Bone repair and fixation assembly capable of realizing pre-tightening and retreating-stopping

A fixation component and bone repair technology, applied in the field of medical devices, can solve the problems of accidental injury to the muscle tissue and skin around the damaged bone of the patient, the bone plate cannot meet the fixation requirements, and the space for installation tools is small, etc., so as to ensure recovery, Extended effectiveness, reduced contact area effect

Pending Publication Date: 2020-02-18
CHENGDU MEDART MEDICAL SCI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After the existing bone plate screw is implanted in the patient, the external thread on the screw rod is easily degraded and absorbed and becomes invalid, which separates the bone plate screw from the patient's bone body, causing the bone plate to fail to meet the fixation requirements
In addition, the screw head of the existing bone plate screw is used for installation and tightening. The in-line groove, cross-shaped groove or regular hexagonal prism cavity groove is set close to the patient's bone body, and the working contact between the screw head and the installation tool The surface is low, so that the operating space of the installation tool is small. In orthopedic surgery, the installation tool is easy to accidentally injure the muscle tissue and skin around the damaged bone body of the patient, causing some pain to the patient.

Method used

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  • Bone repair and fixation assembly capable of realizing pre-tightening and retreating-stopping
  • Bone repair and fixation assembly capable of realizing pre-tightening and retreating-stopping
  • Bone repair and fixation assembly capable of realizing pre-tightening and retreating-stopping

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Embodiment Construction

[0037] Below in conjunction with accompanying drawing, the present invention is described in detail.

[0038] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0039] A bone repair fixation component that can be pre-tightened and retreated, such as figure 1 and figure 2 As shown, it includes bone plate 1 and bone plate screws 2, said bone plate 1 is provided with several through holes 11, said bone plate screws 2 are penetrated inside the through holes 11, said bone plate 1 and bone plate screws 2 are made of existing absorbable materials such as PDO (polydioxanone), PGA (polyglycolic acid), PLLA (poly-L-lactic acid) and hydroxyapatite. like Figure...

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Abstract

The invention discloses a bone repair and fixation assembly capable of realizing pre-tightening and retreating. The assembly comprises a bone connection plate and bone plate screws, wherein the bone connection plate and the bone plate screws are made of an absorbable material, a supporting surface of a screw head of each bone plate screw is provided with retreating-stopping strips, a plurality ofthrough-holes are arranged on the bone connection plate, a plurality of retreating-stopping teeth which are raised along the tightening direction of the corresponding bone plate screw are arranged around one end of each through-hole, and the retreating-stopping strips and the retreating-stopping teeth are cooperated to restrict the reverse rotation of the bone plate screws. The assembly can effectively fix a fracture site of a patient, and is not easily loosened.

Description

technical field [0001] The invention relates to the field of medical devices, in particular to a bone repair and fixation assembly capable of preloading and preventing retreat. Background technique [0002] In orthopedic surgery, it is usually necessary to use a bone plate to fix the patient's fracture site. The bone plate is fixed and connected to the patient's fracture site by bone plate screws. The existing bone plate screws are easily affected by muscle and tissue movement after being fixed. As a result, the connection between the bone plate and the patient's bone body is unstable, which affects the healing of the patient's fracture site. [0003] Moreover, in the prior art, in order to avoid the need for secondary surgery to remove the bone plate and bone plate screws, both the bone plate and the bone plate screws are made of absorbable materials. The bone plate is required to guarantee 80% of its fixation strength within 6 months after installation. After the existin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/80A61B17/86A61B17/00
CPCA61B17/8052A61B17/8625A61B17/866A61B2017/00004
Inventor 张晓金王吴建王军
Owner CHENGDU MEDART MEDICAL SCI CO LTD
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