Hydrophilic-coated urinary catheter packaging for preventing liquid carryover and squeeze infiltration

By designing a hydrophilic coating for urinary catheters that prevents liquid carry-out and is resistant to squeezing and wetting, the problem of solution leakage during storage and use of urinary catheters has been solved. This achieves controlled solution outflow and dry-wet separation of the urinary catheter, extending shelf life and simplifying operation.

WO2026152536A1PCT designated stage Publication Date: 2026-07-23ZHEJIANG YUTEGEER MEDICAL SUPPLIES CO LTD
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Patent Information

Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
ZHEJIANG YUTEGEER MEDICAL SUPPLIES CO LTD
Filing Date
2025-03-06
Publication Date
2026-07-23

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Abstract

Hydrophilic-coated urinary catheter packaging for preventing liquid carryover and squeeze infiltration. The hydrophilic-coated urinary catheter packaging comprises a tube body (1), a connector (2), and two toggles (7). A receiving cavity for accommodating a urinary catheter (3) is provided at a central position inside the tube body (1), and water storage tanks (4) are arranged on both sides of the receiving cavity, and the water storage tanks (4) are used for storing a solution. A tank wall film (41) is provided on a side of each water storage tank (4) adjacent to the receiving cavity. A structure for fixing the toggle (7) is provided at a top end inside the water storage tank (4), and a structure capable of piercing the tank wall film (41) is provided at a bottom end of the toggle (7). Soft rubber pressing shells (6) corresponding to the toggles (7) are arranged on both sides of the exterior of the tube body (1). Under normal conditions, the solution is stored in the water storage tanks (4), thereby preventing long-term immersion of the urinary catheter (3) in the solution and extending the storage life of both the solution and the urinary catheter (3). When the urinary catheter (3) is to be used, it is only necessary to press the soft rubber pressing shells (6) on both sides, and the tank wall film (41) is pierced by the toggles (7), after which the solution flows along the urinary catheter (3) to complete wetting, thereby achieving true "dry-wet separation" of the urinary catheter (3).
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Description

A hydrophilic coated urinary catheter packaging that prevents liquid runoff and is resistant to pressure wetting. Technical Field

[0001] This invention relates to the field of medical supplies technology, specifically to a hydrophilic coated urinary catheter packaging that prevents liquid carry-out and is resistant to compression and wetting. Background Technology

[0002] The invention of urinary catheters has greatly alleviated patients' suffering. With advancements in technology, more and more urinary catheters have entered the market, and patients' demands for them have also increased. Currently, most urinary catheters are hydrophilic, which is not only inexpensive but also makes them more acceptable to patients.

[0003] Currently, conventional hydrophilic urinary catheters on the market consist of a catheter inserted into a tube filled with a solution, with the catheter immersed in the solution. This storage method has two drawbacks: firstly, the catheter coating is prone to damage from prolonged immersion in liquid; secondly, during use, the catheter's orientation is inconsistent due to different operators, and it may be upright, upside down, or even with the cap facing down, potentially causing the solution inside the tube to leak out and cause external contamination. Technical solutions

[0004] To address the shortcomings of existing technologies, this invention provides a hydrophilic coated urinary catheter packaging that prevents liquid carry-out and is resistant to compression wetting, thus solving the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a hydrophilic coated urinary catheter package that prevents liquid carry-out and is resistant to compression and wetting, used for loading a urinary catheter. The hydrophilic coated urinary catheter package includes a tube body, a connector, and two levers. The center of the tube body is a cavity for accommodating the urinary catheter. Water storage tanks are provided on both sides of the cavity for storing solutions. The side of the water storage tank adjacent to the cavity is a thin film wall. A structure for fixing the levers is provided at the top of the water storage tank. A structure for piercing the thin film wall is provided at the bottom of the levers. Soft rubber covers corresponding to the levers are provided on both sides of the tube body.

[0006] Preferably, the tube body is formed by fastening together two identical front and rear parts.

[0007] Preferably, the top of the water storage tank is provided with a straight-line limiting groove, and the top of the paddle is provided with a straight-line limiting block that can be inserted into the limiting groove.

[0008] Preferably, the bottom end of the paddle is provided with a straight tooth, the end of the tooth corresponding to the membrane of the groove wall is spike-shaped, the bottom of the water storage tank is provided with a positioning groove, the oblique teeth at the bottom of the tooth and the oblique teeth of the positioning groove mesh with each other, and the oblique surface of the tooth is inclined towards the catheter.

[0009] Preferably, the upper and lower surfaces of the water storage tank are covered with a sealing film.

[0010] Preferably, the connector includes a connector port, a connector body, and an extension pipe section arranged sequentially from top to bottom. The connector body is used to fix it to the pipe body, the extension pipe section forms a return groove between itself and the membrane on the groove wall, and the connector port is used to cover the cover.

[0011] Preferably, the extension tube section is provided with a septum membrane that is in close contact with the urinary catheter.

[0012] Preferably, an umbrella-shaped cap is provided at the bottom of the connector body on the outside of the extension pipe section.

[0013] Preferably, the outer ring of the connector port is provided with a wave-shaped corrugated groove one, and the bottom of the cover is provided with a wave-shaped corrugated groove two that matches the first corrugated groove.

[0014] Preferably, the soft rubber casing is integrated with the tube body notch using a secondary injection molding process. Beneficial effects

[0015] This invention provides a hydrophilic coated urinary catheter packaging that prevents liquid runoff and is resistant to compression wetting. It offers the following advantages:

[0016] 1. This hydrophilic coated urinary catheter packaging, which prevents liquid runoff and squeeze-wetting, stores the solution in a reservoir under normal conditions, avoiding prolonged immersion of the catheter in the solution and extending the shelf life of both the solution and the catheter. When the catheter is needed, simply press the soft rubber covers on both sides, and use the lever to puncture the thin film on the reservoir wall. The solution then flows down the catheter to complete the wetting process, truly achieving "dry-wet separation" of the catheter.

[0017] 2. This hydrophilic coated urinary catheter packaging prevents liquid leakage and squeeze-induced wetting. When the catheter is being taken out or after removal, the catheter body can be inverted or laid flat, and the solution will flow back into the water tank or return tank, avoiding unnecessary pollution caused by the solution flowing out of the packaging. This makes the operation process simpler and cleaner for operators. Attached Figure Description

[0018] Figure 1 is an external isometric view of the present invention;

[0019] Figure 2 is a schematic diagram of the exploded structure of the present invention;

[0020] Figure 3 is a schematic diagram of the connector disassembly of the present invention;

[0021] Figure 4 is a half-sectional isometric view of the present invention;

[0022] Figure 5 is a half-sectional plan view of the present invention;

[0023] Figure 6 is a schematic diagram of the state in which the thin film on the groove wall of the present invention is punctured by the shovel.

[0024] Figure 7 shows the solution state when the present invention is inverted after use;

[0025] Figure 8 shows the solution state when the present invention is laid flat after use.

[0026] In the diagram: 1. Tube body, 2. Connector, 3. Urinary catheter, 4. Water storage tank, 41. Tank wall membrane, 5. Return tank, 6. Soft rubber cover, 7. Paddle, 8. Limiting groove, 9. Limiting block, 10. Positioning slot, 11. Locking tooth, 12. Sealing membrane, 13. Isolation membrane, 14. Solution, 21. Connector body, 22. Extension tube section, 23. Connector port, 24. Corrugated slot one, 25. Sealing ring, 26. Cap, 27. Corrugated slot two, 28. Umbrella-shaped cap, 29. Anti-slip corrugations. Detailed Implementation

[0027] This invention provides a hydrophilic coated urinary catheter packaging that prevents liquid carry-out and is resistant to squeezing and wetting, as shown in Figures 1-8. It is used to load a urinary catheter 3. The hydrophilic coated urinary catheter packaging includes a tube body 1, a connector 2, and two levers 7.

[0028] As shown in Figures 2 and 4, the upper part of the tube body 1 is bulging, and the lower part is straight. The tube body 1 is composed of two identical front and rear parts that are fastened together. The center of the tube body 1 is a cavity for accommodating the urinary catheter 3. Water storage tanks 4 are provided on both sides of the cavity inside the bulging tube body 1. The water storage tanks 4 are used to store the solution 14. The side of the water storage tank 4 adjacent to the cavity is a thin film 41.

[0029] As shown in Figures 2 and 5, the top of the water storage tank 4 is provided with a structure for fixing the lever 7. Specifically, the top of the water storage tank 4 is provided with a straight-line limiting groove 8, and the top of the lever 7 is provided with a straight-line limiting block 9 that can be inserted into the limiting groove 8. The bottom of the lever 7 is provided with a structure that can pierce the tank wall membrane 41. Specifically, the bottom of the lever 7 is provided with a straight-line locking tooth 11. The end of the locking tooth 11 corresponding to the tank wall membrane 41 is spike-shaped. The bottom of the water storage tank 4 is provided with a positioning groove 10. The oblique teeth at the bottom of the locking tooth 11 and the oblique teeth of the positioning groove 10 interlock with each other. The oblique surface of the teeth is inclined towards the catheter 3, and the bottom tip of the teeth faces away from the catheter 3, so that the locking tooth 11 can only move in one direction towards the tank wall membrane 41 and achieves reverse limiting. When the locking tooth 11 is pushed toward the diaphragm 41 of the groove wall, the locking tooth 11 will slide upward away from the locking groove 10. When the locking tooth 11 loses its thrust, it will be locked in the corresponding locking groove 10, so that the locking tooth 11 maintains its current state and prevents the locking tooth 11 from resetting backward.

[0030] The tube body 1 has soft rubber covers 6 on both sides corresponding to the paddle 7. The middle section of the paddle 7 is arc-shaped, and the lower middle section of the arc corresponds to the soft rubber cover 6. The soft rubber cover 6 is integrally formed with the notch of the tube body 1 by a two-stage injection molding process. The middle of the soft rubber cover 6 protrudes.

[0031] The upper and lower surfaces of the water storage tank 4 are covered with a sealing film 12. The sealing film 12 is used to seal the edge gaps of the water storage tank 4.

[0032] The water reservoir wall near the catheter 3, i.e., the membrane 41 of the reservoir wall, has been thinned to make it easier for the pick 7 to puncture.

[0033] As shown in Figures 2 and 3, the connector 2 includes, from top to bottom, a connector port 23, a connector body 21, and an extension pipe section 22. The connector body 21 is used to fix it to the pipe body 1 and can be integrated with the pipe body 1 by secondary injection molding.

[0034] A return trough 5 is formed between the extension pipe section 22 and the membrane 41 of the trough wall. The extension pipe section 22 has been lengthened, and both ends of the outer side of the pipe body 1 are concave inward to form an umbrella-shaped cap 28. The umbrella-shaped cap 28 has a shape that is high in the middle and low on both sides. This can greatly increase the internal area of ​​the return trough 5.

[0035] The connector port 23 is used to cover the cap 26.

[0036] The extension tube 22 is equipped with a septum membrane 13 that is in close contact with the catheter 3. The septum membrane 13 is made of soft material and has a cross-shaped opening in the middle, through which the catheter 3 can be inserted, while preventing the solution 14 from flowing out of the packaging along the connector 2.

[0037] The outer ring of the connector port 23 is provided with a wavy corrugated groove 24, and the bottom of the cover 26 is provided with a corrugated groove 27 that matches the first corrugated groove 24. The cover 26 and the connector port 23 are rigidly engaged, which can achieve good sealing and prevent the cover 26 from falling off. Considering that there will be some resistance when opening, the outer edge of the cover adopts a "sin" skirt design that is larger at the bottom and smaller at the top, and an additional vertical anti-slip design is added. When opening, the cover 26 can be rotated, and the wavy path of the first corrugated groove 24 and the second groove 27 reduces the difficulty of opening without affecting the use effect.

[0038] The outer rim of the cap 26 is also provided with anti-slip corrugations 29 above the corrugated groove 27. There is a certain gap between the anti-slip corrugations 29 and the corrugated groove 27 to accommodate fingers. The anti-slip corrugations 29 serve as the force point for rotating the cap 26, assisting in unscrewing the cap 26.

[0039] Working principle: As shown in Figure 6, when using the catheter 3, the operator can press the soft rubber cover 6 with two fingers. The lower part of the lever 7 will be subjected to a squeezing force. Since the upper part of the lever 7 is fixed, the lower part will deform inward. The bottom of the lever 7 will press against the diaphragm 41 of the groove wall and break through the diaphragm 41. When the diaphragm 41 deforms outward until it touches the extension tube section 22 of the connector 2, it will stop deforming outward. The locking teeth 11 at the bottom of the lever 7 will lock and limit the movement because they cooperate with the sawtooth-shaped positioning groove 10 at the bottom of the water tank 4. Moreover, the diaphragm 41 of the groove wall will always be in an "open" state under the support of the lever 7. The solution 14 flows down the tube wall and wets the catheter 3.

[0040] Once the prescribed soaking time has elapsed, hold the tube body 1 with one hand and the cap 26 at the ridged end with the other. Due to the wavy stepped design at the cap 26 and the connector tube opening 23, the cap 26 can be easily pushed upwards. After the cap 26 is opened, the catheter 3 can be withdrawn. Because of the septum 13, any excess adhesive solution 14 on the catheter 3 will be drained into the tube.

[0041] Due to different operators, the orientation of the catheter 1 is not fixed when or after removing the catheter 3; it may be upright, horizontal, or even with the cap 26 facing downwards. As shown in Figure 7, when the packaging is completely inverted, most of the solution 14 at the bottom will enter the return tank 5, and some will enter the water storage tank 4 through the opening of the membrane 41 in the tank wall. The liquid level of solution 14 will then be far below the outlet of the extension tube section 22. Even with shaking, it is unlikely to overflow. Alternatively, the catheter 3 can be placed or removed from the side, as shown in Figure 8. Due to the "opening" design of the membrane 41 in the tank wall, solution 14 will also enter the water storage tank 4 through the opening, and some will also enter the return tank 5. This truly achieves "dry and wet separation" of the catheter 3.

[0042] 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. A hydrophilic coated urinary catheter packaging that prevents liquid carry-out and is resistant to compression wetting, for loading a urinary catheter (3), characterized in that: The hydrophilic coated catheter package includes a tube body (1), a connector (2), and two levers (7). The center of the tube body (1) is a cavity for accommodating the catheter (3). Water storage tanks (4) are provided on both sides of the cavity. The water storage tanks (4) are used to store solutions (14). The side of the water storage tank (4) adjacent to the cavity is a thin film (41) wall. The top of the water storage tank (4) is provided with a structure for fixing the levers (7). The bottom of the levers (7) is provided with a structure that can pierce the thin film (41) wall. The two sides of the tube body (1) are provided with a structure for fixing the levers. (7) Corresponding soft rubber cover (6); the top of the water tank (4) is provided with a straight groove (8), and the top of the paddle (7) is provided with a straight block (9) that can be inserted into the straight groove (8); the bottom of the paddle (7) is provided with a straight tooth (11), and the end of the tooth (11) corresponding to the membrane (41) of the tank wall is spike-shaped. The bottom of the water tank (4) is provided with a positioning groove (10), and the oblique teeth at the bottom of the tooth (11) and the oblique teeth of the positioning groove (10) mesh with each other, and the oblique surface of the tooth is inclined towards the catheter (3).

2. The hydrophilic coated urinary catheter packaging with anti-liquid carryover and compression-impregnation properties according to claim 1, characterized in that: The tube body (1) is made up of two identical front and rear parts that are fastened together.

3. The hydrophilic coated urinary catheter packaging with anti-liquid carryover and compression-wetting properties according to claim 1, characterized in that: The water storage tank (4) is covered with a sealing film (12) on both the upper and lower surfaces.

4. The hydrophilic coated urinary catheter packaging with anti-liquid carryover and compression-impregnation properties according to claim 1, characterized in that: The connector (2) includes a connector port (23), a connector body (21), and an extension pipe section (22) arranged sequentially from top to bottom. The connector body (21) is used to fix the pipe body (1). The extension pipe section (22) forms a return groove (5) between itself and the trough wall film (41). The connector port (23) is used to cover the cap (26).

5. The hydrophilic coated urinary catheter packaging with anti-liquid carryover and compression-wetting properties according to claim 4, characterized in that: The extension tube section (22) is provided with a septum membrane (13) that is in close contact with the catheter (3).

6. The hydrophilic coated urinary catheter packaging with anti-liquid carryover and compression-impregnation properties according to claim 4, characterized in that: The bottom of the connector body (21) is provided with an umbrella-shaped cap (28) located outside the extension pipe section (22).

7. The hydrophilic coated urinary catheter packaging with anti-liquid carryover and compression-wetting properties according to claim 4, characterized in that: The outer ring of the connector port (23) is provided with a wave-shaped corrugated groove one (24), and the bottom of the cover (26) is provided with a corrugated groove two (27) that matches the corrugated groove one (24).

8. The hydrophilic coated urinary catheter packaging with anti-liquid carryover and compression-impregnation properties according to claim 1, characterized in that: The soft rubber shell (6) is integrated with the tube body (1) at the notch by a secondary injection molding process.