Mouth opening device for oral surgery

Abstract

The invention discloses a mouth opening device for oral surgery, which relates to the field of medical instruments for oral surgery and comprises a head fixing component and an upper and lower jaw adjusting mechanism. The head fixing assembly comprises an arc-shaped head hoop, an adjusting bandage with a hook-and-loop fastener, and a U-shaped lower jaw support rotationally connected with the lower portion of the arc-shaped head hoop through a damping rotating shaft. The upper and lower jaw adjusting mechanism comprises an upper jaw supporting plate, a lower jaw supporting plate and an adjusting assembly, a sliding groove is formed in the lower portion of the arc-shaped head hoop, the adjusting assembly is slidably connected with the sliding groove through a telescopic rod, an anti-skid rotating handle is arranged on the adjusting assembly to adjust the distance between the supporting plates, and the device can stably fix the head, avoid shaking in the operation and improve the operation precision. The opening degree can be finely adjusted in real time to adapt to different operation requirements and oral shapes of patients; the silica gel cushion, the inclined plane design and the torsional spring buffering reduce compression stimulation, the comfort level of a patient is high, the device is suitable for children, maxillofacial deformity and other people, and efficient oral surgery diagnosis and treatment are assisted.

Description

Technical Field

[0001] This invention relates to the field of oral surgical medical devices, and more specifically to an oral surgical opening device. Background Technology

[0002] During oral and maxillofacial surgery, patients need to keep their mouths open continuously to ensure that medical staff have a clear field of vision and operating space. Existing mouth-opening devices have significant drawbacks: Firstly, traditional mouth-opening devices are mostly handheld or simple bite-type structures, lacking head fixation functions. The patient's head is prone to shaking during the operation, which not only affects the accuracy of the operation but may also lead to accidental injury to oral tissues by the instrument. Secondly, some bite-type mouth-opening devices directly compress the upper and lower teeth and gums, which can easily cause local pain and numbness with prolonged use, resulting in poor patient comfort.

[0003] On the other hand, existing devices lack flexibility in opening adjustment, often featuring fixed positions or requiring disassembly for adjustment. They cannot provide real-time fine-tuning of the opening distance based on the surgical site or the patient's oral cavity size. Furthermore, the adjustment structure often lacks anti-slip design, potentially causing opening deviation due to vibration during surgery, necessitating repeated adjustments and prolonging surgical time. In addition, traditional devices have poor adaptability, failing to meet the needs of patients with different head shapes and jawbone morphologies, especially for children or patients with maxillofacial deformities, where fixation and adjustment effects are even less than ideal.

[0004] Therefore, developing an oral surgical opening device that features stable head fixation, real-time micro-adjustment of opening degree, strong adaptability, and high comfort has become an urgent problem to be solved in the field of oral medical devices. Summary of the Invention

[0005] The purpose of this invention is to overcome the above-mentioned problems and provide an oral surgery opening device. To achieve the above objective, this invention adopts the following technical solution:

[0006] An oral surgery mouth opening device includes a head fixation component and an upper and lower jaw adjustment mechanism;

[0007] The head fixation assembly includes an arc-shaped headband, an adjustment strap, and a chin rest. The inner side of the arc-shaped headband conforms to the contour of the head, the adjustment strap is located on both sides of the arc-shaped headband, the chin rest has a U-shaped structure, and the two ends of the chin rest are rotatably connected to the lower part of the arc-shaped headband through a damping pivot. The inner side of the chin rest is provided with a silicone pad.

[0008] The upper and lower jaw adjustment mechanism includes an upper jaw support plate, a lower jaw support plate, and an adjustment component. The lower part of the arc-shaped headband is provided with a sliding groove. The adjustment component is slidably connected to the sliding groove through a telescopic rod. The adjustment component is provided with an anti-slip knob, and the distance between the upper jaw support plate and the lower jaw support plate is adjusted by rotating the anti-slip knob.

[0009] As an improvement, the arc-shaped headband is provided with adjusting posts on both sides of the bottom, and the bottom of the adjusting posts is provided with telescopic posts. The two ends of the chin support are rotatably connected to the bottom of the telescopic posts, and a first bolt is provided between the adjusting posts and the telescopic posts.

[0010] As an improvement, the adjustment assembly includes a support block, with the maxillary support plate and mandibular support plate respectively hinged at the upper and lower ends of the support block. The anti-slip handle has a stud at its front end, and the support block has a first screw hole in the middle. The stud is screwed into the first screw hole. The maxillary support plate and mandibular support plate have L-shaped plates at their ends. The front end of the stud abuts against the inflection point of the L-shaped plate to open up the maxillary support plate and mandibular support plate.

[0011] As an improvement, the sliding groove is provided at the front end of the adjusting column, and positioning grooves are provided on both sides of the sliding groove. A sliding block is slidably provided on the sliding groove. Positioning protrusions are provided at the top and bottom of both sides of the sliding block. The positioning protrusions cooperate with the positioning groove. A second bolt is provided on the outer side of the sliding block. The second bolt fixes the sliding block and the adjusting column.

[0012] As an improvement, the telescopic rod includes a first tube section and a second tube section. The first tube section is sleeved on the second tube section, and the second tube section is fixed on the sliding block. The first tube section is provided with a connecting column and a support block for fixing. The second tube section is provided with an outer ring. The outer ring and the second tube section are provided with through screw holes, and the screw holes are provided with a third bolt.

[0013] As an improvement, a torsion spring is provided at the hinge of the maxillary support plate and the mandibular support plate.

[0014] As an improvement, the inner sides of the maxillary support plate and the mandibular support plate are provided with a slope that gradually decreases from the end to the front.

[0015] As an improvement, the two ends of the adjusting strap are symmetrically provided with Velcro, and the tightness of the two ends of the adjusting strap is adjusted by the Velcro.

[0016] The advantages of this invention are:

[0017] 1. This invention provides stable head fixation and high surgical precision: the arc-shaped headband, adjustable straps, and chin support work together to fix the head and prevent head movement during surgery; the damping pivot and height adjustment structure adapt to different head shapes and chin positions, resulting in better fixation and providing a stable operating environment for medical staff, thus improving surgical precision.

[0018] 2. The opening degree of this invention is precisely adjustable and highly adaptable: the opening distance can be finely adjusted in real time through the anti-slip handle and stud structure to meet different surgical needs; the sliding block and telescopic rod realize the front-back and left-right position adjustment of the components, adapting to patients with different oral cavity sizes and shapes, and has a wide range of applications.

[0019] 3. This invention offers high patient comfort and safety: the silicone padding of the chin support, the inclined design of the support plate, and the torsion spring buffer structure reduce pressure and irritation to the skin, teeth, and gums; each adjustment process is smooth, without sudden force or forced fixation, reducing patient discomfort and risk of injury during the procedure. Attached Figure Description

[0020] Figure 1 This is a structural diagram of an oral surgery opening device in Example 1.

[0021] Figure 2 This is a structural diagram of the mandibular adjustment mechanism in Example 1.

[0022] Figure 3 This is a structural diagram of the chin support in Example 1.

[0023] The diagram is labeled as follows:

[0024] 1. Head fixation components;

[0025] 11. Arc-shaped headband; 111. Adjusting column; 112. Telescopic column; 113. First bolt; 114. Sliding groove; 115. Positioning groove; 12. Adjusting strap;

[0026] 13. Chin support; 131. Damping pivot; 132. Silicone cushion;

[0027] 2. Upper and lower jaw adjustment mechanism;

[0028] 21. Maxillary support plate; 22. Mandibular support plate; 221. L-shaped plate; 222. Inclined surface;

[0029] 23. Support block; 231. Anti-slip handle; 232. Stud;

[0030] 24. Sliding block; 241. Positioning protrusion; 242. Second bolt;

[0031] 25. Telescopic rod; 251. First pipe section; 252. Second pipe section; 253. Connecting column; 254. External connecting ring; 255. Third bolt. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, 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. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0033] In the description of the embodiments of this invention, it should be noted that if terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," or "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use, they are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, terms such as "first," "second," and "third" are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0034] Furthermore, the use of terms such as "horizontal," "vertical," and "sag" does not imply that the component must be absolutely horizontal or suspended, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0035] In the description of the embodiments of the present invention, "multiple" means at least two.

[0036] In the description of the embodiments of the present invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the present invention according to the specific circumstances.

[0037] The present invention will now be described in detail and specifically through specific embodiments to enable a better understanding of the invention. However, the following embodiments do not limit the scope of protection of the present invention.

[0038] Example 1

[0039] This embodiment discloses an oral surgery opening device.

[0040] like Figures 1 to 3 As shown, this embodiment includes a head fixation component 1 and a maxillary and mandibular adjustment mechanism 2, which work together to achieve head fixation and oral cavity opening adjustment. The specific structure is as follows:

[0041] (I) Head Fixation Component 1

[0042] The head fixation component 1 is used to stabilize and fix the patient's head to prevent movement during surgery. It includes an arc-shaped headband 11, an adjustable strap 12, and a chin rest 13. The structure is designed to conform to the contour of the human head, balancing stability and comfort.

[0043] The curved headband 11 and adjusting straps 12: The inner side of the curved headband 11 conforms to the contour of the head (such as the curve of the back of the head and the top of the head), and is made of a lightweight and resilient material to ensure a good fit while avoiding pressure on the head. Adjusting straps 12 are located on both sides of the curved headband 11. The ends of the adjusting straps 12 are symmetrically equipped with Velcro, allowing for flexible adjustment of the strap tightness—simply wrap the strap around the patient's forehead or chin and attach the Velcro to secure it. This adapts to patients with different head circumferences, enhances the stability of head fixation, and prevents headband displacement during surgery.

[0044] The chin support 13 and its height adjustment structure: The chin support 13 has a U-shaped structure that fits the patient's jawline. The inner side is equipped with a silicone pad 132. The silicone pad 132 is soft and elastic and comes into direct contact with the skin of the jaw. It can cushion the pressure of the chin support 13 on the skin, avoid pain or pressure marks caused by prolonged use, and improve patient comfort.

[0045] The bottom of the arc-shaped headband 11 is provided with adjustment posts 111 on both sides, and the bottom of the adjustment posts 111 is provided with telescopic posts 112. The two ends of the chin support 13 are rotatably connected to the bottom of the telescopic posts 112 through damping pivots 131.

[0046] Height adjustment: A first bolt 113 is provided between the adjusting column 111 and the telescopic column 112. Loosening the first bolt 113 allows the telescopic column 112 to be pulled up and down to adjust the height of the chin support 13 to suit patients with different chin positions. After adjustment, tighten the first bolt 113 to fix the relative position of the telescopic column 112 and the adjusting column 111 to ensure the height of the chin support 13 is stable.

[0047] Angle adjustment: The damping pivot 131 allows the chin support 13 to rotate slightly around the bottom of the telescopic column 112. The tilt of the chin support 13 can be finely adjusted according to the angle of the patient's chin, so that the chin support 13 fits the chin contour better, further improving comfort, while avoiding jaw discomfort caused by forced fixation.

[0048] (II) Mandibular Adjustment Mechanism 2

[0049] The maxillary and mandibular adjustment mechanism 2 is used to support the upper and lower jaws and adjust the opening degree. It includes a maxillary support plate 21, a mandibular support plate 22, and an adjustment component, which can realize real-time fine adjustment of the opening distance and position adjustment.

[0050] The adjustment component is connected to the support plate: The adjustment component includes a support block 23, a maxillary support plate 21 and a mandibular support plate 22, which are respectively hinged to the upper and lower ends of the support block 23. A torsion spring is provided at the hinge, which provides a restoring elastic force for the support plate. When no external force is applied, the torsion spring pulls the maxillary and mandibular support plates 22 to close, preventing the support plates from being overly stretched. When adjusting the opening degree, the torsion spring can buffer the stretching force to prevent sudden force from causing discomfort to the patient's jaw.

[0051] The inner sides of the maxillary support plate 21 and the mandibular support plate 22 are provided with inclined surfaces 222 that gradually decrease in size from the distal end to the proximal end. The inclined surfaces 222 can be made of a soft structure to avoid the edges of the support plates directly pressing on the teeth or gums, thus reducing local pressure. The surfaces of the support plates can be made of a smooth material to prevent scratching the oral mucosa. The maxillary support plate 21 and the mandibular support plate 22 are relatively long, and they conform to the trajectory of the mandible moving while the maxilla remains stationary when the mouth is open, thus preventing the mandibular dentition from dislodging from the mandibular support plate 22.

[0052] Opening adjustment structure: The adjustment component is equipped with an anti-slip handle 231, the surface of which has anti-slip texture to facilitate gripping and force application by medical staff and prevent slippage during adjustment. A stud 232 is provided at the front end of the anti-slip handle 231, and a first screw hole is provided in the middle of the support block 23, on which the stud 232 is screwed; L-shaped plates 221 are provided at the ends of the maxillary support plate 21 and the mandibular support plate 22, and the front end of the stud 232 abuts against the inflection point of the L-shaped plate 221.

[0053] When the anti-slip handle 231 is rotated clockwise, the stud 232 advances forward along the first screw hole, pushing the inflection point of the L-shaped plate, causing the maxillary support plate 21 to rotate upward and the mandibular support plate 22 to rotate downward, increasing the distance between them and thus increasing the mouth opening. When the anti-slip handle 231 is rotated counterclockwise, the stud 232 retracts backward, and the torsion spring pulls the maxillary and mandibular support plates 22 back to their original position, decreasing the distance between them and thus decreasing the mouth opening. By rotating the anti-slip handle 231, the mouth opening distance can be precisely adjusted to meet the requirements of different surgeries, and the adjustment process is smooth with no obvious discomfort to the patient.

[0054] Position adjustment structure: The lower part of the arc-shaped headband 11 (the front end of the adjusting post 111) is provided with a sliding groove 114, and positioning grooves 115 are provided on both sides of the sliding groove 114. A sliding block 24 is slidably mounted on the sliding groove 114. Positioning protrusions 241 are provided at the top and bottom of both sides of the sliding block 24. The positioning protrusions 241 cooperate with the positioning grooves 115 to ensure that the sliding block 24 slides in a straight line along the sliding groove 114 and avoids displacement. A second bolt 242 is provided on the outer side of the sliding block 24. Tightening the second bolt 242 can fix the relative position of the sliding block 24 and the adjusting post 111. Loosening it can adjust the position of the sliding block 24 on the sliding groove 114, thereby adjusting the front and back position of the maxillary and mandibular adjustment mechanism 2 to adapt to patients with different oral cavity depths.

[0055] The adjustment component is connected to the sliding block 24 via a telescopic rod 25. The telescopic rod 25 includes a first section 251 and a second section 252. The first section 251 is sleeved on the second section 252, and the second section 252 is fixed to the sliding block 24. The first section 251 is provided with a connecting post 253 and fixed to the support block 23. The second section 252 is provided with an outer ring 254, and the outer ring 254 and the second section 252 are provided with through screw holes. A third bolt 255 is provided in the screw holes. Loosening the third bolt 255 allows the first section 251 to slide along the second section 252, adjusting the length of the telescopic rod 25, thereby adjusting the left and right positions of the maxillary and mandibular adjustment mechanism 2 to accommodate patients with different oral cavity widths. After adjustment, tightening the third bolt 255 fixes the length of the telescopic rod 25, ensuring the stability of the component position.

[0056] I. Preoperative preparation and head fixation

[0057] Initial device adjustment and adaptation: Based on the patient's head shape, loosen the first bolt 113 between the adjusting column 111 and the telescopic column 112, and pull the telescopic column 112 up and down to adjust the height of the chin support 13 so that the chin support 13 fits the position of the patient's chin; after adjustment, tighten the first bolt 113 to fix it. Loosen the second bolt 242 on the sliding block 24 and the third bolt 255 on the telescopic rod 25, and move the upper and lower jaw adjustment mechanism 2 to a position that roughly fits the front-back and left-right positions of the patient's oral cavity, but do not fix it for now.

[0058] Head fixation procedure: Have the patient sit upright or lie down, place the curved headband 11 against the back of the patient's head, adjust the strap 12 to wrap around the patient's forehead (or chin), and adjust the tightness of the strap with Velcro to ensure that the headband is stable and does not wobble; place the patient's chin on the silicone pad 132 of the chin support 13, and finely adjust the chin support 13 according to the chin angle (using the damping pivot 131) so that the chin support 13 completely fits the chin and improves the patient's comfort.

[0059] II. Adjustment of Mandible and Jawline and Setting of Mouth Opening

[0060] Precise adjustment of component position: Loosen the second bolt 242 of the sliding block 24, push the sliding block 24 to move back and forth along the sliding groove 114, so that the upper and lower jaw support plate 22 is aligned with the patient's upper and lower jaw teeth; loosen the third bolt 255 of the telescopic rod 25, pull the first tube section 251 to adjust the length of the telescopic rod 25, so that the support plate is located in the middle of the oral cavity; after the adjustment is completed, tighten the second bolt 242 and the third bolt 255 respectively to fix the position of the sliding block 24 and the telescopic rod 25.

[0061] Oral opening adjustment: The medical staff holds the non-slip handle 231 and slowly rotates it clockwise. The stud 232 moves forward and pushes the inflection point of the L-shaped plate. The maxillary support plate 21 rotates upward and the mandibular support plate 22 rotates downward, and the patient's mouth gradually opens. The patient's reaction is observed and the rotation angle is finely adjusted according to the needs of the surgery until the oral opening reaches the required size for the surgery (such as a larger oral opening for tooth extraction and a moderate oral opening for root canal treatment). If the patient feels uncomfortable during the adjustment process, the rotation can be paused or slightly rotated counterclockwise to reduce the oral opening to ensure the patient's comfort.

[0062] III. Intraoperative maintenance and postoperative disassembly

[0063] Intraoperative monitoring: During the operation, regularly check whether the bolts of the device are loose. If the opening is off, the anti-slip handle 231 can be slightly rotated for fine adjustment. Pay attention to the patient's facial expression and deal with any discomfort feedback in a timely manner.

[0064] Postoperative disassembly: After the surgery, rotate the anti-slip handle 231 counterclockwise, the stud 232 will retract, the torsion spring will pull the upper and lower jaw support plates 22 to close, and the patient's mouth can close naturally; loosen the Velcro of the adjustment strap 12 and remove the arc-shaped headband 11; finally, loosen all the bolts, reset the device components, clean and disinfect them, and store them for future use.

[0065] The specific embodiments of the present invention have been described in detail above, but they are merely examples, and the present invention is not equivalent to the specific embodiments described above. For those skilled in the art, any equivalent modifications and substitutions to the present invention are also within the scope of the present invention. Therefore, all equivalent transformations and modifications made without departing from the spirit and scope of the present invention should be covered within the scope of the present invention.

Claims

1. An oral surgical opening device, characterized in that, Includes a head fixation component (1) and a jaw adjustment mechanism (2); The head fixation assembly (1) includes an arc-shaped headband (11), an adjustment strap (12), and a chin support (13). The inner side of the arc-shaped headband (11) conforms to the contour of the head. The adjustment strap (12) is set on both sides of the arc-shaped headband (11). The chin support (13) has a U-shaped structure. The two ends of the chin support (13) are rotatably connected to the lower part of the arc-shaped headband (11) through a damping pivot (131). The inner side of the chin support (13) is provided with a silicone pad (132). The upper and lower jaw adjustment mechanism (2) includes an upper jaw support plate (21), a lower jaw support plate (22), and an adjustment component. The lower part of the arc-shaped headband (11) is provided with a sliding groove (114). The adjustment component is slidably connected to the sliding groove (114) through a telescopic rod (25). The adjustment component is provided with an anti-slip knob (231). The distance between the upper jaw support plate (21) and the lower jaw support plate (22) is adjusted by rotating the anti-slip knob.

2. The oral surgical opening device according to claim 1, characterized in that, The arc-shaped headband (11) has adjustment posts (111) on both sides of its bottom. The adjustment posts (111) have telescopic posts (112) at their bottom. The two ends of the chin support (13) are rotatably connected to the bottom of the telescopic posts (112). A first bolt (113) is provided between the adjustment posts (111) and the telescopic posts (112).

3. The oral surgical opening device according to claim 2, characterized in that, The adjustment assembly includes a support block (23), and the maxillary support plate (21) and mandibular support plate (22) are respectively hinged at the upper and lower ends of the support block (23). The anti-slip handle (231) has a stud (232) at its front end. The support block (23) has a first screw hole in its middle. The stud (232) is screwed into the first screw hole. The maxillary support plate (21) and mandibular support plate (22) have L-shaped plates (221) at their ends. The front end of the stud (232) abuts against the inflection point of the L-shaped plate (221) to open up the maxillary support plate (21) and mandibular support plate (22).

4. The oral surgical opening device according to claim 3, characterized in that, The sliding groove (114) is provided at the front end of the adjusting column (111). Positioning grooves (115) are provided on both sides of the sliding groove (114). A sliding block (24) is slidably provided on the sliding groove (114). Positioning protrusions (241) are provided at the top and bottom of both sides of the sliding block (24). The positioning protrusions (241) cooperate with the positioning grooves (115). A second bolt (242) is provided on the outer side of the sliding block (24). The second bolt (242) fixes the sliding block (24) and the adjusting column (111).

5. The oral surgical opening device according to claim 4, characterized in that, The telescopic rod (25) includes a first tube section (251) and a second tube section (252). The first tube section (251) is sleeved on the second tube section (252). The second tube section (252) is fixed on the sliding block (24). The first tube section (251) is provided with a connecting post (253) and fixed to the support block (23). The second tube section (252) is provided with an outer ring (254). The outer ring (254) and the second tube section (252) are provided with through screw holes. The screw holes are provided with a third bolt (255).

6. The oral surgical opening device according to claim 3, characterized in that, A torsion spring is provided at the hinge of the maxillary support plate (21) and the mandibular support plate (22).

7. An oral surgical opening device according to claim 3, characterized in that, The maxillary support plate (21) and the mandibular support plate (22) have an inclined surface (222) that gradually decreases from the end to the front.

8. An oral surgical opening device according to claim 1, characterized in that, The two ends of the adjusting strap (12) are symmetrically provided with Velcro, and the tightness of the two ends of the adjusting strap (12) is adjusted by the Velcro.

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