Balloon ejection test device
By designing a balloon expulsion test device with an external balloon, a switching component, and a fluid delivery tube, the problems of large size, complex operation, and unstable air medium in existing devices have been solved. This device achieves precise control and stable delivery of sterile water, improving the reliability and ease of use of rectal and anal canal training.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- XIANGYANG TRADITIONAL CHINESE MEDICINE HOSPITAL (XIANGYANG TRADITIONAL CHINESE MEDICINE RES INST)
- Filing Date
- 2025-03-13
- Publication Date
- 2026-07-21
AI Technical Summary
Existing pneumatic anorectal feedback training devices are large in size, complex to operate, and the air medium is unstable and prone to leakage, which affects the training effect.
A balloon expulsion test device was designed, which uses an external balloon, a switching assembly, and a liquid guide tube. Sterile water is used to control the flow of liquid through the switching assembly, which includes a Y-shaped tube and a plunger, to ensure that the liquid flows into the balloon in one direction. Pull rings and buckles are used to improve the ease of operation and stability. The external balloon adopts a double-bag structure to block the diaphragm to control the flow of liquid.
It achieves simple operation and convenient use, with directional and stable liquid delivery, improving the reliability and ease of use of training, reducing patient discomfort, and ensuring training effectiveness.
Smart Images

Figure CN224523087U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of medical consumables technology, specifically to a balloon expulsion test device. Background Technology
[0002] The balloon expulsion test is an auxiliary examination for checking rectal defecation function. It is of great significance for assessing pelvic floor muscle function and rectal sensory function. The balloon expulsion test uses a balloon to simulate feces to test the rectal and anal canal emptying capacity. It has diagnostic value for outlet obstruction constipation and fecal incontinence.
[0003] The prior art, disclosed in utility model CN201642767U, discloses an inflatable anorectal feedback training device. This prior art device requires injecting a medium into a balloon inside the body using a syringe. The syringe is relatively large, requiring ample space and complex operating procedures, which is often inconvenient in practical use. Furthermore, the prior art uses air as a medium, which is easily affected by external pressure when injected into the body, leading to unstable injection volume and potential air leakage, thus affecting the training effect. Utility Model Content
[0004] This invention proposes a balloon expulsion test device, which solves the shortcomings of the prior art, such as inconvenience in operation and insertion into the body.
[0005] The technical solution of this utility model is implemented as follows:
[0006] A balloon expulsion test device includes an external balloon and a switch assembly connected to one end thereon. The end of the switch assembly away from the external balloon is provided with a liquid guide tube, and the end of the liquid guide tube away from the switch assembly is provided with an internal balloon. When the switch assembly is opened, the external balloon is squeezed to allow sterile water to enter the internal balloon, causing it to inflate and be used for anal expulsion training.
[0007] Furthermore, the switching assembly includes a Y-shaped tube with port A, port B, and port C. Port A and port B are respectively connected to the fluid guide tube and the external balloon. A plunger is provided on port C. After the plunger is removed, the sterile water in the internal balloon is discharged through port C, which facilitates the removal of the internal balloon.
[0008] Furthermore, the plunger is provided with a pull ring.
[0009] Furthermore, a buckle is provided on the pipe opening C.
[0010] Furthermore, the extracorporeal balloon is a double-bag type balloon, with a blocking diaphragm between the two bags.
[0011] The beneficial effects of the technical solution provided in this application are as follows:
[0012] This balloon expulsion test device is simple to operate and easy to use. After the patient inserts the balloon into the body, sterile water is squeezed out from the external balloon and introduced into the internal balloon to facilitate expulsion training. After use, the patient can pull out the plunger to expel the sterile water from the internal balloon. Attached Figure Description
[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0014] Figure 1 This is a schematic diagram of the balloon expulsion test device of this utility model;
[0015] Figure 2 This is a partially enlarged schematic diagram of the balloon expulsion test device of this utility model.
[0016] In the diagram: 10 External balloon; 20 Switching assembly; 30 Fluid delivery tube; 40 Internal balloon;
[0017] 21 Y-type tube, 22 plunger, 23 pull ring, 24 snap fastener, 25 tube port A, 26 tube port B, 27 tube port C. Detailed Implementation
[0018] The technical solution of this utility model will be clearly and completely described below with reference to its embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0019] A balloon expulsion testing device includes an external balloon 10 and a switch assembly 20 connected to one end of the external balloon 10. A liquid guide tube 30 is located at the end of the switch assembly 20 away from the external balloon 10, and an internal balloon 40 is located at the end of the liquid guide tube 30 away from the switch assembly 20. When the switch assembly 20 is opened, squeezing the external balloon 10 allows sterile water to enter the internal balloon 40, causing it to inflate and provide expulsion training for anal sphincter. The switch assembly 20, as the control core, precisely manages the flow of sterile water between the external balloon 10 and the internal balloon 40. This design ensures the directionality and stability of liquid delivery. By opening and closing the switch assembly 20, the unidirectional flow of sterile water from the external balloon 10 into the internal balloon 40 is controlled. Specifically, when the external balloon 10 is squeezed, sterile water, under pressure, passes through the switch assembly 20 and the liquid guide tube 30, ultimately entering the internal balloon 40 and inflating it, thereby simulating the stimulation of feces on the rectum and anal canal for anal expulsion training.
[0020] In some embodiments, the switching assembly 20 includes a Y-shaped tube 21 with ports A25, B26, and C27. Ports A25 and B26 are connected to the fluid guide tube 30 and the external balloon 10, respectively. A plunger 22 is provided on port C27. After the plunger 22 is removed, the sterile water in the internal balloon 40 is discharged through port C27, facilitating the removal of the internal balloon 40. The flow of sterile water is controlled by the cooperation of the Y-shaped tube 21 and the plunger 22. During training, the pressure generated by squeezing the external balloon 10 causes the sterile water to pass sequentially through port B26, the Y-shaped tube 21, and the fluid guide tube 30, finally entering the internal balloon 40, causing it to inflate to simulate the stimulation of feces on the rectum and anal canal. When it is necessary to drain the sterile water from the internal balloon 40, the plunger 22 is removed, and the liquid flows out through port C27, thus allowing the internal balloon 40 to be easily removed. This design ensures precise control of fluid flow, improves the reliability and ease of use of the entire training process, and makes it more suitable for the needs of clinical applications.
[0021] In some embodiments, the plunger 22 is provided with a pull ring 23, which provides an easy-to-operate structure, allowing medical personnel to more easily pull out the plunger 22 to control the discharge of sterile water from the intravenous balloon 40. The pull ring 23 design increases the convenience and flexibility of operation, especially when rapid or precise control of fluid discharge is required, effectively improving operational efficiency, reducing patient discomfort, and enhancing the overall user experience.
[0022] In some embodiments, the port C27 is equipped with a latch 24, which functions to prevent liquid backflow into the external balloon 10 after the external balloon 10 is compressed, ensuring that sterile water smoothly enters the internal balloon 40 and maintains its inflated state. This design enhances the unidirectional flow characteristics of the device, avoids inaccurate measurements or poor training results caused by liquid backflow, and improves the reliability and stability of the entire system. When the external balloon 10 is compressed, the latch 24 locks, preventing sterile water from flowing back into the external balloon 10, thereby ensuring the stable inflated state of the internal balloon 40.
[0023] In some embodiments, the extracorporeal balloon 10 is a double-bag balloon with a blocking diaphragm 11 between the two bags. The blocking diaphragm 11 is a key component in the double-bag structure of the extracorporeal balloon 10. It is a flat, thin film with uniform and moderate thickness. It must be able to tightly adhere to the inner wall of the double bags when not compressed, forming an effective seal, and it must be able to rupture and connect the two bags when compressed, without affecting the flow control of the liquid due to excessive stiffness. Its area is sufficient to cover the connection area between the two bags, ensuring the comprehensiveness and reliability of the blocking effect. When the extracorporeal balloon 10 is not compressed, the blocking diaphragm 11 naturally adheres to the two bags, forming a barrier that effectively blocks the flow of liquid between the two bags, preventing backflow or misflow of liquid, and ensuring that the liquid can only flow from one bag to the other along a predetermined path, thereby achieving precise control of the liquid injection volume. When the extracorporeal balloon 10 is compressed, the blocking diaphragm 11 can rupture according to the force and direction of the compression. This rupture allows liquid to flow under pressure from one capsule through the blocking diaphragm 11 to another, enabling staged liquid injection. Under the control of the blocking diaphragm 11, the user can flexibly adjust the amount of liquid injected each time according to actual needs, meeting the requirements for the degree of inflation of the in vivo balloon 40 in different training scenarios.
[0024] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A balloon expulsion testing device, characterized in that, It includes an external balloon (10) and a switch assembly (20) connected to one end thereto. The end of the switch assembly (20) away from the external balloon (10) is provided with a liquid guide tube (30), and the end of the liquid guide tube (30) away from the switch assembly (20) is provided with an internal balloon (40). When the switch assembly (20) is opened, the external balloon (10) is squeezed to allow sterile water to enter the internal balloon (40) and inflate it for use in the anus to expel training fluid.
2. The balloon expulsion testing device as described in claim 1, characterized in that, The switching assembly (20) includes a Y-shaped tube (21), which has a tube port A (25), a tube port B (26) and a tube port C (27). Tube ports A (25) and B (26) are respectively connected to the fluid guide tube (30) and the external balloon (10). A plunger (22) is provided on tube port C (27). After the plunger (22) is removed, the sterile water in the internal balloon (40) is discharged through tube port C (27), which facilitates the removal of the internal balloon (40).
3. The balloon expulsion testing device as described in claim 2, characterized in that, The plunger (22) is provided with a pull ring (23).
4. The balloon expulsion testing device as described in claim 2, characterized in that, The port C (27) is provided with a buckle (24).
5. The balloon expulsion testing device as described in claim 1, characterized in that, The extracorporeal balloon (10) is a double-bag type balloon with a blocking diaphragm (11) between the two bags.