CN216167913U - Temporomandibular joint auxiliary device - Google Patents

Abstract

The utility model belongs to the technical field of medical instruments, and particularly relates to a temporomandibular joint auxiliary device which comprises a neck support part, a jaw opening part and a fixing part. Wherein, the neck support part is used for heightening the neck of the patient when the patient lies down, and assists the patient to open the mouth naturally. The jaw opening part is connected to the fixing part, and the fixing part is installed on the fixing body to fixedly support the jaw opening part. Jaw opening portion includes first expanding structure and second expanding structure, and first expanding structure has first occlusal end, and second expanding structure has the second occlusal end, and when jaw opening portion placed in patient's oral cavity, first occlusal end was used for butt maxilla, and the second occlusal end is used for butt mandible. The first expansion structure is connected with the second expansion structure, so that the first occlusion end and the second occlusion end can be far away from each other or can be close to each other, the oral cavity of a patient is promoted to be opened at different angles, the same opening posture and the same position are maintained for a long time, and the discomfort of the patient is reduced.

Description

Temporomandibular joint auxiliary device

Technical Field

The utility model belongs to the technical field of medical instruments, and particularly relates to a temporomandibular joint auxiliary device.

Background

The current routine temporomandibular joint nmr scanning operates as follows: the patient is first examined in the closed position, then kept still, and the mouth is opened again for examination. During the open examination, the patient must keep the mouth open posture still and maintain the mouth open posture for about 10 minutes, however, because the time is long, the patient cannot keep the stability of the mouth open posture and the uniformity of the positions, therefore, one patient often needs to repeat multiple scanning to obtain the influence of the requirement of the composite examination, which is a refractive experience for the patient suffering from the temporomandibular joint disease. According to the above, when the conventional nuclear magnetic resonance scanning examination of the temporomandibular joint is carried out, the scanning is repeated for a plurality of times, which not only increases the discomfort of the patient, but also causes the detection result to be inaccurate due to the oral cavity movement of the patient in the scanning process, and also increases the exercise intensity of the medical care personnel and the patient, thereby bringing great inconvenience to the clinical treatment.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a temporomandibular joint auxiliary device, and aims to solve the problem that the mouth of a patient cannot keep the stability of the same posture and the uniformity of the position when temporomandibular joint nuclear magnetic resonance conventional scanning is performed.

In order to achieve the purpose, the utility model adopts the technical scheme that: a temporomandibular joint assistance device comprising: a neck support part 10, a jaw opening part 20 and a fixing part 30. Wherein, the neck support part 10 is used for raising the neck of the patient when the patient lies down to lift the jaw of the patient; the jaw opening part 20 comprises a first expansion structure 21 and a second expansion structure 22, the first expansion structure 21 has a first occlusion end 211, the second expansion structure 22 has a second occlusion end 221, the first occlusion end 211 is used for abutting against the maxilla, the second occlusion end 221 is used for abutting against the mandible, and the first expansion structure 21 is connected with the second expansion structure 22, so that the first occlusion end 211 and the second occlusion end 221 can be far away from each other or can be close to each other. The jaw opening part 20 is connected to a fixing part 30, and the fixing part 30 is used for being mounted on a fixing body to fixedly support the jaw opening part 20.

Further, the jaw opening portion 20 further includes an adjustment structure 23; the first expandable structure 21 also has a first adjustment bar 212 with the first engagement end 211 disposed on a first end of the first adjustment bar 212. The second expandable structure 22 also has a second adjustment stem 222, and the second engagement end 221 is disposed on a first end of the second adjustment stem 222. The first adjustment lever 212 is pivotally connected to the second adjustment lever 222, and the adjustment structure 23 is fitted between the second end of the first adjustment lever 212 and the second end of the second adjustment lever 222, and the adjustment structure 23 adjusts the second end of the first adjustment lever 212 and the second end of the second adjustment lever 222 to rotate around the pivotal connection point to be away from or close to each other.

Further, the adjusting structure 23 includes: and a shift lever 231, one end of the shift lever 231 being pivotally connected to the second end of the first adjustment lever 212. And a gear fixing member 232, the gear fixing member 232 being disposed at the second end of the second adjustment lever 222, the gear fixing member 232 being used to fix the gear rod 231 after the second end of the first adjustment lever 212 and the second end of the second adjustment lever 222 are separated from each other by a predetermined distance, so that the relative position of the second end of the first adjustment lever 212 and the second end of the second adjustment lever 222 is fixed.

Further, the gear fixing member 232 includes a gear groove 233, the gear groove 233 is fixed to the second end of the second adjusting lever 222, and the gear groove 233 has a plurality of gear grooves 234, the gear grooves 234 are sequentially arranged along the extending direction of the second adjusting lever 222, and when the second end of the first adjusting lever 212 and the second end of the second adjusting lever 222 are away from each other by a predetermined distance, the other end of the gear lever 231 abuts against the corresponding gear groove 234.

Further, the shift position fixing member 232 includes a coupling sleeve 235 and a nut 236, a first end of the coupling sleeve 235 is pivotally coupled to a second end of the second adjustment lever 222, and the nut 236 is rotatably coupled to the second end of the coupling sleeve 235 about a central axis of the coupling sleeve 235. Wherein the other end of the shift lever 231 is inserted into the coupling sleeve 235, and the shift lever 231 is threadedly engaged with the nut 236.

Furthermore, the first engaging end 211 and the second engaging end 221 are respectively sleeved with a detachable and replaceable soft rubber sleeve.

Further, the neck brace 10 includes: the lifting device comprises a base 11, a flexible lifting piece 12 and a lifting structure 13, wherein the flexible lifting piece 12 covers one side surface of the base 11. The lifting structure 13 is installed on the base 11, the lifting structure 13 includes a lifting end 131, the lifting end 131 lifts the flexible lifting member 12 to ascend or descend, wherein the flexible lifting member 12 is in a single wave peak shape.

Further, the lifting structure 13 further includes a threaded rod 132, a first end of the threaded rod 132 is connected to the lifting end 131, a second end of the threaded rod 132 passes through the base 11, and the base 11 is provided with a threaded hole in threaded engagement with the threaded rod 132.

Further, the lifting structure 13 further includes a threaded rod 132 and a rotating sleeve 133, the base 11 is provided with a mounting through hole 14, the rotating sleeve 133 is rotatably mounted in the mounting through hole 14, a first end of the threaded rod 132 is connected with the lifting end 131, a second end of the threaded rod 132 passes through the rotating sleeve 133, and the rotating sleeve 133 is provided with an internal thread in threaded fit with the threaded rod 132.

Further, the fixing portion 30 includes: the support structure comprises a first support end 31, a second support end 32 and a telescopic member 33, wherein the telescopic member 33 comprises a telescopic screw rod 331, a socket rod 332 and a threaded sleeve 333, and the socket rod 332 is provided with an axial insertion hole; the first end of the sleeved rod 332 is fixedly connected with the second support end 32, the threaded sleeve 333 is rotatably connected to the second end of the sleeved rod 332 around the central axis of the sleeved rod 332, the first end of the telescopic screw rod 331 is pivotally connected with the first support end 31, the second end of the telescopic screw rod 331 is inserted into the axial insertion hole, and the threaded sleeve 333 is in threaded engagement with the telescopic screw rod 331. The jaw opening portion 20 is connected to the socket rod 332, and the jaw opening portion 20 is located at an intermediate position between the first support end 31 and the second support end 32.

The utility model has at least the following beneficial effects:

the temporomandibular joint assist device of the present invention comprises: a neck support part 10, a jaw opening part 20 and a fixing part 30. Wherein the neck rest 10 is used to elevate the neck of the patient when the patient lies down, assisting the patient to open the mouth naturally. The jaw part 20 is connected to a fixing part 30, and the fixing part 30 is configured to be mounted on a fixing body (i.e., a side wall of a side of the nuclear magnetic resonance scanning apparatus facing the patient) to fixedly support the jaw part 20. The jaw opening portion 20 includes a first expansion structure 21 and a second expansion structure 22, the first expansion structure 21 has a first engaging end 211, the second expansion structure 22 has a second engaging end 221, when the jaw opening portion 20 is placed in the mouth of the patient, the first engaging end 211 is used for abutting against the maxilla, and the second engaging end 221 is used for abutting against the mandible (i.e., the first engaging end 211 abuts against the upper row of teeth, and the second engaging end 221 is against the lower row of teeth). First expansion structure 21 is connected with second expansion structure 22 to make first occlusal end 211 and second occlusal end 221 can keep away from each other or can be close to each other, then adjust the distance between maxilla and the mandible, impel patient's oral cavity to open different angles and maintain same posture and same position and keep for a long time, reduce patient's uncomfortable and feel, promoted the success rate that detects simultaneously, avoid repeated detection.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

Fig. 1 is a perspective view of a neck support portion of a temporomandibular joint auxiliary device according to a first embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view of a neck support portion of the temporomandibular joint auxiliary device according to the first embodiment of the present invention;

fig. 3 is a front view of an assembling structure of the jaw opening part and the fixing part of the temporomandibular joint auxiliary device according to the first embodiment of the present invention;

FIG. 4 is an enlarged view at A in FIG. 3;

fig. 5 is a schematic structural view of the jaw opening portion of the temporomandibular joint auxiliary device according to the first embodiment of the present invention;

FIG. 6 is an enlarged view at B in FIG. 5;

FIG. 7 is a schematic cross-sectional view of the neck support portion of the temporomandibular joint auxiliary device according to the second embodiment of the present invention;

fig. 8 is a schematic structural view of the jaw opening portion of the temporomandibular joint auxiliary device according to the third embodiment of the present invention;

fig. 9 is an enlarged view at C in fig. 8.

Wherein, in the figures, the respective reference numerals:

10. a neck support portion; 11. a base; 12. a flexible lifting member; 13. a lifting structure; 131. a lifting end; 132. a threaded rod; 133. a rotating sleeve; 14. mounting a through hole; 20. a jaw opening part; 21. a first expanded configuration; 211. a first engaging end; 212. a first adjusting lever; 22. a second expanded configuration; 221. a second engaging end; 222. a second adjusting lever; 23. an adjustment structure; 231. a gear lever; 232. a shift position fixing member; 233. a shift groove member; 234. a gear groove; 235. a connecting sleeve; 236. a nut; 30. a fixed part; 31. a first support end; 32. a second support end; 33. a telescoping member; 331. a telescopic screw rod; 332. a sleeved rod; 333. a threaded sleeve; 41. a first bearing; 42. a second bearing; 43. and a third bearing.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the utility model and are not to be construed as limiting the utility model.

In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention.

Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

The first embodiment is as follows:

as shown in fig. 1 to 6, in a first embodiment, a temporomandibular joint assistance device comprises: a neck support part 10, a jaw opening part 20 and a fixing part 30. Wherein, the neck support part 10 is used for raising the patient's neck to raise the jaw when the patient lies down, so that the patient opens the mouth naturally, or the patient has an action tendency of opening the mouth (preferably, the neck support part 10 is contacted with the patient's neck). Jaw part 20 is connected in fixed part 30, fixed part 30 is used for installing at the fixed body (be the inside wall of the facial line circle of nuclear magnetic resonance scanning equipment promptly), jaw part 20 is opened in order to fixed support, avoid the gravity of auxiliary device itself to cause the burden for the user, cause the discomfort (temporal jaw joint auxiliary device in this technical scheme is through the oral cavity contact with the patient, and carry out the auxiliary stay to the oral cavity, and then reach the oral cavity and keep same posture and the same technological effect of same position of opening for a long time, can understand that the patient is in the scanning zone of nuclear magnetic resonance scanning equipment, temporal jaw joint auxiliary device's jaw part 20 just is relative with the oral cavity of patient). The jaw opening part 20 comprises a first expansion structure 21 and a second expansion structure 22, the first expansion structure 21 has a first engagement end 211, the second expansion structure 22 has a second engagement end 221, the first engagement end 211 is used for abutting against the maxilla, and the second engagement end 221 is used for abutting against the mandible (namely, the first engagement end 211 abuts against the upper row of teeth and the second engagement end 221 is used for abutting against the lower row of teeth). The first expandable structure 21 is coupled to the second expandable structure 22 such that the first and second engagement ends 211 and 221 are distal or proximal to each other (it is understood that the first and second expandable structures 21 and 22 are coupled to each other and can move relative to each other).

As a further limitation of the present embodiment, the jaw opening portion 20 further includes an adjustment structure 23. The first expandable structure 21 also has a first adjustment bar 212 with the first engagement end 211 disposed on a first end of the first adjustment bar 212. The second expandable structure 22 also has a second adjustment stem 222, and the second engagement end 221 is disposed on a first end of the second adjustment stem 222. Preferably, the first adjustment lever 212 is pivotally connected to the second adjustment lever 222 (i.e., the first adjustment lever 212 is hinged to the second adjustment lever 222 through a hinge point about which the first adjustment lever 212 and the second adjustment lever 222 can move relative to each other), and the adjustment structure 23 is mounted between the second end of the first adjustment lever 212 and the second end of the second adjustment lever 222, and the adjustment structure 23 adjusts the second end of the first adjustment lever 212 and the second end of the second adjustment lever 222 to rotate about the pivot connection point to move away from or toward each other. Due to the limited spatial structure of the oral cavity, the first adjustment rod 212 and the second adjustment rod 222 may preferably be cylindrical structures, which are long and narrow, and the overall structure has a small volume, so that the whole device can be flexibly used in the oral cavity of a patient.

As a further limitation of the present embodiment, the adjusting structure 23 includes: a shift position lever 231, and a shift position fixing member 232, one end of the shift position lever 231 being pivotally connected to a second end of the second adjustment lever 222. The gear fixing member 232 is disposed on a second end of the first adjustment lever 212 (it can be understood that the gear lever 231 is coupled with the first and second adjustment levers 212 and 222 to form a triangular structure). Correspondingly, one end of the shift position fixing member 232 is pivotally connected to a second end of the first adjustment lever 212. When the second end of the first adjustment lever 212 and the second end of the second adjustment lever 222 are away from each other to a predetermined distance (alternatively, the moving process between the second end of the first adjustment lever 212 and the second end of the second adjustment lever 222 can be completed by manual control or electric control through a driving device), the gear fixing member 232 is used to fix the gear rod 231 so as to fix the relative position of the second end of the first adjustment lever 212 and the second end of the second adjustment lever 222 (it can be understood that, when the first end of the first adjustment lever 212 and the first end of the second adjustment lever 222 abut against the maxilla and the mandible of the patient respectively, the patient is easy to fatigue due to the fact that the patient needs to keep a posture of opening the mouth for a long time, and then an action of subconsciously closing the mouth is generated, so that an acting force is generated on the first end of the first adjustment lever 212 and the first end of the second adjustment lever 222, the first adjusting rod 212 and the second adjusting rod 222 are reset by force, the included angle between the two rods becomes smaller, and the gear fixing member 232 can keep the adjusting structure 23 in a fixed state, so as to assist the patient to keep the same open posture for a long time, thereby facilitating detection).

As seen in FIGS. 5 and 6, the shift position fixing member 232 includes a coupling sleeve 235 and a nut 236, a first end of the coupling sleeve 235 is pivotally coupled to a second end of the second adjustment lever 222, and the nut 236 is rotatably coupled to the second end of the coupling sleeve 235 about a central axis of the coupling sleeve 235 such that the nut 236 is coaxially nested with the coupling sleeve 235. Wherein the other end of the shift lever 231 is inserted into the coupling sleeve 235, and the shift lever 231 is threadedly engaged with the nut 236. It will be appreciated that the shift lever 231 is coupled to the second end of the first adjustment lever 212 via a coupling sleeve 235 and a nut 236 (i.e., the coupling sleeve 235 and the nut 236 are disposed between the second end of the first adjustment lever 212 and the second end of the second adjustment lever 222, one end of the coupling sleeve 235 is pivotally coupled to the second adjustment lever 222 via the nut 236, and the other end of the coupling sleeve 235 is pivotally coupled to the second end of the first adjustment lever 212). When the adjusting device is used, a user can firstly connect one end of the gear rod 231, which is far away from the second end of the second adjusting rod 222, with the nut 236 through the thread, and then connect one end of the connecting sleeve 235 through the nut 236, and connect the other end of the connecting sleeve 235 with the second end of the first adjusting rod 212 through the pivot, so as to fix the first adjusting rod 212 and the second adjusting rod 222 and limit the two rods from approaching each other. Preferably, a second bearing 42 is provided between the coupling sleeve 235 and the nut 236 to enhance the coupling strength therebetween; meanwhile, when the length of the connection sleeve 235 is long enough, the distance between the second adjustment rod 222 and the first adjustment rod 212 can be adjusted by rotating the nut 236 to extend or retract the shift lever 231 inside the connection sleeve 235.

As a further limitation of this embodiment, the first occlusion end 211 and the second occlusion end 221 are both sleeved with a detachable and replaceable soft rubber sleeve (not shown), the soft rubber sleeve can be replaced, and medical workers can sterilize the soft rubber sleeve to enable the soft rubber sleeve to be reusable and more sanitary. The soft characteristics of the soft rubber sleeve can protect the oral cavity, so that the user is not easy to damage teeth when biting with the first occlusion end 211 and the second occlusion end 221.

As a further limitation of the present embodiment, the neck brace 10 includes: the patient lifting device comprises a base 11, a flexible lifting piece 12 and a lifting structure 13, wherein the flexible lifting piece 12 covers one side surface of the base 11 (namely, the flexible lifting piece 12 is positioned below the neck of a patient and is in contact with the neck of the patient). The lifting structure 13 is installed on the base 11, and the base 11 can be fixedly arranged in a human body lying area and the position of the neck of a human body of the nuclear magnetic resonance detection equipment. The lifting structure 13 comprises a lifting end 131, and according to the actual situation of the patient, the lifting end 131 lifts the flexible lifting piece 12 to ascend or descend so as to lift the neck of the patient and provide auxiliary force to the patient in different degrees. Wherein, the flexible lifting piece 12 is in a single wave peak shape and is matched with the shape of the neck of a human body, so that the comfort of a patient is kept.

As a further limitation of this embodiment, the lifting structure 13 further includes a threaded rod 132, a first end of the threaded rod 132 is connected to the lifting end 131, the lifting end 131 is connected to an inner wall of the flexible lifting member 12 (i.e., the flexible lifting member 12 is provided with a cavity, the whole lifting structure 13 is disposed inside the cavity of the flexible lifting member 12), and a second end of the threaded rod 132 passes through the base 11. The base 11 is provided with a screw hole that is screwed into the screw rod 132. It can be understood that, the user can adjust the height of the neck rest portion 10 by manually rotating the second end of the threaded rod 132 to lift the threaded rod 132 relative to the base 11 (i.e. the lifting end 131 drives the flexible lifting member 12 to be higher or lower). The shape of the lifting end 131 is matched with the shape of the flexible lifting piece 12 (single peak shape), and the region of the flexible lifting piece 12 corresponding to the position of the lifting end 131 is always in contact with the neck of the patient, so that the patient does not feel uncomfortable when adjusting the height of the neck supporting part 10. Optionally, the second end of the threaded rod 132 may be connected to an external driving device (which may be a driving motor or a driving assembly) to drive the threaded rod 132 to rotate, which is more convenient and labor-saving.

As a further limitation of the present embodiment, the fixing portion 30 includes: the support structure comprises a first support end 31, a second support end 32 and a telescopic member 33, wherein the telescopic member 33 comprises a telescopic screw rod 331, a socket rod 332 and a threaded sleeve 333, and the socket rod 332 is provided with an axial insertion hole. The first end of the sleeved rod 332 is fixedly connected with the second support end 32, the threaded sleeve 333 is rotatably connected to the second end of the sleeved rod 332 around the central axis of the sleeved rod 332 (preferably, the first bearing 41 is arranged between the sleeved rod 332 and the threaded sleeve 333), the first end of the telescopic screw rod 331 is pivotally connected to the first support end 31, the second end of the telescopic screw rod 331 is inserted into the axial insertion hole, and the threaded sleeve 333 is in threaded engagement with the telescopic screw rod 331, and a user can rotate the threaded sleeve 333 to extend or retract the telescopic screw rod 331 in the axial insertion hole, so as to adjust the length of the sleeved rod 332 (i.e., the distance between the first support end 31 and the second support end 32), thereby facilitating the operation of the user. Wherein, the jaw opening part 20 is connected with the socket rod 332. Preferably, the jaw opening portion 20 is located at an intermediate position between the first support end 31 and the second support end 32. The first support end 31 and the second support end 32 are located on a side wall of the side of the nuclear magnetic resonance scanning apparatus facing the patient. When the patient lies flat in the lying area of the nuclear magnetic resonance scanning device, the first supporting end 31 and the second supporting end 32 are connected with the device side walls on the two sides of the patient (it can be understood that the connection here can be connected in a detachable connection mode such as a buckle, which is convenient for user operation and more humanized).

Example two:

as shown in fig. 7, it shows a cross-sectional structure diagram of a neck support portion of a temporomandibular joint auxiliary device of the second embodiment of the present invention. The second embodiment has the following differences compared with the first embodiment.

As a further limitation of this embodiment, the lifting structure 13 further includes a threaded rod 132 and a rotating sleeve 133, the base 11 is opened with a mounting through hole 14, the rotating sleeve 133 is rotatably mounted in the mounting through hole 14, a first end of the threaded rod 132 is connected with the lifting end 131, a second end of the threaded rod 132 passes through the rotating sleeve 133, and the rotating sleeve 133 is provided with an internal thread which is in threaded fit with the threaded rod 132. Preferably, the second end of the threaded rod 132 passes through the third bearing 43 and then engages with the rotating sleeve 133 to maintain the balance of the elevating end 131 during elevating, without any significant swing and discomfort to the patient. Alternatively, the second end of the threaded rod 132 may be connected to an external driving device (which may be a driving motor, or a driving assembly) to drive the threaded rod 132 to rotate; alternatively, the rotary sleeve 133 is connected to an external driving device, so as to drive the threaded rod 132 to rotate and lift.

Compared with the first embodiment, the second embodiment has the same structure except that the above structure is different, and the description thereof is omitted.

Example three:

as shown in fig. 8 and 9, it shows a schematic structural view of the jaw opening portion of the temporomandibular joint auxiliary device of the third embodiment of the present invention. The third embodiment differs from the first and second embodiments in the following point.

In the third embodiment, the gear fixing member 232 includes a gear groove 233, the gear groove 233 is fixed to the second end of the second adjusting lever 222, and one end of the gear lever 231 is pivotally coupled to the second end of the first adjusting lever 212. The plurality of shift grooves 234 are formed in the shift groove member 233, and one end of the shift lever 231 and the second end of the second adjustment lever 222 are coupled to each other via the shift groove member 233. Moreover, the plurality of gear slots 234 are sequentially arranged along the extending direction of the second adjusting lever 222 (i.e., the plurality of gear slots 234 are linearly and alternately arranged along the extending direction of the second adjusting lever 222), and the distance between the plurality of gear slots 234 along the direction in which the first adjusting lever 212 and the second adjusting lever 222 are far away from or close to each other is the distance difference between each gear, and the distance difference can also be understood as the distance between the first end of the first adjusting lever 212 and the first end of the second adjusting lever 222; that is, in the above-mentioned triangular structure, the length of one side changes, and the internal angle corresponding to the side changes accordingly, and the changed internal angle in the structure is the angle of opening of the patient's mouth correspondingly). When the second end of the first adjustment lever 212 and the second end of the second adjustment lever 222 are away from each other by a predetermined distance, the other end of the shift lever 231 abuts against the corresponding shift groove 234. Preferably, the depth of the shift position groove 234 is appropriately deepened to prevent the shift position groove 234 and the shift position lever 231 from being easily assembled and separated due to fatigue of a user who moves his or her mouth subconsciously.

Compared with the first and second embodiments, the third embodiment has the same structure except for the above structure, and is not repeated herein.

The temporomandibular joint auxiliary device of the utility model has the following advantages:

1. the problem that the patient cannot keep the stability of the same posture and the uniformity of the position when the nuclear magnetic resonance conventional scanning is carried out is solved;

2. the adjustable auxiliary device reduces the discomfort of the patient; and the operation is simple and more humanized.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims (10)

1. A temporomandibular joint assistance device comprising:

the neck support part (10), the neck support part (10) is used for lifting the neck of the patient when the patient lies down to enable the patient to raise the jaw and the head;

the jaw opening part (20), the jaw opening part (20) comprises a first expansion structure (21) and a second expansion structure (22), the first expansion structure (21) is provided with a first occlusion end (211), the second expansion structure (22) is provided with a second occlusion end (221), the first occlusion end (211) is used for abutting against the maxilla, the second occlusion end (221) is used for abutting against the mandible, the first expansion structure (21) is connected with the second expansion structure (22) so that the first occlusion end (211) and the second occlusion end (221) can be far away from each other or can be close to each other;

a fixing part (30), the jaw opening part (20) is connected to the fixing part (30), and the fixing part (30) is used for being installed on a fixing body to fixedly support the jaw opening part (20).

2. Temporomandibular joint assistance device of claim 1,

the jaw opening part (20) further comprises an adjusting structure (23);

the first expandable structure (21) further having a first adjustment bar (212), the first snap end (211) being disposed on a first end of the first adjustment bar (212);

the second expansion structure (22) further having a second adjustment bar (222), the second engagement end (221) being disposed on a first end of the second adjustment bar (222);

the first adjusting lever (212) is pivotally connected with the second adjusting lever (222), and the adjusting structure (23) is assembled between the second end of the first adjusting lever (212) and the second end of the second adjusting lever (222), and the adjusting structure (23) adjusts the second end of the first adjusting lever (212) and the second end of the second adjusting lever (222) to rotate around the pivotal connection point to be away from or close to each other.

3. Temporomandibular joint assistance device of claim 2,

the adjustment structure (23) comprises:

a gear lever (231), one end of the gear lever (231) being pivotally connected with the second end of the first adjustment lever (212);

the gear fixing member (232) is arranged at the second end of the second adjusting rod (222), and when the second end of the first adjusting rod (212) and the second end of the second adjusting rod (222) are away from each other to a predetermined distance, the gear fixing member (232) is used for fixing the gear rod (231) so that the relative position of the second end of the first adjusting rod (212) and the second end of the second adjusting rod (222) is fixed.

4. Temporomandibular joint assistance device of claim 3,

the gear fixing member (232) comprises a gear groove piece (233), the gear groove piece (233) is fixed to the second end of the second adjusting rod (222), a plurality of gear grooves (234) are formed in the gear groove piece (233), the gear grooves (234) are sequentially arranged along the extending direction of the second adjusting rod (222), and when the second end of the first adjusting rod (212) and the second end of the second adjusting rod (222) are far away from each other to a preset distance, the other end of the gear rod (231) abuts against the corresponding gear groove (234).

5. Temporomandibular joint assistance device of claim 3,

the gear fixing member (232) comprises a connecting sleeve (235) and a nut (236), a first end of the connecting sleeve (235) is pivotally connected with a second end of the second adjusting rod (222), and the nut (236) is rotatably connected with the second end of the connecting sleeve (235) around the central axis of the connecting sleeve (235);

wherein the other end of the shift lever 231 is inserted into the coupling sleeve 235, and the shift lever 231 is threadedly engaged with the nut 236.

6. Temporomandibular joint assistance device according to any one of claims 1 to 5,

the first occlusion end (211) and the second occlusion end (221) are sleeved with detachable and replaceable soft rubber sleeves.

7. Temporomandibular joint assistance device according to any one of claims 1 to 5,

the neck rest (10) comprises:

a base (11);

the flexible lifting piece (12) covers one side surface of the base (11);

elevation structure (13), elevation structure (13) install in base (11), elevation structure (13) are including lift end (131), lift end (131) lift flexible lifting member (12) rise or descend, wherein, flexible lifting member (12) are single crest form.

8. Temporomandibular joint assistance device of claim 7,

the lifting structure (13) further comprises a threaded rod (132), the first end of the threaded rod (132) is connected with the lifting end (131), the second end of the threaded rod (132) penetrates through the base (11), and the base (11) is provided with a threaded hole in threaded fit with the threaded rod (132).

9. Temporomandibular joint assistance device of claim 7,

elevation structure (13) still include threaded rod (132) and swivel sleeve (133), base (11) are opened there are installation through-hole (14), swivel sleeve (133) rotationally install in installation through-hole (14), the first end of threaded rod (132) with lift end (131) are connected, the second end of threaded rod (132) is passed swivel sleeve (133), and, swivel sleeve (133) be equipped with threaded rod (132) screw-thread fit's internal thread.

10. Temporomandibular joint assistance device of claim 7,

the fixing part (30) includes:

a first support end (31);

a second support end (32);

the telescopic component (33) comprises a telescopic screw rod (331), a socket rod (332) and a threaded sleeve (333), wherein the socket rod (332) is provided with an axial insertion hole;

the first end of the sleeve rod (332) is fixedly connected with the second supporting end (32), the threaded sleeve (333) can be rotatably connected to the second end of the sleeve rod (332) around the central axis of the sleeve rod (332), the first end of the telescopic screw rod (331) is pivotally connected with the first supporting end (31), the second end of the telescopic screw rod (331) is inserted into the axial insertion hole, and the threaded sleeve (333) is in threaded engagement with the telescopic screw rod (331);

wherein the jaw opening part (20) is connected to the socket rod (332), and the jaw opening part (20) is located at an intermediate position between the first support end (31) and the second support end (32).

Images