Mouth opening training device for maxillofacial fracture patient

Abstract

The utility model discloses a mouth opening training device for a maxillofacial fracture patient, which comprises an adjustable support provided with a hanging lug assembly, a limiting plate is arranged on one side of the support, a lower supporting plate is movably arranged on the other side of the support, a section of first transition inclined plane is arranged on the lower end face of the lower supporting plate, and a second transition inclined plane is arranged on the lower end face of the first transition inclined plane. According to the utility model, the hanging lug assembly is arranged in an adjustable manner, so that the hanging position can be conveniently adjusted, and a limiting plate and the two transition inclined surfaces are combined, so that the hanging position can be conveniently adjusted; oriented movement of the upper supporting plate and the lower supporting plate can open the upper teeth and the lower teeth which are naturally meshed by the patient, and the aim of training the patient to open the mouth in sequence can be effectively achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical instruments, in particular to a mouth opening training device for patients with maxillofacial fractures. Background Art

[0002] Maxillofacial fractures often cause patients to have difficulty opening their mouths and chewing, affecting the beauty of the maxillofacial area and having serious effects on the patient's work, social life and other aspects. Therefore, mouth opening training for mandibular fractures is particularly important. Commonly used mouth opening training devices are usually installed on the patient's teeth before the operation is completed to avoid the situation where the mouth is not properly installed after the operation due to the patient's difficulty in opening the mouth; however, since the patient's mouth is stretched open by the installation first, the long-term stretching of the mandibular muscles is not conducive to the postoperative recovery of the patient's mandible. Utility Model Content

[0003] In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the present invention is to provide a mouth opening training device for patients with maxillofacial fractures which does not require pre-installation and is convenient for assisting patients to open their mouths after surgery.

[0004] In order to solve the above technical problems, a technical solution adopted by the utility model is: to provide a mouth opening training device for patients with maxillofacial fractures, including an adjustable bracket with an ear hanging assembly, a limit plate is provided on one side of the bracket, a lower support plate is movably provided on the other side of the bracket, a first transition inclined surface is provided on the lower end surface of the lower support plate, an upper support plate movably arranged with the bracket is fitted on the lower support plate, and a second transition inclined surface is provided on the upper end surface of the upper support plate.

[0005] By adopting the above structure, the adjustable ear hook assembly can be adjusted according to the size of the patient's head, that is, the distance between the ear and the mouth is different, so as to facilitate the adjustment of the position of the ear hook assembly, and the limit plate is abutted against the outer side of the lower teeth in the patient's mouth to reduce the gap in the hanging state and ensure the installation stability of the bracket; when in use, the upper end surface of the lower support plate abuts against the lower end surface of the upper teeth, and a first transition inclined surface arranged on the lower support plate fits the upper end surface of the lower teeth. As the movable lower support plate moves into the patient's mouth, the first transition inclined surface gradually opens the upper and lower teeth, that is, gradually opens the lower jaw; as the lower jaw gradually opens, in the later stage of postoperative recovery, the upper support plate is pushed in again, and a second transition inclined surface arranged on the upper support plate helps to increase the opening angle of the lower jaw, which helps to recover and consolidate the injury.

[0006] In order to simplify the structure and facilitate use, preferably, the ear hook assembly includes a connecting rod, an arc-shaped hanging rod and a guide sleeve arranged on the hanging rod, and the guide sleeve is arranged on the outside of the connecting rod; at least two positioning holes are provided along the axial direction of the connecting rod at the position corresponding to the guide sleeve on the connecting rod, and a guide hole is provided at the position corresponding to the positioning hole on the guide sleeve, and a positioning column is inserted in the guide hole, and the insertion end of the positioning column extends into the positioning hole at the corresponding position, so that the hanging rod can be positioned on the connecting rod.

[0007] For ease of installation and use, preferably, an upper support plate and a lower support plate are fixed on the bracket in sequence from top to bottom, a first guide rod is provided on one side of the lower support plate, and a first screw rod is provided on the other side, a lower support plate is screwed on the first screw rod, a first guide hole is provided on one side of the lower support plate at a position corresponding to the first guide rod, and the first guide hole is sleeved on the outside of the first guide rod.

[0008] In order to simplify the structure and facilitate use, preferably, a second guide rod is provided on one side of the upper support plate, and a second screw rod is provided on the other side, an upper support plate is screwed on the second screw rod, and a second guide hole is provided on one side of the upper support plate at a position corresponding to the second guide rod, and the second guide hole is sleeved on the outside of the second guide rod.

[0009] In order to ensure the stability of the moving direction, it is preferred that a guide groove is provided on the upper end surface of the lower support plate, and a guide block is provided at the position of the lower end surface of the upper support plate corresponding to the guide groove. The guide block extends into the guide groove and makes the lower support plate and the upper support plate fit together.

[0010] In order to facilitate limiting and prevent the support plate from extending too far and causing discomfort to the patient, preferably, a positioning plate is provided on the upper end surface of the upper support plate, and both the positioning plate and the limiting plate are arc-shaped structures.

[0011] In order to increase the opening angle of the mandible, preferably, the included angle between the first transition slope and the horizontal plane is smaller than the included angle between the second transition slope and the horizontal plane.

[0012] Beneficial effects: The adjustable ear-hanging assembly of the utility model is convenient for adjusting the hanging position, and combined with the setting of the limit plate and the two transition inclined surfaces, the directional movement of the upper support plate and the lower support plate can open the upper and lower teeth of the patient's natural occlusion, and can effectively achieve the purpose of the patient's sequential mouth opening training. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0014] Figure 1 It is a structural schematic diagram of the utility model.

[0015] Figure 2 for Figure 1 Left view of .

[0016] Figure 3 for Figure 1 A view in the figure.

[0017] The meanings of the symbols in the accompanying drawings are:

[0018] Bracket-1; limit plate-10; hanging rod-11; guide sleeve-12; connecting rod-13; positioning hole-14; positioning column-15;

[0019] Lower support plate-21; first transition slope-211; guide groove-212; upper support plate-22; second transition slope-221; guide block-222; positioning plate-23;

[0020] Upper support plate-31; lower support plate-32; first guide rod-41; second guide rod-42; first screw rod-51; second screw rod-52; first guide hole-61; second guide hole-62. DETAILED DESCRIPTION

[0021] Depend on Figure 1 , Figure 2 and Figure 3 As shown, the utility model includes an adjustable bracket 1 with a hanging ear assembly, a limit plate 10 is provided on one side of the bracket 1, a lower support plate 21 is movably provided on the other side of the bracket 1, a first transition inclined surface 211 is provided on the lower end surface of the lower support plate 21, an upper support plate 22 movably arranged with the bracket 1 is fitted on the lower support plate 21, and a second transition inclined surface 221 is provided on the upper end surface of the upper support plate 22.

[0022] Specifically, the ear hanging assembly includes a connecting rod 13 connected to the bracket 1, an arc-shaped hanging rod 11 and a guide sleeve 12 arranged on the hanging rod 11, and the guide sleeve 12 is sleeved on the outside of the connecting rod 13; at least two positioning holes 14 are provided along the axial direction of the connecting rod 13 at the position corresponding to the guide sleeve 12 on the connecting rod 13, and a guide hole is provided at the position corresponding to the positioning hole 14 on the guide sleeve 12, and a positioning column 15 is inserted in the guide hole, and the insertion end of the positioning column 15 extends into the positioning hole 14 at the corresponding position, so that the hanging rod 11 is positioned on the connecting rod 13.

[0023] An upper support plate 31 and a lower support plate 32 are fixedly provided on the bracket 1 in sequence from top to bottom, a first guide rod 41 is provided on one side of the lower support plate 32, a first screw rod 51 is provided on the other side, a lower support plate 21 is screwed on the first screw rod 51, a first guide hole 61 is provided on one side of the lower support plate 21 at a position corresponding to the first guide rod 41, and the first guide hole 61 is sleeved on the outside of the first guide rod 41; a second guide rod 42 is provided on one side of the upper support plate 31, a second screw rod 52 is provided on the other side, an upper support plate 22 is screwed on the second screw rod 52, a second guide hole 62 is provided on one side of the upper support plate 22 at a position corresponding to the second guide rod 42, and the second guide hole 62 is sleeved on the outside of the second guide rod 42.

[0024] A guide groove 212 is provided on the upper end surface of the lower support plate 21 , and a guide block 222 is provided on the lower end surface of the upper support plate 22 at a position corresponding to the guide groove 212 . The guide block 222 extends into the guide groove 212 and makes the lower support plate 21 and the upper support plate 22 fit together.

[0025] A positioning plate 23 is provided on the upper end surface of the upper support plate 22, and the positioning plate 23 and the limiting plate 10 are both arc-shaped structures; the angle between the first transition slope 211 and the horizontal plane is smaller than the angle between the second transition slope 221 and the horizontal plane.

[0026] The operating principle of the utility model is as follows:

[0027] like Figures 1 to 3 As shown, according to the head shape of the patient, the guide sleeve 12 is moved on the connecting rod 13, when the hanging rod 11 is against the patient's ear, and the limiting plate 10 is close to the outer wall of the patient's lower teeth, the positioning column 15 is inserted into the guide hole and extends into the positioning hole 14 at the corresponding position, so as to realize the positioning of the hanging rod 11 on the connecting rod 3, reduce the gap in the hanging state, and ensure the installation stability of the bracket; Figure 1 The number of positioning holes 14 shown is not unique, and the number of positioning holes 14 should be set as appropriate according to actual usage.

[0028] Because at the position of human incisors, a part of the lower end of the upper teeth is surrounded by the outer side of the upper end of the lower teeth, and the height of the shielding position is 2 to 3 mm, the projections of the upper and lower teeth are not aligned. When in use, the patient's lower jaw needs to be relaxed and the lower jaw is in a natural drooping state, that is, the upper and lower teeth are slightly open, so as to leave space for the lower support plate 21 to move in from between the upper and lower teeth. The patient opens his lips and exposes his teeth, and then twists the first screw rod 51 to move the lower support plate 21 toward the patient's oral cavity along the first guide rod 41. As the lower support plate 21 is extended, the upper end surface of the lower support plate 21 abuts against the lower end surface of the upper teeth, and a first transition inclined surface 211 provided on the lower support plate 21 fits the upper end surface of the lower teeth; as the lower support plate 21 continues to move in, the first transition inclined surface 211 gradually opens the lower teeth, that is, gradually opens the lower jaw, and drives the lower jaw to rotate counterclockwise. During this period, the first screw rod 51 is twisted back and forth to gradually exercise the patient's mouth opening angle.

[0029] As the mandible gradually opens, in the later stage of postoperative recovery, the upper support plate 22 is pushed in in the same way. Specifically, the upper end surface of the lower support plate 21 is fitted with the lower end surface of the upper support plate 22, and the second screw rod 52 is twisted, and the guide block 222 moves in the guide groove 212, and the upper support plate 22 is moved toward the patient's mouth along the second guide rod 42. A second transition slope 221 provided on the upper support plate supports the upper teeth. In addition, the slope angle between the second transition slope 221 and the horizontal plane is greater than the slope angle between the first transition slope 211 and the horizontal plane. Since the upper jaw does not move, the lower jaw is driven to make a relative rotation, which helps to increase the opening angle of the lower jaw and the patient's postoperative gradual recovery and consolidation.

[0030] It should be noted that since the situation of maxillofacial fractures is more complicated and only the lower jaw can move, in order to meet the requirements of sequential training recovery, since the slope of the first transition slope 211 is relatively small, during the early postoperative use period, only the lower support plate 21 needs to be moved. In this case, the upper support plate 22 does not need to be screwed for installation, which simplifies the installation structure and facilitates the observation of the patient's initial recovery condition.

[0031] In addition, when using the upper support plate 22, in order to avoid discomfort in the patient's throat due to the lower support plate 21 extending too long, a positioning plate 23 that can abut against the patient's upper teeth is provided on the upper support plate 22; the positioning plate 23 and the limiting plate 10 are both arc-shaped structures, which can effectively fit the upper and lower teeth positions of the patient respectively.

[0032] If the patient cannot move the jaw in the early stage of postoperative recovery, the jaw muscles need to be able to droop naturally in a relaxed state before use, which will help to strengthen the recovery of postoperative muscle memory.

Claims

1. A mouth opening training device for patients with maxillofacial fractures, characterized by: The invention comprises an adjustable bracket (1) provided with a hanging ear assembly, a limiting plate (10) being provided on one side of the bracket (1), a lower support plate (21) being movably provided on the other side of the bracket (1), a first transition inclined surface (211) being provided on the lower end surface of the lower support plate (21), an upper support plate (22) movably provided with the bracket (1) being provided on the lower support plate (21), and a second transition inclined surface (221) being provided on the upper end surface of the upper support plate (22).

2. The mouth opening training device for maxillofacial fracture patients according to claim 1, characterized in that: The ear hanging assembly comprises a connecting rod (13) connected to the bracket (1), an arc-shaped hanging rod (11), and a guide sleeve (12) arranged on the hanging rod (11), wherein the guide sleeve (12) is sleeved on the outer side of the connecting rod (13); at least two positioning holes (14) are arranged on the connecting rod (13) at positions corresponding to the guide sleeve (12) along the axial direction of the connecting rod (13); at positions corresponding to the positioning holes (14) are arranged on the guide sleeve (12); a positioning column (15) is inserted into the guide hole; the insertion end of the positioning column (15) extends into the positioning hole (14) at the corresponding position, so that the hanging rod (11) is positioned and arranged on the connecting rod (13).

3. The mouth opening training device for maxillofacial fracture patients according to claim 1, characterized in that: An upper support plate (31) and a lower support plate (32) are fixedly arranged on the bracket (1) from top to bottom in sequence; a first guide rod (41) is arranged on one side of the lower support plate (32) and a first screw rod (51) is arranged on the other side; a lower support plate (21) is screwed onto the first screw rod (51); a first guide hole (61) is arranged on one side of the lower support plate (21) at a position corresponding to the first guide rod (41); the first guide hole (61) is sleeved on the outer side of the first guide rod (41).

4. The mouth opening training device for maxillofacial fracture patients according to claim 3, characterized in that: A second guide rod (42) is provided on one side of the upper support plate (31), and a second screw rod (52) is provided on the other side. An upper support plate (22) is screwed onto the second screw rod (52). A second guide hole (62) is provided on one side of the upper support plate (22) at a position corresponding to the second guide rod (42). The second guide hole (62) is sleeved on the outer side of the second guide rod (42).

5. The mouth opening training device for maxillofacial fracture patients according to claim 3, characterized in that: A guide groove (212) is provided on the upper end surface of the lower support plate (21), and a guide block (222) is provided on the lower end surface of the upper support plate (22) at a position corresponding to the guide groove (212); the guide block (222) extends into the guide groove (212) and enables the lower support plate (21) and the upper support plate (22) to be closely attached.

6. The mouth opening training device for maxillofacial fracture patients according to claim 1, characterized in that: A positioning plate (23) is provided on the upper end surface of the upper support plate (22), and the positioning plate (23) and the limiting plate (10) are both arc-shaped structures.

7. The mouth opening training device for maxillofacial fracture patients according to claim 1, characterized in that: The included angle between the first transition inclined surface (211) and the horizontal plane is smaller than the included angle between the second transition inclined surface (221) and the horizontal plane.

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