A support system for oral opening

Abstract

The present invention discloses a support system for oral opening, including a split oral bracket and a support tool. The split oral bracket includes a support plate and two upper and lower bite block seats. The upper and lower ends of the support plate are both provided with block seat mounting heads. The bite block seat is provided with a first block seat socket for cooperating with the block seat mounting head. The support tool includes a support mechanism and a mouth opening drive mechanism. The support mechanism includes a support cross frame. A clamping claw mounting frame is installed on the support arm at the front end of the support cross frame. The upper and lower ends of the clamping claw mounting frame are rotatably installed with clamping claw mechanisms. The present invention discloses a split oral bracket, which is used together with the support tool in actual operation. After the bite block seat enters the oral cavity, under the action of the support tool, the bite block seat can open the oral cavity to the target mouth opening size required by any patient. The opening process simulates the normal mouth opening process of a person, which is more natural and comfortable, easy to operate and use, and is conducive to medical staff to quickly install the oral bracket.

Description

Technical Field

[0001] The invention relates to the technical field of dental tools, in particular to a support system for oral opening. Background Art

[0002] In oral diagnosis and status evaluation, the degree of mouth opening is a very critical parameter. Existing technologies usually require medical staff to make a rough estimate with the help of a ruler or the width of their fingers. Some oral surgeries or corresponding intraoral operations usually require patients to maintain a certain degree of mouth opening, and there is a lack of reliable oral support tools. Some scenarios require accurate reproduction of a certain degree of mouth opening to meet the requirements of position reproduction in time or space dimensions.

[0003] The key points of the above functional requirements are accurate measurement, reliable support and position reproduction. The existing technology has poor measurement accuracy and operability. The oral support in the existing technology is usually a simple fixed bracket, for example, it is classified into three sizes: large, medium and small. The size span is large, and the personalized matching of some patients is insufficient. At the same time, the placement process of the existing oral bracket is not comfortable. When the fixed bracket is repeatedly supported, the patient's wearing method, bite strength, etc. affect the accuracy of repeated positioning. Summary of the invention

[0004] The object of the present invention is to provide an oral opening support system to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] An oral opening support system includes a split oral support and a support tool, wherein the split oral support includes a support plate and two upper and lower bite block seats, the upper and lower ends of the support plate are both provided with a block seat mounting head, and the bite block seat is provided with a first block seat socket for mating with the block seat mounting head;

[0007] The support tool comprises a support mechanism and an opening drive mechanism, wherein the support mechanism comprises a support cross frame, a clamping jaw mounting frame is mounted on the support arm at the front end of the support cross frame, a clamping jaw mechanism is rotatably mounted on the upper and lower ends of the clamping jaw mounting frame, a block seat insertion head is arranged at the front end of the clamping jaw mechanism, and a second block seat socket for cooperating with the block seat insertion head is provided on the bite mark block seat;

[0008] The opening drive mechanism includes a driving frame that horizontally slides with the supporting cross frame and a cam mechanism fixedly installed at the front end of the driving frame, the cam mechanism has a pair of driving inclined side walls and a pair of horizontal side walls that are symmetrical up and down, and the clamping mechanism is rotatably mounted with rollers for cooperating and contacting with the driving inclined side walls and the horizontal side walls. A bracket mounting seat is installed at the front end of the cam mechanism, and a bracket plug-in head is provided on the bracket mounting seat. A plate positioning interface for cooperating with the bracket plug-in head is provided on the support plate.

[0009] As a further solution of the present invention: the clamp mounting frame includes two isosceles trapezoidal clamp mounting base plates, which are fixedly mounted on the support arm; the clamp mechanism includes a first clamp arm, a second clamp arm and an end connecting arm, the two ends of the end connecting arm are rotatably connected to the ends of the first clamp arm and the second clamp arm respectively, the block seat insertion head is integrally arranged on the end connecting arm, the other end of the first clamp arm is rotatably connected to the long side end of the clamp mounting base plate, the other end of the second clamp arm is rotatably connected to the wide side end of the clamp mounting base plate, the first clamp arm, the second clamp arm, the end connecting arm and the hypotenuse of the clamp mounting base plate constitute a parallelogram linkage mechanism, and the roller is rotatably mounted on the second clamp arm.

[0010] As a further solution of the present invention: the front end of the driving frame is fixedly connected to a T-shaped seat plate, the bottom end of the T-shaped seat plate is fixedly connected to a bottom guide rod, the bottom guide rod is slidably inserted in a transverse guide seat installed on the supporting cross frame, the top two sides of the T-shaped seat plate are respectively fixedly connected to top guide rods, the left and right sides of the clamping jaw mounting frame are fixedly installed with clamping jaw guide seats, and the top guide rod is slidably inserted in the clamping jaw guide seat.

[0011] As a further solution of the present invention: an adjusting frame is fixedly mounted on the top guide rod, and an opening adjustment mechanism for adjusting the unfolding size of the cam mechanism is mounted on the adjusting frame;

[0012] The cam mechanism comprises a cam end seat at the front end, a cam oblique arm hinged at the upper and lower ends of the cam end seat, and a cam horizontal arm hinged at the rear end of the cam oblique arm, the outer side wall of the cam oblique arm is a driving oblique side wall, and the outer side wall of the cam horizontal arm is a horizontal side wall;

[0013] The opening adjustment mechanism includes a center lead screw, an adjusting disk, a first bevel gear and a second bevel gear rotatably mounted on an adjusting frame. The front end of the center lead screw is rotatably fitted in the cam end seat. The front section of the center lead screw is threadedly fitted with a pushing block. The front end of the pushing block has a pair of pushing inclined walls symmetrically arranged up and down. The end of the cam horizontal arm is provided with a cam inclined wall that fits with the pushing inclined wall. The cam inclined wall is slidably fitted on the pushing inclined wall. The second bevel gear is fixed to the center lead screw. The adjusting disk is rotatably mounted on the adjusting frame. The shaft end of the adjusting disk is fixed with the first bevel gear, and the first bevel gear is meshingly connected with the second bevel gear.

[0014] As a further solution of the present invention: the adjustment frame includes two cross brackets and a top longitudinal beam connected and fixed at the top of the two cross brackets, the adjustment disk is rotatably mounted on the top longitudinal beam, the left and right ends of the two cross brackets are fixed on the corresponding top guide rods, and the bottoms of the two cross brackets are fixed on the bottom guide rods;

[0015] A pair of internal guide rods are also connected and fixed between the front end cross bracket and the cam end seat, and a displacement adjustment plate is slidably sleeved on the internal guide rods. The rear end of the cam oblique arm is hinged to the cam horizontal arm through the cam pin shaft, and the rear side surface of the displacement adjustment plate is in contact with the cam pin shaft. A pair of displacement adjustment guide rods are also fixedly installed on the front end surface of the displacement adjustment plate, and the front end of the displacement adjustment guide rods passes through the cam end seat and is fixedly connected to the bracket mounting seat.

[0016] As a further solution of the present invention: an opening degree metering mechanism is also fixedly installed on the top guide rod, the opening degree metering mechanism includes a metering disk and a metering frame fixedly mounted on the top guide rod, a reducer is fixedly installed on the metering frame, one end of the reducer is connected to the central axis of the metering disk, the other end of the reducer is connected to a transition shaft, the end of the transition shaft is connected to the rear end of the center screw through a coupling, and metering values ​​are distributed on the circumferential outer wall of the metering disk.

[0017] As a further solution of the present invention: a plurality of damping slots are distributed on the circumferential outer wall of the metering disk, and the damping slots are located between adjacent metering values. A damping seat is fixed on the top guide rod, and a roller accommodating cavity is provided on the damping seat. Strip-shaped oblique axis grooves are provided on the front and rear side walls of the roller accommodating cavity. A damping roller is arranged in the roller accommodating cavity, and two central axis ends of the damping roller are respectively movably arranged in the corresponding strip-shaped oblique axis grooves, and the circumferential outer wall of the damping roller contacts the circumferential outer wall of the metering disk.

[0018] As a further solution of the present invention: a bottom handle is extended from the bottom of the supporting cross frame, and a bottom handle shell is mounted on the bottom handle; a middle handle is extended upward from the rear end of the supporting cross frame, and the middle handle is located in the driving frame, and a middle handle shell is mounted on the middle handle; a frame handle shell is also mounted on the rear side of the driving frame.

[0019] As a further solution of the present invention: the outside of the top guide rod is also covered with an intermediate cover shell for covering the opening adjustment mechanism, and the outside of the clamping jaw mounting frame is also covered with a clamping jaw cover.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows: compared with the existing fixed-size brackets, which are extremely difficult for patients to wear and remove and have poor comfort, the present invention discloses a split oral bracket, which is used in conjunction with a supporting tool during actual operation. After the bite block seat enters the oral cavity, under the action of the supporting tool, the bite block seat can open the oral cavity to a target mouth opening size, simulating the normal mouth opening process of a person, which is more natural and comfortable, and easy to operate and use; the supporting tool of the present invention also includes a mouth opening adjustment mechanism and an opening measurement mechanism. According to different sizes of mouth openings, split oral brackets of different sizes are configured to meet the different mouth opening requirements of various patients; in addition, the mouth opening size of the patient can be accurately measured by the mouth opening adjustment mechanism, and the operability is strong; the supporting tool of the present invention and the split oral bracket are plug-in and docked through a precisely positioned physical interface, which is convenient for disassembly and installation, and is conducive to medical staff to quickly install the split oral bracket. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional structural schematic diagram of a support system for oral opening;

[0022] Figure 2 A schematic diagram of the structure of an oral opening support system after removing the external shell;

[0023] Figure 3 It is a three-dimensional exploded structural schematic diagram of a split oral bracket in a support system for oral opening;

[0024] Figure 4 A schematic diagram of the working principle of a split oral bracket in an oral opening support system when in use;

[0025] Figure 5 It is a three-dimensional structural schematic diagram of a mouth opening driving mechanism in an oral mouth opening support system;

[0026] Figure 6 It is a schematic diagram of the side structure of a cam mechanism in a support system for oral opening;

[0027] Figure 7It is a structural schematic diagram of the front end surface of a push block in another connection mode in a support system for oral opening;

[0028] Figure 8 It is a schematic diagram of the three-dimensional structure of a mouth opening drive mechanism in an oral mouth opening support system after a support plate is installed;

[0029] Fig. 9 A schematic diagram of the three-dimensional structure of an opening degree measuring mechanism in an oral opening support system;

[0030] Fig.10 It is a structural schematic diagram of an enlarged position A of an opening degree measuring mechanism in an oral opening support system;

[0031] Fig.11 It is a three-dimensional structural schematic diagram of a support mechanism in a support system for oral opening;

[0032] Fig.12 It is a schematic diagram of the side structure of a clamping mechanism in a support system for oral opening;

[0033] Fig.13 It is a schematic diagram of the three-dimensional structure of a support mechanism in an oral opening support system after a bite mark block seat is installed;

[0034] Fig.14 A schematic diagram of the action principle of a support system for oral opening;

[0035] Fig.15 A schematic diagram of the action principle of a clamping mechanism in a support system for opening the mouth;

[0036] Fig.16 The present invention is a schematic diagram of the operating principle of a mouth opening degree adjustment mechanism in an oral opening support system.

[0037] In the figure: 100-support mechanism, 11-support cross frame, 12-middle handle, 13-support arm, 14-bottom handle, 151-claw mounting frame, 152-claw mechanism, 1521-first clamping arm, 1522-second clamping arm, 1523-end connecting arm, 1524-block seat plug-in head, 1525-roller, 1526-reset spring, 153-claw guide seat, 16-lateral guide seat, 200-opening drive mechanism, 21-drive frame, 22-T-type seat plate, 23-top guide rod, 24-bottom guide rod, 25-cam mechanism, 251-cam oblique arm, 252-cam horizontal arm, 2521-micro groove, 253-cam end seat, 254-internal guide rod, 255-cam pin, 256-tension spring, 26-bracket mounting seat, 261-bracket plug-in head, 27-opening degree Adjustment mechanism, 271-adjustment disk, 2711-first bevel gear, 272-cross bracket, 273-top longitudinal beam, 274-center screw, 2741-second bevel gear, 275-push block, 2751-dovetail guide groove, 28-opening degree measurement mechanism, 281-metering disk, 2811-metering value, 2812-damping slot, 283-reducer, 284-coupling, 285-damping Seat, 286-roller accommodating cavity, 287-damping roller, 300-frame handle shell, 400-middle handle shell, 500-middle cover shell, 600-clamping claw cover, 700-bottom handle shell, 800-split oral bracket, 81-support plate, 811-plate positioning interface, 812-block seat mounting head, 82-bite mark block seat, 821-second block seat socket, 822-first block seat socket. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the 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.

[0039] Example: See Figure 1-16 , an oral support system for opening the mouth, including a split oral support 800 and a support tool, see Figure 3-4 The split oral bracket 800 includes a support plate 81 and two upper and lower bite block seats 82. The upper and lower ends of the support plate 81 are both provided with block seat mounting heads 812. The bite block seat 82 is provided with a first block seat socket 822 for mating with the block seat mounting head 812.

[0040] See also Figure 1-2 as well as Figure 5The support tool includes a support mechanism 100 and a mouth opening drive mechanism 200. The support mechanism 100 includes a support cross frame 11. A clamping jaw mounting frame 151 is installed on the support arm 13 at the front end of the support cross frame 11. The upper and lower ends of the clamping jaw mounting frame 151 are rotatably mounted with clamping jaw mechanisms 152. The front end of the clamping jaw mechanism 152 is provided with a block seat insertion head 1524. The bite mark block seat 82 is provided with a second block seat socket 821 for cooperating with the block seat insertion head 1524 for insertion.

[0041] The opening drive mechanism 200 includes a drive frame 21 that horizontally slides with the supporting cross frame 11 and a cam mechanism 25 fixedly installed at the front end of the drive frame 21. The cam mechanism 25 has a pair of driving oblique side walls and a pair of horizontal side walls that are symmetrical up and down. The clamping mechanism 152 is rotatably mounted with a roller 1525 that is used to cooperate and contact with the driving oblique side walls and the horizontal side walls. A bracket mounting seat 26 is installed at the front end of the cam mechanism 25, and a bracket plug-in head 261 is provided on the bracket mounting seat 26. The support plate 81 is provided with a plate positioning interface 811 for cooperating with the bracket plug-in head 261.

[0042] See also Figure 13-15 The working principle of the present invention is as follows: through the cooperation of the block seat insertion head 1524 and the second block seat socket 821, the two bite mark block seats 82 are respectively installed at the front end of the corresponding clamping claw mechanism 152, and through the cooperation of the bracket insertion head 261 and the plate body positioning interface 811, the support plate 81 is installed at the front end of the cam mechanism 25, and the two bite mark block seats 82 are extended into the oral cavity. The patient bites the corresponding bite mark block seat 82 with his teeth, and the support tool starts to move, pushing the driving frame 21 to move forward along the supporting cross frame 11. The driving oblique side wall of the cam mechanism 25 will push the roller 1525, so that the clamping claw mechanism 152 is gradually opened. When the horizontal side wall of the cam mechanism 25 contacts the roller 1525, the clamp mechanism 152 opens to the maximum. At this time, the block seat installation heads 812 at the upper and lower ends of the support plate 81 are aligned with the first block seat socket 822 on the bite mark block seat 82. The drive frame 21 is continuously pushed to completely insert the block seat installation head 812 into the first block seat socket 822. Then, the block seat insertion head 1524 is disconnected from the second block seat socket 821, and the entire support tool can be pulled out of the split oral bracket 800, leaving the split oral bracket 800 in the oral cavity, and the oral opening degree is maintained by the split oral bracket 800. The present invention is easy to operate and use, has accurate position docking, and can provide reliable support.

[0043] Preferably, see Fig.12The clamping jaw mounting frame 151 includes two isosceles trapezoidal clamping jaw mounting base plates, which are fixedly mounted on the support arm 13. The clamping jaw mechanism 152 includes a first clamping arm 1521, a second clamping arm 1522 and an end connecting arm 1523. The two ends of the end connecting arm 1523 are rotatably connected to the ends of the first clamping arm 1521 and the second clamping arm 1522 respectively. The block seat insertion head 1524 is integrally arranged on the end connecting arm 1523. The other end of the first clamping arm 1521 is rotatably connected to the long side end of the clamping jaw mounting base plate, and the other end of the second clamping arm 1522 is rotatably connected to the wide side end of the clamping jaw mounting base plate. The first clamping arm 1521, the second clamping arm 1522, the end connecting arm 1523 and the hypotenuse of the clamping jaw mounting base plate constitute a parallelogram connecting rod mechanism, and the roller 1525 is rotatably mounted on the second clamping arm 1522.

[0044] In order to ensure that the rollers 1525 installed on the two clamping jaws 152 are always in contact with the cam mechanism 25, a return spring 1526 is connected between the two second clamping arms 1522. The tensile elastic force of the return spring 1526 ensures that the two rollers 1525 are always in contact with the cam mechanism 25.

[0045] Since the first clamp arm 1521, the second clamp arm 1522, the end connecting arm 1523 and the hypotenuse of the clamp mounting seat plate constitute a parallelogram linkage mechanism, during the unfolding of the clamp mechanism 152, the extension direction of the block seat insertion head 1524 can always remain horizontal, that is, the two bite mark block seats 82 can also always remain parallel.

[0046] Preferably, see Figure 5 The front end of the driving frame 21 is fixedly connected with a T-shaped seat plate 22, and the bottom end of the T-shaped seat plate 22 is fixedly connected with a bottom guide rod 24. The bottom guide rod 24 is slidably inserted in the lateral guide seat 16 installed on the supporting cross frame 11. The top two sides of the T-shaped seat plate 22 are respectively fixedly connected with top guide rods 23. The left and right sides of the clamping jaw mounting frame 151 are fixedly installed with clamping jaw guide seats 153, and the top guide rod 23 is slidably inserted in the clamping jaw guide seat 153.

[0047] Preferably, see Figure 5 The top guide rod 23 is also fixedly mounted with an adjustment frame, and the adjustment frame is mounted with an opening adjustment mechanism 27 for adjusting the unfolding size of the cam mechanism 25;

[0048] See also Figure 6 The cam mechanism 25 includes a cam end seat 253 at the front end, a cam oblique arm 251 hinged at the upper and lower ends of the cam end seat 253, and a cam horizontal arm 252 hinged at the rear end of the cam oblique arm 251. The outer side wall of the cam oblique arm 251 is a driving oblique side wall, and the outer side wall of the cam horizontal arm 252 is a horizontal side wall.

[0049] The opening adjustment mechanism 27 includes a center lead screw 274, an adjusting disk 271, a first bevel gear 2711 and a second bevel gear 2741 rotatably mounted on an adjusting frame. The front end of the center lead screw 274 is rotatably fitted in the cam end seat 253. The front section of the center lead screw 274 is threadedly fitted with a push block 275. The front end of the push block 275 has a pair of push inclined walls symmetrically arranged up and down. The end of the cam horizontal arm 252 is provided with a cam inclined wall that fits with the push inclined wall. The cam inclined wall is slidably fitted on the push inclined wall. The second bevel gear 2741 is fixedly fitted on the center lead screw 274. The adjusting disk 271 is rotatably mounted on the adjusting frame. The shaft end of the adjusting disk 271 is fixedly mounted with the first bevel gear 2711, and the first bevel gear 2711 is meshingly connected with the second bevel gear 2741.

[0050] Obviously, as another solution, the adjusting disk 271 can be replaced by an adjusting motor installed on the adjusting frame, and the first bevel gear 2711 is fixedly installed on the output shaft end of the adjusting motor.

[0051] See also Figure 6 In order to ensure that the cam inclined wall at the end of the cam horizontal arm 252 always fits with the push inclined wall of the push block 275, a spring pin is provided on the cam horizontal arm 252 and the push block 275, and a tension spring 256 is connected between the two spring pins. The elastic force of the tension spring 256 ensures that the cam inclined wall always fits with the push inclined wall of the push block 275;

[0052] Of course, another connection method can be used. Figure 7 A dovetail guide groove 2751 is provided on the pushing inclined wall of the pushing block 275, and a dovetail guide block is extended from the cam inclined wall at the end of the cam horizontal arm 252. The dovetail guide block is slidably fitted in the dovetail guide groove 2751. Such a structural arrangement can ensure that the cam inclined wall is always in contact with the pushing inclined wall of the pushing block 275.

[0053] Since each person's oral cavity is of different size, split oral cavity brackets 800 of different sizes are required. In order to meet the needs of different mouth opening degrees, the size of the cam mechanism 25 needs to be adjusted accordingly to enable the split oral cavity bracket 800 to be installed normally.

[0054] See also Fig.16The working principle of the opening adjustment mechanism 27 is as follows: when the adjusting disk 271 is rotated, the first bevel gear 2711 at the shaft end of the adjusting disk 271 drives the second bevel gear 2741 to rotate, and the second bevel gear 2741 drives the center screw 274 to rotate. The rotating center screw 274 drives the push block 275 to move. When the push block 275 moves left and right, it drives the two cam horizontal arms 252 of the cam mechanism 25 to move away from or close to each other. The distance between the outer walls of the two cam horizontal arms 252 is set to H, that is, the opening degree is H. By rotating the adjusting disk 271, the distance between the two designed cam horizontal arms 252 changes, and the size of the opening degree can be adjusted.

[0055] Preferably, the adjustment frame includes two cross brackets 272 and a top longitudinal beam 273 connected and fixed to the tops of the two cross brackets 272, the adjustment disk 271 is rotatably mounted on the top longitudinal beam 273, the left and right ends of the two cross brackets 272 are fixedly mounted on the corresponding top guide rods 23, and the bottoms of the two cross brackets 272 are fixedly mounted on the bottom guide rods 24;

[0056] A pair of internal guide rods 254 are also connected and fixed between the front end cross bracket 272 and the cam end seat 253, and the push block 275 is slidably mounted on the internal guide rod 254. A displacement adjustment plate 263 is also slidably mounted on the internal guide rod 254. The rear end of the cam inclined arm 251 is hinged to the cam horizontal arm 252 through the cam pin 255. The rear side surface of the displacement adjustment plate 263 contacts the cam pin 255. A pair of displacement adjustment guide rods 262 are also fixedly mounted on the front end surface of the displacement adjustment plate 263. The front end of the displacement adjustment guide rod 262 passes through the cam end seat 253 and is fixedly connected to the bracket mounting seat 26.

[0057] When the opening degree adjustment is completed, the bracket mounting seat 26 is manually pushed so that the rear side of the displacement adjustment plate 263 contacts the cam pin shaft 255. With such a structural arrangement, in the subsequent operation process, when the clamping jaw mechanism 152 is opened to the maximum, the block seat mounting heads 812 at the upper and lower ends of the support plate 81 can be just aligned with the first block seat socket 822, and the cam mechanism 25 continues to move forward, so that the block seat mounting head 812 can be completely inserted into the first block seat socket 822.

[0058] See also Figure 5After the insertion is completed, in order to facilitate the block seat insertion head 1524 to be easily pulled out from the second block seat socket 821, a small groove 2521 is also opened on the outer wall of the cam horizontal arm 252. When the insertion is completed, the roller 1525 is just in the small groove 2521, so that the distance between the two block seat insertion heads 1524 is slightly reduced, and the main supporting force is switched from the original 1524 and 822 to between 812 and 822. In this way, the contact pressure between the block seat insertion head 1524 and the second block seat socket 821 will be greatly reduced, thereby facilitating the block seat insertion head 1524 to be easily pulled out from the second block seat socket 821.

[0059] Preferably, see Fig.10 The top guide rod 23 is also fixedly mounted with an opening degree metering mechanism 28, which includes a metering disk 281 and a metering frame 282 fixedly mounted on the top guide rod 23, and a reducer 283 is fixedly mounted on the metering frame 282, one end of the reducer 283 is connected to the central axis of the metering disk 281, and the other end of the reducer 283 is connected to a transition shaft, and the end of the transition shaft is connected to the rear end of the center screw 274 through a coupling 284, and metering values ​​2811 are distributed on the circumferential outer wall of the metering disk 281.

[0060] The working principle of the opening degree metering mechanism 28 is as follows: when the rotating disk 271 drives the central screw 274 to rotate, the transition shaft rotates under the drive of the coupling 284, and then drives the metering disk 281 to rotate through the reducer. The metering value 2811 directly above the metering disk 281 is the value of the opening degree H at this time, so that the staff can clearly and intuitively know the opening size at this time, which is convenient for the operator to adjust the required opening size.

[0061] Preferably, a plurality of damping slots 2812 are distributed on the circumferential outer wall of the metering disk 281, and the damping slots 2812 are located between adjacent metering values ​​2811. A damping seat 285 is fixed on the top guide rod 23, and a roller accommodating cavity 286 is provided on the damping seat 285. A strip-shaped oblique axis groove 288 is provided on the front and rear side walls of the roller accommodating cavity 286. A damping roller 287 is arranged in the roller accommodating cavity 286, and two central axis ends of the damping roller 287 are respectively movably arranged in the corresponding strip-shaped oblique axis grooves 288, and the circumferential outer wall of the damping roller 287 contacts the circumferential outer wall of the metering disk 281.

[0062] Such a structural arrangement ensures that during the opening degree adjustment process, the metering disk 281 has a certain gear resistance feeling, and a "clicking" sound can be emitted during the adjustment process, making it convenient for the staff to adjust the opening degree.

[0063] Obviously, as another solution, the mouth opening adjustment mechanism 27 includes a central lead screw 274 rotatably mounted on the adjustment frame and a lead screw driving motor, the front end of the central lead screw 274 is rotatably fitted in the cam end seat 253, the front section of the central lead screw 274 is threadedly fitted with a push block 275, the front end of the push block 275 has a pair of push inclined walls symmetrically arranged up and down, the end of the cam horizontal arm 252 is provided with a cam inclined wall that fits the push inclined wall, the cam inclined wall is slidably fitted on the push inclined wall, and the lead screw driving motor is drivingly connected to the end of the central lead screw 274. The size adjustment of the mouth opening can also be conveniently achieved by directly driving the central lead screw 274 to rotate through the lead screw driving motor.

[0064] Preferably, a bottom handle 14 is extended from the bottom of the supporting cross frame 11, and a bottom handle shell 700 is mounted on the bottom handle 14. A middle handle 12 is extended upward from the rear end of the supporting cross frame 11. The middle handle 12 is located in the driving frame 21, and a middle handle shell 400 is mounted on the middle handle 12. The rear side of the driving frame 21 is also mounted with a frame handle shell 300.

[0065] Preferably, the top guide rod 23 is also externally provided with an intermediate cover shell 500 for covering the opening adjustment mechanism 27 , and the clamping jaw mounting frame 151 is also externally provided with a clamping jaw cover 600 .

[0066] During actual use, one hand holds the bottom handle 14, and the other hand rests on the frame handle shell 300, with the fingers buckled on the middle handle shell 400 and squeezed tightly to bring the middle handle shell 400 and the frame handle shell 300 closer, so that the drive frame 21 can move relative to the supporting cross frame 11, so that the clamping claw mechanism 152 opens, driving the two bite mark block seats 82 to open, and at the same time, the support plate 81 moves forward and approaches the two bite mark block seats 82 until the support plate 81 is completely inserted into the two bite mark block seats 82.

[0067] Obviously, as another solution, a lateral drive screw can be rotatably installed on the supporting cross frame 11, the lateral drive screw is threaded through the driving frame 21, and the end of the lateral drive screw is drivingly connected to the output shaft end of the lateral drive motor fixed on the supporting cross frame 11. The lateral drive motor drives the lateral drive screw to rotate, and the lateral drive screw drives the driving frame 21 to do left and right lateral movement relative to the supporting cross frame 11.

[0068] 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.

[0069] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An oral opening support system, characterized in that: The invention comprises a split oral bracket (800) and a supporting tool, wherein the split oral bracket (800) comprises a supporting plate (81) and two upper and lower bite mark block seats (82), the upper and lower ends of the supporting plate (81) are both provided with a block seat mounting head (812), and the bite mark block seat (82) is provided with a first block seat socket (822) for cooperating with the block seat mounting head (812) for insertion; The support tool comprises a support mechanism (100) and a mouth opening drive mechanism (200), wherein the support mechanism (100) comprises a support cross frame (11), a clamping jaw mounting frame (151) is mounted on a support arm (13) at the front end of the support cross frame (11), a clamping jaw mechanism (152) is rotatably mounted on the upper and lower ends of the clamping jaw mounting frame (151), a block seat insertion head (1524) is arranged at the front end of the clamping jaw mechanism (152), and a second block seat socket (821) for cooperating with the block seat insertion head (1524) for insertion is provided on the bite mark block seat (82); The opening drive mechanism (200) comprises a drive frame (21) that is horizontally slidably matched with the supporting cross frame (11) and a cam mechanism (25) fixedly mounted at the front end of the drive frame (21); the cam mechanism (25) has a pair of driving oblique side walls and a pair of horizontal side walls that are symmetrical in upper and lower directions; a roller (1525) that is rotatably mounted on the clamping jaw mechanism (152) and is used to cooperate with the driving oblique side walls and the horizontal side walls; a bracket mounting seat (26) is mounted at the front end of the cam mechanism (25); a bracket insertion head (261) is provided on the bracket mounting seat (26); and a plate body positioning interface (811) that is used to cooperate with the bracket insertion head (261) for insertion is provided on the support plate (81).

2. The oral opening support system according to claim 1, characterized in that: The clamping jaw mounting frame (151) comprises two isosceles trapezoidal clamping jaw mounting base plates, which are fixedly mounted on the support arm (13). The clamping jaw mechanism (152) comprises a first clamping arm (1521), a second clamping arm (1522) and an end connecting arm (1523). The two ends of the end connecting arm (1523) are rotatably connected to the ends of the first clamping arm (1521) and the second clamping arm (1522), respectively. The block seat inserting head (1524) is integrally arranged at the end. On the connecting arm (1523), the other end of the first clamping arm (1521) is rotatably connected to the long side end of the clamping jaw mounting seat plate, and the other end of the second clamping arm (1522) is rotatably connected to the wide side end of the clamping jaw mounting seat plate. The first clamping arm (1521), the second clamping arm (1522), the end connecting arm (1523) and the hypotenuse of the clamping jaw mounting seat plate constitute a parallelogram linkage mechanism, and the roller (1525) is rotatably mounted on the second clamping arm (1522).

3. The oral opening support system according to claim 2, characterized in that: The front end of the driving frame (21) is fixedly connected to a T-shaped seat plate (22), the bottom end of the T-shaped seat plate (22) is fixedly connected to a bottom guide rod (24), the bottom guide rod (24) is slidably inserted into a lateral guide seat (16) installed on the supporting cross frame (11), the top two sides of the T-shaped seat plate (22) are respectively fixedly connected to top guide rods (23), the left and right sides of the clamping jaw mounting frame (151) are fixedly installed with clamping jaw guide seats (153), and the top guide rod (23) is slidably inserted into the clamping jaw guide seat (153).

4. The oral opening support system according to claim 3, characterized in that: An adjustment frame is also fixedly mounted on the top guide rod (23), and an opening adjustment mechanism (27) for adjusting the unfolded size of the cam mechanism (25) is mounted on the adjustment frame; The cam mechanism (25) comprises a cam end seat (253) at the front end, a cam oblique arm (251) hinged at the upper and lower ends of the cam end seat (253), and a cam horizontal arm (252) hinged at the rear end of the cam oblique arm (251); the outer side wall of the cam oblique arm (251) is a driving oblique side wall, and the outer side wall of the cam horizontal arm (252) is a horizontal side wall; The opening degree adjustment mechanism (27) comprises a central lead screw (274) rotatably mounted on an adjustment frame, an adjustment disk (271), a first bevel gear (2711) and a second bevel gear (2741); the front end of the central lead screw (274) is rotatably engaged in the cam end seat (253); the front section of the central lead screw (274) is threadedly engaged with a push block (275); the front end of the push block (275) has a pair of push inclined walls symmetrically arranged up and down; the end of the cam horizontal arm (252) is provided with a cam inclined wall that fits with the push inclined wall; the cam inclined wall is slidably engaged with the push inclined wall; the second bevel gear (2741) is sleeved and fixed on the central lead screw (274); the adjustment disk (271) is rotatably mounted on the adjustment frame; the shaft end of the adjustment disk (271) is fixedly mounted with the first bevel gear (2711); the first bevel gear (2711) is meshingly connected with the second bevel gear (2741).

5. The oral opening support system according to claim 4, characterized in that: The adjustment frame comprises two cross brackets (272) and a top longitudinal beam (273) connected and fixed to the tops of the two cross brackets (272); the adjustment plate (271) is rotatably mounted on the top longitudinal beam (273); the left and right ends of the two cross brackets (272) are sleeved and fixed on corresponding top guide rods (23); and the bottoms of the two cross brackets (272) are sleeved and fixed on bottom guide rods (24); A pair of internal guide rods (254) are also connected and fixed between the front cross bracket (272) and the cam end seat (253); a displacement adjustment plate (263) is slidably sleeved on the internal guide rod (254); a rear end of the cam oblique arm (251) is hinged to the cam horizontal arm (252) via a cam pin shaft (255); a rear side surface of the displacement adjustment plate (263) contacts the cam pin shaft (255); a pair of displacement adjustment guide rods (262) are also fixedly mounted on the front end surface of the displacement adjustment plate (263); the front ends of the displacement adjustment guide rods (262) pass through the cam end seat (253) and are fixedly connected to the bracket mounting seat (26).

6. The oral opening support system according to claim 4, characterized in that: The top guide rod (23) is also fixedly mounted with an opening degree metering mechanism (28), the opening degree metering mechanism (28) comprising a metering disk (281) and a metering frame (282) fixedly mounted on the top guide rod (23), a reducer (283) being fixedly mounted on the metering frame (282), one end of the reducer (283) being connected to the central axis of the metering disk (281), the other end of the reducer (283) being connected to a transition shaft, the end of the transition shaft being connected to the rear end of the central lead screw (274) via a coupling (284), and metering values ​​(2811) being distributed on the circumferential outer wall of the metering disk (281).

7. The oral opening support system according to claim 6, characterized in that: A plurality of damping slots (2812) are also distributed on the circumferential outer wall of the metering disk (281), and the damping slots (2812) are located between adjacent metering values ​​(2811). A damping seat (285) is fixed on the top guide rod (23), and a roller accommodating cavity (286) is provided on the damping seat (285). Strip-shaped oblique shaft grooves (288) are provided on the front and rear side walls of the roller accommodating cavity (286). A damping roller (287) is arranged in the roller accommodating cavity (286), and two central shaft ends of the damping roller (287) are movably arranged in corresponding strip-shaped oblique shaft grooves (288), and the circumferential outer wall of the damping roller (287) contacts the circumferential outer wall of the metering disk (281).

8. An oral opening support system according to any one of claims 1 to 7, characterized in that: A bottom handle (14) is further extended from the bottom of the supporting cross frame (11), and a bottom handle shell (700) is mounted on the bottom handle (14). A middle handle (12) is further extended upward from the rear end of the supporting cross frame (11), and the middle handle (12) is located in the driving frame (21), and a middle handle shell (400) is mounted on the middle handle (12). A frame handle shell (300) is further mounted on the rear side of the driving frame (21).

9. An oral opening support system according to any one of claims 6-7, characterized in that: The outside of the top guide rod (23) is also provided with an intermediate cover shell (500) for covering the opening adjustment mechanism (27), and the outside of the clamping jaw mounting frame (151) is also provided with a clamping jaw cover (600).

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