An intratumoral medical thermotherapy auxiliary device

Abstract

This utility model discloses an auxiliary device for hyperthermia in oncology, relating to the field of medical auxiliary technology. To address the time-consuming and labor-intensive use of felt pads and water bags in clinical practice, this utility model designs an auxiliary device for hyperthermia in oncology. Its structural features mainly focus on: a coupling sleeve and a heat insulation structure. The coupling sleeve is securely fitted onto the electrode plate. When the electrode plate is adjusted for treatment, the coupling sleeve can be adjusted accordingly, eliminating the need for medical staff to make adjustments throughout the treatment, thus improving the efficiency of radiofrequency hyperthermia. The coupling sleeve is made of stable medical-grade rubber, suitable for radiofrequency hyperthermia. Multiple layers of flexible and thermally stable heat insulation are filled inside the coupling sleeve. This lowers the skin surface temperature and allows for better adhesion to the skin surface. Through effective heat insulation layering during radiofrequency hyperthermia, excellent heat insulation is ensured, concentrating heat in the treatment area and reducing heat loss and impact on surrounding tissues.

Description

Technical Field

[0001] This utility model relates to the field of medical auxiliary technology, and more specifically, to a thermotherapy auxiliary device for oncology. Background Technology

[0002] Radiofrequency power can penetrate subcutaneous tissue to heat deep within the body. Since tumor cells are less heat-resistant than normal cells, modern medical research and domestic and international practice have confirmed that heating to 40-45 degrees Celsius can selectively destroy and kill tumor cells without affecting normal cells. Therefore, radiofrequency hyperthermia has become a new treatment for tumors after chemotherapy, radiotherapy, and interventional drug therapy. Furthermore, because hyperthermia does not kill normal tissue cells and has no side effects on patients, radiofrequency hyperthermia devices are widely used in the treatment of solid malignant tumors in various parts of the body.

[0003] Currently, the general method of tumor radiofrequency hyperthermia devices is as follows: radiofrequency power is transmitted from the radiofrequency transmitter via a coaxial cable to a pair of vertically opposed capacitive electrode plates (some devices also have a pair of horizontally opposed electrode plates) fixedly connected to the lifting rod. The patient lies on the bed with the treatment area placed between the two electrode plates. The electrode plates radiate radiofrequency energy, penetrating the body and heating the tissue at the tumor lesion site to kill tumor cells. To prevent excessively high temperatures from damaging human tissue and to ensure better coupling and even penetration of radiofrequency energy into the lesion site, a felt pad and a cold water bag are generally placed on the lesion site during treatment.

[0004] The electrode plate is coupled to the patient using a felt pad and a water bag, and the electrode plate is clamped tightly to minimize the space between them to prevent air from forming hot spots. If necessary, a small water bag is used to fill the gaps. Throughout the treatment, careful adjustments are made to ensure the treatment achieves the goal of keeping the skin surface temperature relatively low and the deep tumor temperature high. Medical staff need to make adjustments throughout each treatment session, which is time-consuming and labor-intensive, reduces the efficiency of radiofrequency hyperthermia, and poses a risk of cross-infection.

[0005] Patent CN216124658U discloses an auxiliary band for a radiofrequency hyperthermia system, comprising: a fixation band wrapped around the patient's waist, abdomen, or chest, the two ends of which are fixedly connected by Velcro; three water bags, all fixed to the inner surface of the fixation band, with the three water bags corresponding to the patient's front and sides respectively; the Velcro includes a rough side and a hook side, which are respectively located on the side surfaces of the two ends of the fixation band that are close to each other, and the length of the rough side is greater than the length of the hook side, overcoming the shortcomings of the prior art. By binding the fixation band to the patient's lesion, the water bags are fixed to the patient's front and sides without the need for repeated adjustments and fixation, reducing the workload of medical staff and improving the efficiency of radiofrequency hyperthermia.

[0006] The improvement of this utility model is to fix the water bag, while this application eliminates the use of the felt pad and water bag, and improves the coupling and heat insulation methods. Utility Model Content

[0007] To address the above problems, the technical approach adopted by this utility model is as follows: A disposable coupling bag is placed over the electrode plate. When the electrode plate is adjusted, the coupling bag can be adjusted accordingly, saving manpower. The coupling bag is filled with multiple layers of liquid or soft heat insulation, which can lower the skin surface temperature and better fit the skin surface, while avoiding the use of felt pads and water bags, thus reducing the risk of infection.

[0008] The specific plan is as follows: A thermotherapy auxiliary device for oncology includes: a coupling sleeve having a sealed cavity inside and disposed on an electrode plate for forming coupling between the patient's skin and the electrode plate; and a heat insulation structure disposed inside the cavity for reducing the surface temperature of the patient's skin; the heat insulation structure includes a first heat insulation layer, a second heat insulation layer, and a third heat insulation layer connected sequentially from top to bottom.

[0009] Preferably, the first insulation layer is water.

[0010] Preferably, the second heat insulation layer is a membrane, and the edge of the membrane is connected to the inner wall of the cavity.

[0011] Preferably, the third heat insulation layer is a gel.

[0012] Furthermore, according to the above scheme, the coupling sleeve includes an elastic segment, a support segment, and a coupling segment connected sequentially from top to bottom.

[0013] Optionally, the elastic segment and the coupling segment are made of silicone rubber.

[0014] Optionally, the support section is made of fluororubber.

[0015] Specifically, the coupling sleeve has a partition layer inside, one side of which is attached to the electrode plate, and the other side forms the cavity.

[0016] By adopting the above technical solution, this utility model has the following technical effects: A thermotherapy auxiliary device for oncology includes: a coupling sleeve having a sealed cavity inside and disposed on an electrode plate for forming coupling between the patient's skin and the electrode plate; a heat insulation structure disposed inside the cavity for reducing the surface temperature of the patient's skin; the heat insulation structure includes a first heat insulation layer, a second heat insulation layer and a third heat insulation layer connected sequentially from top to bottom.

[0017] The patient lies on the bed with the treatment area placed between two electrode plates. The coupling bag is then securely fitted onto each electrode plate. As the electrode plates are adjusted, the coupling bag adjusts accordingly, eliminating the need for constant adjustment by medical staff during treatment, saving manpower and improving the efficiency of radiofrequency thermotherapy. The coupling bag is made of stable medical-grade rubber, suitable for radiofrequency thermotherapy. The support section uses a rubber material with low deformation capacity to provide support, while the elastic and coupling sections use a more elastic rubber material for easier fixation to the electrode plates and better skin contact. The coupling bag is filled with multiple layers of flexible and thermally stable insulation. This lowers the skin surface temperature and ensures better skin contact. During radiofrequency thermotherapy, this multi-layered effective insulation ensures good heat insulation, preventing excessive heat conduction to surrounding normal tissues and concentrating heat in the treatment area, reducing heat loss and impact on surrounding tissues. Its excellent insulation properties prevent unnecessary electrical stimulation or damage to surrounding tissues from radiofrequency, and its flexibility allows for better contact with the treatment area. This device has a simple structure, is easy to operate, and can be used once, avoiding the reuse of felt pads and water bags, reducing the risk of cross-infection, and ensuring high safety. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly described below.

[0019] Figure 1 This is a schematic diagram of the structure of a hyperthermia auxiliary device for oncology provided in an embodiment of this application; Figure 2 This is a cross-sectional view of the coupling sleeve provided in an embodiment of this application; Figure 3 This is a cross-sectional view of the thermal insulation structure provided in the embodiments of this application; Figure 4 This is a schematic diagram of the use of a thermotherapy auxiliary device for oncology, provided in an embodiment of this application, mounted on an electrode plate; Icons: Coupling sleeve 1; Cavity 1A; Elastic section 11; Support section 12; Coupling section 13; Partition 14; Thermal insulation structure 2; First thermal insulation layer 21; Second thermal insulation layer 22; Third thermal insulation layer 23. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the appendices in the embodiments of this application will be described below. Figure 1-4 The technical solutions in the embodiments of this application are clearly and completely described. Obviously, the described embodiments are some embodiments of this application, but not all embodiments.

[0021] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0022] In the description of this application, it should be noted that the terms "center", "upper", "lower", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this application is in use. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0023] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms “set up,” “install,” “connect,” and “link” should be interpreted broadly.

[0024] Example The inventors discovered that in clinical treatment, to achieve the therapeutic goal of relatively low skin surface temperature and high deep tumor temperature, it is necessary to use a felt pad and water bag for coupling between the electrode plate and the patient. If necessary, a small water balloon is also needed to fill the gaps. Medical staff need to make adjustments throughout each treatment, which is time-consuming and labor-intensive, reduces the efficiency of radiofrequency hyperthermia, and poses a risk of cross-infection. Therefore, this application provides a disposable, adjustable, highly conforming, and heat-insulating auxiliary device for oncology hyperthermia.

[0025] In the embodiments of this application, please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 , Figure 1 This is a schematic diagram of the structure of a hyperthermia auxiliary device for oncology provided in an embodiment of this application. Figure 2 This is a cross-sectional view of the coupling sleeve provided in an embodiment of this application. Figure 3 This is a cross-sectional view of the thermal insulation structure provided in the embodiments of this application. Figure 4 This is a schematic diagram of the use of a thermotherapy auxiliary device for oncology, provided in an embodiment of this application, fitted onto an electrode plate. The thermotherapy auxiliary device for oncology includes: a coupling sleeve 1, which has a sealed cavity 1A inside and is disposed on the electrode plate for forming coupling between the patient's skin and the electrode plate; a heat insulation structure 2, disposed inside the cavity 1A, for reducing the surface temperature of the patient's skin; the heat insulation structure 2 includes a first heat insulation layer 21, a second heat insulation layer 22, and a third heat insulation layer 23 connected sequentially from top to bottom.

[0026] The patient lies on the bed with the treatment area placed between two electrode plates. The coupling bag is then securely fitted onto each electrode plate. As the electrode plates are adjusted, the coupling bag adjusts accordingly, eliminating the need for constant adjustment by medical staff during treatment, saving manpower and improving the efficiency of radiofrequency thermotherapy. The coupling bag is made of stable medical-grade rubber, suitable for radiofrequency thermotherapy. The support section 12 uses a rubber material with low deformation capacity to provide support, while the elastic section 11 and coupling section 13 use a more elastic rubber material for easier fixation to the electrode plates and better skin contact. Multiple layers of flexible and thermally stable insulation are filled inside the coupling bag. This lowers the skin surface temperature and ensures better skin contact. During radiofrequency thermotherapy, these layers of effective insulation ensure good heat insulation, preventing excessive heat conduction to surrounding normal tissues and concentrating heat in the treatment area, reducing heat loss and impact on surrounding tissues. Simultaneously, its excellent insulation properties prevent unnecessary electrical stimulation or damage to surrounding tissues from radiofrequency, and its flexibility allows for better contact with the treatment area. This device has a simple structure, is easy to operate, and can be used once, avoiding the reuse of felt pads and water bags, reducing the risk of cross-infection, and ensuring high safety.

[0027] In the above scheme, the coupling sleeve 1 is hollow with an opening at the top. The opening is fitted onto the electrode plate. In order to further enhance the stability and firmness of the connection, an elastic ring integrally formed with the opening can be set at the edge of the opening. The elastic ring further enhances the friction with the electrode plate. Setting an elastic ring at the opening is a common existing technology that can be implemented by those skilled in the art, and will not be described in detail here.

[0028] Specifically, the coupling sleeve 1 is made of stable medical-grade rubber suitable for radiofrequency hyperthermia. It will not deform, overheat, melt, decompose, or produce harmful gases due to the effects of radiofrequency waves, ensuring safety and stability during treatment. The coupling sleeve 1 is integrally molded and includes an elastic segment 11, a support segment 12, and a coupling segment 13 connected sequentially from top to bottom. The elastic segment 11 is used to fit over the electromagnetic plate; for easy fitting, it is made of highly elastic silicone rubber. The coupling segment 13 is used to adhere to the patient's skin; for better fit, it is also made of highly elastic silicone rubber. The support segment 12, located in the middle, provides support to adjust with the electrode plate and is made of fluororubber with low deformation capacity.

[0029] Silicone rubber has good high-temperature resistance, which can withstand the high temperatures generated during radiofrequency thermotherapy, ensuring that it will not easily soften, deform, or decompose in the thermotherapy environment, thus guaranteeing safety and effectiveness. It has excellent biocompatibility, is relatively friendly to human tissue, and is unlikely to cause allergic reactions or other adverse reactions. It is suitable for contact with human skin and other parts of the body. During thermotherapy, it can conform to the human body for corresponding operations, reducing adverse stimulation to the human body. It has good flexibility and elasticity, which can be appropriately bent and conformed to the shape of different thermotherapy areas. It can adapt well to the contours of the human body. For example, when performing thermotherapy on joints, it can be tightly wrapped to make the thermotherapy effect more even.

[0030] Fluororubber has excellent high and low temperature resistance. In radiofrequency hyperthermia, it can play a stable role in both the high temperature generated by hyperthermia and the low temperature that may occur in some special environments. It has good airtightness and strong chemical stability.

[0031] Silicone rubber and fluororubber are both common existing technologies that can be implemented by those skilled in the art, and will not be elaborated here.

[0032] Furthermore, the coupling sleeve 1 is provided with a medical rubber partition 14. The partition 14 is laterally located at the connection between the elastic section 11 and the support section 12. The edge of the partition 14 is integrally formed with the inner wall of the coupling sleeve 1. The side of the partition 14 near the opening is used to fit with the electrode plate. That is, the inner wall of the elastic section 11 and one side of the partition 14 together cover the electrode plate. The other side of the partition 14 forms a sealed cavity 1A with the inner walls of the support section 12 and the coupling section 13.

[0033] In a preferred embodiment, the heat insulation structure 2 located in the cavity 1A includes a first heat insulation layer 21, a second heat insulation layer 22, and a third heat insulation layer 23 connected sequentially from top to bottom. The second heat insulation layer 22 is a membrane, with its edges integrally formed and connected to the inner wall of the cavity 1A. The membrane is laterally positioned at the connection between the support section 12 and the coupling section 13. Preferably, an aerogel heat insulation membrane is used, which has extremely low thermal conductivity, excellent thermal stability, and electrical insulation. Its extremely low thermal conductivity ensures good heat insulation, concentrating heat in the treatment area during radiofrequency hyperthermia and reducing heat loss and impact on surrounding tissues. Its electrical insulation avoids radiofrequency interference and the risk of accidental electric shock, and its extremely low water permeability can even achieve a water-impermeable effect. Aerogel heat insulation membranes are common existing technologies, achievable by those skilled in the art, and will not be described in detail here.

[0034] The membrane divides the cavity 1A into upper and lower parts. The upper part has a first heat insulation layer 21, and the lower part has a third heat insulation layer 23. The first heat insulation layer 21 is water, usually ordinary purified water or distilled water. This water has good thermal conductivity and can effectively absorb and remove heat, thus cooling the skin. The third heat insulation layer 23 is a gel, which can be a multifunctional hydrogel or a gel used in Greengil radiofrequency therapy devices.

[0035] For example, the multifunctional controllable cross-linked hyaluronic acid-based hydrogel developed by Professor Liu Jie's team at the School of Biomedical Engineering, Sun Yat-sen University, has a significant effect on thermal protection during ablation therapy. It outperforms the widely used 5% glucose injection and the extensively studied F127 hydrogel, and can better remain at the target site throughout the entire thermotherapy process, providing stable thermal protection.

[0036] Greengil radiofrequency therapy device gel: composed of purified water, propylene glycol, cellulose polymer, conductive salt, disodium hydrogen phosphate, sodium dihydrogen phosphate, and edible brilliant blue pigment. It features anti-burn properties, skin protection, lubrication, and energy conduction, and can be used with various radiofrequency devices.

[0037] The gels described above are all common existing technologies that can be implemented by those skilled in the art, and will not be elaborated upon here.

[0038] Application process Radio frequency power is transmitted from the radio frequency transmitter via a coaxial cable to a pair of vertically opposite capacitive electrode plates (some also have a pair of horizontally opposite electrode plates) that are fixedly connected to the lifting rod. The patient lies on the bed with the treatment area placed between the two electrode plates, and the coupling bag is securely placed on the electrode plates. The electrode plates radiate radio frequency through the multi-layer heat insulation structure 2, penetrating the human body. This keeps the patient's skin surface temperature relatively low while heating the tissue at the tumor lesion site to kill the tumor cells.

[0039] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. An intratumoral hyperthermia-assisting device for medical use, characterized in that, include: The coupling sleeve (1) has a sealed cavity (1A) inside and is placed on the electrode plate to form a coupling between the patient's skin and the electrode plate; A heat insulation structure (2) is provided inside the cavity (1A) to reduce the surface temperature of the patient's skin; The heat insulation structure (2) includes a first heat insulation layer (21), a second heat insulation layer (22) and a third heat insulation layer (23) connected from top to bottom.

2. The oncology-specific hyperthermia auxiliary device according to claim 1, characterized in that, The first insulation layer (21) is water.

3. The oncology-specific hyperthermia auxiliary device according to claim 1, characterized in that, The second heat insulation layer (22) is a membrane, and the edge of the membrane is connected to the inner wall of the cavity (1A).

4. The oncology-specific hyperthermia auxiliary device according to claim 1, characterized in that, The third heat insulation layer (23) is a gel.

5. The oncology-specific hyperthermia auxiliary device according to claim 1, characterized in that, The coupling sleeve (1) includes an elastic segment (11), a support segment (12) and a coupling segment (13) connected from top to bottom.

6. The oncology-specific hyperthermia auxiliary device according to claim 5, characterized in that, The elastic segment (11) and the coupling segment (13) are made of silicone rubber.

7. The oncology-specific hyperthermia auxiliary device according to claim 5, characterized in that, The support section (12) is made of fluororubber.

8. The oncology-specific hyperthermia auxiliary device according to claim 5, characterized in that, The coupling sleeve (1) is provided with a partition (14), one side of which is attached to the electrode plate, and the other side forms the cavity (1A).

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