Oral cavity opener with supporting structure

Abstract

The invention relates to the field of oral cavity opening devices, in particular to an oral cavity opening device with a supporting structure, which comprises two driving shafts and two supporting frames, the two driving shafts are arranged in parallel on the same horizontal plane, the shaft walls of the two driving shafts are fixedly sleeved with fixed shifting rings, and the two supporting frames are arranged at the two ends of the driving shafts. Transmission grooves are formed in the sides, away from the driving shaft, of the supporting frames, and lifting sleeves are fixedly connected to the two ends of the sides, close to the driving shaft, of the two supporting frames; two clamping grooves are formed in the inner cylinder wall of each lifting sleeve, a rack is embedded in each clamping groove, the lips of a patient cannot feel uncomfortable, the oral cavity of the patient can be opened, the problem that the sight of the tooth positions is affected due to the fact that the lips wrap the teeth is solved, and in the operation process of the opener, the oral cavity of the patient can be opened. The whole process is exposed, doctors and patients do not need to stretch fingers into the oral cavity of the patient for operation, and operation is convenient and fast.

Description

Technical Field

[0001] This invention relates to the field of oral retractors, specifically an oral retractor with a support structure. Background Technology

[0002] When medical staff treat patients' oral cavity, teeth, or throat, patients need to open their mouths wide so that they can see the condition inside the mouth. However, patients need to keep their mouths open for a long time, which can cause soreness in the masseter muscles. Therefore, it is necessary to use an oral retractor to open the patient's mouth.

[0003] A mouth opener with publication number CN107752973A includes: a palate support portion and a tongue pressing portion made of rigid material. The palate support portion and the tongue pressing portion are connected by a connecting piece, but not at the other end. The palate support portion is provided with an elastic soft pad that contacts the palate of the oral cavity. The lower surface of the palate support portion facing the tongue pressing portion is provided with at least one engaging portion. The tongue pressing portion is pivotally connected to a support that cooperates with the engaging portion to open the palate support portion and the tongue pressing portion at an angle, opening the upper and lower palates of the oral cavity at an appropriate angle, preventing saliva from flowing out and the mouth opener from being swallowed into the throat, and also allowing for adjustment of the opening angle. This is a rigid mouth opener. This invention solves the problem that existing soft oral retractors can be swallowed into the throat when the patient closes their mouth, or cause the teeth to bite the hands of medical staff. This oral retractor is placed against the palate and tongue of the human mouth to open the upper and lower teeth. The opening angle can be adjusted, and it prevents the patient from suddenly closing their mouth and swallowing or spitting out the tooth, which could cause the teeth to bite the hands of medical staff. At the same time, since it does not rely on the teeth as a support, it will not obstruct the teeth and will not affect dental operations.

[0004] It has the following shortcomings: 1. It is located entirely inside the user's mouth, which can cause discomfort for the user if used for a long time; 2. During installation, because it is located entirely inside the user's mouth, and the oral cavity is already small, the support needs to be inserted into the groove after the retractor is placed, which is extremely inconvenient and makes the retractor difficult to use; 3. The retractor can only open the patient's mouth but cannot open the patient's lips. When the patient's teeth are being treated, the lips will cover the teeth because they are not opened, thus hindering the treatment. Summary of the Invention

[0005] To address the problems in the prior art, the present invention provides an oral cavity opener with a support structure.

[0006] The technical solution adopted by the present invention to solve its technical problem is: an oral cavity opener with a support structure, including a drive shaft and a support frame. Two drive shafts are arranged parallel to the horizontal plane. Fixed rings are fixedly sleeved on the shaft walls of the two drive shafts. Two support frames are provided, and the two support frames are located at both ends of the drive shaft. A transmission groove is opened on the side of the support frame away from the drive shaft. Lifting sleeves are fixedly connected to both ends of the two support frames near the drive shaft.

[0007] Each of the lifting sleeves has two slots on its inner wall, and a rack is embedded in each slot. The drive shaft wall has matching meshing teeth at the position of the rack, and the meshing teeth mesh with the adjacent rack.

[0008] Square grooves are provided at both ends of the drive shaft. A square shaft is slidably inserted into the inside of the square groove. The end of the square shaft away from the drive shaft extends out of the square groove and is fixedly connected to a rotating shaft. The end of the rotating shaft away from the square shaft passes through the support frame and extends into the inside of the transmission groove. The transmission shaft is rotatably connected to the support frame. A transmission wheel is fixedly sleeved on the shaft wall at the end of the transmission shaft that extends into the transmission groove. Two adjacent transmission wheels are connected by a transmission belt.

[0009] Each of the lifting sleeves has an annular groove at the end away from the support frame. A sealing sleeve is slidably inserted into the annular groove. Both ends of the sealing fixing ring have matching sealing grooves corresponding to the sealing sleeves. The end of the sealing sleeve extending out of the annular groove is inserted into the adjacent sealing groove.

[0010] An internal threaded hole is provided on one side wall of the fixed ring. The internal threaded hole is connected to the sealing groove, and a threaded rod is inserted into the internal thread of the internal threaded hole.

[0011] A first connecting arm is fixedly connected to the outer wall of the fixed ring on the side away from the threaded insert. A second connecting arm is fixedly connected to the outer wall of the support frame on the side close to the first connecting arm. The other ends of the first and second connecting arms are both hinged to a hinge frame by a pin. An arc-shaped support ring is fixedly connected to the end of the hinge frame away from the pin.

[0012] Specifically, a first spring is sleeved on the outer wall of one end of the square shaft extending from the square groove, and the two ends of the first spring abut against the drive shaft and the support frame, respectively.

[0013] Specifically, a cover is provided on the side of the support frame away from the lifting sleeve.

[0014] Specifically, a second spring is fixedly connected to one end of the sealing sleeve that is slidably inserted into the annular groove, and the other end of the second spring is fixedly connected to the inner wall of the annular groove.

[0015] Specifically, a lever sleeve is movably sleeved on the rod wall at the end of the threaded rod away from the fixed lever ring.

[0016] Specifically, the arc-shaped support ring is made of rubber material, and a support groove is formed on the side wall of the outer circle of the arc-shaped support ring.

[0017] The beneficial effects of this invention are:

[0018] The oral retractor with a support structure described in this invention uses a grooved rubber arc-shaped support ring on the first and second connecting arms to open the patient's upper lip, lower lip, and two corners of the lips. Because it is made of rubber, it does not cause discomfort to the patient's lips. It satisfies the need to open the patient's mouth without causing the lips to cover the teeth and obstruct the view of their position. In use, the patient simply opens their mouth and places the compressed retractor on their lips; the retractor will automatically open. The two lip corners are opened, and by moving the sleeve and threaded rod, the fixed ring can be rotated. When the fixed ring rotates, it can drive the arc-shaped support ring on the second connecting arm to open the patient's upper and lower lips. At the same time, the fixed ring can drive the drive shaft to rotate, so that the meshing teeth engage with the rack, thereby locking the opening width of the lip corners. Then, by rotating the threaded rod, the opening angle of the upper and lower lips can be locked. During the operation, the opener is exposed throughout the process, without the need for medical staff to put their fingers into the patient's mouth, making it relatively convenient to operate. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] Figure 1 A schematic diagram of the structure of an oral retractor with a support structure provided by the present invention;

[0021] Figure 2 A cross-sectional view of an oral retractor with a support structure provided by the present invention;

[0022] Figure 3 A split view of an oral retractor with a support structure provided by the present invention;

[0023] Figure 4 A schematic diagram of the internal structure of an oral retractor with a support structure provided by the present invention;

[0024] Figure 5This invention provides a schematic diagram of the drive shaft in an oral retractor with a support structure. In the diagram: 1. Drive shaft; 2. Fixed ring; 3. Support frame; 4. Transmission groove; 5. Lifting sleeve; 6. Slot; 7. Rack; 8. Meshing teeth; 9. Square groove; 10. Square shaft; 11. Rotating shaft; 12. First spring; 13. Transmission wheel; 14. Transmission belt; 15. Cover; 16. Ring groove; 17. Sealing sleeve; 18. Sealing groove; 19. Internal threaded hole; 20. Threaded rod; 21. Actuating sleeve; 22. First connecting arm; 23. Second connecting arm; 24. Pin; 25. Hinge frame; 26. Arc-shaped support ring; 27. Support groove; 28. Second spring. Detailed Implementation

[0025] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0026] like Figures 1-5 As shown, the oral cavity opener with a support structure of the present invention includes a drive shaft 1 and a support frame 3. Two drive shafts 1 are arranged parallel to the horizontal plane. Fixed rings 2 are fixedly sleeved on the shaft walls of the two drive shafts 1. Two support frames 3 are provided, and the two support frames 3 are located at both ends of the drive shaft 1. A transmission groove 4 is opened on the side of the support frame 3 away from the drive shaft 1. Lifting sleeves 5 are fixedly connected to both ends of the two support frames 3 on the side close to the drive shaft 1.

[0027] Two slots 6 are provided on the inner wall of each lifting sleeve 5. A rack 7 is embedded in the inside of each slot 6. A matching meshing tooth 8 is provided on the shaft wall of the drive shaft 1 at the position corresponding to the rack 7. The meshing tooth 8 meshes with the adjacent rack 7.

[0028] Square grooves 9 are provided at both ends of the drive shaft 1. A square shaft 10 is slidably inserted into the square groove 9. The end of the square shaft 10 away from the drive shaft 1 extends out of the square groove 9 and is fixedly connected to a rotating shaft 11. The end of the rotating shaft 11 away from the square shaft 10 passes through the support frame 3 and extends into the interior of the transmission groove 4. The transmission shaft 11 is rotatably connected to the support frame 3. A transmission wheel 13 is fixedly sleeved on the shaft wall at the end of the transmission shaft 11 that extends into the interior of the transmission groove 4. Two adjacent transmission wheels 13 are connected by a transmission belt 14.

[0029] Each lifting sleeve 5 has an annular groove 16 at the end away from the support frame 3. A sealing sleeve 17 is slidably inserted into the annular groove 16. Both ends of the sealing fixing ring 2 are provided with matching sealing grooves 18 corresponding to the sealing sleeve 17. The end of the sealing sleeve 17 extending out of the annular groove 16 is inserted into the adjacent sealing groove 18.

[0030] An internal threaded hole 19 is provided on the side wall of one side of the fixed ring 2. The internal threaded hole 19 is connected to the sealing groove 18. A threaded rod 20 is inserted into the internal thread of the internal threaded hole 19.

[0031] A first connecting arm 22 is fixedly connected to the outer wall of the fixed ring 2 on the side away from the threaded rod 20. A second connecting arm 23 is fixedly connected to the outer wall of the support frame 3 on the side close to the first connecting arm 22. The other ends of the first connecting arm 22 and the second connecting arm 23 are both hinged to a hinge frame 25 through a pin 24. An arc-shaped support ring 26 is fixedly connected to the end of the hinge frame 25 away from the pin 24.

[0032] Specifically, a first spring 12 is sleeved on the outer wall of one end of the square groove 9 extending from the square shaft 10. The two ends of the first spring 12 abut against the drive shaft 1 and the support frame 3 respectively. The elastic force of the first spring 12 can push the two support frames 3 to extend away from the fixed ring 2.

[0033] Specifically, a cover 15 is provided on the side of the support frame 3 away from the lifting sleeve 5, and the cover 15 can effectively seal the transmission groove 4 inside the support frame 3.

[0034] Specifically, a second spring 28 is fixedly connected to one end of the sealing sleeve 17 that is slidably inserted into the annular groove 16. The other end of the second spring 28 is fixedly connected to the inner wall of the annular groove 16. The elastic force of the second spring 28 can push the sealing sleeve 17 to extend out of the annular groove 16, thereby effectively allowing the sealing sleeve 17 to be inserted into the interior of the sealing groove 18. The sealing sleeve 17 can effectively prevent the transmission structure inside the lifting sleeve 5 from being exposed, making it easier for the device to be cleaned and disinfected.

[0035] Specifically, a sliding sleeve 21 is movably sleeved on the rod wall of the threaded insert 20 at the end away from the fixed dial ring 2. The sliding sleeve 21 can effectively extend the length of the threaded insert 20, allowing the threaded insert 20 to easily drive the fixed dial ring 2 to rotate. Furthermore, the sliding sleeve 21 can be easily removed, ensuring that the sliding sleeve 21 does not obstruct the examination of the oral cavity.

[0036] Specifically, the arc-shaped support ring 26 is made of rubber material, and a support groove 27 is provided on the side wall of the outer circle of the arc-shaped support ring 26. The arc-shaped support ring 26 made of rubber material is more comfortable when opening the mouth, and the support groove 27 can make the arc-shaped support ring 26 better bear the force.

[0037] In use, first rotate the fixed ring 2, causing the fixed ring 2 to cause the meshing teeth 8 to separate from the rack 7. After the meshing teeth 8 separate from the rack 7, the lifting sleeve 5 can retract towards the fixed ring 2. When placing the retractor, hold the two support frames 3, with your index finger and thumb in contact with the caps 15 on the two support frames 3 respectively. Pinch the two support frames 3 together in the adjacent direction with your index finger and thumb. The support frames 3 and the lifting sleeve 5 will retract towards the fixed ring 2, and the sealing sleeve 17 will retract into the annular groove 16. At this time, the first spring 12 and the second spring 28 are both compressed. Then, place the retractor in the middle lip position of the patient's open mouth. The arc-shaped support rings 26 hinged on the two second connecting arms 23 By releasing the pinch between the index finger and thumb at the two corners of the patient's mouth, the support frame 3 and the lifting sleeve 5 automatically reset under the spring force, causing the arc-shaped support rings 26 on the two second connecting arms 23 to abut against the two corners of the mouth. Then, the angle of the arc-shaped support rings 26 on the two first connecting arms 22 is adjusted along the pin 24 to align them with the patient's upper and lower lips. Finally, the sleeve 21 is turned to rotate the threaded rod 20 and the fixed ring 2. When the fixed ring 2 rotates, it drives the drive shaft 1 to rotate. When the drive shaft 1 rotates, it drives the meshing teeth 8 on the shaft wall to rotate and drives the square shaft 10 to rotate through the square groove 9. When the square shaft 10 rotates, it drives the transmission wheel 13 through the rotating shaft 11. The transmission wheel 13 rotates, and the transmission belt 14 drives the transmission, allowing the two first connecting arms 22 to rotate at the same angle. After rotation, the meshing teeth 8 will mesh with the rack 7. When the meshing teeth 8 mesh with the rack 7, they can lock the lifting sleeve 5, thereby locking the width of the arc-shaped support ring 26 on the second connecting arm 23 in opening the corners of the patient's mouth. Then, the threaded rod 20 is rotated. When the threaded rod 20 rotates, it can tighten and lock the sealing sleeve 17 inserted into the sealing groove 18, thereby preventing the fixed ring 2 from rotating along the sealing sleeve 17. This locks the opening angle of the arc-shaped support ring 26 on the first connecting arm 22 in opening the upper and lower lips. Then, the actuating sleeve 21 is removed from the end of the threaded rod 20, allowing the actuating sleeve 2 to be removed. The sleeve 21 does not obstruct medical staff from viewing the inside of the patient's mouth. The mouth opener is exposed throughout the operation, eliminating the need for medical staff to insert their fingers into the patient's mouth, making it convenient to operate. The rubber arc-shaped support ring 26 with support groove 27 on the first connecting arm 22 and the second connecting arm 23 can open the patient's upper lip, lower lip, and two corners of the lips. When opening the patient's lips, the patient's teeth will open on their own under the action of the lips, without the need for the patient's masseter muscles to exert force to open the upper and lower jaws. Due to the rubber material used, it will not cause discomfort to the patient's lips. It can satisfy the need to open the patient's mouth without causing the lips to cover the teeth and affect the view of the teeth's position.

[0038] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection claimed by the present invention. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. An oral retractor with a support structure, characterized in that, It includes a drive shaft (1) and a support frame (3). There are two drive shafts (1) arranged parallel to the horizontal plane. Fixed rings (2) are fixedly sleeved on the shaft walls of the two drive shafts (1). There are two support frames (3), and the two support frames (3) are arranged at both ends of the drive shaft (1). A transmission groove (4) is opened on the side of the support frame (3) away from the drive shaft (1). Lifting sleeves (5) are fixedly connected to both ends of the two support frames (3) on the side close to the drive shaft (1). Two slots (6) are provided on the inner wall of each lifting sleeve (5), and a rack (7) is embedded in the inside of each slot (6). The shaft wall of the drive shaft (1) is provided with a matching meshing tooth (8) corresponding to the position of the rack (7). The meshing tooth (8) meshes with the adjacent rack (7). Square grooves (9) are provided at both ends of the drive shaft (1). A square shaft (10) is slidably inserted into the square groove (9). The end of the square shaft (10) away from the drive shaft (1) extends out of the square groove (9) and is fixedly connected to a rotating shaft (11). The end of the rotating shaft (11) away from the square shaft (10) passes through the support frame (3) and extends into the interior of the transmission groove (4). The transmission shaft (11) is rotatably connected to the support frame (3). A transmission wheel (13) is fixedly sleeved on the shaft wall at one end of the transmission shaft (11) extending into the interior of the transmission groove (4). Two adjacent transmission wheels (13) are connected by a transmission belt (14). Each of the lifting sleeves (5) has an annular groove (16) at one end away from the support frame (3). A sealing sleeve (17) is slidably inserted into the annular groove (16). Both ends of the sealing fixing ring (2) are provided with matching sealing grooves (18) corresponding to the sealing sleeve (17). One end of the sealing sleeve (17) extending out of the annular groove (16) is inserted into the adjacent sealing groove (18). An internal threaded hole (19) is provided on one side wall of the fixed ring (2). The internal threaded hole (19) is connected to the sealing groove (18). A threaded rod (20) is inserted into the internal thread of the internal threaded hole (19). The fixed ring (2) is fixedly connected to the outer wall of the side away from the threaded rod (20) with a first connecting arm (22), and the support frame (3) is fixedly connected to the outer wall of the side close to the first connecting arm (22) with a second connecting arm (23). The other ends of the first connecting arm (22) and the second connecting arm (23) are both hinged to a hinge frame (25) by a pin (24). The end of the hinge frame (25) away from the pin (24) is fixedly connected to an arc-shaped support ring (26).

2. The oral retractor with a support structure according to claim 1, characterized in that: A first spring (12) is sleeved on the outer wall of one end of the square shaft (10) extending out of the square groove (9). The two ends of the first spring (12) abut against the drive shaft (1) and the support frame (3) respectively.

3. The oral retractor with a support structure according to claim 1, characterized in that: The support frame (3) is provided with a cover (15) on the side away from the lifting sleeve (5).

4. The oral retractor with a support structure according to claim 1, characterized in that: The sealing sleeve (17) is slidably inserted into the annular groove (16) and a second spring (28) is fixedly connected to one end. The other end of the second spring (28) is fixedly connected to the inner wall of the annular groove (16).

5. The oral retractor with a support structure according to claim 1, characterized in that: A sliding sleeve (21) is movably sleeved on the rod wall at the end of the threaded rod (20) away from the fixed ring (2).

6. The oral retractor with a support structure according to claim 1, characterized in that: The arc-shaped support ring (26) is made of rubber material, and a support groove (27) is provided on the side wall of the outer circle of the arc-shaped support ring (26).

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