A jaw cyst plugging device

Abstract

The present invention relates to the field of medical devices, specifically a jaw cyst plug for use in jaw cyst fenestration and decompression surgery. When in use, the plug is partially or completely placed in the patient's cyst cavity and includes a drainage device and an expansion device; the two ends of the drainage device are opened 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 arranged in the cyst cavity and fixes the plug in the cyst cavity by increasing the volume; the expansion device increases the volume by filling with gas or liquid. The beneficial effects of the present invention are that the plug causes little additional damage to the patient, is highly comfortable, and has a relatively simple overall structure without affecting treatment.

Description

Technical Field

[0001] The present invention relates to the field of medical devices, and in particular to a jaw cyst plugging device. Background Art

[0002] Jaw cyst refers to a cystic mass containing cystic fluid that appears in the jaw. As the disease progresses, the cyst gradually increases in size and the jaw is destroyed. For jaw cysts, especially keratinizing cysts and ameloblastomas of the mandible, curettage has been the main treatment method in the past. Severe cases may even require osteotomy. These surgical methods have disadvantages such as large trauma and easy to leave cyst epithelium. They are no longer the first choice for the treatment of giant jaw cysts. Jaw cyst fenestration and decompression surgery is widely used in clinical practice due to its advantages such as less trauma, preservation of important nerves and blood vessels, and avoidance of excessive tissue resection. Jaw cyst fenestration and decompression surgery is to open a window on the surface of the cystic lesion, partially open the bone and cyst wall, drain the cystic fluid, and make a plug to keep the drainage port unobstructed, so that the pressure inside and outside the cyst cavity is balanced. Under the functional activity of the jaw, the surrounding bone of the cyst is regenerated, the cyst cavity gradually shrinks, and the shape is restored. Usually the decompression time after fenestration surgery is 6-18 months. After decompression, patients whose cysts completely disappear do not need a second-stage surgery. Those whose cysts do not completely disappear can undergo a second-stage surgery to scrape out the shrunken cyst. The purpose of fenestration decompression is not to eradicate the cysts directly and immediately, but to shrink the cyst cavity, restore the shape of the jaw, and protect the shape and function of the jaw to the greatest extent. Therefore, it is often necessary to use a plug to drain the cyst fluid during fenestration surgery for jaw cysts. The general structure of the plug in the prior art includes a body and a fixing part. The fixing part is generally in the form of a clasp, which is fixed by being placed on the adjacent teeth. The defects of this type of plug are relatively obvious. First, the fixation by the clasp has a greater impact on the patient's comfort, and it is easy to fall off and cause damage to the teeth. Second, if the fenestration stoma of the jaw cyst is located in the vestibular groove area, the direction of the cyst cavity is biased towards the buccal side, and the plug with a clasp and a base is often not able to be smoothly put in. Third, the production time is long; fourth, the film material may break easily due to the small opening of the cyst cavity and the large inner diameter; fifth, traumatic ulcers and peristomal pain may easily occur when the device is worn.

[0003] Therefore, it is particularly important to invent a plug that can be fixed without a clasp and has high comfort. Summary of the Invention

[0004] In view of this, an object of an embodiment of the present invention is to provide a jaw cyst plugging device, which utilizes an innovative structure to achieve fixation within the cyst cavity and avoid damage to adjacent teeth.

[0005] The technical solution of the present invention to solve the above technical problems is as follows:

[0006] A jaw cyst plugging device is used for jaw cyst fenestration and decompression surgery. When used, the plugging device is partially or completely placed in the patient's cyst cavity, and includes a drainage device and an expansion device.

[0007] The two ends of the drainage device are opened to form a through channel for connecting the cyst cavity and the patient's oral cavity;

[0008] The expansion device is made of a deformable material and is connected to the drainage device. The expansion device is arranged in the cystic cavity and fixes the plug in the cystic cavity by increasing its volume.

[0009] The expansion device increases in volume by filling with gas or liquid.

[0010] As a preferred technical solution of the present invention, the drainage device is a tubular structure with a channel inside, the expansion device is sleeved on the outer periphery of the drainage device, and the two ends are sealed with the drainage device, so that a closed cavity is formed between the expansion device and the drainage device, and the expansion device is expanded and deformed by filling gas or liquid into the cavity.

[0011] As a preferred technical solution of the present invention, the expansion device includes a shell for forming the closed cavity, and a joint for connecting the closed cavity and filling it with gas or liquid.

[0012] As a preferred technical solution of the present invention, the connector includes a tube shell with a hollow tubular structure, a puncture needle is provided in the tube shell, the needle tip of the puncture needle is provided with a side hole, and an elastic self-sealing cap is provided in the tube shell. The self-sealing cap can close the side hole in a natural state to close the connector, and when the self-sealing cap is compressed by external force, the side hole is exposed to make the connector conductive.

[0013] As a preferred technical solution of the present invention, the drainage device includes a drainage part with a hollow tubular structure and a trumpet-shaped fixing part, and the end of the fixing part with a smaller diameter is connected to the end of the drainage part facing the oral cavity.

[0014] As a preferred technical solution of the present invention, the connector passes through the fixing portion and extends out from the trumpet-shaped opening of the fixing portion.

[0015] As a preferred technical solution of the present invention, the drainage device and the expansion device are integrally formed, and a support member is provided in the internal channel of the drainage device.

[0016] As a preferred technical solution of the present invention, the connector is arranged inside the drainage device and extends toward one end of the sac cavity. The shell is mounted on the outside of the drainage device to form the closed cavity. The connector and the closed cavity are connected through a channel running through the drainage device.

[0017] The beneficial effects of the present invention are:

[0018] With this structure, the expansion device can be inflated by injecting liquid or gas into the enclosed cavity. The expanded device then fills the cystic cavity, securing the device and sealing the cystic fenestration. The drainage device then aspirates the internal cystic fluid to reduce pressure and achieve the therapeutic purpose. Overall, this device causes minimal additional trauma to the patient, offers a high level of comfort, and has a relatively simple overall structure without compromising treatment.

[0019] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic structural diagram of the plug provided in Example 1 of the present invention (unexpanded state);

[0021] Figure 2 This is a schematic structural diagram of the plug provided in Example 1 of the present invention (in expanded state);

[0022] Figure 3 This is a schematic structural diagram of the plug provided in Example 2 of the present invention (unexpanded state);

[0023] Figure 4 This is a schematic structural diagram of the plug provided in Example 2 of the present invention (in expanded state);

[0024] Figure 5 This is a schematic structural diagram of the connector provided in Example 2 of the present invention (puncture needle closed state);

[0025] Figure 6 This is a schematic structural diagram of the connector provided in Example 2 of the present invention (puncture needle conductive state);

[0026] Figure 7 This is a schematic structural diagram of the plug provided in Example 3 of the present invention;

[0027] Figure 8 This is a schematic structural diagram of the plug provided in Example 4 of the present invention.

[0028] In the figure: 100, drainage device; 110, drainage part; 120, fixing part; 130, support member; 200, expansion device; 210, shell; 220, connector; 221, tube shell; 222, puncture needle; 223, side hole; 224, self-sealing cap; 300, closed cavity; 310, channel; 400, syringe. Example

[0029] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0030] In the description of the present invention, it should be noted that when terms such as "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", and "outside" appear, the orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limiting the present invention.

[0031] Example 1

[0032] As attached Figure 1 and 2 As shown, an embodiment of the present invention discloses a mandibular cyst plug, which is used for fenestration and decompression surgery of mandibular cysts. When in use, the plug is partially or completely placed in the patient's cyst cavity. Its structure mainly includes a drainage device 100 and an expansion device 200, wherein both ends of the drainage device 100 are set to open to form a through channel and are used to connect the cyst cavity and the patient's oral cavity; the expansion device 200 is made of a deformable material and is connected to the drainage device 100. When the plug is used, the expansion device 200 is placed in the cyst cavity and fills the cyst cavity by increasing the volume, so that the plug is fixed in the cyst cavity. It should be further explained that in the above technical solution, the expansion device 200 increases its volume by filling gas or liquid. In specific implementation, the plug preferably sets the drainage device 100 as a tubular structure with a channel inside, and the expansion device 200 is sleeved on the outer periphery of the drainage device 100, and the two ends are sealed with the drainage device 100, so that a closed cavity 300 is formed between the expansion device 200 and the drainage device 100, so that the plug forms a structure similar to a sleeve, and the expansion device 200 is expanded and deformed by filling the closed cavity with gas or liquid.

[0033] Example 2

[0034] See attached Figure 3 and4 As shown, this embodiment, based on the previous embodiment, incorporates a fixing portion 120. The drainage device 100 comprises a hollow tubular drainage portion 110 and a trumpet-shaped fixing portion 120. The smaller end of the fixing portion 120 is connected to the end of the drainage portion 110 facing the oral cavity. This design aims to ensure that the trumpet-shaped fixing portion 120 can expand with the expansion device 200 to provide a secure fit. Furthermore, the trumpet-shaped structure facilitates insertion of the drainage tube during cystic fluid drainage.

[0035] The expansion device 200 includes a housing 210 for forming a sealed cavity 300 and a connector 220 for connecting the sealed cavity 300 and filling it with gas or liquid. In order to achieve the filling and extraction of gas / water into the cavity, the connector of the plug has a self-sealing function. Figure 5 and attached Figure 6 It can be seen that the connector 220 includes a tube shell 221 with a hollow tubular structure. A puncture needle 222 is provided in the tube shell 221. The needle tip of the puncture needle 222 is provided with a side hole 223. An elastic self-sealing cap 224 is provided in the tube shell 221. The self-sealing cap 224 can close the side hole 223 in a natural state to close the connector 220. When compressed by external force, the side hole 223 is exposed to make the connector 220 conductive. In the above technical solution, the puncture needle 222 is a prior art structure with a needle tip at one end of the interior being hollow, and a through hole is partially provided at the needle tip. In this embodiment, a puncture needle 222 with a side hole 223 provided on the side wall is preferably used to prevent the self-sealing cap 224 from being inserted into the puncture needle 222 and blocking the through hole of the puncture needle 222. As for the self-sealing cap 224, it is made of elastic material, and its working principle is that in a natural state, the self-sealing cap 224 forms a wrap around the puncture needle 222 and closes the side hole 223. When liquid or gas needs to be injected, a syringe 400 without a needle is used to extend into the tube shell 221. , the syringe 400 squeezes the self-sealing cap 224 to compress it, thereby exposing the side hole 223 of the puncture needle 222. At this time, the syringe 400 is connected to the closed cavity of the plug through the side hole 223, and the gas or liquid is injected through the syringe 400. When the volume of the expansion device 200 reaches the required volume, the syringe 400 is removed, and the self-sealing cap 224 recovers its shape due to its elasticity and re-blocks the side hole 223 of the puncture needle 222; when the gas or liquid in the closed cavity 300 needs to be extracted, the syringe 400 is used to squeeze the self-sealing cap 224 again and pull the syringe piston. In this technical solution, multiple side holes 223 of the puncture needle 222 can be set, and the lower end of the puncture needle 222 can be set to a slightly longer length, even reaching the bottom end of the expansion device 200. Such a setting is more conducive to liquid extraction.

[0036] Furthermore, in this embodiment, the connector 220 passes through the fixing portion 120 and extends out from the trumpet-shaped opening of the fixing portion 120. This has the advantage of making the structure of the plug more compact and the outer edge of the fixing portion 120 smoother, thereby avoiding negative impact on the patient's comfort.

[0037] Furthermore, in this embodiment, due to the deformation requirements of the expansion device 200, it must be made of a deformable material, generally preferably silicone rubber. The expandable volume is controlled by setting the thickness of the shell 210 of the expansion device 200. As for the drainage part 110 of the drainage device 100, it is preferably made of a material with a slightly harder structure to prevent the drainage part 110 from being squeezed and closed due to pressure when filling with gas and liquid. Of course, if the drainage device 100 and the expansion device 200 are integrally formed, the drainage tube can be placed in advance before filling to prevent the drainage part 110 from closing.

[0038] In general, the plug of the device can effectively fix the cyst cavity and perform drainage, and during implementation, the plug can be set in models of various sizes to suit patients with different cyst conditions.

[0039] Example 3

[0040] This embodiment is an improved solution of the embodiment, and its basic structure is the same as that of embodiment 1. Figure 7 As shown, the difference lies in that the drainage device 100 and the expansion device 200 are integrally formed. To prevent the drainage tube from being squeezed and closed, a support member 130 is provided within the internal channel of the drainage device 100. The support member 130 shown in the figure is a spring structure, but other types of support members can also be used instead. In addition, in this embodiment, the drainage portion 110 is slightly longer than the expansion device 200 and extends from the housing 210 of the expansion device 200. This configuration is intended to be suitable for use in cases where the cyst cavity is deep and narrow.

[0041] Example 4

[0042] This embodiment is another variation of embodiment 1. Figure 8 As shown, the connector 220 is arranged inside the drainage device 100 and extends in the direction of one end of the sac cavity, that is, the connector 220 is arranged inside the drainage part 110 and extends downward. The shell 210 is mounted on the outside of the drainage device 100 to form a closed cavity 300. The lower end of the connector 220 is connected to the closed cavity 300 through a channel 310 running through the drainage device 100. The purpose of such a setting is to avoid the need to set a support member as in Example 2, and to prevent the closed cavity 300 from being squeezed and closed by the expansion device 200.

[0043] The above specifically describes the preferred embodiments of the present invention. Of course, the present invention can also adopt forms different from the above-mentioned embodiments. Equivalent transformations or corresponding modifications made by technicians familiar with the field without violating the spirit of the present invention should fall within the scope of protection of the present invention.

Claims

1. A jaw cyst plugging device, used for jaw cyst fenestration decompression surgery, which is partially or completely placed in the patient's cyst cavity when used, characterized in that: including drainage devices and expansion devices; The two ends of the drainage device are opened 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 device is disposed in the cystic cavity and fixes the plug in the cystic cavity by increasing its volume; The expansion device increases in volume by filling with gas or liquid; The drainage device is a tubular structure with a channel inside. The expansion device is sleeved on the outer periphery of the drainage device and sealed with the drainage device at both ends, so that a closed cavity is formed between the expansion device and the drainage device. The expansion device is expanded and deformed by filling the cavity with gas or liquid. The expansion device includes a housing for forming the closed cavity and a joint for communicating with the closed cavity and filling it with gas or liquid; The connector includes a tubular shell with a hollow interior, a puncture needle disposed in the tubular shell, a side hole disposed at the needle tip of the puncture needle, and an elastic self-sealing cap disposed in the tubular shell. The self-sealing cap can close the side hole in a natural state to seal the connector, and when the self-sealing cap is compressed by an external force, the side hole is exposed to make the connector conductive; The connector is arranged inside the drainage device and extends toward one end of the sac cavity. The shell is sleeved on the outside of the drainage device to form the closed cavity. The connector and the closed cavity are connected through a channel running through the drainage device.

2. The jaw cyst plugging device according to claim 1, characterized in that: The drainage device comprises a drainage portion in a hollow tubular structure and a fixing portion in a trumpet shape, wherein an end of the fixing portion with a smaller diameter is connected to an end of the drainage portion facing the oral cavity.

3. The jaw cyst plugging device according to claim 2, characterized in that: The joint passes through the fixing portion and extends out from the trumpet-shaped opening of the fixing portion.

4. The jaw cyst plugging device according to claim 1, characterized in that: The drainage device and the expansion device are integrally formed, and a support member is provided in the internal channel of the drainage device.

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