A new type of vaginal brachytherapy implant needle

Abstract

The utility model relates to the field of radiotherapy discloses a novel vaginal brachytherapy implantation needle, including needle body structure, the rear end fixedly connected with the tail pipe of needle body structure, the rear end fixedly connected with the fixed head of tail pipe, the rear side wall center of fixed head is provided with through -hole, the front end of through -hole penetrates the rear side wall of fixed head and the rear side wall of tail pipe and reaches the front end, the needle body structure includes the body, the outside of body is provided with wear -resisting layer, the outside of wear -resisting layer is provided with antibacterial layer, the upper and lower both ends face center of needle body structure is provided with the section respectively at rear side edge, in the utility model, through setting wear -resisting layer can prolong the service life of whole, can directly provide antibacterial protection through setting the antibacterial layer outside wear -resisting layer, inhibits the growth of bacteria, reduces the risk of infection.

Description

Technical Field

[0001] This utility model relates to the field of radiotherapy, and in particular to a novel vaginal brachytherapy insertion needle. Background Technology

[0002] Following Röntgen's discovery of X-rays and Marie Curie's discovery of radium, radiotherapy was quickly applied to the clinical treatment of malignant tumors. Cervical cancer is the most common malignant tumor of the female reproductive system, and whole-pelvic external beam radiation therapy combined with intracavitary brachytherapy is currently the basic treatment method for cervical cancer.

[0003] Brachytherapy has been used in gynecological malignancies, especially cervical cancer, for nearly a century. It is an indispensable means in modern radiotherapy for cervical cancer, with the advantages of increasing the dose to the tumor site, protecting normal tissues, and reducing radiotherapy complications. Brachytherapy, which emerged in the 1980s, uses computer-controlled high-dose-rate miniature sources to achieve individualized treatment. Its advantages, such as convenience, short treatment time, and low radiation exposure for staff, have enabled high-dose-rate brachytherapy to be rapidly developed in gynecology and other fields.

[0004] Intracavitary afterloading therapy is classified into two-dimensional and three-dimensional intracavitary afterloading therapy based on the radiotherapy technique. Two-dimensional intracavitary afterloading therapy uses two types of applicators: a uterine cannula and two vaginal fornix cannulas. First, the uterine cannula applicator is inserted into the uterine cavity, and then two vaginal fornix cannulas are placed separately. The machine's built-in planning system then designs a two-dimensional treatment plan before administering the therapy to the patient. Traditional two-dimensional afterloading therapy can meet the needs of most intracavitary afterloading therapy cases. However, in patients with large tumors or recurrence of vaginal stump after cervical cancer surgery, two-dimensional afterloading technology may miss areas covered by the dose line, leading to insufficient tumor radiation dose. This further reduces the local tumor control rate and the patient's treatment effect. Therefore, two-dimensional intracavitary afterloading therapy has been phased out, and we have now entered the era of three-dimensional intracavitary afterloading therapy.

[0005] Three-dimensional afterloading intracavitary brachytherapy utilizes a rational arrangement and combination of uterine cannulas and vaginal implanted needles to encompass the entire tumor tissue to be irradiated within the target area. Depending on the patient and the specific tumor, a corresponding number of implanted needles can be selected. During the placement of the applicator, the needles are specifically implanted into the tumor. Then, CT simulation images and target area delineation are performed, followed by radiotherapy planning within the planning system. After the radiotherapy plan is designed, the implanted needle applicator is connected to the radiotherapy machine via different channels for three-dimensional intracavitary brachytherapy. However, in clinical practice, due to the use of a large number of implanted needles, some needles may cross over, potentially causing small errors when connecting the tubing to the machine channels, thus affecting the patient's treatment.

[0006] To address the phenomenon of overlapping interpolations, we sometimes use template interpolation to further reduce the probability of overlap. However, for certain special patients, template interpolation cannot be used, and manual interpolation is the only option. This places higher demands on medical professionals. Furthermore, since the vagina is a multi-bacterial environment, even slight carelessness can lead to the risk of infection. Therefore, those skilled in the art have provided a novel vaginal brachytherapy insertion needle to solve the problems mentioned in the background section. Utility Model Content

[0007] The purpose of this invention is to address the shortcomings of existing technologies by proposing a novel vaginal brachytherapy implantation needle. By incorporating a wear-resistant layer, its overall lifespan is extended. Simultaneously, by setting an antibacterial layer on the outside of the wear-resistant layer, it directly provides antibacterial protection, inhibiting bacterial growth and reducing the risk of infection. Furthermore, it features two cut surfaces on which numerical serial numbers can be engraved, facilitating the use of specific needle structures at designated locations. Even if implantation needles overlap, the corresponding numbered needle can be identified based on the pre-designed location, improving the accuracy of target area design and work efficiency, ensuring patients can receive treatment normally, and thus improving the overall treatment effect and quality of life for patients.

[0008] To achieve the above objectives, the present invention provides the following technical solution: a novel vaginal brachytherapy implantation needle, comprising a needle body structure, a tail tube fixedly connected to the rear end of the needle body structure, a fixing head fixedly connected to the rear end of the tail tube, a through hole provided at the center of the rear sidewall of the fixing head, and the front end of the through hole penetrating the rear sidewall of the fixing head and the rear sidewall of the tail tube and extending to the front end. The needle structure includes a body, a wear-resistant layer is provided on the outer side of the body, and an antibacterial layer is provided on the outer side of the wear-resistant layer. A cut surface is provided at the rear edge of the center of the upper and lower end faces of the needle body structure; The above technical solution extends the overall service life by adding a wear-resistant layer. Simultaneously, an antibacterial layer on the outside of the wear-resistant layer provides direct antibacterial protection, inhibiting bacterial growth and reducing the risk of infection. Furthermore, the two cut surfaces allow for the engraving of numerical numbers, facilitating the use of specific needle structures at designated locations. Even if the implanted needles overlap, we can still identify them based on the pre-designed location and corresponding number, improving the accuracy and efficiency of target area design, ensuring patients receive normal treatment, and ultimately enhancing overall treatment outcomes and quality of life.

[0009] Furthermore, the tailpipe and the fixing head are an integral structure; The above technical solution makes the system more stable during use.

[0010] Furthermore, the material of the body is 316L stainless steel; Through the above technical solution, this stainless steel contains molybdenum, which has higher corrosion resistance and biocompatibility.

[0011] Furthermore, the wear-resistant layer is made of silicon carbide nano-coating; The above technical solutions reduce friction and extend service life.

[0012] Furthermore, the antibacterial layer is made of nano-silver; The above technical solutions can directly provide antibacterial protection, inhibit bacterial growth, and reduce the risk of infection.

[0013] Furthermore, the front end of the body is a three-beveled needle; The above technical solutions reduce puncture resistance and minimize tissue damage.

[0014] Furthermore, the length of the needle tip at the front end of the body is 1.5cm to 3cm; The above technical solutions ensure that the target organization can be achieved during use.

[0015] This utility model has the following beneficial effects: In this invention, the wear-resistant layer can extend the overall service life, and the antibacterial layer on the outside of the wear-resistant layer can directly provide antibacterial protection, inhibit bacterial growth, and reduce the risk of infection.

[0016] In this invention, by setting two cut surfaces, numerical numbers can be engraved on the cut surfaces, which facilitates the use of a specific needle structure at a designated position during use. In this way, even if the implanted needles cross, we can still identify them according to the pre-designed position and the corresponding number of implanted needles, which improves the accuracy of target area design and work efficiency, ensures that patients can receive normal treatment, and thus improves the overall treatment effect and quality of life of patients. Attached Figure Description

[0017] Figure 1 This is an isometric view of a novel vaginal brachytherapy insertion needle proposed in this utility model; Figure 2 Another perspective is shown in the isometric view of a novel vaginal brachytherapy insertion needle proposed in this utility model. Figure 3 This is a side view of a novel vaginal brachytherapy insertion needle proposed in this utility model; Figure 4 This is a frontal sectional view of a novel vaginal brachytherapy insertion needle proposed in this utility model.

[0018] Legend: 1. Needle body structure; 101. Body; 102. Wear-resistant layer; 103. Antibacterial layer; 2. Cut surface; 3. Tail tube; 4. Through hole; 5. Fixing head. Detailed Implementation

[0019] The technical solutions of the present utility model 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 utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Reference Figure 1-4 An embodiment of this utility model is provided: a novel vaginal brachytherapy implantation needle, including a needle body structure 1, a tail tube 3 fixedly connected to the rear end of the needle body structure 1, a fixing head 5 fixedly connected to the rear end of the tail tube 3, a through hole 4 provided at the center of the rear side wall of the fixing head 5, and the front end of the through hole 4 penetrating the rear side wall of the fixing head 5 and the rear side wall of the tail tube 3 and extending to the front end. The needle structure 1 includes a body 101, a wear-resistant layer 102 is provided on the outer side of the body 101, and an antibacterial layer 103 is provided on the outer side of the wear-resistant layer 102. By providing the wear-resistant layer 102, the overall service life can be extended. At the same time, by providing the antibacterial layer 103 on the outer side of the wear-resistant layer 102, antibacterial protection can be directly provided, inhibiting bacterial growth and reducing the risk of infection.

[0021] A cut surface 2 is provided at the rear edge of the center of the upper and lower end faces of the needle body structure 1. A number can be engraved on the cut surface 2 to facilitate the use of a specific needle body structure 1 at a specific position. In this way, even if the implanted needles cross, we can identify them according to the pre-designed position and the corresponding number of implanted needles. This improves the accuracy of target area design and work efficiency, ensures that patients can receive normal treatment, and thus improves the overall treatment effect and quality of life of patients.

[0022] The tail tube 3 and the fixing head 5 are integrated into a single structure, making them more stable during use. The body 101 is made of 316L stainless steel, which contains molybdenum and has higher corrosion resistance and biocompatibility. The wear-resistant layer 102 is made of silicon carbide nano-coating, which reduces friction and extends service life. The antibacterial layer 103 is made of nano-silver, which can directly provide antibacterial protection, inhibit bacterial growth, and reduce the risk of infection. The front end of the body 101 is a three-beveled needle, which reduces puncture resistance and tissue damage. The length of the needle tip at the front end of the body 101 is 1.5cm to 3cm, ensuring that the target tissue can be reached during use.

[0023] Working Principle: This utility model is a novel vaginal brachytherapy implant needle. By setting a wear-resistant layer 102, the overall service life can be extended. At the same time, by setting an antibacterial layer 103 on the outside of the wear-resistant layer 102, it can directly provide antibacterial protection, inhibit bacterial growth, and reduce the risk of infection. By setting a cut surface 2 at the rear edge of the center of the upper and lower end faces of the needle body structure 1, a number can be engraved on the cut surface 2, which makes it convenient to use a specific needle body structure 1 at a specific position during use. In this way, even if the implanted needles overlap, we can identify the corresponding numbered implanted needle according to the pre-designed position, which improves the accuracy of target area design and work efficiency, ensures that patients can receive normal treatment, and thus improves the overall treatment effect and quality of life of patients.

[0024] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A novel vaginal brachytherapy implantation needle, comprising a needle body structure (1), characterized in that: The tail tube (3) is fixedly connected to the rear end of the needle body structure (1), and the tail tube (3) is fixedly connected to the rear end of the fixed head (5). A through hole (4) is provided at the center of the rear side wall of the fixed head (5). The front end of the through hole (4) penetrates the rear side wall of the fixed head (5) and the rear side wall of the tail tube (3) and leads to the front end. The needle structure (1) includes a body (101), a wear-resistant layer (102) is provided on the outside of the body (101), and an antibacterial layer (103) is provided on the outside of the wear-resistant layer (102). Cut surfaces (2) are respectively provided at the rear edge of the center of the upper and lower end faces of the needle body structure (1).

2. The novel vaginal brachytherapy implantation needle according to claim 1, characterized in that: The tail tube (3) and the fixing head (5) are an integral structure.

3. The novel vaginal brachytherapy implantation needle according to claim 1, characterized in that: The body (101) is made of 316L stainless steel.

4. The novel vaginal brachytherapy implantation needle according to claim 1, characterized in that: The wear-resistant layer (102) is made of silicon carbide nano-coating.

5. A novel vaginal brachytherapy implantation needle according to claim 1, characterized in that: The antibacterial layer (103) is made of nano-silver.

6. A novel vaginal brachytherapy implantation needle according to claim 1, characterized in that: The front end of the body (101) is a three-beveled needle.

7. A novel vaginal brachytherapy implantation needle according to claim 1, characterized in that: The length of the needle tip at the front end of the body (101) is 1.5cm to 3cm.

Images