Drainage device for oral and maxillofacial cyst fenestration

By designing a drainage device for oral and maxillary cyst fenestration surgery that includes a silicone tubing and a deformable hollow sphere, the problems of inconvenient adjustment of saline diameter and inconvenience of filter installation and removal were solved, improving patient comfort and ease of use.

CN224540673UActive Publication Date: 2026-07-24THE THIRD AFFILIATED HOSPITAL OF SUN YAT SEN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
THE THIRD AFFILIATED HOSPITAL OF SUN YAT SEN UNIV
Filing Date
2025-04-27
Publication Date
2026-07-24

AI Technical Summary

Technical Problem

Existing drainage devices for oral and maxillary cyst fenestration surgery are not convenient for adjusting the diameter of the saline spray, and the filter screen is inconvenient to install and remove, affecting patient comfort.

Method used

A drainage device comprising a silicone tubing, a fixing ring, a connecting ring, a partition plate, a placement ring, a filter screen, a knob, a limiting block, and a hollow sphere is designed. By adjusting the deformation of the hollow sphere and the sliding connection of the limiting block in the L-shaped groove, the diameter of the saline solution can be flexibly adjusted, and the filter screen can be easily disassembled and assembled.

Benefits of technology

It enables flexible adjustment of the saline spray diameter, improves patient comfort, simplifies the filter installation and removal process, and enhances the patient experience.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses an oral cavity jaw bone cyst fenestration operation uses drainage device, including silica gel hose and fixed ring, the fixed ring is installed on the outer wall of silica gel hose, the outer wall of fixed ring is installed with the connecting ring, the inside installation of silica gel hose has the partition board, and the inside of silica gel hose is separated into two passages with partition board, the top of silica gel hose is installed with the placement ring, the inside of placement ring is provided with filter screen, the top of filter screen is installed with knob, the outer wall of filter screen is installed with four sets of spacing limit block, the inner wall of placement ring is installed with four sets of spacing L type slot, and limit block and L type slot sliding connection. The utility model not only has realized the convenient flexible adjustment physiological saline jet's diameter, has made things convenient for the quick dismounting of filter screen to the outside, and has improved the comfort degree of patient use, can place in the window operation, has reduced the patient hospital visit frequency, has improved patient comfort and acceptance degree.
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Description

Technical Field

[0001] This utility model relates to the field of drainage device technology, specifically a drainage device for fenestration surgery of oral and maxillary cysts. Background Technology

[0002] For jawbone cyst surgery, clinicians tend to favor conservative treatment, often employing fenestration decompression to drain the cyst fluid, release intracystic pressure, interrupt the cyst's expansive growth, reduce anaerobic bacterial infection, induce centripetal contraction of the cyst wall's fibrous connective tissue, promote reparative new bone formation, shrink the cyst cavity, and cause changes in the cyst wall epithelium resembling oral mucosal epithelium. Postoperatively, it is necessary to maintain the patency of the stoma for a long period to ensure continuous drainage of the cyst fluid. Traditional drainage methods often involve using a plug, which can lead to a poor patient experience and inconvenience in daily life when worn for extended periods. To improve this situation, a drainage device for oral and jawbone cyst fenestration surgery has been proposed.

[0003] As disclosed in patent announcement number CN219231137U, a jawbone cyst plugging device includes a drainage device and an expansion device; the drainage device has openings at both ends to form a through channel for connecting the cyst cavity and the patient's oral cavity; the expansion device is made of a deformable material and is connected to the drainage device; the expansion device is disposed in the cyst cavity and the plugging device is fixed in the cyst cavity by increasing its volume; the expansion device increases its volume by filling it with gas or liquid.

[0004] While this device minimizes additional damage to patients, provides greater comfort, and has a relatively simple overall structure without affecting treatment, it does not solve the problems of existing drainage devices that hinder convenient and flexible adjustment of the saline spray diameter and make quick disassembly and assembly of the filter, thus affecting patient comfort. Utility Model Content

[0005] The purpose of this invention is to provide a drainage device for oral and maxillary cyst fenestration surgery, in order to solve the problems mentioned in the background art, such as the inconvenience of adjusting the diameter of the saline spray, the difficulty in quickly disassembling and assembling the filter, and the impact on the patient's comfort.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a drainage device for fenestration surgery of oral and maxillary cysts, comprising a silicone tube and a fixing ring. The fixing ring is installed on the outer wall of the silicone tube, and a connecting ring is installed on the outer wall of the fixing ring. A partition plate is installed inside the silicone tube, dividing the interior of the silicone tube into two channels. A placement ring is installed at the top of the silicone tube, and a filter screen is provided inside the placement ring. A knob is installed at the top of the filter screen. Four sets of equally spaced limiting blocks are installed on the outer wall of the filter screen. Four sets of equally spaced L-shaped grooves are installed on the inner wall of the placement ring, and the limiting blocks are slidably connected to the L-shaped grooves.

[0007] Preferably, a connector is provided at the bottom of the silicone tubing, and the connector can be inserted into the inside of the silicone tubing.

[0008] Preferably, a hollow sphere is installed at the bottom end of the connector, and a limit ring is provided on the outer wall of the hollow sphere.

[0009] Preferably, the surface of the inner hollow sphere is provided with an outer hollow sphere, and the diameter of the holes on the surface of the outer hollow sphere is equal to the diameter of the holes on the surface of the inner hollow sphere.

[0010] Preferably, the outer hollow sphere is slidably connected to the limiting ring, and the material used in the device is uniform silicone.

[0011] Compared with the prior art, the beneficial effects of this utility model are: the drainage device not only realizes the convenient and flexible adjustment of the diameter of the saline spray and facilitates the quick disassembly and assembly of the filter screen, but also improves the comfort of the patient.

[0012] (1) Flatten the inner hollow sphere and insert it into the outer hollow sphere. The inner hollow sphere expands and returns to its original shape inside the outer hollow sphere, so that the inner wall of the inner hollow sphere contacts the inner wall of the outer hollow sphere. Because the inner wall of the cyst cavity is relatively fragile after surgery, to avoid causing discomfort to the patient during irrigation, rotate the outer hollow sphere at this time to make the holes on the surface of the outer hollow sphere misalign with the holes on the surface of the inner hollow sphere, thereby reducing the diameter of the sprayed saline solution to avoid discomfort to the patient due to an excessively large saline solution diameter. Then take the connector and insert it into the water inlet channel inside the silicone tube. Insert the entire device into the cyst cavity and use the connecting ring to cooperate with the elastic buckle bonded to the tooth surface to achieve the purpose of fixing it to the tooth surface. Then align the limiting block with the L-shaped groove, press the filter screen, and the filter screen will drive the limiting block in the L-shaped groove. The device moves within the groove. When the limiting block moves to the turning point of the L-shaped groove, turn the knob. The knob will rotate the filter and the limiting block, locking the limiting block inside the L-shaped groove. This allows the filter to be installed inside the placement ring, preventing food from entering the silicone tube. To remove the filter, simply repeat the above steps. Then, take the syringe, insert the needle through the filter, and inject saline solution into the inlet channel. The saline solution passes through the silicone tube and the inner hollow sphere, then sprays out from the outer hollow sphere, cleaning the inside of the cavity. The cleaned liquid drains out through the outlet channel inside the silicone tube, thus completing the drainage process. This allows for convenient and flexible adjustment of the saline spray diameter, facilitates quick installation and removal of the filter, and improves patient comfort. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0014] Figure 2 This is a three-dimensional exploded structure diagram of the present invention;

[0015] Figure 3 This is a three-dimensional perspective structural diagram of the silicone hose of this utility model;

[0016] Figure 4 This is a three-dimensional structural diagram of the filter screen of this utility model;

[0017] Figure 5 This is a three-dimensional structural diagram of the inner and outer hollow spheres of this utility model;

[0018] Figure 6 This is a diagram showing the fit between the connecting ring and the toothed locking mechanism of this utility model.

[0019] Figure 7 This is a schematic diagram of another connection method between the connecting ring and the fixing ring according to this utility model.

[0020] In the diagram: 1. Silicone hose; 2. Fixing ring; 4. Connecting ring; 5. Placement ring; 6. Filter screen; 7. Knob; 8. Divider plate; 9. Connector; 10. Limiting block; 11. L-shaped groove; 12. Limiting ring; 13. Outer hollow sphere; 14. Inner hollow sphere. Detailed Implementation

[0021] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0022] Please see Figure 1-7 This utility model provides an embodiment of a drainage device for oral and maxillary cyst fenestration surgery, including a silicone tube 1 and a fixing ring 2. The fixing ring 2 is installed on the outer wall of the silicone tube 1, and a connecting ring 4 is installed on the outer wall of the fixing ring 2. The connecting ring 4 can be connected to the outer surface of the fixing ring 2 by means of a door lock structure or directly fixed, or other fixing methods can be used for connection. The lock structure is common knowledge that can be obtained by those skilled in the art, and will not be described in detail here. A partition plate 8 is installed inside the silicone tube 1, and the partition plate 8 divides the inside of the silicone tube 1 into two channels. A placement ring 5 is installed at the top of the silicone tube 1, and a filter screen 6 is provided inside the placement ring 5. A knob 7 is installed at the top of the filter screen 6. Four sets of equal-spaced limiting blocks 10 are installed on the outer wall of the filter screen 6, and four sets of equal-spaced L-shaped grooves 11 are installed on the inner wall of the placement ring 5, and the limiting blocks 10 and the L-shaped grooves 11 are slidably connected.

[0023] A connector 9 is provided at the bottom of the silicone tube 1, and the connector 9 can be inserted into the inside of the silicone tube 1. An inner hollow sphere 14 is installed at the bottom end of the connector 9, and a limit ring 12 is provided on the outer wall of the inner hollow sphere 14.

[0024] The surface of the inner hollow sphere 14 is provided with an outer hollow sphere 13, and the diameter of the hole on the surface of the outer hollow sphere 13 is equal to the diameter of the hole on the surface of the inner hollow sphere 14. The outer hollow sphere 13 is slidably connected to the limiting ring 12, and the material used in this device is uniform silicone.

[0025] Flatten the inner hollow sphere 14 and insert it into the outer hollow sphere 13. The inner hollow sphere 14 expands and returns to its original shape inside the outer hollow sphere 13, bringing it into contact with the inner wall of the outer hollow sphere 13. Since the inner wall of the cyst cavity is relatively fragile immediately after surgery, to avoid discomfort to the patient during irrigation, rotate the outer hollow sphere 13. The limiting ring 12 provides support for the movement of the outer hollow sphere 13, causing the holes on the surface of the outer hollow sphere 13 to misalign with the holes on the surface of the inner hollow sphere 14. This reduces the diameter of the sprayed saline solution, preventing discomfort to the patient due to an excessively large saline solution diameter. Then, take the connector 9 and insert it into the water inlet channel inside the silicone tubing 1. Insert the entire device into the cyst cavity. Use the connecting ring 4 in conjunction with the elastic buckle bonded to the tooth surface to fix it to the tooth surface. Then, align the limiting block 10 with the L-shaped groove 11 and press the filter screen 6 to allow the filter to pass through. The filter screen 6 moves the limiting block 10 inside the L-shaped groove 11. When the limiting block 10 moves to the turning position of the L-shaped groove 11, the knob 7 is turned, which drives the filter screen 6 and the limiting block 10 to rotate, thereby locking the limiting block 10 inside the L-shaped groove 11. This allows the filter screen 6 to be installed inside the placement ring 5, preventing food from entering the silicone tube 1. When the filter screen 6 needs to be removed, the above operation is repeated in reverse to quickly remove it. Then, the syringe is taken, the needle is inserted through the filter screen 6, and saline solution is injected into the water inlet channel. The saline solution is sprayed out from the outer hollow sphere 13 through the silicone tube 1 and the inner hollow sphere 14, cleaning the inside of the bladder cavity. The cleaned liquid is discharged from the water outlet channel inside the silicone tube 1, thus completing the drainage work. This allows for convenient and flexible adjustment of the saline spray diameter, facilitates quick installation and removal of the filter screen, and improves the patient's comfort.

[0026] Working principle: The inner hollow sphere 14 is flattened and inserted into the outer hollow sphere 13. The inner hollow sphere 14 expands and restores its shape inside the outer hollow sphere 13, bringing it into contact with the inner wall of the outer hollow sphere 13. Since the inner wall of the cyst cavity is relatively fragile immediately after surgery, to avoid discomfort to the patient during irrigation, the outer hollow sphere 13 is rotated. The limiting ring 12 provides support for the movement of the outer hollow sphere 13, causing misalignment between the holes on the surface of the outer hollow sphere 13 and the holes on the surface of the inner hollow sphere 14. This reduces the diameter of the sprayed saline solution, preventing discomfort to the patient due to an excessively large saline solution diameter. Then, the connector 9 is removed and inserted into the water inlet channel inside the silicone tubing 1. The entire device is then inserted into the cyst cavity. The connecting ring 4, in conjunction with the elastic buckle bonded to the tooth surface, secures the device to the tooth surface. Next, align the limiting block 10 with the L-shaped groove 11 and press the filter screen 6. The filter screen 6 will drive the limiting block 10 to move inside the L-shaped groove 11. When the limiting block 10 moves to the turning position of the L-shaped groove 11, turn the knob 7. The knob 7 will drive the filter screen 6 and the limiting block 10 to rotate, so that the limiting block 10 is locked inside the L-shaped groove 11. Then, the filter screen 6 will be installed inside the placement ring 5. The filter screen 6 will prevent food from the mouth from entering the silicone tube 1. When it is necessary to remove the filter screen 6, repeat the above operation in reverse to quickly remove the filter screen 6. Then, take the syringe, pass the needle through the filter screen 6, and inject saline into the water inlet channel. The saline will spray out from the outer hollow sphere 13 through the silicone tube 1 and the inner hollow sphere 14. The saline will clean the inside of the bladder cavity. The cleaned liquid will be discharged from the water outlet channel inside the silicone tube 1, thus completing the drainage work.

[0027] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any indirect modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A drainage device for fenestration surgery of oral and maxillary cysts, comprising a silicone tube (1) and a fixation ring (2), characterized in that: A fixing ring (2) is installed on the outer wall of the silicone hose (1), and a connecting ring (4) is installed on the outer wall of the fixing ring (2). A partition plate (8) is installed inside the silicone hose (1), and the partition plate (8) divides the inside of the silicone hose (1) into two channels. A placement ring (5) is installed at the top of the silicone hose (1), and a filter screen (6) is installed inside the placement ring (5). A knob (7) is installed at the top of the filter screen (6). Four sets of equally spaced limiting blocks (10) are installed on the outer wall of the filter screen (6). Four sets of equally spaced L-shaped grooves (11) are installed on the inner wall of the placement ring (5), and the limiting blocks (10) and the L-shaped grooves (11) are slidably connected.

2. The drainage device for fenestration surgery of oral and maxillary cysts according to claim 1, characterized in that: A connector (9) is provided at the bottom of the silicone tube (1), and the connector (9) can be inserted into the inside of the silicone tube (1).

3. The drainage device for fenestration surgery of oral and maxillary cysts according to claim 2, characterized in that: The bottom end of the connector (9) is fitted with an inner hollow sphere (14), and a limit ring (12) is provided on the outer wall of the inner hollow sphere (14).

4. The drainage device for fenestration surgery of oral and maxillary cysts according to claim 3, characterized in that: The surface of the inner hollow sphere (14) is provided with an outer hollow sphere (13), and the diameter of the hole on the surface of the outer hollow sphere (13) is equal to the diameter of the hole on the surface of the inner hollow sphere (14).

5. A drainage device for fenestration surgery of oral and maxillary cysts according to claim 4, characterized in that: The hollow sphere (13) is slidably connected to the limiting ring (12), and the material used in the device is uniform silicone.