Disposable urinary catheterization bag for bladder irrigation

Abstract

The utility model discloses a disposable urinary catheterization bag for bladder irrigation, and relates to the technical field of medical supplies. The urinary catheterization bag comprises a sterile packaging bag, wherein a urinary catheterization bag main body and a plurality of auxiliary tools are arranged in the sterile packaging bag; the urethral catheterization bag body comprises a drainage bag and a catheter, a one-way valve assembly is arranged between the drainage bag and the catheter, and the one-way valve assembly is composed of a first installation part, a second installation part, a rotating shell, a sealing valve element and a plurality of elastic pieces. According to the urethral catheterization bag, due to the fact that the one-way valve assembly is arranged, one-way conveying of liquid is achieved, and the liquid in the drainage bag is effectively prevented from flowing back; the one-way valve assembly is simple in structure, easy to manufacture and assemble and low in cost; the sealing valve core is continuously pressed by a plurality of elastic pieces, so that a good sealing effect can be ensured; the flow dividing pipe and the rubber plug are arranged, medicine injection can be facilitated, the limiting state of the sealing valve element can be adjusted by rotating the rotating shell, and stable medicine injection is facilitated.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical supplies, in particular to a disposable bladder instillation catheterization bag. Background Art

[0002] In the field of medical care, the urinary catheterization bag is one of the commonly used medical devices, which is mainly used to help patients drain urine to relieve bladder pressure and avoid complications caused by urine retention. Traditional urinary catheterization bags usually include drainage bags and catheters, but in practical applications, there are still some problems:

[0003] During the drainage process of some catheterization bags, the liquid in the drainage bag can easily flow back into the catheter, increasing the risk of infection for patients. In addition, when using some catheterization bags to infuse drugs, it is impossible to effectively prevent drug leakage, affecting the treatment effect. Utility Model Content

[0004] The utility model aims to provide a disposable bladder infusion catheterization bag. In the utility model, the catheterization bag realizes one-way delivery of liquid by arranging a one-way valve assembly, and effectively prevents the backflow of liquid in the drainage bag; the one-way valve assembly has a simple structure, is easy to manufacture and assemble, and has low cost; the sealing valve core is continuously pressurized by a plurality of elastic parts, which can ensure a good sealing effect; the equipped shunt tube and rubber plug can facilitate the injection of medicine, and the limit state of the sealing valve core can be adjusted by rotating the rotating shell, which is convenient for the stable infusion of medicine, and solves the existing technical problems.

[0005] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0006] Disposable bladder instillation catheterization kit, including:

[0007] A sterile packaging bag, wherein the sterile packaging bag includes a urinary catheterization bag body and a plurality of auxiliary tools;

[0008] The main body of the urinary catheterization bag includes a drainage bag and a catheter tube, a one-way valve assembly is arranged between the drainage bag and the catheter tube, the one-way valve assembly is composed of a first mounting part, a second mounting part, a rotating shell, a sealing valve core and a plurality of elastic parts, the first mounting part and the second mounting part are combined with each other to form a connecting piece, one end of the connecting piece is connected to one end of the catheter tube, and the other end of the connecting piece is fixedly connected to the top of the drainage bag, the sealing valve core is located in the connecting piece, and is used to block the liquid outlet of the catheter tube, the plurality of elastic parts are used to continuously apply a force to the sealing valve core to abut the catheter tube, and the rotating shell is arranged outside the connecting piece, and is used to limit the movement of the sealing valve core.

[0009] Optionally, the first mounting portion is composed of a first disc and a first cylindrical shell, the first cylindrical shell is fixedly mounted on the bottom of the first disc, one end of the catheter is fixedly passed through the first disc and is communicated with the interior of the first cylindrical shell; the second mounting portion is composed of a second disc and a second cylindrical shell, the second cylindrical shell is fixedly mounted on the top of the second disc, a water hole is provided at the bottom of the second disc, the second disc is fixedly connected to the top of the drainage bag, and the interior of the drainage bag is communicated with the interior of the second cylindrical shell through the water hole; the second cylindrical shell is sleeved on the outer wall of the first cylindrical shell, two positioning protrusions are fixedly mounted on the outer wall of the first cylindrical shell, and two positioning holes are provided on the outer wall of the second cylindrical shell, both of which are engaged with corresponding positioning protrusions to complete the installation and fixation of the first mounting portion and the second mounting portion; the outer wall of the first cylindrical shell is sleeved with a second sealing ring, the second sealing ring is located near the bottom end of the first cylindrical shell, and the second sealing ring cooperates with the inner wall of the second cylindrical shell.

[0010] Optionally, the outer wall of the sealing valve core is provided with a plurality of through grooves, and the horizontal position of the plurality of through grooves from the center point of the sealing valve core is greater than the diameter of the liquid guide tube to ensure that the top end of the sealing valve core can abut and seal one end of the liquid guide tube, and the outer wall of the sealing valve core is fixedly installed with a plurality of limit rods, and the plurality of limit rods and the plurality of through grooves are staggered with each other; the outer wall of the first cylindrical shell is provided with a plurality of first limit grooves, and the outer wall of the second cylindrical shell is provided with a plurality of second limit grooves, and the plurality of first limit grooves all correspond to the plurality of second limit grooves, and one end of the plurality of limit rods all penetrates the corresponding first limit grooves and the second limit grooves and extends to the outside of the second cylindrical shell.

[0011] Optionally, the rotating shell is rotatably sleeved on the outer wall of the second cylindrical shell, the outer wall of the second cylindrical shell is sleeved with a third sealing ring, the third sealing ring cooperates with the inner wall of the rotating shell near the bottom end, the first disc is rotatably cooperated with the inner wall of the rotating shell, the outer wall of the first disc is sleeved with a first sealing ring, and the first sealing ring cooperates with the inner wall of the rotating shell; a cavity is formed between the inner wall of the rotating shell and the outer wall of the second cylindrical shell, and the plurality of elastic members are all located in the cavity, and the plurality of elastic members include a plurality of arc-shaped fixing blocks, and the plurality of arc-shaped fixing blocks are evenly arranged and fixedly connected to the inner wall of the rotating shell, and the tops of the plurality of arc-shaped fixing blocks are fixedly installed with arc-shaped elastic sheets, and one end of the plurality of arc-shaped elastic sheets extends to the outside of the corresponding arc-shaped fixing blocks to form corresponding suspended parts, and the tops of the suspended parts of the plurality of arc-shaped fixing blocks cooperate with adjacent limit rods to continuously apply upward force to the sealing valve core.

[0012] Optionally, a plurality of the arc-shaped fixed blocks are provided with a clearance groove on one side away from the suspended portion of the corresponding arc-shaped elastic sheet, and a plurality of the second cylindrical shells are fixedly installed with a limit block on the outer wall, and a plurality of the limit blocks are matched with the inner wall of the corresponding clearance groove to limit the rotation of the rotating shell.

[0013] Optionally, the outer wall of the first cylindrical shell is provided with a plurality of first connecting holes, and the outer wall of the second cylindrical shell is provided with a plurality of second connecting holes, the plurality of first connecting holes correspond to the plurality of second connecting holes, and the plurality of first connecting holes and the plurality of second connecting holes are both located near the bottom of the external cavity of the second cylindrical shell, so as to ensure that water in the cavity can be discharged.

[0014] Optionally, the outer wall of the catheter is fixedly connected to a shunt tube, and a rubber plug is fixedly installed at one end of the shunt tube. The rubber plug is used to seal one end of the shunt tube and facilitate the connection between the syringe and one end of the shunt tube; the outer wall of the shunt tube is fixedly sleeved with a fixed bracket, and the fixed bracket is located close to the rubber plug. The fixed bracket is used to facilitate the fixation of the needle connected to the rubber plug.

[0015] The embodiments of the present invention have the following beneficial effects:

[0016] In the utility model, the urinary catheter bag is provided with a one-way valve assembly to ensure that the catheter can transport the liquid to the drainage bag in one direction, effectively preventing the liquid in the drainage bag from flowing back to the catheter, and reducing the risk of infection for the patient;

[0017] In the utility model, the one-way valve assembly has a simple structure, and is composed of a first mounting portion, a second mounting portion, a rotating shell, a sealing valve core, and a plurality of elastic members. These components are easy to manufacture and assemble, thereby reducing the manufacturing cost.

[0018] In the utility model, the sealing valve core continuously applies abutting force to the liquid guide tube through multiple elastic parts (such as arc-shaped elastic sheets), thereby ensuring the sealing effect of the sealing valve core; at the same time, by rotating the rotating shell, the limit state of the sealing valve core can be adjusted, which is convenient for maintaining the stability of the sealing valve core when the medicine is infused;

[0019] In the utility model, the urinary catheter bag also includes a shunt tube and a rubber stopper. The user can use a syringe to puncture the rubber stopper to complete the injection of medicine into the catheter tube. By rotating and adjusting the rotating shell, it can be ensured that the sealing valve core will not be opened at this time, which is conducive to the stable injection of medicine.

[0020] The urinary catheterization bag of the present invention is packaged in a sterile packaging bag, which ensures the sterility of the product and meets the hygienic requirements of medical care; by pre-equipping a variety of auxiliary tools in the sterile packaging bag, such as: hole towels, sterile gloves, disinfected cotton balls, etc., the workload of nurses can be reduced, aseptic operation is strictly enforced, and the risk of contamination is reduced.

[0021] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0023] Figure 1 This is a schematic diagram of the three-dimensional structure of the urinary catheterization bag main body according to one embodiment of the utility model;

[0024] Figure 2 This is a schematic cross-sectional structural diagram of a one-way valve assembly according to an embodiment of the utility model;

[0025] Figure 3 This is a schematic diagram of the disassembled structure of a one-way valve assembly according to an embodiment of the utility model;

[0026] Figure 4 This is a schematic diagram of the sealing valve core structure of an embodiment of the utility model;

[0027] Figure 5 This is a schematic structural diagram of a first mounting portion of an embodiment of the utility model;

[0028] Figure 6 This is a schematic structural diagram of a second mounting portion of an embodiment of the utility model;

[0029] Figure 7 It is a schematic diagram of the structure of a rotating shell and an elastic member according to an embodiment of the present invention.

[0030] In the figure: 1. drainage bag; 2. drainage tube; 3. shunt tube; 4. first mounting part; 5. second mounting part; 6. rotating shell; 7. sealing valve core; 8. water through hole; 9. rubber plug; 10. fixing bracket; 11. through groove; 12. limiting rod; 13. first disc; 14. first cylindrical shell; 15. first sealing ring; 16. first limiting groove; 17. first connecting hole; 18. second sealing ring; 19. positioning protrusion; 20. second disc; 21. second cylindrical shell; 22. second limiting groove; 23. second connecting hole; 24. positioning hole; 25. third sealing ring; 26. limiting block; 27. arc-shaped fixing block; 28. arc-shaped elastic sheet; 29. ​​clearance groove. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] In the description of the present invention, it should be understood that the terms "opening", "upper", "middle", "length", "inside" and the like indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0033] In order to keep the following description of the embodiments of the present invention clear and concise, the present invention omits detailed descriptions of known functions and known components.

[0034] Example 1: Please refer to Figure 1-7 As shown, in this embodiment, a disposable urinary catheterization bag is provided, and its structure includes a sterile packaging bag, a urinary catheterization bag body and a plurality of auxiliary tools.

[0035] The sterile packaging bag is used to keep the catheterization bag body and auxiliary tools sterile until use.

[0036] Multiple auxiliary tools include 1 large sterile sheet, 1 hole towel, 3 No. 7 gloves, 2 disposable tweezers, 3 disposable curved plates, 2 packs of iodine-sterilized cotton balls (containing 8-10 cotton balls), and 1 pack of paraffin cotton balls.

[0037] The main body of the urinary catheterization bag is a core component, including a drainage bag 1 and a drainage tube 2. The drainage bag 1 is used to collect urine, while the drainage tube 2 is responsible for guiding urine from the patient's body to the drainage bag 1.

[0038] In this embodiment, a one-way valve assembly is provided between the drainage bag 1 and the catheter 2. The one-way valve assembly is composed of a first mounting portion 4, a second mounting portion 5, a rotating shell 6, a sealing valve core 7 and a plurality of elastic members. The first mounting portion 4 and the second mounting portion 5 are combined to form a connecting piece, one end of which is connected to one end of the catheter 2, and the other end is fixedly connected to the top of the drainage bag 1. The sealing valve core 7 is located in the connecting piece, and its main function is to block the liquid outlet of the catheter 2 to prevent urine from flowing back.

[0039] In order to achieve stable blocking of the sealing valve core 7, the present embodiment is provided with a plurality of elastic members. These elastic members continuously apply a force to the sealing valve core 7 against the liquid guiding tube 2 to ensure the sealing performance of the one-way valve. The rotating shell 6 is arranged outside the connecting member, and its main function is to limit and control the movement of the sealing valve core 7 to prevent it from moving at will in the non-operating state, and at the same time, it can also change the limit state of the sealing valve core 7.

[0040] Furthermore, in this embodiment, the first mounting portion 4 is composed of a first disc 13 and a first cylindrical shell 14, and the first cylindrical shell 14 is fixedly mounted on the bottom of the first disc 13. One end of the catheter 2 is fixedly passed through the first disc 13 and communicated with the interior of the first cylindrical shell 14. The second mounting portion 5 is composed of a second disc 20 and a second cylindrical shell 21, and the second cylindrical shell 21 is fixedly mounted on the top of the second disc 20. A water hole 8 is provided at the bottom of the second disc 20, which is fixedly connected to the top of the drainage bag 1, and the interior of the drainage bag 1 is communicated with the interior of the second cylindrical shell 21 through the water hole 8.

[0041] In order to achieve a stable connection between the first mounting portion 4 and the second mounting portion 5, in this embodiment, the second cylindrical shell 21 is sleeved on the outer wall of the first cylindrical shell 14, and two positioning protrusions 19 are fixedly installed on the outer wall of the first cylindrical shell 14, and two positioning holes 24 are opened on the outer wall of the second cylindrical shell 21. Both positioning holes 24 are engaged with the corresponding positioning protrusions 19 to complete the installation and fixation. In addition, the outer wall of the first cylindrical shell 14 is also sleeved with a second sealing ring 18, which is located near the bottom end of the first cylindrical shell 14 and cooperates with the inner wall of the second cylindrical shell 21 to enhance the sealing performance.

[0042] Furthermore, in this embodiment, the outer wall of the sealing valve core 7 is provided with a plurality of through grooves 11, and the horizontal position of these through grooves 11 from the center point of the sealing valve core 7 is greater than the diameter of the liquid guiding tube 2, so as to ensure that the top end of the sealing valve core 7 can abut and block one end of the liquid guiding tube 2. At the same time, a plurality of limiting rods 12 are fixedly installed on the outer wall of the sealing valve core 7, and are staggered with the plurality of through grooves 11. A plurality of first limiting grooves 16 are provided on the outer wall of the first cylindrical shell 14, and a plurality of second limiting grooves 22 are provided on the outer wall of the second cylindrical shell 21. The plurality of first limiting grooves 16 correspond to the plurality of second limiting grooves 22, and one end of the plurality of limiting rods 12 passes through the corresponding first limiting grooves 16 and second limiting grooves 22 and extends to the outside of the second cylindrical shell 21, so as to limit the moving range of the sealing valve core 7.

[0043] Furthermore, in this embodiment, the rotating shell 6 is rotatably sleeved on the outer wall of the second cylindrical shell 21, and the outer wall of the second cylindrical shell 21 is sleeved with a third sealing ring 25, which cooperates with the inner wall of the rotating shell 6 near the bottom. The first disc 13 is rotatably matched with the inner wall of the rotating shell 6, and the outer wall of the first disc 13 is sleeved with a first sealing ring 15, which cooperates with the inner wall of the rotating shell 6. A cavity is formed between the inner wall of the rotating shell 6 and the outer wall of the second cylindrical shell 21, and a plurality of elastic members are located in the cavity.

[0044] The multiple elastic members include multiple arc-shaped fixed blocks 27, which are evenly arranged and fixedly connected to the inner wall of the rotating shell 6. An arc-shaped elastic sheet 28 is fixedly installed on the top of each arc-shaped fixed block 27, and one end extends to the outside of the corresponding arc-shaped fixed block 27 to form a suspended portion. The tops of the suspended portions of the multiple arc-shaped fixed blocks 27 are matched with the adjacent limit rods 12 to continuously apply an upward force to the sealing valve core 7.

[0045] Furthermore, in this embodiment, a plurality of arc-shaped fixed blocks 27 are provided with a clearance groove 29 on one side away from the suspended portion of the corresponding arc-shaped elastic sheet 28, and a plurality of limit blocks 26 are fixedly installed on the outer walls of the second cylindrical shells 21. The plurality of limit blocks 26 are matched with the inner walls of the corresponding clearance grooves 29 to limit the rotation of the rotating shell 6 and ensure the stable operation of the one-way valve assembly.

[0046] The present application can be used in the field of medical supplies technology, and can also be used in other fields applicable to the present application.

[0047] Example 2: Reference Figure 3 , 5 6. Improvement based on Example 1: a disposable bladder instillation catheterization bag, which is applied to the technical field of medical supplies;

[0048] Further, in this embodiment, the outer wall of the first cylindrical shell 14 is provided with a plurality of first communication holes 17, and the outer wall of the second cylindrical shell 21 is provided with a plurality of second communication holes 23. The plurality of first communication holes 17 correspond to the plurality of second communication holes 23, and are all located near the bottom of the outer cavity of the second cylindrical shell 21. These communication holes are used to ensure that the water in the cavity can be discharged, and prevent the water from accumulating in the cavity and thus affecting the performance of the one-way valve assembly.

[0049] Furthermore, in this embodiment, the outer wall of the elastic member liquid guide tube 2 is fixedly connected with a shunt tube 3, and one end of the shunt tube 3 is fixedly installed with a rubber plug 9. The rubber plug 9 is used to block one end of the shunt tube 3 and facilitate the connection of the syringe with one end of the shunt tube 3.

[0050] Further, in this embodiment, the outer wall fixed sleeve of the shunt tube 3 is provided with a fixing bracket 10, which is located near the rubber stopper 9. The fixing bracket 10 is used to facilitate fixing the needle connected to the rubber stopper 9 to ensure the stability of the injection process.

[0051] The use process and working principle of the technical solution of this utility model are as follows:

[0052] When in use, the user can take out the catheterization bag body and the tools needed to be used from the sterile packaging bag. When the catheterization bag body is in use, the one-way valve assembly is provided to ensure that the catheter tube 2 can transport the liquid to the drainage bag 1 in a one-way manner, so as to avoid the backflow of the liquid in the drainage bag 1. When the catheter tube 2 discharges the liquid discharged by the patient, due to the pressure inside the catheter tube 2, the sealing valve core 7 will retreat and squeeze the suspended parts of the multiple arc-shaped elastic sheets 28 to bend them. When a gap appears at the connection between one end of the sealing valve core 7 and the catheter tube 2, the liquid in the catheter tube 2 can enter the first cylindrical shell 14, and the liquid will be discharged to the bottom of the sealing valve core 7 through the multiple through grooves 11 provided on the outer wall of the sealing valve core 7, and finally enter the drainage bag 1 through the water hole 8. When there is no liquid to be discharged in the catheter tube 2, the multiple arc-shaped elastic sheets 28 can use their own elasticity to continuously apply an upward thrust to the sealing valve core 7, so that the top of the sealing valve core 7 can be closed. The sealing end is pressed against the connection of the catheter 2 to complete the sealing of the catheter 2; when the drainage bag 1 is squeezed, the internal liquid will flow back into the first cylindrical shell 14, but the pressure of the sealing valve core 7 close to one end of the catheter 2 does not change, so the sealing valve core 7 will continue to seal the catheter 2, and the liquid in the first cylindrical shell 14 will not flow back into the catheter 2; when the user needs to use the catheter 2 to infuse the patient with drugs, the user can rotate the rotating shell 6, and the rotating shell 6 can drive the multiple arc-shaped fixed blocks 27 to move synchronously. At this time, the multiple limiting rods 12 will slide along the arc-shaped elastic sheet 28 to the corresponding arc-shaped fixed blocks 27. At this time, the multiple arc-shaped fixed blocks 27 can complete the continuous limiting of the sealing valve core 7, which can ensure that the sealing valve core 7 will not move no matter which direction the pressure comes from; then the user can use the syringe to puncture the rubber stopper 9 to complete the injection of drugs into the catheter 2. At this time, the sealing valve core 7 will not open, which can ensure the stable injection of drugs.

[0053] It should be noted that, in the description of this specification, descriptions such as "first", "second", etc. are merely used to distinguish between various features and have no actual order or directional meaning, and this application is not limited to this.

[0054] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0055] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A disposable bladder instillation catheterization bag, characterized in that: include: A sterile packaging bag, wherein the sterile packaging bag includes a urinary catheterization bag body and a plurality of auxiliary tools; The main body of the urinary catheter bag comprises a drainage bag (1) and a drainage tube (2); a one-way valve assembly is arranged between the drainage bag (1) and the drainage tube (2); the one-way valve assembly comprises a first mounting portion (4), a second mounting portion (5), a rotating shell (6), a sealing valve core (7) and a plurality of elastic members; the first mounting portion (4) and the second mounting portion (5) are combined to form a connecting member; one end of the connecting member is connected to one end of the drainage tube (2); the other end of the connecting member is fixedly connected to the top of the drainage bag (1); the sealing valve core (7) is located in the connecting member and is used to block the liquid outlet of the drainage tube (2); the plurality of elastic members are used to continuously apply a force to the sealing valve core (7) to abut against the drainage tube (2); the rotating shell (6) is arranged outside the connecting member and is used to limit the movement of the sealing valve core (7).

2. The disposable bladder instillation catheterization bag according to claim 1, characterized in that: The first mounting portion (4) is composed of a first disk (13) and a first cylindrical shell (14); the first cylindrical shell (14) is fixedly mounted on the bottom of the first disk (13); one end of the drainage tube (2) is fixedly passed through the first disk (13) and communicated with the interior of the first cylindrical shell (14); the second mounting portion (5) is composed of a second disk (20) and a second cylindrical shell (21); the second cylindrical shell (21) is fixedly mounted on the top of the second disk (20); a water hole (8) is provided at the bottom of the second disk (20); the second disk (20) is fixedly connected to the top of the drainage bag (1); the interior of the drainage bag (1) is connected to the second cylindrical shell (21) via the water hole (8). The second cylindrical shell (21) is sleeved on the outer wall of the first cylindrical shell (14), the outer wall of the first cylindrical shell (14) is fixedly mounted with two positioning protrusions (19), the outer wall of the second cylindrical shell (21) is provided with two positioning holes (24), the two positioning holes (24) are engaged with the corresponding positioning protrusions (19), and are used to complete the installation and fixation of the first mounting part (4) and the second mounting part (5); the outer wall of the first cylindrical shell (14) is sleeved with a second sealing ring (18), the second sealing ring (18) is located near the bottom end of the first cylindrical shell (14), and the second sealing ring (18) is matched with the inner wall of the second cylindrical shell (21).

3. The disposable bladder instillation catheterization bag according to claim 2, characterized in that: The outer wall of the sealing valve core (7) is provided with a plurality of through grooves (11), and the horizontal position of the plurality of through grooves (11) from the center point of the sealing valve core (7) is greater than the diameter of the liquid guiding tube (2), so as to ensure that the top end of the sealing valve core (7) can abut and seal one end of the liquid guiding tube (2); the outer wall of the sealing valve core (7) is fixedly mounted with a plurality of limit rods (12), and the plurality of limit rods (12) and the plurality of through grooves (11) are staggered with each other; the outer wall of the first cylindrical shell (14) is provided with a plurality of first limit grooves (16), and the outer wall of the second cylindrical shell (21) is provided with a plurality of second limit grooves (22), and the plurality of first limit grooves (16) correspond to the plurality of second limit grooves (22), and one end of the plurality of limit rods (12) passes through the corresponding first limit grooves (16) and second limit grooves (22) and extends to the outside of the second cylindrical shell (21).

4. The disposable bladder instillation catheterization bag according to claim 3, characterized in that: The rotating shell (6) is rotatably sleeved on the outer wall of the second cylindrical shell (21); the outer wall of the second cylindrical shell (21) is sleeved with a third sealing ring (25); the third sealing ring (25) cooperates with the inner wall of the rotating shell (6) near the bottom end; the first disc (13) is rotatably fitted with the inner wall of the rotating shell (6); the outer wall of the first disc (13) is sleeved with a first sealing ring (15); the first sealing ring (15) cooperates with the inner wall of the rotating shell (6); a cavity is formed between the inner wall of the rotating shell (6) and the outer wall of the second cylindrical shell (21); a plurality of The elastic members are all located in the cavity, and the plurality of elastic members include a plurality of arc-shaped fixing blocks (27). The plurality of arc-shaped fixing blocks (27) are evenly arranged and fixedly connected to the inner wall of the rotating shell (6). The tops of the plurality of arc-shaped fixing blocks (27) are fixedly mounted with arc-shaped elastic sheets (28), and one end of the plurality of arc-shaped elastic sheets (28) extends to the outside of the corresponding arc-shaped fixing blocks (27) to form corresponding suspended portions. The tops of the suspended portions of the plurality of arc-shaped fixing blocks (27) are matched with adjacent limiting rods (12) to continuously apply an upward force to the sealing valve core (7).

5. The disposable bladder instillation catheterization bag according to claim 4, characterized in that: A plurality of the arc-shaped fixed blocks (27) are provided with a clearance groove (29) on one side away from the suspended portion of the corresponding arc-shaped elastic sheet (28); a plurality of the second cylindrical shells (21) are fixedly mounted with a limit block (26) on the outer wall; and a plurality of the limit blocks (26) are matched with the inner wall of the corresponding clearance groove (29) to limit the rotation of the rotating shell (6).

6. The disposable bladder instillation catheterization bag according to claim 4, characterized in that: The outer wall of the first cylindrical shell (14) is provided with a plurality of first connecting holes (17), and the outer wall of the second cylindrical shell (21) is provided with a plurality of second connecting holes (23); the plurality of first connecting holes (17) correspond to the plurality of second connecting holes (23); the plurality of first connecting holes (17) and the plurality of second connecting holes (23) are both located near the bottom of the external cavity of the second cylindrical shell (21), so as to ensure that water in the cavity can be discharged.

7. The disposable bladder instillation catheterization bag according to claim 4, characterized in that: The outer wall of the liquid guide tube (2) is fixedly connected to a shunt tube (3), one end of the shunt tube (3) is fixedly mounted with a rubber plug (9), the rubber plug (9) is used to block one end of the shunt tube (3) and facilitate the connection of a syringe with one end of the shunt tube (3); the outer wall of the shunt tube (3) is fixedly sleeved with a fixing bracket (10), the fixing bracket (10) is located near the rubber plug (9), and the fixing bracket (10) is used to facilitate the fixing of a needle connected to the rubber plug (9).

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