Artificial rotator cuff device for tearing huge rotator cuff
By designing an artificial rotator cuff device, which uses padding and a measuring tape spring mechanism to stabilize the humeral head, the problem of shoulder instability and impingement caused by a large rotator cuff tear was solved, enabling early rehabilitation and pain relief.
Patent Information
- Application Number
- CN202311806077.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-26
- Publication Date
- 2026-01-30
AI Technical Summary
Large rotator cuff tears lead to shoulder instability and impingement wear between the humeral head and acromion. Current treatments carry the risk of re-fracture and pain.
Design an artificial rotator cuff device including a pad and a measuring tape spring mechanism. The pad supports the space between the acromion and the glenoid fossa, and the artificial ligament is fixed to the humeral head by screws. The measuring tape spring mechanism is used to stabilize and reposition the humeral head and avoid impact.
It eliminates the impingement between the humeral head and the acromion, relieves pain, lengthens the attachment surface of the shoulder joint, prevents instability, and shortens the recovery period.
Smart Images
Figure CN121421739A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of shoulder rehabilitation, in particular to an artificial rotator cuff device for large rotator cuff tear. BACKGROUND
[0002] Large rotator cuff tear has always been a difficult problem in clinical treatment. Due to the large defect, it is often impossible to directly repair under arthroscopy. It is difficult to reestablish effective rotator cuff tendon-bone healing, and even if it is repaired in the first stage, there is a high risk of re-rupture and poor prognosis. At present, it is believed that the method of using a graft tendon to reconstruct or fixing one end of an artificial graft to the superior margin of the glenoid and the other end to the footprint of the rotator cuff to reconstruct the superior capsule can correct the shoulder instability caused by large rotator cuff tear and obtain satisfactory surgical treatment effect, but there are still many problems in practice. For example, in repeated activities of the shoulder joint, there is still a risk of impingement between the humeral head and the acromion, causing wear and impact, causing pain, and being not conducive to recovery. SUMMARY
[0003] In order to solve the above technical problems, the present application provides an artificial rotator cuff device for large rotator cuff tear, which can eliminate the subacromial impingement of the humeral head during movement, relieve pain and shorten the recovery period.
[0004] The technical scheme is as follows: an artificial rotator cuff device for large rotator cuff tear, characterized in that it comprises a spacer arranged between the acromion and the glenoid, the lower part of the spacer is supported on the glenoid, the upper part of the spacer is fixed by a screw penetrating through the acromion, a tape spring mechanism is installed inside the spacer and a long slot is formed in the outer wall of the spacer towards the humeral head side, one end of an artificial ligament is fixed to the outer side of the humeral head and the other end extends into the long slot and is connected to the tape spring mechanism.
[0005] Further characterized in that the artificial ligament is fixed to the outer side of the humeral head by two anchors. The spacer is a polyethylene spacer.
[0006] After the present application is adopted, the acromion and the glenoid are separated by the spacer, and during the movement of the shoulder joint, the humeral head will not hit the acromion, thereby eliminating the subacromial impingement of the humeral head during movement, relieving the pain of the shoulder joint, and the presence of the spacer not only prolongs the attachment surface of the shoulder joint, but also presses down the humeral head to prevent shoulder instability. One end of the artificial ligament is wound into the spacer, after the reset of the upward movement, the artificial ligament will be retracted into the spacer under the action of the tape spring mechanism, and will not be stuck in the joint space. Moreover, the tape spring mechanism can be stretched, so that the movement of the humeral head will not be limited, and it is safe and reliable. BRIEF DESCRIPTION OF DRAWINGS
[0007] Figure 1This is a schematic diagram of the structure of the present invention; Figure 2 This is a side view of the artificial ligament in its fixed state. Detailed Implementation
[0008] See Figure 1 , Figure 2 As shown, an artificial rotator cuff device for a large rotator cuff tear includes a polyethylene pad 3 disposed between the acromion 1 and the glenoid fossa 2. The lower part of the polyethylene pad 3 is supported by the glenoid fossa 2, and the upper part of the polyethylene pad 3 is fixed by two screws 4 penetrating the acromion 1. A measuring tape spring mechanism 5 is installed inside the polyethylene pad 3, and an elongated slot 7 is opened on the outer wall facing the humeral head 6. One end of the artificial ligament 8 is fixed to the outer side of the humeral head 6, and the other end extends into the elongated slot 7 and connects to the measuring tape spring mechanism 5. After the artificial ligament 8 is connected to the measuring tape spring mechanism 5, when the humeral head 6 moves, the artificial ligament 8 is stretched outward. During repositioning, under the action of the measuring tape spring mechanism 5, the part of the artificial ligament 8 that has been pulled out can still retract, and will not be stuck in the joint space between the humeral head 6 and the glenoid fossa 2, ensuring safety. Moreover, the measuring tape spring mechanism 5 is elastic, which allows the artificial ligament 8 to be pulled out smoothly without affecting the movement of the humeral head 6, and is unrestricted.
[0009] The artificial ligament 8 is fixed to the lateral side of the humeral head 6 by two anchors 9.
[0010] In this invention, the acromion 1 and the glenoid 2 are separated, so that when the arm is raised or swung back, the humeral head 6 will not collide with the lower part of the acromion 1, thus relieving pain and allowing the patient to recover joint function in an early stage.
Claims
1. An artificial rotator cuff device under a massive rotator cuff tear, characterized by, It comprises a pad arranged between the acromion and the glenoid cavity, the lower part of the pad is supported on the glenoid cavity, the upper part of the pad is fixed by a screw penetrating through the acromion, a tape spring mechanism is installed inside the pad and a long strip opening groove is arranged on the outer wall of the side of the humeral head, one end of the artificial ligament is fixed on the outer side of the humeral head, the other end extends into the long strip opening groove and is connected with the tape spring mechanism.
2. A below the massive rotator cuff tear artificial rotator cuff device according to claim 1, characterized in that, The artificial ligament is fixed on the outer side of the humeral head by two anchors.
3. A below the massive rotator cuff tear artificial rotator cuff device according to claim 1, wherein, The pad is a polyethylene pad.