Medical catheter
By designing a medical catheter that combines an external and internal catheter, and utilizing the balloon section and fixation components, the problem of urine leakage during patient activity was solved, achieving accurate urine drainage and comfortable use.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI BAXING MEDICAL TECH CO LTD
- Filing Date
- 2025-01-21
- Publication Date
- 2026-06-09
AI Technical Summary
The balloon in the bladder of the existing urinary catheter is prone to movement when the patient moves, causing urine to flow out along the catheter and not accurately into the urine bag.
A medical catheter has been designed, comprising an outer catheter and an inner catheter. The outer catheter has a catheter port, a balloon section, and an airflow channel. The balloon section expands and clamps the catheter into the bladder. Combined with fixing components such as a clamping ring and a lubricating ring, the outer catheter is secured to the urethral opening to prevent movement.
It effectively prevents urine leakage, ensures that urine flows accurately into the urine bag, reduces friction damage, and improves user comfort.
Smart Images
Figure CN224331351U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of medical devices, and in particular to a medical catheter. Background Technology
[0002] A urinary catheter is a device that is inserted through the urethra into the bladder to drain urine. Therefore, urinary catheters are widely used in the medical field. After surgery, when patients have difficulty urinating, they need to undergo urinary catheterization, which mainly guides the urine in the bladder to the outside of the body to prevent the patient from holding urine and causing bladder swelling.
[0003] A urinary catheter can be inserted into the bladder through the urethra to drain urine. Clinically commonly used indwelling urinary catheters are made of latex or silicone. There is an air balloon on the catheter body. When the catheter is inserted into the bladder, the air balloon is inflated by liquid or gas to achieve indwelling of the bladder and it is not easy to fall out. The other end of the catheter is connected to a urine bag to collect urine.
[0004] When patients undergo urinary catheterization, the bladder balloon can easily move during activity, causing urine to flow out along the catheter instead of accurately into the urine bag. Utility Model Content
[0005] To prevent urine from flowing along the catheter to the outside of the urine bag, this application provides a medical catheter.
[0006] This application provides a medical urinary catheter, which adopts the following technical solution:
[0007] A medical catheter includes a catheter body component and a catheter bag connected to the catheter body component. The catheter body component includes an outer catheter and an inner catheter disposed inside the outer catheter. One end of the inner catheter is fixed to the interior of the outer catheter. A catheter port is provided on the outer catheter near the end of the inner catheter, and the catheter port communicates with the interior of the inner catheter. The catheter bag is connected to the ends of the outer catheter and the inner catheter away from the catheter port. An inflatable and deformable balloon portion is provided on the outer catheter near the catheter port, and an airflow channel is provided between the outer catheter and the inner catheter, and the airflow channel communicates with the balloon portion. A fixing component is provided on the outer catheter for controlling the movement of the outer catheter and the inner catheter into the body.
[0008] By adopting the above technical solution, when performing urinary catheterization on a patient, the end of the external catheter with the catheterization port is inserted into the patient's urethra and gradually into the patient's bladder. After the catheterization port enters the patient's bladder, the balloon is controlled to expand and deform, so that the balloon is locked inside the bladder, allowing the urine in the patient's bladder to flow through the catheterization port into the internal catheter and then into the catheterization bag. During the urinary catheterization process, the fixed components can firmly fix the external catheter at the patient's urethra, preventing the external catheter from moving into the patient's bladder during the patient's movement and causing urinary leakage.
[0009] Preferably, the fixing component includes a clamping ring that is slidably fitted onto the external catheter, the clamping ring being slidably contacting the outside of the urethral opening.
[0010] By adopting the above technical solution, when the external catheter is inserted into the patient's bladder and the balloon inflates, the doctor slides the clamping ring so that the clamping ring can be pressed against the urethral opening, thereby forming a blockage at the patient's urethral opening and preventing the balloon from moving the external catheter into the bladder during the patient's movement.
[0011] Preferably, the clamping ring has an internal hollow structure, which can be filled with gas or liquid, and the clamping ring is made of a flexible material.
[0012] By adopting the above technical solution, when the clamping ring is pressed against the patient's urethral opening, the flexible material of the clamping ring will not scratch the patient, and the gas or liquid filled inside it can better contact the patient's urethral opening, making the clamping ring softer and easier for the patient to accept.
[0013] Preferably, the fixing assembly further includes a fixing ring slidably sleeved on the external catheter and a fixing member disposed on the fixing ring and fixing the fixing ring, wherein the fixing ring is located on the side of the clamping ring away from the catheter port, and the fixing ring is connected to the clamping ring.
[0014] By adopting the above technical solution, when the abutment ring needs to be moved to the patient's urethral opening, the movement of the fixed ring is indirectly controlled to move the abutment ring to the patient's urethral opening, avoiding direct hand control of the movement of the abutment ring and causing damage to the abutment ring. After the fixed ring has moved, it is fixed by a fixing component, thereby fixing the abutment ring to the patient's urethral opening.
[0015] Preferably, the fixing member includes a plurality of fixing plates disposed on the fixing ring and away from the end of the abutting ring. The plurality of fixing plates are evenly distributed circumferentially around the axis of the fixing ring, and the end of the fixing plate away from the fixing ring can be inclined to extend toward the surface of the outer conduit. The fixing plate is elastic, and the external threads of the plurality of fixing plates are connected to a rotating ring. By controlling the rotation of the rotating ring, the end of the fixing plate can be pressed against the outer conduit.
[0016] By adopting the above technical solution, when fixing the fixing ring to the outer conduit, the rotating ring is rotated so that the rotating ring moves to the farthest end of the fixing piece, so that the farthest end of the fixing piece can move toward the surface of the outer conduit and abut against the surface of the outer conduit, thereby allowing the ends of multiple fixing pieces to abut against the outer conduit, thus achieving the fixing of the fixing ring.
[0017] Preferably, a lubricating ring is provided between the clamping ring and the fixing ring, the lubricating ring is slidably fitted on the outer guide tube, the lubricating ring is connected to the clamping ring and the fixing ring respectively, and a lubricating element for lubricating the outer guide tube is provided on the inner circumferential surface of the lubricating ring.
[0018] By adopting the above technical solution, when the tip of the external catheter is inserted into the patient's bladder, the lubricating element can lubricate the wall of the external catheter through the sliding lubrication ring, thereby allowing the external catheter to be inserted into the patient's urethra more smoothly and extend into the patient's bladder.
[0019] Preferably, the lubrication ring is hollow inside and has an annular opening on one side facing inward. The lubricating component includes a sponge ring disposed inside the lubrication ring, and the sponge ring is capable of absorbing lubricant.
[0020] By adopting the above technical solution, when lubricating the external conduit, the sponge ring can be fully saturated with lubricant, allowing for the storage of more lubricant, and the lubricant can be evenly applied to the wall of the external conduit through the sponge ring.
[0021] Preferably, the outer wall of the lubrication ring is provided with a filling port, and a fixing plug is threadedly connected to the filling port.
[0022] By adopting the above technical solution, when the sponge ring is no longer able to lubricate, the doctor can open the fixation plug and fill the lubrication ring with lubricant through the injection port. The lubricant is gradually absorbed by the sponge ring after it is filled. Before each use of the external catheter, the doctor can slide the lubrication ring to make the lubricant on the sponge ring evenly spread onto the external catheter.
[0023] Preferably, a rigid drainage cap is provided inside the external catheter and at the end near the urinary inlet, and the drainage cap has a corresponding urinary inlet.
[0024] By adopting the above technical solution, when the external catheter needs to be inserted into the patient's bladder, since both the external and internal catheters are made of flexible materials, and the diameter of the urethral opening is relatively small during the insertion process, the external and internal catheters will deform and cannot move forward. By setting a rigid drainage cap, it is convenient for doctors to clear the patient's urethra and allow the external catheter to be smoothly inserted into the bladder.
[0025] Preferably, an inflation tube is connected to the outer conduit, and the inflation tube is in communication with the airflow channel.
[0026] By adopting the above technical solution, when controlling the expansion and deformation of the airbag, it is convenient to fill the air or liquid into the airflow channel through the inflation tube, so that the airbag can expand and deform quickly.
[0027] In summary, this application includes at least one of the following beneficial technical effects:
[0028] 1. When controlling the insertion of the external catheter into the patient's bladder, the sliding lubrication ring and sponge ring can evenly apply the lubricant on the sponge ring to the external catheter, reducing the friction on the surface of the external catheter, thereby making it easier to operate the external catheter to be inserted into the patient's bladder through the urethral opening;
[0029] 2. When the tip of the external catheter is inserted into the patient's bladder and the balloon expands and deforms, the doctor slides the control ring to press the clamping ring against the patient's urethral opening. By rotating the ring, the ends of the multiple fixing plates can be squeezed onto the external catheter, thereby connecting and fixing the fixing ring and the external catheter to prevent the fixing ring from moving on the external catheter during use. Attached Figure Description
[0030] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application.
[0031] Figure 2 This is a cross-sectional view of the internal catheter as shown in the embodiment of this application.
[0032] Figure 3 yes Figure 1 Enlarged diagram of point A in the middle.
[0033] Figure 4 yes Figure 2 Enlarged diagram of point B in the middle.
[0034] Explanation of reference numerals in the attached diagram: 1. Main component of the catheter; 11. External catheter; 12. Internal catheter; 13. Catheter port; 14. Airflow channel; 15. Balloon section; 16. Inflation tube; 17. Valve; 18. Unblocking cap; 2. Fixing component; 21. Anchoring ring; 22. Lubricating ring; 23. Sponge ring; 24. Fixing plug; 25. Fixing ring; 26. Fixing plate; 27. Rotating ring. Detailed Implementation
[0035] The preferred embodiments described below are merely examples, and other obvious variations will be apparent to those skilled in the art. The basic principles of this invention as defined in the following description can be applied to other implementations, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of this invention.
[0036] Those skilled in the art should understand that in the disclosure of this utility model, the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as a limitation of this utility model.
[0037] It is understood that the term "a" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple, and the term "a" should not be understood as a limitation on the number.
[0038] The following is in conjunction with the appendix Figures 1-4 This application will be described in further detail.
[0039] This application discloses a medical catheter.
[0040] Reference Figure 1 A medical catheter includes a catheter body component 1 and a catheter bag connected to the catheter body component 1. In use, the catheter body component 1 is installed on the patient who needs to wear it, and urine in the patient's bladder is drained into the catheter bag through the catheter body component 1.
[0041] Reference Figure 1 , Figure 2 and Figure 3The catheter main body component 1 includes an outer catheter 11 and an inner catheter 12. The inner catheter 12 is disposed inside the outer catheter 11. Both the outer catheter 11 and the inner catheter 12 are made of latex or silicone. A urinary port 13 communicating with the interior of the outer catheter 11 is provided at one end. A urinary catheter bag is connected to the end of the outer catheter 11 away from the urinary port 13. The end of the inner catheter 12, located inside the outer catheter 11, is fixed to the position near the urinary port 13, so that the outer catheter 11 and the inner catheter 12 are connected as a whole. The end of the inner catheter 12 near the urinary port 13 is set as an opening, so that the urinary port 13 communicates with the interior of the inner catheter 12. The end of the inner catheter 12 away from the urinary port 13 is fixed to the end of the outer catheter 11 away from the urethral opening. The outer catheter 11 is connected to the urinary catheter bag, and the diameter of the outer catheter 11 is larger than that of the inner catheter 12, thereby forming a closed airflow channel 14 between the outer catheter 11 and the inner catheter 12. The airflow channel 14 can be filled with gas or liquid. An inflatable balloon part 15 is provided on the outer catheter 11 near the urinary port 13. In use, the operator inserts one end of the outer catheter 11 with the urinary port 13 through the urethra into the patient's bladder. Then, by delivering gas or liquid into the airflow channel 14, the balloon part 15 inflates and is locked into the bladder, preventing the outer catheter 11 and the inner catheter 12 from falling out of the bladder. Urine in the patient's bladder can flow into the inner catheter 12 through the urinary port 13 and finally into the urinary catheter bag.
[0042] Reference Figure 1 , Figure 2 and Figure 3 An inflation tube 16 is connected to the end of the external catheter 11 near the end of the catheter bag. The inflation tube 16 is connected to the airflow channel 14. A valve 17 is provided at the end of the inflation tube 16 away from the external catheter 11. In use, the end of the inflation tube 16 is connected to the inflation source and the valve 17 is opened to inflate the inflation tube 16 with gas or liquid. The gas or liquid fills the airflow channel 14 and gradually flows to the balloon 15. With continued inflation, the balloon 15 expands. The same valve 17 is provided at the ends of the external catheter 11 and the internal catheter 12 away from the catheter port 13. After the balloon 15 is locked into the bladder, the valve 17 on the external catheter 11 is opened to allow the urine in the bladder to flow automatically into the catheter bag.
[0043] Reference Figure 1 , Figure 2 and Figure 3A drainage cap 18 is fixed inside the external catheter 11 and near the end of the catheter port 13. The drainage cap 18 has the same catheter port 13. When the external catheter 11 needs to be inserted into the patient's bladder, since both the external catheter 11 and the internal catheter 12 are made of flexible material, the diameter of the urethral opening is relatively small during the insertion process. This will cause the external catheter 11 and the internal catheter 12 to deform and be unable to move forward. The rigid drainage cap 18 makes it easier for the doctor to clear the patient's urethra and allow the external catheter 11 to be smoothly inserted into the bladder.
[0044] Reference Figure 1 , Figure 2 and Figure 3 A fixing component 2 is provided on the external catheter 11 to prevent the external catheter 11 and the internal catheter 12 from moving into the patient's bladder. The fixing component 2 includes a locking ring 21 that slides onto the external catheter 11. The locking ring 21 is made of a flexible material. When the external catheter 11 is inserted into the patient's bladder and the balloon 15 is inflated, the doctor slides the locking ring 21 to the patient's urethral opening, so that the locking ring 21 can press against the urethral opening, thereby forming a blockage at the patient's urethral opening and preventing the balloon 15 from driving the external catheter 11 into the bladder during the patient's movement. The locking ring 21 has a hollow internal structure, which can be filled with gas or liquid, making it relatively soft and preventing abrasion to the patient's skin when in contact with the patient.
[0045] Reference Figure 1 , Figure 2 and Figure 3 A lubricating ring 22 is provided on the side of the clamping ring 21 away from the balloon part 15. The lubricating ring 22 is slidably sleeved on the external catheter 11 and fixed to the clamping ring 21. A lubricating element is provided on the inner circumferential surface of the lubricating ring 22 to contact the wall of the external catheter 11, thereby lubricating the wall of the external catheter 11 and making it easier to insert the external catheter 11 into the patient's bladder through the urethral opening. The lubricating ring 22 has a hollow interior and an annular opening on its inner circumferential surface. The lubricating element includes a sponge ring 23 installed inside the lubricating ring 22. The sponge ring 23 can absorb the lubricant used for lubrication. When the lubricating ring 22 slides on the external catheter 11, it can spread the lubricant on the sponge ring 23 evenly onto the external catheter 11, thereby making it easier for the doctor to insert the external catheter 11 and the inner catheter 12 into the patient's bladder. An injection port is provided on the outer wall of the lubrication ring 22, and a fixing plug 24 is threaded to the injection port. When the sponge ring 23 can no longer lubricate, the doctor can open the fixing plug 24 and fill the lubrication ring 22 with lubricant through the injection port. The lubricant is gradually absorbed by the sponge ring 23. Before each use of the external catheter 11, the doctor can slide the lubrication ring 22 to make the lubricant on the sponge ring 23 evenly spread onto the external catheter 11, so that the external catheter 11 can pass through the urethral opening more smoothly.
[0046] Reference Figure 2 , Figure 3 and Figure 4 Figure 2 Figure 3 Figure 4 A fixing ring 25 is provided on the side of the lubricating ring 22 away from the clamping ring 21. The fixing ring 25 is slidably sleeved on the external catheter 11 and is connected and fixed to the lubricating ring 22. When it is necessary to move the clamping ring 21 and the lubricating ring 22, the doctor moves the fixing ring 25 by controlling it. A fixing element is provided on the fixing ring 25 to fix its position. After the fixing ring 25 is moved, it is fixed to the external catheter 11 by the fixing element. The fixing element includes a fixing ring 25. Multiple fixing plates 26 are located at the end away from the lubrication ring 22. The length direction of the fixing plates 26 is the same as that of the outer conduit 11, and the fixing plates 26 are arc-shaped. The multiple fixing plates 26 are evenly distributed circumferentially around the axis of the fixing ring 25. The fixing plates 26 are elastic and can be bent and deformed. An elastic gap is provided between adjacent fixing plates 26. When the end of the fixing plate 26 away from the lubrication ring 22 is subjected to external force, it can move towards the wall of the outer conduit 11. The end of the fixing plate 26 away from the lubrication ring 22 extends away from the lubrication ring 22 and is inclined towards the wall of the outer conduit 11. A thread is provided on the outer surface of each fixing plate 26 at the end away from the lubrication ring 22. A rotating ring 27 is threadedly connected to the multiple fixing plates 26. The rotating ring 27 can move on the fixing plate 26. When the rotating ring 27 rotates to the end of the fixing plate 26 away from the lubrication ring 22, the end of the fixing plate 26 can press against the wall of the outer conduit 11, but does not press against the inner conduit 12 inside the outer conduit 11, and does not affect the inner conduit 12 inside the outer conduit 11. Normal flow of urine; the rotating ring 27 is used to clamp and fix the fixing plate 26 to the external catheter 11, thereby fixing the clamping ring 21 and preventing the external catheter 11 from moving into the patient's bladder. When the patient's catheterization is completed and it is necessary to remove the external catheter 11 from the patient's bladder, the rotating ring 27 is loosened and the fixing ring 25 is controlled to move the clamping ring 21 and the lubrication ring 22 away from the patient, and the gas or liquid in the balloon 15 is released. Finally, the external catheter 11 is pulled out from the patient's bladder.
[0047] The implementation principle of a medical catheter in this application embodiment is as follows: During the catheterization process, the doctor slides the fixing ring 25 to allow the lubricant on the sponge ring 23 to be evenly applied to the external catheter 11. Then, the end of the external catheter 11 is inserted into the patient's bladder through the urethral opening. During insertion, the unblocking cap 18 inside the external catheter 11 can clear any blockages, allowing the end of the external catheter 11 to smoothly enter the patient's bladder. Next, the air balloon 15 is inflated and deformed through the inflation tube 16 and clamped into the patient's bladder. Then, the fixing ring 25 is slid to allow the clamping ring 21 to be clamped against the patient's urethral opening. Finally, the rotating ring 27 is rotated to clamp and fix the external catheter 11 through the fixing plate 26, thereby allowing the urine in the patient's bladder to flow into the catheter bag.
[0048] Those skilled in the art should understand that the embodiments of the present invention described above are merely examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functions and structural principles of the present invention have been shown and explained in the embodiments. Without departing from the described principles, the implementation of the present invention may have any modifications or variations.
Claims
1. A medical urinary catheter, comprising a catheter body component and a urinary catheter bag connected to the catheter body component, characterized in that: The main body of the catheter includes an outer catheter and an inner catheter disposed inside the outer catheter. One end of the inner catheter is fixed to the inside of the outer catheter. A urinary inlet is provided on the outer catheter near the end of the inner catheter, and the urinary inlet communicates with the inside of the inner catheter. A urinary bag is connected to the ends of the outer catheter and the inner catheter away from the urinary inlet. An inflatable and deformable air bladder is provided on the outer catheter near the urinary inlet, and an airflow channel is provided between the outer catheter and the inner catheter, which communicates with the air bladder. A fixing component is provided on the outer catheter for controlling the movement of the outer catheter and the inner catheter into the body.
2. The medical catheter according to claim 1, characterized in that: The fixing component includes a clamping ring that is slidably fitted onto the external catheter, and the clamping ring is slidably in contact with the outside of the urethral opening.
3. A medical catheter according to claim 2, characterized in that: The clamping ring has an internal hollow structure, which can be filled with gas or liquid, and the clamping ring is made of a flexible material.
4. A medical catheter according to claim 1, characterized in that: The fixing assembly also includes a fixing ring that is slidably sleeved on the external catheter and a fixing member disposed on the fixing ring and fixing the fixing ring. The fixing ring is located on the side of the clamping ring away from the catheter port, and the fixing ring is connected to the clamping ring.
5. A medical catheter according to claim 4, characterized in that: The fastener includes multiple fixing plates disposed on a fixing ring and at one end away from the abutting ring. The multiple fixing plates are evenly distributed circumferentially around the axis of the fixing ring, and the ends of the fixing plates away from the fixing ring can extend obliquely toward the surface of the outer conduit. The fixing plates are elastic, and the external threads of the multiple fixing plates are connected to a rotating ring. By controlling the rotation of the rotating ring, the ends of the fixing plates can be pressed against the outer conduit.
6. A medical catheter according to claim 2, characterized in that: A lubricating ring is provided between the clamping ring and the fixing ring. The lubricating ring is slidably fitted on the outer guide tube. The lubricating ring is connected to both the clamping ring and the fixing ring. A lubricating element for lubricating the outer guide tube is provided on the inner circumferential surface of the lubricating ring.
7. A medical catheter according to claim 6, characterized in that: The lubrication ring is hollow inside and has an annular opening on one side facing inward. The lubricating component includes a sponge ring disposed inside the lubrication ring, and the sponge ring can absorb lubricant.
8. A medical catheter according to claim 6, characterized in that: The lubrication ring has an injection port on its outer wall, and a fixing plug is threaded onto the injection port.
9. A medical catheter according to claim 1, characterized in that: A rigid drainage cap is provided inside the external catheter and at the end near the urinary inlet, and the drainage cap has a corresponding urinary inlet.
10. A medical catheter according to claim 1, characterized in that: An inflation tube is connected to the external conduit, and the inflation tube is connected to the airflow channel.