Linkage device and method for shoulder joint anteflexion and extorsion

Abstract

The invention discloses a shoulder joint anteflexion and extorsion linkage device which comprises a hard trunk fixing sleeve with one side provided with a connecting ring, an upper arm fixing sleeve with the rear side rotationally connected with the hard trunk fixing sleeve through an anteflexion rotating shaft, and a lower arm fixing sleeve with the upper end rotationally connected with the upper arm fixing sleeve through a bearing. One end of the linkage steel wire is fixedly connected to the outer side of the upper end of the lower arm fixing sleeve, and the linkage steel wire sequentially bypasses the rear side of the lower arm fixing sleeve, bypasses the forward bending rotating shaft and penetrates through the connecting ring, and the other end of the linkage steel wire is fixedly connected to the lower middle portion of the lower arm fixing sleeve. The invention further provides a shoulder joint anteflexion and extorsion linkage method. The shoulder joint anteflexion and extorsion linkage device is adopted for shoulder joint anteflexion and extorsion linkage. The device can assist a patient with shoulder joints difficult to bend forwards and rotate outwards at the same time to achieve linkage of shoulder joint bending forwards and rotating outwards.

Description

Technical Field

[0001] The present invention relates to a linkage device and method for shoulder flexion and external rotation. Background Art

[0002] The movement of the shoulder joint, that is, the movement of the glenohumeral joint, is not a two-dimensional forward rotation with the highest point of the humerus as the fulcrum. Instead, when the distal end of the humerus moves forward, the humeral head has a three-dimensional movement of downward, backward, and external rotation, and the entire process will also maintain the lateral distance from the scapula. If any one of such linkage mechanisms is missing, there will be uncoordinated movement between the scapula and the humeral head during forward flexion, and then scapulohumeral head impingement will occur during forward flexion.

[0003] Therefore, for patients with scapulohumeral head impingement, when restoring shoulder forward flexion, it is very important to restore the downward, backward, and external rotation movement of the humeral head and maintain the distance between the scapula and the humeral head during the forward flexion process. Therefore, it is necessary to design a device and method that can assist the linkage of shoulder flexion and external rotation in patients, so as to help assist in treating the impingement during shoulder forward flexion in patients, and further help patients restore the correct three-dimensional movement of shoulder forward flexion. Summary of the Invention

[0004] To solve the deficiencies of the prior art, the present invention provides a linkage device for shoulder flexion and external rotation, including: a rigid torso fixing sleeve for fixing on the upper torso of a patient and having a connecting ring on the side close to the affected upper arm of the patient, an upper arm fixing sleeve for fixing on the upper end of the affected upper arm of the patient and rotatably connected to the rigid torso fixing sleeve through a forward flexion rotating shaft at the rear side, a lower arm fixing sleeve for fixing on the middle and lower part of the affected upper arm of the patient and rotatably connected to the upper arm fixing sleeve through a bearing at the upper end, and a linkage wire with one end fixedly connected to the outer side of the upper end of the lower arm fixing sleeve, sequentially bypassing the rear side of the lower arm fixing sleeve, bypassing the forward flexion rotating shaft, passing through the connecting ring, and the other end fixedly connected to the middle and lower part of the lower arm fixing sleeve; the axis of the forward flexion rotating shaft is used as the rotation axis for the affected upper arm of the patient to perform a forward flexion movement, and the axis of the bearing is used as the rotation axis for the affected upper arm of the patient to perform an external rotation movement, and the axis of the bearing is perpendicular to the axis of the forward flexion rotating shaft.

[0005] The present invention also provides a linkage method for shoulder flexion and external rotation, using the above-mentioned linkage device to perform the linkage of shoulder flexion and external rotation.

[0006] For the specific content of the linkage device and method for shoulder flexion and external rotation of the present invention, please refer to the specific implementation manner.

[0007] The advantages and beneficial effects of the present invention are as follows: providing a linkage device and method for shoulder flexion and external rotation, the present invention can assist patients with difficulties in simultaneously performing shoulder flexion and external rotation to achieve the linkage of shoulder flexion and external rotation.

[0008] The present invention has the following characteristics: 1) In the present invention, a Velcro strap is wound around the upper arm on the affected side of the patient. The Velcro strap can increase the friction between the lower arm fixing sleeve and the upper arm, so that when the lower arm fixing sleeve rotates, there is no relative rotation with the upper arm on the affected side of the patient; it can enable the lower arm fixing sleeve to stably drive the external rotation of the upper arm on the affected side of the patient.

[0009] 2) The present invention provides a solution that can accompany the completion of the inferior, posterior, and external rotation of the humeral head during forward flexion and maintain the distance between the humeral head and the scapula during the process.

[0010] 3) The present invention provides a simple device that can be used at home and worn by the patient, and does not require electric drive during the combined movement of shoulder forward flexion and external rotation.

[0011] 4) The present invention provides a solution that can prevent shoulder forward flexion impingement.

[0012] 5) The present invention can be used to assist in the treatment of active shoulder pain.

[0013] 6) The present invention provides a solution that can safely increase the range of motion of the three-dimensional movement of shoulder forward flexion.

[0014] 7) The present invention first proposes to correct the problem of insufficient movement of the humeral head accompanied by shoulder forward flexion through a linkage device.

[0015] 8) The present invention first proposes to realize the normal three-dimensional movement of forward flexion through a wearable device.

[0016] 9) The present invention first proposes a solution for assisting in the treatment of shoulder forward flexion impingement through a linkage device.

[0017] 10) The present invention first proposes a preventive device for shoulder forward flexion impingement. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is the front schematic view of the linkage device of the present invention; Figure 2 is the back schematic view of the linkage device of the present invention; Figure 3 is the partial back schematic view of the linkage device of the present invention; In each figure: 1 is a rigid torso fixing sleeve, 2 is a buckle, 3 is an adjustment strap, 4 is a baffle, 5 is an upper arm fixing sleeve, 6 is a Velcro strap, 7 is a lower arm fixing sleeve, 8 is an inner lining Velcro, 9 is a forward flexion rotating shaft, 10 is a bearing, 11 is a back plate, 12 is a side enclosure, 13 is a linkage wire, 14 is a first fixed end, 15 is a connecting ring, 16 is a second fixed end, 17 is a second up and down adjustment mechanism. DETAILED DESCRIPTION OF THE INVENTION

[0019] The following will further describe the specific embodiments of the present invention in conjunction with the accompanying drawings and embodiments. The following embodiments are only used to more clearly illustrate the technical solutions of the present invention, and cannot be used to limit the protection scope of the present invention.

[0020] The technical solutions of the specific implementation of the present invention are as follows: As Figures 1 to 3 shown, a linkage method for shoulder flexion and external rotation uses a linkage device to perform the linkage of shoulder flexion and external rotation; The linkage device includes: a magic tape 6 for winding and fixing on the middle and lower part of the affected upper arm of the patient, a rigid torso fixing sleeve 1 for fixing on the patient's upper torso and having a connection ring 15 on the side close to the affected upper arm of the patient, an upper arm fixing sleeve 5 for fixing on the upper end of the affected upper arm of the patient and rotatably connected to the rigid torso fixing sleeve 1 through a flexion rotating shaft 9 at the rear side, a lower arm fixing sleeve 7 for fixing on the middle and lower part of the affected upper arm of the patient and rotatably connected to the upper arm fixing sleeve 5 through a bearing 10 at the upper end, and a linkage wire 13 with one end fixedly connected to the outer side of the upper end of the lower arm fixing sleeve 7, sequentially bypassing the rear side of the lower arm fixing sleeve 7, bypassing the flexion rotating shaft 9, passing through the connection ring 15, and the other end fixedly connected to the middle and lower part of the lower arm fixing sleeve 7; the axis of the flexion rotating shaft 9 is used as the rotation axis for the affected upper arm of the patient to perform the flexion movement, and the axis of the bearing 10 is used as the rotation axis for the affected upper arm of the patient to perform the external rotation movement, and the axis of the bearing 10 is perpendicular to the axis of the flexion rotating shaft 9; The rigid torso fixing sleeve 1 includes: a back plate 11 that abuts against the patient's back, and side surrounds 12 that are flipped from both sides of the back plate to the patient's chest; the side surrounds 12 on both sides of the back plate 11 are connected by an adjustment belt 3 with a buckle 2; The rear side of the upper arm fixing sleeve 5 is rotatably connected to the back plate 11 of the rigid torso fixing sleeve 1 through a flexion rotating shaft 9; on the front side of the upper arm fixing sleeve 5, there is: a baffle 4 that is located in front of the affected humeral head of the patient and is used to limit the forward movement of the affected humeral head of the patient; the baffle 4 is movably connected to the upper arm fixing sleeve 5 through a first up and down adjustment mechanism, and the first up and down adjustment mechanism is used to adjust the vertical position of the baffle 4 on the upper arm fixing sleeve 5; The lower arm fixing sleeve 7 is tightly sleeved around the outer periphery of the magic tape 6; an inner lining magic tape 8 for connecting with the magic tape 6 is also fixedly provided on the inner wall of the lower arm fixing sleeve 7; the lower arm fixing sleeve 7 is connected to the magic tape 6 through the inner lining magic tape 8; On the outer side of the upper end of the lower arm fixing sleeve 7, there is provided: a first fixing end 14 for fixedly connecting one end of the linkage wire 13; in the middle and lower part of the lower arm fixing sleeve 7, there is provided: a second fixing end 16 for fixedly connecting the other end of the linkage wire 13; both ends of the linkage wire 13 are fixedly connected to the first fixing end 14 and the second fixing end 16 respectively; the second fixing end 16 is movably connected to the lower arm fixing sleeve 7 through a second up-and-down adjusting mechanism 17, and the second up-and-down adjusting mechanism 17 is used to adjust the vertical position of the second fixing end 16 on the lower arm fixing sleeve 7; The forward flexion rotating shaft 9 is a telescopic rotating shaft; The linkage for shoulder joint forward flexion and external rotation by using a linkage device includes the following steps: 1) Put on the rigid torso fixing sleeve 1 for a patient with insufficient external rotation movement of the humeral head when the upper arm makes a forward flexion and external rotation movement at the same time, and wind the magic tape 6 around and fix it on the middle and lower part of the affected upper arm of the patient; make the back plate 11 of the rigid torso fixing sleeve 1 lean against the patient's back, make the side surrounds 12 on both sides of the rigid torso fixing sleeve 1 be in front of the patient's chest, and make the two side surrounds 12 be connected through the adjusting belt 3 with the buckle 2, so as to fix the rigid torso fixing sleeve 1 on the patient's upper body trunk; put the upper arm fixing sleeve 5 rotatably connected to the rigid torso fixing sleeve 1 through the forward flexion rotating shaft 9 on the upper end of the affected upper arm of the patient; put the lower arm fixing sleeve 7 rotatably connected to the upper arm fixing sleeve 5 through the bearing 10 on the magic tape 6, and make the lower arm fixing sleeve 7 be connected to the magic tape 6 through the inner lining magic tape 8, so as to fix the lower arm fixing sleeve 7 on the middle and lower part of the affected upper arm of the patient; at this time, the baffle 4 on the upper arm fixing sleeve 5 is in front of the affected humeral head of the patient, the connecting ring 15 on the rigid torso fixing sleeve 1 is on the affected side of the patient, the axis of the forward flexion rotating shaft 9 can be used as the rotation axis for the affected upper arm of the patient to make a forward flexion movement, the axis of the bearing 10 can be used as the rotation axis for the affected upper arm of the patient to make an external rotation movement, and the axis of the bearing 10 is perpendicular to the axis of the forward flexion rotating shaft 9; 2) The affected upper arm of the patient makes a forward flexion movement; during the forward flexion process, the linkage wire 13 is gradually tightened, and then the linkage wire 13 pulls the lower arm fixing sleeve 7 to rotate, and makes the affected upper arm of the patient be driven by the lower arm fixing sleeve 7 to make an external rotation movement, so as to realize the linkage of shoulder joint forward flexion and external rotation; And before the affected upper arm of the patient makes a forward flexion movement: By adjusting the axial length of the forward flexion rotating shaft 9 (the forward flexion rotating shaft 9 is a telescopic rotating shaft), the distance between the upper arm fixing sleeve 5 and the rigid torso fixing sleeve 1 is adjusted, so as to realize the adjustment of the distance between the affected scapula and the humeral head of the patient; The vertical position of the baffle 4 on the upper arm fixing sleeve 5 is adjusted through the first up-and-down adjusting mechanism on the upper arm fixing sleeve 5, so as to adjust the vertical position of the baffle 4 to a position where it can limit the forward movement of the affected humeral head of the patient; The vertical position of the second fixed end 16 on the lower arm fixing sleeve 7 is adjusted by the second up-and-down adjusting mechanism 17 on the lower arm fixing sleeve 7, so as to adjust the forward flexion amplitude of the affected upper arm of the patient before tightening the linkage wire 13 when performing the forward flexion movement.

[0021] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A linkage device for shoulder flexion and external rotation, characterized in that, Comprising: A rigid torso fixing sleeve for fixing on the upper torso of a patient and having a connecting ring on one side close to the affected upper arm of the patient, an upper arm fixing sleeve for fixing on the upper end of the affected upper arm of the patient and rotatably connected to the rigid torso fixing sleeve through a forward flexion rotating shaft at the rear side, a lower arm fixing sleeve for fixing on the middle and lower part of the affected upper arm of the patient and rotatably connected to the upper arm fixing sleeve through a bearing at the upper end, and a linkage wire with one end fixedly connected to the outer side of the upper end of the lower arm fixing sleeve, sequentially bypassing the rear side of the lower arm fixing sleeve, bypassing the forward flexion rotating shaft, passing through the connecting ring, and the other end fixedly connected to the middle and lower part of the lower arm fixing sleeve; the axis of the forward flexion rotating shaft is used as the rotation axis for the affected upper arm of the patient to perform a forward flexion action, and the axis of the bearing is used as the rotation axis for the affected upper arm of the patient to perform an external rotation action, and the axis of the bearing is perpendicular to the axis of the forward flexion rotating shaft.

2. The linkage device for shoulder flexion and external rotation according to claim 1, characterized in that The rigid torso fixing sleeve includes: a back plate that abuts against the back of the patient, and side surrounds that are flipped from both sides of the back plate to the front of the patient; the side surrounds on both sides of the back plate are connected by an adjustment strap with a buckle; the rear side of the upper arm fixing sleeve is rotatably connected to the back plate of the rigid torso fixing sleeve through a forward flexion rotating shaft.

3. The linkage device for shoulder flexion and external rotation according to claim 2, characterized in that, On the front side of the upper arm fixing sleeve, there is provided: a baffle that is in front of the affected humeral head of the patient and is used to limit the forward movement of the affected humeral head of the patient.

4. The linkage device for shoulder flexion and external rotation according to claim 3, characterized in that The baffle is movably connected to the upper arm fixing sleeve through a first up and down adjustment mechanism, and the first up and down adjustment mechanism is used to adjust the vertical position of the baffle on the upper arm fixing sleeve.

5. The linkage device for shoulder joint forward flexion and external rotation according to claim 4, characterized in that, Further comprising: A magic tape for winding and fixing on the middle and lower part of the affected upper arm of the patient; the lower arm fixing sleeve is sleeved around the periphery of the magic tape.

6. The linkage device for shoulder forward flexion and external rotation according to claim 5, characterized in that, On the inner wall of the lower arm fixing sleeve, there is also fixedly provided: a lining magic tape for connecting with the magic tape; the lower arm fixing sleeve is connected to the magic tape through the lining magic tape.

7. The linkage device for shoulder flexion and external rotation according to claim 6, characterized in that, On the outer side of the upper end of the lower arm fixing sleeve, there is provided: a first fixed end for fixedly connecting one end of the linkage wire; on the middle and lower part of the lower arm fixing sleeve, there is provided: a second fixed end for fixedly connecting the other end of the linkage wire; both ends of the linkage wire are fixedly connected to the first fixed end and the second fixed end respectively; the second fixed end is movably connected to the lower arm fixing sleeve through a second up and down adjustment mechanism, and the second up and down adjustment mechanism is used to adjust the vertical position of the second fixed end on the lower arm fixing sleeve.

8. The linkage device for shoulder flexion and external rotation according to claim 7, characterized in that, The forward flexion rotating shaft is a telescopic rotating shaft.

9. A linkage method for shoulder flexion and external rotation, characterized in that, Performing the linkage of shoulder joint forward flexion and external rotation by using the linkage device described in claim 8, including the following steps: 1) Put a rigid torso fixing sleeve on a patient with insufficient external rotation movement of the humeral head when the upper arm makes a forward flexion and external rotation movement at the same time, and wind and fix the magic tape around the middle and lower part of the affected upper arm of the patient; make the back plate of the rigid torso fixing sleeve lean against the patient's back, make the side enclosures on both sides of the rigid torso fixing sleeve be in front of the patient's chest, and connect the side enclosures on both sides through an adjusting strap with a buckle, so as to fix the rigid torso fixing sleeve on the patient's upper body trunk; put the upper arm fixing sleeve whose rear side is rotationally connected to the rigid torso fixing sleeve through a forward flexion rotating shaft on the upper end of the affected upper arm of the patient; put the lower arm fixing sleeve whose upper end is rotationally connected to the upper arm fixing sleeve through a bearing on the magic tape, and connect the lower arm fixing sleeve to the magic tape through the inner lining magic tape, so as to fix the lower arm fixing sleeve on the middle and lower part of the affected upper arm of the patient; at this time, the baffle on the upper arm fixing sleeve is in front of the affected humeral head of the patient, the connecting ring on the rigid torso fixing sleeve is on the affected side of the patient, the axis of the forward flexion rotating shaft can be used as the rotation axis for the affected upper arm of the patient to make a forward flexion movement, the axis of the bearing can be used as the rotation axis for the affected upper arm of the patient to make an external rotation movement, and the axis of the bearing is perpendicular to the axis of the forward flexion rotating shaft; 2) The affected upper arm of the patient makes a forward flexion movement; during the forward flexion process, the linkage wire is gradually tightened, and then the linkage wire pulls the lower arm fixing sleeve to rotate, and makes the affected upper arm of the patient be driven by the lower arm fixing sleeve to make an external rotation movement, so as to realize the linkage of the forward flexion and external rotation of the shoulder joint.

10. The linkage method for shoulder flexion and external rotation according to claim 9, characterized in that In step 2), before the affected upper arm of the patient makes a forward flexion movement: Adjust the axial length of the forward flexion rotating shaft to adjust the distance between the upper arm fixing sleeve and the rigid torso fixing sleeve, and then adjust the distance between the affected scapula and the humeral head of the patient; Adjust the vertical position of the baffle on the upper arm fixing sleeve through the first up-and-down adjusting mechanism on the upper arm fixing sleeve, and then adjust the vertical position of the baffle to limit the forward movement of the affected humeral head of the patient; Adjust the vertical position of the second fixed end on the lower arm fixing sleeve through the second up-and-down adjusting mechanism on the lower arm fixing sleeve, and then adjust the forward flexion amplitude of the affected upper arm of the patient before tightening the linkage wire when making a forward flexion movement.

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