A mouse enema device with a movable anal plug

Abstract

This utility model relates to the field of medical auxiliary device technology. A mouse enema device with a built-in movable anal plug includes an enema tube and an anal plug, the anal plug being slidably fitted around the periphery of the enema tube. The anal plug, along its axial direction from front to back, consists of a constricted portion, an expanding portion with increasing outer diameter, a first bulge, a constricted neck, and a second bulge. The constricted portion is a rubber tubular structure, with its outer diameter smaller than that of the first bulge, and is tightly fitted to the outside of the enema tube. The second bulge serves as a hand gripping part for hand operation. An air bladder is connected to the outer wall of the constricted neck, and the air bladder is connected to a first tube passing through the second bulge. This utility model uses the constricted neck as a locking position at the anus to prevent the first bulge from dislodging; the second bulge, exposed outside the anus during use, serves as a second line of defense against liquid leakage and also as a point of leverage for pushing and adjusting the position of the anal plug.

Description

Technical Field

[0001] This utility model relates to the field of medical auxiliary device technology, specifically an enema device. Background Technology

[0002] In basic research on intestinal diseases or other scientific projects, it is often necessary to administer drugs to mice via enema in order to verify the efficacy of a certain drug or to build a disease model.

[0003] Currently, there are no enema devices specifically designed for mice on the market. Because mice lack a distinct sigmoid colon in their intestinal structure, enema procedures or drug stimulation often cause intestinal peristalsis, leading to easy leakage of the drug from the anus and resulting in poor enema efficacy. Therefore, there is an urgent need to develop equipment suitable for mouse enemas in experiments.

[0004] Chinese patent CN208404969U discloses an enema device for laboratory mice. In this patent, a conical soft plug that slides on the drug delivery tube is used to plug the mouse's anus. However, the structure of the conical soft plug in this patent is not conducive to the operator's hand operation of the conical soft plug. Utility Model Content

[0005] In view of the problems existing in the prior art, this utility model provides a mouse enema device with a built-in movable anal plug to solve at least one of the above technical problems.

[0006] To achieve the above objectives, this utility model provides a mouse enema device with a built-in movable anal plug, comprising an enema tube and an anal plug, characterized in that the anal plug is slidably sleeved around the periphery of the enema tube;

[0007] The anal plug consists of, from front to back, a constricted portion, an expanded portion with increasing outer diameter, a first bulging portion, a constricted neck, and a second bulging portion, connected sequentially along the axial direction.

[0008] The constricted part is a rubber tube-shaped structure, and the outer diameter of the constricted part is smaller than the outer diameter of the first bulging part. The constricted part is stretched and fitted tightly to the outside of the enema tube.

[0009] The second bulge is a hand grip for hand operation. The outer diameter of the second bulge is larger than the outer diameter of the first bulge, and the outer diameter of the constricted neck is smaller than the outer diameters of both the first and second bulges.

[0010] An air bladder is connected to the outer wall of the constricted neck, and the air bladder is connected to a first tube passing through the second bulge.

[0011] This invention optimizes the structure of the anal plug, using a constricted neck as the locking point at the anus to prevent the first bulge from dislodging. The second bulge, exposed outside the anus during use, serves as a second line of defense against liquid leakage and also as the point of leverage for pushing and adjusting the position of the anal plug. When removal is needed, the expansion of the air bladder facilitates distension at the constricted neck, allowing for easy removal of the anal plug.

[0012] More preferably, the airbag includes an annular airbag wall, one end of which is fixedly connected to the outer side of the first bulge, and the other end of which is fixedly connected to the outer side of the second bulge.

[0013] When the airbag is in a deflated state, the airbag wall has an inward concave structure, and the airbag wall is in close contact with the axial end face of the first bulge, the radial outer wall of the constricted neck, and the axial end face of the second bulge.

[0014] When the airbag is inflated, the airbag wall has an outward convex structure, and the airbag wall, together with the axial end face of the first bulge, the radial outer wall of the constricted neck, and the axial end face of the second bulge, form an annular air chamber.

[0015] Alternatively, the airbag may comprise at least three radially arranged annular sub-airbags from the inside out;

[0016] Adjacent annular sub-airbags are interconnected and connected to the first pipeline.

[0017] More preferably, the constricted neck has an L-shaped docking channel for docking the airbag and the first pipeline.

[0018] More preferably, the first bulge is an annular airbag, and the annular airbag is connected to the ventilation pipe.

[0019] The ventilation pipe includes a first axial channel opened in the constricted neck and a second axial channel engaged in the second bulge, the first axial channel and the second axial channel being sequentially connected to form the ventilation pipe.

[0020] This allows for a close fit between the intestinal tube and the enema tube after inflation, preventing liquid leakage.

[0021] More preferably, the anal plug is a rubber component.

[0022] More preferably, the enema tube is a silicone tube, the front end of the enema tube is sealed, an outlet hole is provided on the outer wall of the enema tube, and the rear end of the enema tube is an inlet for connecting to a syringe.

[0023] More preferably, the front end of the enema tube has a hemispherical structure.

[0024] More preferably, the outer wall of the enema tube is provided with graduation lines.

[0025] More preferably, the axial length of the neck is 5 mm;

[0026] The axial length of the enema tube is 16 cm.

[0027] More preferably, the outer diameter of the second bulge is 10 mm.

[0028] Compared with the prior art, the beneficial effects of this utility model are:

[0029] 1) The position of the anal plug is adjustable to meet the needs of drug administration at different sites;

[0030] 2) The anal plug has two bulges, with a constricted neck between the two bulges, which conforms to the physiological structure of the anus. These two lines of defense can effectively prevent the enema fluid from seeping out.

[0031] 3) The front end of the anal plug is a closed rubber tube, which can prevent leakage of enema fluid and avoid mechanical damage to the intestines caused by operation.

[0032] 4) The constricted neck has a built-in inflation function, which facilitates the widening of the anal opening when removing the anal plug. The first bulge has a built-in inflation function; after being inflated with air, it can fully fit the intestinal tube and enema tube to prevent liquid leakage.

[0033] 5) The anal plug after enema can prevent the enema fluid from overflowing, eliminating the need to invert the mouse for a period of time, thus ensuring the effectiveness of the enema while greatly saving operation time.

[0034] 6) The enema tube is made of silicone tubing with a blunt blind end and a side opening, which ensures smooth entry into the intestine while avoiding intestinal puncture. Attached Figure Description

[0035] Figure 1 This is a cross-sectional view of a specific embodiment 1 of the present utility model;

[0036] Figure 2 This is a cross-sectional view of the airbag in an inflated state according to a specific embodiment of the present invention;

[0037] Figure 3 This is an exploded view of a specific embodiment 1 of the present utility model;

[0038] Figure 4 This is a cross-sectional view of a specific embodiment 2 of the present utility model;

[0039] Figure 5 This is a cross-sectional view of the airbag in an inflated state according to a specific embodiment 2 of this utility model;

[0040] Figure 6 This is a cross-sectional view of a specific embodiment 3 of the present utility model.

[0041] In the diagram: 1 is the enema tube, 21 is the constricted end, 22 is the expansion end, 23 is the first bulging end, 24 is the constricted neck, 25 is the second bulging end, and 26 is the air sac. Detailed Implementation

[0042] The present invention will be further described below with reference to the accompanying drawings.

[0043] See Figures 1 to 3 Specific Embodiment 1: A mouse enema device with a movable anal plug includes an enema tube 1 and an anal plug, the anal plug being slidably fitted around the periphery of the enema tube 1; the anal plug, along the axial direction from front to back, consists of a constricted portion 21, an expanding portion 22 with increasing outer diameter, a first bulge 23, a constricted neck 24, and a second bulge 25 connected in sequence; the constricted portion 21 is a rubber tubular structure, the outer diameter of the constricted portion 21 is smaller than the outer diameter of the first bulge 23, and the constricted portion 21 is tightly fitted around the outside of the enema tube 1; the second bulge 25 is a hand gripping part for hand operation, the outer diameter of the second bulge 25 is larger than the outer diameter of the first bulge 23, and the outer diameter of the constricted neck 24 is smaller than the outer diameters of the first bulge 23 and the second bulge 25; an air bladder is connected to the outer wall of the constricted neck 24, and the air bladder is connected to a first tube passing through the second bulge 25. This invention optimizes the structure of the anal plug. The constricted neck 24 serves as the locking point at the anus, preventing the first bulge 23 from dislodging. The second bulge 25, exposed outside the anus during use, acts as a second line of defense against liquid leakage and also serves as the point of leverage for pushing and adjusting the position of the anal plug. When removal is required, the expansion of the air bladder facilitates dislodgement from the anus, allowing for easy removal of the anal plug.

[0044] The inner diameter of the constricted part 21 is smaller than the outer diameter of the enema tube, and the difference is no more than 1 mm.

[0045] The inner diameters of the expansion section 22, the first bulge section 23, the constriction neck 24, and the second bulge section 25 are matched with the outer diameter of the enema tube.

[0046] The anal plug is made of rubber.

[0047] The enema tube 1 is made of silicone. The front end of the enema tube 1 is sealed, and an outlet hole is provided on its outer wall. The rear end of the enema tube 1 is an inlet for connecting to a syringe. The front end of the enema tube 1 has a hemispherical structure. Graduation lines are provided on the outer wall of the enema tube 1.

[0048] The axial length of the constricted neck 24 is 5 mm; the axial length of the enema tube 1 is 16 cm.

[0049] The outer diameter of the second bulge 25 is 10 mm.

[0050] The airbag 26 includes an annular airbag wall. One end of the airbag wall is fixedly connected to the outer side of the first bulge 23, and the other end is fixedly connected to the outer side of the second bulge 25. When the airbag 26 is in a deflated state, the airbag wall has an inward concave structure, and the airbag wall is in close contact with the axial end face of the first bulge 23, the radial outer wall of the constricted neck 24, and the axial end face of the second bulge 25. When the airbag 26 is in an inflated state, the airbag wall has an outward convex structure, and the airbag wall, the axial end face of the first bulge 23, the radial outer wall of the constricted neck 24, and the axial end face of the second bulge 25 form an annular air chamber. The constricted neck 24 has an L-shaped docking channel for docking the airbag and the first pipeline.

[0051] See Figure 4 as well as Figure 5 In specific embodiment 2, based on specific embodiment 1, the difference is that the airbag 26 includes at least three radially arranged annular sub-airbags; adjacent annular sub-airbags are interconnected and connected to the first pipeline. The constricted neck 24 has an L-shaped docking channel for docking airbags and the first pipeline.

[0052] See Figure 6 In specific embodiment 3, based on specific embodiment 1 or 2, the first bulge 23 is an annular air bladder, which is connected to the ventilation tube. The ventilation tube includes a first axial channel opened at the constricted neck 24 and a second axial channel fitted into the second bulge 25. The first axial channel and the second axial channel are sequentially connected to form the ventilation tube. This facilitates full fit between the intestinal tube and the enema tube after inflation, preventing liquid leakage.

[0053] The above are merely preferred embodiments of this utility model. It should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model.

Claims

1. A mouse enema device with a movable anal plug, comprising an enema tube and an anal plug, characterized in that, The anal plug is slidably sleeved around the enema tube; The anal plug consists of, from front to back, a constricted portion, an expanded portion with increasing outer diameter, a first bulging portion, a constricted neck, and a second bulging portion, connected sequentially along the axial direction. The constricted part is a rubber tube-shaped structure, and the outer diameter of the constricted part is smaller than the outer diameter of the first bulging part. The constricted part is stretched and fitted tightly to the outside of the enema tube. The second bulge is a hand grip for hand operation. The outer diameter of the second bulge is larger than the outer diameter of the first bulge, and the outer diameter of the constricted neck is smaller than the outer diameters of both the first and second bulges. An air bladder is connected to the outer wall of the constricted neck, and the air bladder is connected to a first tube passing through the second bulge.

2. The mouse enema device with a movable anal plug according to claim 1, wherein: The airbag includes an annular airbag wall, one end of which is fixedly connected to the outer side of the first bulge, and the other end of which is fixedly connected to the outer side of the second bulge. ​ When the airbag is in a deflated state, the airbag wall has an inward concave structure, and the airbag wall is in close contact with the axial end face of the first bulge, the radial outer wall of the constricted neck, and the axial end face of the second bulge. When the airbag is inflated, the airbag wall has an outward convex structure, and the airbag wall, together with the axial end face of the first bulge, the radial outer wall of the constricted neck, and the axial end face of the second bulge, form an annular air chamber.

3. The mouse enema device with a movable anal plug according to claim 1, characterized in that: The airbag includes at least three radially arranged annular sub-airbags from the inside out; Adjacent annular sub-airbags are interconnected and connected to the first pipeline.

4. The mouse enema device with a removable anal plug according to claim 1, wherein: The constricted neck has an L-shaped docking channel for connecting the airbag and the first pipeline.

5. The mouse enema device with a removable anal plug according to claim 1, wherein: The first bulge is an annular airbag, which is connected to the ventilation pipe. The ventilation pipe includes a first axial channel opened in the constricted neck and a second axial channel engaged in the second bulge, the first axial channel and the second axial channel being sequentially connected to form the ventilation pipe.

6. The mouse enema device with a removable anal plug according to claim 1, wherein: The anal plug is made of rubber.

7. The mouse enema device with a removable anal plug according to claim 1, wherein: The enema tube is a silicone tube with a sealed front end, an outlet hole on the outer wall of the enema tube, and an inlet for connecting to a syringe at the rear end.

8. The mouse enema device with a removable anal plug according to claim 7, wherein: The front end of the enema tube has a hemispherical structure.

9. The mouse enema device with a removable anal plug according to claim 1, wherein: The enema tube has graduation lines on its outer wall.

10. The mouse enema device with a removable anal plug according to claim 1, wherein: The axial length of the constricted neck is 5 mm; The axial length of the enema tube is 16 cm.

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