Compression fixing nail for single-tunnel double-bundle reconstruction of cruciate ligaments

A cruciate ligament, extrusion fixation technology, applied in the field of medical devices, to achieve the effect of increasing effective fixation force, reducing risk, and increasing the ability of tendon and bone healing

Inactive Publication Date: 2014-04-02
吕宏升
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no optimal reconstruction method, and it is very meaningful to develop a new and effective fix

Method used

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  • Compression fixing nail for single-tunnel double-bundle reconstruction of cruciate ligaments
  • Compression fixing nail for single-tunnel double-bundle reconstruction of cruciate ligaments
  • Compression fixing nail for single-tunnel double-bundle reconstruction of cruciate ligaments

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Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0022] refer to Figure 1 to Figure 4 As shown, an extruded fixation nail for single-tunnel double-bundle reconstruction of the cruciate ligament includes a fixation nail body 1, and a side of the fixation nail body 1 protrudes to form a beam splitting fin 11 extending along its length direction, and the fixation nail body 1. The lower end is small and the upper end is larger, and the upper and lower ends have a streamlined and smooth transition. The cross-section is drop-shaped. The upper part of the beam splitting fin 11 is formed with anti-skid teeth 12. The fixing nail body 1 is also on the other side of the beam splitting fin 11. Anti-skid teeth 13 are formed, and the diameter of the circle where the two anti-skid teeth 12 and 13 are located is slightly larger than the diameter of the tunnel 4 .

[0023] A vertically extending positioning screw hole 14 and a laterally extending "one"-shaped positioning groove 15 are formed on the upper surface of the fixing nail body 1. T...

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Abstract

A compression fixing nail for single-tunnel double-bundle reconstruction of cruciate ligaments comprises a fixing body. The compression fixing nail is characterized in that the side face of the fixing nail body protrudes to form a splitting fin extending along the length direction of the fixing nail body; the upper end and the lower end of the big-end-up fixing nail body is in streamline smooth transition, and the cross section of the fixing nail body is water-drop-shaped; slip prevention teeth are formed on the upper section of the splitting fin. By the compression fixing nail for single-tunnel double-bundle reconstruction of the cruciate ligaments, the tendons can be close to anatomy stop-point stress areas, and requirements on anatomy reconstruction are met well; when the compression fixing nail is used together with a belt-carrier steel plate, the tendons are re-distributed at anatomy functional positions while good fixing force is guaranteed.

Description

technical field [0001] The invention relates to the field of medical instruments, in particular to a fixing nail used for single-tunnel double-bundle reconstruction of cruciate ligament. Background technique [0002] Arthroscopic reconstruction of the anterior cruciate ligament (ACL) of the knee has become the consensus of orthopedic surgeons, but there are still many controversies about whether to use single-bundle or double-bundle reconstruction. Many scholars believe that double-bundle reconstruction has good biomechanical advantages, especially increasing the rotational stability of the knee joint. However, it has also been reported that the double-beam effect is not better than the single-beam effect. Double-bundle reconstruction is currently a commonly used method using double-tunnel double-bundle reconstruction, but double-tunnel reconstruction requires two bone tunnels at the femoral end, which is technically difficult, and it is difficult to determine the correct c...

Claims

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Application Information

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IPC IPC(8): A61B17/56
CPCA61F2/0811A61F2002/0817
Inventor 吕宏升
Owner 吕宏升
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