Push-pull type bladder irrigation device

Abstract

The push-pull type bladder irrigation device comprises a straight-barrel-shaped transparent shell, a piston assembly moving in the axial direction is arranged in the shell, the piston assembly comprises a piston body and a distribution part, the piston body comprises a piston head attached to the side wall of a mounting cavity, a first sleeve is formed at one end of the piston head, and a second sleeve is formed at the other end of the piston head. A piston handle is formed at the end, away from the piston head, of the first sleeve in the circumferential direction, the distribution part is in sliding fit with the inner wall of the first sleeve, three liquid passing pipes are formed on the inner wall of the first sleeve at intervals in the axial direction, and the three liquid passing pipes are communicated with a flushing fluid container, a purified water container and a waste liquid container through hoses from top to bottom respectively. A liquid through hole is formed in the second sleeve, and the liquid through hole is used for moving in the height direction and is communicated with the three liquid through pipes respectively. According to the bladder flushing device, the bladder of a patient can be flushed through simple steps, the device is compact in structure and convenient for a single medical worker to operate, and the working safety and efficiency are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and more specifically, to a push-pull type bladder irrigation device. Background Art

[0002] In modern medicine, bladder irrigation is a common treatment method, mainly used to remove impurities, pus, infectious substances, etc. in the bladder. However, the existing bladder irrigation devices still have many deficiencies in performance and operation, which limit their application effects in clinical practice.

[0003] First of all, the existing bladder irrigation devices usually need to be equipped with multiple valves and branches to achieve the injection and extraction of liquid into the bladder. However, in actual use, they are complicated and cumbersome. Since medical staff need to switch between multiple pipelines and master the specific operations of each valve, a slight oversight may lead to misoperations, and even cause infections or other iatrogenic injuries to patients. Especially in the emergency and high-pressure clinical environments, the operation of multiple valves is extremely prone to misoperations, increasing the risks of treatment.

[0004] Secondly, a single medical staff often feels unable to cope when operating the existing irrigation equipment. When multiple valves need to be controlled simultaneously, two people are often required to cooperate. However, in the busy medical work, there may be a shortage of manpower at any time, which limits the effectiveness of the irrigation process and further affects the rehabilitation process of patients.

[0005] In addition, the existing bladder irrigation devices often occupy a large space, causing certain inconveniences for their storage and movement, and having a relatively large operation difficulty during use.

[0006] Therefore, in view of the structure and operation mode of the existing bladder irrigation devices, there is an urgent need for a more user-friendly, simple and effective solution. Summary of the Invention

[0007] The present invention provides a push-pull type bladder irrigation device, which can overcome the defects of the existing bladder irrigation devices such as complex operation and large occupied space.

[0008] The push-pull type bladder irrigation device according to the present invention includes a straight and transparent housing. An installation cavity is formed along the axial direction of the housing. One end of the installation cavity forms an insertion port. A piston assembly that moves axially is provided in the installation cavity. The piston assembly includes a piston body and a distribution part. The piston body includes a piston head that fits against the side wall of the installation cavity. One end of the piston head forms a first sleeve. A piston handle is formed circumferentially at one end of the first sleeve away from the piston head. The distribution part is slidably fitted with the inner wall of the first sleeve. Three liquid passing tubes are formed at intervals along the axial direction on the inner wall of the first sleeve. The three liquid passing tubes are respectively connected to a flushing liquid container, a pure water container, and a waste liquid container through hoses from top to bottom. The distribution part includes a second sleeve and a distribution handle formed at one axial end of the second sleeve to block the second sleeve. One liquid passing hole is formed at the second sleeve. The liquid passing hole is used to move along the height direction and communicate with the three liquid passing tubes respectively. A communication end is formed along the axial direction at the bottom of the housing. A through hole communicating with the installation cavity is formed along the axial direction at the communication end. A swivel joint is provided at the through hole. A catheter is provided at one end of the swivel joint away from the housing. The catheter is used to be inserted into the bladder of a patient. A liquid stop clip or a ball valve is provided at one end of the catheter close to the swivel joint.

[0009] In at least one embodiment of the present invention, a connector is provided at the liquid passing tube. The connector is sequentially provided with a matching section, an installation section, and a fixing section along the axial direction. The matching section is used to cooperate with the hose. A first protrusion is formed circumferentially at the matching section. A metal clamp or a plastic clamp is sleeved on the outer wall of the hose between the first protrusion and the installation section. The installation section is in the shape of a hexagonal prism and is used to cooperate with a wrench. The fixing section is used to be threadedly fitted with the piston head. A washer is provided on one side of the fixing section close to the piston head.

[0010] In at least one embodiment of the present invention, a limiting groove is formed on the inner wall of the first sleeve, and a limiting body is correspondingly formed on the outer wall of the second housing. The limiting body is used to be correspondingly fitted with the limiting groove.

[0011] In at least one embodiment of the present invention, the limiting groove includes a first sub-groove extending axially from the upper end face of the first sleeve, and three second sub-grooves formed at intervals in the extending direction of the first sub-groove. The second sub-grooves are formed circumferentially along the second sleeve. A receiving groove is formed at one end of the second sub-groove away from the first sub-groove. The limiting body has elasticity. The maximum distance between the two axial sides of the limiting body in the non-pressed state is L1, and the maximum distance between the two axial sides of the second sub-groove is L2, and L2 < L1.

[0012] In at least one embodiment of the present invention, the limiting body includes two flexible elastic strips arranged at intervals along the axial direction. The two elastic strips are symmetrically arranged axially. First inclined surfaces are formed at both ends of the elastic strips, and second inclined surfaces are correspondingly formed at both ends of the second sub-groove.

[0013] In at least one embodiment of the present invention, a sealing ring is provided at the liquid passing hole, and the material of the sealing ring is rubber.

[0014] In at least one embodiment of the present invention, an installation groove is formed on the side wall of the piston head, a sealing rubber ring is sleeved at the installation groove, and a clamping block that is in imitation fit with the installation groove is formed on the inner wall of the sealing rubber ring.

[0015] In at least one embodiment of the present invention, the adapter successively forms an insertion section, a locking section, and a connection section along the axial direction. The adapter forms a liquid flow channel that runs through along the axial direction. The insertion section is used for threaded cooperation with the through hole. The locking section is a hexagonal column, and a retaining piece is formed at one end of the locking section close to the insertion section. The retaining piece is used for abutting and cooperating with the communication end. One end of the catheter is sleeved at the connection section. A second protrusion is formed circumferentially at the connection section. A metal clamp or a plastic clamp is provided between the outer wall of the catheter and the locking section at the second protrusion.

[0016] In at least one embodiment of the present invention, the catheter is made of semi-rigid transparent plastic, and a rounded corner is formed at one end of the catheter away from the adapter.

[0017] In at least one embodiment of the present invention, scales are formed on the outer wall of the housing along the axial direction.

[0018] Beneficial effects:

[0019] First, through the push-pull design, the bladder irrigation device provided by the present invention integrates multiple liquid channels and valve functions, reducing the complexity of multiple pipelines. The operator only needs to simply push and pull the operation distribution part to connect the liquid through hole with different liquid delivery pipes, and then the injection of the irrigation fluid, the discharge of the waste fluid, and the perfusion of pure water can be realized, greatly reducing the risk of misoperation. This simplified operation method is particularly important in emergency and high-pressure clinical environments, which can improve the work efficiency of medical staff and ensure that patients receive timely and effective treatment.

[0020] Second, the bladder irrigation device of the present invention only requires a single person to easily control the irrigation process, and no longer requires multiple people to cooperate, which solves the problem of insufficient manpower in actual work, improves the applicability and operability, and enables medical staff to quickly complete bladder irrigation in case of emergency.

[0021] Third, the transparent housing design enables medical staff to intuitively observe the state of the liquid inside the installation cavity, facilitating real-time monitoring of the irrigation effect and adjustment of operations. Therefore, it not only improves the convenience of use, but also increases the safety guarantee for patients and reduces the risk of patient infection.

[0022] Fourth, the bladder irrigation device of the present invention adopts a straight tube shape design and has no many branches, with a relatively small volume, which is convenient for storage and carrying, improving the problem that the existing irrigation equipment occupies a large space, facilitating the flexible application of medical institutions in different occasions, and enhancing the cleanliness of the overall working environment.

[0023] Fifth, by setting a liquid stop clamp or a ball valve, the flow of liquid in the bladder can be effectively controlled to prevent liquid backflow, further reducing the infection risk for patients.

[0024] Sixth, by setting scales on the outer wall of the housing, the volume of the flushing liquid or pure water injected into the bladder and the volume of the waste liquid discharged from the bladder can be accurately controlled, realizing precise operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 The front view schematic diagram of the push-pull type bladder irrigation device provided by at least one embodiment of the present invention;

[0026] Figure 2 is Figure 1 The partial enlarged schematic diagram at A in

[0027] Figure 3 The front view schematic diagram of the piston body provided by at least one embodiment of the present invention;

[0028] Figure 4 The top view schematic diagram of the piston body provided by at least one embodiment of the present invention;

[0029] Figure 5 The front view schematic diagram of the distribution part provided by at least one embodiment of the present invention;

[0030] Figure 6 The top view schematic diagram of the distribution part provided by at least one embodiment of the present invention;

[0031] Figure 7 The left view schematic diagram of the distribution part provided by at least one embodiment of the present invention;

[0032] Figure 8 The front view schematic diagram of the connector provided by at least one embodiment of the present invention;

[0033] Figure 9 is Figure 3 The sectional view taken along B-B in

[0034] Figure 10 is Figure 5 The partial enlarged schematic diagram at C in

[0035] Figure 11 is Figure 7 The partial enlarged schematic diagram at D in

[0036] Figure 12 The front view schematic diagram of the adapter provided by at least one embodiment of the present invention;

[0037] Figure 13 The installation sectional view of the piston assembly provided by at least one embodiment of the present invention;

[0038] Figure 14 Flow chart of the usage method of the push-pull type bladder irrigation device provided by at least one embodiment of the present invention. Detailed implementation mode

[0039] Refer to Figures 1 to 13 , the following are detailed embodiments of the present invention.

[0040] The push-pull type bladder irrigation device of this embodiment includes a straight and transparent housing 1. The housing 1 forms an installation cavity 11 along the axial direction. One end of the installation cavity 11 forms an insertion port 12. A piston assembly 2 that moves axially is provided in the installation cavity 11. The piston assembly 2 includes a piston body 21 and a distribution part 22. A communication end 13 is formed at the bottom of the housing 1 along the axial direction. A through hole 131 communicating with the installation cavity 11 is formed in the communication end 13 along the axial direction. A connector 3 is provided at the through hole 131. A catheter 4 is provided at one end of the connector 3 away from the housing 1. The catheter 4 is used to be inserted into the patient's bladder. A liquid stop clamp is provided at one end of the catheter 4 close to the connector 3. When the piston assembly 2 moves axially in the installation cavity 11, the liquid volume in the installation cavity 11 can be changed, and it is communicated with the patient's bladder through the catheter 4, so as to realize injecting or extracting the liquid in the patient's bladder, and further realize the irrigation of the patient's bladder.

[0041] It can be understood that, in some embodiments, the liquid stop clamp can be replaced by a ball valve 5 to control the flow and cut-off of the liquid flowing out of the catheter 4.

[0042] Among them, the piston body 21 includes a piston head 211 that fits against the side wall of the installation cavity 11. One end of the piston head 211 forms a first sleeve 212. A piston handle 213 is formed along the circumferential direction at one end of the first sleeve 212 away from the piston head 211. The distribution part 22 is slidably matched with the inner wall of the first sleeve 212. Three liquid through pipes 214 are formed at intervals along the axial direction on the inner wall of the first sleeve 212. The three liquid through pipes 214 are respectively communicated with a flushing liquid container, a pure water container and a waste liquid container through hoses from top to bottom. The distribution part 22 includes a second sleeve 221 and a distribution handle 222 formed at one axial end of the second sleeve 221 and blocking the second sleeve 221. One liquid through hole 223 is formed at the second sleeve 221. The liquid through hole 223 is used to move along the height direction and communicate with the three liquid through pipes 214 respectively. Therefore, when the second sleeve 221 slides along the axis, the liquid through hole 223 can be respectively corresponding and matched with the three liquid through pipes 214, so as to realize the communication between the installation cavity 11 and different containers. Cooperating with the movement of the piston body 21 can realize the operations of injecting flushing liquid, injecting pure water or discharging waste liquid into the patient's bladder, and all can be operated by one person without external assistance, so as to improve the working efficiency of the operator.

[0043] Specifically, when it is necessary to inject the flushing liquid into the patient's bladder, first keep the liquid stop clip or the ball valve 5 in the closed state, and mate the liquid through hole 223 with the liquid through pipe 214 of the corresponding flushing liquid container. Pull the piston body 21 away from the communication end 13, and the flushing liquid can be drawn into the installation cavity 11. After the extraction is completed, move the liquid through hole 223 to make it seal and fit with the inner wall of the first sleeve 212. Open the liquid stop clip or the ball valve 5, and push the piston body 21 towards the communication end 13 to inject the flushing liquid in the installation cavity 11 into the patient's body. The operation of injecting pure water into the patient's bladder is similar to the above-mentioned injection of the flushing liquid and will not be elaborated here.

[0044] Further, when it is necessary to drain the waste liquid in the patient's bladder, first pull the piston body 21 away from the communication end 13, and the waste liquid in the patient's bladder can be drawn into the installation cavity 11. Then close the liquid stop clip or the ball valve 5, mate the liquid through hole 223 with the liquid through pipe 214 of the corresponding waste liquid container, and push the piston body 21 towards the communication end 13, and the waste liquid can be drained from the installation cavity 11.

[0045] It can be understood that in order to completely drain the waste liquid, the waste liquid container is placed at a position lower than the push-pull type bladder irrigation device during use. Therefore, the waste liquid in the installation cavity 11 can be effectively drained into the waste liquid container through the siphon principle.

[0046] In some embodiments, a connector 6 is provided at the liquid through pipe 214. The connector 6 is sequentially provided with a mating section 61, an installation section 62, and a fixing section 63 along the axial direction. The mating section 61 is used to mate with a hose. A first protrusion 611 is formed circumferentially at the mating section 61. A metal clamp or a plastic clamp is sleeved on the outer wall of the hose between the first protrusion 611 and the installation section 62. The installation section 62 is hexagonal prism-shaped and is used to mate with a wrench. The fixing section 63 is used to threadedly mate with the piston head 211. A washer 64 is provided on one side of the fixing section 63 close to the piston head 211.

[0047] Further, a sealing ring 2231 is provided at the liquid through hole 223. The material of the sealing ring 2231 is rubber. Therefore, the sealing performance when the liquid through hole 223 mates with the liquid through pipe 214 and the sealing performance when the liquid through hole 223 abuts against the inner wall of the first sleeve 212 can be preferably improved, and the occurrence of liquid leakage can be prevented.

[0048] In some embodiments, a limiting groove 7 is formed on the inner wall of the first sleeve 212, and a limiting body 8 is correspondingly formed on the outer wall of the second housing 1. The limiting body 8 is used to correspondingly mate with the limiting groove 7. Therefore, the movement of the second sleeve 221 can be limited.

[0049] Among them, the limiting groove 7 includes a first sub-groove 71 extending axially from the upper end face of the first sleeve 212, and three second sub-grooves 72 formed at intervals in the extending direction of the first sub-groove 71. The second sub-grooves 72 are formed circumferentially along the second sleeve 221. A receiving groove 73 is formed at one end of the second sub-groove 72 away from the first sub-groove 71. The limiting body 8 is elastic. When the limiting body 8 is not under pressure, the maximum distance between the two axial sides is L1, and the maximum distance between the two axial sides of the second sub-groove 72 is L2, and L2 < L1.

[0050] Specifically, the first sub-groove 71 can limit the axial movement of the limiting body 8, and the second sub-groove 72 can limit the circumferential rotation of the limiting body 8, so as to realize the corresponding cooperation between the liquid through hole 223 and the liquid through pipes 214 at different heights. The receiving groove 73 can fix and limit the limiting body 8, that is, the limiting body 8 is under pressure when entering the second sub-groove 72, and the distance between the two ends of the limiting body 8 decreases. When sliding to the receiving groove 73, the limiting body 8 is not under pressure, and the distance between the two ends of the limiting body 8 is restored, so that the limiting body 8 can be restricted in the receiving groove 73.

[0051] Further, the limiting body 8 includes two flexible elastic strips 81 arranged at intervals along the axis. The two elastic strips 81 are symmetrically arranged axially. First inclined surfaces 811 are formed at both ends of the elastic strip 81, and second inclined surfaces 721 are correspondingly formed at both ends of the second sub-groove 72, so it is convenient for the limiting body 8 to be inserted into the second sub-groove 72.

[0052] In some embodiments, an installation groove 2111 is formed on the side wall of the piston head 211. A sealing rubber ring 215 is sleeved at the installation groove 2111. A clamping block 2151 that is in imitation fit with the installation groove 2111 is formed on the inner wall of the sealing rubber ring 215, so as to realize the fixed cooperation between the sealing rubber ring 215 and the installation groove 2111.

[0053] It can be understood that the material of the sealing rubber ring 215 is rubber, and the installation groove 2111 can be a square groove or a dovetail groove.

[0054] In some embodiments, the adapter 3 sequentially forms an insertion section 31, a locking section 32, and a connection section 33 along the axis. The adapter 3 axially forms a through liquid flow channel 34. The insertion section 31 is used for threaded cooperation with the through hole 131. The locking section 32 is a hexagonal column. A retaining piece 321 is formed at one end of the locking section 32 close to the insertion section 31. The retaining piece 321 is used for abutting and cooperating with the communication end 13. One end of the conduit 4 is sleeved at the connection section 33. A second protrusion 331 is formed circumferentially at the connection section 33. A metal clamp or a plastic clamp is provided on the outer wall of the conduit 4 between the second protrusion 331 and the locking section 32.

[0055] In some embodiments, the conduit 4 is made of semi-rigid transparent plastic, and a rounded corner is formed at one end of the conduit 4 away from the adapter 3, so as to effectively reduce the pain of inserting the conduit 4 into the patient's body.

[0056] In some embodiments, a scale is formed along the axial direction on the outer wall of the housing 1, enabling the operator to precisely control the injection and extraction of the liquid in the bladder during use, thereby achieving precise bladder irrigation operations.

[0057] As seen in Figure 14 , at least one embodiment of the present invention further provides a method for using a push-pull type bladder irrigation device, which includes steps S1 - S7.

[0058] Step S1: Insert the catheter 4 into the patient's bladder through the patient's urethral catheter.

[0059] Specifically, by aligning the catheter 4 with the patient's urethral orifice, slowly insert the catheter 4, and make the catheter 4 gradually advance through the urethral catheter until there is liquid oozing out, indicating that it has entered the bladder.

[0060] Step S2: Connect the catheter 4 to the communication end 13 through the adapter 3. At this time, keep the liquid stop clip or ball valve 5 in the closed state, and connect the connectors 6 at the three liquid - passing tubes 214 to the irrigation solution container, pure water container, and waste liquid container respectively.

[0061] At this time, the preparations for performing bladder irrigation on the patient are completed. The following are the specific irrigation operations.

[0062] Step S3: Hold the first sleeve 212, and pull or rotate the second sleeve 221 to connect the liquid - passing hole 223 with the liquid - passing tube 214 of the corresponding irrigation solution container. Then, pull the piston handle 213 to make the irrigation solution enter the installation cavity 11. After extracting 300 ml of irrigation solution, rotate the second sleeve 221 to move the limiting body 8 from the accommodating groove 73 to the first sub - groove 71. At this time, the liquid - passing hole 223 abuts against the inner wall of the first sleeve 212 and is in a closed state. Then, open the liquid stop clip or ball valve 5, and slowly push the piston handle 213 to make the irrigation solution enter the patient's bladder. Then, close the liquid stop clip or ball valve 5 and keep it for 5 minutes.

[0063] Among them, the irrigation solution is 0.9% sodium chloride solution, that is, normal saline. Normal saline irrigation can help remove bacteria, pus, and other infectious substances, thereby promoting healing.

[0064] Step S4: Open the liquid stop clip or ball valve 5, pull the piston handle 213 to make the waste liquid enter the installation cavity 11. Then, close the liquid stop clip or ball valve 5. Then, hold the first sleeve 212, and pull or rotate the second sleeve 221 to connect the liquid - passing hole 223 with the liquid - passing tube 214 of the corresponding waste liquid container. Push the piston handle 213 towards the communication end 13 to discharge the waste liquid in the installation cavity 11 into the waste liquid container.

[0065] Step S5: Hold the first sleeve 212, and pull or rotate the second sleeve 221 to connect the liquid passage hole 223 with the liquid delivery tube 214 of the corresponding purified water container. Then, pull the piston handle 213 to allow the flushing liquid to enter the installation cavity 11. After extracting 300 ml of purified water, rotate the second sleeve 221 to move the limiting body 8 from the accommodation groove 73 to the first sub-groove 71. At this time, the liquid passage hole 223 abuts against the inner wall of the first sleeve 212 and is in a closed state. Then, open the liquid stop clamp or ball valve 5, and slowly push the piston handle 213 to allow the purified water to enter the patient's bladder. After that, close the liquid stop clamp or ball valve 5 and hold for 5 minutes.

[0066] Step S6: Repeat the operation in Step S4.

[0067] Step S7: Remove the catheter 4 inserted into the patient's bladder to complete the bladder irrigation operation.

[0068] It is easy to understand that those skilled in the art can combine, split, reorganize, etc. the embodiments of the present application based on one or several embodiments provided by the present application to obtain other embodiments, and these embodiments do not exceed the protection scope of the present application.

Claims

1. A push-pull type bladder irrigation device, characterized in that, It includes a straight and transparent housing. The housing forms an installation cavity along the axial direction. One end of the installation cavity forms an insertion port. A piston assembly that moves axially is provided in the installation cavity. The piston assembly includes a piston body and a distribution part. The piston body includes a piston head that fits against the side wall of the installation cavity. One end of the piston head forms a first sleeve. A piston handle is formed circumferentially at the end of the first sleeve away from the piston head. The distribution part is slidably fitted with the inner wall of the first sleeve. Three liquid delivery pipes are formed at intervals along the axial direction on the inner wall of the first sleeve. The three liquid delivery pipes are respectively connected to a flushing liquid container, a pure water container, and a waste liquid container through hoses from top to bottom. The distribution part includes a second sleeve and a distribution handle formed at one axial end of the second sleeve and blocking the second sleeve. One liquid delivery hole is formed at the second sleeve. The liquid delivery hole is used to move along the height direction and communicate with the three liquid delivery pipes respectively. A communication end is formed at the bottom of the housing along the axial direction. A through hole communicating with the installation cavity is formed along the axial direction at the communication end. A connector is provided at the through hole. A catheter is provided at the end of the connector away from the housing. The catheter is used to be inserted into the bladder of a patient. A liquid stop clip or a ball valve is provided at the end of the catheter close to the connector.

2. The push-pull type bladder irrigation device according to claim 1, wherein, A connector is provided at the liquid delivery pipe. The connector is sequentially provided with a fitting section, an installation section, and a fixing section along the axial direction. The fitting section is used to cooperate with the hose. A first protrusion is formed circumferentially at the fitting section. A metal clamp or a plastic clamp is sleeved on the outer wall of the hose between the first protrusion and the installation section. The installation section is in the shape of a hexagonal prism and is used to cooperate with a wrench. The fixing section is used to be threadedly fitted with the piston head. A washer is provided on the side of the fixing section close to the piston head.

3. The push-pull type bladder irrigation device according to claim 1, characterized in that, A limiting groove is formed on the inner wall of the first sleeve, and a limiting body is correspondingly formed on the outer wall of the second housing. The limiting body is used to be correspondingly fitted with the limiting groove.

4. The push-pull type bladder irrigation device according to claim 3, wherein, The limiting groove includes a first sub-groove extending axially from the upper end surface of the first sleeve, and three second sub-grooves formed at intervals in the extending direction of the first sub-groove. The second sub-grooves are formed circumferentially along the second sleeve. A receiving groove is formed at the end of the second sub-groove away from the first sub-groove. The limiting body has elasticity. The maximum distance between the two axial sides of the limiting body in the non-pressed state is L1, and the maximum distance between the two axial sides of the second sub-groove is L2, and L2 < L1.

5. The push-pull type bladder irrigation device according to claim 4, wherein, The limiting body includes two flexible elastic strips arranged at intervals along the axial direction. The two elastic strips are symmetrically arranged axially. First inclined surfaces are formed at both ends of the elastic strips, and second inclined surfaces are correspondingly formed at both ends of the second sub-groove.

6. The push-pull type bladder irrigation device according to claim 1, characterized in that, A sealing ring is provided at the liquid delivery hole. The material of the sealing ring is rubber.

7. The push-pull type bladder irrigation device according to claim 1, characterized in that, An installation groove is formed on the side wall of the piston head. A sealing rubber ring is sleeved at the installation groove. A clamping block that is in imitation fit with the installation groove is formed on the inner wall of the sealing rubber ring.

8. The push-pull type bladder irrigation device according to claim 1, characterized in that The connector is sequentially formed with an insertion section, a locking section, and a connection section along the axial direction. A liquid flow channel penetrating axially is formed in the connector. The insertion section is used to be threadedly fitted with the through hole. The locking section is in the shape of a hexagonal prism. A retaining piece is formed at the end of the locking section close to the insertion section. The retaining piece is used to abut and cooperate with the communication end. One end of the catheter is sleeved at the connection section. A second protrusion is formed circumferentially at the connection section. A metal clamp or a plastic clamp is provided on the outer wall of the catheter between the second protrusion and the locking section.

9. The push-pull type bladder irrigation device according to claim 1, characterized in that, The catheter is made of semi-rigid transparent plastic. A rounded corner is formed at the end of the catheter away from the connector.

10. The push-pull type bladder irrigation device according to claim 1, characterized in that, Scales are formed on the outer wall of the housing along the axial direction.

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