Drainage tube set provided with particles and capable of adjusting positions of particles

Abstract

The utility model discloses a drainage tube set for containing particles and adjusting the positions of the particles, which comprises a drainage tube assembly consisting of a drainage tube body and a drainage tube seat, and is characterized in that the drainage tube assembly is also matched with a three-way joint which can be connected with the drainage tube seat; the particle loading tube can be inserted into the three-way connector and the drainage tube assembly, the three-way connector is of a T-shaped hollow structure with three connectors, a loading tube connector in the three connectors is further provided with a locking device in a matched mode, and the locking device is mainly composed of a locking cap and an elastic locking block. And the particle loading tube is of a hollow long-strip tubular structure with one closed end and is matched with a particle importer. The problem that the iodine 125 particles are left in the body of a patient for a long time to affect the body health of the patient for a long time is avoided, and when the iodine 125 particles need to be replaced or the positions of the iodine 125 particles need to be adjusted or the drainage tube is blocked, the drainage tube does not need to be integrally replaced, so that the pain of the patient and the treatment cost are greatly reduced.

Description

Technical Field

[0001] This utility model relates to the field of medical devices, specifically a portable drainage tube for inserting particles. Background Technology

[0002] In clinical medicine, when a patient has bile duct cancer, the tumor obstructs the bile duct, preventing normal bile flow and increasing intraductal pressure, which can lead to complications such as acute pancreatitis and biliary liver abscess. Current treatment methods for this condition involve using a drainage tube to pass through the narrowed area of ​​the bile duct to drain bile and reduce pressure above the narrowed area; simultaneously, radiotherapy with iodine-125 particles is used to treat the cancer cells at the narrowed site. Currently, the main methods used in the industry to place iodine-125 particles at the site of bile duct stricture in patients are: 1. Permanent placement: Iodine-125 particles are placed directly at the site of bile duct stricture using a particle needle or other placement device. The disadvantage of this permanent placement method is that the half-life of iodine-125 particles is approximately 60 days. Once permanently placed at the site of bile duct stricture, the iodine-125 particles are difficult to remove from the body. If not removed, they will remain permanently in the body and will not disappear naturally. Furthermore, after bile duct stricture occurs, the pressure above the stricture is usually too high, requiring stents or drainage to relieve pressure. This generally requires both the placement of radioactive particles and the insertion of catheters or stents for pressure relief, which cannot be done in one step. 2. The drainage tube is designed with a multi-lumen structure, such as a 3-lumen structure, with one lumen for drainage and the other two lumens for placing iodine-125. The disadvantages of this method of placing iodine-125 particles through a multi-lumen drainage tube are as follows: once the particles are placed inside the catheter cavity, they cannot be removed. When the catheter needs to be replaced, the particles also need to be replaced, and similarly, the catheter needs to be replaced when the particles are replaced, thus increasing the patient's costs. Moreover, the doctor needs to perform the catheter placement procedure again, causing pain to the patient. At the same time, the particle position cannot be easily adjusted. The existing method for adjusting the particle position is to judge the placement position based on experience under imaging, cut the particle fixing wire to the target length, insert the fixing wire into the particle cavity, and then put in the particle. Once the particle is placed, its position cannot be adjusted. Furthermore, in actual operation, the drainage tube is prone to blockage. Once blockage occurs, the drainage tube needs to be replaced, and the placed particles also need to be removed. Utility Model Content

[0003] The present invention provides a portable drainage tube for inserting particles, thereby addressing the shortcomings and deficiencies in the aforementioned background technology.

[0004] The technical problem solved by this utility model is achieved by the following technical solution:

[0005] A drainage tube assembly for emitting and adjusting the position of particles includes a drainage tube body that is closed at one end and hollow, and a drainage tube seat that is hollow and connected to the other end of the drainage tube body. The assembly is characterized by a T-shaped connector that connects to the drainage tube seat, and a particle loading tube that can be inserted into the T-shaped connector and the drainage tube assembly. The T-shaped connector is a hollow "T"-shaped structure with three interconnected joints. Two of the joints are drainage tube seat joints and drainage bag joints, respectively, and the third joint is a loading tube joint into which the particle loading tube can be inserted. The drainage tube seat joint and the loading tube joint are linearly connected. The loading tube joint is also equipped with a locking device, which mainly consists of a locking cap and an elastic locking block. One end of the locking cap is a hollow single-cavity structure, and the other end is a double-cavity structure with a large cavity surrounding a smaller cavity. The structure includes a large cavity with a threaded inner wall that matches the threaded outer wall of the loading tube connector, thus achieving a threaded connection between the large cavity and the loading tube connector. The loading tube connector has a locking cavity at one end, into which the locking cap can be inserted. The elastic locking block is hollow and installed in the locking cavity at the outer end of the small cavity. The single cavity at one end of the locking cap, the small cavity at the other end, the hollow cavity of the elastic locking block, the hollow cavity of the loading tube connector, and the hollow cavity of the drainage tube connector are all linearly connected. The particle loading tube is a hollow, elongated tubular structure closed at one end, with an exhaust port at the closed end and a hollow loading tube seat installed at the other end. This loading tube seat can be connected to one end of the single cavity structure of the locking cap. The particle loading tube is also equipped with a particle pusher wire for pushing iodine-125 particles into the particle loading tube body, and a particle fixing wire for fixing the position of the iodine-125 particles in the particle loading tube body.

[0006] In this invention, the particle loading tube is also equipped with a particle introducer that facilitates the placement of iodine-125 particles into the particle loading tube body. One end of the particle introducer is a conical hollow structure, and the other end is an open groove structure. The open groove is in a straight line connected to the hollow cavity at the conical end to form a through hole.

[0007] In this utility model, the tee connector is either a four-way connector with four connectors, or a structure with more than four connectors.

[0008] In this utility model, the drainage tube seat connector is connected to the drainage tube seat by a thread: a movable nut is provided on the drainage tube seat connector, and a thread matching the nut is opened on the outer wall of the drainage tube seat; the connection between the drainage tube seat connector and the drainage tube seat is either an insertion interference connection.

[0009] In this invention, the elastic locking block is an elastic rubber block.

[0010] In this utility model, the tee connector is also equipped with a plug that matches one end of the loading pipe seat and the single-cavity structure of the locking cap.

[0011] In this invention, the loading pipe body is made of soft PP material.

[0012] In this invention, the diameter of the hollow cavity of the loading tube is slightly larger than the diameter of the iodine-125 particles placed inside.

[0013] In this invention, the particle fixing line is a thin, long PVC line with a certain degree of rigidity.

[0014] In this invention, the particle pushing guide wire is made of stainless steel, which can push the particles into the closed end of the particle loading tube.

[0015] Beneficial effects: 1. This invention uses an independent particle loading tube to place iodine-125 particles at the site of bile duct stenosis for treatment. This allows for easy placement and removal of the iodine-125 particles by simply inserting or removing the independent particle loading tube into or from the drainage tube. In particular, the ability to remove the iodine-125 particles at any time effectively avoids the drawback of existing technologies where the particles remain in the patient's body long-term after treatment, thus preventing long-term health problems. 2. Since the iodine-125 particles are placed in the patient's body through an independent particle loading tube, when the treatment position needs to be adjusted, simply remove the particle loading tube, adjust its length, and then reinsert it into the drainage tube. Unlike existing technologies, which require replacing the entire drainage tube, this significantly reduces patient discomfort and treatment costs. 3. When the drainage tube becomes blocked, it can be cleared by pulling (or repeatedly pulling out and inserting) the particle loading tube inside the drainage tube. Existing technologies often require replacing the entire drainage tube. 4. When the iodine-125 particles need to be replaced, only the loading tube needs to be replaced, without replacing the entire drainage tube. These technological improvements not only prevent iodine-125 particles from remaining in the patient's body for extended periods, thus avoiding long-term health risks, but also eliminate the need to replace the entire drainage tube when iodine-125 particles need to be replaced or repositioned, or when the drainage tube becomes blocked, greatly reducing patient suffering and treatment costs. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the drainage tube assembly of this utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the tee connector of this utility model;

[0019] Figure 4 This is a cross-sectional view of the three-way connector of this utility model;

[0020] Figure 5 This is a schematic diagram of the particle loading tube of this utility model;

[0021] Figure 6 This is a front view of the particle introducer of this utility model;

[0022] Figure 7 This is a three-dimensional structural diagram of the particle introducer of this utility model.

[0023] Figure 8 This is a diagram showing the state of the elastic locking block after it has been compressed and deformed.

[0024] In the diagram: 1-Drainage tube body, 2-Drainage tube seat, 3-Drainage hole, 4-Marking ring, 5-Drainage tube seat connector, 6-Drainage bag connector, 7-Loading tube connector, 8-Locking cap, 9-Elastic locking block, 10-Large cavity wall, 11-Large cavity wall thread, 12-Loading tube connector outer wall thread, 13-Locking cavity, 14-Small cavity wall, 15-Protrusion, 16-Particle loading tube, 17-Exhaust hole, 18-Iodine-125 particles, 19-Particle fixing line, 20-Particle introducer, 21-Groove, 22-Loading tube seat, 23-Plug, 24-Particle push guide wire, 25-Tee connector, 26-Nut. Detailed Implementation

[0025] The specific embodiments of this utility model are described in detail below with reference to the accompanying drawings:

[0026] As attached Figure 1-8 As shown, a drainage tube assembly comprising a hollow tubular drainage tube body 1 closed at one end and a hollow drainage tube seat 2 installed at the other end of the drainage tube body and connected to the drainage tube body, is included. Multiple drainage holes 3 are provided on the wall of the closed end of the drainage tube body for drainage. A marking ring 4 is also provided on the drainage tube body, which is visible under X-ray, allowing doctors to observe the insertion position of the drainage tube in X-ray equipment. Additionally, a traction wire (not shown in the attached figure) is provided inside the drainage tube body. After the drainage tube body is inserted into the patient's body, medical personnel can pull the traction wire to make the front end of the drainage tube body form an "e" or "o" shape as shown in the attached figure, preventing the drainage tube body from dislodging or shifting from the narrowed part of the patient's bile duct. Based on this, the drainage tube assembly of this utility model is also equipped with a three-way connector 25 that can be connected to the drainage tube seat, and a particle loading tube 16 that can be inserted into the three-way connector and the drainage tube assembly.

[0027] 1. The tee connector is a hollow "T"-shaped structure with three connectors, including a drainage tube seat connector 5 that can be connected (communicated) to a drainage tube seat, a drainage bag connector 6 that can be connected (communicated) to a drainage bag, and a loading tube connector 7 into which a particle loading tube can be inserted. The three connectors are interconnected, and the drainage tube seat connector and the loading tube connector are in a straight line connection. The loading tube connector is also equipped with a locking device: this locking device mainly consists of a locking cap 8 and an elastic locking block 9. One end of the locking cap is a hollow single-cavity structure, and the other end is a double-cavity structure with a large cavity surrounding a small cavity. The inner wall of the large cavity wall 10 is threaded (as shown by the large cavity wall thread 11 in the attached diagram; the "large cavity" refers to the middle hollow cavity formed by the large cavity wall thread 11). This thread... The loading tube connector has a threaded outer wall (as shown by thread 12 on the outer wall of the loading tube connector in the attached figure) to achieve a threaded connection between the large cavity wall and the loading tube connector. The loading tube connector has a locking cavity 13 at its end. The locking cap small cavity wall 14 (the "small cavity" is the hollow cavity formed by the small cavity wall 14) can be inserted into the locking cavity. The elastic locking block is a hollow structure (the elastic locking block is an elastic rubber block) and is installed in the locking cavity at the outer end of the small cavity wall. At the same time, the single cavity at one end of the locking cap and the small cavity at the other end, the hollow cavity of the elastic locking block, the hollow cavity of the loading tube connector, and the hollow cavity of the drainage tube seat connector are all linearly connected to facilitate the insertion of the particle loading tube during use. In practical implementation, the size of the hollow cavity of the hollow elastic locking block is slightly larger than the size (diameter) of the particle loading tube. During operation, after the particle loading tube is inserted from the locking cap and passes through the hollow cavity of the elastic locking block, the locking cap is rotated clockwise. Under the action of the two threads 11 and 12 shown in the attached diagram, the small cavity wall 14 of the locking cap moves to the right. When the right end of the small cavity wall of the locking cap abuts against the left end of the elastic locking block, the locking cap continues to be rotated clockwise, and the locking cap continues to move to the right. The right end of the small cavity wall begins to squeeze the elastic locking block. Under the squeezing force of the right end of the small cavity wall, the elastic locking block begins to deform and bulges out into the central hollow cavity (as shown in the attached diagram). Figure 8 As shown, when the elastic locking block protrudes into the hollow cavity to a certain extent, the protrusion 15 will begin to squeeze and clamp the particle loading tube, thereby effectively preventing the particle loading tube from moving. When it is necessary to fix the iodine-125 particles through the particle fixing line, the locking cap continues to rotate clockwise, the elastic locking block continues to protrude into the hollow cavity and squeeze the particle loading tube to deform (flatten) inward, eventually causing the particle loading tube to deform and flatten and clamp the middle particle fixing line, so that the particle fixing line can no longer move, thereby causing the particle fixing line to press against the iodine-125 particles, thus preventing the iodine-125 particles from moving, and completing the positioning of the iodine-125 particles.

[0028] 2. The particle loading tube 16 is a hollow, elongated tubular structure closed at one end. An exhaust port 17 is located at the closed end, and a hollow loading tube seat 22 is installed at the other end. This loading tube seat can be connected to one end of a single-cavity locking cap structure. The particle loading tube is also equipped with a particle pusher wire 24 for pushing iodine-125 particles 18 into the particle loading tube body, and a particle fixing wire 19 for fixing the position of the iodine-125 particles in the particle loading tube body. The particle loading tube body is a soft tube made of PP material, and the diameter of the hollow cavity in the particle loading tube body is slightly larger than the diameter of the iodine-125 particles placed inside. The particle fixing wire is a thin, long PVC wire with a certain degree of rigidity. The particle pusher wire is a stainless steel wire that can push the particles into the closed end of the particle loading tube. Simultaneously, the particle loading tube is also equipped with a particle introducer 20 for easily placing iodine-125 particles into the particle loading tube body, as shown in the attached diagram. Figure 6 , 7 As shown, one end of the particle introducer is a conical hollow structure, and the other end is an open groove structure. The groove 21 of the open groove is connected in a straight line to the hollow cavity at the conical end to form a through hole. Since the iodine-125 particles are small (particle diameter is about φ0.8mm and length is about 4.5mm), and the hollow cavity of the particle loading tube is also small, only slightly larger than the particle diameter, it is difficult to directly put the iodine-125 particles into the particle loading tube. The function of the particle introducer is to facilitate medical staff to place the iodine-125 particles into the particle loading tube. When it is necessary to place iodine-125 particles into a particle loading tube for implantation into a patient, the conical end of the particle delivery device is first inserted into one end of the loading tube holder (the other end of the loading tube holder is connected to the particle loading tube body). Medical staff then use tweezers to hold the iodine-125 particles and place them into the groove of the particle delivery device. Then, the particle pusher wire pushes the iodine-125 particles forward until they are pushed into the particle loading tube body. After the iodine-125 particles are pushed to the required position at the closed end of the particle loading tube, the particle pusher wire is pulled out and the particle fixing wire is inserted. When the front end of the particle fixing wire presses against the iodine-125 particles, the locking cap is rotated clockwise. The small cavity wall of the locking cap squeezes the elastic locking block. The elastic locking block bulges into the hollow cavity in the middle and squeezes the particle loading tube. The soft tube of the particle loading tube is squeezed and deformed, and then clamps the middle particle fixing wire, thereby fixing the particle loading tube and the particle fixing wire, and thus fixing and positioning the iodine-125 particles in the particle loading tube.

[0029] 3. In specific implementation, the tee connector may be a four-way connector with four connectors, or a structure with more than four connectors.

[0030] 4. In this utility model, the drainage tube seat connector is connected to the drainage tube seat via threads: as shown in the attached figure. Figure 3 , 4As shown, a movable nut 26 is provided on the drainage tube seat connector, and a thread matching the nut is opened on the outer wall of the drainage tube seat. At the same time, the drainage tube seat connector can be set as a conical body, and the drainage tube seat can be set as a matching conical hole. After inserting the conical body of the drainage tube seat into the conical hole of the drainage tube seat, the two are threadedly connected and tightened through the nut on the drainage tube seat connector and the thread on the drainage tube seat. The connection between the drainage tube seat connector and the drainage tube seat can also be an insertion interference connection: the drainage tube seat connector is directly inserted into the drainage tube seat and interference-fitted to ensure that it will not easily fall off. Of the two connection methods, the threaded connection is preferred.

[0031] 5. A plug 22 is also installed on the tee connector. This plug is connected to the tee connector by a wire or other flexible material (such as a plastic sheet). This plug matches one end (left end) of the single-cavity structure of the loading pipe seat and locking cap. The function of this plug is to block the corresponding opening after the relevant operation is completed, preventing foreign objects from entering. This plug can be inserted into the corresponding connector or wrapped around the corresponding connector, as long as it can effectively block the connector interface (see appendix). Figure 3 , 4 (The end cap was not shown in the drawing).

[0032] 6. For the components shown in the attached figures, such as the drainage tube seat 2, locking cap 8, loading tube seat 22, plug 23, and nut 26, their external shapes often have ladder structures of varying sizes. The external shapes of these components are not limited by these ladder structures.

[0033] 3. Specific usage method of this utility model:

[0034] 1) Insert the drainage tube body of the drainage tube assembly into the human body drainage position according to the standard technique, pull the traction line, confirm that the front end of the drainage tube body has an "e" or "o" shaped structure and is located at the upper end of the patient's bile duct stenosis (obstruction site), to prevent the drainage tube body from falling off or shifting.

[0035] 2) Locate the patient's body under X-ray equipment and determine the location of the particle radiation. Select a particle loading tube of the appropriate length based on this location, and then place the iodine-125 particles into the particle loading tube.

[0036] 3) Insert the particle loading tube containing iodine-125 particles into the left end hole of the lock cap and push it forward until the iodine-125 particles reach the patient's treatment site. Then, turn the locking device clockwise until the elastic locking block clamps the particle loading tube and particle fixing wire. Cut off any excess particle fixing wire protruding from the outside of the loading tube seat and then plug the end cap.

[0037] 4) When drainage is needed, simply connect a drainage bag to the drainage tube connector to perform drainage;

[0038] 5) When it is necessary to adjust the treatment position of iodine-125 particles in the patient's body, the location of the obstruction to be treated needs to be observed in advance under X-ray equipment. An appropriately sized particle loading tube is then inserted into the iodine-125 particles before being inserted into the drainage tube assembly. Using this invention for iodine-125 particle position adjustment eliminates the need to replace the entire drainage tube as in existing technologies, significantly reducing patient suffering and treatment costs.

[0039] 6) When it is necessary to remove the iodine-125 particles, simply open the plug and then rotate the locking cap counterclockwise. The protrusion of the elastic locking block will slowly retract under its own elastic force. After the elastic locking block no longer clamps the particle loading tube and particle fixing wire, the particle loading tube can be pulled out. This invention allows for the removal of iodine-125 particles at any time, effectively avoiding the drawback of existing technologies where iodine-125 particles remain in the patient's body for a long time after treatment, thus causing long-term health problems.

[0040] 7) When it is necessary to replace the iodine-125 particles, simply remove the particle loading tube, replace the iodine-125 particles, and then insert it into the drainage tube assembly. There is no need to replace the entire drainage tube.

[0041] 8) When the drainage tube becomes blocked, the plug can be opened and the particle loading tube can be repeatedly pulled out and inserted. The drainage tube can be cleared by pulling the particle loading tube, without the need to replace the entire drainage tube.

Claims

1. A drainage tube assembly for accommodating and adjusting the position of particles, comprising a hollow tubular drainage tube body closed at one end, and a hollow drainage tube seat installed at the other end of the drainage tube body and communicating with the drainage tube body, characterized in that: The drainage tube assembly is also equipped with a tee connector that can be connected to the drainage tube seat, and a particle loading tube that can be inserted into the tee connector and the drainage tube assembly. The tee connector is a hollow "T"-shaped structure with three connectors that are interconnected. Two connectors are drainage tube seat connectors and drainage bag connectors that can be connected to the drainage tube seat and drainage bag, respectively. The third connector is a loading tube connector into which the particle loading tube can be inserted. The drainage tube seat connector and the loading tube connector are in a straight line connection. The loading tube connector is also equipped with a locking device, which mainly consists of a locking cap and an elastic locking block. One end of the locking cap is a hollow single-cavity structure, and the other end is a double-cavity structure with a large cavity inside a small cavity. The inner wall of the large cavity is threaded, and this thread matches the thread on the outer wall of the loading tube connector to achieve the locking of the large cavity wall with the loading tube connector. The loading tube connector has a threaded connection, and a locking cavity is opened at the end of the loading tube connector. The wall of the small cavity of the locking cap can be inserted into the locking cavity. The elastic locking block is a hollow structure and is installed in the locking cavity with the small cavity wall facing outward. The single cavity at one end of the locking cap and the small cavity at the other end, the hollow cavity of the elastic locking block, the hollow cavity of the loading tube connector, and the hollow cavity of the drainage tube seat connector are all connected in a straight line. The particle loading tube is a hollow long tube structure with one end closed. The closed end has an exhaust hole, and the other end is equipped with a hollow loading tube seat. The loading tube seat can be connected to one end of the single cavity structure of the locking cap. The particle loading tube is also equipped with a particle push guide wire for pushing iodine-125 particles into the particle loading tube body, and a particle fixing wire for fixing the position of iodine-125 particles in the particle loading tube body.

2. The device for emitting particles and adjusting the particle position according to claim 1, characterized in that: The particle loading tube is also equipped with a particle introducer that facilitates the placement of iodine-125 particles into the tube body. One end of the particle introducer is a conical hollow structure, and the other end is an open groove structure.

3. The device for emitting particles and adjusting the particle position according to claim 1, characterized in that: The aforementioned tee connector may be a four-way connector with four connectors, or a structure with more than four connectors.

4. The device for emitting particles and the adjustable particle position drainage tube assembly according to claim 1, characterized in that: The drainage tube seat connector is connected to the drainage tube seat via threads. A movable nut is provided on the drainage tube seat connector, and a thread matching the nut is formed on the outer wall of the drainage tube seat. The connection between the drainage tube seat connector and the drainage tube seat is either an insertion type interference fit.

5. A drainage tube assembly for adjusting particle position according to claim 1, characterized in that... The elastic locking block is a rubber block with elasticity.

6. A drainage tube assembly for adjusting particle position according to claim 1, characterized in that: The tee connector is also equipped with a plug that matches one end of the loading pipe seat and the single-cavity structure of the locking cap.

7. A drainage tube assembly for adjusting particle position according to claim 1, characterized in that: The diameter of the hollow cavity of the loading tube is larger than the diameter of the iodine-125 particles placed inside.

Images