A nursing enema device

Abstract

The application discloses a nursing enema device and belongs to the technical field of medical devices. The device comprises a main machine, a pipeline assembly and an anal tube assembly. The main machine is integrated with a peristaltic pump and a heating module, and a matched control panel is used for regulating and controlling liquid temperature and conveying flow rate. The pipeline assembly is provided with a three-way reversing valve, which can switch between liquid injection and drainage channels and is used in combination with a liquid storage bag, a waste liquid bag and an inflatable ball. The anal tube assembly comprises a rear anal tube, a telescopic extension tube and a head end provided with a soft silica gel oil cone. An independent lubricating oil pipe is arranged in the head end. A sealed air bag is arranged on the outer side of the rear anal tube. The rear anal tube and the extension tube are uniformly provided with a plurality of liquid outlet holes. The device can adjust the insertion depth of the anal tube, automatically and uniformly lubricate the intestinal tract during intubation, and prevent leakage and slipping through air bag sealing. The device can realize constant-temperature and uniform-speed liquid medicine injection and multi-point dispersion, reduces intestinal stimulation, realizes closed liquid injection and drainage through the three-way valve, is simple to operate, can reduce mucosal damage and reduce the risk of hospital infection, and is suitable for various clinical enema nursing.

Description

Technical Field

[0001] This invention belongs to the field of medical device technology, specifically referring to a nursing enema device. Background Technology

[0002] Clinical enemas are widely used in nursing scenarios such as bowel cleansing and drug retention therapy. Traditional enema instruments have rigid tips without built-in lubrication structures, making it easy to scratch the intestinal mucosa during insertion. Furthermore, the fixed length of the anal tube cannot be adapted to different patients, and the lack of a sealing and fixing structure makes it easy for the medication to leak and for the anal tube to slip off. At the same time, the medication is not heated at a constant temperature and only dispenses from a single orifice, which can easily irritate the intestines and cause spasms, and the diffusion effect of the medication is poor.

[0003] Existing equipment requires repeated disassembly and reassembly of pipelines for fluid injection and drainage, making the operation process cumbersome. Open discharge of waste liquid is prone to generating odors and causing cross-infection. Lubrication and fluid injection pipelines are prone to cross-contamination. The various functional components are scattered and have low integration, which greatly increases the workload of medical staff and has significant limitations in clinical use. Summary of the Invention

[0004] In view of the above situation and to overcome the shortcomings of the prior art, the present invention provides a nursing enema device, which effectively solves the above problems.

[0005] The technical solution adopted by the present invention is as follows: The present invention proposes a nursing enema device, including a main unit, a tubing assembly and an anal tube assembly. The tubing assembly is disposed on the main unit, and the anal tube assembly is disposed on the tubing assembly. The anal tube assembly includes a posterior anal tube, an extension tube and an insertion head. The posterior anal tube is sleeved on the extension tube, and the insertion head is disposed at the front end of the extension tube.

[0006] Furthermore, the front end of the inner wall of the posterior anal canal is provided with an elongation tube slide cavity, the elongation tube slides in the elongation tube slide cavity, the front end of the elongation tube slide cavity is symmetrically provided with positioning bosses, the inner wall of the elongation tube slide cavity is provided with a circular array of liquid discharge guide grooves, and a liquid discharge hole is provided in a linear array in the liquid discharge guide grooves.

[0007] Furthermore, the outer wall of the posterior anal tube is provided with an air bladder, the air bladder is located on the lower side of the sliding cavity of the elongation tube, the bottom of the posterior anal tube is symmetrically provided with an inflation connector and an injection connector, the air bladder is provided with an air bladder flat tube, the air bladder flat tube is connected to the inflation connector, the inflation connector is provided with a spring valve plate, the bottom of the posterior anal tube is provided with a base plate, and the center of the base plate is provided with an oil pipe through hole.

[0008] Preferably, the air bladder on the outer wall of the posterior anal tube, when inflated, fits snugly against the perianal area and intestinal wall, sealing the gap and preventing leakage of enema fluid that could contaminate the bed sheets. The air bladder encircles the anal tube, forming an axial restraint, so the anal tube is less likely to slip off when the patient turns over or moves, eliminating the need for manual support. The inflation connector has a built-in spring valve plate that automatically closes and locks the air after inflation, preventing rapid pressure release when the inflation ball is released, thus maintaining a sealed and fixed effect. When deflation is required, simply press the valve plate to quickly release the air, making tube removal convenient.

[0009] Furthermore, the inner wall of the elongated tube is provided with an oil pipe positioning ring at the front end, the outer wall of the elongated tube is provided with a circular array of guide grooves, the front end of the guide grooves extends to the top of the elongated tube, the bottom of the guide grooves and the area near the front end are respectively provided with positioning grooves, the positioning boss slides in the guide grooves, the positioning bosses are engaged in the positioning grooves by rotation, and the outer wall of the elongated tube is provided with a second liquid outlet hole in a circular array.

[0010] Preferably, the sliding and rotating locking structure of the guide groove and the front and rear double positioning grooves provides a stable sliding track for the elongation tube. The locking grooves help to achieve extension and retraction limits, and the extension and retraction adjustment is smooth and without jamming. The two length levels are stably fixed and can be adapted to different patients' intestinal depths.

[0011] Furthermore, the insertion head includes a soft-walled oil cone and an oil tube. The front end of the oil tube is located inside the soft-walled oil cone. The top center of the soft-walled oil cone has an oil head groove. The bottom side wall of the oil head groove has an oil groove through hole. The side wall of the soft-walled oil cone is made of soft silicone. The front end of the oil tube has an oil inlet. The oil tube is provided with a retaining ring near the soft-walled oil cone. The oil tube is fixed to the oil tube positioning ring by the retaining ring, and the oil tube is tightly inserted into the oil groove through hole.

[0012] Furthermore, the insertion head also includes an oil outlet head and a piston rod. The oil outlet head is located in the oil outlet groove, and the center of the oil outlet head has a through oil outlet hole. The piston rod is located in the oil pipe.

[0013] Preferably, the soft-walled oil cone has a smooth, cone-shaped head without sharp edges, which conforms to the physiological curvature of the intestine during insertion, greatly reducing the risk of scratching or abrasion of the intestinal mucosa; the soft silicone material is compatible with the perianal sphincter, significantly reducing the pain of insertion and improving patient comfort; when the soft-walled oil cone is squeezed, lubricating oil seeps out evenly from the head of the oil outlet, fully covering the outer wall of the head end, providing continuous lubrication throughout the process, and reducing insertion resistance.

[0014] Furthermore, the main unit has a heating pump slot and a control panel on its upper surface. The heating pump slot has an inlet and an outlet port communicating with it on its side. A heating module is provided inside the heating pump slot. The main unit includes a peristaltic pump, which is located inside the heating pump slot. The control panel is electrically connected to the heating module and the peristaltic pump, respectively.

[0015] Furthermore, the pipeline assembly includes a three-way reversing valve, an infusion pipeline, and a storage bag. The infusion pipeline passes through the pump inlet and pump outlet in sequence and is snapped onto the peristaltic pump. One end of the infusion pipeline is connected to the storage bag, and the other end of the infusion pipeline is located on the three-way reversing valve.

[0016] Furthermore, the three-way reversing valve includes a valve body, a valve core, and a knob. The valve body is provided with an infusion tube connector, a front end connector, and a drainage tube connector on its outer side. The valve core rotates inside the valve body, the knob is located on the valve core, and the infusion line is connected to the infusion tube connector.

[0017] Preferably, the infusion tube, front end tube, and drainage tube of the three-way reversing valve are integrated into one unit. A single knob can be turned to switch between the three channels of infusion, drainage, and closure, eliminating the need for repeated disassembly and assembly of the pipeline and reducing liquid leakage and operation steps.

[0018] Furthermore, the piping assembly also includes a front-end pipe, a drainage pipe, a waste liquid bag, and an inflation ball. One end of the front-end pipe is located on a front-end pipe connector, and the other end of the front-end pipe is located on an injection connector. One end of the drainage pipe is connected to the waste liquid bag, and the other end of the drainage pipe is located on a drainage pipe connector. The inflation ball is located on an inflation connector.

[0019] The beneficial effects achieved by the present invention using the above structure are as follows: 1. The front soft silicone oil cone conforms to the physiological curvature of the intestine, and the built-in independent oil circuit can automatically and evenly lubricate, greatly reducing the pain of tube insertion and the risk of intestinal mucosal scratches.

[0020] 2. The extension tube is retractable and lockable to accommodate different insertion depths for different patients; the outer wall airbag inflates and seals the perianal area, which can fix the anal tube to prevent slippage and prevent leakage of enema fluid to contaminate the bedding.

[0021] 3. The double-layered annular porous dispersing liquid eliminates local high-pressure stimulation; the main unit is heated at a constant temperature, and the peristaltic pump allows for controlled flow rate, avoiding intestinal spasms caused by cold liquid stimulation and improving the effectiveness of retention enemas and cleansing enemas.

[0022] 4. The three-way reversing valve allows for one-button switching between injection and drainage paths, eliminating the need for repeated disassembly and reassembly of pipelines; the integrated control panel centrally regulates temperature and flow rate, allowing a single person to complete the entire operation and shortening nursing time.

[0023] 5. The entire process involves closed-loop pipeline transportation and waste collection, with no leakage of liquids or waste, isolating odors, reducing cross-infection, and complying with hospital infection control standards. The lubrication, enema, and inflation pipelines do not cross-flow. The anal tube and tubing are disposable consumables, while the main unit is reusable, balancing medical hygiene with operating costs. Attached Figure Description

[0024] Figure 1 This is a perspective view of a nursing enema device proposed in this invention; Figure 2 This is a front view of a nursing enema device proposed in this invention; Figure 3 This is a schematic diagram of the anal tube assembly of a nursing enema device proposed in this invention; Figure 4 for Figure 3 A cross-sectional view along section line AA; Figure 5 for Figure 3 A cross-sectional view along the cutting line BB; Figure 6 This is a cross-sectional schematic diagram of the structure of a three-way reversing valve of a nursing enema device proposed in this invention; Figure 7 This is a cross-sectional schematic diagram of the posterior anal tube of a nursing enema device proposed in this invention; Figure 8 This is a schematic diagram of the structure of the extension tube of a nursing enema device proposed in this invention; Figure 9 This is a cross-sectional schematic diagram of the insertion head of a nursing enema device proposed in this invention; Figure 10 for Figure 4 A magnified view of section I in the middle.

[0025] The components include: 1. Main unit; 11. Heating pump tank; 111. Pump inlet; 112. Pump outlet; 12. Control panel; 13. Peristaltic pump; 2. Piping assembly; 21. Three-way reversing valve; 211. Valve housing; 2111. Infusion tube connector; 2112. Front tube connector; 2113. Drainage tube connector; 212. Valve core; 213. Knob; 22. Infusion line; 23. Front line; 24. Drainage tube; 25. Storage bag; 26. Waste bag; 27. Inflatable ball; 3. Rectal tube assembly; 31. Rear rectal tube; 311. Extension tube slide cavity; 3111. Positioning boss; 312. Discharge tube. Hole 1, 313, Liquid outlet guide groove, 314, air bladder, 3141, air bladder flat tube, 315, inflation connector, 3151, spring valve plate, 316, liquid injection connector, 317, base plate, 3171, oil pipe through hole, 32, extension tube, 321, oil pipe positioning ring, 322, guide groove, 323, positioning groove, 324, liquid outlet hole 2, 33, insertion head end, 331, soft wall oil cone, 3311, oil head groove, 3312, oil groove through hole, 332, oil pipe, 3321, oil injection port, 3322, retaining ring, 333, oil outlet head, 3331, oil outlet hole, 334, piston rod.

[0026] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof. Detailed Implementation

[0027] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0028] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0029] like Figures 1-10 As shown, the present invention proposes a nursing enema device, including a main unit 1, a tubing assembly 2 and an anal tube assembly 3. The tubing assembly 2 is disposed on the main unit 1, and the anal tube assembly 3 is disposed on the tubing assembly 2. The anal tube assembly 3 includes a posterior anal tube 31, an extension tube 32 and an insertion head 33. The posterior anal tube 31 is sleeved on the extension tube 32, and the insertion head 33 is disposed at the front end of the extension tube 32.

[0030] The inner wall of the posterior anal canal 31 has an elongation tube sliding cavity 311 at the front end. The elongation tube 32 slides in the elongation tube sliding cavity 311. The front end of the elongation tube sliding cavity 311 has symmetrical positioning bosses 3111. The inner wall of the elongation tube sliding cavity 311 has a circular array of liquid discharge guide grooves 313. The liquid discharge guide grooves 313 have a linear array of liquid discharge holes 312.

[0031] An air bladder 314 is provided on the outer wall of the posterior anal tube 31. The air bladder 314 is located below the sliding cavity 311 of the elongation tube. An inflation connector 315 and an injection connector 316 are symmetrically provided at the bottom of the posterior anal tube 31. The air bladder 314 is provided with an air bladder flat tube 3141, which is connected to the inflation connector 315. A spring valve plate 3151 is provided inside the inflation connector 315. A base plate 317 is provided at the bottom of the posterior anal tube 31. An oil pipe through hole 3171 is provided in the center of the base plate 317.

[0032] The inner wall of the elongation tube 32 has an oil pipe positioning ring 321 at the front end, and the outer wall of the elongation tube 32 has a circular array of guide grooves 322. The front end of the guide grooves 322 extends to the top of the elongation tube 32. The bottom and near the front end of the guide grooves 322 are respectively provided with positioning grooves 323. The positioning boss 3111 slides in the guide groove 322 and is engaged in the positioning groove 323 by rotation. The outer wall of the elongation tube 32 has a circular array of liquid outlet holes 324.

[0033] The insertion head 33 includes a soft-walled oil cone 331 and an oil pipe 332. The front end of the oil pipe 332 is located inside the soft-walled oil cone 331. The top center of the soft-walled oil cone 331 is provided with an oil head groove 3311. The bottom side wall of the oil head groove 3311 is provided with an oil groove through hole 3312. The side wall of the soft-walled oil cone 331 is made of soft silicone. The front end of the oil pipe 332 is provided with an oil inlet 3321. A retaining ring 3322 is provided near the soft-walled oil cone 331 of the oil pipe 332. The oil pipe 332 is fixed to the oil pipe positioning ring 321 by the retaining ring 3322, and the oil pipe 332 is tightly inserted into the oil groove through hole 3312.

[0034] The insertion head 33 also includes an oil outlet head 333 and a piston rod 334. The oil outlet head 333 is located in the oil head groove 3311, and the center of the oil outlet head 333 has a through oil outlet hole 3331. The piston rod 334 is located in the oil pipe 332.

[0035] The main unit 1 has a heating pump slot 11 and a control panel 12 on its upper surface. The heating pump slot 11 has an inlet hole 111 and an outlet hole 112 communicating with it on its side. The heating pump slot 11 has a heating module inside. The main unit 1 includes a peristaltic pump 13, which is located inside the heating pump slot 11. The control panel 12 is electrically connected to the heating module and the peristaltic pump 13 respectively.

[0036] The pipeline assembly 2 includes a three-way reversing valve 21, an infusion pipeline 22, and a storage bag 25. The infusion pipeline 22 passes through the pump inlet 111 and the pump outlet 112 in sequence and is engaged with the peristaltic pump 13. One end of the infusion pipeline 22 is connected to the storage bag 25, and the other end of the infusion pipeline 22 is located on the three-way reversing valve 21.

[0037] The three-way reversing valve 21 includes a valve body 211, a valve core 212, and a knob 213. The valve body 211 has an infusion tube connector 2111, a front end connector 2112, and a drainage tube connector 2113 on its outer side. The valve core 212 rotates inside the valve body 211, and the knob 213 is located on the valve core 212. The infusion line 22 is connected to the infusion tube connector 2111.

[0038] The pipeline assembly 2 also includes a front-end pipeline 23, a drainage pipe 24, a waste liquid bag 26, and an inflation ball 27. One end of the front-end pipeline 23 is located on the front-end pipe connector 2112, and the other end of the front-end pipeline 23 is located on the liquid injection connector 316. One end of the drainage pipe 24 is connected to the waste liquid bag 26, and the other end of the drainage pipe 24 is located on the drainage pipe connector 2113. The inflation ball 27 is located on the inflation connector 315.

[0039] In practical use, the prepared enema solution is loaded into the storage bag 25, the infusion tubing 22 is inserted into the pump head of the peristaltic pump 13, and the two ends are connected to the storage bag 25 and the infusion tubing connector 2111 of the three-way reversing valve 21, respectively; the two ends of the front end tubing 23 are connected to the front end connector 2112 and the injection connector 316, respectively; the two ends of the drainage tube 24 are connected to the drainage tube connector 2113 and the waste liquid bag 26, respectively; the inflation balloon 27 is connected to the inflation connector 315; the extension tube 32 is adjusted to the retracted state so that the positioning boss 3111 is engaged in the positioning groove 323 on the rear side, thus completing the initial state locking.

[0040] By pushing the piston rod 334 inward, lubricating fluid is injected into the soft-walled oil cone 331 through the oil inlet 3321, which is shaped like a counter-flow duckbill valve. The insertion head 33 is aligned with the anus, and the anal tube assembly 3 is slowly pushed forward. The soft-walled oil cone 331 conforms to the physiological curvature of the intestine, reducing the risk of mucosal damage. Simultaneously, the pressure on the soft-walled oil cone 331 forces the lubricating oil inside through the oil groove through-hole 3312 into the oil head groove 3311, and then... Oil from the outlet 3331 of the oil outlet head 333 seeps out evenly, wetting the outer surface of the soft-walled oil cone 331; after being inserted to the preset depth, the inflation ball 27 is repeatedly squeezed, and gas enters the airbag 314 through the inflation connector 315 and the airbag flat tube 3141, causing the airbag 314 to expand and fit against the inner wall of the intestine, thereby achieving axial fixation of the anal tube and perianal sealing to prevent the enema fluid from overflowing; after inflation is completed, the inflation ball 27 is released, and the spring valve plate 3151 automatically closes to maintain the airbag pressure.

[0041] To increase the insertion depth, hold the anal tube 31 in place, rotate the elongation tube 32 to disengage the positioning boss 3111 from the positioning groove 323, and push the elongation tube 32 forward along the guide groove 322 to drive the insertion head 33 deeper into the intestine; after reaching the target depth, rotate the elongation tube 32 in the opposite direction to make the positioning boss 3111 engage with the positioning groove 323 on the front side, thus completing the position locking in the elongated state.

[0042] Rotate the knob 213 of the three-way reversing valve 21 to switch the passage and connect the infusion tube connector 2111 with the front tube connector 2112; set the heating temperature and peristaltic pump flow rate through the control panel 12; after starting the device, the enema fluid in the storage bag 25 enters the heating pump tank 11 through the infusion tube 22, is heated to a suitable temperature by the heating module, and then flows into the injection connector 316 through the three-way reversing valve 21 and the front tube 23; the enema fluid enters the outlet guide groove 313 of the anal tube 31, and flows evenly to the surrounding area of ​​the intestine through multiple sets of outlet holes 1 312 and outlet holes 2 324, realizing multi-point diffusion injection and improving the enema effect.

[0043] After the injection is completed and the preset time is maintained, rotate knob 213 to switch the three-way reversing valve 21 to connect the front pipe connector 2112 with the drainage pipe connector 2113. Under pressure, the waste liquid and excrement in the intestine flow back to the outlet guide groove 313 through outlet hole 2 324 and outlet hole 1 312, and then flow into the waste liquid bag 26 through injection connector 316, front pipe 23, three-way reversing valve 21, and drainage pipe 24, thus completing the drainage operation.

[0044] After drainage is completed, the gas in the airbag 314 is released through the inflation connector 315, the extension tube 32 is rotated to unlock and retract to reset, and the anal tube assembly 3 is slowly pulled out from the intestine; the disposable tubing assembly 2 and anal tube assembly 3 are disposed of in accordance with medical waste regulations, and the main unit 1 is cleaned and put into use.

[0045] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0046] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention.

[0047] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the invention, such designs should fall within the protection scope of the present invention.

Claims

1. A nursing enema device, characterized in that: It includes a host (1), a tubing assembly (2) and an anal tube assembly (3), wherein the tubing assembly (2) is disposed on the host (1) and the anal tube assembly (3) is disposed on the tubing assembly (2); The anal tube assembly (3) includes a posterior anal tube (31), an elongation tube (32), and an insertion head (33). The posterior anal tube (31) is sleeved on the elongation tube (32), and the insertion head (33) is located at the front end of the elongation tube (32).

2. The enema device for nursing use according to claim 1, characterized in that: The inner wall of the posterior anal canal (31) is provided with an elongation tube sliding cavity (311) at the front end. The elongation tube (32) slides in the elongation tube sliding cavity (311). The front end of the elongation tube sliding cavity (311) is provided with positioning bosses (3111). The inner wall of the elongation tube sliding cavity (311) is provided with a circular array of liquid discharge guide grooves (313). The liquid discharge guide grooves (313) are provided with a linear array of liquid discharge holes (312).

3. The enema device for nursing use according to claim 2, characterized in that: The outer wall of the posterior anal tube (31) is provided with an air bladder (314), the air bladder (314) is located below the sliding cavity (311) of the elongation tube, the bottom of the posterior anal tube (31) is symmetrically provided with an inflation connector (315) and an injection connector (316), the air bladder (314) is provided with an air bladder flat tube (3141), the air bladder flat tube (3141) is connected to the inflation connector (315), the inflation connector (315) is provided with a spring valve plate (3151), the bottom of the posterior anal tube (311) is provided with a base plate (317), the center of the base plate (317) is provided with an oil pipe through hole (3171).

4. The enema device for nursing use according to claim 3, characterized in that: The inner wall of the elongated tube (32) is provided with an oil pipe positioning ring (321) at the front end. The outer wall of the elongated tube (32) is provided with a circular array of guide grooves (322). The front end of the guide grooves (322) extends to the top of the elongated tube (32). The bottom of the guide grooves (322) and near the front end are respectively provided with positioning grooves (323). The positioning boss (3111) slides in the guide groove (322). The positioning boss (3111) is engaged in the positioning groove (323) by rotation. The outer wall of the elongated tube (32) is provided with a circular array of liquid outlet holes (324).

5. The enema device for nursing use according to claim 4, characterized in that: The insertion head (33) includes a soft-walled oil cone (331) and an oil pipe (332). The front end of the oil pipe (332) is located inside the soft-walled oil cone (331). The top center of the soft-walled oil cone (331) is provided with an oil head groove (3311). The bottom side wall of the oil head groove (3311) is provided with an oil groove through hole (3312). The side wall of the soft-walled oil cone (331) is made of soft silicone. The front end of the oil pipe (332) is provided with an oil inlet (3321). The oil pipe (332) is provided with a retaining ring (3322) near the soft-walled oil cone (331). The oil pipe (332) is fixed at the oil pipe positioning ring (321) by the retaining ring (3322), and the oil pipe (332) is tightly inserted into the oil groove through hole (3312).

6. The enema device for nursing care according to claim 5, characterized in that: The insertion head (33) also includes an oil outlet (333) and a piston rod (334). The oil outlet (333) is located in the oil outlet groove (3311), and the center of the oil outlet (333) is provided with a through oil outlet hole (3331). The piston rod (334) is located in the oil pipe (332).

7. The enema device for nursing use according to claim 6, characterized in that: The host (1) is provided with a heating pump slot (11) and a control panel (12) on its upper surface. The heating pump slot (11) is provided with an inlet hole (111) and an outlet hole (112) communicating with it on its side. The heating pump slot (11) is provided with a heating module. The host (1) includes a peristaltic pump (13). The peristaltic pump (13) is located in the heating pump slot (11). The control panel (12) is electrically connected to the heating module and the peristaltic pump (13) respectively.

8. The enema device for nursing use according to claim 7, characterized in that: The pipeline assembly (2) includes a three-way reversing valve (21), an infusion pipeline (22) and a storage bag (25). The infusion pipeline (22) passes through the pump inlet (111) and the pump outlet (112) in sequence and is engaged on the peristaltic pump (13). One end of the infusion pipeline (22) is connected to the storage bag (25), and the other end of the infusion pipeline (22) is located on the three-way reversing valve (21).

9. A nursing enema device according to claim 8, characterized in that: The three-way reversing valve (21) includes a valve body (211), a valve core (212), and a knob (213). The valve body (211) is provided with an infusion tube connector (2111), a front end connector (2112), and a drainage tube connector (2113) on its outer side. The valve core (212) rotates inside the valve body (211). The knob (213) is located on the valve core (212). The infusion line (22) is connected to the infusion tube connector (2111).

10. A nursing enema device according to claim 9, characterized in that: The pipeline assembly (2) also includes a front-end pipeline (23), a drainage pipe (24), a waste liquid bag (26), and an inflatable ball (27). One end of the front-end pipeline (23) is located on the front-end pipe connector (2112), and the other end of the front-end pipeline (23) is located on the liquid injection connector (316). One end of the drainage pipe (24) is connected to the waste liquid bag (26), and the other end of the drainage pipe (24) is located on the drainage pipe connector (2113). The inflatable ball (27) is located on the inflation connector (315).

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