Urethral stent with medicine guide structure

Abstract

The utility model belongs to the technical field of urethral stents, in particular to a urethral stent with a medicine guide structure, which comprises a urethral stent main body and a shunting groove, the shunting groove is arranged in the urethral stent main body, an annular groove is arranged on one side of the urethral stent main body close to the shunting groove, and the shunting groove is communicated with the annular groove. According to the urethral stent with the medicine guiding structure, after the urethral stent is inserted into the urethra, the urethra is kept unobstructed, when the urethral stent is inserted into the urethra and medicine needs to be applied, the butt joint pipe is rotated, the first thin film is punctured by the puncture needle, the liquid medicine bag is extruded to deform, and liquid medicine in the liquid medicine bag is guided to the urethra wall through the diversion groove; when the liquid medicine in the liquid medicine bag is used up, an injection needle tube and the like are used for puncturing the second film to inject the liquid medicine, the injected liquid medicine is in contact with the urethra wall through the diversion groove, and the urethra support is inserted into the urethra to facilitate local medicine application.

Description

Technical Field

[0001] This utility model relates to the field of urethral stent technology, specifically a urethral stent with a drug-guided structure. Background Technology

[0002] A urethral stent is a medical device used in the urethra to treat problems such as urethral obstruction or urethral stricture. Urethral stents are usually made of biocompatible materials and are designed to maintain the patency of the urethra and ensure normal urine flow. When urine is difficult to drain due to urethral stricture, urethral stones, tumors, or other reasons, using a urethral stent can help relieve the obstruction and restore urine flow. After some urological surgeries, the urethra may be swollen or otherwise affected, and urethral stents can also prevent postoperative urethral occlusion, keep the urethra open, and promote wound healing.

[0003] The main function of a urethral stent is to maintain the patency of the urethra and ensure normal urine drainage. After the urethral stent is inserted into the urethra, the outer side of the stent usually fits against the urethral wall to maintain the patency of the urethra. At this time, the outer wall of the stent will occupy part of the space in the urethra, making it more difficult for the drug to be evenly distributed to the required site through the inner wall of the urethra. Therefore, we propose a urethral stent with a drug delivery structure. Utility Model Content

[0004] The purpose of this invention is to provide a urethral stent with a drug-guiding structure to solve the problem mentioned in the background art that the outer side of the urethral stent usually adheres to the urethral wall, making it more difficult for the drug to be evenly distributed to the desired location through the inner wall of the urethra.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a urethral stent with a drug-guiding structure, comprising a urethral stent body and a diversion groove. The diversion groove is provided inside the urethral stent body, and an annular groove is provided on the side of the urethral stent body near the diversion groove. The diversion groove communicates with the annular groove. A guiding hose is provided at the inlet of the annular groove. One end of the guiding hose is connected to the urethral stent body, and the other end of the guiding hose is fixed to the through groove of a connecting plate. The inner side of the connecting plate is fixed to one end of a spiral tube.

[0006] Preferably, the end of the spiral tube furthest from the connecting plate is connected to the connecting tube, and a connecting cover is fitted onto the end of the connecting tube closest to the connecting plate.

[0007] Preferably, one end of the connecting cover is connected to one side of the connecting plate, and the other end of the connecting cover is fixed to the connecting pipe.

[0008] Preferably, an anti-slip strip is fixed to one side of the connecting tube, and a spike is fixed to the side of the spiral tube away from the connecting plate.

[0009] Preferably, a thin film is adhered to the side of the connecting tube near the needle, and the connecting tube near the thin film is fixed to the drug sac.

[0010] Preferably, a second film is bonded to the through groove at the bottom of the medicine sac, and the second film is made of a deformable rubber film material.

[0011] Preferably, the spiral tube and the connecting tube are threaded together, and the connecting cover is made of polyester film material.

[0012] Preferably, the anti-slip strip is made of deformable rubber, the first film is made of aluminum foil, and the liquid capsule is made of thick nylon film.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: the urethral stent with a drug-guiding structure keeps the urethra open after insertion. When medication is needed after insertion, the connecting tube is rotated to allow the needle to pierce the first membrane, compressing the drug-filled sac and causing it to deform. This allows the medication inside the sac to be guided to the urethral wall through the diversion channel, so that the medication can be evenly distributed to the required area on the inner wall of the urethra. When the medication inside the sac is used up, the medication can be injected by piercing the second membrane with an injection needle, allowing the injected medication to contact the urethral wall through the diversion channel. This makes it easier to apply medication locally after the urethral stent is inserted into the urethra. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the urethral stent body and the drug-filled bladder of this utility model;

[0015] Figure 2 This is a schematic diagram of the main body of the urethral stent, the diversion channel and its connection structure of the present invention;

[0016] Figure 3 This is a schematic diagram of the connecting plate, the spiral tube, and their connecting structure of this utility model;

[0017] Figure 4 This utility model Figure 3 A magnified schematic diagram of the structure at point A in the middle.

[0018] In the diagram: 1. Main body of urethral stent; 2. Diversion channel; 201. Annular groove; 202. Drainage hose; 203. Connecting plate; 204. Spiral tube; 205. Connecting tube; 206. Connecting cover; 207. Anti-slip strip; 208. Needle; 209. Membrane 1; 210. Medication capsule; 211. Membrane 2. 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] Please see Figures 1-4 This utility model provides a technical solution: a urethral stent with a drug-guiding structure, including a urethral stent body 1 and a diversion groove 2. The diversion groove 2 is provided inside the urethral stent body 1, and an annular groove 201 is provided on the side of the urethral stent body 1 near the diversion groove 2. The diversion groove 2 communicates with the annular groove 201. A guide tube 202 is provided at the inlet of the annular groove 201. One end of the guide tube 202 is connected to the urethral stent body 1, and the other end of the guide tube 202 is fixed to the through groove of the connecting plate 203. The inner side of the connecting plate 203 is fixed to one end of the screw tube 204. The end of the screw tube 204 away from the connecting plate 203 is connected to the connecting pipe 205. A connecting cover 206 is sleeved on the end of the connecting pipe 205 near the connecting plate 203. One end of the connecting cover 206 is connected to one side of the connecting plate 203, and the other end of the connecting cover 206 is fixed to the connecting tube 205. An anti-slip strip 207 is fixed to one side of the connecting tube 205. A needle 208 is fixed to the side of the screw tube 204 away from the connecting plate 203. A film 209 is glued to the side of the connecting tube 205 near the needle 208. The connecting tube 205 is fixed to the medicine bag 210 near the film 209. A film 211 is glued to the through groove at the bottom of the medicine bag 210. The film 211 is made of deformable rubber film material. The screw tube 204 and the connecting tube 205 are connected by threads. The connecting cover 206 is made of polyester film material. The anti-slip strip 207 is made of deformable rubber strip material. The film 209 is made of aluminum foil material. The medicine bag 210 is made of nylon thick film material.

[0021] In specific implementation, according to Figures 1-4After the urethral stent is inserted into the urethra, the outer side of the stent usually adheres to the urethral wall to maintain urethral patency. At this time, the medication capsule 210 contains medication to reduce inflammation or infection. A fixed film 209, made of aluminum foil, provides excellent sealing, barrier, and moisture resistance, preventing medication from flowing into the annular groove 201. When medication needs to be administered after inserting the urethral stent, the connecting tube 205 is rotated. A deformable rubber strip 207 facilitates rotation of the connecting tube 205 by medical personnel. The screw tube 204 is threadedly connected to the connecting tube 205, allowing the connecting tube to... 205 can move upward along the solenoid 204. The connecting cover 206, made of polyester film, has a certain degree of flexibility. At this time, the connecting tube 205 can move upward to compress the connecting cover 206, causing it to bend and deform. This allows the connecting tube 205 to bring the film 209 closer to the needle 208. Furthermore, the connecting cover 206, made of polyester film, has excellent mechanical strength, tear resistance, and puncture resistance, making it difficult to puncture. Therefore, the connecting cover 206 can protect the connection between the solenoid 204 and the connecting tube 205, preventing external impurities from contaminating the inner surfaces of the solenoid 204 and the connecting tube 205. At this time, the membrane 209 is close to the needle 208. Because the membrane 209 is made of aluminum foil, the needle 208 can easily pierce it. Then, the connecting tube 205 is rotated in the opposite direction, causing the membrane 209 to move away from the needle 208. Meanwhile, the medication sac 210, made of thick nylon film, has a certain degree of deformation capability, allowing medical personnel to squeeze it. This causes the medication inside the sac 210 to flow through the guide tube 202, the spiral tube 204, and the connecting tube 205 into the annular groove 201. The annular groove 201 then directs the medication into the diversion groove 2. The diversion channel 2 can divert the medication to the urethral wall, allowing the medication to be evenly distributed to the required areas on the urethral wall. When the medication in the medication sac 210 is used up, the second membrane 211, made of deformable rubber film material, has good elasticity, can seal the bottle opening, and allows puncture, so that medical staff can use injection needles to puncture the second membrane 211 to inject the medication. The injected medication comes into contact with the urethral wall through the diversion channel 2. The second membrane 211, made of deformable rubber film material, can rebound after the needle is removed, restoring the sealing function, making it easy to administer local medication after the urethral stent is inserted into the urethra.

[0022] In summary, after the urethral stent is inserted into the urethra, the outer side of the urethral stent usually adheres to the urethral wall to maintain urethral patency. At this time, the medication sac 210 contains medication to reduce inflammation or infection. When medication is needed after the urethral stent is inserted into the urethra, the connecting tube 205 is rotated, causing the needle 208 to pierce the membrane 209, squeezing the medication sac 210 to deform it. This causes the medication inside the medication sac 210 to be diverted through the diversion groove 2 to the urethral wall, so that the medication can be evenly distributed to the required area on the inner wall of the urethra. When the medication inside the medication sac 210 is used up, medical personnel can use an injection needle to pierce the membrane 211 to inject the medication, allowing the injected medication to contact the urethral wall through the diversion groove 2. This facilitates local medication after the urethral stent is inserted into the urethra. The contents not described in detail in this description are prior art known to those skilled in the art.

[0023] Although the present invention 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 invention should be included within the protection scope of the present invention.

Claims

1. A urethral stent with a drug delivery structure, comprising a urethral stent body (1) and a diversion channel (2), characterized in that: The urethral stent body (1) has a diversion groove (2) inside, and an annular groove (201) is provided on the side of the urethral stent body (1) near the diversion groove (2). The diversion groove (2) is connected to the annular groove (201). A guide hose (202) is provided at the inlet of the annular groove (201). One end of the guide hose (202) is connected to the urethral stent body (1), and the other end of the guide hose (202) is fixed to the through groove of the connecting plate (203). The inner side of the connecting plate (203) is fixed to one end of the spiral tube (204).

2. The urethral stent with a drug-conducting structure according to claim 1, characterized in that: The end of the spiral tube (204) away from the connecting plate (203) is connected to the connecting tube (205), and the end of the connecting tube (205) near the connecting plate (203) is fitted with a connecting cover (206).

3. A urethral stent with a drug-conducting structure according to claim 2, characterized in that: One end of the connecting cover (206) is connected to one side of the connecting plate (203), and the other end of the connecting cover (206) is fixed to the connecting pipe (205).

4. A urethral stent with a drug-conducting structure according to claim 3, characterized in that: An anti-slip strip (207) is fixed on one side of the connecting tube (205), and a needle (208) is fixed on the side of the screw tube (204) away from the connecting plate (203).

5. A urethral stent with a drug-conducting structure according to claim 4, characterized in that: The connecting tube (205) is bonded with a film (209) on the side near the needle (208), and the connecting tube (205) is fixed to the drug sac (210) near the film (209).

6. A urethral stent with a drug-conducting structure according to claim 5, characterized in that: The bottom groove of the liquid sac (210) is bonded with a second film (211), which is made of deformable rubber film material.

7. A urethral stent with a drug-conducting structure according to claim 6, characterized in that: The spiral tube (204) and the connecting tube (205) are threaded together, and the connecting cover (206) is made of polyester film.

8. A urethral stent with a drug-conducting structure according to claim 7, characterized in that: The anti-slip strip (207) is made of deformable rubber strip material, the first film (209) is made of aluminum foil material, and the liquid capsule (210) is made of nylon thick film material.

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