Intermaxillary positioning and navigation biteplate

Abstract

The invention discloses an intermaxillary positioning and navigation biteplate, which belongs to the technical field of medical instruments and comprises a U-shaped biteplate, the biteplate is provided with an upper surface and a lower surface, the upper surface is provided with an upper dentition mark matched with an upper dentition, the lower surface is provided with a lower dentition mark matched with a lower dentition, and at least five developing mark points are distributed on the biteplate. Developing materials are arranged at the developing mark points, a lip-cheek side face is arranged on the periphery of the biteplate, developing mark points are arranged on the lip-cheek side face, and the developing mark points are distributed in the extending direction of the lip-cheek side face at intervals. According to the invention, high-precision jaw registration can be realized, and lossless development and jaw positioning of a patient can be realized.

Description

Technical Field

[0001] The invention belongs to the technical field of medical devices, and in particular relates to an inter-maxillary positioning navigation occlusal plate. Background Art

[0002] In maxillomandibular surgery, the use of navigation and registration devices is essential to ensure surgical accuracy. The commonly used navigation registration methods in clinical practice mainly include two technical solutions: face registration and point registration. The face registration method usually completes the registration of the patient's facial structure by fixing the reference frame at the front skull top and using an infrared scanner to scan the soft tissue landmarks of the forehead, nasal root and bilateral infraorbital area. This method is applicable when the patient's face is not obviously swollen, but if the patient's facial soft tissue is deformed due to obesity or swelling, the accuracy of the registration will be greatly affected, resulting in increased navigation positioning errors during surgery.

[0003] The point registration method is to fix the reference frame to the front skull, and use the probe to select anatomical landmarks such as the inner canthus, outer canthus, nasal root, and maxillary cusp for registration. This method is mostly used for navigation registration of the skull or maxilla. However, point registration has certain limitations for the precise registration of the mandible, because the position of the mandible relative to other jaws is unstable and its position cannot be accurately determined by simple point registration. This leads to inaccurate surgical navigation of the mandible, affecting the postoperative effect. Another common registration method is self-tapping screw + bite plate registration. In this method, the maxillary and mandibular bones are fixed as a whole by a bite plate, and self-tapping screws are implanted on the labial and buccal sides of the alveolar processes of the maxillary and mandibular bones. A preoperative CT scan is then performed, and the landmarks are registered using the intraoperative reference frame and probe. The landmarks of this method are closer to the maxillary and mandibular bones, so they can more accurately reflect the position of the maxillary and mandibular bones than face registration and point registration. However, the use of self-tapping screws has several disadvantages: first, self-tapping screws will produce metal artifacts in CT images, affecting the clarity of the image, which is not conducive to the accurate selection of landmark points; second, the implantation of self-tapping screws is an invasive operation, which increases the patient's pain and the risk of postoperative infection; finally, the cost of self-tapping screws is high and it is difficult to be widely accepted.

[0004] The US invention patent with application number US17679726 discloses a light-based brace seat device and method, the device has a bite plate, the bite plate has a light-emitting element for contacting the brace, and the brace placement device is to place the oral piece on the brace, apply light radiation during a predetermined number of sessions during the entire predetermined treatment period, wherein the matching ratio between the brace and the teeth is adjusted based on the light-emitting element. The invention adapts the teeth through the light-emitting element and does not cause discomfort to the jaw muscles. The bite plate of the prior art is difficult to accurately display the position information of the jaw during surgery while maintaining the fit with the teeth, which brings inconvenience to the jaw reconstruction surgery. Summary of the invention

[0005] The object of the present invention is to provide an inter-maxillary positioning navigation bite plate with high navigation accuracy and stable operation safety in jaw surgery.

[0006] The technical solution adopted by the present invention to achieve the above-mentioned purpose is: An intermaxillary positioning navigation occlusal plate comprises: a U-shaped occlusal plate, the occlusal plate having an upper surface and a lower surface, the upper surface having an upper dentition imprint matching the upper dentition, the lower surface having a lower dentition imprint matching the lower dentition, at least five developing marking points distributed on the occlusal plate, and developing materials are arranged at the developing marking points. The patient's data is scanned before surgery to generate a personalized bite plate, and the upper and lower dentition impressions of the bite plate are matched with the patient's upper and lower dentition respectively to ensure that the dentition impressions are completely matched with the patient's maxillofacial surface, so that the patient's upper and lower dentition are fixed in position through the bite plate, so that the bite plate is highly consistent with the patient's jaw anatomical morphology, ensuring stability and accuracy during surgery, and avoiding the possibility of errors caused by the loose fit of the traditional universal bite plate and the patient's teeth, resulting in misalignment; the developing material at the developing mark point can be clearly displayed in the CT image, providing the bite plate's registration and positioning in the patient's mouth during surgery. Compared with the traditional registration using self-tapping screws, on the one hand, it reduces the additional damage of the bite plate to the patient's oral cavity, and on the other hand, it avoids the influence of the metal artifacts of the self-tapping screws on the CT image during the CT scan, thereby improving the registration accuracy in jaw repair surgery.

[0007] Preferably, the periphery of the bite plate has a lip and cheek side surface, and the lip and cheek side surface is provided with developing marking points, and the developing marking points are distributed at intervals along the extension direction of the lip and cheek side surface. The developing marking points distributed on the lip and cheek side surface can form the contour display of the outer curved surface of the bite plate, and the position of the lip and cheek side surface contour during the operation can be formed according to the above-mentioned developing marking points, that is, the CT image display of the outer curved surface contour of the bite plate is realized through a small number of developing marking points, which can better and more accurately reflect the position of each part of the bite plate and improve the registration accuracy during the operation; and during the operation, the path formed by the developing marking points on the lip and cheek side surface can realize accurate point registration while using the path formed by each marking point to form auxiliary registration, so that the registration during the operation is more efficient, and the frequency of repeated adjustment of the marking points during the operation is reduced, which can shorten the operation time and improve the efficiency of the jaw repair operation on the one hand, and reduce the discomfort caused by the adjustment of the marking points to the patient's oral cavity on the other hand.

[0008] Preferably, the developing marking point includes a groove opened on the bite plate, and the groove can be filled with developing material. By inserting the developing material in the groove, the developing material is stably arranged in the bite plate. In the CT image, the developing material is used to achieve a stable registration basis, and it is also convenient to replace the developing material, so that different developing materials can be replaced according to different surgical needs, which increases the application range of the bite plate; compared with traditional self-tapping screw development, the cost of the developing material is lower, which can reduce the economic burden of the patient. At the same time, the developing material can contact the patient's oral muscles non-invasively, which reduces the possibility of the bite plate damaging the patient's oral cavity due to registration during the operation, reduces the incidence of postoperative complications caused by trauma, and further reduces additional medical expenses after surgery.

[0009] Preferably, electronic components are implanted in the bite plate, and the electronic components are wirelessly connected to a navigation system, and the navigation system is used to provide the dynamic position of the jaw. The electronic components include integrated micro sensors and dynamic navigation chips, which can be connected to an external navigation system through wireless technology during surgery to monitor and calibrate the jaw position in real time, avoiding the limitations of static marking points, that is, converting traditional static development marks into a dynamic real-time feedback system, which can greatly improve the accuracy and safety of the surgery, especially in complex mandibular repositioning surgery, ensuring the real-time and reliability of surgical navigation, and facilitating the operator to adjust and repair the mandibular position according to different intraoperative situations.

[0010] Preferably, a first groove is provided at the edge of the opening of the upper dental impression on the upper surface. The first groove has a surface away from the upper dental impression and diffuses upward to the outside. A second groove is provided on the surface. The second groove is connected to the inner wall of the upper dental impression. The second groove has a groove bottom inclined downward on the inner side of the upper dental impression. Under the premise of ensuring that the patient's upper dental impression can accurately match the upper dental impression, the first groove enlarges the opening of the upper dental impression on the upper surface, which is beneficial for the patient's dental impression to enter the bite plate to form a matching guide, while increasing the installation speed and reducing the possibility of compression damage to the patient's teeth and periodontal muscles at the edge of the dental impression during the installation of the bite plate. Since the bite plate is customized for the patient before the operation, the muscles around the patient's teeth, such as the gums, may swell during the operation after the customized data is collected, resulting in the upper surface of the customized bite plate contacting and squeezing the swollen muscles when the bite plate is positioned and installed in the patient's mouth. , resulting in poor fit between the occlusal plate and the teeth and damage to the swollen muscles, leading to postoperative oral complications. The first slot can adapt to the swollen periodontal muscles, improves the matching accuracy of the occlusal plate and the dentition, solves the problem of poor fit of the occlusal plate due to oral muscle problems, and improves the accuracy of surgical registration; the second slot is arranged on the surface and has an inclined slot bottom, and the muscle secretions around the attachments on the teeth can be collected through the surface and the second slot, and the collected secretions are concentrated into the upper dentition imprint through the surface and the slot bottom, avoiding the accumulation of secretions in the patient's mouth and causing discomfort in the patient's throat.

[0011] Preferably, the bite plate is provided with a through hole, the through hole connects the upper dentition impression and the lower dentition impression, and the through hole is located in the middle of each impression of the upper dentition impression and the lower dentition impression. The through hole ensures the connection between the upper dentition impression and the lower dentition impression, that is, oral secretions can reach the upper dentition impression and the lower dentition impression through the through hole, which helps to form a wrapping layer around the teeth, reduces the excessive wear of the bite plate and the teeth when the bite plate is removed due to the close contact between the bite plate and the teeth, and reduces the possibility of causing damage to the tooth surface.

[0012] Preferably, the bite plate is provided with a slot at the outermost edge of the middle part of the lip and cheek side, and a plug-in plate is detachably connected in the slot, and part of the plug-in plate can enter the patient's mouth with the bite plate. The plug-in plate can be plugged into the slot, and the operator can hold the plug-in plate to send the bite plate into the patient's mouth for occlusal installation. Compared with directly placing the bite plate into the patient's mouth by hand, on the one hand, the possibility of hand bacteria contaminating the patient's oral environment is reduced, and on the other hand, the plug-in plate is located outside the patient's mouth, and the bite plate can be adjusted before installation by adjusting the plug-in plate, avoiding damage to the operator's fingers when the patient bites, improving the efficiency and safety of the operator installing the bite plate in the patient's mouth, and providing higher operability; when the bite plate needs to be removed after surgery, the bite plate can be easily loosened on the dentition by adjusting the plug-in plate, facilitating the removal of the bite plate, reducing the possibility of slipping due to the attachment of secretions when removing the bite plate barehanded, speeding up the removal of the bite plate, and reducing the time the bite plate is in the patient's mouth, so as to reduce the discomfort of the patient's mouth.

[0013] Preferably, the plug plate includes a plate body and an elastic strip that cooperates with the slot, the elastic strip is connected to both sides of the plate body, the elastic strip can be squeezed close to and away from the plate body, and the elastic strip is pressed against the inner wall of the slot. The elastic strips squeezed on both sides of the plate body are close to the plate body, and the plug plate can enter the slot together with the elastic strip. The elastic strip is released, and the elastic strip recovers its deformation and moves away from the plate body in the slot, so that the elastic strip is in close contact with the slot. The setting of the elastic strip facilitates the close connection of the plug plate in the slot, prevents the plug plate from being easily separated from the slot, and improves the efficiency of adjusting and positioning the bite plate in the oral cavity. On the other hand, the plug plate can be quickly separated from the slot by squeezing the elastic strip, so that the friction between the plug plate and the slot when the plug plate is separated can be avoided, which causes the bite plate to be pulled, causing pressure damage to the patient's teeth.

[0014] Preferably, the U-shaped bite plate has an auxiliary part on the inner side of the opening, and the auxiliary part includes symmetrically arranged baffles, which extend along the inner wall of the bite plate opening and can contact the side of the patient's tongue. The baffles are connected to a base, and the base can contact the bottom of the patient's tongue.

[0015] Compared with the prior art, the present invention has the following beneficial effects: the customized bite plate is adapted to the individual characteristics of the patient, which can effectively reduce the registration error caused by poor adaptation; compared with the traditional self-tapping screws, the present invention realizes the navigation positioning of the bite plate through the developing material while avoiding additional trauma to the patient's oral cavity; compared with the traditional self-tapping screws, the developing material reduces the patient's medical expenses and reduces the patient's economic burden; the developing material is arranged in the groove to replace the traditional self-tapping screw, which reduces the influence of metal artifacts on CT images and improves the registration accuracy; the developing mark on the lip and cheek side forms a contour mark, which can assist point registration to reduce The frequency of adjusting the marking points can shorten the operation time and reduce the patient's discomfort. The development marking points can realize dynamic feedback through electronic components and the navigation system, which is conducive to maintaining a high level of navigation accuracy in complex operations, reducing errors and improving postoperative effects. The first slot and the second slot collect periodontal secretions to reduce the possibility of pharyngeal discomfort in patients. The first slot guides the installation of the bite plate to reduce the possibility of contact damage to the periodontal muscles caused by the bite plate. The first slot can ensure the matching degree between the bite plate and the teeth when the patient's periodontal muscles are swollen, reduce the loosening of the bite plate caused by low matching, and stabilize the registration accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of an intermaxillary positioning navigation bite plate; Figure 2 A top view schematic diagram of an intermaxillary positioning navigation bite plate; Figure 3 This is a schematic diagram of an intermaxillary positioning navigation bite plate from a bottom up view; Figure 4 It is a schematic diagram of the slot and the visible groove position; Figure 5 It is a schematic diagram of the plug board structure; Figure 6 It is a schematic diagram of the auxiliary parts structure; Figure 7 Schematic diagram of the inclined surface of the substrate.

[0017] Figure numbers: occlusal plate 1; upper surface 11; upper dentition imprint 110; lower surface 12; lower dentition imprint 120; labial and buccal side surface 13; developing mark point 2; groove 21; developing material 22; first groove body 3; second groove body 4; through hole 5; slot 6; plug plate 7; plate body 71; elastic strip 72; auxiliary part 8; baffle 81; base body 82; inclined surface 83; protrusion 84. DETAILED DESCRIPTION

[0018] The technical solution of the present invention is further described in detail below in conjunction with specific implementations and drawings: Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] Embodiment 1: See attached Figure 1 -Attached Figure 4 A jaw positioning navigation occlusal plate comprises: a U-shaped occlusal plate 1, the occlusal plate 1 having an upper surface 11 and a lower surface 12, the upper surface 11 having an upper dentition imprint 110 matching the upper dentition, the lower surface 12 having a lower dentition imprint 120 matching the lower dentition, at least five developing marking points 2 are distributed on the occlusal plate 1, and developing materials 22 are provided at the developing marking points 2.

[0020] The personalized bite plate 1 is generated by scanning the patient's data before the operation, and the personalized bite plate 1 is realized by 3D printing technology. The upper dentition imprint 110 and the lower dentition imprint 120 of the bite plate 1 are matched with the upper and lower dentition of the patient respectively, ensuring that the dentition imprint is completely matched with the patient's maxillofacial surface, so that the upper and lower dentition of the patient are fixed in position through the bite plate 1, so that the bite plate 1 is highly consistent with the anatomical morphology of the patient's jaw, ensuring the stability and accuracy during the operation, avoiding the possibility of errors caused by the loose fit between the traditional universal bite plate 1 and the patient's teeth and the dislocation; the developing material 22 at the developing mark point 2 can be clearly displayed in the CT image, providing the registration and positioning of the bite plate 1 in the patient's mouth during the operation. Compared with the traditional registration using self-tapping screws, on the one hand, it reduces the additional damage of the bite plate 1 to the inside of the patient's mouth, and on the other hand, it avoids the influence of the metal artifacts of the self-tapping screws on the CT image during the CT scanning process, and improves the registration accuracy in the jaw repair operation.

[0021] The developing material 22 is a material that can be clearly developed in a CT scan, and the developing material 22 includes but is not limited to: gutta-percha tips, dental light-curing resins, amalgam, steel wires, embedded iodine balls, orthodontic brackets or root canal pastes.

[0022] The periphery of the bite plate 1 has a labial and buccal side surface 13, and the labial and buccal side surface 13 is provided with developing marking points 2, and the developing marking points 2 are distributed at intervals along the extension direction of the labial and buccal side surface 13. The developing marking points 2 distributed on the labial and buccal side surface 13 can form the outer curved surface contour display of the bite plate 1, and the position of the curved surface contour of the labial and buccal side surface 13 during the operation can be formed according to the above-mentioned developing marking points 2, that is, the CT image display of the outer curved surface contour of the bite plate 1 is realized by a small number of developing marking points 2, which can better and more accurately reflect the position of each part of the bite plate 1, and improve the registration accuracy during the operation; and during the operation, the path formed by the developing marking points 2 on the labial and buccal side surface 13 can realize accurate point registration while using the path formed by each marking point to form auxiliary registration, so that the registration during the operation is more efficient, and the frequency of repeated adjustment of the marking points during the operation is reduced, which can shorten the operation time and improve the efficiency of the jaw repair operation on the one hand, and reduce the discomfort caused by the adjustment of the marking points to the patient's oral cavity on the other hand.

[0023] The development mark point 2 can also be set at: a position of the upper surface 11 close to the lip and cheek side surface 13; a position of the lower surface 12 close to the lip and cheek side surface 13.

[0024] The development marking point 2 includes a groove 21 opened on the bite plate 1 , and the groove 21 can be filled with a development material 22 .

[0025] By inserting the developing material 22 into the groove 21, the developing material 22 is stably arranged in the bite plate 1. In the CT image, the developing material 22 is used to realize a stable registration basis, and it is also convenient to replace the developing material 22, so that different developing materials 22 can be replaced according to different surgical needs, thereby increasing the application range of the bite plate 1. Compared with the traditional self-tapping screw development, the developing material 22 has a lower cost, which can reduce the economic burden of the patient. At the same time, the developing material 22 can contact the muscles inside the patient's mouth non-invasively, reducing the possibility of the bite plate 1 damaging the patient's mouth due to registration during the operation, reducing the incidence of postoperative complications caused by trauma, and further reducing additional medical expenses after the operation.

[0026] The occlusal plate 1 has electronic components implanted therein, and the electronic components are wirelessly connected to a navigation system, and the navigation system is used to provide the dynamic position of the jaw.

[0027] The electronic components include integrated micro sensors and dynamic navigation chips. The integrated micro sensors and dynamic navigation chips can be connected to the external navigation system through wireless technology during the operation to monitor and calibrate the jaw position in real time, avoiding the limitations of static marking points, that is, converting traditional static development marks into a dynamic real-time feedback system, which can greatly improve the accuracy and safety of the operation, especially in complex mandibular reduction surgery, ensuring the real-time and reliability of surgical navigation, and facilitating the surgeon to adjust and repair the mandibular position according to different intraoperative situations.

[0028] A first groove body 3 is provided at the opening edge of the upper surface 11 of the upper dental impression 110. The first groove body 3 has a surface that is away from the upper dental impression 110 and spreads upward to the outside. A second groove body 4 is provided on the surface. The second groove body 4 is connected to the inner wall of the upper dental impression 110. The second groove body 4 has a groove bottom that is inclined downward on the inner side of the upper dental impression 110.

[0029] On the premise of ensuring that the patient's upper dentition can accurately match the upper dentition imprint 110, the first slot 3 enlarges the opening of the upper dentition imprint 110 on the upper surface 11, which is conducive to the patient's dentition entering the dentition imprint of the bite plate 1 to form a matching guide, thereby increasing the installation speed and reducing the possibility of squeezing and damaging the patient's teeth and periodontal muscles at the edge of the tooth imprint during the installation of the bite plate 1; since the bite plate 1 is customized for the patient before the operation, the muscles around the patient's teeth, such as the gums, may swell during the operation, resulting in the upper surface 11 of the customized bite plate 1 coming into contact with the swollen muscles when the bite plate 1 is positioned and installed in the patient's mouth. The first groove body 3 can adapt to the swollen periodontal muscles, improve the matching accuracy of the bite plate 1 and the dentition, solve the problem of poor adaptability of the bite plate 1 due to oral muscle problems, and improve the accuracy of surgical registration; the second groove body 4 is arranged on the surface and has an inclined groove bottom, and the muscle secretions around the attachments on the teeth can be collected through the surface and the second groove body 4, and the collected secretions are concentrated in the upper dentition imprint 110 through the surface and the groove bottom, so as to avoid the accumulation of secretions in the patient's mouth and cause discomfort in the patient's throat.

[0030] The occlusal plate 1 is provided with a through hole, which connects the upper dentition imprint 110 and the lower dentition imprint 120 . The through hole is located in the middle of each imprint of the upper dentition imprint 110 and the lower dentition imprint 120 .

[0031] The through hole ensures the connection between the upper dental impression 110 and the lower dental impression 120, that is, oral secretions can reach the upper dental impression 110 and the lower dental impression 120 through the through hole, which helps to form a wrapping layer around the teeth, reduce the tight contact between the bite plate 1 and the teeth, and cause excessive wear between the bite plate 1 and the teeth when the bite plate 1 is taken out, thereby reducing the possibility of causing damage to the tooth surface.

[0032] See attached Figure 5 The bite plate 1 is provided with a slot 6 at the outermost edge of the middle part of the labial and buccal side 13, and a plug plate 7 is detachably connected to the slot 6, and a part of the plug plate 7 can enter the patient's mouth together with the bite plate 1.

[0033] The insert plate 7 can be inserted into the slot 6, and the operator can hold the insert plate 7 to send the bite plate 1 into the patient's mouth for occlusal installation. Compared with directly placing the bite plate 1 into the patient's mouth by hand, on the one hand, the possibility of hand bacteria contaminating the patient's oral environment is reduced, and on the other hand, the insert plate 7 is partially located outside the patient's mouth, and the bite plate 1 can be adjusted before installation by adjusting the insert plate 7 to avoid damage to the operator's fingers when the patient bites, thereby improving the efficiency and safety of the operator in installing the bite plate 1 in the patient's mouth and providing higher operability; when the bite plate 1 needs to be removed after the operation, the insert plate 7 can be adjusted to facilitate the loosening of the bite plate 1 on the dentition, facilitate the removal of the bite plate 1, reduce the possibility of slipping due to the adhesion of secretions when the bite plate 1 is removed by hand, speed up the removal speed of the bite plate 1, and reduce the time the bite plate 1 is in the patient's mouth, so as to reduce the discomfort of the patient's mouth.

[0034] The insert plate 7 includes a plate body 71 and an elastic strip 72 that cooperate with the slot 6. The elastic strip 72 is connected to both sides of the plate body 71. The elastic strip 72 can be squeezed to move closer to and away from the plate body 71, and the elastic strip 72 is pressed against the inner wall of the slot 6. The elastic strip 72 squeezed on both sides of the plate body 71 moves closer to the plate body 71. At this time, the insert plate 7 can enter the slot 6 together with the elastic strip 72. When the elastic strip 72 is released, the elastic strip 72 recovers its deformation and moves away from the plate body 71 in the slot 6, so that the elastic strip 72 is in close contact with the slot 6. The setting of the elastic strip 72 facilitates the close connection of the insert plate 7 in the slot 6, prevents the insert plate 7 from easily detaching from the slot 6, and improves the efficiency of adjusting and positioning the bite plate 1 in the oral cavity. On the other hand, the insert plate 7 can be quickly detached from the slot 6 by squeezing the elastic strip 72, so that the friction between the insert plate 7 and the slot 6 when the insert plate 7 is detached can be avoided, which causes the bite plate 1 to be pulled, causing pressure damage to the patient's teeth.

[0035] See attached Figure 6 The U-shaped bite plate 1 has an auxiliary part 8 on the inner side of the opening. The auxiliary part 8 includes a symmetrically arranged baffle 81, which extends along the inner wall of the opening of the bite plate 1. The baffle 81 can contact the side of the patient's tongue. The baffle 81 is connected to a base 82, and the base 82 can contact the bottom of the patient's tongue.

[0036] Embodiment 2: See attached Figure 7 On the basis of the first embodiment of the present invention, the base 82 is fixed to the side of the bottom of the baffle 81 away from the bite plate 1, and the base 82 has an inclined surface 83 extending downwardly from the U-shaped opening of the bite plate 1, and the inclined surface 83 has a corrugated protrusion 84, and a collecting groove is formed below the inclined surface 83 between adjacent protrusions 84.

[0037] The auxiliary component 8 also includes a connecting plate 85, which has a socket in the middle of the inner side of the bite plate 1. The connecting plate 85 has an insertion rod 86 that cooperates with the socket. The connecting plate 85 is assembled with the bite plate 1 by inserting the insertion rod 86 in the socket. The baffle 81 is fixed on both sides of the connecting plate 85 and close to the inner wall of the bite plate 1.

[0038] When the bite plate 1 is extended into the patient's oral cavity, the inclined surface 83 of the base 82 can contact the patient's tongue, and as the bite plate 1 continues to be extended, the patient's tongue is lifted up by the inclined surface 83 of the base 82 as a whole, and at the same time, the side of the patient's tongue is limited by the blocking plate 81 to achieve the stability of the patient's tongue position during the operation. On the one hand, it reduces the risk of the patient's tongue accidentally contacting the bite plate 1 or the developing material 22 during the operation, affecting the intraoperative registration image, and avoids the loosening of the bite plate 1 resulting in a decrease in the registration accuracy. On the other hand, it avoids the patient's tongue discomfort caused by unnatural lifting and wriggling of the tongue, thereby improving the patient's comfort after the operation.

[0039] During the operation, saliva is likely to be continuously produced in the patient's mouth. The base 82 lifts the patient's tongue through the inclined surface 83, so that the root of the patient's tongue is lifted to a certain height. The saliva flow is slowed down and eased by the protrusion 84 on the inclined surface 83. At the same time, the saliva is collected by the collection groove formed between the protrusions 84, so as to avoid excessive saliva secretion from the patient's mouth during the operation and quickly reach the pharynx, causing discomfort in the pharynx or even suffocation of the patient, thereby ensuring the patient's breathing smoothness during the mandibular surgery and improving the patient's breathing safety during the operation.

[0040] The corrugated protrusion 84 can scrape off the attachments on the bottom of the patient's tongue to prevent the attachments from affecting the development image and interfering with the registration process, thereby improving the stability of the registration process.

[0041] The arrangement of the connecting plate 85 and the inserting rod 86 realizes the combined connection between the bite plate 1 and the auxiliary component 8, thereby reducing the manufacturing difficulty.

[0042] There is a distance between the blocking piece 81 and the inner side wall of the opening of the bite plate 1 . The blocking piece 81 is an elastic member, and the blocking piece 81 can swing at the connection with the connecting plate 85 .

[0043] Since there is a gap between the baffle 81 and the inner side of the opening of the bite plate 1, after the base 82 lifts the tongue, the baffle 81 can adapt to the current state of the patient's tongue being stretched out to form a lateral limit, thereby preventing the patient's tongue from being squeezed and feeling uncomfortable; On the other hand, the auxiliary piece 8 does not need to be customized for each patient, and the baffle 81 can be deformed and swung in the space to adapt to the tongues of different patients, thereby improving the applicability of the device. By assembling the customized bite plate with the auxiliary piece that can adapt to different patients, the combined device can be well adapted to the patient, providing comfort and safety during the operation.

[0044] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. An intermaxillary positioning navigation occlusal plate, comprising: A U-shaped occlusal plate (1), the occlusal plate (1) having an upper surface (11) and a lower surface (12), characterized in that: the upper surface (11) has an upper dentition imprint (110) matching the upper dentition, the lower surface (12) has a lower dentition imprint (120) matching the lower dentition, at least five developing marking points (2) are distributed on the occlusal plate (1), and developing material (22) is provided at the developing marking points (2).

2. The intermaxillary positioning navigation bite plate according to claim 1 is characterized by: The periphery of the occlusal plate (1) has a lip and cheek side surface (13), and the developing marking points (2) are arranged on the lip and cheek side surface (13). The developing marking points (2) are distributed at intervals along the extension direction of the lip and cheek side surface (13).

3. The intermaxillary positioning navigation bite plate according to claim 1 is characterized by: The development marking point (2) comprises a groove (21) opened on the occlusal plate (1), and the development material (22) can be filled in the groove (21).

4. The intermaxillary positioning navigation bite plate according to claim 3 is characterized by: A micro sensor can be placed in the groove (21), and the groove (21) is filled with the developing material (22) and one of the micro sensor.

5. The intermaxillary positioning navigation bite plate according to claim 1 is characterized by: An electronic component is implanted in the bite plate (1), and the electronic component is wirelessly connected to a navigation system, and the navigation system is used to provide the dynamic position of the jaw.

6. The intermaxillary positioning navigation bite plate according to claim 1, characterized in that: The upper dental impression (110) is provided with a first groove body (3) at the opening edge of the upper surface (11), the first groove body (3) having a surface away from the upper dental impression (110) and spreading upward to the outside, a second groove body (4) is provided on the surface, the second groove body (4) is connected to the inner wall of the upper dental impression (110), and the second groove body (4) has a groove bottom inclined downward to the inner side of the upper dental impression (110).

7. The intermaxillary positioning navigation bite plate according to claim 1, characterized in that: The occlusal plate (1) is provided with a through hole (5), the through hole (5) connecting the upper dentition impression (110) and the lower dentition impression (120), and the through hole (5) is located in the middle of each impression of the upper dentition impression (110) and the lower dentition impression (120).

8. The intermaxillary positioning navigation occlusal plate according to claim 1, characterized in that: The bite plate (1) is provided with a slot (6) at the outermost edge of the middle part of the labial and buccal side surfaces (13), and a plug plate (7) is detachably connected to the slot (6), and a portion of the plug plate (7) can enter the patient's oral cavity together with the bite plate (1).

9. The intermaxillary positioning navigation bite plate according to claim 8, characterized in that: The plug board (7) comprises a plate body (71) matched with the slot (6) and an elastic strip (72), wherein the elastic strip (72) is connected to both sides of the plate body (71), and the elastic strip (72) can be moved closer to and away from the plate body (71) by being squeezed, and the elastic strip (72) is pressed tightly against the inner wall of the slot (6).

10. The intermaxillary positioning navigation bite plate according to claim 1, characterized in that: The U-shaped bite plate (1) has an auxiliary part (8) on the inner side of the opening, and the auxiliary part (8) includes a symmetrically arranged baffle (81), and the baffle (81) extends along the inner side wall of the bite plate (1) opening, and the baffle (81) can contact the side of the patient's tongue, and the baffle (81) is connected to a base (82), and the base (82) can contact the bottom of the patient's tongue.

Images