Local thermochemotherapy device for traditional Chinese medicine tumors

Abstract

The invention provides a local thermochemotherapy device for traditional Chinese medicine tumors, and belongs to the technical field of medical instruments, the local thermochemotherapy device for traditional Chinese medicine tumors comprises a treatment host, a driving base, a lifting support, a thermotherapy system and a temperature control system; the driving base is of a rectangular structure, universal wheels are fixedly installed at the four corners of the bottom of the driving base, lifting supports are fixedly installed at the four corners of the upper surface of the driving base, and the upper ends of the four lifting supports are fixedly connected with a treatment host; the treatment main machine comprises a main body shell, a lining layer and a blocking layer, the main body shell is of a cylindrical structure and is provided with an upward opening, the lining layer and the blocking layer are sequentially arranged in the main body shell from top to bottom, the lining layer is made of a flexible heat conduction material, and the blocking layer is made of a heat insulation material; the problems that an existing thermochemotherapy device is uneven in temperature distribution and low in heat control precision can be solved.

Description

Technical Field

[0001] The present invention belongs to the technical field of medical devices, and in particular, relates to a local thermal chemotherapy device for traditional Chinese medicine tumors. Background Art

[0002] With the continuous development of traditional Chinese medicine tumor treatment technology, local thermochemotherapy has been widely used as an important auxiliary treatment method. Existing local thermochemotherapy devices mainly heat the lesion site to enhance the body's immunity and inhibit tumor growth.

[0003] At present, the common thermochemotherapy devices on the market are mainly divided into three categories: single-point contact heating devices, planar radiation heating devices and multi-point array heating devices. Single-point contact heating devices have a simple structure and a limited heating range, making it difficult to cover a large treatment area. Planar radiation heating devices use a large-area heating plate design, but due to the single heat transfer method, it is easy to cause the surface temperature to be too high and the deep temperature to be insufficient. Multi-point array heating devices are composed of multiple independently controlled heating units. The system is complex, costly, and difficult to maintain.

[0004] In actual clinical applications, existing thermal chemotherapy devices generally have the following problems: first, the temperature control accuracy is insufficient, making it difficult to achieve precise heating of specific areas; second, the heat distribution is uneven, which can easily cause local temperatures to be too high or too low; third, the equipment structure is complex and inconvenient to operate and maintain; finally, the temperature stability during the treatment process is poor, making it difficult to ensure a sustained and stable treatment effect. Summary of the invention

[0005] In view of this, the present invention provides a local thermal chemotherapy device for traditional Chinese medicine tumors, which can solve the problems of uneven temperature distribution and low heat control accuracy in existing thermal chemotherapy devices.

[0006] The present invention is achieved in that:

[0007] The present invention provides a local thermal chemotherapy device for traditional Chinese medicine tumors, which includes: a treatment host, a driving base, a lifting bracket, a thermal therapy system, and a temperature control system; the driving base is a rectangular structure, and universal wheels are fixedly installed at the four corners of the bottom of the driving base, and lifting brackets are fixedly installed at the four corners of the upper surface of the driving base, and the upper ends of the four lifting brackets are fixedly connected to the treatment host; the treatment host includes a main body shell, an inner lining layer, and a barrier layer, the main body shell is a cylindrical structure and opens upward, and the inner lining layer and the barrier layer are sequentially arranged inside the main body shell from top to bottom, The lining layer is made of a flexible heat-conductive material, and the barrier layer is made of an insulating material; a guide groove is provided on one side of the treatment host, a spiral shaft is rotatably connected in the guide groove, and a return spring is arranged between the spiral shaft and the inner wall of the guide groove; a transmission frame is fixedly sleeved on the outside of the spiral shaft, and a thermal therapy system is fixedly connected to one end of the transmission frame; the thermal therapy system includes a main heating component and an auxiliary heating component; the main heating component is in a rectangular structure, and an auxiliary heating component is rotatably connected to an edge position of one side of the main heating component, and a temperature control system is arranged at the other end of the auxiliary heating component.

[0008] The technical effects of a local thermochemotherapy device for traditional Chinese medicine tumors provided by the present invention are as follows: The local thermochemotherapy device for traditional Chinese medicine tumors proposed by the present invention effectively solves the problem of insufficient temperature control accuracy in the prior art through the innovative collaborative design of the main and auxiliary heating components. The main heating component is responsible for providing basic heat, and the auxiliary heating component performs fine adjustment. The two work together to achieve precise temperature control. Through actual testing, the temperature control accuracy of this device can reach ±0.5℃, which is far better than the ±2℃ control accuracy of the prior art.

[0009] In terms of heat distribution uniformity, the main and auxiliary heating component linkage mechanism adopted in the present invention, combined with a precise temperature control system, can achieve highly uniform temperature distribution within the treatment area. Test data show that the temperature uniformity within the treatment area can reach ±1°C, while the existing technology is generally above ±3°C. This highly uniform temperature distribution significantly improves the treatment effect and reduces the risk of local burns.

[0010] The modular design adopted by the present invention not only simplifies the device structure, but also greatly improves the convenience of maintenance. All key components adopt standardized design, which is convenient for replacement and maintenance. At the same time, by optimizing the mechanical transmission structure, the complexity of the system is reduced and the operation reliability is improved. The average trouble-free operation time of the equipment exceeds 5,000 hours, and the maintenance cost is reduced by more than 40% compared with the existing technology.

[0011] In terms of temperature stability during the treatment process, the present invention achieves long-term stable temperature control through innovative temperature control algorithms and mechanical structure design. In an 8-hour test, the temperature fluctuation was controlled within the range of ±0.3°C, while the existing technology is generally above ±1°C. This high degree of temperature stability provides patients with a more comfortable treatment experience while also ensuring the consistency of the treatment effect.

[0012] On the basis of the above technical solution, the local thermal chemotherapy device for tumors in traditional Chinese medicine of the present invention can also be improved as follows:

[0013] Among them, the lifting bracket includes an outer tube body and an inner tube body; the outer tube body is a hollow structure and is fixedly installed on the upper surface of the driving base, the inner tube body is slidably connected to the inside of the outer tube body, and the top of the inner tube body is fixedly connected to the bottom of the treatment host; a lifting groove is opened on one side of the outer tube body, a threaded column is rotatably connected in the lifting groove, and a lifting block is threadedly connected to the outer side of the threaded column, and one end of the lifting block passes through the lifting groove and is fixedly connected to the inner tube body; a lifting drive motor is fixedly installed on the bottom of the outer tube body, and the output end of the lifting drive motor is fixedly connected to the threaded column.

[0014] Furthermore, the main heating component includes a heating shell and a heating core; the interior of the heating shell is a closed cavity structure, the interior of the heating shell is provided with a heating core, the outside of the heating core is wrapped with a heating wire, and the upper surface of the heating shell is provided with a heat conducting plate, and the heat conducting plate is made of a metal material with good thermal conductivity; a heat dissipation hole is opened on one side of the heating shell, and a protective cover is provided at the bottom of the heating shell.

[0015] Furthermore, the auxiliary heating component includes an auxiliary heating shell and an auxiliary heating element; the auxiliary heating shell is in a long strip structure, an auxiliary heating element is arranged inside the auxiliary heating shell, a heating wire is wound around the outside of the auxiliary heating element, one end of the auxiliary heating shell is rotatably connected to the main heating component through a rotating shaft, and a torsion spring is sleeved on the outside of the rotating shaft.

[0016] Furthermore, the temperature control system includes a temperature probe and an induction shell; the temperature probe is arranged at the outer end of the auxiliary heating component, the induction shell is fixedly connected to the bottom of the temperature probe, and a temperature measuring element is arranged inside the induction shell; the induction shell is made of elastic material, and a protective layer is arranged on the outer surface of the induction shell.

[0017] Furthermore, the inner walls on both sides of the guide groove are provided with limit grooves, both ends of the transmission frame are provided with sliding blocks matching the limit grooves, a protective sleeve is provided outside the transmission frame, and a buffer pad is provided between the protective sleeve and the transmission frame.

[0018] Furthermore, an edge protection ring is arranged at the top edge of the treatment main unit, the edge protection ring is made of a soft material, and an anti-slip pattern is arranged on the inner side of the edge protection ring.

[0019] Furthermore, a metal mesh layer is arranged outside the barrier layer, a guide channel is formed between the metal mesh layer and the main body shell, and reinforcing ribs are arranged on the inner wall of the guide channel.

[0020] Furthermore, a protective layer is provided on the outer surface of the main shell, the protective layer is made of high temperature resistant material, and an anti-corrosion coating is sprayed on the surface of the protective layer.

[0021] Furthermore, the geometric center distance between the main and auxiliary heating components, the heating area and the temperature gradient are defined by a set of relationship definition equations.

[0022] The relationship defines the following set of equations:

[0023] 1. The geometric center distance between the main and auxiliary heating components and the proportional relationship between the heating area:

[0024]

[0025] Where d is the geometric center distance between the main and auxiliary heating components (mm), h is the height of the main heating component (mm), A m Heating area of ​​main heating component (mm 2 ),A s Heating area of ​​auxiliary heating element (mm 2 ),θ is the angle between the main and auxiliary heating components (rad), k1, k2 are material related coefficients, ξ1 is the correction coefficient.

[0026] 2. Temperature gradient correlation equation of main and auxiliary heating components:

[0027]

[0028] Where T is the temperature at any point (°C), r is the distance from the center of the main heating component (mm), and T m is the surface temperature of the main heating component (℃), T s is the surface temperature of the auxiliary heating component (℃), L is the length of the center line of the main and auxiliary heating components (mm), λ, α, β are the thermal conductivity correlation coefficients, n is the temperature attenuation index, and ξ2 is the correction coefficient.

[0029] The parameter acquisition method is as follows:

[0030] 1.A m ,A s Obtained through actual measurement: Use a laser rangefinder to measure the length and width of the main and auxiliary heating components; calculate the actual contact area.

[0031] 2.T m ,T s Real-time data collection through temperature sensors: high-precision thermocouples are installed on the surfaces of the main and auxiliary heating components to collect steady-state operating temperatures.

[0032] 3. k1, k2, λ, α, β, and n are calibrated through experiments: building a standard test platform; collecting data under different working conditions; and fitting them using the least squares method.

[0033] Equation principle explanation:

[0034] 1. The geometric relationship equation takes into account the following factors: the square root of the area ratio reflects the linear scale ratio of the heating range; the angle term takes into account the spatial position relationship; and the correction coefficient compensates for manufacturing errors.

[0035] 2. The temperature gradient equation takes into account the following factors: the exponential term reflects the attenuation law of temperature with distance; the sinusoidal term describes the periodic temperature fluctuations; and the -power term characterizes the temperature coupling effect of the main and auxiliary heating components.

[0036] Compared with the prior art, the beneficial effect of a local thermochemotherapy device for TCM tumors provided by the present invention is: the local thermochemotherapy device for TCM tumors proposed by the present invention effectively solves the problem of insufficient temperature control accuracy in the prior art through the innovative collaborative design of the main and auxiliary heating components. The main heating component is responsible for providing basic heat, and the auxiliary heating component performs fine adjustment. The two work together to achieve precise temperature control. Through actual testing, the temperature control accuracy of this device can reach ±0.5℃, which is far better than the ±2℃ control accuracy of the prior art.

[0037] In terms of heat distribution uniformity, the main and auxiliary heating component linkage mechanism adopted in the present invention, combined with a precise temperature control system, can achieve highly uniform temperature distribution within the treatment area. Test data show that the temperature uniformity within the treatment area can reach ±1°C, while the existing technology is generally above ±3°C. This highly uniform temperature distribution significantly improves the treatment effect and reduces the risk of local burns.

[0038] The modular design adopted by the present invention not only simplifies the device structure, but also greatly improves the convenience of maintenance. All key components adopt standardized design, which is convenient for replacement and maintenance. At the same time, by optimizing the mechanical transmission structure, the complexity of the system is reduced and the operation reliability is improved. The average trouble-free operation time of the equipment exceeds 5,000 hours, and the maintenance cost is reduced by more than 40% compared with the existing technology.

[0039] In terms of temperature stability during the treatment process, the present invention achieves long-term stable temperature control through innovative temperature control algorithms and mechanical structure design. In an 8-hour test, the temperature fluctuation was controlled within the range of ±0.3°C, while the existing technology is generally above ±1°C. This high degree of temperature stability provides patients with a more comfortable treatment experience while also ensuring the consistency of the treatment effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative labor.

[0041] Figure 1 It is a schematic diagram of the structure of a local thermal chemotherapy device for traditional Chinese medicine tumors;

[0042] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0043] 10. Treatment host; 11. Main shell; 111. Protective layer; 12. Lining layer; 13. Barrier layer; 131. Metal mesh layer; 14. Guide groove; 15. Screw shaft; 16. Transmission frame; 17. Edge protection ring; 20. Driving base; 21. Universal wheel; 30. Lifting bracket; 31. Outer tube body; 32. Inner tube body; 33. Lifting groove; 34. Threaded column; 35. Lifting block; 36. Driving motor; 40. Hyperthermia system; 41. Main heating component; 411. Heating shell; 412. Heating core; 42. Auxiliary heating component; 421. Auxiliary heating shell; 422. Auxiliary heating element; 43. Heating wire; 50. Temperature control system; 51. Temperature probe; 52. Induction shell. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical solution and advantages of the embodiments of the present invention more clear, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0045] like Figure 1As shown, it is an embodiment of a local thermal chemotherapy device for tumors in traditional Chinese medicine provided by the present invention. In this embodiment, it includes: a treatment host 10, a driving base 20, a lifting bracket 30, a thermal therapy system 40, and a temperature control system 50; the driving base is a rectangular structure, and universal wheels are fixedly installed at the four corners of the bottom of the driving base, and lifting brackets are fixedly installed at the four corners of the upper surface of the driving base, and the upper ends of the four lifting brackets are fixedly connected to the treatment host; the treatment host includes a main shell 11, an inner lining layer 12, and a barrier layer 13. The main shell is a cylindrical structure with an opening upward, and the inside of the main shell is from top to bottom. An inner lining layer and a barrier layer are arranged in sequence from bottom to top, the inner lining layer is made of a flexible heat-conducting material, and the barrier layer is made of a heat-insulating material; a guide groove 14 is opened on one side of the treatment host, a spiral shaft 15 is rotatably connected in the guide groove, and a return spring is arranged between the spiral shaft and the inner wall of the guide groove; a transmission frame 16 is fixedly sleeved on the outside of the spiral shaft, and a thermal therapy system is fixedly connected to one end of the transmission frame; the thermal therapy system includes a main heating component 41 and an auxiliary heating component 42; the main heating component is in a rectangular structure, and an auxiliary heating component is rotatably connected to the edge of one side of the main heating component, and a temperature control system is arranged at the other end of the auxiliary heating component.

[0046] Among them, in the above technical scheme, the lifting bracket includes an outer tube body 31 and an inner tube body 32; the outer tube body is a hollow structure and is fixedly installed on the upper surface of the driving base, the inner tube body is slidably connected inside the outer tube body, and the top of the inner tube body is fixedly connected to the bottom of the treatment host; a lifting groove 33 is opened on one side of the outer tube body, a threaded column 34 is rotatably connected in the lifting groove, and a lifting block 35 is threadedly connected to the outer side of the threaded column, and one end of the lifting block passes through the lifting groove and is fixedly connected to the inner tube body; a lifting drive motor 36 is fixedly installed at the bottom of the outer tube body, and the output end of the lifting drive motor is fixedly connected to the threaded column.

[0047] Furthermore, in the above technical solution, the main heating component includes a heating shell 411 and a heating core 412; the interior of the heating shell is a closed cavity structure, the interior of the heating shell is provided with a heating core, the outside of the heating core is wrapped with a heating wire 43, and the upper surface of the heating shell is provided with a heat conducting plate, and the heat conducting plate is made of a metal material with good thermal conductivity; a heat dissipation hole is opened on one side of the heating shell, and a protective cover is provided at the bottom of the heating shell.

[0048] Furthermore, in the above technical solution, the auxiliary heating component includes an auxiliary heating shell 421 and an auxiliary heating element 422; the auxiliary heating shell is in a long strip structure, an auxiliary heating element is arranged inside the auxiliary heating shell, a heating wire 43 is wound around the outside of the auxiliary heating element, one end of the auxiliary heating shell is rotatably connected to the main heating component through a rotating shaft, and a torsion spring is sleeved on the outside of the rotating shaft.

[0049] Furthermore, in the above technical solution, the temperature control system includes a temperature probe 51 and a sensing shell 52; the temperature probe is arranged at the outer end of the auxiliary heating assembly, the sensing shell is fixedly connected to the bottom of the temperature probe, and a temperature measuring element is arranged inside the sensing shell; the sensing shell is made of elastic material, and a protective layer 111 is arranged on the outer surface of the sensing shell.

[0050] Furthermore, in the above technical solution, limiting grooves are provided on the inner walls on both sides of the guide groove, sliding blocks matching the limiting grooves are provided at both ends of the transmission frame, a protective sleeve is provided outside the transmission frame, and a buffer pad is provided between the protective sleeve and the transmission frame.

[0051] Furthermore, in the above technical solution, an edge protection ring 17 is arranged at the top edge of the treatment main unit. The edge protection ring is made of soft material, and anti-slip grooves are arranged on the inner side of the edge protection ring.

[0052] Furthermore, in the above technical solution, a metal mesh layer 131 is arranged outside the barrier layer, a guide channel is formed between the metal mesh layer and the main shell, and reinforcing ribs are arranged on the inner wall of the guide channel.

[0053] Furthermore, in the above technical solution, a protective layer 111 is provided on the outer surface of the main shell, the protective layer is made of high temperature resistant material, and an anti-corrosion coating is sprayed on the surface of the protective layer.

[0054] Furthermore, in the above technical solution, the geometric center distance between the main and auxiliary heating components, the heating area and the temperature gradient are limited by a set of relationship limiting equations.

[0055] The following is a description of a specific embodiment of the device of the present invention:

[0056] 1. Overview of the overall structure: The main structure of the local thermal chemotherapy device for tumors in traditional Chinese medicine of the present invention includes a treatment host, a driving base, a lifting bracket, a thermal therapy system and a temperature control system. Each component forms a complete treatment system through precise mechanical and electrical connections. The overall height of the equipment is controlled within the range of 1800 to 2000 mm, the floor area does not exceed 1200 x 1000 mm, and the total weight of the equipment is controlled within 200 kg.

[0057] 2. Treatment host structure: The treatment host adopts a cylindrical structure design with a diameter range of 700 to 900 mm and a height of 500 to 700 mm. The main shell is made of 304 stainless steel with a wall thickness of 2.5 to 3.5 mm. The shell surface is sandblasted and the surface roughness Ra value is controlled between 1.6 and 3.2 microns. The shell is equipped with three functional structures: lining layer, barrier layer and metal mesh layer.

[0058] The inner lining layer is made of aluminum-based composite material with a thermal conductivity of not less than 0.8 watts per meter Kelvin, and the thickness is 1.8 to 2.2 mm. The surface of the inner lining layer is anodized, and the thickness of the oxide layer is 0.015 to 0.025 mm. The inner lining layer and the main shell are filled with thermal conductive gel with a thermal conductivity greater than 2.0 watts per meter Kelvin, and the thickness of the gel layer is 0.4 to 0.6 mm.

[0059] The barrier layer is made of silicone rubber material with a temperature resistance of not less than 250 degrees Celsius, a thickness range of 4.5 to 5.5 mm, and a hardness of 65 to 75 degrees Shore A. The outer surface of the barrier layer is covered with a 316L stainless steel wire woven mesh layer with a mesh diameter of 0.2 mm and a mesh size of 0.8 to 1.2 mm.

[0060] 3. Driving base structure: The driving base adopts a rectangular structure with a length of 950 to 1050 mm, a width of 750 to 850 mm, and a height of 90 to 110 mm. The main body of the base is made of aluminum alloy 6061 and is made using an integral welding process. Self-locking medical-grade universal wheels are installed at the four corners of the base, with a wheel diameter of 70 to 80 mm, and a single wheel load-bearing capacity of not less than 80 kg.

[0061] The surface of the base is sprayed with epoxy resin powder, and the coating thickness is 60 to 80 microns. The base is equipped with reinforcing ribs inside, adopting an I-shaped structure, and the thickness of the rib plate is 4 mm. The connection between the base and the lifting bracket adopts a flange structure with a thickness of 12 mm and is connected by M10 high-strength bolts.

[0062] 4. Lifting bracket structure: The lifting bracket is composed of four columns, each column contains an outer tube body and an inner tube body. The outer tube body is a 100 mm x 100 mm square tube with a wall thickness of 4 mm and is made of Q235B steel. The inner tube body is a 90 mm x 90 mm square tube with a wall thickness of 3 mm and is made of Q235B steel. The gap between the inner and outer tube bodies is 2.5 mm and is filled with polytetrafluoroethylene sliders.

[0063] The lifting mechanism adopts ball screw transmission, the screw diameter is 12 mm, the lead is 2 mm, and the accuracy level is C5. The screw is made of GCr15 bearing steel, which has been quenched and tempered to a hardness of HRC58 to 62. The lifting drive adopts a 200-watt servo motor with a rated speed of 1500 rpm and is equipped with a 1:10 reducer.

[0064] 5. Structure of the thermal therapy system: The thermal therapy system consists of a main heating component and a secondary heating component. The main heating component adopts a rectangular structure with a size of 200 x 150 x 60 mm. The heating shell is made of high-purity copper material with a purity of 99.99% and a wall thickness of 3 mm. The internal heating core is made of alumina ceramic-based composite material and embedded with a nickel-chromium alloy heating wire with a diameter of 0.5 mm.

[0065] The geometric relationship between the main heating component and the auxiliary heating component satisfies the following limiting equation:

[0066] Among them, k1 ranges from 0.8 to 1.2, k2 ranges from 0.3 to 0.5, and ξ1 is a correction coefficient of 0.1 to 0.2. m is 30000 square millimeters, A s When the area is 3000 square millimeters, the ratio of d to h should be controlled between 1.5 and 2.0.

[0067] The heat conducting plate of the main heating component is made of graphene composite material with a thickness of 0.8 to 1.2 mm and a thermal conductivity of not less than 1200 watts per meter Kelvin. The heat dissipation holes are arranged at equal intervals with a hole diameter of 3 mm and a total of 12 holes. The protective cover is made of anodized aluminum material with a thickness of 1.5 mm.

[0068] The auxiliary heating component adopts a long strip structure with a size of 100 x 30 x 20 mm. The shell is made of AL6061 aluminum alloy with a wall thickness of 2 mm. The internal auxiliary heating element is made of alumina ceramic, and the surface is coated with a 0.1 mm thick nano-silver conductive layer. The heating wire is made of 0.3 mm diameter constantan wire, the winding method is spiral, and the turn spacing is 0.8 mm.

[0069] 6. Temperature control system structure: The temperature control system includes a temperature probe, a sensing housing and a control circuit. The temperature probe uses a Class A PT100 platinum resistor with an accuracy of ±0.15 degrees Celsius and a response time of less than 3 seconds. The probe housing is made of 316L stainless steel with a wall thickness of 0.3 mm.

[0070] The temperature field distribution satisfies the following relationship:

[0071] Among them, λ ranges from 0.5 to 0.8, α ranges from 0.02 to 0.05, β ranges from 0.1 to 0.2, n ranges from 2.0 to 2.5, and ξ2 is a correction coefficient from 0.05 to 0.1.

[0072] 7. Connection structure: All bolt connections are made of 304 stainless steel with a strength level of no less than 8.8. The thread fit is H7 / g6. Important parts use locking structures, including anti-loosening washers and locking nuts. The bearings of moving parts are NSK or SKF brands, using double-row angular contact ball bearings.

[0073] 8. Sealing structure: The seal of the moving parts adopts a double-layer labyrinth structure, with the inner layer being a nitrile rubber seal ring and the outer layer being a polytetrafluoroethylene dust ring. The static seal adopts a food-grade silicone seal ring with a hardness of 50 degrees Shore A. The guide rail seal adopts a corrugated protective cover made of PU-coated nylon cloth.

[0074] 9. Surface treatment: The surfaces of metal parts need to be treated. Aluminum alloy parts are anodized, with an oxide layer thickness of 15 to 20 microns and a hardness of not less than HV400. Stainless steel parts are electrolytically polished, with a surface roughness Ra of no more than 0.4 microns. The surface of copper parts is nickel-chromium plated, with a coating thickness of 8 to 12 microns.

[0075] 10. Assembly requirements: 1. The flatness of all mating surfaces must not exceed 0.02 mm. 2. The coaxiality error of the bearing seat must not exceed 0.01 mm. 3. The parallelism error of the guide rail must not exceed 0.02 mm per meter. 4. The torque value of the bolt connection must be in accordance with the standard, and torque marks must be made on important parts. 5. Special grease must be applied when assembling the seal ring.

[0076] The formulation of these specific implementation parameters and requirements is based on a large amount of experimental data and clinical application experience, which can ensure the safety, reliability and therapeutic effect of the equipment. In actual production, appropriate adjustments can be made within the above parameter range according to specific needs, but the overall performance indicators must meet the requirements. At the same time, the selection of all materials must comply with relevant medical device standards to ensure biocompatibility and safety.

[0077] Embodiment 1:

[0078] The local thermochemotherapy device for traditional Chinese medicine tumors in this embodiment mainly includes a treatment host, a driving base, a lifting bracket, a thermotherapy system and a temperature control system. The treatment host is composed of a main body shell, an inner lining layer and a barrier layer. The main body shell has a diameter of 800 mm and a height of 600 mm. It is made of 304 stainless steel and has a wall thickness of 3 mm. The inner surface of the main body shell is coated with a temperature-resistant coating with a thickness of 0.2 mm.

[0079] The inner lining is made of aluminum-based composite material with a thermal conductivity of 0.85 watts per meter Kelvin, with a thickness of 2 mm, and the surface is anodized with an oxide layer thickness of 0.02 mm. A thermal conductive gel is provided between the inner lining and the main shell, with a gel layer thickness of 0.5 mm and a thermal conductivity of 2.5 watts per meter Kelvin.

[0080] The barrier layer is made of silicone rubber material with a temperature resistance of 300 degrees Celsius, a thickness of 5 mm, and a surface hardness of 70 degrees Shore A. The outer surface of the barrier layer is covered with a metal mesh layer, which is woven with 316L stainless steel wire and has a mesh size of 1 mm by 1 mm.

[0081] The driving base has dimensions of 1000 mm x 800 mm x 100 mm and is welded from aluminum alloy. Self-locking universal wheels are installed at the four corners of the base, each with a load capacity of 100 kg and a wheel diameter of 75 mm. The surface of the base is sandblasted with a surface roughness Ra of 3.2 microns.

[0082] The lifting bracket system consists of four columns, each of which includes an outer tube body and an inner tube body. The outer tube body is a square tube with a specification of 100 mm x 100 mm, a wall thickness of 4 mm, and a height of 700 mm. The inner tube body is a square tube with a specification of 90 mm x 90 mm, a wall thickness of 3 mm, and a height of 600 mm. A polytetrafluoroethylene slider is set between the inner and outer tube bodies, and the slider is 2 mm thick.

[0083] A lifting groove is provided on one side of the outer tube of the lifting bracket, with a width of 15 mm and a depth of 10 mm. A ball screw with a pitch of 2 mm is installed in the lifting groove, the screw diameter is 12 mm, and the effective stroke is 400 mm. The rated power of the lifting drive motor is 200 watts and the speed is 1500 rpm.

[0084] The main heating component of the hyperthermia system adopts a rectangular structure design with an overall size of 200 mm x 150 mm x 60 mm. The heating shell is made of high-purity copper with a purity of 99.99% and a wall thickness of 3 mm. The heating core is made of ceramic-based composite materials, and a nickel-chromium alloy heating wire with a diameter of 0.5 mm is buried inside.

[0085] The main heating component has a heating power of 500 watts, the maximum surface temperature can reach 80 degrees Celsius, and the temperature uniformity is plus or minus 1 degree Celsius. The heat conduction plate is made of graphene composite material, with a thickness of 1 mm and a thermal conductivity of 1500 watts per meter Kelvin. The heat dissipation holes are arranged in a plum blossom shape, with a total of 12 ventilation holes with a diameter of 3 mm.

[0086] The auxiliary heating component adopts a long strip structure with an overall size of 100 mm x 30 mm x 20 mm. The auxiliary heating shell is made of AL6061 aluminum alloy with a wall thickness of 2 mm. The auxiliary heating element adopts an alumina ceramic substrate, and the surface is coated with a 0.1 mm thick nano-silver conductive layer. The heating wire adopts a constantan wire with a diameter of 0.3 mm.

[0087] The rated power of the auxiliary heating assembly is 200 watts and the operating temperature range is 30 to 60 degrees Celsius. The shaft is made of GCr15 bearing steel with a diameter of 8 mm. The torsion spring is made of 304 stainless steel wire with a wire diameter of 1 mm, 6 turns and a torque of 0.8 Nm.

[0088] The temperature probe of the temperature control system adopts PT100 platinum resistance with Class A accuracy and a temperature measurement range of -50 to 200 degrees Celsius. The induction shell is made of medical grade silicone with a hardness of 40 degrees Shore A. The temperature measuring element adopts NTC thermistor with a resistance of 10 kilo-ohms.

[0089] The operational verification data after the system installation is completed is shown in the following table.

[0090] Table 1 System temperature control performance test data

[0091] Set temperature(℃) Measured temperature (℃) Temperature fluctuation(℃) Heating time(s) Cooling time(s) 35 34.8 ±0.3 120 180 40 40.2 ±0.4 150 210 45 44.8 ±0.4 180 240 50 50.1 ±0.5 210 270 55 54.9 ±0.5 240 300

[0092] Table 2 System mechanical performance test data

[0093] Test items Test value Standard value Judgment result Lifting speed (mm / s) 8.5 ≥8.0 qualified Positioning accuracy(mm) ±0.1 ±0.2 qualified Noise level (dB) 45 ≤50 qualified <![CDATA[Vibration acceleration (m / s 2 )]]> 0.3 ≤0.5 qualified Temperature uniformity(℃) ±1.0 ±1.5 qualified

[0094] The operation steps of this embodiment include the following: First, perform an equipment inspection, including checking whether the connection of each component is firm, whether the electrical system is normal, and whether there is leakage in the hydraulic system. After the inspection is completed, disinfect the equipment by wiping the surface of the equipment with 75% medical alcohol for no less than 10 minutes.

[0095] During the equipment preheating stage, set the temperature to 40 degrees Celsius for 15 minutes. During the preheating process, observe whether the temperature display is accurate, whether the heating is uniform, and whether there are any abnormal sounds. After the preheating is completed, perform a no-load test, gradually increase the temperature to 50 degrees Celsius, stay at each temperature point for 5 minutes, and record the temperature changes.

[0096] Before treatment, adjust the height of the equipment so that the treatment bed is 750 mm above the ground. Set the temperature of the main heating component to 45 degrees Celsius and the temperature of the auxiliary heating component to 40 degrees Celsius. Start the temperature control system and wait for the temperature to stabilize at the set value. After the temperature stabilizes, adjust the relative position of the main and auxiliary heating components to keep their angle at 120 degrees.

[0097] During the treatment, the temperature data is recorded every 5 minutes, including the temperature of the main heating component, the temperature of the auxiliary heating component, and the ambient temperature. At the same time, the patient's reaction is observed. If there is any discomfort, the temperature is adjusted immediately or the treatment is suspended. The treatment time is generally controlled within 30 minutes.

[0098] After the treatment, lower the temperature to room temperature and clean and disinfect the equipment. When cleaning, use a soft cloth dipped in a neutral detergent to wipe the surface of the equipment. Do not use corrosive detergents. Disinfection is done by ultraviolet irradiation for 30 minutes.

[0099] For long-term maintenance, a comprehensive inspection is conducted every week, including checking whether the electrical connection is reliable, whether the mechanical parts are loose, and whether the temperature control system is accurate. The filter is replaced once a month, and the thermal gel is replaced every three months. The lifting system is lubricated and maintained every six months, and high-temperature grease is used to lubricate the bearings and screws.

[0100] In practical applications, this device has shown good performance and reliability. The temperature control accuracy can reach plus or minus 0.5 degrees Celsius, the heating speed is fast, and the temperature distribution is uniform. The mechanical system runs smoothly, with low noise and accurate positioning. The equipment is simple to operate, easy to maintain, and has a long service life.

[0101] Safety is also fully guaranteed. The equipment adopts multiple protection measures, including over-temperature protection, over-current protection, and emergency stop function. All electrical components are made of medical-grade insulation materials, and the leakage current is less than 0.1 mA. The parts that contact the patient are made of materials with good biocompatibility and will not cause allergic reactions.

[0102] The device of this embodiment has achieved good results in clinical application. The treatment process is comfortable, the temperature is controllable, safe and reliable. After 6 months of clinical observation, the device operates stably without any failure. The patient satisfaction survey shows that more than 95% of patients are satisfied with the treatment effect.

[0103] All performance indicators of the equipment meet or exceed the design requirements. The response time of the temperature control system is less than 5 seconds, and the temperature control accuracy is better than plus or minus 0.5 degrees Celsius. The positioning accuracy of the mechanical system is better than 0.1 mm, and the repeat positioning accuracy is better than 0.05 mm. The noise of the whole machine is less than 45 decibels, which is lower than the national medical equipment noise standard requirements.

[0104] In terms of cost, the device uses standardized parts to reduce production and maintenance costs. The main parts can be purchased domestically, and the supply chain is stable and reliable. The overall structure of the equipment is simple, easy to assemble, and has high production efficiency. Through optimized design, the processing procedures are reduced and the manufacturing cost is reduced.

[0105] This embodiment proves that the thermochemotherapy device has good practicality and reliability and can meet the needs of clinical use. The performance indicators of the device are stable, the operation is simple and convenient, the maintenance cost is low, and it has a high cost performance. The safety and durability of the device are ensured through reasonable structural design and material selection. The successful application of the device provides an effective treatment method for traditional Chinese medicine tumor thermochemotherapy.

[0106] It should be noted that the variables involved in the present invention are explained in detail as shown in Table 5:

[0107] Table 5 Explanation of variables

[0108]

[0109] Specifically, the principle of the present invention is: the collaborative control principle of the main and auxiliary heating components adopted by the present invention is based on the multi-source superposition effect of heat transfer and the theory of local fine adjustment. The main heating component adopts a large-area design, and achieves uniform heat diffusion through heat-conducting materials to provide a basic thermal field for the entire treatment area. The auxiliary heating component adopts a flexible rotating structure, which can provide additional heating or temperature fine-tuning for specific areas as needed.

[0110] During the heat transfer process, the heat generated by the main heating component diffuses to the surrounding area through heat conduction, forming a relatively uniform temperature field. This conduction process follows Fourier's law of heat conduction, and the diffusion rate of heat in space is proportional to the temperature gradient. The large-area design of the main heating component ensures the stability of the basic temperature field, while the high thermal conductivity material used on its surface improves the heat transfer efficiency.

[0111] The design of the auxiliary heating component adopts the principle of local heat compensation. Through the rotatable structural design, the auxiliary heating component can flexibly adjust its position to supplement the heating of the lower temperature area. This supplementary heating process can achieve fine adjustment of the temperature of the local area through precise temperature feedback control. The small area design of the auxiliary heating component makes it have a fast response characteristic and can compensate for temperature changes in time.

[0112] The temperature control system of the present invention adopts the closed-loop feedback control principle, monitors the temperature distribution of the treatment area in real time through the temperature probe, and dynamically adjusts the output power of the main and auxiliary heating components according to the measurement results. The system adopts the PID control algorithm, and realizes precise temperature control through the synergy of the three links of proportion, integration and differentiation. Among them, the proportion link is responsible for basic temperature regulation, the integration link eliminates static errors, and the differentiation link improves the system response speed.

[0113] In terms of mechanical structure design, the present invention adopts modular and standardized design principles. Through reasonable structural layout, effective coordination between functional modules is achieved. The lifting bracket system adopts a double-layer sleeve structure to ensure the smoothness of movement and the accuracy of positioning. The design of the guide groove and the spiral shaft provides reliable mechanical support for the position adjustment of the main and auxiliary heating components.

[0114] The working process of the entire system embodies the principle of precise heat control. First, the main heating component establishes a basic temperature field, ensuring the basic temperature requirements of the treatment area by uniformly heating a large area. Then, the auxiliary heating component fine-tunes the local area based on real-time temperature feedback to achieve precise temperature control. This dual heating structure not only improves the temperature control accuracy, but also enhances the stability and reliability of the system.

[0115] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A local thermal chemotherapy device for traditional Chinese medicine tumors, characterized in that: include: The therapeutic host, a driving base, a lifting bracket, a thermal therapy system, and a temperature control system; the driving base is a rectangular structure, and universal wheels are fixedly installed at the four corners of the bottom of the driving base, and lifting brackets are fixedly installed at the four corners of the upper surface of the driving base, and the upper ends of the four lifting brackets are fixedly connected to the therapeutic host; the therapeutic host includes a main shell, an inner lining layer, and a barrier layer, the main shell is a cylindrical structure and the opening is upward, and the inner lining layer and the barrier layer are arranged in sequence from top to bottom inside the main shell, the inner lining layer is made of a flexible heat-conductive material, and the barrier layer is made of an insulating material; a guide groove is opened on one side of the therapeutic host, and a spiral shaft is rotatably connected in the guide groove, and a return spring is arranged between the spiral shaft and the inner wall of the guide groove; a transmission frame is fixedly sleeved on the outside of the spiral shaft, and a thermal therapy system is fixedly connected to one end of the transmission frame; the thermal therapy system includes a main heating component and an auxiliary heating component; the main heating component is a rectangular structure, and an auxiliary heating component is rotatably connected to the edge of one side of the main heating component, and a temperature control system is arranged at the other end of the auxiliary heating component.

2. A local thermal chemotherapy device for tumors in traditional Chinese medicine according to claim 1, characterized in that: The lifting bracket includes an outer tube body and an inner tube body; the outer tube body is a hollow structure and is fixedly installed on the upper surface of the driving base, the inner tube body is slidably connected to the inside of the outer tube body, and the top of the inner tube body is fixedly connected to the bottom of the treatment host; a lifting groove is opened on one side of the outer tube body, a threaded column is rotatably connected in the lifting groove, a lifting block is threadedly connected to the outer side of the threaded column, one end of the lifting block passes through the lifting groove and is fixedly connected to the inner tube body; a lifting drive motor is fixedly installed at the bottom of the outer tube body, and the output end of the lifting drive motor is fixedly connected to the threaded column.

3. A local thermal chemotherapy device for tumors in traditional Chinese medicine according to claim 2, characterized in that: The main heating component includes a heating shell and a heating core; the interior of the heating shell is a closed cavity structure, the interior of the heating shell is provided with a heating core, the outside of the heating core is wrapped with a heating wire, and the upper surface of the heating shell is provided with a heat conducting plate, and the heat conducting plate is made of a metal material with good thermal conductivity; a heat dissipation hole is opened on one side of the heating shell, and a protective cover is provided at the bottom of the heating shell.

4. A local thermal chemotherapy device for tumors in traditional Chinese medicine according to claim 3, characterized in that: The auxiliary heating component includes an auxiliary heating shell and an auxiliary heating element; the auxiliary heating shell is in a long strip structure, an auxiliary heating element is arranged inside the auxiliary heating shell, a heating wire is wound around the outside of the auxiliary heating element, one end of the auxiliary heating shell is rotatably connected to the main heating component through a rotating shaft, and a torsion spring is sleeved on the outside of the rotating shaft.

5. A local thermal chemotherapy device for tumors in traditional Chinese medicine according to claim 4, characterized in that: The temperature control system includes a temperature probe and an induction shell; the temperature probe is arranged at the outer end of the auxiliary heating component, the induction shell is fixedly connected to the bottom of the temperature probe, and a temperature measuring element is arranged inside the induction shell; the induction shell is made of elastic material, and a protective layer is arranged on the outer surface of the induction shell.

6. A local thermal chemotherapy device for tumors in traditional Chinese medicine according to claim 5, characterized in that: The inner walls on both sides of the guide groove are provided with limiting grooves, and both ends of the transmission frame are provided with sliding blocks matching the limiting grooves. A protective sleeve is provided outside the transmission frame, and a buffer pad is provided between the protective sleeve and the transmission frame.

7. A local thermal chemotherapy device for tumors in traditional Chinese medicine according to claim 6, characterized in that: An edge protection ring is arranged at the top edge of the treatment main unit. The edge protection ring is made of soft material, and anti-slip grooves are arranged on the inner side of the edge protection ring.

8. A local thermal chemotherapy device for tumors in traditional Chinese medicine according to claim 7, characterized in that: A metal mesh layer is arranged outside the barrier layer, a guide channel is formed between the metal mesh layer and the main body shell, and a reinforcing rib is arranged on the inner wall of the guide channel.

9. A local thermal chemotherapy device for tumors in traditional Chinese medicine according to claim 8, characterized in that: The outer surface of the main body shell is provided with a protective layer, the protective layer is made of high temperature resistant material, and the surface of the protective layer is sprayed with an anti-corrosion coating.

10. A local thermal chemotherapy device for tumors in traditional Chinese medicine according to claim 9, characterized in that: The geometric center distance between the main and auxiliary heating components, the heating area and the temperature gradient are defined by a set of relationship definition equations.

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