JP5793757B2 - Cervical spine - Google Patents

Description

  The present invention relates to a cervical spine, and more particularly to a cervical spine in which the support height of the jaw can be adjusted.

Conventionally, the cervical spine has been developed to correct the posture of the spine to the neutral state, and the cervical spine has a unique size or small size according to the patient's individual body specs (such as the position of the jaw). An adjustable configuration is required.
It would be very expensive to prepare an orthosis tailored to the individual patient's body, and recently, the development of a cervical spine with a function that can adjust the support position of the jaw has been proposed. Yes.

As a conventional technique of the cervical spine that can adjust the height of the jaw, for example, the following documents can be cited.
JP-A-7-250854 JP2000-14686A Special table 2009-502326

  In the said patent document 1, it is comprised so that a chin rest part can be tilted and a height can be adjusted by providing a turnbuckle type adjustment support rod. Further, Patent Document 2 also makes it possible to adjust the height of the lower jaw receiver. Furthermore, Patent Document 3 is to enable the height of the left and right jaw support members to be adjusted by a single operation. For this purpose, a rack and pinion type adjustment mechanism is provided, and the pinion is rotated to Thus, the chin support member can be moved to adjust the chin support height.

  However, in such a prior art, for example, Patent Document 1, since the turnbuckle type adjusting means is used, the rod-shaped buckle has to be rotated around the vertical axis, and the operation is difficult. Even if it is rotated once, only one pitch of the screw can be displaced in length, and in order to displace several centimeters necessary for adjusting the height of the cervical vertebra, many rotation operations are required, which is very inconvenient.

  In addition, when using a rack and a pinion as in Patent Document 3, it is preferable that it can be operated with a single rotary operation tool, but the rack must be engraved on a long object (straight or curved). Since it is costly to manufacture and basically meshes with the gears, the position that can be fixed is displaced by one pitch, and it is not fixed at an intermediate position below one pitch, and a stepless displacement operation is performed. It is difficult, and if the gear pitch is reduced to obtain a stepless displacement, the work becomes difficult and the cost increases.

  Therefore, the present inventors have provided a simple cam operation mechanism and an action conversion mechanism, and thus the height adjustment of the jaw support member in the cervical spine orthosis can be adjusted steplessly by a simple rotation operation. A brace was proposed in Japanese Patent Application No. 2010-175777.

  The above-described improved invention made by the present inventors was excellent in that the height of the cervical orthosis jaws could be adjusted with a simple operability that was not possible with the prior art. However, the configuration for obtaining the simple operability is still complicated, the production cost is high, and it is difficult to say that the frequency of troubles due to the complicated structure is low, and further improvement is required. It was to be done.

  In view of such problems, an object of the present invention is to provide a cervical spine that has a simple structure and can adjust the jaw position with good operability.

In order to achieve the above object, the cervical spine according to the present invention is a cervical spine that is attached to the neck and the height of the jaw placement member (4) can be adjusted.
A support body (1) having a substantially U shape in plan view so as to surround the neck from the front side;
It is made of a synthetic resin material having elasticity, is located inside the support body (1), and its one end is rotated by pivot pins (8) and (8) in the vicinity of its left and right rear ends, respectively. A pair of left and right jaw support members (2), (3), which are pivotally attached,
The jaw support member (2), and (3) the front end (2A), (3A) provided on the jaw placement member (4),
At least one side portion of the support body (1) is provided with an arc-shaped adjustment locking hole (6) in the vertical direction and centering on the pivot pin (8), and the adjustment locking hole (6) is formed with a plurality of steps (6A),
An engagement member (9) provided with an engagement protrusion (5) engageable with the plurality of step portions (6A) on at least one of the pair of left and right jaw support members (2), (3) is a tongue-like shape. The engagement member (9) is always urged toward the support body (1) by the elasticity of the jaw support member (2) and is engaged with the adjustment locking hole (6). Configured to match
A release mechanism (7) for releasing the elastic engagement of the engagement member (9) with respect to the adjustment locking hole (6) is provided.
It is characterized by that.

The cervical spine according to the present invention is a device for cervical vertebrae that is mounted on the neck of a human body, supports the jaw at an appropriate height, and corrects and maintains the spine in the correct posture (arranged state). The type of trouble (cause or purpose of treatment) is not a problem.
In addition, the above-described cut-out molding of the engaging member (9) means that a part of the chin support member is used in the form of a tongue, and in the embodiment, a cut is formed during the molding process. A cut may be added later. In addition, the configuration in which the engaging member (9) is always urged toward the support body (1) causes the tongue-like engaging member (9) to be plastically deformed so that an urging state appears. However, it may be completed by adding a step of eliminating plastic deformation after being displaced by a predetermined amount by heat application.

According to the cervical spine according to the present invention, a plurality of steps are formed on the support body side to form an adjustment locking hole, and on the other hand, an engagement member provided with an engagement protrusion is provided by cutting out the jaw support member, By utilizing the elasticity of the synthetic resin of the chin support member, it is possible to release the engaged state with the support body and easily adjust the rotation to a desired height position. The height adjustment of the support member can be adjusted with a simple operation, and an excellent height adjustment function can be exhibited while being manufactured at low cost.
Other effects according to the present invention will be apparent from the following description of examples.

In the present invention, the adjustment locking holes (6) in which the plurality of steps (6A) are formed are similarly provided on both sides of the support body (1), and can be engaged with the plurality of steps (6A). It is preferable that the engaging protrusions (5) are similarly provided on both the pair of left and right jaw support members (2) and (3).
Thus, by adjusting the height of the pair of left and right jaw support members (2) and (3), the positions of the adjusted pair of left and right jaw support members (2) and (3) are adjusted. It can be fixed stably.

Further, the pair of left and right jaw support members (2) and (3) are provided on the side of the pivot pins (8) and (8) with respect to the engagement member (9). , (8) and arcuate rear guide holes (10), (10) are formed, and guide pins (11), (11) are inserted into the guide holes (10), and Arc-shaped front guide holes (12), (12) centered on the pivot pins (8), (8) are formed in front of the adjustment locking holes (6) of the support body (1). In addition, it is preferable that guide pins (13) and (13) are inserted into the guide holes (12) and (12).
Thereby, the rotational displacement of the pair of left and right jaw support members (2) and (3) can be performed smoothly.

Alternatively, groove-shaped guide portions (14) and (14) for guiding the front portions of the pair of left and right jaw support members (2) and (3) are formed at positions near the front portion of the support body (1). It is preferable that the pair of left and right jaw support members (2) and (3) is configured to guide and support the pivoting about the pivot pins (8) and (8).
Even in such a configuration, the rotational displacement of the pair of left and right jaw support members (2) and (3) can be performed smoothly.

The release mechanism (7) is provided on the engagement member (9) and is positioned outside the support body (1) and the holding member (9A) inserted through the adjustment locking hole (6). is, a knob for rotating operation to be screwed to said holding member (9A) (9B), the pivoting operation knob (9B) through a stop pin which fits into the holding member (9A) (9C) The engagement member (9) can be elastically deformed by one-way rotation of the rotation operation knob (9B), and the plurality of steps (6A) of the engagement protrusion (5) The engagement is temporarily released, and the engagement member (9) can be elastically restored by rotating in the other direction so that the engagement protrusion (5) is engaged with the plurality of steps (6A). It is preferable that With this configuration, the engagement and release of the plurality of steps (6A) with respect to the adjustment locking hole (6) can be performed by a simple turning operation of the turning operation knob (9B).

The front view of the cervical vertebra orthosis concerning this invention. 1 is a side view of a cervical spine orthosis according to the present invention. The exploded view of the principal part of the cervical vertebra orthosis concerning this invention. The expanded vertical side view of the principal part which shows the action state of the cervical spine orthosis concerning this invention. The expanded vertical side view of the principal part which shows the action state of the cervical spine orthosis concerning this invention. The side view of the principal part which shows one action state of the cervical spine orthosis concerning this invention. The side view of the principal part which shows one action state of the cervical spine orthosis concerning this invention. The whole perspective view which shows another aspect of the cervical spine orthosis concerning this invention. FIG. 9 is a cross-sectional view taken along the line AA of FIG. 8 showing another embodiment of the cervical spine according to the present invention.

A preferred embodiment of a cervical spine according to the present invention will be described in detail below with reference to the drawings.
FIG. 1 is a front view of the entire cervical spine orthosis, FIG. 2 is a side view thereof, and FIG. 3 is an exploded view of a main part.
As shown in FIGS. 1 to 3, this cervical vertebra is a cervical vertebra that is attached to the cervix and the height of the chin rest member 4 is adjustable, and is flat so as to surround the cervical from the front side. A support body 1 having a substantially U-shape and a synthetic resin material having elasticity, here, formed using polyacetal, located inside the support body 1 and in the vicinity of its left and right rear ends, A pair of left and right jaw support members 2, 3 having one end portion pivotally supported by pivot pins 8, 8 (consisting of a pin side and a receiving portion side), and the jaw support member 2 , 3 and the front end portions 2A, 3A of the chin, 3 is provided with a plate-like jaw mounting member 4 that is connected by connecting pins 15, 15 so as to connect them.

  Further, on both side portions of the support body 1, arc-shaped adjustment locking holes 6 and 6 centering on the pivot pins 8 and 8 are provided in the vertical direction and the adjustment locking holes 6 and 6 are provided. 6 has a plurality of step portions 6A, 6A, here, four step portions are formed to face the opposite side of the inner periphery of the adjustment locking hole 6, and four steps of height adjustment (here, the total height is about 45 mm) Is performed in four stages). Then, engaging members 9 and 9 having engaging projections 5 and 5 with which the plurality of stepped portions 6A and 6A can engage are cut out in a tongue-like shape on both of the pair of left and right jaw support members 2 and 3. And the engaging members 9, 9 are always urged toward the support body 1 by the elasticity of the jaw support members 2, 3, and engage with the adjustment locking holes 6, 6. Has been. The aforementioned cut-out molding does not mean that a new cut is to be made, but merely such an expression in the sense that a part of the jaw support members 2 and 3 is used.

That is, here, the adjustment locking holes 6 in which the plurality of step portions 6A are formed are similarly provided on both side portions of the support body 1, and the engagement protrusions 5 that can be engaged with the plurality of step portions 6A are also provided on the left and right sides. It is similarly provided on both of the pair of jaw support members 2 and 3.
The main portions of the engagement protrusions 5 and 5 here are substantially rectangular parallelepiped, and are provided so as to protrude from the engagement members 9 and 9 toward the support body 1 ( From the mounted state, it protrudes in the front-rear direction), and is configured to fit into one step portion (step portions on both front and rear sides) of the plurality of step portions 6A, 6A having a rectangular shape. However, if the plurality of step portions 6A, 6A are not rectangular but triangular, round, or the like, the engagement protrusions 5, 5 may be configured in a corresponding shape to be fitted thereto.

  The tongue-like engagement members 9 and 9 have a rectangular shape in which the upper part is integrally continuous with the chin support members 2 and 3 and the lower part is in a free state. It is configured to be always urged toward the support body 1 by a few elasticity. Here, at the time of molding, the tongue piece is deformed outward (appears the engaged state), and the deformation from the position to the original position is made possible by elastic deformation (appears the disengaged state). ). However, after a predetermined amount of deformation after molding, a heating step may be added to alleviate all or part of the plastic deformation to alleviate brittleness. However, this type of cervical orthosis does not normally require such an additional step because once the height of a particular patient's body shape is adjusted, there is no need for frequent height adjustment.

Further, release mechanisms 7 and 7 for releasing the elastic engagement of the engagement member 9 with respect to the adjustment locking hole 6 are provided on the left and right, respectively.
As shown in FIGS. 4 and 5, the specific structure of the release mechanism 7 includes a holding member 9 </ b> A provided in an upright state on the engagement member 9 and inserted through the adjustment locking hole 6. A rotation operation knob 9B that is positioned outside the support body 1 and is screwed to the holding member 9A in an externally fitted state, and passes through the rotation operation knob 9B, is inserted into the holding member 9A, and is elastic. The engaging member 9 is configured to be elastically deformed by one-way rotation of the knob 9B for rotation operation. The engagement projection 5 is temporarily disengaged from the plurality of step portions 6A, and the engagement member 9 can be elastically restored by rotating in the other direction so that the engagement projection 5 is engaged with the plurality of step portions 6A. Is configured to do.

  Further, the pair of left and right jaw support members 2, 3 are arranged on the side of the pivot pins 8, 8 with respect to the engagement member 9, and are arcuate rear guides centered on the pivot pins 8, 8. Holes 10 and 10 are formed, and guide pins 11 and 11 (pin side and receiving portion side) are inserted into the guide hole 10, and in front of the adjustment locking hole 6 of the support body 1, Arc-shaped front guide holes 12, 12 centered on the pivot pins 8, 8 are formed, and guide pins 13, 13 (pin side and receiving side) are inserted into the guide holes 12, 12. Yes. The front guide holes 12 and 12 and the rear guide holes 10 and 10 are preferably as close to the adjustment locking hole 6 as possible. As a result, the engagement of the engagement protrusion 5 with the plurality of step portions 6A of the adjustment locking hole 6 is stabilized.

(Function)
The height adjustment of the chin support members 2 and 3 of the cervical spine orthosis is performed as follows. Here, for convenience, the one side chin support member 2 will be described.
When this cervical spine is not worn (always), it is in the following state. That is, the engagement protrusion 5 is fitted at an appropriate position of the plurality of step portions 6A and fixed at a predetermined height position. In this case, as shown in FIGS. 4 and 6, it may be located at the lowest position or the highest position as shown in FIG.

From this state (the lowermost position shown in FIGS. 4 and 6 is preferable), the device is first attached to the patient's neck from the front side, and the release is performed to match the height of the patient's jaw. The knob 9B for rotation operation of the mechanism 7 is rotated in one direction (here, left or counterclockwise direction), and the tightened state of the jaw support member 2 and the support body 1 is released. Next, as shown in FIG. 5, the rotating knob 9B is pressed in the direction of the arrow (neck portion side direction), and is screwed into and connected to the tongue-like engagement member 9A. The joint member 9 is elastically deformed. At this time, since the jaw support member 2 is a plate-like body, the jaw support member 2 itself is slightly deformed by the elasticity of the synthetic resin. However, since the chin support member 2 is held in position with respect to the support body 1 by the guide pins 11 and 13, slight deformation between the guide pins 11 and 13 is brought about. become.

As a result, the engagement projection 5 provided on the engagement member 9 is disengaged from the specific position of the plurality of stepped portions 6A, and the jaw support member 2 is rotated around the pivot pin 8. Allows dynamic displacement (upward movement). Note that FIG. 5 differs from FIG. 4, which is a longitudinal section as a whole, in order to show the engagement protrusion 5, with a partial cross section where the outer shape appears at a position along the tongue-like outer edge of the engagement member 9. .
Then, the jaw support member 2 is rotationally displaced upward about the pivot pin 8 to a position that fits the patient's jaw position. In this case, it can be adjusted to the maximum ascending position shown in FIG.

Thus, when the chin support member 2 is adjusted to a predetermined height position, the pressing force applied to the turning operation knob 9B is released. Then, the engagement protrusion 5 is re-engaged with the step portion at a specific position of the plurality of step portions 6A by the elastic restoring force of the material of the engagement member 9.
Thereafter, the turning operation knob 9B is rotated in the other direction (here, right or clockwise direction), and the tightened state of the chin support member 2 and the support body 1 is reproduced as shown in FIG. The adjusted height position is fixed.

(Some variations)
As shown in FIGS. 8 and 9, here, in order to obtain a smooth and stable rotational displacement of the jaw support members 2 and 3, the rear guide holes 10 and 10 and the front guide hole of the embodiment described above. Instead of 12, 12, groove-shaped guide portions 14, 14 are employed.
That is, groove-like guide portions 14 and 14 for guiding the front portions of the pair of left and right jaw support members 2 and 3 are formed at positions near the front portion of the support body 1. The pivot pins 8 are configured to guide and support the rotation about the pivot pins 8.
The groove-shaped guide portions 14 and 14 described above are formed at the time of molding the support body 1, but may be configured by being attached by adhesion and welding after the molding.
In addition, although the same number is quoted about the same member as the said Example, the description is abbreviate | omitted for convenience.

Industrial application fields

  The cervical spine according to the present invention is excellent in terms of operation and cost as a device for correcting and holding a cervical vertebra posture, and its application range is wide.

1: Support body 2: One jaw support member 2A: Front end portion of one jaw support member: The other jaw support member 3A: Front end of the other jaw support member 4: Jaw placement member 5: Engaging protrusion 6: Adjustment locking hole 6A: Multiple steps 7: Release mechanism 8: Pivoting pin 9: Engaging member 9A: Holding member 9B: Knob 10 for rotation operation: Rear guide hole 11: Guide pin (rear side)
12: Front guide hole 13: Guide pin (front side)

Claims (5)

A cervical spine that is attached to the neck and the height of the jaw placement member (4) is adjustable,
A support body (1) having a substantially U shape in plan view so as to surround the neck from the front side;
It is made of a synthetic resin material having elasticity, is located inside the support body (1), and its one end is rotated by pivot pins (8) and (8) in the vicinity of its left and right rear ends, respectively. A pair of left and right jaw support members (2), (3), which are pivotally attached,
The jaw support member (2), and (3) the front end (2A), (3A) provided on the jaw placement member (4),
At least one side portion of the support body (1) is provided with an arc-shaped adjustment locking hole (6) in the vertical direction and centering on the pivot pin (8), and the adjustment locking hole (6) is formed with a plurality of steps (6A),
An engagement member (9) provided with an engagement protrusion (5) engageable with the plurality of step portions (6A) on at least one of the pair of left and right jaw support members (2), (3) is a tongue-like shape. The engagement member (9) is always urged toward the support body (1) by the elasticity of the jaw support member (2) and is engaged with the adjustment locking hole (6). Configured to match
A release mechanism (7) for releasing the elastic engagement of the engagement member (9) with respect to the adjustment locking hole (6) is provided.
Cervical spine orthosis characterized by that.   Adjustment protrusion holes (6) formed with the plurality of step portions (6A) are similarly provided on both side portions of the support body (1), and engaging protrusions (6A) that can be engaged with the plurality of step portions (6A). The cervical orthosis according to claim 1, wherein 5) is also provided on both the pair of left and right jaw support members (2) and (3) in the same manner.   The pair of left and right jaw support members (2) and (3) are provided on the side of the pivot pins (8) and (8) with respect to the engagement member (9). 8) Arc-shaped rear guide holes (10), (10) centering on 8) are formed, and guide pins (11), (11) are inserted into the guide holes (10), and the support Arc-shaped front guide holes (12), (12) centering on the pivot pins (8), (8) are formed in front of the adjustment locking holes (6) of the main body (1). The cervical spine according to claim 2, wherein guide pins (13) and (13) are inserted through the guide holes (12) and (12).   Groove-shaped guide portions (14), (14) for guiding the front portions of the pair of left and right jaw support members (2), (3) are formed at positions in the vicinity of the front portion of the support body (1). The pair of jaw support members (2), (3) are configured to guide and support the rotation about the pivot pins (8), (8) of the pair of jaw support members (3). Cervical orthosis. The release mechanism (7) is provided on the engagement member (9) and is positioned outside the support body (1), a holding member (9A) inserted through the adjustment locking hole (6), with the rotational operation knob screwed to said holding member (9A) (9B), through the the pivoting operation knob (9B), because stop pin and (9C) to be fitted to the holding member (9A) The engagement member (9) can be elastically deformed by one-way rotation of the rotation operation knob (9B), and the engagement protrusion (5) is engaged with the plurality of steps (6A). The engagement is temporarily released and the engagement member (9) can be elastically restored by rotating in the other direction so that the engagement protrusion (5) is engaged with the plurality of steps (6A). The cervical spine according to any one of Claims 1 to 4, wherein the cervical spine is provided.

Images