medical equipment

Abstract

To provide medical devices in which a wearing form can easily be adjusted according to a wearer's body type.SOLUTION: A corset 1 includes: a lower abdomen supporting part with a lower abdomen fixing plate; a chest supporting part with a chest fixing plate; a pair of vertical arm structures for connecting the chest supporting part with the lower abdomen supporting part, respectively; a lower connection structure for connecting the lower abdomen supporting part with the pair of vertical arm structures; an upper connection structure for connecting the chest supporting part with the pair of vertical arm structures; and a belt for fixing the medical devices to the wearer's body through the rear surface of the wearer's body. At least any of the lower abdomen fixing plate and the chest fixing plate includes a mounting hole for width adjustment having a horizontal hole part extended horizontally and multiple vertical hole parts extended in the vertical direction from the lateral hole part. Multiple connecting holes arranged side-by-side in a portion of the lower connection structure or the upper connection structure are overlapped and fixed with the mounting hole for width adjustment.SELECTED DRAWING: Figure 6

Description

[Technical Field]

[0001] The present invention relates to a medical device, and more particularly to a so-called Jouette-type corset worn by patients suffering from compression fractures or the like. [Background technology]

[0002] So-called Jouette-type corsets have been known for some time to be worn by patients with thoracic or lumbar compression fractures. Jouette-type corsets are designed to prevent compression of the trunk by restricting the wearer's forward bending motion while not restricting backward bending motion. For example, the corset described in Patent Document 1 is known as such a corset. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 6060170 Summary of the Invention [Problem to be solved by the invention]

[0004] The corset described in the above-mentioned Patent Document 1 is equipped with a waist attachment member and a chest compression member, and has a structure in which these members are connected by arms. However, the corset described in Patent Document 1 is configured so that only the angle between the waist attachment member and the arms can be adjusted, which makes it difficult to achieve an appropriate wearing state according to the wearer's body type.

[0005] The present invention has been made to solve the above-mentioned problems, and has as its object to provide a medical device whose wearing form can be easily adjusted according to the wearer's body type. [Means for solving the problem]

[0006] In order to solve the above problems, the present invention provides a medical device worn on the body, comprising a lower abdominal support part having a lower abdominal fixing plate that supports the front of the lower abdomen of a wearer, a chest support part having a chest fixing plate that supports the front of the chest of the wearer, a pair of vertical arm structures that are arranged to extend along the sides of the wearer's body when worn and connect the lower abdominal support part and the chest support part, respectively, a lower connecting structure that is provided between the lower abdominal support part and the pair of vertical arm structures and connects the lower abdominal support part and the pair of vertical arm structures, and a connecting structure that connects the chest support part and the pair of vertical arm structures. the medical device is provided with an upper connecting structure that is provided between a pair of vertical arm structures and connects the chest support section and the pair of vertical arm structures; and a belt that passes through the rear of the wearer's body to secure the medical device to the wearer's body, and at least one of the lower abdomen fixing plate and the chest fixing plate has a width-adjusting attachment hole that has a horizontal hole portion that extends horizontally and a plurality of vertical hole portions that extend vertically from the horizontal hole portion, and is fixed by overlapping the width-adjusting attachment hole with a plurality of connecting holes that are arranged in a row on a part of the lower connecting structure or the upper connecting structure.

[0007] According to the present invention configured in this manner, the margin for the connection angle between the lower abdomen fixing plate or chest fixing plate and the lower connecting structure or upper connecting structure is increased, making it possible to provide a medical device whose wearing form can be easily adjusted according to the wearer's body type.

[0008] Also, in the present invention, preferably, the vertical hole portions of the width adjustment mounting holes are configured so that the vertical length is shorter the closer they are to the end of the lower abdomen fixing plate or the chest fixing plate, and the vertical length is longer the closer they are to the center of the lower abdomen fixing plate or the chest fixing plate.

[0009] According to the present invention configured in this manner, the margin for the connection angle between the lower abdominal fixation plate or chest fixation plate and the lower connecting structure or upper connecting structure can be further increased, allowing for more flexible adjustment of the wearing form of the medical device.

[0010] Also, preferably in the present invention, the pair of vertical arm structures each comprise an elongated plate member arranged to extend along the side of the wearer's body when worn, the plate member comprising a lower bolt mounting hole for inserting a bolt for rotatably supporting the plate member on the lower abdomen support part, and a plurality of first retaining mounting holes arranged at predetermined angular intervals around the lower bolt mounting hole, the lower abdomen support part comprising a pair of lower abdomen arms extending from the lower abdomen fixation plate towards the sides of the wearer's body, the lower abdomen arms comprising a lower abdomen bolt mounting hole for inserting the bolt, and a plurality of second retaining mounting holes arranged at predetermined angular intervals around the lower abdomen bolt mounting hole, the plate member and the lower abdomen arms are rotatably supported by the bolts, and the first retaining mounting hole and the second retaining mounting hole are positioned so that when rotated relative to each other, the first retaining mounting hole and the second retaining mounting hole overlap at equal angular intervals, and further comprising a retaining bolt for insertion into the overlapping first retaining mounting hole and second retaining mounting hole.

[0011] According to the present invention configured in this manner, the angle between the lower abdominal arm of the lower abdominal support part and the plate member of the vertical arm structure can be fixed by overlapping the first retaining mounting holes and second retaining mounting holes, which are installed at equal angular intervals, and inserting retaining bolts into these holes. This makes it possible to easily adjust the connection angle between the lower abdominal arm and the plate member, while minimizing the number of retaining mounting holes around the lower bolt mounting holes and the lower abdominal bolt mounting holes, thereby enabling the lower abdominal arm and plate member to be made smaller.

[0012] Furthermore, in a preferred embodiment of the present invention, the pair of vertical arm structures each include an elongated plate member arranged to extend along the side of the wearer's body when worn, the plate member including an upper bolt mounting hole for inserting a bolt for rotatably supporting the plate member on the chest support part, and a plurality of third retaining mounting holes provided at predetermined angular intervals around the upper bolt mounting hole, the chest support part including a pair of chest arms extending from the chest fixation plate toward the sides of the wearer's body, the chest arms including a chest bolt mounting hole for inserting the bolt, and a plurality of fourth retaining mounting holes provided at predetermined angular intervals around the chest bolt mounting hole, the plate member and the chest arms are rotatably supported by the bolts, and the third retaining mounting holes and the fourth retaining mounting holes are positioned so that when the plate member and the chest arms are rotated relative to each other, the third retaining mounting holes and the fourth retaining mounting holes overlap at equal angular intervals, and the chest support part further includes a mounting bolt for insertion into the overlapping third retaining mounting hole and fourth retaining mounting hole.

[0013] According to the present invention configured in this manner, the angle between the chest arm of the chest support part and the plate member of the vertical arm structure can be fixed by overlapping the third and fourth retaining mounting holes, which are installed at equal angular intervals, and inserting a retaining bolt into the overlapping holes. This makes it possible to easily adjust the connection angle between the chest arm and the plate member, while minimizing the number of retaining mounting holes around the upper bolt mounting holes and chest bolt mounting holes, allowing the chest arm and plate member to be made smaller. [Effects of the Invention]

[0014] As described above, according to the present invention, the wearing mode of the medical device can be easily adjusted according to the body type of the wearer, and thus a common medical device can be adjusted to fit wearers of various body types. [Brief explanation of the drawings]

[0015] [Figure 1]FIG. 1 is a side view of a corset according to an embodiment of the present invention. [Figure 2] FIG. 1 is a front view of a corset according to an embodiment of the present invention. [Figure 3] 1 is an enlarged view of the upper and lower connecting structures of a corset according to an embodiment of the present invention. [Figure 4] FIG. 1 is a side view of a vertical arm structure of a corset according to an embodiment of the present invention. [Figure 5] FIG. 1 is a front view of a vertical arm structure of a corset according to an embodiment of the present invention. [Figure 6] FIG. 1 is a front view of a chest fixing structure of a corset according to an embodiment of the present invention. [Figure 7] FIG. 1 is a front view of a corset according to an embodiment of the present invention, and is a view particularly for explaining the structure of the belt. DETAILED DESCRIPTION OF THE INVENTION

[0016] Hereinafter, embodiments of the present invention will be described in detail. In the following embodiments, an example in which the medical device according to the present invention is configured as a corset will be described. Fig. 1 is a side view of the corset, and Fig. 2 is a front view of the corset. In the following description, the side and front refer to the side and front of the human body when the corset is worn, and vertical, upward or downward, and horizontal, left and right refer to the respective directions when the wearer is standing.

[0017] As shown in Figures 1 and 2, corset 1 comprises a lower abdominal support part 3 that contacts the front of the wearer's lower abdomen, a chest support part 5 that contacts the front of the wearer's chest, a pair of vertical arm structures 7 that are arranged to extend along the sides of the wearer's body when worn and connect the lower abdominal support part 3 and the chest support part 5 on both sides of the body, respectively, and a belt 9 that passes through the back of the wearer's body to secure the corset to the wearer's body.

[0018] The lower abdomen support part 3 is configured to support the lower abdomen from the front of the wearer when worn. The lower abdomen support part 3 includes a lower abdomen contact member 11 that contacts the wearer's lower abdomen, a lower abdomen fixing plate 13 that supports the lower abdomen contact member 11, and a pair of lower abdomen arms 15 that extend from the lower abdomen fixing plate 13 to both sides of the wearer.

[0019] The lower abdomen contact member 11 is a plate with a cushioning material such as sponge attached to its surface, and is the member that comes into contact with the wearer's lower abdomen when worn. The lower abdomen contact member 11 is fixed to the lower abdomen fixing plate 13 by a lower abdomen belt 17. The pair of lower abdomen arms 15 are composed of elongated plates of a predetermined shape, one end of which is attached to the lower abdomen fixing plate 13 and the other end of which is attached to the vertical arm structure 7. The lower abdomen arms 15 are curved upward so as not to interfere with the wearer's thighs when they are raised while wearing the corset, especially when sitting.

[0020] The chest support part 5 is configured to support the chest from the front of the wearer when worn. The chest support part 5 includes a chest contact member 21 that comes into contact with the wearer's chest, a chest fixing plate 23 that supports the chest contact member 21, and a pair of chest arms 25 that extend from the chest fixing plate 23 to both sides of the wearer.

[0021] The chest contact member 21 is a plate with a cushioning material such as sponge attached to its surface, and is the member that comes into contact with the wearer's chest when worn. The chest contact member 21 is fixed to the chest fixing plate 23 by a chest belt 27. The pair of chest arms 25 are made up of elongated plates of a predetermined shape, one end of which is attached to the chest fixing plate 23 and the other end is attached to the vertical arm structure 7. The chest arms 25 are curved downward so as not to interfere with the wearer's sides when the corset is worn.

[0022] The vertical arm structure 7 comprises two elongated plate members 31, 33 arranged to extend along the sides of the wearer's body when worn, and a height-adjusting plate member 35 arranged between the two elongated plate members 31, 33. The left and right vertical arm structures 7 basically have the same structure, but one of the vertical arm structures 7 (the right side of the wearer in the illustrated example) is fitted with a belt fixing metal fitting 41 for fixing one end of the belt 9.

[0023] The vertical arm structure 7 is connected to the chest support part 5 via an upper connecting structure, and is further connected to the lower abdominal support part 3 via a lower connecting structure.

[0024] 3 is a schematic diagram of the upper connecting structure disposed between the vertical arm structure 7 and the chest support section 5. Although a detailed description will be omitted, the lower connecting structure disposed between the vertical arm structure 7 and the lower abdominal support section 3 has exactly the same structure as the upper connecting structure.

[0025] 3, the upper connecting structure is configured by connecting the plate member 31 of the vertical arm structure 7 and the chest arm 25 of the chest support section 5. More specifically, of the two plate members 31, 33 of the vertical arm structure 7, a circular upper bolt mounting hole 51 is provided near the upper end of the upper plate member 31, and a plurality of holding mounting holes 53 are arranged around the upper bolt mounting hole 51 at positions on a circle concentric with the upper bolt mounting hole 51. In this embodiment, six holding mounting holes 53 are arranged at equal angular intervals (for example, 5 degrees) at positions on a circle concentric with the upper bolt mounting hole 51.

[0026] The chest arm 25 is also provided with a chest bolt mounting hole 55 having the same diameter as the upper bolt mounting hole 51, and furthermore, a plurality of holding mounting holes 57 are arranged around the chest bolt mounting hole 55 at positions on a circle concentric with the chest bolt mounting hole 55. In this embodiment, six holding mounting holes 57 are arranged at equal angular intervals (for example, 5 degrees) at positions on a circle concentric with the chest bolt mounting hole 55.

[0027] During assembly, the chest arm 25 and the plate member 31 are overlapped so that the chest bolt mounting hole 55 and the upper bolt mounting hole 51 overlap, and bolts are inserted into the chest bolt mounting hole 55 and the upper bolt mounting hole 51. This allows both members to be rotatably supported. The retaining mounting holes 53 and 57 can be set at positions where one or more of the retaining mounting holes 53 and 57 overlap when the chest arm 25 and the plate member 31 are rotated relative to each other around the bolt. The angle of both members can be fixed by installing additional bolts in the overlapping retaining mounting holes 53 and 57. This configuration allows the angle between the chest support section 5 and the vertical arm structure 7 to be tilted forward or backward to suit the wearer's body shape. The rotation angle at which the retaining mounting hole 57 of the chest arm 25 overlaps with the retaining mounting hole 53 of the plate member 31 can be set as appropriate. In this embodiment, the angle between the chest support part 5 and the vertical arm structure 7 can be adjusted in 12 steps (for example, 60 degrees) from the most forward-leaning state to the most backward-leaning state.

[0028] Fig. 4 is a side view of the vertical arm structure, and Fig. 5 is a front view of the same structure. As shown in Figs. 4 and 5, plate members 31 and 33 have slots 61 and 63 extending vertically. Height-adjustment plate member 35 has a plurality of height-adjustment mounting holes 65 aligned vertically. During assembly, plate members 31 and 33 are fixed to the main surfaces on both sides of height-adjustment plate member 35. By inserting bolts (not shown) into slots 61 and 63 and height-adjustment mounting holes 65, the relative vertical positions of plate members 31 and 33 can be freely adjusted and fixed.

[0029] Furthermore, a fixing hole 67 for attaching the belt fixing metal fitting 41 to the height adjustment plate member 35 is provided at a position horizontally offset from the height adjustment mounting hole 65 in the height adjustment plate member 35. By offsetting the fixing hole 67 from the height adjustment mounting hole 65, it is possible to prevent the belt fixing metal fitting 41 from interfering with the plate members 31, 33.

[0030] FIG. 6 is a front view showing the chest fixation plate 23 of the chest support section 5. As shown in FIG. 6, the chest fixation plate 23 has width-adjustment attachment slots 71 for fixing the chest arm 25 and the chest fixation plate 23. In this embodiment, the chest fixation plate 23 has two width-adjustment attachment slots 71 arranged horizontally. The width-adjustment attachment slot 71 has a horizontal hole 71a extending horizontally and multiple vertical holes 71b extending vertically from the horizontal hole 71a. Of the multiple vertical holes 71b, those closer to the ends of the chest fixation plate 23 have shorter vertical lengths, and those closer to the center of the chest fixation plate 23 have longer vertical lengths. The chest fixation plate 23 also has insertion holes 73 for inserting the chest belt 27 at positions offset vertically above and below the width-adjustment attachment slots 71. The chest belt 27 is inserted through insertion holes 73 located above and below the width-adjusting attachment slots 71, and further through insertion holes provided near the upper and lower central ends of the chest contact member 21, with each end fixed to the surface of the chest contact member 21 with hook-and-loop fasteners, buttons, or the like. The chest arms 25 are also provided with a plurality of chest plate attachment holes 75 at their ends closer to the center of the wearer's body. During assembly, the horizontal spacing between the chest arms 25 can be adjusted, and the chest fixing plate 23 and chest arms 25 can be fixed together by inserting bolts (not shown) into the width-adjusting attachment slots 71 and the chest plate attachment holes 75.

[0031] Although detailed explanation will be omitted, the lower abdomen support part 3 also has a similar configuration, and a similar configuration is used in the lower abdomen to adjust the horizontal spacing between the lower abdomen arms 15 and fix the lower abdomen arms 15 to the lower abdomen fixing plate 13.

[0032] Here, when the connection angle between the chest support section 5 and the vertical arm structure 7 (plate member 31) is changed, the connection angle between the chest fixation plate 23 and the chest arm 25 or the connection angle between the lower abdomen fixation plate 13 and the lower abdomen arm 15 may not overlap horizontally but may be tilted. In FIG. 6 , the chest arm 25 indicated by the dashed line shows a state in which it overlaps with the chest fixation plate 23 at an angle from the horizontal. In this case, because the width-adjusting attachment slot 71 in the chest fixation plate 23 includes a horizontal hole 71a and a vertical hole 71b, the multiple chest plate attachment holes 75 can overlap not only the horizontal hole 71a but also the vertical hole 71b of the width-adjusting attachment slot 71. In other words, the chest fixation plate 23 of this embodiment has a larger margin for the connection angle with the chest arm 25 compared to a configuration without a vertical hole 71b. Since the lower abdomen support part 3 also has a similar configuration, even when the connection angle between the lower abdomen support part 3 and the vertical arm structure 7 (plate member 33) is changed, the lower abdomen fixing plate 13 has an increased margin for the connection angle with the lower abdomen arm 15. As a result, there is no need to use multiple components to create a structure that allows for a margin in the connection angle between the chest support part 5 or lower abdomen support part 3 and the vertical arm structure 7, and therefore the number of parts required to construct the corset 1 can be reduced.

[0033] Fig. 7 is a diagram illustrating the structure of the belt 9. As shown in Fig. 7, the belt 9 has a substantially Y-shape, and one end that does not branch is fixed to the height-adjusting plate member 35 of the vertical arm structure 7 on one side. One of the branched ends of the Y-shaped belt 9 is detachably attached to the chest arm 25 on the opposite side, and the other is detachably attached to the lower abdominal arm 15 on the opposite side.

[0034] As described above, with the corset 1, the wearing style of the corset 1 can be easily adjusted according to the wearer's body type, and a single corset can be adjusted to fit wearers of various body types. More specifically, the vertical arm structure 7 allows the height of the corset 1 to be freely adjusted and fixed, the lower abdominal support section 3 and the chest support section 5 allow the width of the corset 1 to be freely adjusted and fixed, and the upper connecting structure and lower connecting structure allow the angle of the lower abdominal support section 3 and the chest support section 5 to be freely adjusted and fixed. This allows one corset 1 to be adjusted to fit wearers of various body types.

[0035] Furthermore, because the width-adjusting attachment slots 71 of the chest fixation plate 23 include horizontal holes 71a and vertical holes 71b, even if the connection angles between the chest support section 5 and the vertical arm structure 7 do not overlap horizontally, the multiple chest plate attachment holes 75 can overlap not only with the horizontal holes 71a but also with the vertical holes 71b of the width-adjusting attachment slots 71. The lower abdomen fixation plate 13 also has a similar configuration. This increases the margin for the connection angle between the chest fixation plate 23 and the chest arm 25 and the connection angle between the lower abdomen fixation plate 13 and the lower abdomen arm 15, and simplifies the structure for providing a margin for the connection angle between the chest support section 5 or lower abdomen support section 3 and the vertical arm structure 7.

[0036] Furthermore, by overlapping the holding mounting holes 53 and the holding mounting holes 57 at equal angular intervals (for example, 5 degrees), it is possible to freely adjust and fix the angles of the lower abdomen support section 3 and the chest support section 5 in the upper connecting structure and the lower connecting structure, while simplifying the structure of the ends of the chest arm 25 and the plate member 31. In other words, by using a small number of holding mounting holes, it is possible to reduce the number of holding mounting holes formed at the ends of the chest arm 25 and the plate member 31, and this makes it possible to reduce the size of the chest arm 25 and the plate member 31 while preventing a decrease in strength.

[0037] Furthermore, by making the belt 9 substantially Y-shaped, fixing its first end to the height-adjusting plate member 35, and detachably attaching the branched second end to the chest arm 25 and the lower abdominal arm 15, the end of the belt 9 to be attached and detached can be extended to the front of the wearer's body. This allows the wearer to easily attach and detach the belt 9 without having to reach their hands all the way to their back.

[0038] Furthermore, by fixing the chest contact member 21 to the chest fixing plate 23 with the chest belt 27, the number of parts attached to the chest support part 5 can be reduced, and the structure protruding toward the wearer can be reduced, improving the wearing comfort for the wearer.

[0039] In addition, the abdominal arms 15 are curved so as not to interfere with the wearer's thighs when worn, and the chest arms 25 are curved so as not to interfere with the wearer's sides when worn, thereby reducing discomfort when worn.

[0040] The present invention is not limited to the above-described embodiment, and any modifications and improvements that can achieve the object of the present invention are included in the present invention. For example, in the above-described embodiment, both the chest support section 5 and the lower abdomen support section 3 have been described as having the same configuration, but this is not limited to this. That is, one of the chest support section 5 and the lower abdomen support section 3 may have the configuration of the above-described embodiment, while the other may have an existing structure, or may have a structure that is a modification of the configuration of the above-described embodiment. Examples of modifications of the configuration of the above-described embodiment include a structure in which the number of retaining attachment holes 57 is reduced, a structure in which the retaining attachment holes 57 are not arranged at equal angular intervals, and a structure in which the vertical hole portions 71b of the width-adjusting attachment slots 71 are equal in length.

[0041] Furthermore, in the above-described embodiment, the vertical holes 71b of the width-adjusting mounting slots 71 are configured so that the vertical holes 71b closer to the ends of the chest fixation plate 23 have shorter vertical lengths and the vertical holes closer to the center of the chest fixation plate 23 have longer vertical lengths. However, various other modifications can be made to the configuration of the vertical holes 71b. For example, the vertical holes 71b may be configured to have a shape that follows a portion of a circumference so as to follow the locus of the positions of the vertical holes 71b, with the bolts installed in the chest bolt mounting holes 55 and the upper bolt mounting holes 51 as the instantaneous center. Furthermore, for example, the positional change due to a change in the coupling angle of vertical holes 71b located farther away from the bolts installed in the chest bolt mounting holes 55 and the upper bolt mounting holes 51 is greater, so the shape (width, etc.) of the vertical holes 71b of the width-adjusting mounting slots 71 may be made larger the closer to the center of the chest fixation plate 23 (i.e., the farther from the instantaneous center).

[0042] In the above embodiment, the present invention has been described as being configured as a corset, but the present invention is not limited to this. That is, the present invention can be configured as various medical devices, such as supports and medical prosthetic devices.

[0043] The above-described embodiment shows an example of application of the present invention and does not limit the technical scope of the present invention. In other words, the present invention can be modified in various ways, such as by omission or substitution, without departing from the spirit of the present invention, and various embodiments other than the above-described embodiment can be adopted. The various embodiments and modifications that the present invention can adopt are included in the scope of the invention described in the claims and their equivalents. [Explanation of symbols]

[0044] 1. Corset 3 Lower abdominal support 5 Chest support part 7 Vertical arm structure 9 Belt 11 Lower abdomen contact member 13 Lower Abdominal Fixation Plate 15 Lower Abdominal Arm 17 Lower Abdominal Belt 21 Chest contact member 23 Chest Fixation Plate 25 Chest Arm 27 Chest belt 31, 33 Plate member 35 Height adjustment plate member 51 Upper bolt mounting hole 53,57 Mounting holes for retention 55 Chest bolt mounting hole 61,63 Slots 65 Height adjustment mounting hole 71 Width adjustment mounting slot 71a Side hole 71b Vertical hole

Claims

1. A medical device worn on the body, a lower abdominal support part including a lower abdominal fixing plate for supporting the front surface of the lower abdomen of the wearer; a chest support part including a chest fixing plate that supports the front of the chest of the wearer; a pair of vertical arm structures that are arranged to extend along the sides of the wearer's body when worn and connect the lower abdominal support portion and the chest support portion, respectively; a lower connecting structure provided between the lower abdominal support portion and the pair of vertical arm structures, connecting the lower abdominal support portion and the pair of vertical arm structures; an upper connecting structure provided between the chest support portion and the pair of vertical arm structures, connecting the chest support portion and the pair of vertical arm structures; a belt for passing through the rear of the wearer's body and fastening the medical device to the wearer's body; At least one of the lower abdomen fixation plate and the chest fixation plate is provided with a width-adjustment attachment hole having a horizontal hole portion extending horizontally and a plurality of vertical hole portions extending vertically from the horizontal hole portion, and the medical device is fixed by overlapping the width-adjustment attachment hole with a plurality of connecting holes arranged in a row in a part of the lower connecting structure or the upper connecting structure.

2. 2. The medical device according to claim 1, wherein the plurality of vertical hole portions of the width adjustment mounting holes are configured so that the vertical hole portions closer to the ends of the lower abdomen fixation plate or the chest fixation plate have shorter vertical lengths, and the vertical hole portions closer to the center of the lower abdomen fixation plate or the chest fixation plate have longer vertical lengths.

3. the pair of vertical arm structures each include an elongated plate member arranged to extend along a side of a wearer's body when worn; the plate member includes a lower bolt mounting hole for inserting a bolt for rotatably supporting the plate member relative to the lower abdomen support portion, and a plurality of first retaining mounting holes provided at predetermined angular intervals around the lower bolt mounting hole, The lower abdominal support portion includes a pair of lower abdominal arms extending from the lower abdominal fixing plate toward the sides of the wearer's body, the lower abdomen arm includes a lower abdomen bolt mounting hole for inserting the bolt, and a plurality of second retaining mounting holes provided at predetermined angular intervals around the lower abdomen bolt mounting hole, the plate member and the lower abdominal arm are rotatably supported by the bolts, and the first retaining mounting holes and the second retaining mounting holes are positioned so that, when the plate member and the lower abdominal arm are rotated relative to each other, the first retaining mounting holes and the second retaining mounting holes overlap at equal angular intervals, The medical device according to claim 1 or 2, further comprising a retaining bolt for insertion into the overlapping first retaining mounting hole and the second retaining mounting hole.

4. the pair of vertical arm structures each include an elongated plate member arranged to extend along a side of a wearer's body when worn; the plate member includes an upper bolt mounting hole for inserting a bolt for rotatably supporting the plate member relative to the chest support part, and a plurality of third retaining mounting holes provided at predetermined angular intervals around the upper bolt mounting hole; the chest support portion includes a pair of chest arms extending from the chest fixation plate toward the sides of the wearer's body, the chest arm includes a chest bolt mounting hole for inserting the bolt, and a plurality of fourth retaining mounting holes provided at predetermined angular intervals around the chest bolt mounting hole, the plate member and the chest arm are rotatably supported by the bolts, and the third retaining mounting holes and the fourth retaining mounting holes are positioned so that when the plate member and the chest arm are rotated relative to each other, the third retaining mounting holes and the fourth retaining mounting holes overlap at equal angular intervals, The medical device according to claim 1 or 2, further comprising a retaining bolt for insertion into the overlapping third retaining mounting hole and the fourth retaining mounting hole.

Images