A prostate tumor hyperthermia system
Patent Information
- Application Number
- CN202521112364.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-30
- Publication Date
- 2026-10-23
- Estimated Expiration
- 2035-05-30
AI Technical Summary
[0008]本申请实施例提供一种前列腺肿瘤热疗系统，以解决相关技术中对前列腺热疗时，容易对周边组织造成损伤的技术问题
[0031]本申请实施例提供了一种前列腺肿瘤热疗系统，先从直肠内伸入套管，而方便将热疗头送至体内并靠近前列腺处，再利用驱动组件使得热疗头从套管伸出并抵靠在前列腺处，通过加热组件对热疗头进行加热，从而实现对前列腺的热疗。加热组件工作的同时，导管和流道内循环有冷却介质，通过测量导管内的冷却介质温度，从而方便测量并推测热疗头处的温度，即可避免热疗头处的温度过高而造成周边组织损伤。当温度过高时，则提高流道内的冷却介质的流速，以加快热疗头处的散热，降低热疗头处的温度，以避免损伤前列腺周边组织的温度。
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Abstract
Description
Technical Field
[0001] This application relates to the field of hyperthermia technology, and in particular to a hyperthermia system for prostate tumors. Background Technology
[0002] Globally, prostate cancer is one of the most common malignant tumors in men. According to data released by the International Agency for Research on Cancer (IARC) of the World Health Organization, there were 1.41 million new cases of prostate cancer worldwide in 2020. In China, its incidence rate is also rising significantly, with approximately 134,000 new cases in 2022, ranking sixth among male cancers.
[0003] The incidence of prostate cancer in China has risen rapidly over the past 30 years, which is related to factors such as improved medical standards, widespread screening, population aging, and Westernized dietary habits. Only 30% of newly diagnosed cases in my country are locally localized, while the remainder are mostly locally advanced or have extensive metastases.
[0004] Prostate cancer can cause many health problems: it can cause symptoms such as frequent urination, urgency, painful urination, weak urine stream, and frequent urination at night, and in severe cases, it can affect sleep; in the late stage, it may invade adjacent tissues and organs or metastasize to other parts of the body, such as bones, lymph nodes, lungs, and liver, leading to more serious conditions and even endangering life.
[0005] For prostate cancer, the main treatment methods currently include surgery, radiation therapy, and drug therapy. Among them, surgery carries a high risk and has limited applicability to some older patients or those with multiple underlying diseases; radiation therapy is problematic because the radioactivity used is difficult to control stably and can easily cause radiation damage to surrounding tissues; drug therapy can bring many side effects to the patient's body, and even chemotherapy can kill normal cells.
[0006] For the reasons mentioned above, a viable alternative is the use of thermotherapy particles, which utilizes an external energy field to stimulate particles implanted at the tumor site, causing the particles to generate heat and thus destroy tumor cells.
[0007] However, the prostate gland is located in a rather unique position, surrounded by tissues such as the urethra and rectum. During prostate hyperthermia, these surrounding tissues are heated simultaneously, and excessively high temperatures can easily damage them. Utility Model Content
[0008] This application provides a prostate tumor hyperthermia system to solve the technical problem in related technologies that hyperthermia of the prostate can easily cause damage to surrounding tissues.
[0009] A prostate tumor hyperthermia system, comprising:
[0010] A cannula, the tip of which is adapted to extend into the body through the rectum;
[0011] A heat therapy head, which is slidably disposed inside the cannula along the length of the cannula, and is adapted to extend from the front end of the cannula and abut against the prostate.
[0012] A driving component, the driving component being used to drive the movement of the heat therapy head;
[0013] A heating assembly for heating the heat therapy head;
[0014] A temperature control assembly includes a flow channel, two conduits, a heat exchanger, and a delivery pump. The flow channel is coiled around the heat therapy head. The two conduits are respectively connected to both ends of the flow channel. Both conduits are arranged inside a sleeve, and both conduits extend out of the sleeve near the rear end of the sleeve. The ends of the two conduits away from the flow channel are respectively connected to the inlet and outlet of the heat exchanger. The delivery pump is used to make the cooling medium flow within the flow channel and the conduits.
[0015] Specifically, the temperature at the thermotherapy head is measured by measuring the temperature of the cooling medium inside the conduit at the inlet end of the heat exchanger.
[0016] In some embodiments, the heat therapy head includes:
[0017] A rigid head, the driving assembly is drivingly connected to the rigid head, the heating assembly acts on the rigid head, and a gap is left between the rigid head and the circumferential inner side of the sleeve;
[0018] A flexible sleeve is fitted onto the rigid head, and the flow channel is formed inside the flexible sleeve.
[0019] In some embodiments, when the flexible sleeve is inside the sleeve, it is in a compressed state; after the flexible sleeve extends out of the sleeve, the flexible sleeve recovers its deformation, and the cross-sectional area of the flexible sleeve is larger than the cross-sectional area of the sleeve.
[0020] In some embodiments, the front edge of the sleeve is rounded.
[0021] In some embodiments, the circumferential outer surface of the flexible sleeve includes at least one plane or arc surface.
[0022] In some embodiments, the prostate tumor hyperthermia system further includes a vibrator mounted on the drive end of the drive assembly and connected to the hyperthermia head to drive the hyperthermia head to vibrate.
[0023] In some embodiments, the prostate tumor hyperthermia system also includes a pressure sensor disposed at the front end of the hyperthermia head.
[0024] In some embodiments, the heating assembly includes a heating wire coiled around the surface of the heat therapy head.
[0025] In some embodiments, the driving component includes:
[0026] A connecting rod is slidably arranged inside the sleeve along the length direction of the sleeve, and one end of the connecting rod is connected to the heat therapy head;
[0027] A sliding frame, which is slidably disposed on the inner wall of the sleeve along the length direction of the sleeve;
[0028] A lead screw mechanism drives the sliding frame to slide within the sleeve along the length of the sleeve.
[0029] In some embodiments, the prostate tumor hyperthermia system also includes a timer attached to the rear end of the cannula.
[0030] The beneficial effects of the technical solution provided in this application include:
[0031] This application provides a hyperthermia system for prostate tumors. A cannula is first inserted into the rectum to facilitate the delivery of a hyperthermia head close to the prostate. A drive assembly then extends the head from the cannula and presses it against the prostate. A heating assembly heats the head, thus achieving hyperthermia of the prostate. While the heating assembly is operating, a cooling medium circulates within the cannula and flow channel. By measuring the temperature of the cooling medium within the cannula, the temperature at the hyperthermia head can be easily measured and estimated, preventing excessively high temperatures that could damage surrounding tissues. If the temperature is too high, the flow rate of the cooling medium in the flow channel is increased to accelerate heat dissipation from the hyperthermia head, lowering its temperature and preventing damage to surrounding prostate tissues. Attached Figure Description
[0032] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0033] Figure 1 This is a schematic diagram of a prostate tumor hyperthermia system provided in an embodiment of this application;
[0034] Figure 2This is a schematic diagram of the thermotherapy head extending from the cannula, as provided in an embodiment of this application.
[0035] In the diagram: 1. Sleeve; 2. Thermotherapy head; 21. Rigid head; 22. Flexible sleeve; 3. Drive assembly; 31. Connecting rod; 32. Sliding frame; 33. Screw mechanism; 4. Heating assembly; 5. Temperature control assembly; 51. Flow channel; 52. Conduit; 53. Heat exchanger; 54. Delivery pump; 55. Temperature sensor; 6. Vibrator; 7. Timer. Detailed Implementation
[0036] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0037] This application provides a hyperthermia system for prostate tumors. It measures the temperature at the treatment head using a temperature control component and promptly lowers the temperature to prevent excessive heat from damaging other tissues. This application addresses the technical problem in related technologies where hyperthermia of the prostate can easily damage surrounding tissues.
[0038] Reference Figure 1 and Figure 2 A prostate tumor hyperthermia system includes a cannula 1, a hyperthermia head 2, a drive component 3, a heating component 4, and a temperature control component 5.
[0039] The cannula 1 is made of a rigid, skin-friendly material, including plastic. The cannula 1 is suitable for insertion into the body through the rectum.
[0040] Reference Figure 1 and Figure 2 The thermotherapy head 2 is slidably disposed inside the cannula 1 along the length of the cannula 1, and the thermotherapy head 2 is adapted to extend from the front end of the cannula 1 and abut against the prostate. The driving assembly 3 is used to drive the thermotherapy head 2 to slide and extend out of the cannula 1.
[0041] Reference Figure 1 and Figure 2 During hyperthermia, the hyperthermia head 2 is located inside the cannula 1. First, the cannula 1 is extended from the rectum into the body, and then the driving component 3 is used to push the hyperthermia head 2 out of the cannula 1, so that the hyperthermia head 2 is located outside the cannula 1 and against the prostate.
[0042] This configuration allows the thermotherapy head 2 to be inserted into the body through the cannula 1. Because the cannula 1 is not easily deformed and has good straightness, it is convenient for medical staff to operate. In addition, the wiring harness connected to the thermotherapy head 2 can also be easily led out of the cannula 1 to the outside of the body.
[0043] Reference Figure 1 and Figure 2 The heating component 4 includes a heating wire, which is spirally wound around the surface of the heat therapy head 2. The heat therapy head 2 can be heated by energizing the heating wire.
[0044] Reference Figure 1 and Figure 2 The temperature control component 5 includes a flow channel 51, two conduits 52, a heat exchanger 53, and a delivery pump 54. The flow channel 51 is coiled around the heat therapy head 2, and the two conduits 52 are respectively connected to the two ends of the flow channel 51. Both conduits 52 are arranged inside the sleeve 1, and the two conduits 52 extend out of the sleeve 1 near the rear end of the sleeve 1.
[0045] The ends of the two conduits 52 furthest from the flow channel 51 are connected to the inlet and outlet of the heat exchanger 53, respectively; the transfer pump 54 is used to make the cooling medium flow in the flow channel 51 and the conduits 52. The conduit 52 connected to the outlet of the heat exchanger 53 first enters the transfer pump 54 and is then pumped to the flow channel 51.
[0046] This configuration allows the conduit 52, flow channel 51, and heat exchanger 53 to form a circulating flow path for the cooling medium, thereby cooling the thermotherapy head 2. Additionally, the sleeve 1 provides space for the installation of the conduit 52, facilitating its introduction into the body.
[0047] By measuring the temperature of the cooling medium in the conduit 52 at the inlet end of the heat exchanger 53, and then measuring the temperature at the heat therapy head 2, the temperature at the heat therapy head 2 can be easily monitored, preventing damage to surrounding tissues due to excessive temperature. When the temperature is too high, the flow rate of the cooling medium in the flow channel 51 is increased to accelerate heat dissipation at the heat therapy head 2 and lower the temperature at the heat therapy head 2, thus avoiding damage to the surrounding tissues of the prostate.
[0048] In this embodiment, the cooling medium includes coolant; in other embodiments, the cooling medium includes cooling gas.
[0049] Reference Figure 1 and Figure 2 In this embodiment, the temperature control component 5 also includes a temperature sensor 55, the measuring end of which is installed at the conduit 52 that is connected to the liquid inlet of the heat exchanger 53.
[0050] Reference Figure 1 and Figure 2 The heat therapy head 2 includes a rigid head 21 and a flexible sheath 22.
[0051] Reference Figure 1 and Figure 2 The driving component 3 is connected to the rigid head 21, and the heating component 4 acts on the rigid head 21. A gap is left between the rigid head 21 and the inner circumferential surface of the sleeve 1. The rigid head 21 is made of materials such as rigid plastic and titanium alloy. The flexible sleeve 22 is fitted onto the rigid head 21, and the flow channel 51 is formed inside the flexible sleeve 22. The flexible sleeve 22 is made of materials such as silicone.
[0052] This configuration allows the rigid head 21 to provide an installation location for the heating component 4 and to function as a heat source without deformation. The flexible sleeve 22 contacts internal tissues, minimizing tissue damage and improving comfort. Furthermore, the deformation of the flexible sleeve 22 allows it to adhere to a larger area of the prostate surface, enhancing the therapeutic effect.
[0053] Reference Figure 1 and Figure 2 Furthermore, the flow channel 51 is arranged within the flexible sleeve 22, which facilitates a more accurate determination of the tissue temperature by measuring the temperature inside the conduit 52, and also facilitates timely cooling.
[0054] Furthermore, when the flexible sleeve 22 is inside the sleeve 1, it is in a compressed state. After the flexible sleeve 22 extends out of the sleeve 1, the flexible sleeve 22 recovers its deformation, and the cross-sectional area of the flexible sleeve 22 is greater than the cross-sectional area of the sleeve 1.
[0055] With this design, when the thermotherapy head 2 is pushed out of the cannula 1, the flexible sheath 22 returns to its shape and expands, increasing its surface area and making it easier to cover the prostate surface, thus ensuring that the prostate is heated evenly and optimizing the thermotherapy effect. In addition, by using the cannula 1 to confine the thermotherapy head 2 inside, the diameter of the cannula 1 can be designed to be smaller, making it easier to insert into the body.
[0056] Reference Figure 1 and Figure 2 Furthermore, the circumferential outer surface of the flexible sleeve 22 includes at least one plane or arc surface.
[0057] This design allows the flat or curved surface of the flexible sleeve 22 to cover the prostate surface, increasing the heating range and optimizing the heating effect.
[0058] Reference Figure 1 and Figure 2 In this embodiment, the flexible sleeve 22 is cuboid in shape, and the corners are rounded.
[0059] The front edge of sleeve 1 is rounded.
[0060] This design serves two purposes: firstly, it prevents scratching the heat therapy head 2 when retracting it into the sleeve 1; secondly, it prevents scratching human tissue when inserted into the body.
[0061] Reference Figure 1 and Figure 2 Optionally, the prostate tumor hyperthermia system further includes a vibrator 6, which is mounted on the drive end of the drive assembly 3 and connected to the hyperthermia head 2 to drive the hyperthermia head 2 to vibrate. In this embodiment, the active end of the vibrator 6 is fixed to the rigid head 21, and the flexible sleeve 22 covers the vibrating head.
[0062] Reference Figure 1 and Figure 2 The vibrator 6 drives the heat therapy head 2 to vibrate, and massages the prostate while providing heat therapy, thus optimizing the heat therapy effect.
[0063] Furthermore, the prostate tumor hyperthermia system also includes a pressure sensor disposed at the front end of the hyperthermia head 2. In this embodiment, the pressure sensor is mounted at the front end of the flexible sleeve 22.
[0064] This setup allows for monitoring of the pressure at the tip of the heat therapy head 2 via a pressure sensor, making it easy to determine whether the heat therapy head 2 is pressed firmly against the prostate or surrounding tissues, thus preventing the heat therapy head 2 from being over-inserted and damaging the tissue.
[0065] Reference Figure 1 and Figure 2 The drive assembly 3 includes a connecting rod 31, a sliding frame 32, and a lead screw mechanism 33.
[0066] Reference Figure 1 and Figure 2 The connecting rod 31 is slidably arranged inside the sleeve 1 along its length, and one end of the connecting rod 31 is connected to the heat therapy head 2. The sliding frame 32 is slidably disposed on the inner wall of the sleeve 1 along its length. The screw mechanism 33 drives the sliding frame 32 to slide inside the sleeve 1 along its length.
[0067] With this configuration, the sliding frame 32 can be driven by the lead screw mechanism 33 to move the connecting rod 31, thereby causing the heat therapy head 2 to extend or retract into the sleeve 1.
[0068] Reference Figure 1 and Figure 2 Optionally, the prostate tumor hyperthermia system also includes a timer 7, which is attached to the rear end of the cannula 1.
[0069] This setting uses timer 7 to remind you of the heat therapy time, making it easier to control the heat therapy time according to the doctor's instructions.
[0070] This application provides a hyperthermia system for prostate tumors. A cannula 1 is first inserted into the rectum to facilitate the delivery of a hyperthermia head 2 into the body and close to the prostate. A drive assembly 3 then extends the hyperthermia head 2 from the cannula 1 and presses it against the prostate. A heating assembly 4 heats the hyperthermia head 2, thereby achieving hyperthermia of the prostate. While the heating assembly 4 is operating, a cooling medium circulates within the conduit 52 and the flow channel 51. By measuring the temperature of the cooling medium within the conduit 52, the temperature at the hyperthermia head 2 can be easily measured and estimated, thus preventing excessively high temperatures at the hyperthermia head 2 that could damage surrounding tissues. If the temperature is too high, the flow rate of the cooling medium in the flow channel 51 is increased to accelerate heat dissipation from the hyperthermia head 2, lowering its temperature and preventing damage to the surrounding prostate tissues.
[0071] In the description of this application, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and 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, and therefore should not be construed as a limitation of this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.
[0072] It should be noted that in this application, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.
[0073] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.
Claims
1. A prostate tumor hyperthermia system, characterized in that, It includes: A cannula, the tip of which is adapted to extend into the body through the rectum; A heat therapy head, which is slidably disposed inside the cannula along the length of the cannula, and the heat therapy head is adapted to extend from the front end of the cannula and abut against the prostate. A driving component, the driving component being used to drive the movement of the heat therapy head; A heating assembly for heating the heat therapy head; A temperature control assembly includes a flow channel, two conduits, a heat exchanger, and a delivery pump. The flow channel is coiled around the heat therapy head. The two conduits are respectively connected to both ends of the flow channel. Both conduits are arranged inside a sleeve, and both conduits extend out of the sleeve near the rear end of the sleeve. The ends of the two conduits away from the flow channel are respectively connected to the inlet and outlet of the heat exchanger. The delivery pump is used to make the cooling medium flow within the flow channel and the conduits. Specifically, the temperature at the thermotherapy head is measured by measuring the temperature of the cooling medium inside the conduit at the inlet end of the heat exchanger.
2. The prostate tumor hyperthermia system according to claim 1, characterized in that, The heat therapy head includes: A rigid head, the driving assembly is drivingly connected to the rigid head, the heating assembly acts on the rigid head, and a gap is left between the rigid head and the circumferential inner side of the sleeve; A flexible sleeve is fitted onto the rigid head, and the flow channel is formed inside the flexible sleeve.
3. The prostate tumor hyperthermia system according to claim 2, characterized in that, When the flexible sleeve is inside the sleeve, it is in a compressed state; after the flexible sleeve extends out of the sleeve, the flexible sleeve recovers its deformation, and the cross-sectional area of the flexible sleeve is larger than the cross-sectional area of the sleeve.
4. The prostate tumor hyperthermia system according to any one of claims 1 to 3, characterized in that, The front edge of the sleeve is rounded.
5. The prostate tumor hyperthermia system according to claim 2, characterized in that, The circumferential outer surface of the flexible sleeve includes at least one plane or arc surface.
6. The prostate tumor hyperthermia system according to claim 1, characterized in that, It also includes a vibrator, which is installed on the drive end of the drive assembly and connected to the heat therapy head to drive the heat therapy head to vibrate.
7. The prostate tumor hyperthermia system according to claim 1, characterized in that, It also includes a pressure sensor, which is disposed at the front end of the thermotherapy head.
8. The prostate tumor hyperthermia system according to claim 1, characterized in that, The heating component includes a heating wire coiled around the surface of the heat therapy head.
9. The prostate tumor hyperthermia system according to claim 1, characterized in that, The driving component includes: A connecting rod is slidably arranged inside the sleeve along the length direction of the sleeve, and one end of the connecting rod is connected to the heat therapy head; A sliding frame, which is slidably disposed on the inner wall of the sleeve along the length direction of the sleeve; A lead screw mechanism drives the sliding frame to slide within the sleeve along the length of the sleeve.
10. The prostate tumor hyperthermia system according to claim 1, characterized in that, It also includes a timer, which is attached to the rear end of the sleeve.