Bone tunnel preparation device for knee joint ligament reconstruction

A technology for ligament reconstruction and preparation of devices, which can be used in bone drill guidance, medical science, surgery, etc. It can solve the problems of difficult balance of radial force of the blade and difficulty in ensuring the size of the bone tunnel aperture, so as to reduce the diameter of the interface and improve stability. sex, pain relief

Active Publication Date: 2021-06-22
NANJING GENERAL HOSPITAL NANJING MILLITARY COMMAND P L A
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

The multi-piece scissor drill solves the problem that the radial force on the blade is difficult to balance to a

Method used

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  • Bone tunnel preparation device for knee joint ligament reconstruction
  • Bone tunnel preparation device for knee joint ligament reconstruction
  • Bone tunnel preparation device for knee joint ligament reconstruction

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Embodiment Construction

[0035] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0036] Such as figure 1 As shown, the whole internal method is used to reconstruct the anterior cruciate ligament of the knee joint under arthroscopy, and the bone tunnel preparation device used for knee joint ligament reconstruction in the embodiment of the present invention is used to respectively establish a femoral tunnel 3 on the patient's femur 1, and a femoral tunnel 3 on the patient's tibia 2 on the establishment of tibial tunnel 4 . Wherein, the reaming drill bit 5 is installed on the pilot drill bit 6 with the aid of an arthroscope in the joint cavity. After the reamer bit 5 is fixed, reverse drilling is performed to form the femoral tunnel 3 and the tibial tunnel 4 .

[0037] Such as Figure 2-5 The shown bone tunnel preparation device for knee ligament reconstruction uses a power device to drive a pilot drill 6 to drill a first ...

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PUM

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Abstract

The invention relates to the technical field of medical instruments, in particular to a bone tunnel preparation device for knee joint ligament reconstruction. The bone tunnel preparation device comprises a pilot drill bit, a reamer bit and a pull rope. A sliding groove is formed in the cutting section of the pilot drill bit. And the connecting section of the pilot drill bit is connected with a guide pipe for transmitting torque to the pilot drill bit. The pilot drill bit is hollow and connected with the interior of the guide pipe to form a channel for the pull rope to pass through. A connecting key matched with the sliding groove is arranged on the inner wall of the reamer bit. And a fixing device is arranged in the reamer bit. The free end of the pull rope and the fixing device form a locking structure. When the locking structure is in the first form, the free end of the pull rope is locked with the fixing device, and axial constraint is formed on the reamer bit; in the second form, the free end of the pull rope is separated from the fixing device. According to the device, reverse reaming of bone tunnel preparation is achieved, postoperative pain of a patient is relieved, and the knee joint function recovery effect is improved.

Description

technical field [0001] The invention relates to the technical field of medical instruments, in particular to a bone tunnel preparation device for knee joint ligament reconstruction. Background technique [0002] The anterior cruciate ligament of the knee joint, also known as the cruciate ligament of the knee joint, is connected between the femur and the tibia, and is mainly used to limit the forward displacement of the tibia transition, thereby maintaining the stability of the knee joint. ACL ruptures are common sports injuries that often require surgery to rebuild the ACL. The traditional treatment method is to take the semitendinosus tendon and gracilis tendon on the same side of the injured knee; weave the two ends of the tendon with Johnson & Johnson No. 2 wire, and the braiding length is 2cm to form a graft; Locate the tibial insertion point on the knee joint; position the graft on the medial side of the femoral condyle through the tibia, fix the femoral side with a bo...

Claims

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Application Information

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IPC IPC(8): A61B17/16A61B17/17
CPCA61B17/1615A61B17/1622A61B17/1624A61B17/1675A61B17/17A61B17/1764
Inventor 钱洪包倪荣袁涛张雷江辉孟嘉赵建宁
Owner NANJING GENERAL HOSPITAL NANJING MILLITARY COMMAND P L A
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