WO2008065701A1

WO2008065701A1 - Shoulder supporter

Info

Publication number: WO2008065701A1
Application number: PCT/JP2006/323607
Authority: WO
Inventors: Takemasa Kawahara
Original assignee: Sea Shell Co., Ltd.
Priority date: 2006-11-27
Filing date: 2006-11-27
Publication date: 2008-06-05
Also published as: JP4862197B2; JPWO2008065701A1

Abstract

[PROBLEMS] To provide a shoulder supporter which can externally support the rotator cuff and thus assist and promote its function to thereby prevent shoulder articular disorder and improve physical performance. [MEANS FOR SOLVING PROBLEMS] A shoulder supporter (1) having a fabric supporter body (2) to be attached to the site corresponding to the scapula in the back of the human body in the state where the periphery is stretched outward, wherein the periphery of the supporter body (2) is made of a material having a high elasticity (3) while the center thereof is made of another material having a low elasticity (4). In wearing, the material having a high elasticity (3) of the supporter body (2) contracts toward the material having a low elasticity (4) so as to promote the contraction of the teres minor muscle and interspinal muscle located at the site overlapping the material having a low elasticity (4).

Description

Specification

Shoulder supporter

Technical field

[0001] The present invention relates to a shoulder supporter capable of preventing shoulder joint disorders.

Background art

[0002] A number of shoulder joint disorders occur in athletes who repeatedly perform skeletal movements of the shoulder joint, such as baseball, volleyball, and throwing competitions. Representative shoulder joint disorders include rotator cuff injury, invinging syndrome, bursitis, supraspinatus tendonitis, biceps tendonitis, suprascapular nerve palsy, humeral epiphyseal disorder (Little League shoulder) ) And the like.

[0003] Conventional shoulder supporters used for the treatment and prevention of these shoulder joint disorders are muscles that move the shoulder joint by pressing the shoulder joint from the outside and fixing it or by limiting the range of motion. In other words, the load force s is not necessary (for example, Patent Document 1). Patent Document 1: Actual Kaihei 6- 44532

Disclosure of the invention

Problems to be solved by the invention

[0004] Here, a mechanism of occurrence of a shoulder joint disorder will be described by taking a baseball shoulder as an example. A field shoulder is also referred to as a throwing obstacle, and is an obstacle that occurs with a throwing motion. If the pitching action is divided into six stages: windup period, cocking period, acceleration period, release deceleration period, release period, and follow-throw period, obstacles occur at each stage except the windup period.

(1) During the cocking period, the external rotation of the shoulder is emphasized, and the deltoid, supraspina, subspinous, and pectoral muscles of the back of the shoulder contract, and the anterior joint capsule and subscapular muscle are stretched. This can cause frontal shoulder pain.

(2) During the acceleration period, the movement of the internal rotation of the shoulder is emphasized. In addition, when the arm moves forward, a load is applied to the inside of the elbow joint, which causes baseball elbow generation.

(3) During the release deceleration period, the shoulder internal rotation and forearm pronation are emphasized and the arm is swung forward, so that the muscles behind the shoulder joint are pulled while being contracted. Do. That Causes pain in the back of the shoulder. Sometimes the suprascapular nerve is compressed due to atrophy of the subspinous muscle.

(4) During the release period, the ball loses its hand strength and the arm movement is suddenly decelerated. At that time, since the weight of the ball disappears in an instant, the stress applied to the shoulder, elbow, wrist, etc. changes.

(5) During the follow-slow period, the arm swings out and the scapula abduction is emphasized. Also, the fingers may cause blood circulation disturbance due to centrifugal force.

[0005] Inbinment syndrome is a general term for shoulder hooking symptoms that occur in the acceleration phase.

When the shoulder joint is abducted more than 90 degrees, the humeral head collides with the acetabulum, acromioclavicular joint, inguinal process, inguinal acetabular ligament, etc., and the subacromial bursa or upper arm Biceps length Causes inflammation of the head tendon and damage of the supraspinatus tendon.

[0006] Little League shoulders are mainly caused by young cyclists who are repeatedly stressed by external to internal movements during the acceleration of throwing motion, resulting in the separation of the proximal humeral epiphyseal line. A type of fracture.

[0007] Although each of the above shoulder joint disorders has a slightly different cause, they are common in that they are caused by a decline in the function of the rotator cuff, which is the inner muscle of the shoulder joint. The rotator cuff is the small circular muscle (symbol 10 in Figure 4), supraspinatus (symbol 11 in Figure 5), subspinous muscle (symbol 12 in Figure 6), and subscapular muscle (symbol in Figure 7). 13), which play a role in ensuring the stability of the shoulder joint. When the function of the rotator cuff is reduced, during shoulder movement, the shoulder joint is pulled or separated from the movement of the upper limb, and the joint is always in an unstable state, colliding with other tissues Happens. Or another muscle tries to work hard to stabilize an unstable joint. As described above, problems occur in the shoulder joints when joint movements are performed without proper stability of the joints, or by irrational movements to compensate for instability.

[0008] The shoulder joint has a ball joint structure that tends to give priority to mobility at the expense of stability. Therefore, the rotator cuff has a function of generating centripetal force in the direction of the central axis of the joint just by moving the upper arm and stabilizing the humeral head in the glenoid. When an upward and forward centrifugal force is applied to the shoulder joint due to a throwing motion, etc., all four muscles of the rotator cuff tend to perform the above functions. The action of these muscle groups By pulling the humeral head backward and downward with respect to exercise, the humeral head is prevented from being displaced from the glenoid and the shoulder joint is stabilized.

[0009] When a centrifugal force is applied to the shoulder joint such as throwing, if the rotator cuff does not function properly, the rotational movement about the shoulder joint cannot be performed successfully, and the shoulder joint and elbow joint are forcibly rotated. The performance will be completed while performing compensatory exercises such as bending. This results in damage to the rotator cuff, impingement due to joint incompatibility, muscular tendon gliding failure, etc., leading to shoulder damage.

[0010] In addition, if the rotator cuff does not function normally, it will lead to a significant decrease in competition performance, not only causing failure. For example, in the case of throwing motion, if the function of the rotator tendon is reduced, the windup force will be shifted to the cocking position. At the stage of shoulder rotation, the internal movement of the humerus, the scapulohumeral rhythm (rotator) Articulation and interlocking movements such as movement of inner muscle and outer muscle around the rotator cuff are obstructed. As a result, the shoulder joint becomes incompatible, and the torsion of the rotator muscle, impingement, etc. occur and the range of motion of the scapula does not widen at the cocking point, so the distance from cocking to acceleration to release is short. (Shorter running distance) This shortens the time to amplify the force and greatly loses the ball.

[0011] On the other hand, when the rotator cuff tendons function normally at the time of release, the shoulder joint that is about to be separated by the centrifugal force can be stabilized in a certain position, and thus the trunk and upper limb can be separated. Since they are linked without being released (not thrown by hand), the ball power increases and ball control is improved.

[0012] Therefore, in order to prevent the above-mentioned shoulder joint disorders and improve the competition performance, it is important to ensure that the rotator cuff is functioning normally and that the shoulder joint is reasonably stable. . However, as described above, the conventional shoulder supporter merely limited the force to fix the shoulder joint or the range of motion, so that fundamental functional recovery cannot be obtained, and the shoulder joint There was a serious problem that competition performance deteriorated because the movement was hindered.

[0013] Therefore, the present invention can assist and promote the function of the rotator cuff with external force support, thereby preventing shoulder joint disorders and improving competition performance. The challenge is to provide shoulder supporters.

Means for solving the problem

[0014] The shoulder supporter according to the present invention includes a cloth-like supporter body that is applied to a position located on the scapula of the back of the human body in a state in which the outer periphery is pulled outward, and the outer periphery of the supporter body expands and contracts. It is made of a material with a high rate, and the center part is made of a material with a small expansion / contraction rate. The position of the material in the center is the position where it overlaps with the small circular muscle and part of the subspinous muscle when this shoulder supporter is worn on the human body.

[0015] According to the shoulder supporter of this configuration, since the outer periphery of the supporter body applied to the portion located on the scapula of the back of the human body is pulled outward, the expansion rate is large and the outer peripheral portion The material becomes stretched, and the material on the outer periphery acts to shrink toward the material at the center with a small expansion / contraction rate. As a result, the contraction of the small circular muscles and the subspinous muscles that overlap the material with a small stretch rate is promoted. When these small circular muscles and subspinous muscles perform efficient contraction, fitting into the glenoid fossa of the humeral head is optimized and the shoulder joint is stabilized.

[0016] In the present invention, the supporter body has a shape in which the center part on both the left and right sides is constricted inward in a state where it is applied to a position located on the scapula on the back of the human body, and the expansion and contraction is performed on the constricted part. The rate is small and the material is preferred.

With this configuration, the contraction of the material with a large expansion / contraction rate concentrates on the material with a low expansion / contraction rate, and the contraction of the small circular muscles and the subspinous muscles is more accelerated.

The invention's effect

[0017] The shoulder supporter according to the present invention includes a cloth-like supporter body that is applied to a position located on the scapula of the back of the human body in a state in which the outer periphery is pulled outward, and the outer periphery of the supporter body expands and contracts. Because it is made of a material with a high rate and the center part is made of a material with a low expansion / contraction rate, it is possible to assist and promote the function of the rotator cuff with external force support, thereby preventing shoulder joint disorders and competition performance. Can be improved.

BEST MODE FOR CARRYING OUT THE INVENTION

[0018] The best mode of the present invention will be specifically described below based on the embodiments shown in the drawings. Example

FIG. 1 is a perspective view of a shoulder supporter to which the present invention is applied. Figures 2 and 3 are diagrams showing the use of the shoulder supporter. Figure 2 shows the positional relationship with the muscle, and Fig. 3 shows the positional relationship with the skeleton. This shoulder supporter 1 is composed of a supporter body 2 and a wearing band 5. This embodiment is for the right shoulder, and is worn by the wearing band 5 so that the supporter body 2 hits the position located on the right scapula of the back.

[0020] The supporter body 2 has a shape in which the central part on both the left and right sides is constricted inward in the mounted state, the outer peripheral part is a high stretchable material 3 with a large stretch rate, and the central part is a low stretchable material 4 with a small stretch rate. It is summer. In this embodiment for the right shoulder, the low stretchable material 4 is located on the right side of the center of the constricted portion. Its position overlaps with the small circular muscle and part of the subspinous muscle.

[0021] The expansion / contraction ratio a of the low expansion / contraction material 4 is 0% or a value close to 0%. On the other hand, the expansion / contraction rate b of the high-stretch material 3 should be 2 to 40 times a, except when a is 0%. The rate b is configured to be larger than a.

[0022] As the highly stretchable material 3, for example, a 2-wire material that is a heat-generating and quick-drying material is suitable. Heat generation Quick-drying material has the effect that it does not accumulate heat and does not cause skin irritation that is difficult to stuffy even when sweating. As the low stretchable material 4, for example, a power net is suitable.

[0023] The high stretchable material 3 and the low stretchable material 4 need only have different stretch ratios, and any other material than the power net or mesh material can be appropriately selected and used. Also, instead of molding the high stretch material 3 and the low stretch material 4 with different materials, the whole is molded with the high stretch material 3, and the part that becomes the low stretch material 4 is reduced to the desired stretch rate by heat treatment or chemical treatment. May be allowed.

[0024] The wearing band 5 includes a chest part 6 that connects the left side and the right side of the supporter body 2 around the chest, a place (not shown) located on the front side of the chest of the chest part 6 and the supporter body 2 It consists of the shoulder 7 that connects the upper side to the shoulder. Both the chest part 6 and the shoulder part 7 have elasticity, thereby acting to pull the outer periphery of the supporter body 2 outward.

[0025] When the chest part 6 of the wearing band 5 can be divided, the shoulder supporter 1 can be easily attached and detached. The shoulder portion 7 may be removed from the chest circumference portion 6. In addition, chest area 6 of wearing band 5 If the length of the shoulder 7 is adjustable, it can cope with the difference in physique.

[0026] When this shoulder supporter 1 is worn, the outer circumference of the supporter body 2 is pulled outward by the wearing band 5, and the highly stretchable material 3 is stretched. At this time, the high stretchable material 3 acts to shrink the low stretchable material 4 by applying force. The contraction action of the high stretchable material 3 promotes the contraction of the small circular muscle and the subspinous muscle at the position of the low stretchable material 4. Supporter Because the low stretchable material 4 is located at the constriction part of the main body 2, the contraction of the high stretchable material 3 concentrates on the low stretchable material 4 and effectively contracts the small circular muscle and the subspinous muscle Be promoted. As described above, the small circular muscle and the subspinous muscle efficiently perform the contraction movement, so that the fitting into the joint fossa of the humeral head is optimized and the shoulder joint is stabilized. As a result, it is possible to prevent shoulder joint disorders associated with competition and movement using the shoulder joint and improve competition performance.

[0027] In addition to the above-mentioned baseball, volleyball, and throwing competitions, this shoulder supporter performs athletes in competitions that require tool control, such as tennis and golf that use the shoulder joint, or performs tasks and operations that use the shoulder joint. Effective for people.

Industrial applicability

[0028] Although the above embodiment is for the right shoulder, it is for the left shoulder if this is symmetrical. In addition, if the front and back sides can be reversed, one shoulder supporter can be used for both the right and left shoulders.

Brief Description of Drawings

[0029] FIG. 1 is a perspective view of a shoulder supporter useful for the present invention.

[Fig. 2] Shows the positional relationship with muscles when the shoulder supporter is in use.

[Fig. 3] Shows the positional relationship with the skeleton when the shoulder supporter is in use.

FIG. 4 is an explanatory diagram showing the position of a small circular bar.

FIG. 5 is an explanatory diagram showing the position of the subspinous muscle.

FIG. 6 is an explanatory diagram showing the position of the supraspinatus muscle.

FIG. 7 is an explanatory diagram showing the position of the subscapular muscle.

Explanation of symbols

[0030] 1 shoulder supporter

2 Supporter body High elastic material Low elastic material Wearing belt

Claims

The scope of the claims

[1] It has a cloth-like supporter body that can be applied to the part located on the scapula of the back of the human body with the outer periphery pulled outwards.

Shoulder supporter made of V, made of material and made of material with a small stretch rate at the center.

[2] The supporter body is in a shape in which the center part of both the left and right sides is constricted inward when it is placed on the scapula located on the back of the human body, and the stretch rate is small in the constricted part. The shoulder supporter of claim 1, wherein the material is located.