An inflatable water-filled combination maxillary defect repair support device

Abstract

The application discloses an inflatable and water-filled combined maxillary defect repairing and supporting device, and particularly relates to the technical field of maxillary defect repairing and supporting devices, which comprises a lower prosthesis base body, an upper inflatable supporting body is communicated with the top of the lower prosthesis base body, the lower prosthesis base body comprises a palate sealing part, a tooth row repairing part is fixedly arranged at the bottom of the palate sealing part, an edge fitting part is fixedly arranged at the top of the palate sealing part, the upper inflatable supporting body comprises a filling cavity, and a connecting interface is fixedly and penetratively arranged at the center of the bottom of the filling cavity. The lower prosthesis base body and the upper inflatable supporting body are combined, the lower prosthesis base body can complete the tooth occlusion and the oral-nasal separation basic function, the upper inflatable supporting body can fill the defect cavity and support the collapsed facial soft tissue outward, and multiple clinical problems such as mastication, pronunciation, oral-nasal leakage and facial deformity are solved synchronously.

Description

Technical Field

[0001] This invention relates to the field of maxillary defect repair support devices, and more specifically to a combined inflatable and water-filled maxillary defect repair support device. Background Technology

[0002] Maxillary tumor resection, trauma, infection, or congenital malformation can all cause partial or extensive defects in the maxilla. Postoperatively, these patients often experience the following problems: 1. Missing teeth, affecting chewing, speech, and occlusion; 2. Abnormal communication between the oral cavity and nasal cavity, maxillary sinuses, etc., resulting in oral-nasal leakage; 3. Loss of maxillary supporting structures, leading to collapse of soft tissues in the cheek, infraorbital region, and paranasal region, affecting appearance and function; irregular cavities often form within the defect area, with obvious undercuts, making it difficult to take impressions for conventional solid prostheses, fabricate them, and successfully insert them.

[0003] Traditional prostheses are commonly used in clinical practice for restoration. While traditional prostheses can restore the dentition and close the oral-nasal communication to some extent, they generally focus on restoring intraoral function and are not effective in filling the postoperative cavity of the maxilla, thus having limited effect on improving facial soft tissue collapse.

[0004] Furthermore, since maxillary defects often have deep undercuts and complex spatial morphology, directly fabricating solid filling prostheses often presents the following problems: 1. The prosthesis is large and difficult to place through the mouth; 2. It is heavy and causes a noticeable foreign body sensation; 3. The retention effect is limited and the stability is poor; 4. The fit to the defect cavity is insufficient, and the support for facial soft tissues is not ideal. Therefore, there is an urgent need to provide a new maxillary prosthesis device that, while retaining the function of traditional lower prostheses, uses a deformable, inflatable or water-fillable upper structure to unfold and fill the cavity after insertion, thus achieving multiple benefits such as easy insertion, lightweight design, good retention, and facial support. Summary of the Invention

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides an inflatable and water-filled combined maxillary defect repair support device. Based on the completion of tooth restoration and oral-nasal separation in the lower structure, the upper expandable support structure gradually expands and fills the maxillary defect cavity after being placed in the oral cavity, so as to support facial tissues, improve appearance, improve retention and enhance patient wearing comfort, thereby solving the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an inflatable and water-filled combined maxillary defect repair support device, comprising a lower prosthesis base, the top of which is connected to an upper expandable support body. The lower prosthesis base includes a palatal closure portion, the bottom of which is fixedly provided with a dental prosthesis portion, and the top of which is fixedly provided with an edge fitting portion. The upper expandable support body includes a filling cavity, the bottom center of which is fixedly provided with a connecting interface. The palatal closure portion is provided with a connecting sealing assembly for communicating with the connecting interface. The connecting sealing assembly includes a hollow tube, the bottom of which has an annular groove. A threaded cap is threadedly connected inside the annular groove. A one-way valve is fixedly provided at the bottom center of the threaded cap. A conduit is rotatably provided at the top of the threaded cap. The top of the conduit passes through the connecting interface and extends into the filling cavity for filling the filling cavity with gas or liquid.

[0007] In a preferred embodiment, an annular slot is provided at the bottom of the connection interface. The inner walls of the annular slot and the annular groove are both machined with internal threads, and the outer wall of the hollow tube is machined with external threads. The hollow tube is disposed in the annular slot and threadedly connected to the connection interface. The threaded cap is threadedly connected in the annular groove and threadedly connected to the annular groove. A first rubber sealing ring is provided between the top of the hollow tube and the connection interface. Through the above-mentioned threaded connection structure and sealing ring, mechanical fixation and airtight connection between the upper expandable support and the lower prosthesis base can be achieved, which facilitates the replacement or cleaning of the upper support and related consumables.

[0008] In a preferred embodiment, the one-way valve includes a sleeve, a circular plate connected to the top of the sleeve, a telescopic rod connected to the center of the bottom of the circular plate, a valve ball connected to the bottom end of the piston rod of the telescopic rod, a compression spring connected between the top of the valve ball and the bottom of the circular plate, the compression spring being sleeved on the outside of the telescopic rod, and a plurality of through holes arranged in a ring array on the outer wall of the sleeve, all of which are located above the valve ball.

[0009] In a preferred embodiment, a silicone ring is fixedly provided on the inner wall of the sleeve, and the valve ball contacts the inner wall of the silicone ring to achieve a sealing effect. A rubber block is fixedly provided inside the sleeve and is located at the bottom of the valve ball. The silicone ring and the rubber block further improve the sealing reliability of the one-way valve.

[0010] In a preferred embodiment, a second rubber sealing ring is provided between the conduit and the connecting interface, and between the sleeve and the threaded cap, to ensure the airtightness and liquid tightness of each connection.

[0011] In a preferred embodiment, at least one retention component is fixedly provided on both sides of the palatal closure portion to enhance the stability of the repair device in the oral cavity.

[0012] In a preferred embodiment, a sponge rod is fixedly provided at the top of the conduit, and the top of the sponge rod contacts the inner wall of the top of the filling cavity to provide support for the filling cavity and improve the support effect of the upper expandable support.

[0013] In a preferred embodiment, the corners of the threaded cap and the hollow tube are both chamfered to reduce irritation and damage to the oral soft tissues.

[0014] In a preferred embodiment, the shape of the upper expandable support can be individually designed according to the three-dimensional morphology of the patient's maxillary defect cavity to better match the cavity contour. The outer wall of the upper expandable support can be provided with local thickness differences to control the preferential expansion area. The outer wall of the upper expandable support is provided with a buffer layer to reduce irritation to the local mucosa.

[0015] The technical effects and advantages of this invention are as follows: 1. This invention combines a lower prosthesis matrix with an upper expandable support. The lower prosthesis matrix can perform basic functions such as dentition and oral-nasal separation, while the upper expandable support can expand to fill defective cavities and support collapsed facial soft tissues, thus simultaneously solving multiple clinical problems such as chewing, speech, oral-nasal leakage, and facial deformities.

[0016] 2. The upper expandable support adopts a hollow, inflatable and water-filled structure instead of a large-volume solid filling structure, which can significantly reduce the overall weight and improve wearing comfort. The inflatable and water-filled structure can expand inside the cavity and adapt to irregular cavities, making it more suitable for maxillary defects with undercuts and complex spatial morphology.

[0017] 3. It adopts a triple sealing structure of threaded locking + double-layer rubber sealing ring + spring-type one-way valve. The one-way valve silicone ring + limit rubber block double sealing protection completely eliminates the backflow and leakage of the inflation / water medium. The support pressure is stable during long-term wear and will not collapse or fail. 4. Hollow tubes, threaded caps, and connecting interfaces are all detachable by threads. Consumable parts such as expansion membranes, one-way valves, and catheters can be disassembled and replaced individually. The lower base can be reused, reducing the cost of long-term repair consumables for patients. After disassembly and assembly, it can be thoroughly disinfected and cleaned to prevent the growth of oral bacteria. 5. By using the threaded cap to adjust the length of the conduit inside the cavity, the upper expandable support can be supported by the conduit and the sponge rod, thereby further improving the support effect of the upper expandable support on the defect cavity. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a top view of the overall structure of the present invention; Figure 3 This is a cross-sectional view of the lower pseudo-attachment base and the upper expandable support body of the present invention; Figure 4 This is a schematic diagram of the connection and sealing assembly of the present invention; Figure 5 This is a cross-sectional view of the connection interface of the present invention; Figure 6 This is a schematic diagram of the hollow tube moving downwards according to the present invention; Figure 7 This is a cross-sectional view of the hollow tube of the present invention; Figure 8 This is a cross-sectional view of the sleeve of the present invention.

[0019] The attached figures are labeled as follows: 1. Lower prosthesis base; 101. Palatal closure; 102. Dental restoration; 103. Marginal fitting; 2. Upper expandable support; 201. Filling cavity; 202. Connection interface; 203. Annular slot; 3. Connection sealing assembly; 301. Hollow tube; 302. Annular groove; 303. Threaded cap; 304. Conduit; 4. One-way valve; 401. Sleeve; 402. Circular plate; 403. Telescopic rod; 404. Valve ball; 405. Compression spring; 406. Through hole; 407. Silicone ring; 408. Rubber block; 5. First rubber sealing ring; 6. Second rubber sealing ring; 7. Retention assembly; 8. Sponge rod. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Refer to the instruction manual appendix Figures 1-8 This invention provides an inflatable and water-filled combined maxillary defect repair support device, comprising a lower prosthesis base 1, wherein the lower prosthesis base 1 may be made of medical resin, medical polymer material, medical silicone, thermoplastic material or a combination thereof, preferably made of oral restoration material with certain strength and good biocompatibility. The top of the lower prosthesis base 1 is connected to an upper expandable support 2. The lower prosthesis base 1 includes a palatal closure part 101, the bottom of the palatal closure part 101 is fixedly provided with a dental arch repair part 102, and the top of the palatal closure part 101 is fixedly provided with an edge fitting part 103.

[0022] The upper expandable support 2 includes a filling cavity 201, with a connecting interface 202 fixedly passing through the center of the bottom of the filling cavity 201. The outer wall of the upper expandable support 2 is made of a flexible, biocompatible elastic material, preferably medical silicone, medical elastomer, thermoplastic polyurethane film, or composite flexible film material. Its shape can be individually designed according to the three-dimensional morphology of the maxillary defect cavity after the patient's surgery, and it fits closely to the contour of the cavity.

[0023] The palatal closure 101 is provided with a connecting sealing assembly 3 for communicating with the connecting interface 202. The connecting sealing assembly 3 includes a hollow tube 301. An annular groove 302 is provided at the bottom of the hollow tube 301. A threaded cap 303 is threadedly connected inside the annular groove 302. A one-way valve 4 is fixedly inserted through the bottom center of the threaded cap 303. A conduit 304 is rotatably provided at the top of the threaded cap 303. The top of the conduit 304 passes through the connecting interface 202 and extends into the filling cavity 201 for filling the filling cavity 201 with gas or liquid. Specifically, the gas can be clean air or medical inert gas, and the liquid can be purified water.

[0024] like Figure 5 and Figure 6 As shown, the bottom of the connection interface 202 is provided with an annular slot 203. The inner walls of the annular slot 203 and the annular groove 302 are both machined with internal threads. The outer wall of the hollow tube 301 is machined with external threads. The hollow tube 301 is located in the annular slot 203 and is threadedly connected to the connection interface 202. The threaded cap 303 is threadedly connected to the annular groove 302 and is threadedly connected to the annular groove 302. A first rubber sealing ring 5 is provided between the top of the hollow tube 301 and the connection interface 202.

[0025] like Figure 7 and Figure 8 As shown, the one-way valve 4 includes a sleeve 401, a circular plate 402 connected to the top of the sleeve 401, a telescopic rod 403 connected to the bottom center of the circular plate 402, a valve ball 404 connected to the bottom end of the piston rod of the telescopic rod 403, a compression spring 405 connected between the top of the valve ball 404 and the bottom of the circular plate 402, the compression spring 405 being sleeved on the outside of the telescopic rod 403, and a plurality of through holes 406 arranged in a ring array on the outer wall of the sleeve 401, all of which are located above the valve ball 404.

[0026] like Figure 8 As shown, a silicone ring 407 is fixedly provided on the inner wall of the sleeve 401, and the valve ball 404 contacts the inner wall of the silicone ring 407 to play a sealing role. A rubber block 408 is fixedly provided inside the sleeve 401, and the rubber block 408 is located at the bottom of the valve ball 404.

[0027] A second rubber sealing ring 6 is provided between the conduit 304 and the connection interface 202, and between the sleeve 401 and the threaded cover 303, to prevent media leakage.

[0028] At least one retention component 7 is fixedly provided on both sides of the palatal closure 101. Specifically, the retention component 7 includes a clasp, a precision attachment, an undercut structure, etc., for retention structure to cooperate with remaining teeth, implants or soft tissue. In addition, in this invention, in addition to conventional retention methods, the upper expandable support 2 can form a certain fit with the defect cavity wall after inflation and water filling, which can further increase the overall friction retention and spatial stability, thereby improving the wearing stability of the device.

[0029] A sponge rod 8 is fixedly provided at the top end of the conduit 304. The top of the sponge rod 8 contacts the inner wall of the top of the filling cavity 201, which is used to support the filling cavity 201 and prevent the upper expandable support 2 from collapsing excessively in the expanded state, thus affecting the support effect.

[0030] The corners of the threaded cap 303 and the hollow tube 301 are all chamfered to reduce stress concentration.

[0031] The shape of the upper expandable support 2 can be individually designed according to the three-dimensional shape of the patient's maxillary defect cavity to better match the cavity contour. The outer wall of the upper expandable support 2 can be provided with local thickness differences to control the preferential expansion area. The outer wall of the upper expandable support 2 is provided with a buffer layer to reduce irritation to the local mucosa.

[0032] During use, the upper expandable support 2 is initially in an uninflated / water-filled or low-volume state to facilitate smooth insertion of the entire device through the oral cavity. After the device is placed in the oral cavity, the edge fitting portion 103 of the lower prosthesis base 1 fits against the patient's residual alveolar ridge, palatal tissue, or defect edge. The palatal sealing portion 101 closes the oral-nasal communication area, and the dentition restoration portion 102 restores the missing teeth and some occlusal function. Subsequently, a syringe is inserted into the rubber block 408, pushing the valve ball 404 upward against the elastic force of the compression spring 405, causing the valve ball 404 to move above the multiple through holes 406. After the through holes 406 are opened, gas or liquid can be injected into the catheter 304 using a syringe. The gas or liquid flows through the sponge rod 8 into the filling cavity 201, causing the upper expandable support 2 to gradually expand and fill the maxillary defect cavity, supporting the facial soft tissue, thereby improving facial contour, symmetry, and mouth opening function. In addition, the amount of medium injected can be adjusted appropriately according to the pressure on the facial soft tissue to obtain the best support effect. When the device is finished or needs to be removed, push the valve ball 404 upward with the syringe, then aspirate the gas or liquid to reduce the volume of the upper expandable support 2, and then remove the entire device.

[0033] In conclusion, the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An inflatable and water-filled combined maxillary defect repair support device, characterized in that: It includes a lower pseudo-attachment base (1), the top of which is connected to an upper expandable support (2). The lower prosthesis substrate (1) includes a palatal closure part (101), the bottom of which is fixedly provided with a dental restoration part (102), and the top of which is fixedly provided with an edge fitting part (103). The upper expandable support (2) includes a filling cavity (201), and a connecting interface (202) is fixedly passed through the center of the bottom of the filling cavity (201). The palatal closure (101) is provided with a connection sealing assembly (3) for communicating with the connection interface (202). The connection sealing assembly (3) includes a hollow tube (301). An annular groove (302) is provided at the bottom of the hollow tube (301). A threaded cap (303) is threaded inside the annular groove (302). A one-way valve (4) is fixedly inserted through the bottom center of the threaded cap (303). A conduit (304) is rotatably provided at the top of the threaded cap (303). The top of the conduit (304) passes through the connection interface (202) and extends into the filling cavity (201) for filling the filling cavity (201) with gas or liquid.

2. The inflatable and water-filled combined maxillary defect repair support device according to claim 1, characterized in that: The bottom of the connection interface (202) is provided with an annular slot (203). The inner walls of the annular slot (203) and the annular groove (302) are both machined with internal threads. The outer wall of the hollow tube (301) is machined with external threads. The hollow tube (301) is located in the annular slot (203) and is threadedly connected to the connection interface (202). The threaded cap (303) is threadedly connected in the annular groove (302) and is threadedly connected to the annular groove (302). A first rubber sealing ring (5) is provided between the top of the hollow tube (301) and the connection interface (202).

3. The inflatable and water-filled combined maxillary defect repair support device according to claim 1, characterized in that: The one-way valve (4) includes a sleeve (401), a circular plate (402) is connected to the top of the sleeve (401), a telescopic rod (403) is connected to the center of the bottom of the circular plate (402), a valve ball (404) is connected to the bottom end of the piston rod of the telescopic rod (403), a compression spring (405) is connected between the top of the valve ball (404) and the bottom of the circular plate (402), the compression spring (405) is sleeved on the outside of the telescopic rod (403), and a plurality of through holes (406) arranged in a ring array are opened on the outer wall of the sleeve (401), and the plurality of through holes (406) are all located above the valve ball (404).

4. The inflatable and water-filled combined maxillary defect repair support device according to claim 1, characterized in that: A silicone ring (407) is fixedly provided on the inner wall of the sleeve (401). The valve ball (404) contacts the inner wall of the silicone ring (407) to achieve a sealing effect. A rubber block (408) is fixedly provided inside the sleeve (401). The rubber block (408) is located at the bottom of the valve ball (404).

5. The inflatable and water-filled combined maxillary defect repair support device according to claim 1, characterized in that: A second rubber sealing ring (6) is provided between the conduit (304) and the connecting interface (202), and between the sleeve (401) and the threaded cap (303).

6. The inflatable and water-filled combined maxillary defect repair support device according to claim 1, characterized in that: At least one retaining component (7) is fixedly provided on both sides of the palatal closure (101).

7. The inflatable and water-filled combined maxillary defect repair support device according to claim 1, characterized in that: A sponge rod (8) is fixedly provided at the top of the conduit (304). The top of the sponge rod (8) contacts the inner wall of the top of the filling cavity (201) and is used to support the filling cavity (201).

8. The inflatable and water-filled combined maxillary defect repair support device according to claim 1, characterized in that: The corners of the threaded cap (303) and the hollow tube (301) are all chamfered.

9. The inflatable and water-filled combined maxillary defect repair support device according to claim 1, characterized in that: The shape of the upper expandable support (2) can be individually designed according to the three-dimensional shape of the patient's maxillary defect cavity to better match the cavity contour. The outer wall of the upper expandable support (2) can be set with local thickness differences to control the preferential expansion area. The outer wall of the upper expandable support (2) is provided with a buffer layer to reduce the stimulation of the local mucosa.

Images