JP2006020907A - Jaw drawing and fixing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a jaw drawing and fixing device where a drawing direction and drawing force can be varied optionally, and drawing is unlikely to interfere with the ear of a user, a bolt, or the like, fitted in the case of surgical treatment. <P>SOLUTION: This jaw drawing and fixing device 1 is mainly provided with: a head part 6 constituted of a ring belt 14 and a mounting and holding part 18 mounted to the head part 5 of a patient 4; a pair of plate support parts constituted of a metal and which are fitted to the opposing positions of the head part 6, respectively; a pair of turning plates 3 constituted of a first plate and a second plate pivoted turnably with respect to the individual plate support parts via a rotation support shaft 24 and formed in a nearly L-shape; an extensible rubber band 8 connected with the turning end parts of the turning plates 3 for applying the drawing force for drawing a lower jaw part 22; and a chin cap 9 connected with one end of the rubber band 8 to abut on the low jaw part 22. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a jaw pulling and fixing device, and in particular, for fixing an affected part after performing a surgical procedure on a jaw fracture or the like, or for preventing and treating an opposite occlusion such as a mandibular frontal protrusion. The present invention relates to a jaw pulling and fixing device that can be used to pull a lower jaw.

  Conventionally, in orthodontics and the like, various instruments and devices have been used to treat malocclusions such as mandibular protrusions (receiving holes), maxillary protrusions (protrusions), and crowding (random eating). is there. For example, a typical example of orthodontic treatment is known in which an appliance called a bracket made of metal or ceramic is attached to each tooth in the oral cavity, and adjacent brackets are connected by a wire. ing. Then, by forcibly and continuously applying a force in a predetermined direction to the teeth in the oral cavity for a long period of time with this wire, the position of the teeth can be moved or the protruding direction of the teeth can be corrected. On the other hand, in the case of a mandibular frontal protrusion, etc., a jaw that corrects malocclusion from the outside of the jaw by combining a chin cap and retractor for forcibly pulling the lower jaw part of the treatment subject toward the occipital region A traction locking device is used.

  Here, as a jaw pulling and fixing device for performing orthodontic treatment or the like from the outside of the jaw, for example, the one shown in FIG. 5 is known. Here, the chin traction and fixation device 100 includes a back belt 103 that is in contact with the occipital region 102 of the user (corresponding to a treatment subject) 101, a side belt 105 that is in contact with the left and right side regions 104, and the frontal region A front belt 107 that is in contact with the portion 106 is connected by a circle belt 108 that is arranged so as to be orthogonal to the belts 103, 105, and 107, and a retractor 110 that is mounted on a head 109, It is mainly configured by a rubber band 111 connected to the side belt 105 and a chin cap 113 attached to the rubber band 111 and abutted on the lower jaw portion 112.

  A fixing bracket 114 formed of a coupling fixing bracket is attached to one end of the rubber band 111 so as to be attached to the side belt 105. The side belt 105 is provided with a fixing hole 118 that can be engaged with the fixing bracket 114. In addition, the chin cap 113 is curved in a concave shape in accordance with the shape of the lower jaw portion 112 so as to directly contact the lower jaw portion 112 of the user 101 and prevent unnecessary pain on the user 101 during towing. It is formed in a cup shape having a portion. Then, as shown in FIG. 5, the jaw pulling and fixing device 100 is attached to the user 101 and used continuously for a long time such as at bedtime, for example, to treat malocclusion such as a mandibular protrusion. be able to. In addition, it is desirable that these treatments be performed during the youth period of elementary school to middle school students or high school students whose bones are relatively soft at the stage of bone growth.

  Here, the fixing bracket 114 provided at the tip of the rubber band 111 can be attached to the fixing hole 118 by changing the attachment position in stages in order to adjust the traction force acting on the lower jaw portion 112. Thereby, the user 101 or its guardian can arbitrarily set a traction force suitable for treatment and attach the rubber band 111 to the side belt 105 at the attachment position. More specifically, the rubber band 111 is strongly stretched. In other words, when the elongation rate with respect to the initial length of the rubber band 111 is high, the elastic elastic force of the rubber band 111 causes a strong restoring force to return to the original length. Created. Therefore, by attaching the fixing bracket 114 to the side belt 105 at the attachment position 114a at which the strongest restoring force is obtained, a strong traction force acts on the lower jaw portion 112. On the other hand, if the rate of elongation relative to the initial length is low, only a less resilient force can be created. Therefore, when the fixing bracket 114 is attached to the side belt 105 at the attachment position 114b, only a weak traction force acts on the lower jaw portion 112. Thereby, the chin traction fixing device 100 can arbitrarily adjust the traction force acting on the lower jaw portion 112.

  In addition, the jaw pulling and fixing device 100 may be used in oral surgery or the like in addition to being used for the treatment of malocclusion described above in orthodontics. That is, it may be used to fix an affected part when there is a traffic accident or a congenital abnormality in the jaw, or after a surgical procedure such as surgery related to a jaw fracture. That is, since the movement of the temporomandibular joint is restricted by the chin cap 113, the rubber band 111, and the like, the chin cap 113 and the rubber band 111 can be fixed at a normal position until the affected part having a fracture or the like is cured.

  The above prior art is publicly practiced by those skilled in the art, and the applicant has no particular knowledge of the literature describing such prior art at the time of filing this application.

  However, the above-described jaw pulling and fixing device 100 may cause the following problems. That is, the rubber band 111 for applying a traction force to the lower jaw portion 112 is connected to the side belt 105 attached along the temporal region 104 of the user 101 as shown in FIG. At this time, as described above, the traction force acting on the lower jaw portion 112 can be adjusted by the attachment positions 114a and 114b of the fixing metal fitting 114 at one end of the rubber band 111. However, the direction of the traction force acting on the lower jaw 112 may be greatly displaced depending on the mounting positions 114a and 114b to which the fixing bracket 114 is mounted. That is, depending on the mounting positions 114 a and 114 b of the fixing metal 114, the pulling direction may act on the occipital region 102 of the user 101 or may act on the posterior neck portion 115 of the user 101. Therefore, it may be difficult to make the traction force and the traction direction always appropriate, and the correction effect and the traction effect by the chin traction fixing device 100 may not be fully enjoyed.

  In addition, as shown in FIG. 5, the fixing bracket 114 that fixes the rubber band 111 is attached to the fixing hole 118 of the side belt 105, and may be close to the ear portion 116 of the user 101. For this reason, there is a possibility that the side belt 105 or the rubber band 111 may come into contact with the ear portion 116 when the jaw pulling and fixing device 100 is mounted. As a result, there may be a problem in wearability such as giving the user 101 an unpleasant feel.

  Furthermore, when there is a congenital or acquired abnormality in the jaw 117, one end of a bolt (not shown) is embedded in the bone of the temporomandibular joint immediately below the ear 116, and a part of the bolt protrudes from the side of the face. There was a treatment to do. In such a case, in the conventional jaw pulling and fixing device, a case in which the side belt 105 and the rubber band 111 are in contact with the bolts is assumed, and the use of the jaw pulling and fixing device 100 may be hindered.

  Therefore, in the present invention, in view of the above circumstances, the traction direction and the traction force can be arbitrarily adjusted, and a rubber band or the like interferes with a user's ear part or a temporomandibular joint bolt at the time of wearing. It is an object of the present invention to provide a jaw pulling and fixing device with a small amount.

  In order to solve the above-described problems, the jaw pulling and fixing device according to the present invention includes a “head portion mounted on a user's head and a pair of plate support portions respectively installed at positions facing each other of the head portion. A rotation support shaft installed on the plate support portion, a rotation plate pivotally supported on the plate support portion via the rotation support shaft, and a lower jaw portion of the user A chin cap that is formed so as to be able to come into contact with the shape, and a connecting portion between the rotating end portion of the rotating plate and the chin cap are connected to each other, and the lower jaw portion of the user is connected to the occipital region by elastic stretching force. It is mainly comprised from what comprises the elastic part which pulls in a direction.

  Here, the head portion refers to a hat-like aspect known as a “retractor” in a conventional jaw pulling and fixing device, such as a device that is worn directly on the user's head, or the above-described retractor. And those constructed by combining a plurality of belts. And a pair of plate support part is attached to this head part. The shape of the plate support part and the material constituting the plate support part are not particularly limited, but it is possible to reliably support the rotational movement without hindering the rotation of the rotational plate described later. Thus, it is preferable to use a hard material such as metal, ceramics, or hard plastic that has a strong strength that is not easily deformed by stress.

  Furthermore, the rotation plate is a plate-like (plate-like) member that is pivotally supported via the rotation support shaft with respect to the plate support portion described above, and is made of a hard material like the plate support portion. It is preferable that it is comprised from these. And, the elastic end of the elastic band is connected to the rotating end of one end of the rotating plate (corresponding to the end opposite to the side pivotally supported by the plate support). A connecting portion is provided. This connecting part can be constituted by, for example, one or more through-holes that are perforated so as to penetrate the rotating plate, and one end of the elastic part is tied to the through-hole and fixed. To do. Thereby, an elastic part can be easily connected with a rotation plate.

  Furthermore, the elastic part can be diverted from a rubber band made of an existing rubber material, which is used in conventional jaw pulling and fixing devices. Traction force can be applied. Furthermore, the existing chin cap can be used as well. Therefore, detailed description is omitted here.

  Therefore, according to the jaw pulling and fixing device of the present invention, the rotation plate connected to the elastic part that can be expanded and contracted is pivotally supported with respect to the plate support part installed in the head part. Thereby, it becomes possible to arbitrarily change the pulling direction of the lower jaw portion pulled by the chin cap according to the rotation of the rotating plate. As a result, even when a weak traction force is applied, the traction direction can be set in the user's occipital direction, and vice versa.

  Thereby, a lower jaw part can be made into a traction state over a long time in the state which adjusted the traction direction and traction force. Furthermore, the rotation end of the rotation plate to which the elastic portion is coupled can be made to be in a state separated from the vicinity of the user's ear portion by rotation, as seen in the conventional chin traction fixing device, Interference with the ears and the like can be reduced, and the wearability (wearing feeling) of the user can be improved. In addition, since it is easy to adjust the appropriate traction force and traction direction, for example, even in the elementary school lower grades and preschool children, the chin traction fixation device of the present invention is worn by itself and corrective treatment is performed at bedtime, etc. Will be able to do.

  Further, the jaw pulling and fixing device according to the present invention has the above-described structure, in which “the head portion forms a wide band-like member in an annular shape, and the band inner surface of the band-like member is closely attached along the user's head circumference. A ring ring attached to the head in a state of being attached, and a mounting holder that is attached to the band ring body and substantially covers the vicinity of the top of the user's head and holds the wearing state of the band ring body It may also be provided with a part.

  Therefore, according to the jaw pulling and fixing device of the present invention, the head portion to be mounted on the user's head is constituted by the belt ring and the mounting holding portion. Here, the band ring is equivalent to a circle belt in the above-described conventional jaw pulling and fixing device, and is mounted so as to be wound around the user's head circumference like "Hachimaki". is there. And the band ring can be adjusted arbitrarily within a predetermined range according to the size of the user's head circumference, and the head circumference and the band inner surface of the band ring can be strengthened. A tight wearing state is ensured by the close contact. Furthermore, it is possible to suppress the belt ring body from being displaced in the vertical direction by the mounting holding portion that is in close contact with the top of the head. In addition, as a material used for the band ring, a leather material used for a retractor of a conventional jaw pulling and fixing device can be used. Thereby, it can deform | transform flexibly along a head periphery part, a belt | band | zone inner surface can be stuck to a head, and a plate support part can be supported by sufficient intensity | strength which resists the tractive force of an elastic part. Thereby, it becomes possible to form the jaw pulling and fixing device of the present invention with a relatively simple configuration, and the manufacturing cost and the like can be suppressed.

  Further, the jaw pulling and fixing device according to the present invention has the above-described structure, in which “the rotating plate is pivotally supported by the rotating support shaft and protrudes from a substantially front side to a substantially upper side of the user. It comprises a first plate on the hand side and a second plate on the long side that is bent substantially orthogonally downward from one end of the first plate, and has a substantially L-shape ”. It doesn't matter.

  Therefore, according to the jaw pulling and fixing device of the present invention, the rotating plate is configured to have a substantially L shape from the two configurations. Here, the first plate pivotally supported via the plate support portion and the rotation support shaft is directed from the head side portion of the user wearing the jaw pulling and fixing device of the present invention to the front face portion (frontal head portion). And can be positioned to protrude. On the other hand, the second plate that is bent from one end of the first plate is mainly directed to the lower part of the user's face (in the lower jaw). For this reason, the crossing portion where the first plate and the second plate cross each other is located on the front side of the user's ear and at a position sufficiently separated from the ear. Therefore, even when the rotating plate is rotated with respect to the plate support portion or when the jaw pulling and fixing device of the present invention is worn at bedtime and corrective treatment is performed, a part of the rotating plate is part of the ear portion. There is no problem of contacting with or obstructing rotation. In addition, as described above, for the patient in the case where the fixing bolt protrudes from the jaw, the possibility of interference with the bolt is reduced, and the wearability of the jaw traction fixing device of the present invention is further improved. Become.

  Further, the jaw pulling and fixing device according to the present invention has, in addition to the above-described configuration, “a rotation support shaft for changing an installation position of the rotation support shaft that pivotally supports the plate support portion and the rotation plate. It may be provided with “changing means”.

  Therefore, according to the jaw pulling and fixing device of the present invention, it is possible to arbitrarily change the installation position of the rotation support shaft for pivotally supporting the rotation plate with respect to the plate support portion. . Thereby, it becomes possible to set the pulling direction and pulling force of the lower jaw part in more detail. As a specific example of the rotation support shaft changing means, a plurality of through holes are provided in each of the plate support portion and the rotation plate, and one rotation hole selected from the plate support portion and the rotation plate are provided. And a plate support portion and a rotating plate that are screwed together with a bolt and a nut having a bolt shaft that can be inserted into the two through holes. In addition, a member such as a washer is inserted between the bolt and nut and the plate support portion and the rotation plate so that the rotation of the rotation plate relative to the plate support portion is not hindered by screwing with the bolt and nut. Is preferred. As a result, the rotation support shaft can be set at an arbitrary position of the plate support portion.

  As an effect of the present invention, it is possible to arbitrarily set the installation position of the rotation support shaft that rotates the rotation plate relative to the plate support shaft and supports the rotation plate. Thereby, the pulling direction of the lower jaw part by the chin cap and the strength of the pulling force can be adjusted more finely than the conventional one. As a result, the effects of orthodontic treatment and jaw trauma treatment can be improved. Furthermore, by rotating the rotating plate, the rotating plate or the elastic portion can be sufficiently separated from the ear portion or the fixing bolt that has conventionally been likely to interfere with the side belt or rubber band during towing. Therefore, it is possible to maintain good wearability when worn. Therefore, it can also be used as a fixing device attached outside the jaw after a surgical procedure other than orthodontic treatment.

  Hereinafter, a jaw pulling and fixing device 1 according to an embodiment of the present invention will be described with reference to FIGS. 1 to 4. Here, FIG. 1 is a plan view showing the configuration of the chin traction fixation device 1 of the present embodiment, FIG. 2 is a side view showing the configuration of the chin traction fixation device 1, and FIG. FIG. 4 is a side view showing a turning state of the turning plate 3, and FIG. 4 is an explanatory view showing an example of attachment of the chin traction fixing device 1. Here, the jaw pulling and fixing device 1 of the present embodiment is exemplified for a device used for suppressing and fixing the movement of the affected area after the surgical treatment of the patient 4 having a jaw fracture.

  As shown in FIGS. 1 to 4, the chin traction and fixation device 1 according to the present embodiment includes a head unit 6 attached to the head 5 of the patient 4 and a pair of positions attached to the opposite positions of the head unit 6. It is connected to a plate support 2, a pair of L-shaped rotation plates 3 pivotally supported with respect to each plate support 2, and a rotation end 7 of the rotation plate 3. It mainly comprises a stretchable rubber band 8 and a chin cap 9 attached to one end of each of the pair of rubber bands 8. Here, the rubber band 8 corresponds to the elastic portion of the present invention.

  Further, each configuration will be described in detail. The head portion 6 is formed in an annular shape so that the belt inner surface 12 of the wide leather belt-like member 11 is brought into close contact with the head peripheral portion 10 of the patient 4, and a plurality of strings are formed. Hexagonal shape formed with a band ring body 14 with a through hole 13 for use and a plate-like member that comes into contact with the top 15 of the patient 4 when worn, and with a plurality of second string through holes 16 formed therein. One string body 17b inserted so as to bridge between the support plate 17a, the string through hole 13 of the belt ring body 14, and the second string through hole 16 of the support plate 17a, and one of the string bodies 17b It is mainly comprised by the attachment holding | maintenance part 18 which consists of the latching | locking part 17c for adjusting the length of the string body 17b and attaching the support plate 17a and the string body 17b to the head top part 15 closely. . Here, the ring diameter of the band ring 14 is formed so as to be arbitrarily adjustable according to the size of the head periphery 10 of each patient 4 (not shown).

  On the other hand, the plate support portion 2 corresponds to the positions of both outer side surfaces of the band ring body 14, more specifically, the left side surface and the right side surface side of the patient 4 in the state where the chin traction fixation device 1 of the present embodiment is mounted. It is attached to the position by a resin fixture 14a. Here, the plate support portion 2 is constituted by a long metal plate-like member, and is attached so that the longitudinal direction thereof is along a substantially horizontal direction connecting the frontal head 19 and the back head 20 of the patient 4. . Here, a plurality of through holes 21 a are formed in the plate support portion 2 along the upper edge. And the rotation support shaft 24 comprised with a volt | bolt and a nut is attached to any one of this through-hole 21a. Here, the position of the through hole 21a to which the rotation support shaft 24 is attached corresponds to the installation position in the present invention. The fixing hole 2a through which the fixture 14a for fixing the plate support portion 2 to the belt ring 14 is inserted is formed in an oval shape, and the mounting position of the plate support portion 2 with respect to the belt ring 14 is determined in the front-rear direction. It is possible to make fine adjustments.

  The rotating plate 3 includes a first plate 25 on the short side that is supported by a rotating support shaft 24 that protrudes laterally from the plate support portion 2, and a substantially orthogonal direction from one end of the first plate 25. And a second plate 26 on the long side formed so as to be bent in a substantially L shape. Here, the rotation plate 3 is formed of a metal material in the same manner as the plate support portion 2 described above. Further, the rotation plate 3 and the rotation support shaft 24 are connected to any one of the plurality of through holes 21b provided in the first plate 25 as in the case of the plate support portion 2 described above. This is done by attaching the support shaft 24. Therefore, the installation position of the rotation support shaft 24 can be arbitrarily changed by a combination of the through hole 21 a of the plate support portion 2 and the through hole 21 b of the rotation plate 3. Thereby, it becomes possible to arbitrarily adjust the pulling direction and pulling force of the lower jaw 22. Here, the through hole 21a of the plate support portion 2 and the through hole 21b of the rotation plate 3 correspond to the rotation support shaft changing means in the present invention.

  Further, the rotating end portion 7 of the second plate 26 is slightly bent with respect to the longitudinal direction of the second plate 26. More specifically, the bending direction of the rotating end portion 7 is slightly bent toward the ear portion 28 side of the patient 4 when the patient 4 wears the jaw pulling and fixing device 1 of the present embodiment. It is a thing. The rotating end 7 is provided with a connecting hole 29 for connecting and connecting one end of a rubber band 8 described later. In addition, it has the connection auxiliary | assistant part 23 and the auxiliary | assistant hole part 23a which were provided in convex shape in a part of 1st plate 25 of the rotation plate 3. As shown in FIG. When the rubber band 8 is attached to the connecting hole 29, the auxiliary hole 23 a has a length between the chin cap 9 and the rotating end portion 7 and sufficient traction force cannot be obtained by the rubber band 8. It is used when a stronger traction force is to be obtained using the elastic restoring force of the rubber band 8 by connecting one end of the rubber band 8 to the auxiliary hole 23a.

  The elastic rubber bands 8 are respectively attached to the connecting holes 29 of the rotating plates 3, and the other end of the rubber band 8 is connected to the metal chin cap 9. Thereby, the state which connected so that it might span between the rotation end parts 7 of the rotation plate 3 by the structure of a pair of rubber band 8 and the chin cap 9 was created. The chin cap 9 supports the lower jaw portion 22 of the patient 4 from below at the time of wearing and applies a traction force from the back head 20 of the patient 4 toward the crown 15 and directly contacts the lower jaw portion 22. It is what is done. Therefore, in order to give pain and the like when wearing, and to prevent the patient 4 from feeling uncomfortable wearing, it is formed in a cup shape made of a metal material curved in a concave shape in accordance with the shape of the lower jaw portion 22 in advance. Has been.

  Next, an example of use of the chin traction and fixation device 1 of the present embodiment will be described. First, the head part 6 of the chin traction and fixation device 1 of the present embodiment is attached to the head 5 and attached to the patient 4. More specifically, the ring diameter is adjusted and attached so that the band inner surface 12 of the band-shaped member 11 constituting the band ring body 14 is brought into close contact with the outer peripheral surface of the head peripheral part 10 of the patient 4. Then, by pulling the string body 17b of the mounting holding part 18 upward, the support plate 17a through which the string body 17b is inserted is pushed down so as to be close to the vicinity of the top 15 so as to bind the purse string. At this time, since the locking portion 17c is attached in the middle of the string body 17b, it is possible to maintain a close contact state of the support plate 17a with respect to the head top portion 15. As a result, the mounting ring 18 can hold the state in which the band ring 14 is mounted on the head 5 of the patient 4. At this time, one of the plurality of through-holes 21a drilled in the plate support portion 2 and one of the plurality of through-holes 21b drilled in the rotating plate 3 are selected, and the through-hole 21a is selected. , 21b is formed with a rotation support shaft 24 composed of bolts or the like. As a result, the rotation plate 3 can be displaced so as to be rotatable with respect to the plate support portion 2, and an axial point for supporting the rotation can be arbitrarily set.

  Then, the rubber band 8 and the chin cap 9 connected to the rotating end portion 7 of the rotating plate 3 are pulled by hand and extended. At this time, since it is formed so as to be rotatable with respect to the plate support portion 3, it moves to the rotation plate 3 so as to follow such an operation. Then, such extension is continued, and the chin cap 9 is moved to a position where the chin cap 9 contacts the lower jaw 22 of the patient 4. Thereafter, the pulling force of the chin cap 9 is relaxed so that the concave curved portion of the chin cap 9 abuts the lower jaw portion 22 slowly. Then, by completely releasing the hand holding the chin cap 9, the elastic force of the rubber band 8 causes the restoring force to return to the original length acts as a traction force that pulls the lower jaw portion 22.

  As a result, it is possible to attach the chin traction fixing device 1 of the present embodiment with appropriate traction direction and traction force. In the present embodiment, the pulling direction is set in the direction from the occipital region 20 to the crown 15 of the patient 4 (see arrow F in FIG. 4).

  As described above, according to the jaw pulling and fixing device 1 of the present embodiment, the rotating plate 3 connected to the rubber band 8 is pivotally supported with respect to the plate support portion 2 so as to be rotatable within a predetermined range. ing. As a result, the traction direction and traction force of the lower jaw portion 22 by the chin cap 9 connected to the rubber band 8 can be arbitrarily adjusted. In addition, the installation position of the rotation support shaft 24 can be arbitrarily changed, and the above-described traction direction and traction force can be adjusted in more detail. As a result, unnecessary pain is not given to the patient 4 and use for a long period of time is not hindered.

  Further, as shown in FIGS. 3 and 4, the rotating plate 3 is formed in a substantially L shape by the first plate 25 and the second plate 26. In particular, the first plate 25 on the short side is pivotally supported so as to protrude forward with respect to the rotation support shaft 24, and the second plate 26 is substantially downward from one end of the first plate 25. It is formed by bending in the orthogonal direction. As a result, even when the rubber band 8 is attached to the rotating end 7 at one end of the second plate 26, the second plate 26 and the rubber band 8 do not contact the ear portion 28 of the patient 4. Thereby, the mounting property of the jaw traction fixing device 1 of the present embodiment is not impaired. Furthermore, according to the jaw pulling and fixing device 1 of the present embodiment, the rotation plate 3 is formed in a substantially L shape, thereby preventing interference with the ear portion 28 and eliminating interference with the position directly below the ear portion 28. Therefore, as illustrated in FIG. 4, even when a chin fixing bolt 30 for fixing a temporomandibular joint or the like is embedded in the jawbone immediately below the ear portion 28, the present embodiment is implemented by the shape exhibiting this L shape. The rubber band 8 or the like does not come into contact with the chin fixing bolt 30 when the chin traction fixing device 1 is mounted. Therefore, the wearability of the chin traction fixing device 1 can be further improved.

  The present invention has been described with reference to preferred embodiments. However, the present invention is not limited to these embodiments, and various modifications can be made without departing from the spirit of the present invention as described below. And design changes are possible.

  That is, in the jaw pulling and fixing device 1 of the present embodiment, as shown in FIG. 1 and the like, the configuration using the head portion 6 having the band ring 14 is shown, but the present invention is not limited to this. Any plate can be used as long as it can fix the plate support 2 and reliably support the rotation of the rotation plate 3. That is, even a hat-shaped member used in a conventional retractor can be applied. Furthermore, in the chin traction fixing device 1 of the present embodiment, the one using the substantially L-shaped rotation plate 3 is shown, but is not limited thereto, and the traction direction and the traction force can be adjusted. And what is necessary is just a thing without interference with the ear | edge part 28 grade | etc.,.

  In addition, in the present embodiment, an example of fixing an affected part after a surgical procedure has been illustrated. However, as used in a conventional jaw traction fixation device, the present invention can be used for correction treatment of malocclusion such as a mandibular frontal protrusion. Of course, it is also possible to use a jaw pulling and fixing device. Moreover, although what comprised the structure of the rotation support shaft 24 with a volt | bolt etc. was shown, it is not limited to this, The rotation plate 3 is pivotally supported with respect to the plate support part 2 so that rotation is possible. It doesn't matter as long as it can.

It is a top view which shows the structure of a chin traction fixing device. It is a side view which shows the structure of a chin traction fixing device. It is a side view which shows the state of the rotational displacement of a chin traction fixing device. It is explanatory drawing which shows an example of mounting | wearing of a chin traction fixing device. It is explanatory drawing which shows an example of the conventional jaw traction fixing device.

Explanation of symbols

1 Jaw pulling and fixing device 2 Plate support part 3 Rotating plate 4 Patient (user)
5 Head 6 Head 7 Rotating End 8 Rubber Band (Elastic)
DESCRIPTION OF SYMBOLS 9 Chin cap 10 Head circumference part 11 Band-shaped member 12 Band inner surface 14 Band ring body 18 Attaching holding | maintenance part 21a, 21b Through-hole (rotation support shaft change means)
22 Lower jaw 24 Rotation support shaft 25 First plate 26 Second plate

Claims (4)

A head portion mounted on the user's head;
A pair of plate support portions respectively installed at positions facing each other of the head portion;
A pivot support shaft installed on the plate support;
A pivot plate pivotally supported by the plate support portion via the pivot support shaft;
According to the shape of the lower jaw of the user,
And an elastic part that spans and connects between the rotation end of the rotation plate and the chin cap and pulls the lower jaw of the user toward the back of the head by elastic expansion and contraction. Jaw traction fixation device. The head portion is
A ring-shaped body that is attached to the head in a state in which a wide band-shaped member is formed in an annular shape, and the band inner surface of the band-shaped member is in close contact with the user's head circumference,
2. The mounting ring according to claim 1, further comprising: a mounting holding part that is attached to the band ring and substantially covers the vicinity of the top of the user and holds the mounting state of the band ring. Jaw traction fixation device. The rotating plate is
A first plate on the short side that is pivotally supported by the rotation support shaft and protrudes between approximately the front and substantially upward of the user;
A second plate on the long side bent substantially orthogonally from one end of the first plate downward,
The jaw pulling and fixing device according to claim 1, wherein the jaw pulling and fixing device is configured to have a substantially L shape.   The rotation support shaft changing means for changing the installation position of the rotation support shaft that pivotally supports the plate support portion and the rotation plate. The jaw pulling and fixing device according to any one of 3 above.

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