Dental support type jaw cyst windowing negative pressure suction and flushing device

Abstract

The present application relates to a kind of tooth support jaw cyst windowing negative pressure suction and flushing device, it is characterized in that, including: tooth support component, the tooth support component is configured to be fixed on patient dentition;Double-channel pipe component, the double-channel pipe component is set or fixed on the tooth support component, and it is positioned in the windowing part of jaw cyst under the support of the tooth support component;Wherein, the double-channel pipe component includes flushing channel and negative pressure drainage channel independent of each other, the distal end of the flushing channel and the negative pressure drainage channel passes through the windowing part and extends into jaw cyst cavity, the flushing channel is communicated with flushing liquid source, the negative pressure drainage channel is communicated with external negative pressure source, to transport flushing liquid into the jaw cyst cavity and the contents of cyst cavity are pumped out.

Description

Technical Field

[0001] This invention relates to a medical device, and more specifically to a tooth-supported jawbone cyst fenestration negative pressure suction and irrigation device. Background Technology

[0002] Jawbone cysts are a type of cystic lesion occurring within the upper and lower jawbones. They are characterized by a cyst wall, containing fluid or semi-fluid contents, and exhibiting slow, expansive growth. Based on their etiology, they can be mainly classified as: odontogenic cysts (such as apical cysts, dentigerous cysts, and keratocystic odontogenic tumors); and non-odontogenic cysts (such as nasopalatine duct cysts).

[0003] Its pathological mechanism usually involves: the proliferation of epithelial remnants to form a cyst wall, the increase of fluid osmotic pressure in the cyst cavity, and the continuous increase of pressure in the cyst cavity, which promotes bone resorption and cyst cavity expansion.

[0004] Fenestration decompression is a conservative surgical procedure for treating jaw cysts. Its core mechanism involves creating a permanent opening (fenestration) in the cyst wall, allowing the cyst cavity to communicate with the oral cavity or the outside, reducing intracystic pressure, and altering the cystic microenvironment. This aims to inhibit further cyst expansion, promote cyst shrinkage, and induce gradual bone regeneration. A typical procedure includes exposing the cyst area under local or general anesthesia, removing part of the bone wall and incising the cyst wall to drain the fluid. The cyst wall is then sutured to the oral mucosa to form a continuous opening. Iodoform is placed to occupy the drainage channel. After removing the iodoform 1-2 weeks post-surgery, an impression is taken from the oral cavity to fabricate a fenestrated cyst dressing. The patient removes the dressing daily and the cyst cavity is irrigated.

[0005] Existing instruments for treating jaw cysts typically have the following technical problems: 1. In existing fenestration decompression therapy, the plug or related maintenance device is usually difficult to manufacture and install at the same time as the fenestration surgery, resulting in a long treatment process.

[0006] 2. Existing devices often lack an effective suction structure to work with the flushing process. Liquid tends to remain in the bladder cavity after flushing, which is not conducive to forming a continuous and controllable "in-out" fluid exchange.

[0007] 3. Existing methods of opening the fenestration for decompression mostly rely on the natural pressure difference between the sac cavity and the oral cavity for passive decompression, which makes it difficult to maintain a relatively stable decompression state.

[0008] 4. Existing devices have limited effect on improving the local microenvironment of the cyst cavity, which is not conducive to providing more favorable conditions for bony repair of the cyst cavity.

[0009] 5. Existing device fixation methods mostly rely on soft tissue adhesion or local impaction, which are prone to displacement or dislodgement in the dynamic oral environment, affecting the continuity of treatment.

[0010] 6. Insufficient irrigation or poor drainage can lead to retention of contents and secretions within the cyst cavity, increasing the risk of local contamination or secondary infection. Patient compliance is poor, requiring frequent follow-up visits for irrigation or self-operation. Frequent removal of the insertion device damages the mucosa at the opening, increasing the treatment burden.

[0011] Most of the appliances, drainage devices, or irrigation instruments used in current fenestration decompression therapy are single-channel structures or simple space-occupying support structures. They can usually only maintain the patency of the fenestration or perform unidirectional irrigation, lacking an integrated structure that simultaneously allows for the inflow of irrigation fluid and the negative pressure drainage of the cavity contents. Furthermore, existing devices mostly rely on soft tissue adhesion or local impaction for retention, which is prone to displacement, loosening, or inaccurate positioning in the dynamic environment of oral chewing, swallowing, and tongue movement, making it difficult to maintain stable position at the fenestration site for a long period. The adaptability of existing devices to different patients' cavity depths, fenestration locations, and dentition conditions is also relatively limited, and there is a lack of effective structural design to prevent the backflow of oral contents and contamination of the cavity. Summary of the Invention

[0012] The purpose of this invention is to provide a tooth-supported jaw cyst fenestration negative pressure suction and irrigation device to at least solve one or more of the following problems existing in the current fenestration decompression treatment: the device is difficult to install stably during or early after surgery; the irrigation fluid is not easy to drain out in time after entering the cyst cavity, making it difficult to form a continuous and effective irrigation and drainage combination; the device has insufficient retention stability in the dynamic environment of the oral cavity; the difference in cyst cavity depth, fenestration position and dentition conditions among different patients leads to insufficient device adaptability; and the oral contents return to the cyst cavity through the tube, causing a high risk of contamination.

[0013] To address at least one of the aforementioned technical problems, the present invention provides a tooth-supported jaw cyst fenestration negative pressure suction and irrigation device, characterized in that it comprises: a tooth support member configured to be fixed on the patient's dentition; and a dual-channel tube member disposed on or fixed to the tooth support member and positioned at the fenestration site of the jaw cyst under the support of the tooth support member; wherein the dual-channel tube member includes an independent irrigation channel and a negative pressure drainage channel, the distal ends of the irrigation channel and the negative pressure drainage channel extending through the fenestration site into the jaw cyst cavity, the irrigation channel being connected to an irrigation fluid source, and the negative pressure drainage channel being connected to an external negative pressure source to deliver irrigation fluid into the jaw cyst cavity and aspirate and drain the cyst contents.

[0014] According to one aspect of the present invention, the dual-channel pipe component uses a first pipe and a second pipe arranged in parallel to form the flushing channel and the negative pressure drainage channel, respectively, or uses an inner pipe and an outer pipe arranged coaxially to form the two channels.

[0015] According to one aspect of the invention, the portion of the flushing channel and / or the negative pressure drainage channel extending into the jawbone cavity is provided with a length adjustment mechanism; the length adjustment mechanism is at least one of a telescopic sleeve structure, a sliding limiting structure, or a threaded adjustment structure.

[0016] According to one aspect of the invention, the flushing channel and / or the negative pressure drainage channel are provided with a plurality of through holes at the end located within the jawbone cavity.

[0017] According to one aspect of the invention, the plurality of through holes are side holes distributed circumferentially along the end and / or through holes distributed axially along the end.

[0018] According to one aspect of the invention, the end of the flushing channel and / or the negative pressure drainage channel located within the jawbone cavity forms a hollow spherical structure, and the plurality of through holes are disposed on the hollow spherical structure.

[0019] According to one aspect of the present invention, the flushing channel and the negative pressure drainage channel share the same hollow spherical structure, and the flushing fluid enters the bladder cavity through a plurality of through holes on the hollow spherical structure and is drawn out by the negative pressure drainage channel through the plurality of through holes.

[0020] According to one aspect of the invention, the dental support member includes at least one of a clasp retention structure, a partial denture base structure, a brace retention structure, or a clear brace retention structure.

[0021] According to one aspect of the invention, the proximal end of the negative pressure drainage channel is provided with a one-way valve, which only allows conduction in the direction of negative pressure suction; and / or, the proximal end of the irrigation channel is provided with an irrigation connector, which contains a one-way valve for preventing oral contents from entering the irrigation channel.

[0022] According to one aspect of the invention, the proximal end of the negative pressure drainage channel is connected to a negative pressure suction connector, which is used to connect to a negative pressure drainage ball or a medical negative pressure suction device.

[0023] According to one aspect of the invention, the tooth support member and the dual-channel tube member are integrally formed or detachably connected. Attached Figure Description

[0024] The accompanying drawings, which illustrate various embodiments of the present invention, are described below. In the drawings, the same reference numerals denote the same parts. The drawings are not necessarily drawn to scale, and some parts may be enlarged to show the details of the present invention.

[0025] Figure 1 This is a perspective view of the tooth-supported jaw cyst fenestration negative pressure suction and irrigation device according to the present invention. Figure 2This is a perspective view of the tooth-supported jaw cyst fenestration negative pressure suction and irrigation device according to the present invention, viewed from another angle. Figure 3 This is a schematic diagram of the installation of the tooth-supported jaw cyst fenestration negative pressure suction and irrigation device according to the present invention. Detailed Implementation

[0026] The embodiments of this application will be further described in detail below with reference to the accompanying drawings and examples. The detailed description of the following embodiments and the accompanying drawings are used to illustrate the principles of this application by way of example, but should not be used to limit the scope of this application. This application can be implemented in many different forms and is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

[0027] These embodiments are provided to make the application thorough and complete, and to fully express the scope of the application to those skilled in the art. It should be noted that, unless otherwise specifically stated, the relative arrangement of components and steps, material composition, numerical expressions, and values ​​illustrated in these embodiments should be interpreted as merely exemplary and not as limiting.

[0028] All terms used in this application have the same meaning as understood by one of ordinary skill in the art to which this application pertains, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries should be interpreted as having meanings consistent with their meanings in the context of the relevant art, and not as idealized or highly formalized, unless expressly defined herein.

[0029] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, they should be considered part of the specification.

[0030] The term "dental support structure" as used in this article refers to a structure that can provide support and / or retention by means of the patient's dentition, including but not limited to clasp retention structures, partial denture base structures, brace retention structures, clear brace retention structures, and personalized guide structures.

[0031] The term "dual-channel pipe component" as used in this article refers to a tubular structure that forms an independent flushing channel and a negative pressure drainage channel, which can be arranged in parallel or coaxially.

[0032] The term "length adjustment mechanism" as used in this article refers to a structure that can change and maintain the length of the flushing channel and / or negative pressure drainage channel extending into the cyst cavity.

[0033] Reference Figures 1-3The tooth-supported jaw cyst fenestration negative pressure suction and irrigation device of the present invention generally includes a tooth support component 1, a double-lumen tube component 2, and a negative pressure suction connector 7.

[0034] The dental support component 1 is a retention device custom-made based on the patient's dentition. It preferably employs a tooth clasp, partial base, or crown-like structure adapted to the individual patient's dentition. Alternatively, it can utilize a transparent crown-like structure, a digitally 3D-printed guide plate, or an implant-assisted retention structure, achieving stable retention through adjacent teeth. In some embodiments, the dental support component can be a personalized guide plate structure based on the patient's dentition data. This dentition data can be acquired through intraoral scanning, plaster model scanning, or oral imaging data, and combined with the location of the fenestration site and the direction of the cavity for digital three-dimensional design. This allows for the pre-formation of positioning and installation parts on the dental support component that cooperate with the dual-channel tube component, thereby improving the directional accuracy and in-situ stability of the dual-channel tube component extending into the fenestration site. In some embodiments, the personalized guide plate structure can also be designed jointly based on the patient's dentition data and jawbone imaging data. The dentition data can be acquired through intraoral scanning, model scanning, etc., while the jawbone imaging data can be acquired through cone-beam CT or other oral and maxillofacial imaging methods. By registering the digital model of the dentition with the image data, the location of the cyst, the direction of the fenestration, and the preferred entry path of the dual-channel tube component can be determined, and the three-dimensional design of the tooth support component and its guiding and positioning structure can be completed accordingly. In this embodiment, the tooth support component 1 can adopt a personalized guide plate structure. Specifically, a digital model of the patient's dentition can be acquired first, and then jawbone image data containing the lesion area can be acquired. Subsequently, the digital model of the dentition and the image data are registered to determine the fenestration location, the direction of the cyst, and the preferred path for the dual-channel tube component 2 to pass through the fenestration and enter the cyst. Based on the above registration results, a guide plate body adapted to the patient's dentition can be formed in digital design software, and a guiding and positioning structure for accommodating and defining the dual-channel tube component 2 can be formed on it. In this way, the tooth support component 1 not only fits the patient's dentition more precisely, but also enables the dual-channel tube component 2 to correspond more accurately to the fenestration location and the cyst region in the spatial direction. Since dental support components can be designed jointly based on dental arch data and imaging data, they can take into account both dental arch retention fit and cavity path positioning accuracy, which helps to improve device installation accuracy, reduce repeated clinical adjustments, and enhance individualized fit between different patients.

[0035] like Figure 3As shown, the dental support member 1 is fixed to the tooth by a structure such as a retainer. In some embodiments, the dental support member is provided with a guide positioning structure for defining the spatial position of the dual-channel tube member. The guide positioning structure may include at least one of a guide hole, a guide groove, a connector, an angle limiting part, and a depth limiting part, for defining the insertion direction, tilt angle, and insertion depth of the dual-channel tube member relative to the window opening, so as to improve the positioning accuracy and repeatability of the dual-channel tube member during installation and use.

[0036] The dual-lumen tube component 2 is fixedly connected to the dental support component 1 and positioned at the fenestration site 8 of the cyst in the jawbone via the dental support component 1. This provides stable mechanical support, preventing device displacement or dislodgement. Furthermore, utilizing the dentition as a hard tissue fulcrum improves long-term wearing stability and enables precise positioning of the device, allowing the dual-lumen tube component 2 to accurately enter the predetermined position within the cyst cavity. In one embodiment, the dual-channel tube component employs a parallel dual-tube structure, where the first tube forms an irrigation channel and the second tube forms a negative pressure drainage channel. This structure facilitates the separate setting of the diameter and wall thickness of the two channels and allows for separate processing and connection. In another embodiment, the dual-channel tube component employs a coaxial dual-tube structure, with the inner and outer tubes defining the irrigation channel and negative pressure drainage channel, respectively. This structure is more compact overall, reducing the device's footprint in situations where intraoral space is limited.

[0037] In this embodiment, the tooth support member 1, in addition to forming a retention fit with the patient's dentition, also forms a guide and positioning part for installing the dual-channel tube member 2. The guide and positioning part may include a through or semi-through guide hole to define the entry direction of the dual-channel tube member 2; and / or include a guide groove extending along a preset path to define the installation angle of the dual-channel tube member 2; and / or include a depth limiting part disposed at the end of the guide path to limit the excessive extension of the dual-channel tube member 2 into the cyst cavity.

[0038] In some embodiments, the depth limiting portion may be formed by a stepped surface, shoulder, flange, locking portion, or independent limiting member, as long as it can provide axial stopping effect when the dual-channel pipe component 2 is installed in place. With the above structure, the dual-channel pipe component 2 can return to the predetermined position relatively stably after repeated disassembly and assembly.

[0039] Since the dental support component is also equipped with guide holes, guide grooves and / or depth limiting parts, it can not only improve the overall fixation stability of the device, but also improve the positioning accuracy of the dual-channel tube component relative to the fenestration and cyst cavity, and reduce the flushing dead angle, poor drainage or local irritation caused by installation angle deviation or inconsistent insertion depth.

[0040] One end of the dual-lumen tube component 2 passes through the fenestration 8 of the cyst and is inserted into the cyst cavity. Specifically, the dual-lumen tube component 2 includes an irrigation tube 3 and a negative pressure tube 4. One end of the irrigation tube 3 and the negative pressure tube 4 are respectively inserted into the cyst cavity through the fenestration 8 of the cyst. The irrigation tube 3 and the negative pressure tube 4 are structurally independent but work together. The dual-lumen tube component 2 (irrigation tube 3 and negative pressure tube 4) is designed with an adjustable length structure in the part entering the cyst cavity. The adjustment method can be: telescopic sleeve structure, sliding snap structure, threaded adjustment structure, magnetic positioning structure, elastic adaptive structure, etc., so as to adapt to different cyst cavity depths and position differences, ensure that the tube end is in the optimal drainage and irrigation position, and reduce stimulation or drainage obstruction caused by length mismatch. For example, in the telescopic sleeve structure, the length inserted into the cyst cavity can be changed by the relative extension and contraction of the inner and outer sleeves, and the adjusted length can be maintained by friction fit, snap limit or stop structure; in the threaded adjustment structure, the axial extension length can be changed by the relative rotation fit, and the positioning can be maintained by the thread self-locking. The above structure can be installed separately in the flushing channel or the negative pressure drainage channel, or simultaneously in both. In the illustrated embodiment, the flushing pipe 3 and the negative pressure pipe 4 are parallel dual-channel pipe structures. In other embodiments, the flushing pipe 3 and the negative pressure pipe 4 can also be coaxial dual-channel pipe structures, which include an outer pipe and an inner pipe. The outer pipe defines the flushing pipe 3, and the inner pipe defines the negative pressure pipe 4; or the outer pipe defines the negative pressure pipe 4, and the inner pipe defines the flushing pipe 3.

[0041] The irrigation tube 3 is used to deliver irrigation fluid into the cyst cavity. The irrigation tube 3 is connected to an irrigation fluid source, which may include a pulsed irrigation fluid source and a metered-release irrigation fluid source. The distal end of the irrigation tube 3 within the cyst cavity is a hollow spherical structure with a porous structure 5. The hollow spherical structure can be made of elastic or rigid medical materials, and its shape is preferably a smooth, rounded structure to reduce mechanical stimulation of the end to the cyst wall or adjacent tissues. Multiple through-holes are evenly distributed on different orientations of the spherical surface to allow the irrigation fluid to diffuse in multiple directions and for the fluid within the cyst cavity to be collected and aspirated from multiple directions. The porous structure 5 can be in the following form: multiple side holes or diffused holes are provided at the tube end, with the holes distributed in a ring or multi-directional pattern.

[0042] The technical function is to achieve multi-directional flushing, avoid dead zones in single-point flushing, improve the flushing coverage within the cyst cavity, and facilitate the loosening of secretions and necrotic tissue. The negative pressure tube 4 is used to aspirate fluid from the cyst cavity, and its channel is independent of the flushing tube. This achieves continuous or intermittent negative pressure drainage, forming a closed-loop "inflow-outflow" system with the flushing tube 3, improving fluid exchange efficiency and reducing fluid retention. In one embodiment, a one-way valve 9 can be installed inside the negative pressure tube 4. This one-way valve 9 only opens in the negative pressure suction direction, preventing saliva or food from entering the cyst cavity and causing secondary infection. The one-way valve 9 can be a fluid-acting valve, a spring-loaded valve, or a solenoid valve, etc. The one-way valve can be located at the proximal end of the negative pressure drainage channel, at the negative pressure suction connector, or on the connecting pipe between the two, as long as it can achieve conduction in the negative pressure suction direction and restrict reverse flow. In some implementations, a one-way valve may also be provided in the rinsing connector to close the rinsing channel when no external rinsing device is connected, thereby reducing the possibility of saliva, food debris or other oral contents accidentally entering the rinsing channel.

[0043] exist Figure 1 and Figure 2 In the illustrated embodiment, the distal end of the flushing tube 3 within the cyst cavity is a hollow spherical structure with a porous structure 5. However, those skilled in the art will readily recognize that the distal end of the negative pressure tube 4 within the cyst cavity can also be designed as a hollow spherical structure with a porous structure 5. The multiple side holes or diffusion holes can be distributed circumferentially and / or axially along the end to expand the dispersion range of the flushing fluid within the cyst cavity and the coverage range of the negative pressure suction, reducing local dead zones caused by unidirectional flushing or suction. The number, pore size, and distribution density of the multiple through holes can be adjusted according to actual needs to balance fluid exchange efficiency and stimulation control of the cyst cavity tissue.

[0044] Or, it can be like Figure 3 As shown, a common hollow spherical structure is formed at the distal end of the flushing tube 3 and the negative pressure tube 4 within the cyst cavity, and a porous structure 5 is provided on it, thereby achieving the synchronous discharge of flushing fluid and cyst secretions. The common hollow spherical structure serves as the end for both flushing fluid diffusion and negative pressure collection, creating a more uniform fluid exchange area within the cyst cavity compared to a single straight tube end, and reducing concentrated irritation to local tissues caused by local contact between the tube end and the cyst wall. The size of the hollow spherical structure can be selected according to the size of the cyst cavity and the spatial conditions of the fenestration site. In this configuration, the flushing fluid is discharged into the cyst cavity through the flushing tube 3 and then through the porous structure 5. After flushing, the flushing fluid, along with cyst secretions, is drawn away by the negative pressure within the negative pressure tube 4 through the porous structure 5.

[0045] The other end of the negative pressure tube 4 (i.e., the end opposite to the end where the cyst cavity is located) is connected to the negative pressure suction connector 7 via a conduit. The negative pressure suction connector 7 is an external structure that can be connected to a negative pressure source. The negative pressure source includes a negative pressure drainage ball, a medical negative pressure suction device, and other devices that can provide stable negative pressure. This provides a continuous and stable negative pressure source, maintaining the pressure inside the cyst cavity lower than the external environment and significantly enhancing the decompression effect and drainage efficiency. The negative pressure source may also include a miniature built-in negative pressure device or a disposable negative pressure energy storage device. In some embodiments, the flushing channel and the negative pressure drainage channel are axially offset at their working ends within the cyst cavity. This allows the flushing fluid, after being discharged through the flushing channel, to first diffuse within the cyst cavity and then be suctioned out by the offset negative pressure drainage channel, thereby reducing direct short-distance back-suction of the flushing fluid and improving the fluid exchange effect within the cyst cavity. In this embodiment, the outlet end of the flushing tube 3 within the cyst cavity and the suction end of the negative pressure tube 4 within the cyst cavity are not positioned at exactly the same axial direction, but are offset back and forth along the extension direction of the dual-channel tube component 2. Preferably, the outlet end of the irrigation tube 3 is closer to the deep part of the cyst cavity than the suction end of the negative pressure tube 4, or the suction end of the negative pressure tube 4 is closer to the fenestration site than the outlet end of the irrigation tube 3, so that the irrigation fluid forms a certain diffusion path after entering the cyst cavity and is then drained out by negative pressure. In some embodiments, the anterior-posterior misalignment distance can be designed or adjusted according to the size of the cyst cavity, the location of the fenestration, and the treatment needs. Because the irrigation end and the drainage end are axially misaligned within the cyst cavity, the irrigation fluid is not easily drawn back immediately after flowing out, and a more effective diffusion and exchange path can be formed within the cyst cavity, thereby helping to expand the irrigation coverage area and improve the synergistic effect of drainage.

[0046] In some embodiments, the outlet area of ​​the flushing channel and the suction port area of ​​the negative pressure drainage channel can be separated from each other and / or arranged in different directions to reduce the possibility of the flushing fluid being directly drawn back along the shortest path, allowing the flushing fluid to more fully act on different areas within the bladder cavity. In this embodiment, the outlet area of ​​the flushing channel and the suction port area of ​​the negative pressure drainage channel can be separated from each other. For example, the flushing port can preferably be arranged in the area facing the depth of the bladder cavity or the sidewall, while the suction port can preferably be arranged in the area relatively biased towards the fenestration or the other side; or the two can be located in different circumferential and / or different axial regions on the same end structure.

[0047] By separating the flushing port area from the suction port area, the flushing fluid can preferentially diffuse to a wider area within the bladder cavity before being suctioned out, thereby reducing local short-circuit backflow and improving the fluid exchange path within the bladder cavity. When the flushing channel and the negative pressure drainage channel share the same hollow spherical structure, the flushing port area and the suction port area can be located on different surface areas of the hollow spherical structure to achieve functional zoning under shared end conditions.

[0048] In some embodiments, the dental support component and the dual-channel tube component may be integrally molded to reduce connection errors between components and improve overall stability; in other embodiments, the dental support component and the dual-channel tube component may be detachably connected, such as by plug-in, snap-fit, screw-in or other mechanical connection methods, to facilitate clinical assembly, replacement, cleaning or adjustment for different treatment stages.

[0049] The other end of the flushing tube 3 (i.e., the end opposite to the end containing the cyst cavity) is connected to the flushing connector 6 via a conduit. The flushing connector 6 may be in the form of a hollow sleeve, with its inner cavity connected to the conduit, and its outer surface may be threaded to connect with a flushing fluid source (e.g., Figure 3 The syringe (as shown) is threaded and fixed in place, and then the flushing solution is injected. The flushing connector can be a threaded connection, a plug-in connection, a Luer connector connection, or other connection methods suitable for communication with external flushing devices. The negative pressure suction connector can also adopt a corresponding sealing connection structure to ensure reliable communication with a negative pressure drainage ball, a medical negative pressure suction device, or a connecting catheter. A one-way valve can also be installed inside the flushing connector 6; this one-way valve can be a spring-loaded valve (such as...). Figure 3 (As shown), or a fluid-acting valve, solenoid valve, etc., whose function is to open the inner cavity of the rinsing connector 6 during rinsing and close it when not rinsing, so as to prevent food residue or saliva in the mouth from accidentally entering the rinsing channel.

[0050] The distal integrated design of the dual-lumen tube component 2 is inserted into the cyst cavity and stably positioned via a dental support structure. Its operation involves: irrigation fluid entering the cyst cavity through the irrigation tube, while a negative pressure tube continuously or intermittently draws in, thus achieving simultaneous drainage of the irrigation fluid and cyst secretions. This establishes a dynamic fluid circulation system, improving clearance efficiency and enhancing the microenvironment within the cyst cavity. During device wear, the dental support component maintains a relatively stable position of the dual-channel tube component relative to the dentition and fenestration site, facilitating continuous irrigation, drainage, and decompression, and reducing irritation to the soft tissue at the fenestration site caused by repeated device disassembly.

[0051] In some embodiments, the overall dimensions of the dual-channel tube component 2 can be selected and set according to the size of the patient's fenestration, the dental region where the lesion is located, the available space in the mouth, and the requirements for wearing comfort. The irrigation channel and the negative pressure drainage channel in the dual-channel tube component 2 can have different flow cross-sections. The negative pressure drainage channel preferably has a flow cross-sectional area not less than that of the irrigation channel to improve the drainage capacity of the contents of the cyst cavity, secretions, and residual liquid after irrigation, and to reduce the risk of blockage caused by viscous liquids, coagulated components, or fine tissue debris.

[0052] In some implementations, the flushing channel may have a relatively small flow cross-section to facilitate control of the flushing fluid inlet rate and reduce the device's footprint within the mouth; the negative pressure drainage channel may have a relatively large flow cross-section to balance negative pressure transmission efficiency and continuous drainage capacity. The wall thickness, outer diameter, and channel arrangement of the dual-channel tube component 2 can be determined comprehensively based on structural strength, flexibility, and patient comfort.

[0053] In some embodiments, the overall dimensions of the dual-channel tube component 2 can be selected and set according to the size of the patient's window opening, the dental region where the lesion is located, the available space in the mouth, and the requirements for wearing comfort. The overall outer diameter of the dual-channel tube component 2 can be 1.5 mm to 6.0 mm, preferably 2.0 mm to 4.5 mm.

[0054] In some embodiments, the flushing channel and the negative pressure drainage channel in the dual-channel tube component 2 may have different flow cross-sections. The inner diameter of the flushing channel may be 0.4 mm to 2.0 mm, preferably 0.6 mm to 1.5 mm; the inner diameter of the negative pressure drainage channel may be 0.8 mm to 3.0 mm, preferably 1.0 mm to 2.2 mm. Preferably, the negative pressure drainage channel has a flow cross-sectional area not less than that of the flushing channel to improve the drainage capacity of the cyst contents, secretions, and residual fluid after flushing, and to reduce the risk of blockage caused by viscous fluid, coagulated components, or fine tissue debris.

[0055] In some embodiments, the flushing channel can have a relatively small flow cross-section to facilitate control of the flushing fluid input rate and reduce the space occupied by the device in the inlet; the negative pressure drainage channel can have a relatively large flow cross-section to balance negative pressure transmission efficiency and continuous drainage capacity. The wall thickness of the dual-channel pipe component 2 can be 0.2 mm to 1.0 mm, preferably 0.3 mm to 0.8 mm, and its outer circumferential cross-section can be circular, elliptical, or flattened.

[0056] In some embodiments, when the dual-channel tube component 2 is arranged in a parallel configuration, the center-to-center distance between the two channels can be 0.8 mm to 4.5 mm; when it is arranged in a coaxial configuration, the outer diameter of the inner tube can be 0.5 mm to 2.0 mm, and the outer diameter of the outer tube can be 1.5 mm to 5.0 mm. The above parameters can be determined comprehensively based on structural strength, flexibility, and patient wearing comfort.

[0057] In some embodiments, the length of the dual-channel tube component 2 extending into the cyst cavity can be adjusted based on preoperative imaging measurements, intraoperative fenestration depth, and cyst cavity shrinkage during follow-up visits. Preferably, the dual-channel tube component 2 is provided with a length adjustment mechanism to keep the irrigation end and / or negative pressure drainage end in a suitable position at different treatment stages.

[0058] Since the volume of the cyst cavity usually shrinks gradually as decompression progresses after fenestration treatment of jaw cysts, the distal end can be extended relatively deeper into the cyst cavity in the early stage of treatment. In subsequent follow-up visits and adjustments, the distal end can be gradually withdrawn according to the degree of cyst cavity shrinkage to reduce mechanical stimulation of the cyst wall or adjacent tissues and maintain better irrigation and drainage effects.

[0059] During decompression treatment of jaw cysts, the cyst volume typically shrinks gradually due to decreased intracystic pressure, reduced secretions, and subsequent tissue repair. Therefore, the appropriate length of the dual-channel tube component 2 extending into the cyst cavity is not fixed but depends on the treatment stage. In the early stages of treatment, when the cyst cavity is relatively large, a closer proximity of the distal end to the deeper part of the cyst cavity helps to expand the irrigation coverage and enhance deep fluid renewal. However, in the later stages of treatment, as the cyst cavity gradually shrinks, maintaining the original insertion length may increase mechanical stimulation of the cyst wall or adjacent tissues. Therefore, by adjusting the position of the irrigation end and / or negative pressure drainage end in stages through the length adjustment mechanism, it can be kept in a more suitable area of ​​action, thus balancing irrigation efficiency, drainage effect, and tissue stimulation control.

[0060] In addition, the addition of scale markings, locking parts, limiting parts and / or locking parts can improve the consistency, repeatability and in-situ stability of length adjustment at different follow-up stages, making it easier to manage continuously by combining imaging data and clinical observation results.

[0061] In some embodiments, the length adjustment mechanism may have a continuous adjustment stroke or multiple preset positions, and may be used in conjunction with scale markings, a stop part, a limit part or a locking part to improve the consistency of repeated adjustments and the stability of use.

[0062] In some embodiments, the length of the dual-channel tube component 2 extending into the cyst cavity can be adjusted based on preoperative imaging measurements, intraoperative fenestration depth, and cyst cavity shrinkage during follow-up visits. Preferably, the dual-channel tube component 2 is provided with a length adjustment mechanism to keep the irrigation end and / or negative pressure drainage end in a suitable position at different treatment stages.

[0063] In one embodiment, the length adjustment mechanism includes a fixed section, an axially telescopic adjustment section, and a locking structure for maintaining the adjusted position. The adjustment section may employ an inner and outer telescopic sleeve structure and is capable of extending or retracting relative to the fixed section along the axial direction of the dual-channel tube member 2. The locking structure may include at least one of a snap-locking structure, an elastic locking structure, a threaded locking structure, or a friction locking structure. Preferably, the adjustment section is provided with a plurality of axially spaced positioning grooves or positioning parts, and the fixed section is provided with locking parts that cooperate with them, to form a plurality of preset length positions.

[0064] In some embodiments, the effective adjustment stroke of the length adjustment mechanism can be 3 mm to 20 mm, preferably 5 mm to 15 mm; the distance between adjacent preset positions can be 0.5 mm to 2 mm, preferably about 1 mm. The length adjustment mechanism can also be used in conjunction with scale markings, limit parts and / or locking parts to improve the consistency of repeated adjustments and the stability of use.

[0065] Since the volume of the cyst cavity usually gradually shrinks after fenestration decompression treatment of jaw cysts, in the early stage of treatment, the distal end can be extended relatively deeper into the cyst cavity to expand the irrigation coverage and enhance deep fluid renewal. In subsequent follow-up visits and adjustments, the corresponding length can be gradually withdrawn according to the degree of cyst cavity shrinkage to reduce mechanical stimulation of the distal end on the cyst wall or adjacent tissues and maintain better irrigation and drainage effects.

[0066] In some implementations, the physician can determine the initial insertion length based on preoperative imaging measurements and adjust the length adjustment mechanism in stages during follow-up visits, taking into account imaging results, cyst retraction, and the patient's local response. This method allows the dual-channel tube component 2 to adapt to the dynamically changing cyst shape throughout the treatment process, thereby balancing drainage efficiency, irrigation coverage, and tissue stimulation control.

[0067] In some embodiments, the functional ends of the flushing channel and the negative pressure drainage channel within the bladder cavity can be configured to have the same insertion depth or different insertion depths. Preferably, they are axially offset to prevent the flushing fluid from being immediately drawn back into the negative pressure drainage channel after being discharged from the flushing channel.

[0068] For example, in one embodiment, the outlet end of the flushing channel may be closer to the depth of the cyst cavity than the suction end of the negative pressure drainage channel, so that the flushing fluid can first reach the deeper area of ​​the cyst cavity and then flow back towards the opening and be aspirated; in another embodiment, the suction end of the negative pressure drainage channel may be closer to the opening area than the outlet end of the flushing channel, so as to form a fluid exchange path from the depth of the cyst cavity to the opening area.

[0069] The aforementioned axial misalignment can be adjusted according to the cyst morphology, lesion extent, fenestration location, and treatment goals, thereby improving the fluid circulation path within the cyst, increasing the irrigation coverage, and reducing local fluid retention.

[0070] Since the flushing fluid needs to form a certain diffusion and exchange path within the bladder cavity after being discharged from the flushing channel, if the outlet end of the flushing channel and the suction end of the negative pressure drainage channel are positioned too close together, the flushing fluid may be directly drawn back before it has fully acted on other areas within the bladder cavity, thus affecting the flushing coverage and fluid renewal effect. Therefore, in some embodiments, by setting the working ends of the flushing channel and the negative pressure drainage channel to different insertion depths, especially by using an axially staggered arrangement, the flushing fluid can preferentially reach the deeper or more distal areas of the bladder cavity, and then flow back towards the opening direction under negative pressure and be discharged, thereby improving the fluid exchange path within the bladder cavity and reducing local fluid retention.

[0071] Preferably, the outlet end of the flushing channel is positioned closer to the deep part of the cyst cavity than the suction end of the negative pressure drainage channel, while the suction end of the negative pressure drainage channel is relatively closer to the fenestration site. This arrangement facilitates the formation of a fluid exchange direction from deep to superficial layers and reduces direct adhesion or irritation of the suction end to the deep cyst wall. For cases with small cyst cavities or those adjacent to important anatomical structures, the aforementioned axial misalignment distance can be appropriately reduced; for cases with large cyst cavities or those at risk of deep fluid retention, the aforementioned axial misalignment distance can be appropriately increased.

[0072] In one specific embodiment, the dual-channel tube component 2 adopts a parallel dual-tube structure, with the flushing channel and the negative pressure drainage channel extending into the bladder cavity through independent telescopic adjustment sections. The distal outlet end of the flushing channel is set to extend 3 mm further forward than the distal suction end of the negative pressure drainage channel. Both are fixed in their respective positions by a locking length adjustment mechanism.

[0073] The flushing channel has multiple outlet holes at its distal end, facing the depth of the bladder cavity and the side walls. The negative pressure drainage channel has multiple suction holes at its distal end, facing the vent side and the sides. In use, the flushing fluid first enters the bladder cavity from a deeper position, then diffuses within the bladder cavity and flows back towards the vent, finally being suctioned out by the negative pressure drainage channel at a relatively shallow position.

[0074] In cases where the cyst cavity gradually shrinks during follow-up visits, a relative misalignment of approximately 3 mm between the two can be maintained. At the same time, the overall insertion length of the flushing channel and the negative pressure drainage channel can be withdrawn simultaneously to maintain a relatively stable fluid exchange path and reduce mechanical stimulation to the cyst wall.

[0075] In some embodiments, the outlet region of the flushing channel and the suction port region of the negative pressure drainage channel are separated from each other. This separation can manifest as them being located at different axial positions, in different circumferential regions, and / or facing different spatial directions. This structure allows the flushing fluid to preferentially diffuse into deeper parts, sidewalls, or other target areas within the bladder cavity, rather than being directly aspirated and recovered along the shortest path.

[0076] In some embodiments, the flushing port may preferably be located on the side facing the deep part of the bladder cavity and / or the bladder wall region, while the suction port may preferably be located on the side relatively biased towards the opening portion, thereby forming a fluid path that is more conducive to the diffusion of flushing fluid and the removal of contents.

[0077] For cysts with irregular shapes, large internal spaces, or crypt areas, the functional separation design of the above-mentioned irrigation port area and suction port area is particularly beneficial for improving the cleaning coverage and reducing local dead corners in the cyst.

[0078] Compared with the prior art, the present invention can achieve the following technical effects: (1) Enables immediate application of the device and shortens the treatment cycle. By integrating personalized dental support components with dual-lumen tube components, the device can be installed simultaneously with or shortly after fenestration surgery, avoiding the traditional need for secondary impression taking and fabrication. This reduces the number of patient follow-up visits, shortens the overall treatment cycle, and improves clinical efficiency.

[0079] (2) Achieve integrated flushing and suction to improve liquid exchange efficiency. This invention employs a dual-lumen tube structure, enabling the flushing tube and negative pressure tube to form a collaborative working system, establishing a dynamic "liquid inflow-liquid outflow" cycle. In this way, the flushing fluid can be discharged simultaneously, reducing fluid retention in the cyst cavity and improving the efficiency of clearing secretions and necrotic tissue from the cyst. Furthermore, compared to single-channel devices, the fluid exchange efficiency is significantly improved (expected to be approximately 1-2 times higher).

[0080] (3) Achieve continuous negative pressure drainage and enhance the decompression effect. By using an external negative pressure drainage ball or negative pressure suction device, a stable negative pressure state is maintained within the cyst cavity. This establishes a continuous pressure gradient, significantly enhancing the decompression effect, accelerating the cyst cavity shrinkage process, and shortening the cyst cavity shrinkage time compared to passive decompression methods (clinically expected to be shortened by 20%-40%).

[0081] (4) Improve the microenvironment of the cyst cavity and promote bone tissue regeneration The synergistic effect of flushing and negative pressure can continuously remove inflammatory secretions from the cyst cavity, optimizing the local microenvironment. This reduces the accumulation of inflammatory factors, provides an environment conducive to bone regeneration, promotes gradual bony repair within the cyst cavity, and improves osteogenic quality.

[0082] (5) Improve fixation stability and reduce device displacement Dental arch-based retention is achieved through dental support components such as clasps or braces. This utilizes hard tissue support, significantly improving stability, reducing displacement or dislodgement caused by chewing, swallowing, etc., and extending the time the device remains in place, thus improving treatment continuity.

[0083] (6) Reduce the risk of infection and improve the cleaning effect of the cyst cavity. The porous flushing structure combined with negative pressure drainage can achieve continuous fluid renewal within the cyst cavity, thereby reducing the retention of secretions and bacteria, lowering the incidence of secondary infections, and improving local cleaning efficiency.

[0084] (7) Improve patient compliance and reduce tissue damage The device of this invention can remain stable in place for extended periods, reducing the need for frequent disassembly and reassembly. This minimizes irritation to the mucosa at the opening caused by repeated removal of the insertion device, reduces the complexity of the procedure for patients, and improves patient compliance and comfort.

[0085] (8) Enhance the compatibility and clinical applicability of the device The adjustable length of the dual-lumen tube and the personalized tooth support design make the device suitable for cysts of different locations and sizes. This enhances the device's versatility and meets the application needs under complex anatomical conditions. Enhance its clinical application value.

[0086] (9) Social and economic effects The device of this invention can reduce the number of follow-up visits and decrease the consumption of medical resources. This shortens the treatment cycle, reduces patients' time costs, improves treatment effectiveness, reduces the incidence of complications, and has good prospects for clinical application and industrialization value.

[0087] The embodiments of this application have now been described in detail. To avoid obscuring the concept of this application, some details known in the art have not been described. Those skilled in the art can fully understand how to implement the technical solutions disclosed herein based on the above description.

[0088] While specific embodiments of this application have been described in detail by way of examples, those skilled in the art should understand that the above examples are for illustrative purposes only and are not intended to limit the scope of this application. Those skilled in the art should understand that modifications can be made to the above embodiments or equivalent substitutions can be made to some technical features without departing from the scope and spirit of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any manner.

Claims

1. A tooth-supported jawbone cyst fenestration negative pressure suction and irrigation device, characterized in that, include: A dental support member configured to be fixed to the patient's dentition; A dual-channel tube component, which is disposed on or fixed to the tooth support component and positioned at the fenestration site of the jaw cyst under the support of the tooth support component; The dual-channel tube component includes an independent flushing channel and a negative pressure drainage channel. The distal ends of the flushing channel and the negative pressure drainage channel extend into the jawbone cavity through the fenestration. The flushing channel is connected to a flushing fluid source, and the negative pressure drainage channel is connected to an external negative pressure source to deliver flushing fluid into the jawbone cavity and aspirate and drain the contents of the cavity.

2. The tooth-supported jawbone cyst fenestration negative pressure suction and irrigation device according to claim 1, characterized in that, The dual-channel pipe component can be configured by using a first pipe and a second pipe arranged in parallel to form the flushing channel and the negative pressure drainage channel, or by using an inner pipe and an outer pipe arranged coaxially to form the two channels.

3. The tooth-supported jawbone cyst fenestration negative pressure suction and irrigation device according to claim 1 or 2, characterized in that, The portion of the flushing channel and / or the negative pressure drainage channel extending into the jawbone cavity is provided with a length adjustment mechanism; the length adjustment mechanism is at least one of a telescopic sleeve structure, a sliding limiting structure, or a threaded adjustment structure.

4. The tooth-supported jawbone cyst fenestration negative pressure suction and irrigation device according to claim 1, characterized in that, The flushing channel and / or the negative pressure drainage channel are provided with multiple through holes at the end located in the jawbone cavity.

5. The tooth-supported jawbone cyst fenestration negative pressure suction and irrigation device according to claim 4, characterized in that, The plurality of through holes are side holes distributed circumferentially along the end and / or through holes distributed axially along the end.

6. The tooth-supported jawbone cyst fenestration negative pressure suction and irrigation device according to claim 4 or 5, characterized in that, The flushing channel and / or the negative pressure drainage channel are located at the ends of the jawbone cavity and form a hollow spherical structure, with the plurality of through holes disposed on the hollow spherical structure.

7. The tooth-supported jawbone cyst fenestration negative pressure suction and irrigation device according to claim 6, characterized in that, The flushing channel and the negative pressure drainage channel share the same hollow spherical structure. The flushing fluid enters the bladder cavity through multiple through holes in the hollow spherical structure and is then drawn out by the negative pressure drainage channel through the same multiple through holes.

8. The tooth-supported jawbone cyst fenestration negative pressure suction and irrigation device according to claim 1, characterized in that, The dental support structure includes at least one of the following: a clasp-type retention structure, a partial denture base structure, a brace-type retention structure, or a transparent brace-type retention structure.

9. The tooth-supported jawbone cyst fenestration negative pressure suction and irrigation device according to claim 1, characterized in that, The proximal end of the negative pressure drainage channel is equipped with a one-way valve, which only allows flow in the direction of negative pressure suction; and / or, The rinsing channel is provided with a rinsing connector at its proximal end, and the rinsing connector is provided with a one-way valve to prevent oral contents from entering the rinsing channel.

10. The tooth-supported jawbone cyst fenestration negative pressure suction and irrigation device according to claim 1, characterized in that, The proximal end of the negative pressure drainage channel is connected to a negative pressure suction connector, which is used to connect to a negative pressure drainage ball or a medical negative pressure suction device.

11. The tooth-supported jawbone cyst fenestration negative pressure suction and irrigation device according to claim 1, characterized in that, The tooth support component and the dual-channel tube component are either integrally formed or detachably connected.

Images