the millimeter wave antenna with required millimeter wave output power.
2. The millimeter wave treatment apparatus for prostate according to claim 1, wherein the shape, size, position of the millimeter wave attenuation medium of the attenuation unit and the internal shape of the waveform transformation unit are determined by the field pattern, return loss, insertion loss, voltage standing wave ratio, and S-parameter of the millimeter wave in the simulation process when they meet the impedance matching requirement, and the diameters of the antenna structure and the waveform transformation unit are smaller than a predetermined value.
3. The millimeter wave treatment instrument for prostate according to claim 2, characterized in that the waveform transformation attenuation device further comprises a positioning rod, an adjusting nut and a limiting spring, the positioning rod is connected with the attenuation unit, the adjusting nut and the limiting spring adjust the position of the attenuation unit through the positioning rod, so as to adjust the power attenuation of the millimeter waves, and the millimeter wave power is attenuated to a target value.
4. The prostate millimeter wave treatment apparatus according to claim 1, wherein the millimeter wave antenna is a conical horn antenna, the antenna protection cover is made of polytetrafluoroethylene, the millimeter wave antenna and the waveguide are made of brass plating material, and the antenna protection cover completely covers the millimeter wave antenna and the antenna waveguide.
5. The prostate millimeter wave treatment apparatus according to claim 4, wherein an assembly step is provided between the antenna protection cover and the millimeter wave antenna, the assembly step is used to fix the relative position between the antenna protection cover and the millimeter wave antenna, the relative position between the antenna protection cover and the millimeter wave antenna is determined according to the field distribution radiated by the millimeter wave antenna, the shape of the antenna protection cover is determined according to the directional diagram of the millimeter wave antenna, and the thickness of the antenna protection cover is determined according to the characteristic impedance matching degree between the millimeter wave antenna and the antenna protection cover in the numerical simulation process.
6. The millimeter wave prostate treatment device according to claim 5, wherein in the numerical simulation process, when the reflection loss of the millimeter wave antenna passing through the antenna protection cover is less than the preset loss, the shape and thickness of the antenna protection cover conform to the characteristic impedance matching of the millimeter wave at the interface of the medium on the transmission path.
7. The millimeter wave prostate treatment device according to claim 1, wherein the host computer further comprises a housing, a power supply interface and a heat dissipation module, the power supply interface is adapted to provide a stable operating voltage for the millimeter wave source via an external dc voltage regulator circuit.
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| CN202210722420.5A CN114917482B (en) | 2022-06-24 | 2022-06-24 | Millimeter wave therapeutic apparatus for prostate |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114899566A (en) * | 2022-07-08 | 2022-08-12 | 北京中成康富科技股份有限公司 | Waveform transformation attenuation device and millimeter wave therapeutic instrument |
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| US6233490B1 (en) * | 1999-02-09 | 2001-05-15 | Kai Technologies, Inc. | Microwave antennas for medical hyperthermia, thermotherapy and diagnosis |
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| CN114917482B (en) | 2023-12-01 |
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