Cervical treatment support carrying radioactive particles

Abstract

The utility model relates to the field of medical instruments, in particular to a cervix uteri treatment support carrying radioactive particles, which comprises a tube body, a balloon, a particle support, a cleaning tube, a cleaning joint, a water injection tube, a water injection joint, a push rod and a lifting rod. According to the cervix uteri treatment support carrying the radioactive particles, the balloon and the bowl-shaped particle support are fixed front and back, so that particle radiation of the tube body and the particle support can conduct accurate treatment on a patient part, and radiation damage to other healthy tissue caused by dislocation, slippage, escape and the like can be avoided. The treatment support can be released once until the treatment course is finished without repeated release, so that the time of doctors is saved, the pain of patients is relieved, and the operation is simple, convenient and practical.

Description

Technical Field

[0001] This utility model relates to the field of medical devices, and more specifically, to a cervical treatment support carrying radioactive particles. Background Technology

[0002] Cervical cancer is one of the most common gynecological malignancies and a leading cause of cancer-related deaths among women worldwide. Globally, its incidence rate ranks only after breast cancer, colorectal cancer, and lung cancer. According to the latest statistics from the International Agency for Research on Cancer, there were approximately 604,000 new cases of cervical cancer and 342,000 deaths globally in 2020. In recent years, interventions such as HPV vaccination and screening programs have improved the early diagnosis rate of cervical cancer. However, due to limited resources and limited coverage, its incidence rate continues to rise significantly in most low- and middle-income countries and regions, with a 5-year survival rate of only 16.5% for patients with metastatic cervical cancer.

[0003] In recent years, the incidence of cervical cancer in my country has been increasing year by year, and the age of onset is becoming increasingly younger. Radiotherapy, as a major treatment for cervical cancer, is widely used in clinical practice. Radiotherapy includes external beam radiation and brachytherapy, with brachytherapy being an indispensable method in the treatment of cervical cancer.

[0004] Brachytherapy, as an adjunct to external beam radiation therapy, follows the inverse square law: the dose is higher closer to the radiation source and lower further away. This law allows the radiation source to more effectively kill tumors while protecting surrounding healthy tissues. Therefore, the accuracy of brachytherapy positioning is a crucial factor in the quality of treatment, directly impacting patient outcomes and the occurrence of complications.

[0005] Brachytherapy tools for cervical cancer mainly include single-tube and triple-tube applicators, which are currently widely used in intracavitary brachytherapy for cervical cancer. However, traditional single-tube and triple-tube applicators offer poor protection for normal tissues such as the bladder and rectum. Furthermore, triple-tube applicators are often difficult to fix and prone to slippage. If displacement occurs during radiotherapy, it severely impacts the quality of intracavitary brachytherapy, reducing the radiation dose to tumor tissue while increasing the dose to normal tissue. With traditional triple-tube applicators, both anteroposterior and lateral radiographs are required each time the applicator is placed to confirm its position, increasing treatment time, patient costs, and radiation exposure. Utility Model Content

[0006] To address the aforementioned problems, the purpose of this invention is to provide a cervical treatment support that carries radioactive particles.

[0007] The objective of this utility model is achieved through the following technical solution:

[0008] This utility model provides a cervical treatment support carrying radioactive particles, comprising: a tube body, a balloon, a particle support, a cleaning tube, a cleaning connector, a water injection tube, a water injection connector, a push rod, and a lifting rod;

[0009] The tube is hollow and contains a fluid drainage channel, a balloon injection channel, and a cleaning channel. A balloon and a particle holder are sequentially arranged on the tube wall towards the rear end. The fluid drainage channel is the main channel running through the tube. The front opening of the balloon injection channel connects to the balloon, and the rear end of the balloon injection channel connects to an injection tube and an injection connector. The front opening of the cleaning channel is located on the tube wall between the balloon and the particle holder, and the rear end of the cleaning channel connects to a cleaning tube and a cleaning connector. The particle holder is bowl-shaped and faces the balloon. Radioactive particles are mounted on the tube wall between the balloon and the particle holder, and radioactive particles are also mounted on the particle holder.

[0010] The front end of the push rod is connected to a lifting rod, the shape of which is adapted to the inner cavity of the tube. When in use, the lifting rod is inserted into the tube to push the tube forward.

[0011] Furthermore, the radioactive particles are iodine-125 radioactive particles.

[0012] Furthermore, several particle chamber strips are provided on the tube wall between the balloon and the particle holder. Each particle chamber strip includes several individual particle chambers, and the particle chambers are equipped with radioactive particles.

[0013] Furthermore, the particle holder is provided with several particle chamber strips, each containing several particle chambers, and the particle chambers are equipped with radioactive particles.

[0014] Furthermore, the tube is long and cylindrical, and is made of rigid transparent PP material.

[0015] Furthermore, the balloon is a compliant balloon that surrounds the tube body.

[0016] Furthermore, the particle holder gradually thins from the bottom to the edge. The particle holder is made of soft silicone material, and its bowl-shaped structure matches the shape of the annular protrusion of the external os of the human cervix.

[0017] Furthermore, the cleaning pipe, cleaning connector, water injection pipe, and water injection connector are all made of soft materials.

[0018] Furthermore, a guide head is provided at the front end of the lifting bar.

[0019] Furthermore, a handle is connected to the rear end of the push rod, and a grip is provided at the rear end of the handle.

[0020] This utility model relates to a cervical treatment support carrying radioactive particles. The balloon and the bowl-shaped particle support are fixed at the front and back, allowing the particle radiation from the tube and support to precisely treat the affected area without misalignment, slippage, or reversal that could damage other healthy tissues. This treatment support can be released in one session until the end of the treatment course, eliminating the need for multiple releases, saving doctors' time, reducing patient discomfort, and offering simple and convenient operation. Attached Figure Description

[0021] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0022] Figure 1 This is an overall structural diagram of the cervical treatment support carrying radioactive particles according to this utility model;

[0023] Figure 2 This is a structural diagram of the tube body of the cervical treatment support carrying radioactive particles according to this utility model;

[0024] Figure 3 This is an axial cross-sectional view of the tube body of the cervical treatment support carrying radioactive particles according to this utility model.

[0025] Figure 4 This is a radial cross-sectional view of the tube body of the cervical treatment support carrying radioactive particles according to this utility model.

[0026] Figure 5 This is a cross-sectional view of the particle holder in the cervical treatment support carrying radioactive particles of this utility model.

[0027] The attached diagram is labeled as follows: 1. Tube body; 2. Balloon; 3. Particle holder; 4. Cleaning tube; 5. Cleaning connector; 6. Injection tube; 7. Injection connector; 8. Push rod; 9. Lifting rod; 10. Body fluid self-drainage channel; 11. Balloon water injection channel; 12. Cleaning channel; 13. Radioactive particles; 14. Particle chamber strip; 15. Particle chamber; 16. Guide head; 17. Handle; 18. Handle. Detailed Implementation

[0028] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0029] like Figures 1 to 5As shown, in order to solve the technical problems existing in the prior art, this utility model provides another applicator for radiotherapy of cervical cancer, namely a convenient and practical cervical treatment support carrying iodine-125 radioactive particles.

[0030] The cervical treatment support carrying iodine-125 radioactive particles consists of a tube body 1, a balloon 2, a bowl-shaped particle support 3, an inflation section, a cleaning section, and a pushing section.

[0031] The cervical treatment support body 1 carrying iodine-125 radioactive particles is a long, cylindrical, hollow tube 1 with a diameter of 5-8 mm and a length of 60-90 mm. The tube wall thickness is 0.8-1 mm. The tube body 1 is made of rigid transparent PP material. A conformable balloon 2 surrounds the tube body 1 30-40 mm from the front end. The balloon 2 can be filled with 8-15 ml of water, leaving a 3-5 mm clearance at the front end of the tube body 1. A bowl-shaped particle holder 3 is located 10-20 mm from the tube opening at the rear end of the tube body 1. The bowl-shaped particle holder 3 gradually thins from the bottom to the edge. The particle holder 3 is made of soft silicone material, and its bowl-shaped structure conforms to the shape of the annular protrusion of the external os of the cervix. The soft, thin edge makes it more comfortable for the patient to wear, so that after the tube body 1 is inserted into the cervix, the bowl-shaped particle holder 3 adheres to the annular protrusion of the external os of the cervix. After the front end of tube 1 passes through the cervix and reaches the uterine cavity, water is injected into balloon 2. The expansion of balloon 2 compresses the uterine wall at the cervix, which makes the bowl-shaped particle support 3 fit better with the annular protrusion of the cervix, so that tube 1 is firmly fixed in the cervical cavity.

[0032] The tube 1 carrying iodine-125 cervical particle support 3 has two particle chamber strips 14 attached to its inner wall. These strips are laid axially along the tube 1, between the rear of the balloon 2 and the front of the bowl-shaped particle chamber 15. The two strips 14 are symmetrically distributed on both sides of the tube wall. Each strip has 3-4 individual particle chambers 15, capable of holding 3-4 particles. Each particle chamber 15 is a long cylindrical structure with its inlet extending from the outer wall of the tube 1 in a sloping shape. The outer opening of the inlet is smaller than the particle diameter to prevent the particles from slipping out. Inside the bowl-shaped particle support 3, along the inner edge of the bowl extending from the bottom, four symmetrically distributed particle chamber strips 14 are also provided, each capable of holding 1-2 particles. The particle chambers 15 here have the same structure as those in the tube 1. This design allows doctors to appropriately fill the required number of particles based on the location of the cervical cancer, and the bowl-shaped particle holder 3 particles are better suited for radiation therapy on more areas of the cervix. The dual fixation of the airbag and particle holder 3 ensures more stable particle irradiation, preventing slippage or loosening.

[0033] The iodine-125 cervical particle support tube 1 has three channels: a balloon water injection channel 11, a washing channel 12, and a body fluid self-drainage channel 10. The balloon water injection channel 11 and washing channel 12 are relatively small, while the body fluid self-drainage channel 10 is the main channel penetrating the tube 1 and occupies a larger proportion. The balloon water injection channel 11 is connected to a soft water injection tube 6 at the rear end of the tube 1. The end of the water injection tube 6 has a soft water injection connector 7 with a one-way valve structure to prevent water loss or leakage from the balloon 2. The balloon water injection channel 11 of the tube 1 opens into the balloon 2 at the front end of the cervical particle support tube 1, allowing water entering through the injection port to quickly reach the inside of the balloon 2, inflating it. The washing channel 12 of the cervical particle support tube 1 is connected to a soft washing tube 4 at the rear end of the tube 1. The end of the soft washing tube 4 has a soft washing connector 5. The washing connector 5 also has a one-way valve structure. The cleaning channel 12 of tube body 1 opens into the outer wall between balloon 2 and particle holder 3. The fluid self-drainage channel 10 of tube body 1 is for the self-drainage of menstrual fluids and other bodily fluids from the uterine cavity. Since the cervical treatment holder is placed for up to 60 days, the patient's menstrual flow can be discharged spontaneously through the fluid self-drainage channel 10 without interrupting treatment. The cleaning channel 12 is designed to create a closed space between the balloon 2 and the bowl-shaped particle holder 3, which are positioned at the front and back of the cervix. Prolonged placement of the cervical treatment holder can lead to bacterial growth and inflammation within the cervical cavity. For hygiene and treatment of the cervical cavity, medication or cleaning solution can be injected through the cleaning channel 12 to clean and treat the cervical cavity. When cleaning the cervical cavity, the cleaning solution can be pushed into the cervical cavity for rinsing, and then the residual fluid can be immediately withdrawn. This process can be repeated until the cavity is clean. When treating the cervical cavity, medication can be pushed into the cervical cavity and left there until the medication takes effect, after which the residual fluid can be withdrawn. Since both the connecting tube and the connector are made of soft material, they can be left in the vagina without causing discomfort to the patient.

[0034] The push rod 8 carrying the iodine-125 cervical treatment support is a long, cylindrical rod with a certain degree of rigidity and support. At the front end of the push rod 8, corresponding to the length of the iodine-125 cervical treatment support body 1, there is a lifting rod 9. The diameter of the lifting rod 9 is the same as the outer diameter of the cervical treatment support body 1. The front end of the lifting rod 9 is cylindrical, with an outer diameter slightly smaller than that of the cervical treatment support body 1, and has four symmetrically distributed grooves. These grooves are designed to accommodate the internal particle chamber 15, water injection channel, and cleaning channel 12 of the cervical treatment support body 1, allowing the push rod 8 to pass through the cervical treatment support body 1. The front end of the lifting rod 9 has an outwardly protruding conical guide head 16 originating from the edge of the cervical treatment support's tube wall, facilitating the smooth passage of the cervical treatment support through the cervix. The rear end of the lifting rod 9 is a handle 17. The front end of the handle 17, extending backward from the lifting rod 9, has two clearance grooves corresponding to the soft inflation tube and soft cleaning tube 4. The handle 17 is 10-15cm long, and has a flat, round handle 18 at its rear end. The handle 18 has circular grooves on both sides of its platform. The push rod 8 facilitates the doctor's operation in fixing the cervical treatment support to the patient's cervix. The grooves in the handle 18 allow the doctor to further adjust the operation by squeezing the push rod 8 after it is inserted into the vagina.

[0035] The method of using this utility model is as follows:

[0036] 1. Remove the cervical treatment support carrying iodine-125 radioactive particles.

[0037] 2. Fill the particle protection operation box with the particles required according to the patient's cancer condition.

[0038] 3. Use a vaginal speculum to open the vagina.

[0039] 4. Place the cervical treatment support carrying iodine-125 radioactive particles onto the push rod 8, apply lubricant, and gently push it into the cervical cavity until the bowl-shaped particle support 3 is fully attached to the external os of the cervix.

[0040] 5. Use a syringe to push 8-15 ml of normal saline through the water injection connector 7 to inflate the balloon 2, which, together with the bowl-shaped particle holder 3, secures the cervix.

[0041] 6. Pull out the push rod 8, insert the water inlet connector 7 and the cleaning connector 5 into the vagina, and then remove the vaginal speculum.

[0042] 7. When performing regular rinsing or cervical cavity treatment, the cleaning connector can be removed from the vagina during operation 5, without needing to remove the cervical treatment support.

[0043] The beneficial effects of this utility model are as follows:

[0044] 1. The tube body has a diameter of 5-8 mm and a diameter of 60-90 mm, which can perfectly adapt to the cervical cavity of women of all ages and reproductive stages.

[0045] 2. The front and rear fixation of the balloon 2 and the bowl-shaped particle holder 3 ensures that the particle radiation from the tube 1 and the particle holder 3 can accurately treat the affected area without causing radiation damage to other healthy tissues due to misalignment, slippage, or reversal.

[0046] 3. The bowl-shaped particle holder 3 conforms to the physiological shape of the external os of the cervix, making the particles in tube 1 and the particles in bowl-shaped particle holder 3 more precise and effective in treating cervical tumors.

[0047] 4. The particle chamber 15, which carries the iodine-125 cervical treatment support body 1 and the bowl-shaped particle holder 3, is distributed so that doctors can fill the required particles according to the radiation dose required by the cancerous changes in the patient's diseased area, and carry out precise radiation treatment.

[0048] 5. The flexibility of the compliant balloon 2 allows for a closer fit to the uterine wall and better conforms to the physiological curvature and indentation of the uterine wall.

[0049] 6. This treatment can be released in one session until the end of the treatment course, eliminating the need for multiple releases, saving doctors time and reducing patient discomfort.

[0050] 7. The liquid self-drainage channel allows radiation therapy to continue without interruption during menstruation, resulting in better efficacy at cancerous sites.

[0051] 8. The cleaning channel 12 allows for the flushing, disinfection, and treatment of the patient's cervical cavity. This facilitates the doctor's operation. Even patients and their families can perform routine cleaning and disinfection procedures themselves under the doctor's guidance, saving a significant amount of medical resources and making it extremely convenient and practical.

[0052] 9. Both the water injection connector 7 and the cleaning connector 5 are made of soft material and are normally stored in the patient's vagina, without interfering with or affecting the patient's work and life, greatly facilitating the patient and providing a better treatment experience. Furthermore, the water injection connector 7 uses a one-way valve structure to ensure that the balloon 2 does not collapse after water injection, maintaining the stability of the cervical particle support 3 carrying iodine-125 radioactive particles at the cervix.

[0053] 10. The design of the push rod 8 allows doctors to easily insert the cervical treatment support carrying iodine-125 radioactive particles into the cervical cavity without needing to borrow other tools.

[0054] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A cervical treatment support carrying radioactive particles, characterized in that, include: Tube body, balloon, particle holder, cleaning tube, cleaning connector, water injection tube, water injection connector, push rod, lifting rod; The tube is hollow and contains a fluid drainage channel, a balloon injection channel, and a cleaning channel. A balloon and a particle holder are sequentially arranged on the tube wall towards the rear end. The fluid drainage channel is the main channel penetrating the tube. The front opening of the balloon injection channel communicates with the balloon, and the rear end of the balloon injection channel is sequentially connected to the injection tube and the injection connector. The front opening of the cleaning channel is located on the tube wall between the balloon and the particle holder, and the rear end of the cleaning channel is sequentially connected to the cleaning tube and the cleaning connector. The particle holder is bowl-shaped and faces the balloon. Radioactive particles are mounted on the tube wall between the balloon and the particle holder, and radioactive particles are also mounted on the particle holder. The front end of the push rod is connected to the lifting rod, and the shape of the lifting rod is adapted to the inner cavity of the tube. When in use, the lifting rod is inserted into the tube and drives the tube to push forward.

2. The radioactive particle carrying cervical treatment applicator according to claim 1, wherein, The radioactive particles are iodine-125 radioactive particles.

3. The radioactive seed carrying cervical treatment applicator of claim 1, wherein, Several particle chamber strips are provided on the tube wall between the balloon and the particle holder. Each particle chamber strip includes several individual particle chambers, and the particle chambers are equipped with the radioactive particles.

4. The radioactive seed carrying cervical treatment applicator of claim 1, wherein, The particle holder is provided with a number of particle chamber strips, each of which includes a number of particle chambers, and the particle chambers are equipped with the radioactive particles.

5. The radioactive seed carrying cervical treatment applicator of claim 1, wherein, The tube is long and cylindrical, and is made of rigid transparent PP material.

6. The radioactive seed carrying cervical treatment applicator of claim 1, wherein, The balloon is a compliant balloon that surrounds the tube.

7. The radioactive seed carrying cervical treatment applicator of claim 1, wherein, The particle holder gradually thins from the bottom to the edge. The particle holder is made of soft silicone material. The bowl-shaped structure of the particle holder matches the shape of the annular protrusion of the external os of the human cervix.

8. The radioactive seed carrying cervical treatment applicator of claim 1, wherein, The cleaning pipe, cleaning connector, water injection pipe, and water injection connector are all made of soft materials.

9. The radioactive seed carrying cervical treatment applicator of claim 1, wherein, The lifting rod is equipped with a guide head at its front end.

10. The radioactive seed carrying cervical treatment applicator of claim 1, wherein, The push rod is connected to a handle at its rear end, and the handle is provided with a grip at its rear end.

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