A water balloon device for recording rat colon movement

Abstract

This utility model relates to the field of experimental apparatus technology, and discloses a water-filled bladder device for recording rat colonic motility. The device includes a polyethylene conduit, with a water-filled bladder movably mounted at the front end of the conduit. A fixing ring is fixedly mounted on the outer wall of one end of the conduit, and a movable collar is movably mounted around the conduit. One end of the movable collar has an installation groove, and a retaining ring is fixedly mounted on one side of the inner wall of the installation groove. Several movable grooves are formed on the outer wall of the conduit. This utility model further secures the water-filled bladder to the front end of the polyethylene conduit using a fixing assembly. The retaining ring is a 1 / 4 arc and elastic, allowing for easier engagement with the fixing ring. Furthermore, the installation groove is larger than the fixing ring, fully accommodating it. These components allow for quick and easy fixation of the water-filled bladder during use, facilitating recording.

Description

Technical Field

[0001] This utility model relates to the field of experimental equipment technology, and in particular to a water sac device for recording rat colonic movement. Background Technology

[0002] In gastrointestinal motility studies, researchers have developed various types of recording devices to accurately record and analyze the movement of the rat colon. Among them, water-filled sac devices are widely used due to their sensitivity to colonic motility and non-invasiveness.

[0003] In practical use, the water bladder usually needs to be cut and then gently fitted onto the polyethylene tubing. To ensure a tight connection between the water bladder and the tubing, the current method is to carefully wrap the lower end of the water bladder with fine thread for fixation. However, when multiple rats need to be recorded in experiments, this manual fixation method is quite cumbersome. Repeating this operation frequently is not only time-consuming and laborious, but also prone to binding errors during the fixation of multiple water bladders, which can affect the accuracy and reliability of experimental data. Utility Model Content

[0004] This utility model addresses the shortcomings of existing technologies by providing the following technical solution: a water-filled bladder device for recording rat colonic motility, comprising a polyethylene conduit, a water-filled bladder movably mounted at the front end of the polyethylene conduit, a fixing ring fixedly mounted on the outer wall of one end of the polyethylene conduit, a movable collar movably mounted around the polyethylene conduit, an installation groove at one end of the movable collar, a retaining ring fixedly mounted on one side of the inner wall of the installation groove, several movable slots I on the outer wall of the polyethylene conduit, a movable block I movably mounted inside the movable slot I, the movable block I fixedly mounted on the inner wall of the movable collar, and a fixing component for further fixing the water-filled bladder installed inside the movable collar.

[0005] As an improvement to the above technical solution, the fixing component includes an elastic element, a second movable groove is provided on the inner side of the mounting groove, the elastic element is installed inside the second movable groove, a second movable block is movably installed at the lower end of the elastic element, an embedded tube is fixedly installed inside the second movable groove below the second movable block, and an embedded groove is provided on the surface of the fixing ring.

[0006] As an improvement to the above technical solution, an elastic band is fixedly provided on the side of the movable collar on the outer wall of the polyethylene conduit, and the two ends of the elastic band are fixedly installed on the outer wall of the polyethylene conduit.

[0007] As an improvement to the above technical solution, the edges of the embedded groove are rounded.

[0008] As an improvement to the above technical solution, the embedded tube is smaller than the embedded groove, and the length of the second movable groove is greater than that of the embedded tube.

[0009] The beneficial effects of this utility model are as follows: A fixing ring is fixedly installed on the outer wall of one end of the polyethylene conduit, which can initially fix the water bag to the front end of the polyethylene conduit. A movable collar is movably installed on the periphery of the polyethylene conduit. An installation groove is opened at one end of the movable collar. A retaining ring is fixedly installed on one side of the inner wall of the installation groove. Several movable grooves are opened on the outer wall of the polyethylene conduit. A movable block is movably installed inside the movable groove. When the movable collar moves forward, it can lock the retaining ring at the front end of the fixing ring, thus fixing the water bag to the periphery of the polyethylene conduit. The movable block is fixedly installed on the inner wall of the movable collar. A fixing component is installed inside the movable collar to further fix the water bag. The fixing component further fixes the water bag to the front end of the polyethylene conduit. The retaining ring is a 1 / 4 arc and has elasticity, which can more easily lock with the fixing ring. The size of the installation groove is larger than that of the fixing ring, which can fully accommodate the fixing ring. The above components can quickly fix the water bag during use, so as to facilitate recording. Attached Figure Description

[0010] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0011] Figure 2 This is a three-dimensional structural cross-sectional view of the present invention;

[0012] Figure 3 This utility model Figure 2 Enlarged view of point A in the middle.

[0013] Reference numerals: 10, polyethylene conduit; 11, water bladder; 12, elastic band; 20, fixing ring; 21, movable collar; 211, mounting groove; 22, retaining ring; 23, movable groove one; 24, movable block one; 25, movable groove two; 26, elastic element; 27, movable block two; 28, embedded tube; 29, embedded groove. Detailed Implementation

[0014] To make the objectives, technical solutions, and advantages of this utility model clearer, the following provides a more detailed description of the utility model. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of the utility model.

[0015] Please see Figure 1-3This utility model provides a technical solution: a water bladder device for recording rat colonic motility, including a polyethylene conduit 10, a water bladder 11 movably mounted at the front end of the polyethylene conduit 10, a fixing ring 20 fixedly mounted on the outer wall of one end of the polyethylene conduit 10, a movable collar 21 movably mounted around the polyethylene conduit 10, an installation groove 211 opened at one end of the movable collar 21, a retaining ring 22 fixedly mounted on one side of the inner wall of the installation groove 211, a plurality of movable grooves 23 opened on the outer wall of the polyethylene conduit 10, movable blocks 24 movably mounted inside the movable grooves 23, the movable blocks 24 fixedly mounted on the inner wall of the movable collar 21, and a fixing component for further fixing the water bladder 11 installed inside the movable collar 21.

[0016] In this embodiment, a fixing ring 20 is fixedly installed on the outer wall of one end of the polyethylene conduit 10, which can initially fix the water bag 11 to the front end of the polyethylene conduit 10. A movable collar 21 is movably installed around the polyethylene conduit 10. One end of the movable collar 21 has an installation groove 211. A retaining ring 22 is fixedly installed on one side of the inner wall of the installation groove 211. Several movable grooves 23 are opened on the outer wall of the polyethylene conduit 10. Movable blocks 24 are movably installed inside the movable grooves 23, which can make the retaining ring 22 lock the front end of the fixing ring 20 when the movable collar 21 moves forward, thus securing the water bag. 11 is fixed to the outer periphery of the polyethylene conduit 10. The movable block 24 is fixedly installed on the inner wall of the movable collar 21. The movable collar 21 is equipped with a fixing component for further fixing the water bladder 11. The fixing component further fixes the water bladder 11 to the front end of the polyethylene conduit 10. The retaining ring 22 is a 1 / 4 arc and is elastic, which can more easily engage with the fixing ring 20. The size of the mounting groove 211 is larger than that of the fixing ring 20, which can fully accommodate the fixing ring 20. The above components can quickly fix the water bladder 11 during use, so as to facilitate recording.

[0017] Specifically, the fixing component includes an elastic element 26, a movable groove 25 is provided on the inner side of the mounting groove 211, the elastic element 26 is installed inside the movable groove 25, a movable block 27 is movably installed at the lower end of the elastic element 26, an embedded tube 28 is fixedly installed inside the movable groove 25 below the movable block 27, and an embedded groove 29 is provided on the surface of the fixing ring 20.

[0018] In this embodiment, the fixing component includes an elastic element 26. A movable groove 25 is provided on the inner side of the mounting groove 211. The elastic element 26 is installed inside the movable groove 25. A movable block 27 is movably installed at the lower end of the elastic element 26. An embedded tube 28 is fixedly installed inside the movable groove 25 below the movable block 27. An embedded groove 29 is provided on the surface of the fixing ring 20. When the movable collar 21 moves forward, after the retaining ring 22 is locked with the fixing ring 20, the embedded tube 28 can be locked into the embedded groove 29, which can further fix the water bag 11. The elastic element 26 presses down the movable block 27 through the spring and the fixing post. The movable block 27 is movably sleeved on the outside of the fixing post to ensure that the embedded tube 28 is stably locked into the embedded groove 29, thus ensuring the stability of the water bag 11.

[0019] Specifically, an elastic band 12 is fixedly installed on the outer wall of the polyethylene conduit 10 on the side of the movable collar 21, and both ends of the elastic band 12 are fixedly installed on the outer wall of the polyethylene conduit 10.

[0020] In this embodiment, an elastic band 12 is fixedly installed on the side of the movable collar 21 through the outer wall of the polyethylene conduit 10. The two ends of the elastic band 12 are fixedly installed on the outer wall of the polyethylene conduit 10, so that after the water bag 11 is fixed inside the rat's anus, the polyethylene conduit 10 is fixed to the rat's tail through the elastic band 12, ensuring the normal operation of the device.

[0021] Specifically, the edges of the embedded groove 29 are rounded.

[0022] In this embodiment, the corners of the surface of the embedding groove 29 are rounded, which makes it easier for the embedding tube 28 to be embedded into the interior of the embedding groove 29.

[0023] Specifically, the embedded tube 28 is smaller than the embedded groove 29, and the length of the movable groove 25 is greater than that of the embedded tube 28.

[0024] In this embodiment, by making the embedded tube 28 smaller than the embedded groove 29, the embedded tube 28 can be stably embedded inside the embedded groove 29, avoiding the two from touching each other and affecting their fixing effect. At the same time, the length of the moving groove 25 is greater than the embedded tube 28, so that the embedded tube 28 can move upward stably when the water bag 11 needs to be removed after recording, ensuring that the water bag 11 can be removed normally.

[0025] In use, the water sac 11 has a diameter of approximately 0.5 cm and a length of approximately 0.6 cm. Then, pure water is injected into the water sac 11 to ensure it is full of liquid, while simultaneously removing all gas from the sac and tubing. Finally, the polyethylene tubing 10 is tightly connected to the gastrointestinal motility transducer via a medical three-way valve. In the chart recording system, the sampling frequency is set to 1 kHz, the low-pass filter of the bridge amplification channel is set to 10 Hz, and the low-pass filter of the digital filter is set to 1 Hz. Before the experiment, ensure the gastrointestinal transducer is full of pure water and adjust the medical three-way valve to the open-atmosphere state. Then, the equipment is zeroed. A 10% urethane solution is used to treat the rats. Intraperitoneal anesthesia was administered at a dose of 1-1.2 g / kg. When pain stimulation was applied to the rat's hind limbs using toothed forceps, the rats did not exhibit a pain reflex response, but the corneal reflex remained. If hind limb contraction occurred during acupuncture and electroacupuncture, urethane was administered as needed to maintain the animal in a stable anesthetized state. Simultaneously, an animal thermostat was used to maintain the rat's body temperature at approximately 39°C during the experiment. Then, approximately 0.1 mL of pure water was injected into the colonic water sac 11, and the baseline pressure of the water sac 11 was adjusted to the baseline. Subsequently, contraction waves of colonic motility appeared. During the process from the injection of pure water to stabilization, the amplitude of distal colonic contraction gradually increased, and the motility stabilized after approximately 30 minutes.

[0026] The above embodiments are only used to illustrate the technical solution of this utility model, and are not intended to limit it.

Claims

1. A water-filled sac device for recording rat colonic motility, comprising a polyethylene conduit (10), wherein a water-filled sac (11) is movably mounted at the distal end of the polyethylene conduit (10), characterized in that: A fixing ring (20) is fixedly provided on the outer wall of one end of the polyethylene conduit (10). A movable collar (21) is movably installed around the polyethylene conduit (10). An installation groove (211) is opened at one end of the movable collar (211). A retaining ring (22) is fixedly provided on one side of the inner wall of the installation groove (211). Several movable grooves (23) are opened on the outer wall of the polyethylene conduit (10). A movable block (24) is movably installed inside the movable groove (23). The movable block (24) is fixedly installed on the inner wall of the movable collar (21). A fixing component for further fixing the water bladder (11) is installed inside the movable collar (21).

2. The water balloon device of claim 1, wherein: The fixing component includes an elastic element (26), a movable groove two (25) is provided on the inner side of the mounting groove (211), the elastic element (26) is installed inside the movable groove two (25), a movable block two (27) is movably installed at the lower end of the elastic element (26), an embedded tube (28) is fixedly installed inside the movable groove two (25) below the movable block two (27), and an embedded groove (29) is provided on the surface of the fixing ring (20).

3. The water balloon device of claim 1, wherein: An elastic band (12) is fixedly provided on the outer wall of the polyethylene conduit (10) on the side of the movable collar (21), and the two ends of the elastic band (12) are fixedly installed on the outer wall of the polyethylene conduit (10).

4. The water-filled balloon device of claim 2, wherein: The edges of the embedded groove (29) are rounded.

5. The water-filled balloon device of claim 2, wherein: The embedded tube (28) is smaller than the embedded groove (29), and the length of the second movable groove (25) is greater than that of the embedded tube (28).

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