KR102448599B1 - Head fastening zig for mastoid radiography - Google Patents

Abstract

The present invention provides an optimal head posture for accurately examining the mastoid by simply reclining without the need to arbitrarily adjust the tilting angle of the subject's head or the irradiation angle of the radiation generator for radiographic examination of the mastoid. Therefore, it relates to a head fixing jig that assists in performing an objective radiographic examination of the mastoid process more easily even for an examiner who is not proficient in radiography.

Description

Head fastening zig for mastoid radiography

The present invention relates to a head fixing jig for mastoid radiographs, and more particularly, to a head fixing jig capable of tilting and fixing a subject's head posture in a direction optimized for radiographic examination of the mastoid.

Anatomically, it is impossible to photograph the mastoid process located behind the pinna of the human body with conventional radiographic techniques.

Law method is also called mastoid process axiolateral oblique projection, and it is in a prone or sitting position, folds the auricle forward with tape so that it does not overlap the mastoid process, Tilt the midsagittal plane 15° toward the detector bed with the sagittal plane aligned with the center of the detector bed. This is a defined procedure to enter the radiation source by tilting the radiation generator by 15° toward the mastoid process on the test side after fixing the head.

In other words, the Law method includes the contents of performing radiographic imaging by mutually adjusting the radiation angle and head posture of the radiation generator. It is also detailed by shooting methods, etc.

All of these methods are methods to obtain an objective radiographic image of the mastoid, and they present an examination guideline for the correct diagnosis of the mastoid. If it was not controlled, severe noise was generated in the radiographic image, making it impossible to make an objective diagnosis based on the radiographic image.

That is, in the case of an examiner who is proficient in radiography, there will be no difficulty in setting the irradiation angle of the radiation generator or the subject's head posture to the optimal direction for mastoid radiographs. The shortage entails difficulties in radiography.

Patent Publication 10-2015-0014621

The present invention has been created to solve the problems in the prior art in view of the various problems in the prior art, and for the radiographic examination of the mastoid process, the subject's head tilting angle or the irradiation angle of the radiation generator does not need to be arbitrarily adjusted, and the subject simply lies down. The purpose of the present invention is to provide a head fixing jig that assists in performing an objective radiographic examination of the mastoid more easily even for an examiner who is not proficient in radiography by realizing the optimal head posture for accurately examining the mastoid process. have.

In addition, by tilting the subject's head in at least two directions at the same time, it is possible to obtain a more objective radiographic image by preventing noise due to overlapping of the mastoids on both sides even in the operation of a uniform radiation generator that irradiates the radiation source vertically on the head, Furthermore, the purpose of this is to provide a head fixing jig that can greatly increase the range of radiographic images by recording both the mastoid process and even the temporomandibular joint on both sides of the acquired radiographic image.

The present invention is a means for achieving the above object, in a head fixing jig for tilting the head in at least two directions from below the head of a subject who is reclining on the side of the head so that the midsagittal plane is parallel to the radiation bed, in the form of a triangular rod a first tilting block for first tilting the head so that the front of the subject's midsagittal plane in equilibrium with the radiation bed is tilted downward, placed between the subject's temple and the ear; And it is made in the form of a triangular rod and is jointly installed at the end of the first tilting block in a direction perpendicular to the first tilting block, placed under the temporal bone of the subject, and the left side of the median sagittal plane tilted first by the first tilting block and a second tilting block for secondary tilting the head so as to be inclined upward.

In addition, the first tilting block and the second tilting block is characterized in that the inner angle of each facing each other is set within an angle range of 15 ° to 20 °.

In addition, a rail is formed in the second tilting block along a longitudinal direction, and a guide member connected to the rail is formed in the first tilting block, so that the first tilting block can reciprocate along the longitudinal direction of the second tilting block. It is characterized in that it is composed.

In addition, the inner angles of the first and second tilting blocks facing each other may be configured to be different from each other within the angular range.

In addition, the first tilting block is segmented with a first tilting member and a second tilting member with respect to the center, and the second tilting block is segmented with a third tilting member and a fourth tilting member with respect to the center characterized.

The present invention has the following effects.

First, for the radiographic examination of the mastoid, it is not necessary to arbitrarily adjust the tilting angle of the subject's head or the irradiation angle of the radiation generator. Even in the case of an examiner who is not good at radiography, it is possible to more easily perform an objective radiographic examination of the mastoid process.

Second, by tilting the subject's head in at least two directions at the same time, it is possible to obtain a more objective radiographic image by preventing the noise caused by the overlapping of the mastoids on both sides even in the operation of a uniform radiation generator that irradiates the radiation source vertically on the head, Furthermore, in the acquired radiographic image, both the mastoid process and even the temporomandibular joint on both sides can be recorded, greatly increasing the range of use of the radiographic image.

Third, by configuring the first tilting block to be reciprocally movable in the longitudinal direction of the second tilting block, it provides the effect of flexibly adjusting the subject's head posture in accordance with the purpose of shooting, the main observation site, and the like.

Fourth, by increasing the coupling force between the first and second tilting members in which the first and second fasteners are segmented into two pairs, the first tilting block and the second tilting block are Provides the effect of preventing blocks from being randomly separated by the weight of the head.

1 to 2 are diagrams for specifying the direction reference of this embodiment based on the midsagittal plane of the subject who is lying on the side of the radiation detector bed.
Figure 3 is a view showing the state of use of the head fixing jig for mastoid radiographs according to the present invention.
4 is a view showing a state viewed in the X direction shown in FIG. 3 .
FIG. 5 is a view showing a state when viewed from the Z direction shown in FIG. 3 .
FIG. 6 is a view showing a state viewed from the Y direction shown in FIG. 3 .
7 to 8 are diagrams conceptually illustrating that a radiation source is projected onto an examination area.
9 is a view showing a cross-sectional shape of a first tilting block and a second tilting block.
10 is a view showing an exploded configuration of the first tilting block and the second tilting block according to the embodiment to which the guide member and the rail are applied.
11 is a view showing an embodiment of a first tilting block and a second tilting block;
Fig. 12 is a view for explaining the operation of the embodiment shown in Fig. 11;
13 is a view showing an embodiment of a first tilting block and a second tilting block;
14 is a view showing the anatomical structure of the mastoid process.

In order to fully understand the present invention, preferred embodiments of the present invention will be described with reference to the accompanying drawings. Embodiments of the present invention may be modified in various forms, and the scope of the present invention should not be construed as being limited to the embodiments described in detail below. This example is provided to more completely explain the present invention to those of ordinary skill in the art. Accordingly, the shape of elements in the drawings may be exaggerated to emphasize a clearer description. It should be noted that the same members in each drawing are sometimes shown with the same reference numerals. Detailed descriptions of well-known functions and configurations determined to unnecessarily obscure the gist of the present invention will be omitted.

1 to 2 are views for specifying the direction reference of this embodiment based on the midsagittal plane of the subject who is lying on the side of the radiation detector bed, and FIG. 3 is a state of use of the head fixing jig for mastoid radiographs according to the present invention FIG. 4 is a view showing a state viewed from the X direction shown in FIG. 3 , FIG. 5 is a view showing a state viewed from the Z direction shown in FIG. 3 , and FIG. 6 is the Y shown in FIG. It is a view showing a state viewed from the direction, FIGS. 7 to 8 are conceptual views projected on a radiation source, FIG. 9 is a view showing a cross-sectional shape of the first tilting block and the second tilting block, and FIG. 10 is a guide It is a view showing the disassembled configuration of the first tilting block and the second tilting block according to the embodiment to which the member and the rail are applied, and FIG. 11 is a view showing an embodiment of the first tilting block and the second tilting block, and FIG. 12 is 11 is a diagram for explaining the operation of the embodiment shown in FIG. 11 and FIG. 13 is a diagram illustrating an embodiment of the first tilting block and the second tilting block.

Prior to the description of the invention, if a non-strict direction reference is specified with reference to FIG. 1 for convenience, the z-direction shown in FIG. 1 is specified as the front-back direction, the y-direction is the up-down direction, and the x-direction is specified as the left-right direction, The direction in which the head is tilted by the head fixing jig for mastoid radiographs (hereinafter referred to as fixing jig) according to the present invention will be described according to the direction criteria described above.

For example, as shown in FIG. 1, when the subject's midsagittal plane (MSP) lies on the side of the head so that it is parallel to the detector bed (B), the upper part of the actual midsagittal plane (MSP) is left based on the attached drawing , the lower part can be specified as a direction reference, respectively, to the right. And, as shown in Fig. 2a, when the front of the subject's face is inclined toward the detector bed (B) direction (arrow direction), the front of the subject's midsagittal plane (MSP) is in a downwardly inclined state, as shown in Fig. 2b As described above, when the head side of the subject is inclined toward the opposite direction (arrow direction) of the detector bed B, the left side of the midsagittal plane MSP of the subject is inclined upward.

Hereinafter, a fixing jig according to the present invention will be described with reference to the above-described direction reference.

The fixing jig according to the present invention functions to tilt the head in at least two directions below the head of the subject who is reclining on the side of the head so that the midsagittal plane (MSP) is parallel to the detector bed (B) as shown in FIG. 3 . .

That is, the fixing jig according to the present invention can implement an optimal head posture for accurately examining the mastoid process of the subject by tilting the subject's head in two directions at the same time.

More specifically, the fixing jig according to the present invention is largely made in the form of a triangular rod, and is placed between the temple and the ear of the subject and the front of the subject's midsagittal plane (MSP) in equilibrium with the detector bed (B) is downward It is made in the form of a first tilting block 10 and a triangular bar for first tilting the head so as to be inclined, and a joint is installed at the end of the first tilting block 10 in a direction orthogonal to the first tilting block 10, and the examinee It may be defined as including a second tilting block 20 that is placed under the temporal bone of have.

The first tilting block 10 and the first tilting block 10 are adjacent to each other in a 'T' shape, and support the subject's head to tilt the subject's head in at least two directions at the same time.

The first tilting block 10 and the second tilting block 20 may have the same triangular cross-section, and in this case, the inner angle θ of the slopes facing each other is set within an angle range of 15° to 20°. It is preferable to be

For example, the cross-section of the first tilting block 10 and the second tilting block 20 may be exemplified in the form of an isosceles triangle. 20°) can be set.

That is, the subject's head can be tilted at a certain angle by the slope of the first tilting block 10 and the second tilting block 20. At this time, the tilted head posture of the subject is mastoid radiographic examination using the Law method. The required head posture is satisfied.

During radiographic examination, the fixing jig according to the present invention is placed on the detector bed (B), and when the subject leans against the fixed jig mounted on the detector bed (B), the subject's head side is in contact with the fixing jig and the head posture is fixed can be At this time, the head of the subject is tilted at the same time by the first tilting block 10 and the second tilting block 20, and when the posture taken in this way is maintained, the radiographic examination is started.

When the subject's head is leaned on the first tilting block 10, the first tilting block 10 tilts the head so that the front of the subject's midsagittal plane (MSP) is inclined downward. In this way, as shown in FIG. 4 , a head posture is provided in which the head of the subject is inclined toward the detector bed (B) and the occipital side rises upward.

At the same time, when the subject's head is leaned on the second tilting block 20, the second tilting block 20 tilts the head so that the left side of the subject's midsagittal plane (MSP) is inclined upward. In this case, as shown in FIG. 5 , a head posture is provided in which the parietal side of the subject rises upward, and the mandible side is inclined in the direction toward the detector bed (B).

Although the above description has been described as a process in which the subject's head posture is tilted step by step by the first tilting block 10 and the second tilting block 20, the first tilting block 10 and the second tilting block 20 The subject's head can be tilted in two directions at the same time by a simultaneous and complex action on the subject's head.

In this way, when the subject's head posture is taken, there is no need to adjust the irradiation angle of the separate radiation generator (R), and even if the radiation source is irradiated vertically from directly above the subject's head supported by a fixed jig, the mastoids on both sides in a single plane can be projected simultaneously.

For example, when the radiation source is irradiated vertically from the upper part of the head tilted at a certain angle by the fixing jig (shown by the two-dot chain line) as shown in FIG. Since the regions Z2 and the like do not vertically overlap each other and can all be projected to the radiation source, all of them can be recorded on the radiographic image.

However, as shown in FIG. 8, when the subject's midsagittal plane (MSP) is parallel to the detector bed (B) and the radiation source is vertically irradiated with the head reclining only on the detector bed (B), the radiation source is positive Because they are continuously projected on the lateral mastoid region (Z1) or on both sides of the temporomandibular joint region (Z2), it causes noise in the radiographic image. The projection direction of the radiation source is shown by the dashed line.)

Therefore, in the past, the mastoid radiographic examination was conducted by arbitrarily adjusting the subject's head posture and at the same time adjusting the irradiation angle of the radiation generator (R) based on the Law method.

Therefore, when using the fixing jig according to the present invention, the examinee does not need to arbitrarily adjust the subject's head posture or the irradiation angle of the radiation generator (R), and the subject's head posture can be adjusted to the radiographic examination of the mastoid by simply lying down. It can be tilted to an optimized posture, and accordingly, even in the operation of the uniform radiation generator (R) that irradiates the radiation source vertically on the head, it is possible to obtain a more objective radiographic image by preventing noise due to the overlap of the mastoids on both sides. Furthermore, in the acquired radiographic image, both the mastoid process and even the temporomandibular joint on both sides can be recorded, greatly increasing the range of use of the radiographic image.

On the other hand, as shown in FIG. 10 , a rail 21 is formed in the second tilting block 20 along the longitudinal direction, and the guide member 11 connected to the rail 21 is provided in the first tilting block 10 . is formed so that the first tilting block 10 can be configured to reciprocate along the longitudinal direction of the second tilting block 20 .

Since the size of the head and the position of the mastoid process show minute differences from each other for each person, the first tilting block 10 is configured to be reciprocally moved in the longitudinal direction of the second tilting block 20 to compensate for such minute differences. Thus, it is configured to take the optimal head posture for each subject. In addition, if the position of the head reclining on the fixing jig is not placed directly below the radiation generator (R), simply moving the first tilting block 10 in a straight line without moving the fixing jig as a whole position can be finely adjusted.

The guide member 11 may be exemplified as a protrusion such as a 'T' shape or a dovetail type, and the rail 21 may be exemplified as a complementary long groove shape.

The rail 21 may be recessed to a certain depth at the connecting edge point of the slope and the bottom, and the guide member 11 may be formed to protrude from one side of the first tilting block 10 except for the slope and the bottom.

On the other hand, as shown in FIG. 11 , the inner angles θ 1 , θ 2 of each of the slopes facing each other in the first tilting block 10 and the second tilting block 20 are different from each other within the angle range. can be

For example, an interior angle θ 1 of one side of the first tilting block 10 may be 15°, and an interior angle θ 2 of the other side facing it may be configured as 20°. The second tilting block 20 may also have two interior angles determined in the same manner. In this case, the cross-sections of the first tilting block 10 and the second tilting block 20 may be in the form of an isosceles triangle.

In addition, the first tilting block 10 is segmented into a first tilting member 10a and a second tilting member 10b with respect to the center, and the second tilting block 20 includes a third tilting with respect to the center. The member 20a and the fourth tilting member 20b may be segmented.

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In addition, as shown in FIG. 13 , a first fitting groove 12 may be recessed to a predetermined depth in the surfaces adjacent to each of the first tilting member 10a and the second tilting member 10b. A second fitting groove 22 may be recessed to a predetermined depth on the surfaces adjacent to each other of the third tilting member 20a and the fourth tilting member 20b. In addition, the first fitting groove 12 and the second fitting groove 22 have a first fastener 13 and a second fitting for fastening the first tilting block 10 and the second tilting block 20 segmented to each other. 2 fasteners 23 may be fitted respectively.

That is, the first fastener 13 is a means for coupling the first tilting member 10a and the second tilting member 10b between them, and the second fastener 23 includes the third tilting member 20a and the second tilting member 10b. 4 It can be understood as a means for coupling the tilting member (20b) between the two.

Accordingly, even if the subject lies on the fixed jig composed of the first tilting block 10 and the second tilting block 20 segmented from each other, the first tilting block 10 and the second tilting block 20 move the head It can be prevented from arbitrarily separated by the weight of

The embodiments of the present invention described above are merely exemplary, and those of ordinary skill in the art to which the present invention pertains will appreciate that various modifications and equivalent other embodiments are possible therefrom. Therefore, it will be well understood that the present invention is not limited to the forms recited in the above detailed description. Therefore, the true technical protection scope of the present invention should be determined by the technical spirit of the appended claims. It is also to be understood that the present invention includes all modifications, equivalents and substitutions falling within the spirit and scope of the invention as defined by the appended claims.

10: first tilting block
20: second tilting block

Claims (5)

In the head fixing jig for tilting the head in at least two directions from below the head of the subject who is lying on the side of the head so that the midsagittal plane is parallel to the radiation bed,
A first tilting block that is made in the form of a triangular bar, placed between the temple and the ear of the subject, and tilts the head so that the front of the subject's midsagittal plane in equilibrium with the radiation bed is tilted downward; and
It is made in the form of a triangular bar and is jointly installed at the end of the first tilting block in a direction perpendicular to the first tilting block, placed under the temporal bone of the subject, and the left side of the midsagittal plane tilted first by the first tilting block is upward A head fixing jig for mastoid radiography comprising a; a second tilting block for tilting the head to be inclined secondarily. The method according to claim 1,
The first tilting block and the second tilting block head fixing jig for mastoid radiography, characterized in that the inner angle of each facing each other is set within an angle range of 15 ° to 20 °. The method according to claim 1,
A rail is formed on the second tilting block in a longitudinal direction, and a guide member connected to the rail is formed on the first tilting block so that the first tilting block can reciprocate along the longitudinal direction of the second tilting block. A head fixing jig for mastoid radiography, characterized in that it becomes. 3. The method according to claim 2,
The first tilting block and the second tilting block head fixing jig for mastoid radiographs, characterized in that the inner angle of each facing each other is configured to be different from each other within the angle range. delete

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