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Fixing system for transplant in anterior cruciate ligament reconstruction

An anterior cruciate ligament and fixation system technology, applied in the field of fixation system of grafts in anterior cruciate ligament reconstruction, to achieve the effect of increasing contact area, avoiding cutting, and large fixation strength

Pending Publication Date: 2017-05-24
南京市六合区人民医院
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Problems solved by technology

[0007] The technical problem to be solved by the present invention is: aiming at the technical problems existing in the prior art, the present invention provides a graft fixation system in anterior cruciate ligament reconstruction, which is more conducive to tendon-bone healing and can produce greater fixation strength. It can avoid the disadvantages of exogenous cells causing host immune response and low transformation efficiency

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  • Fixing system for transplant in anterior cruciate ligament reconstruction
  • Fixing system for transplant in anterior cruciate ligament reconstruction
  • Fixing system for transplant in anterior cruciate ligament reconstruction

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Embodiment Construction

[0025] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0026] For the convenience of description, spatially relative terms may be used here, such as "on ...", "over ...", "on the surface of ...", "above", etc., to describe the The spatial positional relationship between one device or feature shown and other devices or features. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, devices described as "above" or "above" other devices or configurations would then be oriented "beneath" or "above" the other devices or conf...

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Abstract

The invention discloses a fixing system of a transplant in anterior cruciate ligament reconstruction. The fixing system comprises a positioner, a guide needle, a hollow drill bit and an expansion screw, the expansion screw is an absorbable expansion screw and comprises an inner nail and an expansion sleeve, protein factors and nano-hydroxyapatite are combined by an absorption method and then compounded with the polythene levo-propionate by a multiple emulsion method to prepare sustained release microspheres, the protein factors are BMP (bone morphogenetic protein)-2, the expansion sleeve is provided with a first through hole along axial direction, the inner nail is provided with a stepped through hole along the axial direction, the diameter of the first through hole is smaller than the minimum diameter of the stepped through hole, the guide needle is provide with a ladder pattern matched with the first through hole and the stepped through hole, and the positioner is provided with a sleeve for penetrating the guide needle. According to the fixing system of the transplant in anterior cruciate ligament reconstruction, tendon-bone healing is facilitated, high fixing strength can be generated, and the fixing system can overcomes the shortcomings of host immune response cause by ectogenic cells, low conversation efficiency and the like.

Description

technical field [0001] The invention relates to the technical field of medical devices in living bodies, in particular to a graft fixation system in anterior cruciate ligament reconstruction. Background technique [0002] The anterior cruciate ligament (ACL) of the knee joint is one of the important static and dynamic stability structures of the knee joint, which can prevent tibial anterior displacement, hyperextension and hyperrotation, and prevent related complications after knee joint instability. ACL injury is a common and frequently-occurring disease, which mainly plagues the majority of adolescents and is one of the most common diseases among adolescents. Instability of the knee joint after ACL injury increases the probability of damage to other joint structures, accelerates the degeneration of the meniscus and articular cartilage, and leads to severe chronic pain and joint dysfunction, seriously affecting the daily activities and quality of life of the patient, and br...

Claims

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Application Information

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IPC IPC(8): A61B17/064A61L31/02A61L31/04A61L31/14A61L31/16
CPCA61L31/028A61L31/048A61L31/148A61L31/16A61B17/0642A61L2300/252A61L2430/06A61L2300/412A61L2300/602C08L67/04
Inventor 刘玉宝林福庆赵清华郭玉祥林禄攀邹瑞蔡小林温传阳施中平张帆胡桂花
Owner 南京市六合区人民医院
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