Shoulder cartilage prosthesis

Abstract

The present invention relates to a shoulder cartilage prosthesis which, when a rotator cuff is severely damaged and surgical treatment is impossible, is inserted and coupled between an os acromiale and the humeral head to compensate for the damaged rotator cuff, thereby relieving pain and resolving motor impairment and immobility caused by impingement between the humerus and the os acromiale. When these conditions are not resolved through conservative treatments such as administration of anti-inflammatory analgesics, use of topical steroid injections, and physical therapy, and surgical treatments such as platelet-rich plasma injection therapy, a separate prosthesis capable of compensating for the rotator cuff is fastened so as to enable pain to be eliminated and a therapeutic effect to be exerted, thus enabling permanent or semi-permanent use in the future in a convenient and economical manner.

Description

Shoulder cartilage implant

[0001] The present invention relates to a shoulder cartilage implant for supplementing a damaged rotator cuff by inserting and joining it between the acromion and the humeral head when the rotator cuff is severely damaged and surgical treatment is impossible, thereby relieving the incompleteness of movement, inactivity, and pain caused by the collision between the humerus and the acromion.

[0002] Inside the shoulder are four muscles essential for shoulder movement (supraspinatus, infraspinatus, subscapularis, and teres minor), collectively known as the rotator cuff. The rotator cuff converts the powerful vertical shear force of the deltoid muscle into smooth abduction shear force and acts as a protective shield to prevent the humeral head from coming into contact with the subacromial surface.

[0003] While rotator cuff injuries can occur due to acute trauma, it is known that most cases develop without a specific history of trauma and progress gradually. In other words, although rotator cuff disease is fundamentally a degenerative condition associated with aging, it can also be caused by external factors such as shoulder joint instability, arthritis of the acromioclavicular joint, impingement of the osacromiale and coracoclavicular ligament, impingement of the coracoid process, and impingement with the posterosuperior joint. Furthermore, it is known that rotator cuff injuries are caused not only by external compression resulting from impingement beneath the acromion (impingement syndrome) but also by the complex interplay of various factors, including intrinsic degeneration of the rotator cuff itself and the influence of inflammatory responses.

[0004] If these pathological changes are accompanied by overuse of the arm or minor trauma, they can progress to a rotator cuff tear, causing severe impairment in daily life and work activities.

[0005] Symptoms of rotator cuff injury include pain, muscle atrophy, limited range of motion, weakness of the shoulder muscles, and tenderness in the anterolateral aspect of the shoulder. If the tear is severe, the torn area can be palpated externally. Additionally, if one attempts to lift the affected arm with the unaffected arm, it may rise but cannot be maintained due to weakness caused by the tear; the affected arm may drop abruptly, or the patient may complain of shoulder pain.

[0006] Rotator cuff injuries of the shoulder joint differ in clinical characteristics and treatment depending on the stage, ranging from the early Stage 1 to the late Stage 3. Stage 1 is characterized by swelling and bleeding of the rotator cuff; it is more common in individuals under 25 years of age and can be cured with conservative treatment. Stage 2 involves fibrosis and tendinitis of the rotator cuff; it is more common in individuals between 25 and 40 years of age, and symptoms recur depending on activity levels. While it can improve with conservative treatment, surgery is required in severe cases. Stage 3 involves the formation of degenerative osteophytes and a ruptured rotator cuff; it is more common in individuals over 40 years of age, and surgery is necessary due to the continuous worsening of symptoms.

[0007] Treatment for rotator cuff tears includes conservative and surgical methods; in Korea, surgical treatment is more commonly performed, with surgical techniques including endoscopic arthrodesis and open repair. Regardless of the technique, surgical treatment always carries the risk of complications such as surgical failure and infection, as well as the problem of surgical scarring on the deltoid muscle. Furthermore, rehabilitation training for several months is required after surgery, and in some cases, pain may not completely disappear or movement may not fully recover due to joint stiffness.

[0008] On the other hand, there are cases where the rotator cuff is completely ruptured despite surgical treatment, making it impossible to resolve even with surgery.

[0009] Such rotator cuff tears usually cause chronic pain. While spontaneous tears due to degenerative changes are common in individuals over the age of 50, tears caused by sports trauma are also frequently occurring recently due to the increase in the sports population. The factors causing rotator cuff tears are very diverse, including degenerative changes, congenital abnormalities and developmental failure, impaired blood circulation in the rotator cuff, and overuse of the shoulder.

[0010] According to recent studies, rotator cuff injuries are caused by a complex interplay of various factors rather than a single cause. The primary causes include rotator cuff tears resulting from minor trauma or trivial movements in a state where the tendon structure is weakened due to degenerative tendinitis or reduced blood flow, or from direct and severe trauma such as traffic accidents. Furthermore, it is reported that rotator cuff tears can also occur when external forces are applied during excessive extension, or when soft tissues are stressed due to overuse of the shoulder by athletes.

[0011] The shoulder cartilage implant of the present invention was invented to resolve the above-mentioned problems, and

[0012] The objective of the present invention is to provide a shoulder cartilage implant that can eliminate pain and produce therapeutic effects by attaching a separate implant to supplement the rotator cuff when the condition is not resolved by conservative treatments such as taking pain relievers and anti-inflammatory drugs, using local steroid injections, physical therapy, or surgical treatments such as platelet-rich plasma injection therapy, and can be used conveniently and economically for permanent or semi-permanent use in the future.

[0013] To achieve the above-mentioned purpose, the present invention,

[0014] The main body (10) is formed with a top plate (100) integrally formed with a coupling mounting plate (101) that is formed in a rounded shape that surrounds the humerus (H) and is coupled between the humerus (H) and the acromion (A), and an insertion mounting plate (102) that is formed on one side of the coupling mounting plate (101) and is inserted and secured between the acromion (A) and the scapula (B) with a shape that is relatively narrower than the coupling mounting plate (101), and a section coupling plate (110) in a rounded shape that surrounds the humerus (H) and is formed integrally at the lower part of the branching point of the coupling mounting plate (101) and the insertion mounting plate (102), and is formed in a vertical direction so that it can be inserted and secured between the humerus (H) and the scapula (A), thereby enabling smooth rotation of the humerus (H).

[0015] It includes a deformation-preventing strip (111) formed at a predetermined distance from the surface edges of the above-mentioned coupling plate (101) and insertion plate (102) and simultaneously formed at a predetermined distance from the edge of one side of the above-mentioned partition coupling plate (110),

[0016] The above main body (10) comprises a shoulder cartilage implant comprising 45-78% by weight of silicone, 5-15% by weight of styrene / isoprene copolymer, 3-10% by weight of hydrogenated poly, 2-5% by weight of cellulose gum, 7-15% by weight of polyisobutene, and 5-10% by weight of a mixture of one or more of keratin, collagen, panthenol, retinol, biotin, and methylsulfonylmethane (MSM).

[0017] A shoulder cartilage implant comprising: a rotational drive unit (200) provided on the bottom surface of the coupling mounting plate (101) and the other side of the partition coupling plate (110) to allow the humerus (H) to rotate, and a fixing unit (210) formed on the bottom surface of the insertion mounting plate (102) and one side of the partition coupling plate (110) to be fixedly coupled to the scapula (B);

[0018] The above deformation prevention band (111) comprises a shoulder cartilage implant made of stainless steel or metal, and

[0019] On the outer surface of the above main body (10),

[0020] The above objective can be achieved by applying a coating agent mixed with 40 to 87 weight% water, 5 to 10 weight% of either poly(acrylic acid-co-maleic acid) sodium salt or poly(4-styrenesulfonic acid-co-maleic acid) sodium salt, 5 to 30 weight% of polyurethane resin, and 3 to 20 weight% of polyvinyl alcohol as its constituent feature.

[0021] The present invention, configured as described above, allows for the removal of pain and therapeutic effects by attaching a separate implant to supplement the rotator cuff when the condition is not resolved by conservative treatments such as taking analgesic anti-inflammatory drugs, using local steroid injections, physical therapy, or surgical treatments such as platelet-rich plasma injection therapy, and enables convenient and economical use for permanent or semi-permanent use in the future.

[0022] Although the present invention has been illustrated and described above with reference to specific preferred embodiments, the present invention is not limited to the above-mentioned embodiments, and various changes and modifications may be made by those skilled in the art without departing from the spirit of the invention.

[0023] FIG. 1 is a perspective view of a shoulder cartilage implant according to the present invention.

[0024] FIG. 2 is a plan view of the shoulder cartilage implant of the present invention,

[0025] FIG. 3 is a cross-sectional view along line AA of the shoulder cartilage implant of the present invention,

[0026] FIG. 4 is a BB-line cross-sectional view of the shoulder cartilage implant of the present invention,

[0027] FIG. 5 is a cross-sectional view along the CC line of the shoulder cartilage implant according to the present invention.

[0028] FIG. 6 is a cross-sectional view along the DD line of the shoulder cartilage implant of the present invention,

[0029] FIG. 7 is a diagram showing the state in which the rotator cuff is normally maintained between the humerus, acromion, and scapula in the shoulder cartilage implant of the present invention.

[0030] FIG. 8 is a diagram showing the use of the shoulder cartilage implant of the present invention in a state where it is fastened between the humerus, acromion, and scapula.

[0031] Specific structural or functional descriptions regarding embodiments according to the concept of the present invention disclosed in this specification are merely illustrative for the purpose of explaining embodiments according to the concept of the present invention. Since embodiments according to the concept of the present invention may be subject to various modifications and may take various forms, they include all modifications, equivalents, or substitutions that fall within the spirit and technical scope of the present invention. Furthermore, terms and words used in the specification and claims are not limited to their ordinary or dictionary meanings, and should be interpreted in a meaning and concept consistent with the technical spirit of the present invention, based on the understanding that the inventor may appropriately define the concept of the terms to best describe his invention. Accordingly, the embodiments described in the specification and the configurations illustrated in the drawings are merely one preferred embodiment of the present invention and do not represent all aspects of the technical spirit of the present invention; therefore, it should be understood that various equivalents and modifications capable of replacing them may be possible or exist at the time of filing the present invention.

[0032] Furthermore, unless otherwise defined in the specification of the present invention, all terms used herein, including technical or scientific terms, have the same meaning as generally understood by those skilled in the art to which the present invention pertains. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology, and should not be interpreted in an ideal or overly formal sense unless explicitly defined in this specification.

[0033]

[0034] Hereinafter, a detailed description of the shoulder cartilage implant of the present invention will be provided together with the drawings.

[0035] FIG. 1 is a perspective view of the shoulder cartilage implant according to the present invention, FIG. 2 is a plan view of the shoulder cartilage implant according to the present invention, FIG. 3 is a cross-sectional view along line AA of the shoulder cartilage implant according to the present invention, FIG. 4 is a cross-sectional view along line BB of the shoulder cartilage implant according to the present invention, FIG. 5 is a cross-sectional view along line CC of the shoulder cartilage implant according to the present invention, FIG. 6 is a cross-sectional view along line DD of the shoulder cartilage implant according to the present invention, FIG. 7 is a state diagram showing the rotator cuff normally maintained between the humerus, acromion, and scapula in the shoulder cartilage implant according to the present invention, and FIG. 8 is a state diagram showing the use of the shoulder cartilage implant according to the present invention fastened between the humerus, acromion, and scapula.

[0036]

[0037] The present invention aims to solve a technical problem by connecting a main body (10) that supplements a rotator cuff that is ruptured and cannot be treated surgically or with supplementary treatment, between the humerus, acromion, and scapula to facilitate rotation between the joints, thereby eliminating pain and enabling therapeutic effects, and allowing for convenient and economical use in the future, either permanently or semi-permanently.

[0038]

[0039] Specifically, as illustrated in FIGS. 1 to 6, the present invention

[0040] The main body (10) is,

[0041] A top plate (100) integrally formed with a coupling mounting plate (101) that is seated on the head of the humerus (H) and is coupled between the humerus (H) and the acromion (A) in a rounded shape that surrounds the humerus (H), and an insertion mounting plate (102) that is inserted and fastened between the acromion (A) and the scapula (B) on one side of the coupling mounting plate (101) in a shape that is relatively narrower than the coupling mounting plate (101), and

[0042] In a state in which a rounded partitioned coupling plate (110) is formed integrally at the lower part of the branching point of the coupling mounting plate (101) and the insertion mounting plate (102), and is formed vertically so as to be insertable and fastened between the humerus (H) and the scapula (A) to allow smooth rotation of the humerus (H),

[0043] A configuration comprising a deformation-preventing strip (111) formed at a predetermined distance from the surface edges of the coupling mounting plate (101) and the insertion mounting plate (102) and simultaneously formed at a predetermined distance from the edge of one side of the partition coupling plate (110),

[0044]

[0045] As illustrated in FIG. 3, a rotational driving unit (200) is provided on the bottom surface of the coupling mounting plate (101) and on the other side of the partition coupling plate (110) so that the humerus (H) can rotate, and a fixing unit (210) is formed on the bottom surface of the insertion mounting plate (102) and on one side of the partition coupling plate (110) to be fixedly coupled to the scapula (B).

[0046]

[0047] Meanwhile, in order to maintain the shape of the main body (10), the deformation prevention band (111) is made of stainless steel or metal.

[0048]

[0049] Next, the main body (10) is made of silicone rubber and the coating agent is made of Teflon.

[0050] More preferably, it is in close contact with the humerus (H), acromion (A), and scapula (B) while simultaneously preventing detachment, and more importantly, in order to minimize deformation of the shape,

[0051] The above main body (10) is composed of 45-78% by weight of silicone, 5-15% by weight of styrene / isoprene copolymer, 3-10% by weight of hydrogenated poly, 2-5% by weight of cellulose gum, 7-15% by weight of polyisobutene, and 5-10% by weight of a mixture of at least one of keratin, collagen, panthenol, retinol, biotin, and methylsulfonylmethane (MSM).

[0052]

[0053] In addition, since it is inserted and bonded inside the human body, in order to prevent deformation or deterioration caused by substances originating from the human body or repeated use, the above coating agent,

[0054] It is preferable that the mixture comprises 40 to 87 weight% water, 5 to 10 weight% of either poly(acrylic acid-co-maleic acid) sodium salt or poly(4-styrenesulfonic acid-co-maleic acid) sodium salt, 5 to 30 weight% polyurethane resin, and 3 to 20 weight% polyvinyl alcohol.

[0055]

[0056] The present invention, configured as described above, is intended to minimize deformation of the main body (10) by ensuring that the material of the main body (10) itself is very important for elasticity, flexibility, and prevention of deformation, and by allowing the deformation prevention band (111) to maintain the original shape of the main body (10) as much as possible, and also to minimize the main body (10) from detaching or moving from the humerus (H), scapula (B), and acromion (A) due to repetitive movement.

[0057] In addition, the deformation prevention band (111) is made of stainless steel or metal material to maintain the shape of the main body (10).

[0058]

[0059] The present invention, configured as described above, is configured such that rotation is impossible due to collision with the acromion (A) and scapula (B) that occurs during rotation or rotation of the humerus (H) because there is no ruptured rotator cuff (R), and thus pain and difficulty in activity are resolved. When the elastic rotator cuff (R) is ruptured, it is pulled between the acromion (A) and scapula (B), making rotation and rotation of the humerus (H) impossible. To resolve this, the main body (10) of the present invention replaces the rotator cuff (R).

[0060] That is, when the above-mentioned coupling mounting plate (101) is mounted to surround the head of the humerus (H) and the above-mentioned insertion mounting plate (102) is coupled between the acromion (A) and the scapula (B), and then the above-mentioned compartment coupling plate (110) is inserted and fastened between the humerus (H) and the scapula (A),

[0061] As shown in FIGS. 3, 7, and 8, the humerus (H) can be smoothly rotated or rotated in the rotational drive unit (200), and the main body (10) can be firmly maintained by the scapula (B) in the fixed unit (210).

[0062] To supplement this, a deformation-preventing band (111) is provided, and furthermore, by making the material of the main body (10) capable of maintaining elasticity and elasticity while simultaneously maintaining its shape as described above, the present invention maintains a shape and functional role capable of achieving the above-mentioned purpose.

[0063] Meanwhile, the size of the implant of the present invention can vary depending on the patient's physical structure or body size.

[0064]

[0065] The present invention configured as described above is,

[0066] When the condition is not resolved by conservative treatments such as taking pain relievers and anti-inflammatory drugs, using local steroid injections, physical therapy, or surgical treatments such as platelet-rich plasma injections, a separate implant can be fitted to supplement the rotator cuff to eliminate pain and produce a therapeutic effect, and it is effective to enable convenient and economical use for permanent or semi-permanent use in the future.

[0067]

[0068] As described above, although the present invention has been explained by limited embodiments and drawings, the present invention is not limited to the above embodiments, and it is obvious that various modifications and variations from the description above may be possible by those skilled in the art to which the present invention belongs.

[0069] Therefore, the technical concept of the present invention should be understood by the claims set forth below, but it is obvious that all equivalent or analogous variations thereof fall within the scope of the technical concept of the present invention.

[0070] [Explanation of the symbol]

[0071] 10 : Main body 100 : Top plate

[0072] 101: Connecting mounting plate 102: Insertion mounting plate

[0073] 110: Partition connecting plate 111: Deformation prevention strip

[0074] 200: Rotating drive unit 210: Fixed unit

[0075] A: Acromion B: Scapula

[0076] H: Humerus

Claims

1. The main body (10) is formed with a top plate (100) integrally formed with a coupling mounting plate (101) that is formed in a rounded shape that surrounds the humerus (H) and is coupled between the humerus (H) and the acromion (A), and an insertion mounting plate (102) that is formed on one side of the coupling mounting plate (101) and is inserted and secured between the acromion (A) and the scapula (B) with a shape that is relatively narrower than the coupling mounting plate (101), and a section coupling plate (110) in a rounded shape that surrounds the humerus (H) and is formed integrally at the lower part of the branching point of the coupling mounting plate (101) and the insertion mounting plate (102), and is formed in a vertical direction so that it can be inserted and secured between the humerus (H) and the scapula (A), thereby enabling smooth rotation of the humerus (H). It includes a deformation-preventing strip (111) formed at a predetermined distance from the surface edges of the above-mentioned coupling plate (101) and insertion plate (102) and simultaneously formed at a predetermined distance from the edge of one side of the above-mentioned partition coupling plate (110), The above main body (10) comprises a shoulder cartilage implant comprising 45-78% by weight of silicone, 5-15% by weight of styrene / isoprene copolymer, 3-10% by weight of hydrogenated poly, 2-5% by weight of cellulose gum, 7-15% by weight of polyisobutene, and 5-10% by weight of a mixture of one or more of keratin, collagen, panthenol, retinol, biotin, and methylsulfonylmethane (MSM).

2. In Paragraph 1, A shoulder cartilage implant comprising a rotation drive unit (200) provided on the bottom surface of the above-mentioned coupling plate (101) and on the other side of the above-mentioned partition coupling plate (110) to allow the humerus (H) to rotate, and a fixing unit (210) formed on the bottom surface of the above-mentioned insertion plate (102) and on one side of the above-mentioned partition coupling plate (110) to be fixedly coupled to the scapula (B).

3. In Paragraph 1, The above deformation prevention band (111) is a shoulder cartilage implant made of stainless steel or metal.

4. In Paragraph 1, On the outer surface of the above main body (10), A shoulder cartilage implant comprising a coating agent applied by mixing 40 to 87 weight% of water, 5 to 10 weight% of either poly(acrylic acid-co-maleic acid) sodium salt or poly(4-styrenesulfonic acid-co-maleic acid) sodium salt, 5 to 30 weight% of polyurethane resin, and 3 to 20 weight% of polyvinyl alcohol.

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