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A composite bioactivated anterior cruciate ligament fixation nail

An anterior cruciate ligament and bioactivation technology, applied in the field of biomanufacturing, can solve the problems of uncertain anti-fatigue effect, inability to solve problems, bone tissue healing, etc., to avoid the decrease of fixation force, reduce biological fixation, and facilitate implantation.

Active Publication Date: 2016-11-23
SUSHENG BIOTECH (HAINAN) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this kind of fixation nail made entirely of PEEK material cannot heal with bone tissue early, and the long-term anti-fatigue effect is still uncertain
Unable to solve the problems existing in the previous fixation of the cruciate ligament

Method used

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  • A composite bioactivated anterior cruciate ligament fixation nail
  • A composite bioactivated anterior cruciate ligament fixation nail
  • A composite bioactivated anterior cruciate ligament fixation nail

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] The structural schematic diagram of the anchor nail and the inner core in the present invention is as follows figure 1 , 2 As shown, the anchoring nail is a double-leg column expansion design, with a hollow ring at the top and a barbed thread. The inner core is in the shape of an I-shape. When the inner core is inserted into the anchoring nail, the anchoring nail's two legs can realize expansion, which can enhance the fixing strength at the initial stage of implantation. The inner edge of the anchoring nail leg is designed with a 45° angle, which is conducive to accurate positioning (secondary positioning) when the anchoring nail is assembled with the inner core. This together with the primary positioning not only ensures the anchoring nail and inner core assembly Accurate, and can also ensure the tight combination of the anchor nail and the inner core, and prevent the rotation between the accessories. Part of the inner core area is exposed and directly contacts the bony...

Embodiment 2

[0026] On this basis, the present invention derives a fixation nail specially used for autologous tendon transplantation to repair ligaments. Similar to the above, it also includes an anchor nail and an inner core. The inner core is in the shape of an I-shaped, and the anchor nail is The double-leg column expansion structure, the top is an I-shaped inner core with the same cross section, such as Image 6 Shown. The anchor nail can be inserted into the inner core and fit closely with it, such as Figure 7 Shown. This structure can ensure that the autologous tendon has a larger contact surface with the autologous bone, thereby ensuring better healing. The materials of the anchor nail and the inner core are the same as above. Further mechanical tests and animal experiments are in progress.

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Abstract

The invention discloses a composite bioactive type anterior cruciate ligament fastening nail which comprises an anchoring nail and an inner core. The anchoring nail is of a double-legged pillar expansion type structure, and the inner hole is in an H shape and can be inserted between two leg pillars of the anchoring nail to be tightly matched with the anchoring nail. The inner core is made of biological ceramic materials, and the anchoring nail is made of polyether-ether-ketone or polylactic acid or polycaprolactone or titanium alloy or magnesium alloy. The composite bioactive type anterior cruciate ligament fastening nail can provide a winding and fixing pivot for implantation of ligaments; furthermore, by means of the good bone induction and bone conduction capability of the composite bioactive type anterior cruciate ligament fastening nail, in the early stage after the fastening nail is implanted, adhesion and proliferation of osteoblast in a bony channel can be achieved, autologous bone tissue is made to grow into the fastening nail quickly, and biological fixation is achieved.

Description

Technical field [0001] The invention relates to the field of biomanufacturing, in particular to methods for bone and ligament tissue engineering and early fixation and reconstruction of cruciate ligaments. Background technique [0002] The anterior cruciate ligament is based on a special anatomical position and structure, and it bears huge stress in daily life and sports activities. It is the most vulnerable ligament in human body. Studies have shown that 250,000 cases of anterior cruciate ligament injuries are diagnosed in the United States each year, of which 75,000 cases receive ligament reconstruction treatment. At present, the main clinical treatment of anterior cruciate ligament injury is autologous popliteal muscle transplantation and patellar tendon translocation. Both of these surgical methods require the use of squeezing fixation nails to fix the tendon to the preset bony tunnel. A variety of materials are used to make this kind of fixing nails, such as metal fixing n...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B17/56A61L31/06A61L31/02
CPCA61B17/0401A61B2017/00004
Inventor 李翔贺健康边卫国李涤尘
Owner SUSHENG BIOTECH (HAINAN) CO LTD
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