Disposable urinary catheter drainage device

Abstract

This utility model belongs to the field of medical device technology and provides a disposable urinary catheter drainage device, including a urinary catheter, a sealing connector, and a reservoir bag connected in sequence. The reservoir bag is a folded reservoir bag with at least one pre-compression fold line. The reservoir bag is provided with a drainage tube communicating with an internal reservoir cavity. The sealing connector includes an insert at the end of the urinary catheter and a sleeve at the end of the drainage tube. The insert is detachably inserted into the sleeve. The disposable urinary catheter drainage device provided by this utility model improves portability and reduces the impact on patient activity by using a folded reservoir bag, increases urine storage capacity, and allows for detachable connection between the reservoir bag and the urinary catheter through the sealing connector, facilitating the replacement of the reservoir bag and avoiding urethral mucosal infection damage caused by repeated insertion and removal of the catheter.

Description

Technical Field

[0001] This utility model belongs to the field of medical device technology, and specifically relates to a disposable urinary catheterization and drainage device. Background Technology

[0002] In clinical practice, some patients require urinary catheterization, such as some stroke patients, incontinent patients, spinal cord injury patients, postoperative patients with limited mobility, and patients with obstructive urinary tract diseases. During this procedure, a catheter is inserted through the urethra into the bladder to guide urine out to a urine bag. However, existing urine bags are generally designed to be large to increase capacity, resulting in a large footprint and making them inconvenient to place in a patient's gown pocket for operation and storage. Although existing urine bags are made of soft materials such as PET, AL, or PE, they are still not easy to fold, further increasing their size and making them inconvenient to put in a pocket or carry, severely hindering the patient's activity and recovery. Furthermore, some urine bags use an integrated catheter structure, which makes it difficult to flexibly control the timing of catheterization, and requires repeated insertion and removal of the catheter after urine collection, which can easily cause urethral mucosal damage or even infection. In addition, existing urinary catheters are generally simple tube structures. If there is urine in the bladder during the insertion process, urine will flow out from the catheter's interface, causing urine spillage and contamination. It is also impossible to effectively control the opening and closing of the catheter and the timing of catheterization.

[0003] Therefore, it is necessary to design a disposable urinary catheterization device that can at least solve some of the above problems and defects. Summary of the Invention

[0004] To address the above-mentioned technical problems, this invention proposes a disposable urinary catheterization and drainage device. By incorporating a foldable storage bag, it improves portability, reduces the impact on patient activity, and increases urine storage capacity. Simultaneously, a tight-fitting connector enables detachable connection between the storage bag and the catheter, facilitating bag replacement and avoiding urethral mucosal infection and damage caused by repeated catheter insertion and removal.

[0005] The technical solution of this utility model is:

[0006] This utility model proposes a disposable urinary catheterization and drainage device, which includes a urinary catheter, a sealing member, and a fluid storage bag connected in sequence. The fluid storage bag is a folded fluid storage bag with at least one pre-compression fold line.

[0007] The fluid storage bag is provided with a drainage tube that communicates with the internal fluid storage chamber. The sealing member includes an insert at the end of the catheter and a sleeve at the end of the drainage tube. The insert is detachably inserted into the sleeve.

[0008] Preferably, the connector includes a seat section connected to the catheter, an insertion section connected to the seat section, and a first anti-backflow duckbill valve, wherein the first anti-backflow duckbill valve is disposed in the inner cavity of the insertion section;

[0009] The fitting includes a transition section connected to the drainage tube, an outer tube section connected to the transition section, and an inner tube section. The inner diameter of the outer tube section is adapted to the outer diameter of the insertion tube section, and the outer diameter of the inner tube section is adapted to the inner diameter of the insertion tube section.

[0010] Preferably, the inner wall of the outer tube is provided with an internal thread, and the outer wall of the insertion tube is provided with an external thread;

[0011] The outer wall of the outer tube and / or the outer wall of the seat tube are provided with anti-slip texture.

[0012] Preferably, the outer wall of the outer tube is provided with elastic clamping members that are symmetrical about its axial center;

[0013] The elastic clamping member includes a pressing part and a clamping part connected together. The clamping part is provided with an inwardly protruding protrusion. The minimum distance between the protrusions of the two elastic clamping members is less than the outer diameter of the insertion tube.

[0014] Preferably, the sealing member further includes a sealing ring gasket disposed between the outer tube portion and the inner tube portion, the sealing ring gasket abutting against the end of the insertion tube portion.

[0015] Preferably, the catheter is provided with an access switch at one end near the insertion member. The access switch includes a first connector and a second connector that are movably connected, and the first connector is located near the insertion member.

[0016] The first connector is provided with a main passage cavity that communicates with the inner lumen of the urinary catheter. The second connector is movably inserted into the main passage cavity. The second connector is provided with a secondary passage cavity that communicates with the inner lumen of the urinary catheter. The first connector is also provided with a sealing head that is adapted to the inner lumen of the urinary catheter, so as to control whether the secondary passage cavity is connected to the inner lumen of the urinary catheter through the sealing head.

[0017] Preferably, the liquid storage bag is a transparent bag with capacity graduation lines;

[0018] The liquid storage bag has a pre-cut tear on one side near its bottom, and a guide arrow is provided at the pre-cut tear.

[0019] Preferably, a second anti-backflow duckbill valve is provided at one end of the drainage tube that extends into the liquid storage chamber inside the liquid storage bag.

[0020] Preferably, the urinary catheter and / or the drainage tube are provided with a fixing strap connected thereto to secure them to the leg area.

[0021] This utility model has the following advantages and effects compared with the prior art:

[0022] (1) Use foldable storage bags with at least one pre-compression fold line to reduce the space occupied by the storage bags and make them easy to carry, such as placing them in the pocket of the patient's gown, thereby improving the convenience of use and carrying and reducing the obstruction and impact on the patient's activities.

[0023] (2) A tight connector including a plug and a socket is used to achieve a detachable connection between the reservoir bag and the catheter, which makes it easy to replace the reservoir bag as needed and avoid repeated insertion and removal of the catheter, thereby avoiding damage and infection to the urethral mucosa.

[0024] (3) The connector with an internal anti-backflow duckbill valve can prevent the outflowing urine from flowing back into the bladder and causing infection, thus improving the safety of use and improving the tightness of the connection to prevent urine from overflowing. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the disposable urinary catheterization and drainage device in Embodiment 1 of this utility model;

[0026] Figure 2 This is a schematic diagram of the structure of the fluid storage bag in the disposable urinary catheterization and drainage device in Embodiment 1 of this utility model;

[0027] Figure 3 for Figure 1 Enlarged structural diagram at position A in the middle;

[0028] Figure 4 This is a schematic diagram of the internal structure of the sealing member in the disposable urinary catheterization and drainage device of Embodiment 1 of this utility model;

[0029] Figure 5 for Figure 1 A magnified structural diagram at position B in the middle;

[0030] Figure 6 This is a schematic diagram of the internal structure of the circuit switch in the disposable urinary catheterization and drainage device of Embodiment 1 of this utility model.

[0031] Figure 7 This is a partial structural schematic diagram of the disposable urinary catheterization and drainage device in Embodiment 2 of this utility model;

[0032] Figure 8 for Figure 7 Enlarged structural diagram at position C in the middle;

[0033] Figure 9 This is a partial structural schematic diagram of the disposable urinary catheterization and drainage device in Embodiment 3 of this utility model.

[0034] Reference numerals: 1. Catheter; 11. First connector; 111. Main access cavity; 112. Sealing head; 12. Second connector; 121. Secondary access cavity; 2. Storage bag; 21. Pre-cut tear opening; 3. Drainage tube; 31. Second anti-backflow duckbill valve; 4. Insertion piece; 41. Seat tube section; 42. Insertion tube section; 43. First anti-backflow duckbill valve; 5. Sleeve piece; 51. Transition section; 52. Outer tube section; 53. Inner tube section; 6. Anti-slip texture; 7. Elastic clamp; 71. Pressing part; 72. Clamping part; 73. Protrusion; 8. Sealing ring gasket; 9. Fixing strap. Detailed Implementation

[0035] To enable those skilled in the art to better understand this utility model, it will now be further described in conjunction with specific embodiments. It should be understood that the specific embodiments described herein are for illustrative and explanatory purposes only and are not intended to limit the scope of this utility model.

[0036] Example 1:

[0037] like Figures 1-6 As shown, this utility model provides a disposable urinary catheterization and drainage device, including a urinary catheter 1, a sealing member, and a fluid collection bag 2 connected in sequence. The fluid collection bag 2 is a folded fluid collection bag 2 with at least one pre-compression fold line; specifically, in conjunction with Figure 1 and Figure 2 As shown, the fluid storage bag 2 in this embodiment is provided with two pre-compression folding lines so that the fluid storage bag 2 is a three-section structure that can be folded twice, which effectively reduces the space occupied by the fluid storage bag 2. During use, the fluid storage bag 2 can be folded and placed in the pocket of the patient's gown for easy carrying and reduces the impact on the patient's activities.

[0038] refer to Figure 2 As shown, the storage bag 2 is a transparent bag with capacity markings. It can be made of double-layer co-extruded PE film to ensure a burst strength greater than 35 kPa, improving safety. A pre-cut tear slit 21 is provided on one side near the bottom of the storage bag 2, and a guide arrow is provided at the pre-cut tear slit 21. The storage bag 2 is equipped with a drainage tube 3 connected to the internal storage chamber. A second anti-backflow duckbill valve 31 is provided at the end of the drainage tube 3 that extends into the internal storage chamber of the storage bag 2 to prevent urine flowing into the storage bag 2 from flowing back into the drainage tube 3, causing leakage or contamination.

[0039] The sealing components include a connector 4 located at the end of the urinary catheter 1 and a sleeve 5 located at the end of the drainage tube 3. The connector 4 is detachably inserted into the sleeve 5 to achieve a detachable connection between the reservoir bag 2 and the urinary catheter 1.

[0040] Specifically, in combination Figure 3 and Figure 4 As shown, the connector 4 includes a seat tube 41 connected to the catheter 1, an insertion tube 42 connected to the seat tube 41, and a first anti-backflow duckbill valve 43. The first anti-backflow duckbill valve 43 is disposed in the inner cavity of the insertion tube 42. The outer diameter of the seat tube 41 is larger than the outer diameter of the catheter 1, the outer diameter of the insertion tube 42 is larger than the outer diameter of the seat tube 41, and the inner diameter of the insertion tube 42 is larger than the inner diameters of the seat tube 41 and the catheter 1, so as to accommodate the first anti-backflow duckbill valve 43, thereby allowing urine to flow in one direction and not backflow into the patient's bladder. It should be noted that the anti-backflow duckbill valve is a mature existing technology, and its specific structure and principle will not be described here.

[0041] The socket 5 includes a transition portion 51 connected to the drainage tube 3, an outer tube portion 52 connected to the transition portion 51, and an inner tube portion 53. The inner and outer diameters of the outer tube portion 52 are both larger than the inner and outer diameters of the drainage tube 3. The transition portion 51 has a tapered tube structure connecting the drainage tube 3, the outer tube portion 52, and the inner tube portion 53. The inner tube portion 53 and the outer tube portion 52 form a nested ring structure. The inner diameter of the outer tube portion 52 is adapted to the outer diameter of the insertion tube portion 42, and the outer diameter of the inner tube portion 53 is adapted to the inner diameter of the insertion tube portion 42, so that the insertion tube portion 42 is inserted into the spacer area formed by the outer tube portion 52 and the inner tube portion 53. For details, please refer to [reference needed]. Figure 4 As shown.

[0042] Furthermore, the inner wall of the outer tube 52 is provided with an internal thread, the outer wall of the insertion tube 42 is provided with an external thread, and the outer wall of the outer tube 52 and the outer wall of the seat tube 41 are provided with anti-slip textures 6, so as to facilitate the threaded connection of the insertion piece 4 and the sleeve piece 5 by gripping the anti-slip textures 6.

[0043] Furthermore, the sealing component also includes a sealing ring gasket 8 disposed between the outer tube portion 52 and the inner tube portion 53. After the plug-in component 4 and the sleeve component 5 are fully tightened, the sealing ring gasket 8 abuts against the end of the plug-in portion 42 to achieve a sealed connection. Specifically, the sealing ring gasket 8 can be a silicone sealing ring with a Shore hardness of 40A.

[0044] like Figure 5 and Figure 6 As shown, further, a flow switch is provided at one end of the urinary catheter 1 near the connector 4. The flow switch includes a first connector 11 and a second connector 12 that are movably connected. The first connector 11 is located near the connector 4 and is movably connected to the outer periphery of the second connector 12 to realize the connection and disconnection of the urinary catheter 1, so as to avoid the uncontrollable outflow of a large amount of urine.

[0045] refer to Figure 6As shown, the first connector 11 is provided with a main passage cavity 111 that communicates with the inner lumen of the catheter 1. The main passage cavity 111 is located on the outer periphery of the catheter 1. The second connector 12 is movably inserted into the main passage cavity 111. The second connector 12 is provided with a secondary passage cavity 121 that communicates with the inner lumen of the catheter 1. The secondary passage cavity 121 is located on the outer periphery of the catheter 1. The first connector 11 is also provided with a sealing head 112 that is adapted to the inner lumen of the catheter 1, so as to control whether the secondary passage cavity 121 is connected to the inner lumen of the catheter 1. Specifically, when the first connector 11 and the second connector 12 are pushed to bring them close together, the sealing head 112 extends into the inner cavity of the catheter 1 at the second connector 12 and seals the connecting slot on the inner wall of the second connector 12, so that the secondary passage cavity 121 and the inner cavity of the insertion end of the catheter 1 are in a blocked and isolated state. At this time, the catheter 1 is in a closed state and no urine will flow out from the port of the connector 4. When the first connector 11 and the second connector 12 are pulled away from each other, the sealing head 112 disengages from the sealing of the connecting slot on the inner wall of the second connector 12, and the urine flows through the inner cavity of the catheter 1 into the secondary passage cavity 121 and the main passage cavity 111, and finally flows through the connecting slot on the inner wall of the first connector 11 into the inner cavity of the catheter 1 on the other side (the side closer to the connector 4). At this time, the catheter 1 is in a passable state.

[0046] Optionally, in some embodiments, the insertion tube 42, the seat tube 41, and the urinary catheter 1 are connected in an integral structure, and the transition section 51, the outer tube 52, the inner tube 53, and the drainage tube 3 are connected in an integral structure.

[0047] Example 2:

[0048] In embodiment 2 of this utility model, using Figure 7 and Figure 8 The following description will be provided. Furthermore, descriptions of parts that are no different from those in Embodiment 1 will be omitted, and the same reference numerals will be used instead.

[0049] like Figure 7 and Figure 8 As shown, the disposable urinary catheterization and drainage device of this utility model has an elastic clamping member 7 symmetrical about its axis center on the outer wall of the outer tube 52. Specifically, the elastic clamping member 7 includes a pressing part 71 and a clamping part 72 connected to each other. The clamping part 72 is provided with an inwardly protruding protrusion 73. The minimum distance between the protrusions 73 on both sides of the elastic clamping member 7 is less than the outer diameter of the insertion tube 42.

[0050] refer to Figure 8As shown, during the connection process between the socket 5 and the insert 4, the protrusion 73 of the clamping part 72 abuts against the outer wall of the insertion tube part 42 and extends outward until the insertion tube part 42 of the insert 4 is completely inserted into the socket 5. At this time, the protrusion 73 moves to the bottom of the insertion tube part 42 (the connection position between the insertion tube part 42 and the seat tube part 41). Under the elastic action of the clamping part 72 itself, the protrusion 73 extends inward, so that the protrusion 73 abuts against the bottom wall of the insertion tube part 42, thereby playing a locking and clamping role. When it is necessary to replace the liquid storage bag 2, simply press the pressing part 71 of the elastic clamping parts 7 on both sides manually, which can drive the protrusion 73 of the clamping part 72 to disengage from the bottom wall of the insertion tube part 42, so as to realize the disassembly and separation of the insert 4 and the socket 5.

[0051] It should be noted that, in order to ensure the sealing and stability of the connection, the elastic clips 7 on both sides are made of ABS plastic elastic parts with an opening and closing force of 2-3N. During the opening process, two fingers need to be pressed simultaneously to unlock, which effectively avoids separation caused by accidental contact and plays a role in preventing accidental contact.

[0052] Example 3:

[0053] In embodiment 3 of this utility model, using Figure 9 The following description will be provided. Furthermore, descriptions of parts that are no different from those in Embodiment 2 will be omitted, and the same reference numerals will be used instead.

[0054] like Figure 9 As shown, the disposable urinary catheter drainage device of this utility model includes a urinary catheter 1 with a fixing strap 9 connected thereto, which is used to secure it to the leg area, improving overall stability and preventing accidental dislodgement of the urinary catheter 1, thus avoiding the need for re-insertion of the urinary catheter 1. Specifically, the fixing strap 9 can be made of elastic spandex material, and the two ends of the fixing strap 9 can be connected by Velcro.

[0055] Optionally, in some embodiments, the drainage tube 3 is also provided with a fixing strap 9 connected thereto, so as to fix the drainage tube 3 and avoid accidental contact and pulling caused by messy pipelines.

[0056] In summary, the disposable urinary catheterization device provided by this utility model improves portability and reduces the impact on patient activities by setting up a foldable storage bag, and increases the urine storage capacity. At the same time, the storage bag and the urinary catheter are detachably connected by a tight connector, which facilitates the replacement of the storage bag and avoids urethral mucosal infection and damage caused by repeated insertion and removal of the catheter.

[0057] The above are merely preferred embodiments of the present utility model and do not limit the patent scope of the present utility model. All equivalent changes and modifications made within the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A disposable urinary drainage device, characterized by: It includes a urinary catheter (1), a sealing member, and a reservoir bag (2) connected in sequence. The reservoir bag (2) is a folded reservoir bag (2) with at least one pre-compression fold line. The storage bag (2) is provided with a drainage tube (3) that communicates with the internal storage chamber. The sealing member includes a connector (4) at the end of the catheter (1) and a sleeve (5) at the end of the drainage tube (3). The connector (4) is detachably inserted into the sleeve (5).

2. The disposable urinary drainage device according to claim 1, wherein: The insertion device (4) includes a seat tube (41) connected to the catheter (1), an insertion tube (42) connected to the seat tube (41), and a first anti-backflow duckbill valve (43), wherein the first anti-backflow duckbill valve (43) is disposed in the inner cavity of the insertion tube (42); The socket (5) includes a transition part (51) connected to the drainage tube (3), an outer tube part (52) connected to the transition part (51), and an inner tube part (53). The inner diameter of the outer tube part (52) is adapted to the outer diameter of the insertion tube part (42), and the outer diameter of the inner tube part (53) is adapted to the inner diameter of the insertion tube part (42).

3. The disposable urinary catheterization and drainage device according to claim 2, characterized in that: The inner wall of the outer tube (52) is provided with an internal thread, and the outer wall of the insertion tube (42) is provided with an external thread; The outer wall of the outer tube (52) and / or the outer wall of the seat tube (41) are provided with anti-slip texture (6).

4. The disposable urinary drainage device according to claim 2, wherein: The outer wall of the outer tube (52) is provided with elastic clamps (7) that are symmetrical about its axis center; The elastic clip (7) includes a pressing part (71) and a clamping part (72) connected to each other. The clamping part (72) is provided with an inwardly protruding protrusion (73). The minimum distance between the protrusions (73) of the two elastic clips (7) is less than the outer diameter of the insertion part (42).

5. The disposable urinary drainage device according to claim 3 or 4, characterized in that: The sealing member also includes a sealing ring gasket (8) disposed between the outer tube portion (52) and the inner tube portion (53), the sealing ring gasket (8) abutting against the end of the insertion tube portion (42).

6. The disposable urinary drainage device according to claim 1, wherein: The catheter (1) has an access switch at one end near the connector (4). The access switch includes a first connector (11) and a second connector (12) that are movably connected. The first connector (11) is located near the connector (4). The first connector (11) is provided with a main access cavity (111) that communicates with the inner lumen of the catheter (1). The second connector (12) is movably inserted into the main access cavity (111). The second connector (12) is provided with a secondary access cavity (121) that communicates with the inner lumen of the catheter (1). The first connector (11) is also provided with a sealing head (112) that is adapted to the inner lumen of the catheter (1) so as to control whether the secondary access cavity (121) is connected to the inner lumen of the catheter (1) through the sealing head (112).

7. The disposable urinary drainage device according to claim 1, wherein: The liquid storage bag (2) is a transparent bag with capacity graduation lines; The liquid storage bag (2) has a pre-cut tear (21) on one side near its bottom, and a guide arrow is provided at the pre-cut tear (21).

8. The disposable urinary drainage device according to claim 1, wherein: A second anti-backflow duckbill valve (31) is provided at one end of the drainage tube (3) that extends into the internal storage chamber of the storage bag (2).

9. The disposable urinary drainage device according to claim 1, wherein: The catheter (1) and / or the drainage tube (3) are provided with a fixing band (9) connected thereto to be fixed and tied in the leg area.

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