Acites stomach drainage support

Abstract

The ascites stomach drainage support comprises a drainage channel, and a one-way valve body structure used for draining ascites into a gastral cavity in a one-way mode is arranged in the drainage channel. The one-way valve body structure comprises a conical flow guide head, a flow guide opening is formed in the end of the conical flow guide head, a supporting rubber sleeve is arranged in a drainage channel on one side of the conical flow guide head, an integrally-formed sealing gasket is arranged in the supporting rubber sleeve, and the sealing gasket is attached to the outer surface of the conical flow guide head. Four tearing seams are formed in the center of the sealing gasket at equal intervals, the sealing gasket is divided into four sealing petals by the tearing seams, and the sealing petals are all connected with the flow guide opening through an automatic adjusting assembly; the two sides of the drainage channel are each provided with a gastral cavity tail hook structure and an abdominal cavity tail hook structure, the gastral cavity tail hook structures and the abdominal cavity tail hook structures are used for positioning the drainage channel, ascites in the abdominal cavity can be drained into the gastral cavity, multiple times of puncture or external drainage of a patient can be avoided, contained objects in the gastral cavity cannot reversely flow into the abdominal cavity, and drainage safety is guaranteed.

Description

Technical Field

[0001] This utility model belongs to the field of medical device technology, specifically relating to a gastric drainage stent for ascites. Background Technology

[0002] Ascites, a condition characterized by fluid accumulation within the abdominal cavity, can occur in cases of cirrhosis or peritoneal seeding diseases (peritoneal metastases): metastases from cancers such as stomach, colorectal, pancreatic, or ovarian cancer to the peritoneum. Ascites symptoms worsen, patients experience discomfort, pain, and limited mobility due to abdominal distension. Most patients with ascites require repeated drainage or external abdominal drainage tubes to remove the ascites.

[0003] The utility model disclosed in patent application CN221513041U discloses a pleural effusion and ascites puncture drainage tube, comprising: a drainage tube body, wherein an end of the drainage tube body is provided with a water-filled bladder for fixing the drainage tube body, and an auxiliary component for controlling the state of the water-filled bladder is provided inside the drainage tube body; the auxiliary component includes a first through hole, a second through hole and an internal tube, wherein the first through hole is formed on the drainage tube body and the second through hole is formed on the internal tube. This approach involves placing a water-filled balloon on the drainage tube. After insertion, a small amount of saline solution can be injected into the end of the tube with a syringe to inflate the balloon. This expands the end of the drainage tube, preventing it from dislodging from the puncture site even if the sutures break, thus avoiding the need for re-puncture and increasing the lifespan and safety of the drainage tube. However, these drainage tubes are mostly single-use, requiring puncture for each use and repeated drainage or insertion of an external abdominal drainage tube, causing inconvenience and discomfort for the patient. Furthermore, they lack a unidirectional drainage structure, making them prone to ascites reflux and affecting safety. Therefore, we propose an ascites gastric drainage stent. Utility Model Content

[0004] The purpose of this invention is to provide a gastric drainage stent for ascites, in order to solve the problems mentioned in the background art. Currently, drainage tubes are mostly disposable, requiring puncture for each use, repeated drainage, or insertion of an external abdominal drainage tube, which causes inconvenience and discomfort to patients. In addition, they lack a unidirectional drainage structure, which can easily cause ascites backflow and affect the safety of use.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an ascites gastric drainage stent, including a drainage channel, wherein a one-way valve structure for unidirectionally draining ascites into the gastric cavity is provided in the drainage channel;

[0006] The one-way valve body structure includes a conical guide head, which is disposed in the flow channel. A flow port is provided at the end of the conical guide head. A support sleeve is provided in the flow channel on one side of the conical guide head. An integrally formed sealing gasket is provided in the support sleeve. The sealing gasket is attached to the outer surface of the conical guide head. Four tear slits are provided at equal intervals at the center of the sealing gasket. The tear slits divide the sealing gasket into four sealing petals. Each sealing petal is connected to the flow port through an automatic adjustment component.

[0007] The drainage channel is provided with gastric caudal hook structures and abdominal caudal hook structures on both sides for positioning the drainage channel.

[0008] Preferably, the end of the tear is located at the outer diameter of the guide port, which avoids the sealing flap from expanding too much and causing poor sealing.

[0009] Preferably, the automatic adjustment component includes a first connecting part and a second connecting part. The first connecting part is disposed on the inner surface of the sealing flap. The first connecting part is rotatably mounted on a first rotating shaft, and a first adjusting part is disposed on the first rotating shaft. The second connecting part is disposed on the inner wall of the guide port. The second connecting part is rotatably mounted on a second rotating shaft, and a second adjusting part is disposed on the second rotating shaft. The angles of the first adjusting part and the second adjusting part can be automatically adjusted when the sealing flap is unfolded.

[0010] Preferably, a constant force spring is provided at one end of the first adjustment part, and the other end of the constant force spring is connected to the second adjustment part, which can reset and move the sealing flap and automatically seal the drainage channel.

[0011] Preferably, all the sealing flaps are arc-shaped structures, and when the four sets of sealing flaps are closed, they form a complete conical structure, which improves the sealing performance of the conical guide head.

[0012] Preferably, the gastric caudal hook structure has the same overall structure as the abdominal caudal hook structure.

[0013] Preferably, the gastric tail hook structure includes a tail hook coil, which is disposed at both ends of the drainage channel and is integrally formed with the drainage channel.

[0014] Preferably, a flow channel is provided inside the tail hook coil, and a drain port is provided on the side of the tail hook coil, and the drain port is connected to the flow channel, which can locate the position of the drainage channel in the stomach cavity.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] (1) This utility model can build an ascites channel between the stomach cavity and the abdominal cavity and drain the ascites in the abdominal cavity into the stomach cavity. The built-in automatic drainage can avoid the patient from multiple punctures or external drainage, and can effectively reduce the patient's pain.

[0017] (2) This utility model can drain ascites into the stomach cavity in one direction, and the contents of the stomach cavity will not flow back into the abdominal cavity, thus ensuring the safety of ascites drainage. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a schematic diagram of a half-section of the present invention;

[0020] Figure 3 for Figure 2 Enlarged structural diagram at point A;

[0021] Figure 4 This is a right-side view of the supporting rubber sleeve in this utility model.

[0022] Figure 5 This is a schematic diagram of the structure of the sealing flap unfolding when ascites is drained into the gastric cavity in this utility model;

[0023] Figure 6 This is a half-sectional schematic diagram of the gastric caudal hook structure in this utility model;

[0024] In the diagram: 1. Drainage channel; 2. Gastric caudal hook structure; 3. Abdominal caudal hook structure; 11. Support sleeve; 12. Conical guide head; 13. Drainage port; 14. Sealing flap; 15. Sealing gasket; 16. Tear seam; 21. Caudal hook coil; 22. Drainage channel; 23. Drainage port; 101. Second connecting part; 102. Second rotating shaft; 103. Second adjusting part; 104. Constant force spring; 105. First adjusting part; 106. First connecting part; 107. First rotating shaft. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figures 1-5 This utility model provides a technical solution: an ascites gastric drainage stent, including a drainage channel 1, and a one-way valve structure for unidirectionally draining ascites into the gastric cavity within the drainage channel 1;

[0027] The one-way valve body structure includes a conical guide head 12, which is disposed in the flow channel 1. A flow port 13 is provided at the end of the conical guide head 12. A support sleeve 11 is provided in the flow channel 1 on one side of the conical guide head 12. An integrally formed sealing gasket 15 is provided in the support sleeve 11. The sealing gasket 15 is attached to the outer surface of the conical guide head 12. Four tear slits 16 are provided at equal intervals at the center of the sealing gasket 15. The tear slits 16 divide the sealing gasket 15 into four sealing petals 14. Each sealing petal 14 is connected to the flow port 13 through an automatic adjustment component.

[0028] The automatic adjustment assembly includes a first connecting part 106 and a second connecting part 101. The first connecting part 106 is disposed on the inner surface of the sealing flap 14. A first rotating shaft 107 is rotatably disposed on the first connecting part 106. A first adjusting part 105 is disposed on the first rotating shaft 107. The second connecting part 101 is disposed on the inner wall of the guide port 13. A second rotating shaft 102 is rotatably disposed inside the second connecting part 101. A second adjusting part 103 is disposed on the second rotating shaft 102. The angles of the first adjusting part 105 and the second adjusting part 103 can be automatically adjusted when the sealing flap 14 is unfolded.

[0029] A constant force spring 104 is provided at one end of the first adjustment part 105, and the other end of the constant force spring 104 is connected to the second adjustment part 103, which can reset and move the sealing flap 14 and automatically seal the drainage channel 1.

[0030] First, using a gastrointestinal endoscope, the gastric tail hook structure 2 is fixed to the stomach wall, while the drainage channel 1 is extended into the abdominal cavity. Normal abdominal pressure is 0-5 mmHg; however, when ascites occurs, the pressure increases. When the intra-abdominal pressure exceeds 7 mmHg, the ascites pressure compresses the sealing flap 14, causing it to unfold along the tear seam 16. Simultaneously, the unfolding of the sealing flap 14 moves the first connecting part 106, causing the first adjusting part 105 to rotate within the second connecting part 101 via the first rotating shaft 107. At the same time, the first adjusting part 105 stretches the constant force spring 104, and the second adjusting part 103 rotates within the second connecting part 101 via the second rotating shaft 102. Once the sealing flap 14 unfolds, the ascites is transported into the stomach cavity through the drainage channel 1 and the conical guide head 12, achieving ascites drainage through the stomach cavity and reducing the need for multiple punctures, thus minimizing harm to the patient.

[0031] After the ascites drainage is completed, the four sets of sealing flaps 14 automatically close under the automatic reset action of the sealing flaps 14 and the constant force spring 104, sealing the conical guide head 12 and realizing unidirectional drainage of the ascites.

[0032] Furthermore, the end of the tear slit 16 is located at the outer diameter of the guide port 13, which avoids the sealing flap 14 from expanding too much and causing poor sealing.

[0033] Furthermore, all sealing flaps 14 are arc-shaped structures, which increases the fit between the sealing flaps 14 and the outer surface of the conical guide head 12. When the four sets of sealing flaps 14 are closed, they form a complete conical structure, which improves the sealing performance of the conical guide head 12.

[0034] As a specific embodiment of this application, please refer to Figure 6 Both sides of the drainage channel 1 are provided with a gastric tail hook structure 2 and an abdominal tail hook structure 3. The gastric tail hook structure 2 and the abdominal tail hook structure 3 have the same overall structure. The gastric tail hook structure 2 includes a tail hook coil 21. The tail hook coil 21 is set at both ends of the drainage channel 1 and is integrally formed with the drainage channel 1. A guide channel 22 is set inside the tail hook coil 21. A drain port 23 is set on the side of the tail hook coil 21 and the drain port 23 is connected to the guide channel 22, which can locate the position of the drainage channel 1 in the gastric cavity.

[0035] During the insertion of the drainage channel 1, the tail hook coil 21 can be fitted to the inner wall of the stomach cavity, thereby positioning the insertion position of the drainage channel 1 and preventing the drainage channel 1 from shifting during use. At the same time, during the drainage of ascites, the drainage channel 22 guides the ascites and delivers it to the stomach cavity through the drainage port 23.

[0036] In this application, the drainage channel 1 and the tail hook coil 21 can both be made of PE material, and the support sleeve 11 and the sealing flap 14 can both be made of silicone material.

[0037] Although embodiments of the present 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 present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An ascites gastric drainage stent, comprising a drainage channel (1), characterized in that: The drainage channel (1) is provided with a one-way valve structure for one-way drainage of ascites into the stomach cavity; The one-way valve body structure includes a conical guide head (12), which is disposed in the drainage channel (1). A guide port (13) is provided at the end of the conical guide head (12). A support sleeve (11) is provided in the drainage channel (1) on one side of the conical guide head (12). An integrally formed sealing gasket (15) is provided in the support sleeve (11). The sealing gasket (15) is attached to the outer surface of the conical guide head (12). Four tear slits (16) are equidistantly provided at the center of the sealing gasket (15). The tear slits (16) divide the sealing gasket (15) into four sealing petals (14). Each sealing petal (14) is connected to the guide port (13) through an automatic adjustment component. The drainage channel (1) is provided with a gastric caudal hook structure (2) and an abdominal caudal hook structure (3) on both sides for positioning the drainage channel (1).

2. The ascites gastric drainage stent according to claim 1, characterized in that: The end of the tear (16) is located at the outer diameter position of the guide port (13).

3. The ascites gastric drainage stent according to claim 1, characterized in that: The automatic adjustment component includes a first connecting part (106) and a second connecting part (101). The first connecting part (106) is disposed on the inner surface of the sealing flap (14). The first connecting part (106) is rotatably disposed on a first rotating shaft (107). A first adjusting part (105) is disposed on the first rotating shaft (107). The second connecting part (101) is disposed on the inner wall of the guide port (13). A second rotating shaft (102) is rotatably disposed inside the second connecting part (101). A second adjusting part (103) is disposed on the second rotating shaft (102).

4. The ascites gastric drainage stent according to claim 3, characterized in that: A constant force spring (104) is provided at one end of the first adjustment part (105), and the other end of the constant force spring (104) is connected to the second adjustment part (103).

5. The ascites gastric drainage stent according to claim 1, characterized in that: All the sealing flaps (14) are arc-shaped structures, and the four sets of sealing flaps (14) form a complete conical structure when closed.

6. The ascites gastric drainage stent according to claim 1, characterized in that: The gastric caudal hook structure (2) has the same overall structure as the abdominal caudal hook structure (3).

7. The ascites gastric drainage stent according to claim 6, characterized in that: The gastric cavity tail hook structure (2) includes a tail hook coil (21), which is set at both ends of the drainage channel (1) and is integrally formed with the drainage channel (1).

8. The ascites gastric drainage stent according to claim 7, characterized in that: The tail hook coil (21) is provided with a flow channel (22), and the tail hook coil (21) is provided with a drain port (23) on the side, and the drain port (23) is connected to the flow channel (22).

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