Joint protective brace

Abstract

This joint protective brace comprises: a cylindrical main body part composed of a stretchable fabric; at least one wire provided so as to pass through a prescribed path along the main body part; a guide part that is fixed to the main body part in accordance with the path and guides the wire; and an adjuster that is fixed to a surface of the main body part and is capable of winding the wire. The wire includes a first elongated portion passing over the cubital fossa or the popliteal fossa in the elbow joint or the knee joint, and a second elongated portion passing over the medial collateral ligament or near the medial collateral ligament in the elbow joint or the knee joint. The first elongated portion and the second elongated portion are arranged so as to approach each other as approaching a distal end.

Description

Joint protection orthosis

[0001] The present disclosure relates to a joint protection orthosis.

[0002] Conventionally, knee orthoses or elbow orthoses that are worn on a wearer's knee joint or elbow joint are known. These orthoses are used for purposes such as joint stabilization. The elbow orthosis described in Patent Document 1 includes an upper sub-region, a central sub-region, and a lower sub-region on a fabric support serving as a carrier element. A strap system is attached via a connecting element. The strap system consists of a first section and a second section, which cross at a first crossing region and a second crossing region respectively, and are routed in a figure-eight shape. The connecting element includes a rotating knob and functions as a tension element that applies tension to the strap.

[0003] International Publication No. 2019 / 101910

[0004] The above-described orthosis has a complicated strap routing. Although the orthosis may be suitable for treating limb pain, it cannot be said to be suitable, for example, as an orthosis for when a wearer plays sports. For example, the strap system may excessively restrict the movement of the wearer's joint.

[0005] The present disclosure describes a joint protection orthosis that allows joint movement without excessive restriction and can suppress the load on ligaments caused by full extension of the joint.

[0006] [1] A joint protection orthosis according to one aspect of the present disclosure includes: a cylindrical main body portion made of stretchable fabric and including a proximal end and a distal end; at least one wire provided to run along a predetermined path along the main body portion; a tube-shaped guide portion through which the wire passes, the guide portion being fixed to the main body portion along the path and guiding the wire; and an adjuster fixed to a surface of the main body portion, to which an end of the wire is connected, and capable of winding the wire. The wire includes a first elongated portion passing over the cubital fossa or popliteal fossa of an elbow joint or a knee joint, and a second elongated portion passing over or near the medial collateral ligament of the elbow joint or the knee joint. The first elongated portion and the second elongated portion are arranged to approach each other as they get closer to the distal end.

[0007] According to the joint protection orthosis of [1], the first long portion of the wire passes over the cubital fossa or popliteal fossa of the elbow or knee joint. The second long portion of the wire passes over or near the medial collateral ligament of the elbow or knee joint. The first and second long portions are positioned to move closer to each other as they approach the distal end. When the wearer puts on the joint protection orthosis and winds up the wire using the adjuster, the tension in both the first and second long portions increases. The first and second long portions do not cross each other and extend in a direction that they merge at the distal end. As a result, the joint can be protected in the extended position using the "lever principle" without hindering flexion or extension of the joint. In the above-mentioned Patent Document 1, the strap system crosses in the part to be protected, making it difficult to flex the joint. According to the joint protection orthosis of [1], the length of the lever (i.e., the moment arm) in the "lever principle" is longer, so the joint can be protected with less force than in Patent Document 1. Furthermore, the tension of the first long portion prevents the joint from fully extending. The medial collateral ligament, which is susceptible to damage from the load during movement, is positioned between the first and second long portions. Therefore, the medial collateral ligament is protected, and damage to the medial collateral ligament can be suppressed. As described above, the joint protection orthosis of [1] allows for joint movement without excessive restriction, and suppresses the load on the joint, especially the medial collateral ligament, caused by the joint fully extending.

[0008] [2] In the joint protection orthosis described in [1] above, the wire may include a first long portion and a second long portion, and the portion between the first long portion and the second long portion may have an inner wire that is folded back near the distal end. With this configuration, a common tension acts on the first long portion and the second long portion which are positioned to sandwich the medial collateral ligament. Therefore, the medial collateral ligament can be adequately protected.

[0009] [3] In the joint protection orthosis described in [2] above, the wire may include a third and fourth long portion that pass outside the first long portion, and the portion between the third and fourth long portions may be folded back near the distal end, and the outer wire may include a proximal circumferential portion that extends circumferentially near the proximal end. The proximal circumferential portion prevents the main body from slipping in the upper arm, thigh, etc. Also, a common tension acts on the third and fourth long portions, protecting the lateral collateral ligament.

[0010] [4] In the joint protection orthosis described in [2] above, the wire may have a proximal circumferential wire that extends only in the circumferential direction near the proximal end. Since the proximal circumferential wire does not extend in the longitudinal direction, it does not hinder joint movement during exercise. This allows for free movement of the entire arm or leg while protecting the medial collateral ligament.

[0011] [5] In any one of the joint protection orthoses described in [1] to [4] above, a belt extending in the circumferential direction to increase compression at the wrist or ankle may be provided near the distal end of the main body. The belt prevents the main body from slipping at the wrist or ankle.

[0012] [6] The joint protection orthosis described in [5] above may further include a hook fixed to the surface of the main body and for folding back the long portion of the wire extending in the longitudinal direction of the main body near its distal end, and the hook may be integrated with the belt. With this configuration, slippage of the main body at the wrist or ankle can be prevented even when the wire is being wound up (tightened) by the adjustment device.

[0013] [7] In any one of the joint protection orthoses described in [1] to [6] above, the main body is adapted to cover the upper arm, elbow, forearm, and wrist of the human body, and the first long portion of the wire may pass over the cubital fossa of the elbow joint, and the second long portion of the wire may pass over or near the medial collateral ligament of the elbow joint. This configuration allows for the movement of the elbow joint without excessive restriction, and suppresses the load on the elbow joint, especially the medial collateral ligament (UCL, the ligament on the ulnar side), caused by the elbow joint being fully extended.

[0014] [8] In any one of the joint protection orthoses described in [1] to [6] above, the main body is adapted to cover the area of ​​the human body from the thigh to the knee, lower leg, and ankle, and the first long portion of the wire may pass over the popliteal fossa of the knee joint, and the second long portion of the wire may pass over or near the medial collateral ligament of the knee joint. This configuration allows for knee joint movement without excessive restriction and suppresses the load on the knee joint, especially the medial collateral ligament (MCL), caused by the knee joint being fully extended.

[0015] [9] In any one of the joint protection orthoses described in [1] to [8] above, the guide portion may be fixed to the back side of the main body portion according to the route. With this configuration, the wire route is not exposed, and the appearance is excellent. When the joint protection orthose is worn on the skin, the guide portion comes into contact with the wearer's skin. However, since the guide portion covers the wire, the wire does not injure the skin when the wire is wound up.

[0016]

[10] In any one of the joint protection orthoses described in [2] to [4] above, the internal wire may be looped, with the first and second ends fixed to an adjuster. This configuration makes it easier to apply tension to the internal wire.

[0017]

[11] In any one of the joint protection orthoses described in [2] to [4] above, the internal wire may have a first end fixed to an adjuster and a second end fixed to a fastener located at a different position from the adjuster, thus forming a non-loop shape. This configuration allows for a reduction in the overall length of the wire other than the first and second long sections. As a result, tension is not applied to areas other than the protected portion, and the degree of freedom of the arm (or leg) during movement is increased.

[0018]

[12] In the joint protection orthosis described in [2] or [4] above, the wire may include a third and fourth long portion that pass outside the first long portion, and the portion between the third and fourth long portions may have an outer wire that is folded back near the distal end. With this configuration, a common tension acts on the third and fourth long portions, protecting the lateral collateral ligament.

[0019]

[13] In the joint protection orthosis described in [3] or

[12] above, the inner wire and the outer wire may be retractable using a single common adjustment device. This configuration allows the inner wire and the outer wire to be retracted simultaneously in a single retraction operation, resulting in excellent operability. Since only one adjustment device is needed for ligament protection, the configuration is simplified.

[0020]

[14] In the joint protection orthosis described in

[12] above, the outer wire may have a first end fixed to an adjuster and a second end fixed to a fastener located at a different position from the adjuster, and may be in a non-loop shape. This configuration allows for a reduction in the overall length of the wire. No tension is applied to areas other than the protected portion, and the degree of freedom of the arm (or leg) during movement is increased.

[0021]

[15] In the joint protection orthosis described in

[12] above, the first end of the first long portion of the inner wire and the first end of the third long portion of the outer wire are fixed to a common adjustment device, the second end of the second long portion of the inner wire is fixed to an inner wire fixing device located at a different position from the adjustment device, and the second end of the fourth long portion of the outer wire is fixed to an outer wire fixing device located at a different position from the adjustment device, and the inner and outer wires may be in a non-loop shape. Since only one adjustment device is needed for protecting both the medial and lateral ligaments, the structure is simplified. In addition, a balance between the medial and lateral sides is maintained.

[0022] According to this disclosure, it is possible to allow joint movement without excessively restricting it, and to suppress the load on the joint, especially the medial collateral ligament, caused by the joint being fully extended (hyperextension).

[0023] Figure 1 is a diagram showing the side (inner surface) of the arm joint protection orthosis according to the first embodiment of this disclosure, with the adjustment mechanism provided, laid flat. Figure 2 is a diagram showing the opposite side (outer surface) of the arm joint protection orthosis according to the first embodiment of this disclosure, laid flat. Figure 3 is an exploded view of the joint protection orthosis shown in Figures 1 and 2. Figure 4(a) is a perspective view showing the joint protection orthosis turned inside out and in a cylindrical shape, and Figure 4(b) is a perspective view showing a magnified view of the wire hole and the end of the guide part. Figure 5(a) is a perspective view showing the joint protection orthosis turned inside out and in a cylindrical shape, and Figure 5(b) is a perspective view showing a magnified view of the wire hole and the end of the guide part. Figure 6 is a diagram showing the elbow joint protection orthosis in a state where it is fitted by the wearer. Figures 7(a) and 7(b) are cross-sectional views showing modified examples of the guide parts that guide the inner wire and outer wire, respectively. Figure 8 is a side view showing the positional relationship between the medial collateral ligament (UCL) and the wire path in the elbow joint. Figure 9 is a cross-sectional view showing the positional relationship between the medial collateral ligament (UCL) and the wire path in the elbow joint. Figure 10 is an exploded view of a modified example of the first embodiment. Figure 11 is an exploded view of another modified example of the first embodiment. Figure 12 is an exploded view of an arm joint protection orthosis according to the second embodiment of this disclosure. Figure 13 is an exploded view of a modified example of the second embodiment. Figures 14(a) to 14(c) each show examples of the arrangement of the internal wire in the modified example of Figure 13. Figure 15 shows an example of the fixation device in Figure 14(a). Figure 16 is an exploded view of another modified example of the second embodiment. Figure 17 shows another example of the arrangement of the internal wire in the modified example of Figure 13. Figure 18 is an exploded view of an arm joint protection orthosis according to the third embodiment of this disclosure. Figure 19 is an enlarged view of the folded portion of the proximal circumferential wire. Figures 20(a) and 20(b) are a front view and a rear view showing the fitted state of a leg joint protection orthosis according to the fourth embodiment of this disclosure. Figure 21 is a side view showing the positional relationship between the medial collateral ligament (MCL) and the wire path in the knee joint. Figure 22 is a cross-sectional view showing the positional relationship between the medial collateral ligament (MCL) and the wire path in the knee joint. Figures 23(a) and 23(b) are a front view and a rear view showing the fitted state of a modified example of the fourth embodiment.

[0024] Embodiments of this disclosure will be described below with reference to the drawings. In the description of the drawings, the same elements will be denoted by the same reference numerals, and redundant descriptions will be omitted. The dimensional ratios in the drawings may be partially exaggerated for the sake of explanation and may not necessarily correspond to the actual product.

[0025] Referring to Figures 1 to 5(b), the joint protection orthosis 1 according to the first embodiment will be described. The joint protection orthosis 1 is an athletic arm support worn on the arm by the wearer when performing sports that require arm movements. As shown in Figures 1, 2, and 6, the joint protection orthosis 1 comprises a tubular main body portion 10 made of an elastic fabric containing polyurethane yarn, for example. The elastic fabric is not particularly limited as long as it is an elastic fabric, but may be, for example, 2-way tricot, power net, bare jersey, bare smooth, etc. The main body portion 10 has a size and shape that fits the size of the wearer's arm. The main body portion 10 includes an annular proximal end 10a having a relatively large diameter (inner diameter when tubular) and an annular distal end 10b having a relatively small diameter (inner diameter when tubular). As shown in Figures 1 and 2, the main body portion 10 has a tapered shape with a certain incline between the proximal end 10a and the distal end 10b.

[0026] The joint protection brace 1 is worn, for example, by a baseball player. For instance, a left-handed batter would wear the joint protection brace 1 on their right arm. Each figure shows the joint protection brace 1 for the right arm. The joint protection brace 1 suppresses the load on the elbow ligaments caused by the elbow joint being fully extended during movement (for example, when batting, i.e., when swinging a bat). (Note that if the wearer is a right-handed batter, a joint protection brace with the opposite structure (a mirror image structure) to the joint protection brace 1 shown in each figure will be applied to the wearer's left arm.) The main body 10 is fitted to cover the upper arm, elbow, forearm, and wrist of the wearer (see Figure 6). The proximal end 10a is located near the center of the wearer's upper arm or slightly closer to the shoulder. The distal end 10b is located near the wearer's wrist.

[0027] The main body 10 is attached to the wearer's arm with a predetermined compression. The joint protection orthosis 1 can be described as compression wear based on the compression achieved by the main body 10. As shown in Figures 1, 2, and 3, the main body 10 has, for example, two non-tightening portions 11 extending in the longitudinal direction, and a first tightening portion 12 and a second tightening portion 13 positioned between these non-tightening portions 11. One non-tightening portion 11 extends longitudinally to cover the cubital fossa FA (see also Figure 6), and the other non-tightening portion 11 extends longitudinally to cover the opposite side (near the joint Q between the ulna and the humerus). The first tightening portion 12 extends longitudinally along the ulna. The second tightening portion 13 extends longitudinally along the radius. Each of the first and second tightening sections 12 and 13 extends, for example, from the proximal end 10a to the distal end 10b. Each of the first and second tightening sections 12 and 13 is formed by overlapping and joining another fabric to a non-tightening section 11, which is made of a highly elastic main fabric. As the fabric for forming each tightening section, for example, a power net made of a blend of nylon and polyurethane is used. The elasticity of each of the first and second tightening sections 12 and 13 is less than the elasticity of the non-tightening section 11. That is, each of the first and second tightening sections 12 and 13 is a non-stretchable section.

[0028] The main body portion 10 further has a proximal end tightening portion 17 that extends around the entire circumference near the proximal end 10a. For example, a belt-shaped member 19 is provided around the entire circumference on the back side 10d (skin side) of the main body portion 10, thereby forming a proximal end tightening portion 17 with a double fabric structure. The belt-shaped member 19 is a band-shaped member that encircles the proximal end 10a portion and is connected to the main body portion 10. The proximal end tightening portion 17 ensures that the main body portion 10 is in close contact with the wearer's upper arm, preventing the joint protection orthosis 1 from slipping on the upper arm. The configuration of the main body portion 10 in the joint protection orthosis 1 can be changed as appropriate. The first tightening portion 12 and the second tightening portion 13 may be omitted. Another tightening portion may be provided. On the back side (skin side) of the proximal end tightening portion 17, an appropriate anti-slip material 18 is provided that passes through the center of the belt-shaped member 19. The anti-slip material 18 is an elongated member that extends in the circumferential direction and is provided around the entire circumference (in a ring shape).

[0029] The joint protection orthosis 1 comprises an inner wire 20 and an outer wire 30, which are two wires (linear members) provided to pass along predetermined paths along the main body 10. The inner wire 20 and the outer wire 30 are each positioned on the back surface 10d side of the main body 10 according to the paths described later. The inner wire 20 and the outer wire 30 are, for example, linear members made of resin or metal with a diameter of less than 2 mm (for example, about 1 mm). As shown in Figures 4(a) and 5(a), a plurality of guide parts 60 are fixed to the back surface 10d side of the main body 10 by adhesive or the like, to guide the inner wire 20 and the outer wire 30 according to their respective paths. Each guide part 60 has a tubular shape through which the wires pass. For example, each part of the inner wire 20 and the outer wire 30 is passed through the insertion space 61 of each flat tubular guide part 60 (see Figures 4(b) and 5(b)). Each guide section 60 guides the inner wire 20 and the outer wire 30, respectively. By defining (regulating) their positions with the guide sections 60, the inner wire 20 and the outer wire 30 each follow a predetermined path.

[0030] The guide portion 60 may be a tubularly formed member, but it may also have a structure as shown in Figures 7(a) and 7(b). As shown in Figure 7(a), both ends of the fabric are fixed to the back surface 10d of the main body 10, forming the guide portion 60A. The inner wire 20 is passed through the insertion space 61 between the fabric (guide portion 60A) and the main body 10. As shown in Figure 7(b), the guide portion 60A for passing the outer wire 30 can have a similar structure. Furthermore, although not shown in the illustration, a long piece of fabric may be folded in half in the width direction, and the first and second ends in the width direction (circumferential direction) may be integrated with the main body by adhesive or sewing. In the above various structures for the guide portions 60 and 60A, the insertion space only needs to be large enough for each wire to pass through.

[0031] As shown in Figures 1, 3, and 8, the internal wire 20 includes a first long portion 21 that passes over the cubital fossa FA at the elbow joint and a second long portion 22 that passes near the medial collateral ligament UCL at the elbow joint when worn. The first long portion 21 can also be called the "internal long portion," and the second long portion 22 can also be called the "lateral long portion." As shown in Figures 1 and 3, the portion between the first long portion 21 and the second long portion 22 is hooked onto the distal hook 52 near the distal end 10b and folded back. A proximal hook 44 is fixed to the main body portion 10 near the proximal end 10a. The second long portion 22 is further hooked onto the proximal hook 44, and the proximal transverse portion 23 that follows the second long portion 22 extends circumferentially over the proximal end tightening portion 17. In Figure 3, the unfolded view shows the main body portion 10 laid flat before being formed into a cylindrical shape, and the joining lines 10La and 10Lb are shown. The joining lines 10La and 10Lb are joined by sewing or other means to form the cylindrical main body portion 10.

[0032] The internal wire 20 has a first end and a second end connected to the first adjuster 42, forming a loop. The first end is the end of the first long portion 21, and the second end is the end of the proximal transverse portion 23. In other words, the internal wire 20 has an elongated triangular shape with the distal hook 52 as its apex. As shown in Figure 3, with the main body 10 laid flat, the first long portion 21, the second long portion 22, and the proximal transverse portion 23 each extend in a straight line. That is, with the main body 10 laid flat, the guide portion 60 that guides the first long portion 21, the second long portion 22, and the proximal transverse portion 23 each extend in a straight line. The first long portion 21 and the second long portion 22 have a V-shape with the distal hook 52 as their apex. Note that, as shown in Figure 4(a), the guide portion 60 that guides the proximal transverse portion 23 may be omitted. The proximal transverse portion 23 passes through, for example, the space between the main body portion 10 and the belt-shaped member 19. In other words, the proximal transverse portion 23 is sandwiched between the main body portion 10 and the belt-shaped member 19. The proximal transverse portion 23 may also be exposed on the surface 10c side of the main body portion 10.

[0033] The outer wire 30 includes a third long portion 31 and a fourth long portion 32 that pass outside the first long portion 21 of the inner wire 20. The portion between the third long portion 31 and the fourth long portion 32 is hooked onto the distal hook 53 near the distal end 10b and folded back. The outer wire 30 further includes a proximal circumferential portion 33 that extends circumferentially near the proximal end 10a. A proximal hook 45 is fixed to the main body portion 10 near the proximal end 10a. The fourth long portion 32 is further hooked onto the proximal hook 45, and the proximal circumferential portion 33 following the fourth long portion 32 extends circumferentially over the proximal end tightening portion 17.

[0034] The outer wire 30 has a first end and a second end connected to the second adjuster 43, forming a loop. The first end is the end of the third long portion 31, and the second end is the end of the proximal circumferential portion 33. In other words, the outer wire 30 has a V-shape with the distal hook 53 as its apex. As shown in Figure 3, with the main body 10 laid flat, the third long portion 31, the fourth long portion 32, and the proximal circumferential portion 33 each extend in a straight line. That is, with the main body 10 laid flat, the guide portion 60 that guides the third long portion 31, the fourth long portion 32, and the proximal circumferential portion 33 each extend in a straight line. The fourth long portion 32 extends so as to cross the connecting lines 10La and 10Lb. Note that, as shown in Figures 4(a) and 5(a), the guide portion 60 that guides the proximal circumferential portion 33 may be omitted. The proximal circumferential portion 33, like the proximal transverse portion 23, passes through the space between, for example, the main body portion 10 and the belt-shaped member 19. In other words, the proximal circumferential portion 33 is sandwiched between the main body portion 10 and the belt-shaped member 19. The proximal circumferential portion 33 may also be exposed on the surface 10c side of the main body portion 10.

[0035] As shown in Figures 1 and 3, the first adjuster 42 and the second adjuster 43 are fixed to the surface 10c of the main body 10. The first adjuster 42 is mounted on the proximal end tightening portion 17, for example, at a corner of the first tightening portion 12 near the proximal end 10a. The second adjuster 43 is mounted on the proximal end tightening portion 17, for example, at a corner of the non-tightening portion 11 adjacent to the above corner. The second adjuster 43 is mounted closer to the proximal end 10a (near the proximal end 10a) than the first adjuster 42. As shown in Figures 2 and 3, the proximal hook 44 for the inner wire 20 is mounted circumferentially adjacent to the first adjuster 42. The proximal hook 45 for the outer wire 30 is mounted closer to the proximal end 10a (near the proximal end 10a) than the proximal hook 44.

[0036] As shown in Figure 3, the proximal transverse portion 23 extending between the first adjuster 42 and the proximal hook 44 is parallel to the proximal end 10a. The proximal circumferential portion 33 extending between the second adjuster 43 and the proximal hook 45 is parallel to the proximal end 10a. The proximal circumferential portion 33 is also parallel to the proximal transverse portion 23 and passes closer to the proximal end 10a than the proximal transverse portion 23. In other words, the proximal circumferential portion 33 is positioned between the proximal end 10a and the proximal transverse portion 23. The proximal circumferential portion 33 passes through a path that avoids the first adjuster 42 and the proximal hook 44 (directly beside them).

[0037] The circumferential length of the proximal transverse portion 23 is, for example, about one-quarter of the total circumference of the proximal end tightening portion 17. Preferably, the circumferential length of the proximal transverse portion 23 is, for example, less than half of the total circumference of the proximal end tightening portion 17. The proximal transverse portion 23 should have a V-shape formed by the first long portion 21 and the second long portion 22, and should be long enough to position the medial collateral ligament (UCL) between the first long portion 21 and the second long portion 22 in the circumferential direction. The proximal transverse portion 23 may be short. That is, the triangle formed by the internal wire 20 may be thin. Considering the "arrangement of the medial collateral ligament (UCL) between the V-shape" and the "arrangement of the first long portion 21 on the cubital fossa (FA)" described above, the positions of the first long portion 21 and the second long portion 22 on the main body 10, that is, on the wearer's arm (see also Figure 6), are determined.

[0038] The circumferential length of the proximal circumferential portion 33 is, for example, about three-quarters of the total circumference of the proximal end tightening portion 17. Preferably, the circumferential length of the proximal circumferential portion 33 is, for example, more than half of the total circumference of the proximal end tightening portion 17. The proximal circumferential portion 33 contributes to tightening the upper arm. The proximal circumferential portion 33 works in cooperation with the proximal end tightening portion 17 to tighten the upper arm, thereby preventing the tubular end, including the proximal end 10a, from slipping down.

[0039] Known devices may be used as the first adjuster 42 and the second adjuster 43. As shown in Figure 1, the first adjuster 42 and the second adjuster 43 are identical resin devices. The first adjuster 42 includes, for example, a rectangular thin plate-shaped base portion 42a and a dial portion 42b mounted on the base portion 42a and rotated by the wearer. A shaft (not shown) is integrated with the dial portion 42b, and the ends of the first elongated portion 21 and the proximal transverse portion 23 are wrapped around this shaft. The second adjuster 43 includes, for example, a rectangular thin plate-shaped base portion 43a and a dial portion 43b mounted on the base portion 43a and rotated by the wearer. A shaft (not shown) is integrated with the dial portion 43b, and the ends of the third elongated portion 31 and the proximal circumferential portion 33 are wrapped around this shaft. These first adjuster 42 and second adjuster 43 are arranged on the surface 10c of the main body portion 10. Base portions 42a and 43a are fixed to the surface 10c at predetermined positions on the surface 10c by adhesive or the like. Around these adjusters, the inner wire 20 and outer wire 30 each move toward the back surface 10d side, so the main body portion 10 is provided with a number of small wire holes h (see Figures 1, 4(a), and 5(a)).

[0040] The first adjuster 42 allows the wearer to rotate the dial portion 42b in one direction (tightening direction), thereby winding the inner wire 20 onto the shaft. The effective length of the inner wire 20 (length along the back surface 10d of the main body portion 10) is reduced, and the tension of the inner wire 20 increases. Also, by lifting the dial portion 42b (pulling it up so that it floats away from the base portion 42a), the constant tension on the inner wire 20 is released all at once, and the inner wire 20 loosens. The function of the second adjuster 43 is the same as that of the first adjuster 42, so its explanation is omitted.

[0041] The dial portion may be any other suitable knob having a different configuration than described above. A mechanism may be employed in which the effective length of each wire (length along the back surface 10d of the main body 10) is increased and the tension of each wire is reduced when the dial portion or knob is rotated in the opposite direction.

[0042] Known devices may be used as the proximal hooks 44 and 45. As shown in Figure 2, the proximal hooks 44 and 45 are identical resin devices. The proximal hook 44 includes, for example, a rectangular thin plate-shaped base portion 44a and a hook body 44b mounted on the base portion 44a. The inner wire 20 is hooked onto the hook body 44b. The proximal hook 45 includes, for example, a rectangular thin plate-shaped base portion 45a and a hook body 45b mounted on the base portion 45a. The outer wire 30 is hooked onto the hook body 45b. These proximal hooks 44 and 45 are the direction-changing parts for each wire. The proximal hooks 44 and 45 are arranged on the surface 10c of the main body portion 10. The base portions 44a and 45a are fixed to the surface 10c at predetermined positions on the surface 10c by adhesive or the like. Around these hooks, the inner wire 20 and the outer wire 30 each move toward the back surface 10d side, so the main body 10 is provided with a number of small wire holes h.

[0043] As shown in FIGS. 1 and 2, a belt 15 extending in the circumferential direction to increase the compression pressure applied to the wrist is provided near the distal end 10b of the main body 10. As shown in FIG. 1, the aforementioned distal hook 52 and distal hook 53 are fixed to the surface 10c of the main body 10. The distal hook 52 is a device for folding back the first elongated portion 21 and the second elongated portion 22 of the inner wire 20 extending in the longitudinal direction of the main body 10 near the distal end 10b. The distal hook 52 includes a hook body 52b (see FIG. 3), and the inner wire 20 is hooked on the hook body 52b. The distal hook 53 is a device for folding back the third elongated portion 31 and the fourth elongated portion 32 of the outer wire 30 extending in the longitudinal direction of the main body 10 near the distal end 10b. The distal hook 53 includes a hook body 53b (see FIG. 3), and the outer wire 30 is hooked on the hook body 53b. These distal hooks 52 and 53 are direction changing portions for the respective wires. Note that illustration of the belt 15 is omitted in the developed view of FIG. 3. This point (omission of illustration of the belt 15) also applies to other developed views showing each embodiment and each modified example described in the present specification.

[0044] The distal hook 52 and the distal hook 53 are adjacent to each other in the circumferential direction. The distal hook 52 and the distal hook 53 are close to each other and attached onto a common rectangular plate-shaped base 55. The common base 55 is fixed to the surface 10c at a predetermined position on the surface 10c (the inner side of the wrist, that is, the surface where the pulse is felt) by adhesion or the like. In the present embodiment, the distal hook 52 and the distal hook 53 are integrated with the belt 15. For example, the distal hook 52 and the distal hook 53 are fixed onto a proximal end portion (not shown) of the belt 15, and by winding and fixing the belt 15 one or more turns, the distal hook 52 and the distal hook 53 are covered by the belt 15 and brought into a hidden state (see FIG. 1). Around these hooks, since each of the inner wire 20 and the outer wire 30 transitions to the back surface 10d side, a plurality of small wire holes h are provided in the main body 10 (at positions separated from the belt 15).

[0045] A belt-shaped member 19 may be provided on the surface 10c side (outer surface side) of the main body 10 to form a proximal end tightening portion 17 with a double fabric structure. In that case, the first adjuster 42, the second adjuster 43, the proximal hook 44, and the proximal hook 45 are provided on the surface of the belt-shaped member 19 (proximal end tightening portion 17). Near the distal end 10b, an appropriate anti-slip material 18 may be provided on the back surface 10d side (skin side).

[0046] In the joint protection orthosis 1 having the above configuration, each guide portion 60 provides an insertion space 61 (guide space) for each wire. Each guide portion 60 positions each wire on the back surface 10d of the main body portion 10 (defines the route of each wire). In the joint protection orthosis 1, the route of the inner wire 20 is a route along the wearer's ulna and extends longitudinally along the arm. The route of the outer wire 30 is a route along the wearer's radius and extends longitudinally along the arm, and further extends circumferentially in the upper arm area of ​​the wearer.

[0047] More specifically, the path of the internal wire 20 has several parts. The first long portion 21 extends from a fixed end fixed to the first adjuster 42, passing near the inner surface of the elbow joint, to the tip of the portion of the main body 10 that covers the forearm (i.e., the distal end 10b), i.e., near the wearer's wrist. The distal hook 52 is located near the wearer's wrist and causes the internal wire 20 to turn (fold back) in a U-shape or V-shape. The second long portion 22 passes over or near the medial collateral ligament UCL of the wearer and changes direction at the proximal hook 44. The fixed end of the proximal transverse portion 23 is fixed to the first adjuster 42. As shown in Figure 9, when viewed from a direction perpendicular to the epidermis near the medial collateral ligament UCL, the medial collateral ligament UCL is located between the first long portion 21 and the second long portion 22.

[0048] When the joint protection orthosis 1 is used (when worn), the wearer passes their arm through the main body 10 with each wire loosened. A portion of the hand beyond the wrist protrudes from the distal end 10b of the main body 10 and is exposed. The wearer rotates the dial portion 42b and the dial portion 43b in one direction to reduce the effective length of each wire. This increases the tension of each of the inner wire 20 and the outer wire 30. Each wire has sufficient strength to prevent breaking when tension is applied thereto by the first adjuster 42 and the second adjuster 43.

[0049] The first elongated portion 21 of the inner wire 20 prevents the wearer's elbow from becoming fully extended during the wearer's exercise movement. The second elongated portion 22 of the inner wire 20 cooperates with the first elongated portion 21 to protect the wearer's ulnar collateral ligament (UCL) during the wearer's exercise movement. As shown in FIG. 3, the first elongated portion 21 and the second elongated portion 22 are arranged so as to approach each other as they get closer to the distal end 10b. In other words, the first elongated portion 21 and the second elongated portion 22 are arranged so as to separate from each other as they get closer to the proximal end 10a. At the portion corresponding to the elbow joint, as shown in FIGS. 8 and 9, the ulnar collateral ligament UCL is positioned between the first elongated portion 21 and the second elongated portion 22. The "clamping of the ulnar collateral ligament UCL" achieved by such an arrangement contributes to the protection of the ulnar collateral ligament UCL. The first elongated portion 21 and the second elongated portion 22 reduce valgus stress during the wearer's exercise movement. The joint protection orthosis 1 reduces the load applied to the wearer's elbow during the wearer's exercise movement. In addition, the outer wire 30 supports the radial side. The third elongated portion 31 and the fourth elongated portion 32 of the outer wire 30 reduce varus stress (that is, the stress applied to the left and right when the joint is fully extended). The proximal circumferential portion 33 of the outer wire 30 extends over a part in the circumferential direction of the wearer's upper arm, prevents displacement of the main body portion 10 (proximal end tightening portion 17) at the upper arm, and maintains the normal wearing state of the joint protection orthosis 1.

[0050] When the use of the joint protection orthosis 1 is completed, the wearer lifts each dial, whereby the constant tension applied to each wire is released all at once, and each wire is loosened. This allows the wearer to pull the joint protection orthosis 1 off the arm.

[0051] In the joint protection orthosis 1 of this embodiment, the first long portion 21 of the internal wire 20 passes over the cubital fossa FA of the elbow joint. The second long portion 22 of the internal wire 20 passes over or near the medial collateral ligament UCL of the elbow joint. The first long portion 21 and the second long portion 22 are positioned to move closer to each other as they approach the distal end 10b. When the wearer puts on the joint protection orthosis 1 and winds up the internal wire 20 using the first adjuster 42, the tension in both the first long portion 21 and the second long portion 22 increases. The first long portion 21 and the second long portion 22 do not intersect but extend in a direction that causes them to merge at the distal end 10b. As a result, the flexion and extension of the elbow joint are not hindered, and the elbow joint can be protected in the extended position using the "lever principle". In the "lever principle," the length of the lever (i.e., the moment arm) is increased, allowing the joint to be protected with less force. In addition, the tension of the first long portion 21 prevents the elbow joint from fully extending. The medial collateral ligament (UCL), which is susceptible to damage from the load during movement, is positioned between the first long portion 21 and the second long portion 22 (see Figure 9). Therefore, the medial collateral ligament (UCL) is protected, and damage to the medial collateral ligament (UCL) can be suppressed. As described above, the joint protection orthosis 1 allows for elbow joint movement without excessive restriction, and suppresses the load on the elbow joint, especially the medial collateral ligament (UCL), caused by the elbow joint fully extending (hyperextension).

[0052] The inner wire 20, which is folded back near the distal end 10b, applies a common tension to the first long portion 21 and the second long portion 22, which are positioned to sandwich the medial collateral ligament (UCL). Therefore, the medial collateral ligament (UCL) can be effectively protected.

[0053] With the first and second ends fixed to the first adjuster 42, the inner wire 20 forms a loop, and since there are no ends to the wire, its durability is enhanced.

[0054] In the outer wire 30, the tension of the third long portion 31 and the fourth long portion 32 prevents the elbow joint from fully extending. A common tension acts on the third and fourth long portions, protecting the lateral collateral ligament. The proximal circumferential portion 33 prevents the main body portion 10 from slipping in the upper arm.

[0055] The belt 15 prevents the main body 10 from shifting at the wrist or ankle.

[0056] The distal hooks 52 and 53 are integrated with the belt 15. This prevents the main body 10 from shifting at the wrist or ankle even when the inner wire 20 is being wound up (tightened) by the first adjuster 42. The same effect is also achieved when the outer wire 30 is being wound up (tightened) by the second adjuster 43.

[0057] The main body 10 is designed to cover the upper arm, elbow, forearm, and wrist area of ​​the human body. The first long portion 21 of the internal wire 20 passes over the cubital fossa FA at the elbow joint, and the second long portion 22 of the internal wire 20 passes over or near the medial collateral ligament UCL at the elbow joint. This configuration allows for sufficient movement of the elbow joint without excessive restriction, and suppresses the load on the elbow joint, particularly the medial collateral ligament UCL, caused by full extension of the elbow joint.

[0058] In the joint protection orthosis 1, as shown in Figures 3 and 6, four elongated sections extend longitudinally without intersecting. Aside from these, there are no other elongated sections (parts tightened by wires), and compression is applied to the arm solely by the main body 10. Therefore, it does not excessively restrict the movement of the elbow joint.

[0059] The tension can be released with a single touch, making it easy to remove the joint protection device 1 from the arm.

[0060] With the guide section 60 fixed to the back surface 10d of the main body 10, the paths of the inner wire 20 and outer wire 30 are not exposed. Multiple wire holes h are inconspicuous, and most of the joint protection system using wires is hidden. At first glance, it is no different from a conventional arm support, and the joint protection orthosis 1 has excellent appearance. When the joint protection orthosis 1 is worn on the skin, the guide section 60 touches the wearer's skin. However, since the tubular guide section 60 covers the inner wire 20 and outer wire 30, the wires do not injure the skin when being wound up. On the other hand, the first adjuster 42 and the second adjuster 43 are provided on the surface 10c, making them easy to operate and adjust. Strength-requiring components such as the proximal hook 44, proximal hook 45, distal hook 52, and distal hook 53 are arranged on the surface 10c side. Therefore, the comfort of wearing the joint protection orthosis 1 is not hindered.

[0061] Some modifications of the first embodiment will be described. For example, as shown in Figure 10, an outer wire 30A may be provided, with the first end fixed to the second adjuster 43 and the second end fixed to a fastener 46 located at a different position from the second adjuster 43. In this case, the end of the proximal circumferential portion 33A is fixed to the fastener 46. The configuration of the fastener 46 may be the same as that described later with reference to Figure 14(a), etc. In this specification, the "fastener" may also be called an "anchor" for fixing the end of the wire. The outer wire 30A is non-loop-shaped. The proximal circumferential portion 33A of the joint protection orthosis 1A is shorter than the proximal circumferential portion 33 of the joint protection orthosis 1, but it exerts a certain tightening effect and prevents the main body portion 10 from slipping in the upper arm. The joint protection orthosis 1A also provides the same action and effect as the joint protection orthosis 1.

[0062] As shown in Figure 11, a configuration may be adopted in which the end of the second long portion 22B and the end of the proximal circumferential portion 33B are fixed to a fixing device 47 positioned at a location different from both the first adjusting device 42 and the second adjusting device 43. Both the inner wire 20B and the outer wire 30B are non-loop shaped. The fixing device 47 is a common anchor provided for the two wires. The configuration of the fixing device 47 may be the same as that described later with reference to Figure 14(a), etc. The joint protection orthosis 1B also produces the same action and effect as the joint protection orthosis 1.

[0063] Next, a joint protection orthosis according to the second embodiment of this disclosure will be described. The difference between the joint protection orthosis 1C shown in Figure 12 and the joint protection orthosis 1 of the above embodiment is that, instead of the outer wire 30 having a third elongated portion 31 and a fourth elongated portion 32, it is equipped with a proximal circumferential wire 70 that has no elongated portion and extends only in the circumferential direction near the proximal end 10a. For example, a wearer who is a right-handed pitcher wears the joint protection orthosis 1C on their right arm. Figure 12 shows the joint protection orthosis 1C for the right arm. The joint protection orthosis 1C suppresses the load on the elbow ligaments caused by the elbow joint being fully extended during movement (for example, when pitching, i.e., when swinging the arm to throw a ball). (Note that if the wearer is a left-handed pitcher, a joint protection orthosis having the opposite structure (a mirror image structure) to the joint protection orthosis 1C will be applied to the wearer's left arm.)

[0064] The proximal circumferential wire 70 has a first circumferential portion 71 and a second circumferential portion 72. The first circumferential portion 71 and the second circumferential portion 72 extend parallel to each other in the region between the proximal circumferential portion 33 and the proximal end 10a. The ends of the first circumferential portion 71 and the ends of the second circumferential portion 72 are connected and fixed to the second adjuster 43. The portion between the first circumferential portion 71 and the second circumferential portion 72 is folded back at the proximal hook 45.

[0065] The joint protection brace 1C of the second embodiment also allows for elbow joint movement without excessive restriction, and suppresses the load on the elbow joint, particularly the medial collateral ligament (UCL), caused by full extension of the elbow joint. Furthermore, the proximal circumferential wire 70 prevents the tubular end, including the proximal end 10a, from slipping down by tightening the upper arm. Since the proximal circumferential wire 70 does not extend in the longitudinal direction, it does not hinder the movement of the elbow joint during exercise. In other words, the operation of the second adjuster 43 is used independently only for tightening the upper arm, allowing for adjustment of the fit according to the wearer's preference. This allows for free movement of the entire arm and leg while protecting the medial collateral ligament (UCL). These effects are particularly pronounced for baseball pitchers.

[0066] A modification of the second embodiment will now be described. For example, as shown in Figure 13, a configuration with a non-loop-shaped inner wire 20D may be adopted. The first end of the inner wire 20D is fixed to the first adjuster 42, and the second end is fixed to a fastener 48 located at a different position from the first adjuster 42. There is no proximal transverse portion 23. The inner wire 20D is non-loop-shaped.

[0067] As shown in Figures 14(a) and 15, the end of the second long portion 22, which is the second end, is fixed to a fastener 48 consisting of two members: an engaging device 49 and a crimping portion 51. The engaging device 49 includes a base portion 49a fixed to the surface 10c of the main body portion 10 by adhesive or the like, and an eyelet portion 49b rising from the base portion 49a. The end of the second long portion 22 is inserted through the eyelet portion 49b, and the second long portion 22 is fixed to the crimping portion 51 together with the folded portion, thereby fixing the end of the second long portion 22 onto the main body portion 10. The joint protection orthosis 1D also provides the same function and effect as the joint protection orthosis 1C. With a configuration in which the internal wire 20D is not loop-shaped, the overall length of the wire can be reduced. As a result, tension is not applied to areas other than the protected portion, and the degree of freedom of the arm during movement is increased.

[0068] The V-shaped inner wire 20D is realized by the structure shown in Figure 14(a), for example, but other configurations are also possible. For example, as shown in Figure 14(b), two wires, a first wire 24 and a second wire 25, may be used. The first wire 24 and the second wire 25 are hooked onto a common distal hook 52 and folded back to form the V-shaped inner wire 20DA. The first ends of the first wire 24 and the second wire 25 are bundled together and connected and fixed to the first adjuster 42, and the second ends of the first wire 24 and the second wire 25 are fixed by a fixing device 48. With this configuration, the inner wire 20DA has the strength of a double wire. In addition, the first long portion 21 and the second long portion 22 are less likely to dig into the wearer's arm.

[0069] For example, as shown in Figure 14(c), a configuration having a double wire structure similar to the inner wire 20DA may be adopted, using a single loop-shaped wire 26. When the wire 26 is bundled, its first end is connected and fixed to the first adjuster 42, and its second end is fixed by the fastener 48. With this configuration, the inner wire 20DB has the strength of a double wire. In addition, the first long portion 21 and the second long portion 22 are less likely to dig into the wearer's arm.

[0070] Instead of the proximal circumferential wire 70 shown in Figure 12, a configuration in which the proximal circumferential wire 70E wraps around the entire circumference of the proximal end 10a may be adopted, as shown in Figure 16. In this case, the starting point 71a of the first circumferential portion 71 and the starting point 72a of the second circumferential portion 72 are connected to the second adjuster 43, and the opposite ends of these starting points 71a and 72a are folded back at the second adjuster 43. The U-shaped folded portion 73 is hooked onto the circular dial base portion of the second adjuster 43. The folded portion 73 passes under the starting point 71a of the first circumferential portion 71 and the starting point 72a of the second circumferential portion 72, preventing the folded portion 73 from detaching (coming off) from the dial base portion. This configuration is the same as the proximal circumferential wire 70F of the third embodiment shown in Figure 19.

[0071] The joint protection orthosis 1E provides the same function and effect as the joint protection orthoses 1C and 1D. The operation of the second adjuster 43 is used independently only for tightening the upper arm, allowing the wearer to adjust the fit according to their preference. In the joint protection orthosis 1E, the internal wire 20 may be replaced with a configuration similar to that of the internal wire 20D (Figure 13). In that case, the configuration examples shown in Figures 14(a) to 14(c) may be adopted.

[0072] In the non-loop-shaped inner wire 20D shown in Figure 13, unlike the configuration examples shown in Figures 14(a) to 14(c), as shown in Figure 17, the first long portion 21 and the second long portion 22 may consist of a single wire 26 and be folded back at the eyelet portion 49b of the engaging device 49.

[0073] Next, a joint protection orthosis according to the third embodiment will be described. The difference between the joint protection orthosis 1F shown in Figure 18 and the joint protection orthosis 1 of the above embodiment is that a non-loop inner wire 20F (having the same configuration as the inner wire 20D shown in Figure 13), which consists of a first long portion 21 and a second long portion 22 and exhibits a V-shape with the distal hook 52 at its apex, and a non-loop outer wire 30F, which consists of a third long portion 31 and a fourth long portion 32 and exhibits a V-shape with the distal hook 53 at its apex, share a central first adjuster 42, and the joint protection orthosis 1F is equipped with a proximal circumferential wire 70F that extends only in the circumferential direction near the proximal end 10a.

[0074] Note that in the unfolded view shown in Figure 18, the positions of the connecting lines 10La and 10Lb differ from those in the other unfolded views referenced in the above description. However, the cylindrical main body 10 of the finished joint protection orthosis 1F is the same as the main body 10 in each of the embodiments and modified examples described above, and the positions of the connecting lines 10La and 10Lb do not affect its function.

[0075] Joint protection brace 1F is worn, for example, by a baseball player. Like joint protection brace 1 (see Figure 3), joint protection brace 1F is worn on the right arm by, for example, a left-handed batter.

[0076] The first end of the first long portion 21 is fixed to the shaft of the dial portion 42b by locking or binding, and the second end of the second long portion 22 is fixed to the fastener 48 (fastener for the inner wire). The first end of the third long portion 31 is also fixed to the shaft of the dial portion 42b by locking or binding, and the second end of the fourth long portion 32 is fixed to the fastener 55 (fastener for the outer wire). The inner wire 20F does not have a proximal transverse portion 23, and there is an open space between the first adjuster 42 and the fastener 48. The outer wire 30F does not have a proximal circumferential portion 33, and there is an open space between the first adjuster 42 and the fastener 55. The configuration of the fastener 55 is the same as that of the fastener 48.

[0077] The inner wire 20F and the outer wire 30F are in a non-loop shape. The inner wire 20F and the outer wire 30F form a W-shaped (zigzag shape in the longitudinal direction) joint protection wire. Fixing devices 48 and 55 form both ends of the W-shaped joint protection wire. The proximal circumferential wire 70F is around the entire circumference and has the same configuration as the proximal circumferential wire 70E (see Figure 16).

[0078] A proximal circumferential wire 70F crosses between the first adjuster 42 and the fixing device 48, and between the first adjuster 42 and the fixing device 55. The proximal circumferential wire 70F passes through the space between the main body 10 and the belt-shaped member 19, or through the surface 10c side of the main body 10, and is mechanically independent of the inner wire 20F and the outer wire 30F (they do not transmit tension to each other).

[0079] In the proximal circumferential wire 70F, the starting point 71a of the first circumferential portion 71 and the starting point 72a of the second circumferential portion 72 are connected to the second adjuster 43, and the opposite ends of these starting points 71a and 72a are folded back at the second adjuster 43. As shown in Figure 19, the U-shaped folded portion 73 is hooked onto the circular dial base portion 43c of the second adjuster 43. The folded portion 73 passes under the starting point 71a of the first circumferential portion 71 and the starting point 72a of the second circumferential portion 72, preventing the folded portion 73 from detaching (coming off) from the dial base portion 43c.

[0080] In the joint protection orthosis 1F, the tension of the inner wire 20F and the outer wire 30F can be adjusted simultaneously using the first adjustment tool 42, which is dedicated to adjusting the joint protection wire. In addition, the tension of the proximal circumferential wire 70F can be adjusted using the second adjustment tool 43, which is dedicated to tightening the upper arm. The tension adjustment of the wires in the longitudinal direction, i.e., the joint protection wires, and the tension adjustment of the tightening wires in the circumferential direction of the upper arm are performed separately.

[0081] The joint protection orthosis 1F of the third embodiment, like the joint protection orthosis 1, allows for elbow joint movement without excessive restriction and suppresses the load on the elbow joint, particularly the medial collateral ligament (UCL), caused by elbow hyperextension. A common tension acts between the first and second long portions, protecting the medial collateral ligament (UCL). A common tension also acts between the third and fourth long portions, protecting the lateral collateral ligament (UCL).

[0082] Furthermore, the inner wire 20F and outer wire 30F can be wound simultaneously with a single winding operation of the first adjuster 42, resulting in excellent operability. Since only one adjuster is needed for protecting both the inner and outer ligaments, the configuration is simplified. Also, the balance between the inner and outer ligaments is maintained. With the W-shaped joint protection wire, the overall length of the wire involved in ligament protection can be reduced. Tension is not applied to areas other than the protected area, increasing the degree of freedom of the arm (or leg) during movement.

[0083] The proximal circumferential wire 70F prevents the tubular end, including the proximal end 10a, from slipping down by tightening the upper arm. The operation of the second adjuster 43 is used independently only for tightening the upper arm, allowing the wearer to adjust the fit according to their preference.

[0084] Furthermore, instead of a W-shaped protective wire, a configuration with two V-shaped protective wires may be adopted. In that case, the V-shaped inner wire 20F and outer wire 30F are separated from each other and provided independently. The difference from the joint protection orthosis 1F shown in Figure 18 is that, for example, the first adjuster 42 is provided as a dedicated adjuster for the inner wire 20F, and another adjuster is provided in a position close to the first adjuster 42 as an adjuster for the outer wire 30F.

[0085] Next, a joint protection orthosis according to the fourth embodiment of this disclosure will be described. The joint protection orthosis 100 shown in Figures 20(a) and 20(b) is a lower body support (or tights or leg support) for exercise that is worn on the leg by the wearer when performing sports that require lower body movement. The main body portion 80 is made of the same material as the main body portion 10 in the above embodiment. The main body portion 80 is adapted to cover the area of ​​the human body from the thigh, knee, lower leg, and ankle.

[0086] The joint protection brace 100 comprises an internal knee wire 120 passing through the inside of the knee and an external knee wire 130 passing through the outside of the knee. The internal knee wire 120 is loop-shaped. Its first and second ends are connected to and fixed to a first adjuster 140 provided on the side of the waist. The first adjuster 140 is capable of winding up the internal knee wire 120. The internal knee wire 120 includes a first long portion 121 passing over the popliteal fossa FB at the knee joint and a second long portion 122 passing over or near the medial collateral ligament (MCL) at the knee joint. The first long portion 121 and the second long portion 122 are positioned to move closer to each other as they approach the distal end 80b. The portion between the first long portion 121 and the second long portion 122 is folded back at the distal hook 142.

[0087] The external knee wire 130 is loop-shaped. Its first and second ends are connected to and fixed to a second adjuster 150 provided on the lower back. The second adjuster 150 is capable of winding up the external knee wire 130. The external knee wire 130 includes a third long portion 131 that passes over the popliteal fossa FB at the knee joint and a fourth long portion 132 that passes over the lateral portion of the knee joint. The portion between the third long portion 131 and the fourth long portion 132 is folded back at the distal hook 143. The external knee wire 130 also includes a meandering buttock portion 133 that meanders in the lower back. The end of the buttock portion 133 is connected to and fixed to the second adjuster 150.

[0088] The first adjusting tool 140 and the second adjusting tool 150 have the same configuration as the first adjusting tool 42 and the second adjusting tool 43 in the above embodiment.

[0089] Figures 21 and 22 show the popliteal FB and patellar PT. As shown in Figures 21 and 22, when viewed from a direction perpendicular to the epidermis near the medial collateral ligament (MCL), the MCL is located between the first long portion 121 and the second long portion 122. This arrangement, which "pinches the MCL," contributes to the protection of the MCL. The joint protection orthosis 100 reduces the load on the wearer's knee during movement. The third long portion 131 and the fourth long portion 132 of the knee lateral wire 130 also prevent the wearer's knee from becoming fully extended during movement. The patellar PT is positioned between the second long portion 122 and the fourth long portion 132. In Figure 21, the first long portion 121 and the second long portion 122 pass along the front side (inside) of the leg, while the third long portion 131 passes along the opposite side (outside) of the leg.

[0090] According to the joint protection orthosis 100, the first long portion 121 of the intra-knee wire 120 passes over the popliteal fossa (FB) in the knee joint. The second long portion 122 of the intra-knee wire 120 passes over or near the medial collateral ligament (MCL) in the knee joint. The first long portion 121 and the second long portion 122 are positioned to move closer to each other as they approach the distal end 80b. When the wearer puts on the joint protection orthosis 100 and winds up the intra-knee wire 120 using the first adjuster 140, the tension in both the first long portion 121 and the second long portion 122 increases. The first long portion 121 and the second long portion 122 do not cross each other and extend in a direction that causes them to merge at the distal end 80b. As a result, the knee joint can be protected in the extended position by the "lever principle" without hindering flexion and extension of the knee joint. In the "lever principle," the length of the lever (i.e., the moment arm) becomes longer, allowing the joint to be protected with less force. Also, the tension of the first long portion 121 prevents the joint from fully extending. The medial collateral ligament (MCL), which is susceptible to damage from the load during movement, is positioned between the first long portion 121 and the second long portion 122 (see Figure 22). Therefore, the medial collateral ligament (MCL) is protected, and damage to the medial collateral ligament (MCL) can be suppressed. As a result, the joint protection orthosis 1 allows for knee joint movement without excessive restriction, and suppresses the load on the knee joint, especially the medial collateral ligament (MCL), caused by knee joint hyperextension. Furthermore, when the knee lateral wire 130 is wound using the second adjuster 150, the tension in the third long portion 131, the fourth long portion 132, and the hip serpentine portion 133 increases.

[0091] In addition, in the joint protection orthosis 100, the lower ends of the intra-knee wire 120 and the lateral-knee wire 130 are not folded back, and the lower ends of the first long portion 121, the second long portion 122, the third long portion 131, and the fourth long portion 132 may each terminate near the distal end 80b. In that case, the intra-knee wire 120 and the lateral-knee wire 130 are both in a non-loop shape. Fixing devices as shown in Figure 15 may be provided at each end.

[0092] As a modified version of the joint protection orthosis 100 shown in Figures 20(a) and 20(b), the intra-knee wire 120B and the lateral-knee wire 130B may each extend to the back of the ankle, as shown in Figures 23(a) and 23(b). This joint protection orthosis 100A also provides the same function and effect as the joint protection orthosis 100.

[0093] Although embodiments of the present disclosure have been described above, the present invention is not limited to the above embodiments. For example, in each embodiment, each guide part and each wire (linear member) may be attached to the surface side of the main body.

[0094] In the first and second embodiments described above, the first and second long portions of the inner wire are not limited to being folded back at their lower ends (the ends closer to the distal end 10b) to form a V-shape. The lower ends of the first and second long portions may each terminate near the distal end 10b. In that case, the inner wire 20 and the outer wire 30 are both in a non-loop shape. Fixing devices as shown in Figure 15 may be provided at each termination point.

[0095] The arm and leg joint protection braces described above are also suitable for various sports other than baseball. For example, the arm and leg joint protection braces may be used in tennis, basketball, volleyball, badminton, rugby, track and field (throwing events, etc.), judo, etc. The leg joint protection braces may also be used in soccer, track and field (track events, etc.), etc. The protective effect of the external wire on the ligaments on the outside of the joint, as well as the protective effect of the internal wire on the ligaments on the outside of the joint, are particularly effective in contact sports (sports involving contact with other players), including basketball and rugby.

[0096] 1, 1A, 1B, 1C, 1D, 1E, 1F... Joint protection orthosis, 10... Main body, 10a... Proximal end, 10b... Distal end, 15... Belt, 20, 20B, 20D, 20DA, 20DB... Internal wire, 21... First long section, 22... Second long section, 30, 30A, 30B... External wire, 31... Third long section, 32... Fourth long section, 33... Proximal circumferential section, 42... First adjuster, 43... Second adjuster, 44... Proximal hook, 45... Proximal hook, 48... Fixation device, 52... Distal hook, 53... Distal hook, 60... Guide section, 100, 100A... Joint protection orthosis, FA... Elbow fossa, FB... Popliteal fossa, MCL... Medial collateral ligament, UCL... Medial collateral ligament.

Claims

1. A joint protection orthosis comprising: a tubular main body made of a stretchable fabric and including a proximal end and a distal end; at least one wire provided to pass along a predetermined path along the main body; a guide portion having a tubular shape through which the wire passes, fixed to the main body according to the path, and guiding the wire; and an adjuster fixed to the surface of the main body, to which the end of the wire is connected, and capable of winding up the wire, wherein the wire includes a first long portion passing over the cubital fossa or popliteal fossa of the elbow joint or knee joint; and a second long portion passing over or near the medial collateral ligament of the elbow joint or knee joint, and the first long portion and the second long portion are arranged to move closer to each other as they approach the distal end.

2. The joint protection orthosis according to claim 1, wherein the wire includes a first long portion and a second long portion, and the portion between the first long portion and the second long portion has an inner wire that is folded back near the distal end.

3. The joint protection orthosis according to claim 2, wherein the wire includes a third and a fourth long portion that pass outside the first long portion, the portion between the third and fourth long portions is folded back near the distal end, and the outer wire further includes a proximal circumferential portion that extends circumferentially near the proximal end.

4. The joint protection orthosis according to claim 2, wherein the wire has a proximal circumferential wire that extends only in the circumferential direction near the proximal end.

5. The joint protection orthosis according to any one of claims 1 to 4, wherein a belt extending in the circumferential direction is provided near the distal end of the main body to increase compression at the wrist or ankle.

6. The joint protection orthosis according to claim 5, further comprising a hook fixed to the surface of the main body and for folding back the long portion of the wire extending in the longitudinal direction of the main body near the distal end, wherein the hook is integrated with the belt.

7. The joint protection orthosis according to any one of claims 1 to 4, wherein the main body is adapted to cover an area of ​​the human body from the upper arm, elbow, forearm, and wrist, the first long portion of the wire passes over the cubital fossa at the elbow joint, and the second long portion of the wire passes over or near the medial collateral ligament at the elbow joint.

8. The joint protection orthosis according to any one of claims 1 to 4, wherein the main body is adapted to cover an area of ​​the human body from the thigh, knee, lower leg, and ankle, the first long portion of the wire passes over the popliteal fossa of the knee joint, and the second long portion of the wire passes over or near the medial collateral ligament of the knee joint.

9. The joint protection orthosis according to any one of claims 1 to 4, wherein the guide portion is fixed to the back side of the main body portion according to the path.

10. The joint protection orthosis according to any one of claims 2 to 4, wherein the internal wire has a first end and a second end fixed to the adjuster and is in the shape of a loop.

11. The joint protection orthosis according to any one of claims 2 to 4, wherein the internal wire has a first end fixed to the adjuster and a second end fixed to a fastener located at a different position from the adjuster, and is in a non-loop shape.

12. The joint protection orthosis according to claim 2, wherein the wire includes a third and a fourth long portion that pass outside the first long portion, and the portion between the third and fourth long portions has an outer wire that is folded back near the distal end.

13. The joint protection orthosis according to claim 12, wherein the inner wire and the outer wire can be wound up by a common adjustment device.

14. The joint protection orthosis according to claim 12, wherein the outer wire has a first end fixed to the adjuster and a second end fixed to a fastener located at a different position from the adjuster, and is in a non-loop shape.

15. The joint protection orthosis according to claim 12, wherein the first end of the first long portion of the inner wire and the first end of the third long portion of the outer wire are fixed to a common adjustment device, the second end of the second long portion of the inner wire is fixed to an inner wire fixing device located at a different position from the adjustment device, the second end of the fourth long portion of the outer wire is fixed to an outer wire fixing device located at a different position from the adjustment device, and the inner wire and the outer wire are in a non-loop shape.

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