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Angled locking steel plate

A steel plate and angulation technology, applied in the field of internal fixation plates, bone plates, and internal fixators, can solve the problems of fracture of bone plates and screws, obstructing the blood circulation of the periosteum, and detrimental to the early recovery of patients, so as to eliminate the pressure on the plate and the bone. Contact, fixation effect is good, the effect of eliminating adverse effects

Inactive Publication Date: 2006-12-06
戚珊红
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The disadvantages of using the above-mentioned internal fixator to treat fractures are: 1. Because the inner surface of the bone plate is very smooth, when the screw is tightened, the smooth inner surface of the bone plate is pressed tightly on the periosteum outside the bone, seriously hindering the blood circulation of the bone plate In severe cases, periosteal tissue necrosis is caused; in mild cases, bone healing is affected, which is not conducive to the early recovery of patients
2. Because the shape of the bone is generally not very regular, but the inner surface of the bone plate is very smooth, so when the bone plate and the bone are fixed together, the force will be uneven, which will easily cause the bone plate and screws to break

Method used

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Examples

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Embodiment

[0023] Embodiment: See accompanying drawings 1 to 3, an angled locking steel plate is composed of a strip-shaped bone-synthetic steel plate (1) and several screws (3). The cross-section of the steel plate (1) is arc-shaped. The steel plate (1) is provided with several screw holes (2) in the length direction, each screw hole (2) is located in the longitudinal direction of the steel plate (1), and the center line (4) of the screw hole (2) is aligned with the steel plate (1) ] The inner surface center line (5) is angled, and the screw holes are staggered with each other successively. Screw (3) is a half-thread self-tapping screw, and the diameter of the screw polished rod (6) is identical with the diameter of self-tapping thread (7), and identical with the diameter of screw hole (2). The top of the screw head is provided with an inner hexagonal loading and unloading opening. During the process of screwing the screw into the cortical bone of the plate, the polished rods of multi...

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Abstract

An angularly locking steel plate for setting-up bone is composed of a steel plate with several screw holes staggered at intervals and several self-tapping screws with spiral semi-threads. A certain included angle between the central lines of said screw hole and the internal surface of steel plate exists.

Description

technical field [0001] The invention relates to an orthopedic medical device, in particular to an internal fixator used for bone fixation during fracture, also known as internal fixation plate, bone plate and the like. Background technique [0002] In the treatment of fractures, surgery is often required to correct the fractures and fix them with internal fixation instruments. The most common traditional internal fixator is mainly composed of elongated bone plate (or steel plate) and screws. It depends on the length of the body. When using it, first place the bone plate at a suitable position so that the inner surface of the arc-shaped plate contacts the bone, and then insert the screw into the oblong hole and screw it into the bone vertically. The interaction between the inclined surface and the screw promotes the correct docking of the injured bone on both sides, so that the bone plate and the injured bone are in close contact and fixed together, so as to achieve the purp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/58A61B17/80
Inventor 戚珊红
Owner 戚珊红
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