JP2012143411A - Medical head neck support - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a medical head neck support which enables the head part of a patient to be reliably positioned and fixed and is excellent in reproducibility when re-fixed.SOLUTION: The medical head neck support 1 includes a rear wall part 7 provided with a parietal part abutting surface 6 abutted on the parietal part Hb of the patient P and reliably positions and fixes the head part H in a longitudinal direction Y (head-foot direction). Since a cut part 21 in a recessed curved surface shape is formed on the rear end edge 15 of the parietal part abutting surface 6, the support is adaptable to different sizes and shapes of the head part. Since the head part H of the patient is supported from below and both sides at a position higher than an occipital region support surface 4 by the cut part 21 cut into the recessed curved surface shape, movement of the head part H in the lateral direction X is restricted. When the medical head neck support 1 is used, fixation of the head part H in the longitudinal direction Y and in the lateral direction X is improved, and reproducibility of fixation is improved as well.

Description

  The present invention relates to an improvement in a medical head neck support used for fixing a portion of a patient from the head to the neck in radiation therapy, MR examination or the like.

  For example, in radiotherapy, it is necessary to fix each part of a patient at a fixed position on the treatment table in order to fix the position of the patient on the treatment table and accurately irradiate the affected part with radiation. A pillow-type auxiliary device is known as a head-and-neck fixing device used in the prior art, and this type of device is disclosed as a fixing auxiliary body in FIGS. Yes. In this specification, this type of instrument is referred to as a head neck support.

  As shown in FIG. 6 (a), the general head neck support 100 disclosed in Patent Document 1 has a vertically long rectangular parallelepiped shape as a whole, and the upper surface of the head neck support 100 is for placing a neck protruding upward. The cervical support surface 101 and the occipital support surface 102 for placing the occipital head formed continuously at the rear end of the cervical support surface 101 are formed. As shown in FIG. 6B, a head neck support 100 is placed under the neck N and the head H of the subject or patient P who is sleeping on the treatment table 103, and the neck N is supported by the neck support surface 101. The head 102 is supported by the surface 102, and the patient's head H is positioned in each of the vertical direction (head-foot direction), the horizontal direction, and the vertical direction.

Utility Model Registration No. 3138540

  In the conventional head neck support, there is a problem that the relative position between the patient's head and the head neck support cannot be reliably fixed. In particular, the fixability in the vertical direction and the horizontal direction is insufficient, and the head may not be reliably positioned in these directions. As a result, in repeated treatment or examination, the position of the patient's head is shifted in the vertical and horizontal directions as indicated by the imaginary line in FIG. 5B, and the reproducibility of the fixed position is poor. is there.

  Therefore, as shown in FIG. 6A, a wall 200 is provided at the rear end of the head neck support 100, and the patient P's parietal portion Hb is applied to the inner peripheral surface 201 of the wall 200, thereby positioning in the vertical direction. It is conceivable to be able to perform accurately. However, since the size and shape of the head from the head to the neck are different for each patient, if such a wall is provided, the head neck of multiple sizes and shapes can be accommodated to accommodate the size and shape of the patient's head. It is necessary to prepare a support, which is extremely uneconomical. Unless an appropriate one is selected and used, the head fixation and the reproducibility of the fixed position are greatly deteriorated.

  Further, in order to securely fix the head so that it does not shift laterally, it is necessary to deepen the center of the occipital support surface and raise both sides. In this way, the size and shape of the head that fits the head neck support is further limited, and thus the same problem as described above occurs.

  In view of these points, the object of the present invention is to provide a medical head neck support that can reliably position and fix the heads of patients, subjects, etc., and has excellent reproducibility in the case of re-fixing. It is to propose.

In order to solve the above problems, the medical head neck support of the present invention is:
A cervical support part formed with a convex cervical support surface for placing the patient's cervical part;
A head support portion formed with a curved occipital support surface for continuously placing the patient's occipital region on the back end of the neck support surface;
A back wall portion formed with a head top contact surface for contacting the head top of the patient continuously with the rear end of the back head support surface;
The cervical support surface is a three-dimensional curved surface that is defined by a convex curved surface that forms a top portion in the middle in the front-rear direction, and that is defined by a symmetrical concave curved surface in the width direction.
The occipital support surface is defined by a concave curved surface in which the deepest part is formed in the middle position in the front-rear direction, and a three-dimensional curved surface defined by a symmetric concave curved surface in which the deepest part is formed in the center in the width direction. And
The head contact surface is defined by a concave curve in the front-rear direction and is a three-dimensional curved surface defined by a symmetrical concave curved surface in the width direction.
The rear end edge of the top wall abutting surface in the rear wall is characterized by having a cut-out part cut into a left and right symmetrical concave curved surface whose center is the deepest part of the rear end edge in the width direction. Yes.

  The medical head neck support according to the present invention includes a rear wall portion having a head top contact surface that contacts the head top of the patient. Therefore, the patient's head can be positioned and fixed more reliably in the longitudinal direction (head-foot direction) than in the past. In addition, since a concave curved cutout is formed on the rear edge of the abutment surface of the top wall of the rear wall, if the size of the patient's head is long in the vertical direction, the cutout from the cutout This can be dealt with by projecting the tip of the top backward. Therefore, there is no need to prepare a large number of head neck supports. In addition, the vicinity of the top of the patient's head rides on the cut portion cut into a concave curved surface, and the patient's head is supported from below and on both sides at a position higher than the occipital support surface. Movement in the direction can be restricted. As a result, the patient's head can be positioned and fixed more reliably in the lateral direction than in the prior art. Therefore, according to the present invention, the fixation in the vertical and horizontal directions of the head is improved and the reproducibility of fixation is also improved as compared with the prior art.

  Based on the anatomical shape of the human head, with respect to the height of the deepest part of the rear edge of the rear wall cutout, the width of the rear edge is at least 120% at both ends. It is desirable to be in For example, based on the shape of the head of a Japanese or the like, the cut portion formed in the rear wall portion is at least 90 mm long in the width direction, and both ends of the upper end surface with respect to the rear end edge deepest portion of the rear wall portion Is preferably at least 20 mm higher.

  By forming a concave-curved cutout of this size, a medical head neck support that can accommodate various sizes of heads and can be positioned and fixed securely in the vertical and horizontal directions is realized. it can.

  In the present invention, the top portion extending in the width direction on the neck support surface is generally defined by a symmetric concave curve with the center in the width direction being the deepest portion of the top when viewed from the front-rear direction. In this case, it is desirable that the rearmost edge portion deepest portion of the rear wall portion be at the same height as the topmost deepest portion of the neck support surface.

  A state in which the patient's head placed on the occipital support surface is supported by three points at the same height position higher than the concave curved occipital support surface is formed. Since the vertical and horizontal positions of the head are defined by the three points, the positioning and fixing of the head and the reproducibility of positioning are improved.

  Here, from the viewpoint of ease of processing and the like, it is desirable that the cut portion formed at the rear edge of the rear wall portion is defined by a concave arc surface.

  Next, based on the anatomical shape of the human head, assuming that the height of the deepest part of the top of the neck support surface is the reference height, the deepest part located in the center in the width direction of the occipital support surface is the reference height of 25. It is desirable that the deepest portion of the rear edge of the rear wall is at a height of 90% or less of the reference height.

  In addition to this, both ends of the top portion are at least 120% in height with respect to the height of the top deepest portion in the center of the width direction of the neck support surface, and the height of the deepest portion of the back head support surface is used as a reference. It is desirable that both ends in the width direction passing through the deepest portion on the occipital region support surface are at a height position of at least 120%.

  On the other hand, as a material for the medical head neck support, it is desirable to use a resin foam having a low radiation absorption rate and easy to mold.

It is a perspective view which shows the medical head neck support to which this invention is applied. It is the top view, side view, front view, and back view which show the medical head neck support of FIG. It is a figure which shows the medical head neck support of FIG. 1, (a) is a longitudinal cross-sectional view at the time of cut | disconnecting by the line aa of FIG. 2, (b) is the case of cut | disconnecting by the line bb of FIG. (C) is a cross-sectional view taken along line cc in FIG. 2, and (d) is a cross-sectional view taken along line dd in FIG. It is explanatory drawing which shows the effect of the medical head neck support of FIG. (A) is a perspective view which shows the conventional head neck support, (b) is explanatory drawing which shows the problem. (A) is explanatory drawing which shows the case where the rear wall part of fixed height is added to the conventional head neck support, (b) is explanatory drawing which shows the use condition.

  Hereinafter, an embodiment of a medical head neck support to which the present invention is applied will be described with reference to the drawings.

  Referring to FIGS. 1 and 2, the medical head neck support 1 according to the embodiment of the present invention is a molded product made of a rectangular resin foam that is long in the front-rear direction. The medical head neck support 1 includes a neck support portion 3 formed with a convex neck support surface 2 for placing a patient's neck portion on the front end side. On the rear side, a head support portion 5 formed with a curved occipital support surface 4 for smoothly and continuously placing the patient's occipital region on the rear end of the neck support surface 2 is continuous. Further, a rear wall portion 7 on which a head top abutment surface 6 for smoothly and continuously abutting the patient's head top is formed at the rear end of the back head support surface 4.

  The front edge of the neck support surface 2 is connected to the front end edge 9 of the flat rectangular bottom surface 8, and the side edges 11, 12 on both sides of the neck support surface 2 and the occipital support surface 4 are vertical left and right side surfaces 13, 14. It is connected to the top edge. The rear end edge 15 of the top contact surface 6 is connected to the upper end face 16 having a predetermined width, and the rear end edge of the upper end face 16 is connected to the upper end edge of the vertical back surface 17. Further, the lower end edge 18 of the left and right side surfaces 13 and 14 and the lower end edge 19 of the back surface 17 are connected to the left and right edges and the rear end edge of the rectangular bottom surface 8, respectively.

  The neck support surface 2 is a three-dimensional curved surface that is defined by a convex curved surface in which the top portion 2a is formed in the middle in the front-rear direction Y, and that is defined by a symmetrical concave curved surface in the width direction X. The occipital support surface 4 is defined by a concave curved surface in which the deepest portion B is formed at a midway position in the front-rear direction Y, and is defined by a bilaterally symmetric concave curved surface in which the deepest portion B is formed in the center in the width direction X. 3D curved surface. The top contact surface 6 is a three-dimensional curved surface defined by a concave curve in the front-rear direction Y and defined by a symmetrical concave curved surface in the width direction.

  The boundary between the neck support surface 2 and the back head support surface 4 is located between the top 2 a and the deepest part B, and the boundary between the back head support surface 4 and the top head contact surface 6 is between the deepest part B and the rear edge 15. Although there is a position between, there is no technical meaning in limiting these positions.

  Next, the shape of each part of the medical head neck support 1 will be described in detail with reference mainly to FIG. First, as shown in FIG.3 (d), the upper end surface 16 (rear end edge 15) of the top part contact surface 6 in the rear wall part 7 is horizontal (the both ends F in the width direction are the highest positions). It is a flat surface of a certain length (parallel to the bottom surface 8), and the portion between these is symmetrical with the center in the width direction X being the deepest part (hereinafter referred to as the rearmost edge part deepest part C). The cut portion 21 is cut into a concave shape. The height L (F) of both end portions F in the width direction X of the upper end surface 16 (rear end edge 15) with reference to the height L (C) of the rear end edge deepest portion C of the cutout portion 21 of the rear wall portion 7. ) Is set to a height dimension of at least 120% of L (C).

  In general, the cutout portion 21 formed in the rear wall portion 7 can be defined by a concave arc surface. Further, it is desirable that the length is at least 90 mm in the width direction X, and the both end portions F of the upper end surface 16 are set to be at least 20 mm higher than the height of the rearmost edge portion deepest portion C.

  As shown in FIGS. 3A and 3B, the top 2 a extending in the width direction X of the neck support surface 2 on the neck support surface 2 is a left-right side whose center in the width direction X is the deepest part A at the top when viewed from the front-rear direction Y. It is defined by a symmetrical concave curve. Moreover, in this example, the height L (F) of the rear end edge portion deepest portion C of the rear wall portion 7 is set to the same height dimension as the height L (A) of the topmost deepest portion A of the neck support surface. Has been.

  As shown in FIG. 3A, when the height L (A) of the top deepest portion A of the neck support surface 2 is a reference height, the height of the deepest portion B located at the center in the width direction of the occipital support surface 4 L (B) is set to a height of 25% or less of the reference height. Further, the height L (C) of the rear end edge portion deepest portion C of the rear wall portion 7 is set to 90% or less of the reference height.

  Further, as shown in FIG. 3B, the height L (D) of both end portions D of the top portion 2a with reference to the height L (A) of the topmost deepest portion A at the center in the width direction of the neck support surface 2. Is set to at least 1.2 L (A) (at least 120% height). Also in the occipital region support surface 4, with reference to the height L (B) of the deepest portion B, the height L (E) of both end portions E in the width direction passing through the deepest portion B in the occipital region support surface 4 is at least 1. .2L (B) (120% height).

  With reference to FIG. 4, the effect of the medical head neck support 1 comprised in this way is demonstrated. Since the medical head neck support 1 includes a rear wall portion 7 having a head top contact surface 6 that contacts the head top portion Pb of the patient P, the head H of the patient is placed in the longitudinal direction Y (head-foot direction). Can be positioned and fixed securely. Moreover, since the concave curved cut-out portion 21 is formed at the rear edge 15 of the head top contact surface 6 of the rear wall portion 7, when the size of the head H of the patient P is long in the vertical direction, This can be dealt with by projecting the tip of the head portion Hb backward from the cutout portion 21. Therefore, it is possible to cope with individual differences in size from the neck to the head without preparing a large number of head neck supports.

  Further, the tip of the top Hb of the head H of the patient P rides on the cut portion 21 cut into a concave curved surface, and the patient's head is supported from below and on both sides at a position higher than the occipital support surface 4. Therefore, the movement of the head H in the lateral direction X can be restricted by the concave curved upper surface of the cut-out portion 21. Therefore, the head H of the patient P can be reliably positioned and fixed even in the lateral direction X.

  Furthermore, in this example, the rear end edge portion deepest portion C of the rear wall portion 7 and the top deepest portion A of the top portion 2a extending in the width direction of the neck support surface 2 are set to the same height. In this way, the head H of the patient P placed on the occipital support surface 4 was supported by three points (A, F, F) at the same height position as the concave curved occipital support surface 4. A state is formed. Since the vertical and horizontal positions of the head H are defined by the three-point support, the effect of improving the positioning and fixing properties of the head and the reproducibility of positioning can be obtained.

DESCRIPTION OF SYMBOLS 1 Medical head neck support 2 Neck support surface 3 Neck support part 4 Back head support surface 5 Head support part 6 Head top contact surface 7 Rear wall part 8 Bottom face 9 Front edge 11, 11 Both sides 13, 14 Side 15 Rear end Edge 16 Upper end surface 17 Back surface 18, 19 Lower edge 21 Cutout part A Top deepest part B Deepest part of the occipital support surface C Rear end edge deepest part D Both ends E of the top part Both ends F of the back part support surface Both ends X Horizontal direction Y Vertical direction P Patient (subject)
N neck H head Ha occipital head Hb parietal region

Claims (8)

A neck support (3) having a convex neck support surface (2) for carrying the patient's neck;
A head support (5) having a curved occipital support surface (4) formed to continuously place the patient's occipital region on the back end of the neck support surface (2);
A rear wall portion (7) formed with a head top contact surface (6) for contacting the head top of the patient continuously with the rear end of the back head support surface (4);
The cervical support surface (2) is a three-dimensional curved surface defined by a convex curved surface in which the apex (2a) is formed at an intermediate position in the front-rear direction, and defined by a symmetric concave curved surface in the width direction.
The occipital region supporting surface (4) is defined by a concave curved surface in which the deepest portion (B) is formed at a midway position in the front-rear direction, and is symmetrical in the width direction in which the deepest portion (B) is formed at the center. A three-dimensional curved surface defined by a concave curved surface,
The head contact surface (6) is a three-dimensional curved surface defined by a concave curve in the front-rear direction and a concave curved surface that is symmetrical in the width direction,
The rear end edges (15, 16) of the top abutment surface (6) of the rear wall (7) are symmetrical concave curved surfaces whose center is the rear end edge deepest part (C) in the width direction. A medical head neck support (1), comprising a cutout portion (21) cut into the head. In claim 1,
With reference to the height of the rearmost edge portion deepest portion (C) of the cutout portion of the rear wall portion (7), both widthwise end portions (F) of the rear edge portion are at least 120% in height. A medical head neck support (1) characterized by the above. In claim 1 or 2,
The cutout part (21) formed in the rear wall part (7) has a length of at least 90 mm in the width direction,
Both ends (F) of the rear end edges (15, 16) are at least 20 mm higher than the height of the rear end edge deepest part (C) of the rear wall (7). Medical head neck support (1). In any one of claims 1 to 3,
The top portion (2a) extending in the width direction of the neck support surface (2) is defined by a symmetrical concave curve in which the center in the width direction is the deepest portion (A) when viewed from the front-rear direction,
The head neck support for medical use, characterized in that the rearmost edge portion deepest portion (C) of the rear wall portion (7) is at the same height as the deepest top portion (A) of the neck support surface (2). 1). In any one of claims 1 to 4,
A medical head neck support (1), characterized in that a cutout portion (21) formed in a rear end edge portion (15, 16) of the rear wall portion (7) is defined by a concave arc surface. In any one of claims 1 to 5,
When the height of the top deepest part (A) of the neck support surface (2) is defined as a reference height,
The deepest part (B) located at the center in the width direction of the back head support surface (4) is at a height position of 25% or less of the reference height,
The medical head neck support (1), characterized in that a rear end edge deepest portion (C) of the rear wall (7) is at a height position of 90% or less of a reference height. In claim 6,
Both ends (D) of the top (2a) are at a height of at least 120% based on the height of the deepest top (A) at the center in the width direction of the neck support surface (2),
With reference to the height of the deepest portion (B) of the occipital region support surface (4), both widthwise end portions (E) passing through the deepest portion (B) of the occipital region support surface (4) are at least 120% in height. Medical head neck support (1), characterized in that it is in position. In any one of claims 1 to 7,
A medical head neck support (1), which is formed of a resin foam.

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