A drainage tube and a drainage kit
By designing a drainage tube with a detachable placement tube and particle loading structure, the problems of difficulty and loss in radioactive particle loading were solved, enabling rapid and safe particle loading and retrieval, and reducing doctors' radiation exposure.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 安徽医创联医疗科技有限公司
- Filing Date
- 2025-06-23
- Publication Date
- 2026-06-19
Smart Images
Figure CN224370326U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of medical device technology, and in particular to a drainage tube and drainage kit. Background Technology
[0002] Malignant obstructive jaundice is a common clinical condition, often caused by malignant tumors obstructing the bile duct. When the tumor cannot be surgically removed, percutaneous hepatic biliary drainage is currently used clinically to drain bile out of the body. However, studies have shown that bile loss affects the patient's digestive and absorptive functions, and the drained bile needs to be reinfused into the body. Simultaneously, radioactive particle therapy is required to treat the tumor tissue.
[0003] Currently, in clinical practice, forceps are used to manually load radioactive particles into drainage tubes. However, due to the small size of the radioactive particles, they are easily lost during the process. Furthermore, manual loading is slow and time-consuming, and doctors are exposed to the radiation area for a long time, making it inconvenient for the placement and retrieval of radioactive particles. Utility Model Content
[0004] The main purpose of this utility model is to provide a drainage tube and drainage kit to solve existing technical problems.
[0005] To achieve the above objectives, this utility model provides a drainage tube, comprising:
[0006] The main drainage pipe has drainage holes on it;
[0007] A placement tube containing radioactive particles is provided inside the main drainage tube and is detachable from the main drainage tube.
[0008] Furthermore, the drainage main tube has a single-cavity structure.
[0009] Furthermore, the drainage main tube has a dual-cavity structure.
[0010] Furthermore, the first end of the drainage tube is connected to a pig tail tube.
[0011] Furthermore, it also includes a through hole, which is provided on the main drainage pipe or the pig tail tube.
[0012] Furthermore, the second end of the main drainage pipe is connected to the branch pipe via a T-junction.
[0013] Furthermore, the drainage holes are provided in 2-6 portions.
[0014] Furthermore, the drainage tube is provided with a imaging ring.
[0015] A drainage tube kit, comprising,
[0016] Such as the drainage tube mentioned above; and,
[0017] A particle loading structure includes a base, a particle placement cavity within the base, a push rod within the particle placement cavity, and a connection port for docking with a placement tube.
[0018] Furthermore, this also includes conventional guidewires and visual guidewires.
[0019] The beneficial effects of this utility model are reflected in:
[0020] This invention places radioactive particles in a placement tube and then places the placement tube in a drainage tube. This not only makes it easier for workers to load the radioactive particles into the drainage tube, preventing them from falling out, but also facilitates the subsequent recovery of the radioactive particles.
[0021] The tubes of this invention have complete functions that do not interfere with each other, and can be used for bile drainage, particle radiotherapy, and intestinal nutrition.
[0022] The particle loading speed of this invention is superior to that of manual loading with tweezers, reducing loading time, reducing the doctor's radiation time, and avoiding particle loss caused by manual loading with tweezers. Attached Figure Description
[0023] Figure 1 This is a schematic diagram of the drainage tube structure of this utility model;
[0024] Figure 2 This is a schematic diagram of the main drainage pipe structure of this utility model;
[0025] Figure 3 This is a schematic diagram of the drainage tube structure with a three-way valve of this utility model;
[0026] Figure 4 This is a schematic diagram of the drainage tube structure with a pig tail tube of this utility model;
[0027] Figure 5 This is a schematic diagram of the dual-lumen drainage tube structure of this utility model;
[0028] Figure 6 This is a schematic diagram of the particle loading structure of this utility model;
[0029] Figure 7 This is a schematic diagram of the guide wire structure of this utility model;
[0030] Figure 8 This is a schematic diagram of the particle placement cavity structure of this utility model.
[0031] Explanation of reference numerals in the attached figures:
[0032] 100. Main drainage tube; 101. Drainage hole; 102. Through hole; 200. Placement tube; 201. Radioactive particle; 300. Pig tail tube; 400. T-junction; 500. Diverter tube; 600. Imaging ring; 700. Guide wire; 701. Camera; 702. Adjustable handle; 800. Base; 801. Particle placement chamber; 802. Push rod. Detailed Implementation
[0033] 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 a part of the embodiments of the present utility model, and not all of them. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present utility model.
[0034] Please see Figure 1 and 2 The present invention provides a drainage tube, including: a drainage main tube 100, on which a drainage hole 101 is provided;
[0035] The placement tube 200 contains radioactive particles 201. The placement tube 200 is located inside the drainage main tube 100 and is detachable from the drainage main tube 100.
[0036] The separable design of the placement tube 200 and the drainage main tube 100 means that the placement tube 200 can be taken out and put into the drainage main tube 100. In use, the placement tube 200 containing the radioactive particles 201 is placed into the drainage main tube 100 through the drainage hole 101 (placing the placement tube 200 in the drainage main tube 100 through the drainage hole 101 is one of the placement methods of the placement tube 200). Since the diameter of the placement tube 200 and the inner diameter of the drainage main tube 100 are compatible, the placement tube 200 will not move around a lot when placed in the drainage main tube 100.
[0037] Additionally, it should be noted that when radioactive particles 201 are placed inside placement tube 200 outside of drainage main tube 100, the tube can be deformed by pressure or high temperature, thereby achieving the effect of fixing radioactive particles 201.
[0038] Specifically, the placement tube 200 is composed of polymer materials (such as PVC, PE, etc.), with an inner diameter of 0.55mm-0.8mm and an outer diameter of 0.6mm-2mm. (For placement tube 200 used to place radioactive particles 201 with a specification of 0.8mm*4.5mm, the optimal inner diameter is 0.75mm and the outer diameter is 0.9mm; for placement tube 200 used to place radioactive particles 201 with a specification of 0.6mm*4.5mm, the optimal inner diameter is 0.55mm and the outer diameter is 0.7mm.) The length is 2cm-60cm, and doctors can cut it according to the placement length during use.
[0039] In one embodiment, please refer to Figure 1-4 The drainage tube 100 has a single-cavity structure.
[0040] In one embodiment, please refer to Figure 5 The drainage main tube 100 has a dual-lumen structure. The drainage main tube 100 is divided into two independent lumens by a partition wall. The tube body is manufactured using an extrusion process. One lumen is used for bile drainage, and the other lumen is used for the delivery of intestinal nutrient solution. This dual-lumen structure allows bile drainage and intestinal nutrient delivery to be achieved separately without affecting each other.
[0041] In one embodiment, please refer to Figure 4 and Figure 5 The first end of the drainage tube 100 is connected to the pig tail tube 300.
[0042] In one embodiment, please refer to Figure 1 , Figure 3 , Figure 4 and Figure 5 It also includes a through-hole 102, which is provided on the main drainage pipe 100 or the pig tail tube 300. Specifically, through the through-hole 102, the nutrient solution can be delivered into the intestine. It should be noted that the preferred embodiment of the through-hole 102 is that the main drainage pipe 100 is arranged with a double-lumen structure, in which case the nutrient solution input and bile output do not affect each other.
[0043] In one embodiment, please refer to Figure 3 and Figure 4 The second end of the main drainage pipe 100 is connected to the branch pipe 500 via a tee 400.
[0044] Specifically, the end of the shunt tube 500 is provided with a connector 501, and the placement tube 200 can be inserted at the tee 400 and placed into the main drainage tube 100 (putting the placement tube 200 into the main drainage tube 100 through the tee 400 is another way of placing the placement tube 200). The placement tube 200 can be removed without removing the tube, and the radioactive particle 201 can be replaced.
[0045] It should be noted that this embodiment can be implemented whether the drainage main tube 100 has a single-cavity structure or a double-cavity structure.
[0046] In one embodiment, the drainage hole 101 is provided with 2-6 holes.
[0047] In one embodiment, please refer to Figure 1 , Figure 3 , Figure 4 and Figure 5 The drainage tube 100 is equipped with a developing ring 600.
[0048] Specifically, the developing ring 600 is made of tantalum and is located 0.5cm-1cm away from the last drainage hole. It is used for positioning the tube 200 during the insertion of the drainage main tube 100.
[0049] This application also provides a drainage tube kit for installing radioactive particles 201 into a placement tube 200 and for performing drainage operations, including,
[0050] Such as the drainage tube mentioned above; and,
[0051] For particle loading structures, please refer to [link / reference]. Figure 6 It includes a base 800, a particle placement cavity 801 inside the base 800, a push rod 802 inside the particle placement cavity 801, and a connection port for docking with the placement tube 200.
[0052] In use, one end of the placement tube 200 is connected to the particle placement chamber 801, and then the radioactive particle 201 is pushed into the placement tube 200 by the push rod 802. The operation is simple and quick, reducing the risk of the radioactive particle 201 falling.
[0053] For details, please refer to Figure 8 The particle placement cavity 801 has a V-shaped or U-shaped structure. When the particles to be loaded are placed in the particle placement cavity 801, the radioactive particles 201 are arranged in the V-shaped (or U-shaped) structure.
[0054] The width of the particle placement area in the loading structure can be designed according to the number of particles to be stored (e.g., a width of 18.5mm can store 4 radioactive particles with a size of 0.8mm*4.5mm).
[0055] In one embodiment, please refer to Figure 7 It also includes conventional guidewires and visual guidewires 700;
[0056] The visual guide wire 700 has a camera 701 at the front end and an adjustable handle 702 at the rear end. The camera 701 is electrically connected to an external display device via a transmission line.
[0057] Specifically, the guidewire 700 is used to assist in the placement of the drainage tube. It is made of alloys such as nickel and titanium, as well as polymer materials, and has a coating on the surface to make the placement process smoother and reduce resistance during the placement process.
[0058] The guidewire 700 has a soft tip, which can avoid damaging human tissue. The camera 701 can be connected to observe the insertion process and determine the position.
[0059] By rotating the adjustable handle 702, the front end of the guide wire 700 is rotated, thereby changing the forward direction of the guide wire 700.
[0060] The transmission line is located inside the guide wire 700, and the tail end contains a connector for connecting to the display screen.
[0061] The guidewire 700 is 40cm-100cm in length and has graduations printed on its surface for easy observation of the length inserted into the human body.
[0062] The specific procedure for using the drainage tube in this application is as follows: The doctor selects the number of radioactive particles according to the patient's clinical needs, and the radioactive particles (such as I...) are then... 125 The particles are placed in the placement tube 200, which contains four radioactive particles 201. After the particles are placed in the placement tube 200, the placement tube 200 is deformed by pressure or by high temperature to fix the particles inside the placement tube 200 so that they are not easy to fall off. Then the placement tube 200 is inserted into the front end of the drainage tube 100, and the tube is inserted into the human body by drainage tube placement technique. The position of the drainage hole 101 is determined by the imaging ring 600. Drainage hole 101 is located inside the bile duct, and the radioactive particle segment is located near the tumor tissue. Bile is drained out of the body through drainage hole 101 on the tube body. Radioactive particle 201 is located at the tumor site to treat the tumor, and its position is located at the left end of drainage hole 101. When the patient needs to replace the radioactive particle or when the treatment is over, the drainage tube 100 is pulled out, and the radioactive particle 201 is pulled out together with the drainage tube 100. The placement tube 200 is taken out (this method of removal is through drainage hole 101, or it can be taken out at T-junction 400 when connected). The radioactive particle 201 is not easy to fall off and can be recovered.
[0063] It should be noted that if the embodiments of this utility model involve directional indicators such as up, down, left, right, front, back, etc., the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture as shown in the attached figure. If the specific posture changes, the directional indicators will also change accordingly.
[0064] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied. Furthermore, "multiple" refers to two or more. Moreover, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent.
[0065] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. 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 drainage tube, characterized in that... ,include: A drainage main pipe (100) is provided with a drainage hole (101); A placement tube (200) containing radioactive particles (201) is provided inside the drainage main tube (100) and is detachable from the drainage main tube (100).
2. A drainage tube as described in claim 1, characterized in that: The drainage main tube (100) has a single-cavity structure.
3. A drainage tube as described in claim 1, characterized in that: The drainage main tube (100) has a dual-cavity structure.
4. A drainage tube as described in any one of claims 1-3, characterized in that: The first end of the drainage tube (100) is connected to a pig tail tube (300).
5. A drainage tube as described in claim 4, characterized in that: It also includes a through hole (102) provided on the main drainage pipe (100) or the pig tail tube (300).
6. A drainage tube as described in any one of claims 1-3, characterized in that: The second end of the main drainage pipe (100) is connected to the branch pipe (500) via a tee (400).
7. A drainage tube as described in claim 1, characterized in that: The drainage hole (101) has 2-6 holes.
8. A drainage tube as described in claim 1, characterized in that: The drainage tube (100) is provided with a imaging ring (600).
9. A drainage tube kit, characterized in that: include, The drainage tube as described in any one of claims 1-8; as well as, The particle loading structure includes a base (800), the base (800) having a particle placement cavity (801), the particle placement cavity (801) having a push rod (802), and the particle placement cavity (801) having a connection port that connects with the placement tube (200).
10. A drainage tube kit as described in claim 9, characterized in that: It also includes conventional guidewires and visual guidewires (700).