A fecal drainage device with an auxiliary insertion structure
By designing a fecal drainage device with an auxiliary insertion structure, and utilizing the combination of a ring-shaped airbag and a push plate assembly, the problems of difficult insertion and patient discomfort associated with traditional fecal drainage devices are solved, achieving convenient and comfortable fecal management.
Patent Information
- Application Number
- CN202520948602.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-14
- Publication Date
- 2026-11-06
- Estimated Expiration
- 2035-05-14
AI Technical Summary
Traditional fecal drainage devices are difficult to insert, are prone to folding, and require repeated insertion, causing patient discomfort.
A fecal drainage device with an auxiliary insertion structure was designed, including a drainage conduit and a split pusher assembly. The front end of the conduit is provided with an inflatable and deflated annular airbag. The pusher assembly consists of two semi-circular guide plates with an inner diameter matching the conduit. The front end of the guide plates is designed with an arc transition surface to cooperate with the annular airbag for fixation, thereby reducing the insertion diameter.
It improves the ease of insertion, reduces patient pain, lowers catheter insertion resistance, avoids mucosal irritation and perianal skin damage, and enhances operational convenience and hygiene.
Smart Images
Figure CN224937413U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a fecal drainage device with an auxiliary insertion structure, belonging to the field of medical and nursing device technology. Background Technology
[0002] In clinical nursing, fecal drainage devices are core instruments for managing the excrement of incontinent patients (including those who are postoperatively bedridden, in intensive care, or have neurogenic bowel dysfunction). By establishing an internal rectal drainage channel, they can effectively reduce the risk of pressure injuries caused by fecal contamination (incidence rate of approximately 12-18%) and the probability of retrograde infection (reported in the literature as a reduction of more than 37%), which is of great significance for maintaining patient dignity and improving nursing efficiency.
[0003] Traditional fecal drainage devices typically employ a single-lumen silicone catheter, requiring experienced medical staff to insert it through the anus to the rectosigmoid junction (usually 10-15 cm deep). Due to the lack of radial support, the flexible catheter is prone to folding when passing through the high-pressure zone of the anal sphincter (resting pressure 40-70 mmHg), leading to an increased number of repeated insertions (an average of 2.8 times per session). This makes insertion very difficult and causes significant discomfort to the patient, representing a major challenge in current clinical defecation care. Utility Model Content
[0004] This invention provides a fecal drainage device with an auxiliary insertion structure to solve the problems of existing fecal drainage devices being difficult to insert and causing great discomfort to patients.
[0005] To address the aforementioned issues, a fecal drainage device with an auxiliary insertion structure is proposed, comprising a drainage conduit and a split-type insertion push plate assembly. The drainage conduit has an inflatable and deflated annular airbag at its front end and a standardized interface at its end for connecting an extension conduit and a collection container.
[0006] The push plate assembly is a ring structure composed of at least two semi-circular guide plates. Its inner diameter matches the outer diameter of the drainage catheter, and the front end of the guide plate is designed with an arc-shaped transition surface.
[0007] In the aforementioned fecal drainage device, the drainage tube is made of a biocompatible material.
[0008] In the aforementioned fecal drainage device, an anti-backflow valve is provided inside the drainage tube at a distance of 15-20 cm from the air bladder.
[0009] In the aforementioned fecal drainage device, the push plate assembly is composed of two semi-circular guide plates hinged together, with a 45° beveled transition surface designed at the front end of the guide plates.
[0010] In the aforementioned fecal drainage device, the inner diameter of the push plate assembly is less than or equal to the outer diameter of the drainage tube, so that the diameter of the drainage tube is smaller when it is inserted into the anus.
[0011] In the aforementioned fecal drainage device, the thickness of the pusher assembly is less than or equal to 2 mm.
[0012] In the aforementioned fecal drainage device, four guide plates are distributed circumferentially along the drainage conduit. The four guide plates are respectively used to extend into the four circumferentially distributed gaps formed by the connection between the annular airbag and the drainage conduit.
[0013] In the aforementioned fecal drainage device, one end of the drainage conduit is connected to an annular airbag, and the other end is connected to an extension conduit and a collection container. The length of the drainage conduit is greater than 20cm and less than 50cm.
[0014] This utility model also provides a method of using the fecal drainage device with an auxiliary insertion structure, as follows:
[0015] During clinical operation, the assembled push plate assembly is first fitted onto the drainage catheter proximal to the annular balloon. After lubrication, the entire assembly is inserted into the rectum to the predetermined depth. After the annular balloon is inflated and fixed, the push plate assembly is removed and detached.
[0016] In the aforementioned method, when using it, the air inside the annular airbag is first emptied to reduce the volume of the airbag;
[0017] Next, the push plate assembly is assembled and fitted onto the drainage tube, and the push plate assembly is pushed in the direction of the annular airbag so that one end of the push plate assembly extends between the annular airbag and the drainage tube;
[0018] Then, the annular airbag and the front end of the drainage tube are pushed into the designated position inside the anus by the pusher assembly.
[0019] The annular airbag is inflated by the inflation tube that is paired with it, so that the annular airbag is stuck in the anus. Then the push plate assembly is removed separately to complete the insertion of the fecal drainage device.
[0020] Compared with existing technologies, this invention replaces the traditional manual insertion with a designed insertion device, significantly reducing the diameter of the inserted device at the anus, improving insertion convenience while reducing patient pain. Insertion and removal of the device are very convenient. This innovative structure also reduces the resistance of catheter insertion through temporary channel support. Combined with the non-compression fixation technology of the balloon, it can effectively avoid mucosal irritation and perianal skin damage caused by traditional catheter insertion. It is particularly suitable for long-term fecal management in incontinent patients, improving the operation and hygiene level of medical staff, and is suitable for widespread application. Attached Figure Description
[0021] Figure 1This is a flowchart of the usage of this utility model;
[0022] Figure 2 This is a schematic diagram of a fecal drainage device. Detailed Implementation
[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.
[0024] Example 1
[0025] See attached document Figure 1 and attached Figure 2 This embodiment uses a push plate connected to a connecting part to achieve an assembly design, specifically providing a fecal drainage device with an auxiliary insertion structure, including a drainage conduit 1 made of biocompatible material and a split-insertion push plate assembly 2. The push plate assembly 2 is an annular structure composed of two semi-circular guide plates, the inner diameter of which matches the outer diameter of the drainage conduit 1. The front end of the guide plate is designed with an arc transition surface and a thickness of less than or equal to 2mm. One end of the drainage conduit 1 is connected to an annular airbag 3, and the other end is connected to an extension conduit 5 and a collection container 6. The length of the drainage conduit 1 is greater than 20cm and less than 50cm. An anti-backflow valve is provided inside the drainage conduit 1 at a distance of 15-20cm from the airbag. The front end of the drainage conduit 1 is provided with an inflatable and deflated annular airbag 3, and the end is equipped with a standardized interface 4 for connecting the extension conduit 5 and the collection container 6.
[0026] The preferred design is as follows: the push plate assembly 2 is made of two semi-circular guide plates hinged together. The front end of the guide plate is designed with a 45° bevel transition surface. The inner diameter of the push plate assembly 2 is less than or equal to the outer diameter of the drainage tube 1, so that the diameter of the drainage tube 1 is smaller when it is inserted into the anus.
[0027] The above-mentioned fecal drainage device is used as follows:
[0028] During clinical operation, the assembled push plate assembly 2 is first fitted onto the drainage catheter 1 at the proximal end of the annular balloon 3. After lubrication, the entire assembly is inserted into the rectum to the predetermined depth. After the annular balloon 3 is inflated and fixed, the push plate assembly 2 is removed and detached.
[0029] Furthermore, during use, the air inside the annular airbag 3 should be expelled first to reduce the airbag volume;
[0030] Then, the push plate assembly 2 is assembled and fitted onto the drainage tube 1, and the push plate assembly 2 is pushed in the direction of the annular airbag 3 so that one end of the push plate assembly 2 extends between the annular airbag 3 and the drainage tube 1.
[0031] Then, the annular airbag 3 and the front end of the drainage tube 1 are pushed into the designated position inside the anus by the pusher assembly 2.
[0032] The annular airbag 3 is inflated by the inflation tube that is matched with the annular airbag 3, so that the annular airbag 3 is stuck in the anus. Then the push plate assembly 2 is removed and the insertion of the fecal drainage device is completed.
[0033] Example 2
[0034] The difference between this embodiment and embodiment 1 is that: four guide plates are distributed along the circumference of the drainage conduit 1, and the four guide plates are respectively used to extend into the four circumferentially distributed gaps formed by the connection between the annular airbag 3 and the drainage conduit 1.
[0035] Example 3
[0036] The difference between this embodiment and embodiment 1 is that the guide plates are directly or indirectly detachably connected through the connecting part. The guide plate is an arc-shaped plate bent around the circumference of the drainage conduit 1. One end of the guide plate has a smooth curved surface structure. The guide plate and the connecting part fixed thereto are designed as an integral structure, such as integral manufacturing or separate manufacturing and then welding.
[0037] The inner diameter of the ring formed by the four guide plates distributed circumferentially is smaller than the outer diameter of the drainage catheter 1, so as to reduce the diameter of the object inserted into the anus and reduce the difficulty of insertion. The thickness of the guide plates is less than or equal to 2mm, which further makes the diameter of the object inserted into the anus smaller and easier to insert.
[0038] 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 and improvements 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 fecal drainage device having an assisted placement structure, characterized by: It includes a drainage tube (1) and a split-insertion push plate assembly (2). The drainage tube (1) has an inflatable and deflated annular airbag (3) at the front end and a standardized interface (4) at the end. The push plate assembly (2) is an annular structure composed of at least two semi-circular guide plates. Its inner diameter matches the outer diameter of the drainage tube (1), and the front end of the guide plate is designed with an arc transition surface.
2. The fecal drainage device with an assisted placement structure according to claim 1, wherein: The drainage catheter (1) is made of biocompatible material.
3. The fecal drainage device with an assisted placement structure according to claim 1, wherein: The drainage catheter (1) is equipped with an anti-reflux valve 15-20cm away from the air bag.
4. The fecal drainage device with an assisted placement structure according to claim 1, wherein: The push plate assembly (2) is made of two semi-circular guide plates hinged together, and the front end of the guide plate is designed with a 45° bevel transition surface.
5. The fecal drainage device with an assisted placement structure according to claim 1, wherein: The inner diameter of the push plate assembly (2) is less than or equal to the outer diameter of the drainage catheter (1) so that the diameter of the drainage catheter (1) is smaller when it is inserted into the anus.
6. The fecal drainage device with an assisted placement structure according to claim 1, wherein: The thickness of the pusher assembly (2) is less than or equal to 2 mm.
7. The fecal drainage device with an assisted placement structure according to claim 1, wherein: Four guide plates are distributed circumferentially along the drainage conduit (1). The four guide plates are respectively used to extend into the four circumferentially distributed gaps formed by the connection between the annular airbag (3) and the drainage conduit (1).
8. The fecal drainage device with an assisted placement structure according to claim 1, wherein: One end of the drainage tube (1) is connected to the annular airbag (3), and the other end is connected to the extension tube (5) and the collection container (6). The length of the drainage tube (1) is greater than 20cm and less than 50cm.