Integrated fixing device for olecranal fracture

Abstract

The invention discloses an integrated fixing device for an olecranal fracture. The integrated fixing device comprises a banded knitted part and a rope bolt, wherein one end of the banded knitted part is connected with the tail end of the rope bolt; the other end of the banded knitted part is connected with a traction needle; the rope bolt is arranged in an olecranal fracture part for connection; and the banded knitted part is pressed on the olecranal fracture part and is tightened and fixed. The integrated fixing device has excellent biocompatibility; stimulation of implants to the implanted part is avoided; the difficulty that the implants need to be taken out by a secondary operation is avoided; the banded knitted part has relatively low elasticity modulus; blood supply of the fixed part is effectively protected when efficient fixation is provided; the postoperative pain of a patient is reduced; the recovery cycle of the patient is shortened; the banded knitted part provides an effective fixing mode for the slight comminuted olecranal fracture; and in addition, 'minimally invasive idea' is introduced, so that the problems that a previous surgery is complicated in operation, large in wound, serious in post operational pain and local stimulation and the like are solved.

Description

technical field [0001] The invention relates to the technical field of medical device design, in particular to an integrated fixation device for olecranon fractures. Background technique [0002] The subcutaneous protrusion behind the proximal end of the ulna is called the olecranon, which forms a semilunar notch with the coronoid process of the front ulna. This notch just forms the ulnar-humeral joint with the trochlea of ​​the humerus, and the ulnar-humeral joint can only flex and extend. Olecranon fractures refer to intra-articular fractures involving the semilunar notch. Olecranon fractures are intra-articular fractures that are often associated with fractures and soft tissue injuries in other parts. Fracture reduction requires high requirements, and early functional training is required after surgery. [0003] At present, the commonly used surgical method for the treatment of such fractures is Kirschner wire tension band fixation. The principle of this operation method...

AI Technical Summary

Problems solved by technology

[0004] The defect of this surgical method is that there are many soft tissues under the steel wire, and the operator feels a lot of pressure from the tension band during the operation. However, with the recovery of joint function and repeated pressure, the soft tissue under the steel wire will be missing. Blood necrosis, liquefaction, absorption, and fibrosis make the steel wire of the tension band loose and fail to play the role of dynamic compression, resulting in failure of fixation

[0005] There is also a defect that the Kirschner wire will protrude under the skin, causing pain and discomfort to the patient, causing Kirschner wire migration, slippage, loosening, wire breakage, skin infection, etc. The operation is complicated and the trauma is large, and a second operation is required to remove the internal organs. fixed

[0006] For patients with comminuted fractures, especially those with coronoid fractures involving the radial head, internal fixation with Kirschner wire tension bands cannot achieve anatomical reduction, and too tight tension bands can easily lead to large sliding and compression displacements between fracture fragments. position, resulting in abnormal alignment between the trochlear olecranon joints, affecting joint function, and eventually leading to traumatic arthritis in patients

Studies have shown that internal fixation with Kirschner wire tension bands can easily lead to shortening or compression of the olecranon, making the half-lunar notch and trochlear articular surface inconsistent, resulting in malunion of fractures and osteoarthritis

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