Automatic lubricating and sterilizing device for medical catheter

Abstract

The application relates to the technical field of catheters, and provides an automatic lubricating and sterile processing device for a medical catheter, which comprises a catheter main body, a liquid outlet head fixedly connected to the left end of the catheter main body, a liquid inlet head fixedly connected to the right end of the catheter main body, an anchoring assembly arranged on the outer wall of the catheter main body, a sleeve, an inner wall of the sleeve arranged on the outer wall of the catheter main body, blocking sheets fixedly connected to the left and right sides of the outer wall of the sleeve, support sleeves rotatably connected to the outer wall of the blocking sheets, liquid storage bags arranged in the cavities between the support sleeves and the sleeve, sealing membranes arranged at the left and right ends of the liquid storage bags, extrusion pieces slidably connected to the inner wall of the support sleeve, and the inner wall of the extrusion piece arranged on the outer wall of the liquid storage bag. The catheter and the lubricating liquid are integrated and sterilely packaged, manual contact with the lubricating liquid is not needed in the whole lubricating process, secondary sterile pollution in clinical operation is eliminated, and the sterile safety of the catheter in use is ensured from the structure.

Description

Technical Field

[0001] This invention relates to the field of urinary catheter technology, specifically to an automatic lubrication and sterilization device for medical urinary catheters. Background Technology

[0002] Urinary catheters are widely used interventional medical consumables in clinical urology, postoperative surgery, and intensive care. They are mainly used for urine drainage, bladder irrigation, and postoperative urination assistance, and are key medical devices for maintaining urinary tract patency and reducing postoperative complications. As an invasive urethral insertion device, pre-insertion lubrication is crucial for reducing urethral mucosal damage, improving patient comfort, and ensuring clinical safety. Aseptic and uniform lubrication is a necessary prerequisite for the standardized clinical use of urinary catheters.

[0003] Currently, the lubrication of urinary catheters in clinical practice often involves separate packaging of the lubricant and the catheter for independent use. Medical staff must first open the individually packaged medical lubricant and then manually apply it to the outer wall of the catheter. This routine procedure, with the lubricant and catheter stored separately and used in separate steps, exposes the lubricant to outside air, the hands of medical staff, or the work surface during opening and manual application, compromising the sterility of both the catheter and the lubricant and increasing the risk of urinary tract infection in patients. Furthermore, manual application relies on the experience of medical staff, making it difficult to ensure even coverage of the entire catheter. Insufficient lubrication in certain areas can lead to increased insertion resistance and damage to the urethral mucosa. The cumbersome separate procedure also increases the workload of clinical staff and fails to meet the clinical need for efficient, sterile, and convenient catheter lubrication. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides an automatic lubrication and sterile treatment device for medical catheters, which solves the problems of low efficiency and uneven lubrication associated with manual application.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an automatic lubrication and sterilization device for medical catheters, comprising: The catheter body has an outlet head fixedly connected to the left end and an inlet head fixedly connected to the right end. An anchoring assembly is provided on the outer wall of the catheter body. The catheter sleeve has its inner wall set on the outer wall of the main body of the catheter. A sealing plate is fixedly connected to both sides of the outer wall of the catheter sleeve. A support sleeve is rotatably connected to the outer wall of the sealing plate. A reservoir is disposed in the cavity between the support sleeve and the catheter sleeve. Sealing membranes are provided at both ends of the reservoir. A squeezing element is slidably connected to the inner wall of the support sleeve. The inner circumference of the squeezing element is set on the outer wall of the reservoir. An outlet sleeve is fixedly connected to both ends of the catheter sleeve and rotatably connected to the outer wall of the support sleeve.

[0006] Preferably, the anchoring assembly includes an air supply tube and an air bladder. The air supply tube is located on the left side of the outer wall of the catheter body. The air supply tube is connected to the air bladder through a pipe disposed on the inner wall of the catheter body. The air bladder is fixedly connected to the right side of the outer wall of the catheter body.

[0007] Preferably, the inner walls of both the left and right sides of the support sleeve have two grooves spaced 15° apart in the circumferential direction. Only one of the two grooves on each side is provided with a limiting ball. The limiting ball is used to cooperate with the slot on the outer wall of the sealing piece to achieve rotational positioning.

[0008] Preferably, the extrusion member is I-shaped, and a plurality of needles are evenly arranged on its inner circumference, with the tips of the needles facing the sealing membrane of the reservoir.

[0009] Preferably, the outer wall of the support sleeve is provided with a limiting member, which is engaged with the outer wall of the extruder and is elastic, used to restrict the axial movement of the extruder.

[0010] Preferably, both the liquid outlet sleeve and the support sleeve are provided with anti-slip pads on their outer walls.

[0011] Preferably, the support sleeve and the sealing plate are provided with through holes of the same size at corresponding positions, and the side wall of the liquid outlet sleeve is also provided with through holes. The through holes are used to allow the lubricating fluid to flow from the reservoir through the sealing plate and the support sleeve in sequence and then out of the liquid outlet sleeve to the surface of the catheter body.

[0012] An automated lubrication and sterile treatment method for a medical urinary catheter includes the following steps: Step 1: Remove the entire catheter body from the sterile packaging bag, making the catheter body perpendicular to the ground; Step 2: Remove the limiting piece fitted on the outer wall of the extrusion part to release the limiting effect on the extrusion part; Step 3: Hold the support sleeve tightly through the anti-slip pad on its outer wall, and then press the extrusion piece along the axis. The extrusion force will cause the sealing membranes at both ends of the reservoir to break. At the same time, the needles on the inner circumference of the extrusion piece will help puncture the reservoir, allowing the sterile lubricating fluid in the reservoir to flow out and be temporarily stored in the cavity between the support sleeve and the tube sleeve. Step 4: Hold the outlet sleeve and the support sleeve respectively and rotate them relative to each other so that the through hole on the support sleeve coincides with the through hole on the sealing piece, thereby opening the outlet channel of the lubricating fluid. Under the action of gravity or residual pressure, the lubricating fluid flows into the outlet sleeve through this channel and finally coats the outer wall of the catheter body evenly from the through hole on the side wall of the outlet sleeve. Step 5: Rotate the main body of the catheter 180° around its axis to allow the lubricant coated on one side of the catheter body to flow and cover the entire outer wall of the catheter, thus completing the automatic lubrication of the catheter.

[0013] Preferably, in step three, after the sealing film is completely destroyed by pressing the extruder, the limiting member is re-sleeved onto the outer wall of the extruder.

[0014] Preferably, in step four, when the liquid outlet sleeve and the support sleeve are rotated relative to each other, the limiting ball and the outer wall groove of the sealing plate can be used to obtain a clear rotation angle positioning, ensuring that the through hole is accurately aligned.

[0015] Working principle: The cannula is pre-fitted onto the outer wall of the front end of the urinary catheter body as the mounting carrier for the lubrication components. The reservoir is sealed in the closed cavity enclosed by the support sleeve and the cannula. Both ends are sterilely sealed by sealing membranes. The interior is pre-filled with medical sterile lubricant. The elastic limiting element is snapped into the outer wall of the compression element to form an anti-accidental contact locking structure, which prevents the compression element from being accidentally pressed during transportation and storage, thus avoiding lubricant leakage. The fluid outlet holes on the support sleeve and the sealing plate are initially in a misaligned and closed state, ensuring the sterility and sealing of the reservoir throughout the process. In clinical use, medical staff remove the main body of the urinary catheter from the sterile packaging intact, keep the catheter vertical to use gravity to assist the directional flow of lubricating fluid, first remove the limiting piece to release the axial limitation on the squeezing piece, hold the support sleeve firmly with one hand through the anti-slip pad to maintain stability, and press the squeezing piece inward along the axis with the other hand. The squeezing force acts directly on the reservoir, causing the sealing membranes at both ends to rupture under pressure. At the same time, the needles evenly distributed on the inner circumference of the squeezing piece puncture the reservoir body, ensuring that the sterile lubricating fluid is completely released and temporarily stored in the cavity between the support sleeve and the tube sleeve. After pressing in place, re-clamp the limiting piece to fix the position of the squeezing piece and prevent the lubricating fluid from flowing back. Then, hold the anti-slip pads on the outer walls of the discharge sleeve and the support sleeve respectively, and rotate them relative to each other. The limiting ball on the inner wall of the support sleeve and the groove on the outer wall of the sealing piece precisely engage, achieving a clear rotation angle positioning. This ensures that the through holes of the support sleeve and the sealing piece are fully aligned, opening the lubricant outflow channel. Under the action of gravity and residual pressure in the cavity, the lubricant flows into the discharge sleeve through the through holes of the sealing piece and the support sleeve in sequence, and then is evenly coated on one side of the outer wall of the catheter body through the through holes on the side wall of the discharge sleeve. Finally, rotate the main body of the catheter 180° around its own axis, and move the sleeve along the axial direction of the main body of the catheter to make the lubricant evenly cover the entire outer wall of the catheter, completing the fully automatic aseptic lubrication process. After lubrication, the sleeve can be moved to the non-insertion end of the catheter without affecting the normal anchoring and clinical insertion of the catheter.

[0016] This invention provides an automatic lubrication and sterilization device for medical urinary catheters. It has the following beneficial effects: 1. This invention achieves integrated aseptic packaging of the urinary catheter and lubricant, eliminating the need for manual contact with the lubricant throughout the lubrication process, thus preventing secondary aseptic contamination during clinical operations and structurally ensuring the aseptic safety of the urinary catheter.

[0017] 2. This invention allows for automatic lubrication of the entire outer wall of the urinary catheter through two simple steps: pressing to unlock and rotating to dispense fluid. This greatly simplifies the operation process, reduces the difficulty of operation for medical staff, and improves the efficiency of clinical catheter insertion.

[0018] 3. The present invention adopts a limiting positioning and through-hole precise liquid control structure, which can control the amount of lubricating fluid outflow, coat it evenly without any omissions, and the lubrication component can move along the urinary catheter without affecting the anchoring function of the urinary catheter, making it suitable for a variety of clinical insertion scenarios. Attached Figure Description

[0019] Figure 1 This is a perspective view of the present invention; Figure 2 This is a schematic diagram of the anti-slip mat structure of the present invention; Figure 3 This is a schematic diagram of the sleeve structure of the present invention; Figure 4 This is a schematic diagram of the sealing membrane structure of the present invention; Figure 5 This is a schematic diagram of the extrusion component structure of the present invention; Figure 6 This is a schematic diagram of the sealing plate structure of the present invention; Figure 7 for Figure 6 Enlarged view of point A; Figure 8 This is a schematic diagram of the support sleeve structure of the present invention.

[0020] The components include: 1. Catheter body; 2. Outlet head; 3. Inlet head; 4. Air tube; 5. Balloon; 6. Tube sleeve; 7. Occlusion plate; 8. Limiting ball; 9. Support sleeve; 10. Outlet sleeve; 11. Reservoir; 12. Sealing membrane; 13. Squeezing component; 14. Needle; 15. Limiting component; 16. Anti-slip pad. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Example: Please see the appendix Figure 1 - Appendix Figure 8 This invention provides an automatic lubrication and sterilization device for medical catheters, comprising: The catheter body 1 has an outlet head 2 fixedly connected to the left end of the catheter body 1 and an inlet head 3 fixedly connected to the right end of the catheter body 1. An air supply tube 4 and an air bag 5 are provided on the outer wall of the catheter body 1. The tubing sleeve 6 has its inner wall set on the outer wall of the catheter body 1. Both sides of the outer wall of the tubing sleeve 6 are fixedly connected to the sealing pieces 7. The outer wall of the sealing pieces 7 is rotatably connected to the support sleeve 9. The cavity between the support sleeve 9 and the tubing sleeve 6 is provided with a reservoir 11. Both ends of the reservoir 11 are provided with sealing membranes 12. The inner wall of the support sleeve 9 is slidably connected to the squeezing member 13. The inner circumference of the squeezing member 13 is set on the outer wall of the reservoir 11. Both ends of the tubing sleeve 6 are fixedly connected to the outlet sleeve 10. The outlet sleeve 10 is rotatably connected to the outer wall of the support sleeve 9. Specifically, the main body 1 of the urinary catheter is the core insertion component of the device, undertaking the core function of urine drainage. The left end outlet head 2 is used for stable urine output to avoid poor drainage, and the right end inlet head 3 is used to connect to the external drainage pipeline to realize the connection of the drainage channel. The air supply tube 4 in the anchoring component is used to connect to the external inflation device. Gas is delivered to the airbag 5 through the pre-set pipe on the inner wall of the main body 1 of the urinary catheter. The airbag 5 is fixed to the right side of the outer wall of the main body 1 of the urinary catheter. After inflation, the expansion realizes the anchoring and fixation of the urinary catheter in the body, preventing slippage after insertion and ensuring the stability of the urinary catheter in use.

[0023] The anchoring assembly includes an air supply tube 4 and an airbag 5. The air supply tube 4 is located on the left side of the outer wall of the catheter body 1. The air supply tube 4 is connected to the airbag 5 through a pipe set on the inner wall of the catheter body 1. The airbag 5 is fixedly connected to the right side of the outer wall of the catheter body 1. The inner walls of both sides of the support sleeve 9 have two grooves spaced 15° apart circumferentially. Only one of the two grooves on each side has a limiting ball 8. The limiting ball 8 is used to cooperate with the groove on the outer wall of the sealing piece 7 to achieve rotational positioning. The extrusion member 13 is I-shaped, and multiple needles 14 are evenly arranged on its inner circumference. The tip of head 14 faces the sealing membrane 12 of reservoir 11. The outer wall of support sleeve 9 is provided with a limiting member 15. The limiting member 15 is snapped into the outer wall of extrusion member 13 and is elastic to limit the axial movement of extrusion member 13. The outer walls of extrusion sleeve 10 and support sleeve 9 are provided with anti-slip pads 16. The corresponding positions of support sleeve 9 and sealing plate 7 are provided with through holes of the same size. The side wall of extrusion sleeve 10 is also provided with through holes. The through holes are used to allow lubricating fluid to flow from reservoir 11 through sealing plate 7 and support sleeve 9 in sequence and then flow out from extrusion sleeve 10 to the surface of catheter body 1. Specifically, the sleeve 6 serves as the core mounting carrier for the lubrication assembly. It can move axially along the outer wall of the catheter body 1 without interfering with the normal use of the catheter. The sealing plate 7 is fixed on both sides of the sleeve 6, forming a rotating fit structure with the support sleeve 9. The flow and sealing of the lubricant are controlled by the misalignment and alignment of the through holes. The limiting ball 8 is installed in the groove on the inner wall of the support sleeve 9, and cooperates with the slot on the outer wall of the sealing plate 7 to achieve rotational positioning, ensuring precise alignment of the through holes and preventing lubricant leakage. The support sleeve 9 and the sleeve 6 together form a sealed cavity for installing the reservoir 11 and temporarily storing the released lubricant. The outlet sleeve 10 is fixed at both ends of the sleeve 6, and through holes are opened on the side wall to allow the lubricant to be evenly coated onto the outer wall of the catheter. The reservoir 11 is used to pre-store medical sterile lubricant, realizing the integrated packaging of lubricant and urinary catheter. The sealing film 12 is used to seal both ends of the reservoir 11 to maintain the sterility of the lubricant throughout the process. The squeezing member 13 is an I-shaped sliding structure that moves axially along the inner wall of the support sleeve 9, providing squeezing force to break the sealing film 12. The needle 14 is evenly distributed along the inner circumference of the squeezing member 13 to assist in puncturing the reservoir 11, ensuring that the lubricant is completely released without residue. The limiting member 15 is an elastic snap-fit ​​component, which not only prevents accidental contact during transportation and storage, but also fixes the position of the squeezing member 13 after pressing. The anti-slip pad 16 is set on the outer wall of the dispensing sleeve 10 and the support sleeve 9 to improve the grip friction and adapt to convenient clinical operation.

[0024] An automated lubrication and sterile treatment method for a medical urinary catheter includes the following steps: Step 1: Remove the entire catheter body 1 from the sterile packaging bag, making the catheter body 1 perpendicular to the ground; Step 2: Remove the limiting piece 15 fitted on the outer wall of the extrusion piece 13 to release the limiting effect on the extrusion piece 13; Step 3: Hold the support sleeve 9 firmly through the anti-slip pad 16 on its outer wall, and then press the extrusion member 13 along the axis. The extrusion force will cause the sealing membrane 12 at both ends of the reservoir 11 to be broken. At the same time, the needle 14 on the inner circumference of the extrusion member 13 will help to puncture the reservoir 11, so that the sterile lubricating fluid in the reservoir 11 will flow out and be temporarily stored in the cavity between the support sleeve 9 and the tube sleeve 6. Step 4: Hold the outlet sleeve 10 and the support sleeve 9 respectively and rotate them relative to each other so that the through hole on the support sleeve 9 coincides with the through hole on the sealing piece 7, thereby opening the outlet channel of the lubricating fluid. Under the action of gravity or residual pressure, the lubricating fluid flows into the outlet sleeve 10 through the channel and finally coats the outer wall of the catheter body 1 evenly from the through hole on the side wall of the outlet sleeve 10. Step 5: Rotate the catheter body 1 180° around its axis to allow the lubricant coated on one side of the catheter body 1 to flow and cover the entire outer wall of the catheter, thus completing the automatic lubrication of the catheter.

[0025] In step three, after pressing the extrusion member 13 to completely destroy the sealing film 12, the limiting member 15 is re-sleeved onto the outer wall of the extrusion member 13. In step four, when the liquid outlet sleeve 10 and the support sleeve 9 are rotated relative to each other, the limiting ball 8 and the outer wall groove of the sealing piece 7 can obtain a clear rotation angle positioning to ensure accurate overlap of the through hole.

[0026] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An automatic lubrication and sterilization device for medical urinary catheters, characterized in that, include: The catheter body (1) has an outlet head (2) fixedly connected to the left end and an inlet head (3) fixedly connected to the right end. An anchoring assembly is provided on the outer wall of the catheter body (1). The inner wall of the tube sleeve (6) is set on the outer wall of the catheter body (1). The left and right sides of the outer wall of the tube sleeve (6) are fixedly connected to the sealing pieces (7). The outer wall of the sealing pieces (7) is rotatably connected to the support sleeve (9). The cavity between the support sleeve (9) and the tube sleeve (6) is provided with a reservoir (11). The left and right ends of the reservoir (11) are provided with sealing membranes (12). The inner wall of the support sleeve (9) is slidably connected to the squeezing member (13). The inner circumference of the squeezing member (13) is set on the outer wall of the reservoir (11). The left and right ends of the tube sleeve (6) are fixedly connected to the outlet sleeve (10). The outlet sleeve (10) is rotatably connected to the outer wall of the support sleeve (9).

2. The automatic lubrication and sterilization device for a medical catheter according to claim 1, characterized in that, The anchoring assembly includes an air supply tube (4) and an air bladder (5). The air supply tube (4) is located on the left side of the outer wall of the catheter body (1). The air supply tube (4) is connected to the air bladder (5) through a pipe set on the inner wall of the catheter body (1). The air bladder (5) is fixedly connected to the right side of the outer wall of the catheter body (1).

3. The automatic lubrication and sterilization device for a medical catheter according to claim 1, characterized in that, The support sleeve (9) has two grooves on its left and right inner walls that are spaced 15° apart in the circumferential direction. Only one of the two grooves on each side is provided with a limiting ball (8). The limiting ball (8) is used to cooperate with the slot on the outer wall of the sealing piece (7) to achieve rotational positioning.

4. The automatic lubrication and sterilization device for a medical catheter according to claim 1, characterized in that, The extrusion piece (13) is I-shaped, and a plurality of needles (14) are evenly arranged on its inner circumference along the circumferential direction. The tips of the needles (14) face the sealing membrane (12) of the liquid storage bladder (11).

5. The automatic lubrication and sterilization device for a medical catheter according to claim 1, characterized in that, The outer wall of the support sleeve (9) is provided with a limiting member (15), which is engaged with the outer wall of the extruder (13) and is elastic, used to restrict the axial movement of the extruder (13).

6. The automatic lubrication and sterilization device for a medical catheter according to claim 1, characterized in that, The outer walls of the liquid outlet sleeve (10) and the support sleeve (9) are both provided with anti-slip pads (16).

7. The automatic lubrication and sterilization device for a medical catheter according to claim 1, characterized in that, The support sleeve (9) and the sealing plate (7) are provided with through holes of the same size at corresponding positions. The side wall of the liquid outlet sleeve (10) is also provided with through holes. The through holes are used to allow the lubricating fluid to flow from the reservoir (11) through the sealing plate (7) and the support sleeve (9) in sequence, and then flow out from the liquid outlet sleeve (10) to the surface of the catheter body (1).

8. An automatic lubrication and sterilization method for a medical catheter, using an automatic lubrication and sterilization device for a medical catheter as described in any one of claims 1-7, characterized in that, Includes the following steps: Step 1: Remove the entire catheter body (1) from the sterile packaging bag, making the catheter body (1) perpendicular to the ground; Step 2: Remove the limiting piece (15) fitted on the outer wall of the extrusion piece (13) to release the limiting effect on the extrusion piece (13); Step 3: Hold the support sleeve (9) tightly through the anti-slip pad (16) on its outer wall, and then press the extrusion piece (13) axially. The extrusion force will cause the sealing membrane (12) at both ends of the reservoir (11) to be broken. At the same time, the needle (14) on the inner circumference of the extrusion piece (13) will help to puncture the reservoir (11), so that the sterile lubricating fluid in the reservoir (11) will flow out and be temporarily stored in the cavity between the support sleeve (9) and the tube sleeve (6). Step 4: Hold the outlet sleeve (10) and the support sleeve (9) respectively and rotate them relative to each other so that the through hole on the support sleeve (9) coincides with the through hole on the sealing piece (7), thereby opening the outlet channel of the lubricating fluid. Under the action of gravity or residual pressure, the lubricating fluid flows into the outlet sleeve (10) through the channel and finally evenly coats the outer wall of the catheter body (1) from the through hole on the side wall of the outlet sleeve (10). Step 5: The tube sleeve (6) can move on the outer wall of the catheter body (1), so that the lubricant coated on one side of the catheter body (1) flows to cover the entire outer wall of the catheter, thus completing the automatic lubrication of the catheter.

9. An automatic lubrication and sterilization device for a medical catheter according to claim 8, characterized in that, In step three, after the sealing film (12) is completely destroyed by pressing the extruder (13), the limiting member (15) is re-sleeved on the outer wall of the extruder (13).

10. An automatic lubrication and sterilization device for a medical catheter according to claim 8, characterized in that, In step four, when the liquid outlet sleeve (10) and the support sleeve (9) are rotated relative to each other, the limiting ball (8) and the outer wall groove of the sealing piece (7) can be used to obtain a clear rotation angle positioning, ensuring that the through hole is accurately aligned.

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