CN215021518U - Lower jaw support - Google Patents

Abstract

The utility model discloses a lower jaw supporting piece, which comprises a lower jaw fixing part and a head fixing part, wherein the lower jaw fixing part comprises a first group of lower jaw fixing parts and a second group of lower jaw fixing parts which are respectively connected with the two ends of the head fixing part, the first group of lower jaw fixing parts and the second group of lower jaw fixing parts respectively comprise a first expansion part and a second expansion part, one end of the second expansion part is telescopically connected with the first expansion part, the other end of the second expansion part is rotatably connected with one end of the head fixing part, the lower jaw supporting piece takes the forehead or the head as an acting point and takes the lower jaw angle as a fulcrum based on a mechanical angle, by adjusting the lengths of the first telescopic part and the second telescopic part and adjusting the rotating angles of the lower jaw fixing part and the head fixing part, the lower jaw fixing part is propped against the lower jaw angle, the lower jaw supporting pad is attached to the lower jaw, and then the mandible angle is supported towards the front upper part, and the function of continuously opening the air passage can be achieved after the direction is fixed.

Description

Lower jaw support

Technical Field

The utility model relates to a lower jaw holds in palm a technical field, concretely relates to sustainable open air flue's lower jaw holds in palm piece.

Background

During natural deep sleep, deep sedation and vein general anesthesia, people are easy to have tongue root tenesmus, and particularly in patients with snore and obstructive sleep apnea syndrome, respiratory tract obstruction can be caused, and if the situations of dyspnea and hypoxia are easy to occur without timely treatment, suffocation death can be caused seriously.

During surgery, how to establish and maintain an unobstructed airway in a patient is a prerequisite for maintaining proper ventilation of the patient. In clinical practice, it is found that patients are easy to have the phenomena of mental confusion, hypopnea, tongue root tenesmus and the like after anesthesia, so that the conditions of unsmooth ventilation, hypoxemia and even asphyxia are caused. To ensure that the respiratory tract of a patient is unobstructed, medical staff is often required to lean the head of the patient backward and support the lower jaw to open the airway as much as possible.

Oropharyngeal airway, nasopharyngeal airway and manipulation are commonly adopted clinically to raise the chin to open the airway, but oropharyngeal airway and nasopharyngeal airway easily damage the respiratory mucosa of patients, generate obvious discomfort, often cause mucosa damage bleeding, and have limited effect of smoothing airway. Lifting the chin by the back of the head requires the thumb of the medical staff to separate the lips of the mouth of the patient, and supporting the angle of the mandible forward and upward by the two hands to open the airway until the subsequent medical operation can be carried out. This method is laborious, sometimes requiring a long time, and does not liberate both hands of the medical staff.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a lower jaw support to solve at least one problem that exists among the above-mentioned prior art.

In order to solve the above problem, the utility model provides a lower jaw holding piece, this lower jaw holding piece include with human lower jaw complex lower jaw fixed part and with human forehead or head complex head mounting, the lower jaw fixed part is including connecting respectively in the first lower jaw fixed part of group and the second lower jaw fixed part of group at the both ends of head mounting, first lower jaw fixed part of group and second lower jaw fixed part of group include first pars contractilis and second pars contractilis respectively, wherein the first pars contractilis and the laminating of human lower jaw one side of first lower jaw fixed part of first group, the one end of the second pars contractilis of first lower jaw fixed part of first group and the first pars contractilis scalable connection of first lower jaw fixed part, the other end of the second pars contractilis of first group lower jaw fixed part and the one end rotatable coupling of head mounting, and the laminating of first pars contractilis and human one side of second group lower jaw fixed part, the one end of the second pars contractilis of second lower jaw fixed part of second group and the first pars contractilis scalable of second jaw fixed part of second group The other end of the second telescopic part of the second set of lower jaw fixing parts is rotatably connected with the other end of the head fixing part; the lower jaw supporting piece is based on a mechanical angle, the forehead or the head is used as an acting point, the lower jaw angle is used as a fulcrum, the head fixing piece is used for ejecting the lower jaw fixing part below the lower jaw angle by adjusting the lengths of the first telescopic part and the second telescopic part and adjusting the rotating angles of the lower jaw fixing part and the head fixing piece, the lower jaw supporting cushion is attached to the lower jaw, the lower jaw angle is further supported to the front upper side, and the function of continuously opening an air passage can be achieved after the direction is fixed.

In one embodiment, the head fixing member includes a forehead pad and first and second connecting portions, upper ends of the first and second connecting portions are connected to two ends of the forehead pad, and lower ends of the first and second connecting portions are rotatably or fixedly connected to the second telescopic portions of the first and second sets of mandible fixing portions, respectively.

In one embodiment, the second telescopic portion of the first set of mandibular fixation portions and the first connecting portion and the second telescopic portion of the second set of mandibular fixation portions and the second connecting portion are rotatably connected by the same or different rotational structures.

In one embodiment, the rotating structure is a ball hinge including a ball body connected to or integrally formed with an upper end of the second telescopic part and a hinge groove connected to a lower end of the first connecting part or the second connecting part, the ball body being rotatably installed in the hinge groove and defined by an outer circumference of the hinge groove so as not to be escaped from the hinge groove; preferably, the hinge slot is provided with a fixing portion, and the ball is fixed in the hinge slot through the fixing portion.

In one embodiment, the first telescoping portion comprises a hollow portion, the second telescoping portion slidably mounted within the hollow portion of the first telescoping portion; or the second telescopic part comprises a hollow part, and the first telescopic part is slidably arranged in the hollow part of the first telescopic part; the first telescopic part or the second telescopic part is further provided with a locking structure, and the first telescopic part and the second telescopic part are locked with each other through the locking structure.

In one embodiment, the locking structure comprises a mount or a lock.

In one embodiment, the first telescopic part comprises a first telescopic rod and a lower jaw supporting part, the first telescopic rod and the lower jaw supporting part are telescopically/fixedly connected or integrally formed, and a circular arc concave angle is arranged at the joint of the lower jaw supporting part and the first telescopic rod to be matched with the shape of the lower jaw angle of a human body.

In one embodiment, the forehead pad is made of a material that is flexibly deformable and is provided with a flexible wrapper on the skin contacting side.

In one embodiment, the forehead pad is an elastic head cover, and two end portions of the elastic head cover are respectively connected with the first connecting portion and the second connecting portion.

In one embodiment, the mandibular tray further comprises a motorized structure coupled to and driving the rotation structure and/or the locking structure.

The utility model discloses one of following beneficial technological effect has at least:

first, the mandible support of the invention is light and handy, easy to implement, simple in structure and easy to operate.

Secondly, the lower jaw supporting piece can be used under the conditions of general anesthesia induction, vein anesthesia and emergency treatment, hands of medical staff are liberated, and the safety of a patient is protected.

And thirdly, the air passage is opened in a non-invasive manner, so that discomfort is reduced.

Fourthly, the lower jaw supporting piece is provided with a rotating structure and a telescopic structure, so that the lower jaw supporting piece can be perfectly attached to the angle of the lower jaw.

Fifthly, the lower jaw supporting piece of the invention can be suitable for adults and children, and has wide audience range.

Sixth, the use of the mandibular tray of the invention is not limited by the position, e.g., the patient may use it in a non-painful, laterally recumbent gastroscope position.

Seventh, the chin rest of the present invention is equipped with an elastic bandage that can be well stressed and firmly secure the chin rest to the head, and also assist in securing the mask.

Eighth, the mandibular tray of the present invention is easy to clean and reusable.

Drawings

Fig. 1 is a schematic view of a mandibular tray in accordance with an embodiment of the invention.

Fig. 2 is a schematic view of a thread expansion structure according to an embodiment of the present invention.

Fig. 3 is a schematic view of a telescopic structure of the locking device according to an embodiment of the present invention.

Fig. 4 is a schematic view of a telescopic structure of the fixing frame according to an embodiment of the present invention.

Fig. 5 is a schematic view of a rotation structure of the spherical hinge according to an embodiment of the present invention.

Fig. 6 is a schematic view of a rotary structure according to an embodiment of the present invention.

Fig. 7 is a schematic view of a headgear according to an embodiment of the present invention.

Detailed Description

The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings so that the objects, features and advantages of the invention can be more clearly understood. It should be understood that the embodiments shown in the drawings are not intended as limitations on the scope of the invention, but are merely illustrative of the true spirit of the technical solution of the invention.

In the following description, for the purposes of illustrating various disclosed embodiments, certain specific details are set forth in order to provide a thorough understanding of the various disclosed embodiments. One skilled in the relevant art will recognize, however, that the embodiments may be practiced without one or more of the specific details. In other instances, well-known devices, structures and techniques associated with this application may not be shown or described in detail to avoid unnecessarily obscuring the description of the embodiments.

Reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Thus, the appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

In the following description, for the sake of clarity, the structure and operation of the present invention will be described with the aid of directional terms, but the terms "front", "rear", "left", "right", "outer", "inner", "outer", "inward", "upper", "lower", etc. should be understood as words of convenience and not as words of limitation.

The application relates to a mandible support, which comprises a mandible fixing part matched with the mandible of a human body and a head fixing part matched with the forehead and the head of the human body, wherein the mandible fixing part comprises a first group of mandible fixing parts and a second group of mandible fixing parts which are respectively connected with the two ends of the head fixing part, the first group of mandible fixing parts and the second group of mandible fixing parts respectively comprise a first expansion part and a second expansion part, the first expansion part of the first group of mandible fixing parts is jointed with one side of the mandible of the human body, one end of the second expansion part of the first group of mandible fixing parts is telescopically connected with the first expansion part of the first group of mandible fixing parts, the other end of the second expansion part of the first group of mandible fixing parts is rotatably connected with one end of the head fixing part, the first expansion part of the second group of mandible fixing parts is jointed with the other side of the mandible of the human body, one end of the second expansion part of the second group of mandible fixing parts is telescopically connected with the first expansion part of the second group of the mandible fixing parts, the other end of the second telescopic part of the second set of lower jaw fixing parts is rotatably connected with the other end of the head fixing part; this lower jaw holds in the palm the piece based on mechanical angle, uses forehead portion or head as the impetus, uses the lower jaw angle as the fulcrum, pushes up the lower jaw fixed part in lower jaw angle below, and the lower jaw holds in the palm the laminating mandible to can be through the length of adjusting first pars contractilis and second pars contractilis and the rotation angle of adjusting lower jaw fixed part and head mounting, and then hold in the palm the lower jaw angle forward, can reach the function of continuously opening the air flue after fixing the direction.

The mandible rest is described below with reference to the accompanying drawings.

Fig. 1 is a perspective view of a mandibular tray in accordance with one embodiment of the present invention. As shown in fig. 1, the chin rest 100 includes a chin fixing portion 1 and a head fixing member 3. The lower jaw fixing part 1 comprises a first set of lower jaw fixing part 11 and a second set of lower jaw fixing part 12, the first set of lower jaw fixing part 11 and the second set of lower jaw fixing part 12 are similar in structure and shape and respectively comprise a first expansion part 101 and a second expansion part 102, wherein the first expansion part 101 of the first set of lower jaw fixing part 11 is attached to one side of the lower jaw of a human body, one end of the second expansion part 102 of the first set of lower jaw fixing part 11 is telescopically connected with the first expansion part 101 of the first set of lower jaw fixing part 11, the other end of the second expansion part 102 of the first set of lower jaw fixing part 11 is rotatably or fixedly connected with one end of the head fixing part 3, the first expansion part 101 of the second set of lower jaw fixing part 12 is attached to the other side of the lower jaw of the human body, one end of the second expansion part 102 of the second set of lower jaw fixing part 12 is telescopically connected with the first expansion part 101 of the second set of lower jaw fixing part 12, and the other end of the second expansion part 102 of the second set of the lower jaw fixing part 12 is rotatably connected with the other end of the head part 3 Or fixedly connected.

The first telescopic part 101 comprises a lower jaw supporting part 111 and a first telescopic rod 112, one end of the lower jaw supporting part 111 is fixedly connected with one end of the first telescopic rod 112, the other end of the lower jaw supporting part 111 is an arc-shaped end part 110, and a certain radian is set between the lower jaw supporting part 111 and the first telescopic rod 112 so as to adapt to the shape of the lower jaw of a human body. When the jaw supporting portion is used, the arc-shaped end portion 110 of the lower jaw supporting portion 111 contacts the angle of the lower jaw of the human body and takes the angle of the lower jaw as a fulcrum, the lower jaw supporting portion 111 fits the lower jaw of the human body, the first telescopic portion 101 abuts against the lower portion of the lower jaw, and the forehead pad 33 is placed on the forehead portion and fixed by taking the forehead portion as an acting point, which will be further described in detail below.

Alternatively, the jaw supporting part 111 and the first telescopic rod 112 are integrally formed.

Optionally, the lower jaw supporting portion 111 and the first telescopic rod 112 are provided with a telescopic connection, for example, the connection between the lower jaw supporting portion 111 and the first telescopic rod 112 is provided with a screw thread to realize the telescopic connection between the lower jaw supporting portion 111 and the first telescopic rod 112.

Optionally, the lower jaw supporting part 111 and the first telescopic rod 112 may also be rotatably connected by installing a rotating structure, such as a spherical hinge or a rotating structure, to rotate, and the lower jaw supporting part 111 may adjust the rotating amplitude according to the shape of the lower jaw to better fit the lower jaw.

Optionally, the material of the mandible supporting part 111 and/or the first telescopic rod 112 is metal, plastic or rubber, preferably, the harder stainless steel of the metal material.

Optionally, the jaw supporting part 111 and/or the first telescopic bar 112 may include a flexible wrapping material on the outside to increase comfort to the human body, such as sponge, rubber or fabric.

The first telescopic part 101 of the first set of mandible fixing parts 11 is matched with one side of the mandible of a human body, and one end of the second telescopic part 102 of the first set of mandible fixing parts 11 is telescopically connected with the first telescopic part 101 of the first set of mandible fixing parts 11; one end of the second expansion part 102 of the second mandible fixing part 12 is telescopically connected with the first expansion part 101 of the second mandible fixing part 12.

Optionally, the first telescopic part 101 and the second telescopic part 102 are fixedly connected, such as integrally formed or welded.

Preferably, the first telescopic part 101 is telescopically connected with the second telescopic part 102, the first telescopic part 101 comprises a hollow part, and the second telescopic part 102 is slidably mounted in the hollow part of the first telescopic part 101; or the second expansion part 102 comprises a hollow part, and the first expansion part 101 is slidably mounted in the hollow part of the second expansion part 102; the first telescopic part 101 or the second telescopic part 102 is further provided with a locking structure, mutual locking between the first telescopic part 101 and the second telescopic part 102 is achieved through the locking structure, and the locking structure comprises a fixing frame or a locking device or a thread structure.

Fig. 2, 3 and 4 show an embodiment in which the second expansion part 102 is provided with a hollow portion, and as shown in fig. 2, 3 and 4, the first telescopic rod 112 and the second expansion part 102 of the first expansion part 101 are telescopically connected, and both the first telescopic rod 112 and the second expansion part 102 are long rods with uniform thickness, and the cross section is circular, square or other shapes, preferably circular. The second telescopic part 102 comprises a housing 121 and a hollow part 122, and the shape of the hollow part 122 is identical to that of the first telescopic rod 112, i.e. the first telescopic rod 112 can be installed in the hollow part 122 of the second telescopic part 102 and can slide in the hollow part 122.

As shown in fig. 2, the first telescopic rod 112 and the second telescopic part 102 are extended and retracted by providing a thread structure, both the first telescopic rod 112 and the second telescopic part 102 are cylindrical long rods, the cross section of each long rod is circular, the second telescopic part 102 comprises a cylindrical shell 121 and a cylindrical hollow part 122 along the length direction, and the circular cross sections of the shell 121 and the hollow part 122 are concentric circles; the first telescopic rod 112 may be a cylindrical housing, or may be a solid cylinder, the diameter of the circular cross section of the hollow portion 122 of the second telescopic portion 102 is slightly larger than the diameter of the circular cross section of the first telescopic rod 112, an external thread 113 is arranged outside the first telescopic rod 112, an internal thread 123 is arranged in the housing 121 of the second telescopic portion 102, and the external thread 113 of the first telescopic rod 112 and the internal thread 123 of the second telescopic portion 102 are matched to realize telescopic adjustment.

In one embodiment, the first telescopic rod 112 and the second telescopic part 102 are locked by installing the locker 5. As shown in fig. 3, the first telescopic rod 112 and the second telescopic part 102 are both cylindrical long rods, the cross section of each long rod is circular, the second telescopic part 102 includes a cylindrical housing 121 and a cylindrical hollow part 122 along the length direction, the circular cross sections of the housing 121 and the hollow part 122 are concentric circles, the first telescopic rod 112 can be a cylindrical housing or a solid cylinder, the circular cross section diameter of the hollow part 122 of the second telescopic part 102 is slightly larger than the circular cross section diameter of the first telescopic rod 112, and the first telescopic rod 112 can slide in the hollow part 122; the locking device 5 comprises a fixed ring 51 and a locking ring 52, wherein the fixed ring 51 and the locking ring 52 are both cylindrical ring structures and are provided with hollow structures for installing the first telescopic rod 112 and the second telescopic part 102, an internal thread 521 is arranged in the locking ring 52, an external thread 511 is arranged outside the fixed ring 51, and the internal thread 521 of the locking ring 52 is matched with the external thread 511 of the fixed ring 51 so as to realize the relative fixation of the first telescopic rod 112 and the second telescopic part 102; in use, the first telescopic rod 112 and the second telescopic part 102 are relatively extended and contracted for a certain length, the fixing ring 51 is sleeved on the first telescopic rod 112 and the second telescopic part 102, then the locking ring 52 is rotated, and the locking ring 52 and the fixing ring 51 are screwed through the matching of the internal thread 521 of the locking ring 52 and the external thread 511 of the fixing ring 51, so that the first telescopic rod 112 and the second telescopic part 102 are relatively fixed.

As shown in fig. 4, the first telescopic rod 112 and the second telescopic part 102 are locked by the mounting bracket 6, both the first telescopic rod 112 and the second telescopic part 102 are cylindrical long rods, the cross section of each long rod is circular, the second telescopic part 102 comprises a cylindrical shell 121 and a cylindrical hollow part 122 along the length direction, the circular cross sections of the shell 121 and the hollow part 122 are concentric circles, the cross section diameter of the hollow part 122 is slightly larger than that of the first telescopic rod 112, and the first telescopic rod 112 can slide in the hollow part 122; the first telescopic rod 112 is also provided with a hollow structure 114, a fixing frame 6 is fixedly arranged in the hollow structure 114, the fixing frame 6 comprises a frame body 61 and a spring 63, a protruding portion 62 is arranged on the frame body 61, the protruding portion 62 can stretch out and draw back through the spring 63, the cross section of the protruding portion 62 is square or circular, preferably circular, a plurality of positioning holes are formed in the second telescopic portion 102, and the protruding portion 62 can stretch out of the second telescopic portion 102 through the positioning holes of the second telescopic portion 102 to enable the first telescopic rod 112 and the second telescopic portion 102 to be fixed. In order to ensure the positioning effect, the positioning hole on the second telescopic part 102 is matched with the section, shape and size of the convex part 62, when in use, the convex part 62 is pressed to compress the spring 63 so as to compress the convex part 62 into the first telescopic rod 112, the relative length of the first telescopic rod 112 and the second telescopic part 102 is adjusted, when the positions of the convex part 62 of the first telescopic rod 112 and the positioning hole of the second telescopic part 102 are overlapped, the resilience force of the spring 63 in a pressure-bearing state enables the convex part 62 to pass through the positioning hole, so that the second telescopic part 102 is clamped, and the positioning purpose is achieved; it is contemplated that the cross-section of the first telescoping member 112 and/or the second telescoping member 102 can be other shapes, such as rectangular or polygonal cross-section, and the cross-sectional shape of the hollow portion 122 of the second telescoping member 102 is consistent with the cross-sectional shape of the first telescoping member 112 such that the first telescoping member 112 can be slidably mounted within the hollow portion 122 of the second telescoping member 102. Optionally, the material of the second telescopic part 102 is metal, plastic or rubber, preferably stainless steel material among metal materials.

The head fixing member 3 includes a first connecting portion 31, a second connecting portion 32, and a forehead pad 33, wherein upper ends of the first connecting portion 31 and the second connecting portion 32 are connected to two ends of the forehead pad 33, and lower ends of the first connecting portion 31 and the second connecting portion 32 are rotatably or fixedly connected to the second stretching portions 102 of the first set of mandible fixing portions 11 and the second stretching portions 102 of the second set of mandible fixing portions 12 through a rotating structure.

Alternatively, the lower ends of the first connecting portion 31 and the second connecting portion 32 are fixedly connected to or integrally formed with the second stretchable portion 102 of the first set of mandible fixing portions 11 and the second stretchable portion 102 of the second set of mandible fixing portions 12 by welding, respectively.

Preferably, the lower ends of first connecting portion 31 and second connecting portion 32 are rotatably connected to second telescopic portion 102 of first set of mandible fixing portions 11 and second telescopic portion 102 of second set of mandible fixing portions 12, respectively, through a rotating structure, which may be, for example, a ball hinge or a rotating structure.

Wherein, the second telescopic part 102 of the first set of lower jaw fixing part 11 and the first connecting part 31 and the second telescopic part 102 of the second set of lower jaw fixing part 12 and the second connecting part 32 are rotatably connected through the same or different rotating structures.

Fig. 5 is a schematic view showing a rotation structure of a ball joint according to an embodiment of the present invention, as shown in fig. 5, the lower ends of the first connecting portion 31 and the second connecting portion 32 of the head fixing member 3 are rotatably connected to the second telescopic portion 102 of the first set of lower jaw fixing portions 11 and the second telescopic portion 102 of the second set of lower jaw fixing portions 12 respectively through a rotation structure, the rotating structure may be, for example, a ball hinge 2, the ball hinge 2 includes a ball 21 and a hinge groove 22, the ball 21 is fixedly connected to the upper end of the second telescopic part 102 of the first and second sets of mandible fixing parts 11 and 12 or integrally formed with the upper end of the second telescopic part 102, the hinge groove 22 is a circular shell and fixedly connected to the lower end of the first connecting part 31 or the second connecting part 32, respectively, the ball 21 is rotatably installed in the hinge groove 22 and is defined by the outer circumference of the hinge groove 22 and cannot be removed from the hinge groove 22; preferably, the hinge slot 22 is provided with a fixing portion 23, and the ball 21 is fixed in the hinge slot 22 by the fixing portion 23; the inner radius of the circular shell of the hinge slot 22 is slightly larger than the radius of the ball 21, the hinge slot 22 is provided with a circular opening 221, the ball 21 is installed on the circular shell of the hinge slot 22, the second telescopic part 32 extends out of the hinge slot 22 through the circular opening 221, the opening diameter of the circular opening 221 is slightly smaller than the diameter of the ball 21 of the second telescopic part 102, so that the ball 21 is installed in the hinge slot 22 of the head fixing part 3 and cannot slide off, when the second telescopic part 102 rotates to a proper angle relative to the first connecting part 31 or the second connecting part 32 through the ball 21, the relative fixation of the second telescopic part 102 and the first connecting part 31 and the second connecting part 32 can be realized by pressing the fixing part 23.

In the embodiment shown in fig. 5, the fixing portion 23 on the ball joint 2 is a snap structure, and the opening of the handle can be realized by rotating the ball 21, and the pressing of the handle can fix the ball 21; it is understood that the fixing portion 23 may be further configured as a bolt structure, that is, a bolt is disposed outside the hinge slot 22 and extends into the hinge slot 22 to fixedly connect the ball 21, the distance between the ball 21 and the hinge slot 22 can be adjusted by rotating the bolt, and the ball 21 can be fixed in the hinge slot 22 by rotating the bolt to a certain degree.

Optionally, the second telescopic parts 102 of the first and second sets of mandible fixing parts 11 and 12 and the first and second connecting parts 31 and 32 of the head fixing part 3 are rotated by the rotating structure 20, as shown in fig. 6, the rotating structure 20 includes a first rotating part 201, a second rotating part 202 and a pin 203, the first and second rotating parts 201 and 202 are movably rotated by the pin 203, one end of the pin 203 is provided with threads and is provided with a bolt matched with the threads, and tightening the bolt can realize relative fixing of the first and second rotating parts 201 and 202; the first rotating member 201 is fixedly connected with the head fixing member 3, the second rotating member 202 is fixedly connected with the second telescopic portion 102, the first connecting portion 31 and the second connecting portion 32 of the head fixing member 3 and the second telescopic portion 102 of the first set of mandible fixing portions 11 and the second set of mandible fixing portions 12 can rotate through the first rotating member 201 and the second rotating member 202, and after the first rotating member 201 and the second rotating member 202 rotate to a proper angle, bolts on the pin shafts 203 are tightened to relatively fix the first rotating member 201 and the second rotating member 202.

In another embodiment, the motion of the rotating structure 20 and/or the locking structure can be controlled electrically, for example, a motor can be provided to drive the rotating structure and/or the locking structure to move, and the motion of the motor can be controlled by a controller to realize automatic adjustment of the rotating structure and/or the locking structure, and an automatic switch, such as a tactile switch, can be provided as required to adjust the length between the first telescopic rod 112 and the second telescopic portion 102 and/or the rotation angle between the head fixing member 3 and the second telescopic portion 102 according to the shape of the head.

The first connecting portion 31 and the second connecting portion 32 are respectively provided with a groove hole 35 for installing an elastic bandage, the lower jaw supporting portion 111 of the lower jaw support 100 is attached to the lower jaw, the arc concave angle is abutted against the lower jaw angle, the length and the direction of the first telescopic rod 112 and the second telescopic portion 102 are adjusted according to the face shape, the head fixing member 3 and the second telescopic portion 102 are rotationally fixed according to the shape of the lower jaw, the groove holes 35 of the first connecting portion 31 and the second connecting portion 32 are internally connected with the elastic bandage, the forehead and the pillow positions are sleeved with the elastic bandage to better fix the lower jaw support 100, the elastic bandage has a certain width to buffer the local pressure on the head, the length can be adjusted to adapt to different heads, the elastic bandage can be well stressed, and the lower jaw support 100 is tightly fixed on the head to assist in fixing the head 3.

The connection points of the first connection part 31 and the second connection part 32 and the forehead cushion 33 are a second fulcrum 34, the forehead cushion 33 is a rectangular or oval cushion with a certain width, and the width of the forehead cushion 33 is smaller than that of a conventional forehead so as to ensure that the forehead cushion does not cover eyes; the second fulcrum 34 of the first connection portion 31 and the second connection portion 32 uses the forehead of the human body as an acting point, the arc-shaped end portion 110 on the lower jaw supporting portion 111 uses the angle of the lower jaw of the human body as an acting point, the first telescopic rod 112 and the second telescopic portion 102 adjust a certain length through the telescopic structure to enable the first telescopic rod 112 to be attached to the lower jaw of the human body, the second telescopic portion 102 rotates a certain angle through the rotating structure 2 to enable the angle of the lower jaw of the human body to move forwards and upwards and then to be fixed, and the forehead pad 33 is connected with the second fulcrum 34 and is placed on the forehead to buffer the pressure of the second fulcrum 34 on the forehead.

Preferably, the forehead pad 33 is made of a material capable of bending and deforming, and may be made of metal, rubber or plastic, preferably rubber, having certain plasticity, the forehead pad 33 can bend and deform without stretching, the forehead pad 33 can bend according to the shape of the forehead of the human body after covering the forehead of the human body so as to fit the forehead of the human body, two ends of the forehead pad 33 are fixedly connected with the first connecting portion 31 and the second connecting portion 32 at the second fulcrum 34, the second fulcrum 34 is fixed to the forehead through the forehead pad 33, the forehead pad 33 fits the forehead to buffer the discomfort caused by the local pressure on the forehead at the second fulcrum 34.

Preferably, the forehead pad 33 is provided with a flexible wrapping material, such as sponge or fabric, at least on the skin-contacting side to increase the comfort of the forehead pad 33 in contact with the forehead.

In order to more stably fix the chin rest, the forehead pad 33 may be modified to be a head cover 33, as shown in fig. 7, the head cover 33 is a ring-shaped elastic head cover 331 having a certain width, the first connecting portion 31 and the second connecting portion 32 are respectively connected to both ends of the ring-shaped elastic head cover 331, the head cover 33 can replace the elastic bandage function of the first connecting portion 31 and the second connecting portion 32, and the head cover 33 can be more easily worn on the head and more firmly fixed to the previous elastic bandage.

Optionally, the two ends of the head cover 33 may further be provided with elastic fastening bands 332, the elastic fastening bands 332 may be integrally formed or provided with adjusting buttons to adjust the length of the fastening bands, so as to adapt to different human anatomies, and the elastic fastening bands 332 may enhance the stability of the head cover 33.

The material of the annular elastic headgear 331 and the elastic fastening band 332 is not limited, and may be plastic, rubber, nylon, or the like, and rubber is preferable.

Optionally, headgear 33 may also be provided with a cushion 331, the width of cushion 331 being slightly greater than the width of headgear 33 to reduce the localized pressure of chin rest 100 on the forehead.

The preferred embodiments of the present invention have been described in detail, but it should be understood that various changes and modifications can be made by those skilled in the art after reading the above teaching of the present invention. Such equivalents are intended to fall within the scope of the claims appended hereto.

Claims (10)

1. The lower jaw supporting piece is characterized by comprising a lower jaw fixing part attached to the lower jaw of a human body and a head fixing part attached to the forehead or the head of the human body, wherein the lower jaw fixing part comprises a first set of lower jaw fixing parts and a second set of lower jaw fixing parts which are connected to two ends of the head fixing part respectively, the first set of lower jaw fixing parts and the second set of lower jaw fixing parts respectively comprise a first telescopic part and a second telescopic part, and the first telescopic part and the second telescopic part are respectively arranged on the first set of lower jaw fixing parts and the second telescopic part

The first telescopic part of the first set of mandible fixing parts is attached to the mandible on one side of the human body, one end of the second telescopic part of the first set of mandible fixing parts is in telescopic connection with the first telescopic part of the first set of mandible fixing parts, the other end of the second telescopic part of the first set of mandible fixing parts is in rotatable or fixed connection with one end of the head fixing part, and

the first telescopic part of the second set of mandible fixing part is attached to the mandible on the other side of the human body, one end of the second telescopic part of the second set of mandible fixing part is in telescopic connection with the first telescopic part of the second set of mandible fixing part, and the other end of the second telescopic part of the second set of mandible fixing part is in rotatable or fixed connection with the other end of the head fixing part.

2. The mandibular tray of claim 1, wherein the head securing member includes a brow pad and first and second connecting portions connected at upper ends thereof to opposite ends of the brow pad, and at lower ends thereof rotatably or fixedly connected to the second telescoping portions of the first and second sets of mandibular fixing portions, respectively.

3. The mandibular tray of claim 2, wherein the second telescoping portion of the first set of mandibular fixation portions is rotatably connected to the first connecting portion and the second telescoping portion of the second set of mandibular fixation portions is rotatably connected to the second connecting portion by the same or different rotational structure.

4. The mandibular tray of claim 3, wherein the rotating structure is a spherical hinge including a ball connected to or integrally formed with the upper end of the second telescoping section and a hinge slot connected to the lower end of the first or second connecting section, the ball rotatably mounted in the hinge slot and defined by the outer circumference of the hinge slot so as not to be removed from the hinge slot; preferably, the hinge slot is provided with a fixing portion, and the ball is fixed in the hinge slot through the fixing portion.

5. The mandibular tray of claim 3, wherein the first telescoping portion includes a hollow and the second telescoping portion is slidably mounted within the hollow of the first telescoping portion; or the second telescopic part comprises a hollow part, and the first telescopic part is slidably arranged in the hollow part of the first telescopic part; the first telescopic part or the second telescopic part is further provided with a locking structure, and the first telescopic part and the second telescopic part are locked with each other through the locking structure.

6. The mandibular tray of claim 5, wherein the locking structure comprises a mount or a lock.

7. The mandibular tray of claim 2, wherein the first telescoping section comprises a first telescoping bar and a mandibular support section, the first telescoping bar and the mandibular support section are telescopically/fixedly connected or integrally formed, and the connection between the mandibular support section and the first telescoping bar is radiused and concavely angled to conform to the shape of the human mandibular angle.

8. Chin rest according to claim 2, characterized in that the brow pad is made of a yieldably deformable material and is provided with a flexible wrapping material on the skin contacting side.

9. The chin rest of claim 8, wherein the forehead pad is an elastic headgear, and two ends of the elastic headgear are connected to the first connecting portion and the second connecting portion, respectively.

10. The mandibular tray of claim 5, further comprising a motorized structure connected to and driving operation of the rotating structure and/or the locking structure.

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