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Lumbosacral anterior plate fixing device

A fixation device and steel plate technology, applied in the field of fixation implants, can solve problems such as stress shielding, cumbersome operation, and high difficulty, and achieve the effect of reducing operation steps, simplifying operation steps, and good device fit

Inactive Publication Date: 2014-06-25
SHANGHAI MICROPORT ORTHOPEDICS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, one of the existing products of Syndis Company is to lock the steel plate and the screw through threads. The disadvantage of this design is that it has stress shielding.
Medtronic's existing product is to add a pressure plate, press the screw, and then use locking screws to fix the pressure plate and the steel plate together. The disadvantage of this design is that the operation is cumbersome and difficult, because when installing the pressure plate , the pressure plate slides easily into the body

Method used

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  • Lumbosacral anterior plate fixing device
  • Lumbosacral anterior plate fixing device
  • Lumbosacral anterior plate fixing device

Examples

Experimental program
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Effect test

Embodiment Construction

[0048] Preferred embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0049] like Figure 1~4 As shown, the anterior lumbosacral plate fixation device of the present invention includes a plate 1 and a screw 2, wherein the plate 1 is provided with a screw hole 4 . exist Figure 1~4 In the embodiment of the invention, the steel plate 1 is substantially rectangular, and four screw holes 4 are provided at approximately four corners of the rectangle. The screw 2 is used to fix the steel plate 1 to the vertebral body of the human body. like Image 6 As shown, the screw 2 is composed of a screw head 6 and a screw body 11, the screw head 6 and the screw body 11 are integrally formed, and the outer periphery of the screw body 11 is threaded for fastening the screw 2. The screw body 11 of the screw 2 can pass through the screw hole 4, and the screw head 6 of the screw 2 can be accommodated in the screw hole 4 of the steel ...

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Abstract

The invention provides a lumbosacral anterior plate fixing device. The lumbosacral anterior plate fixing device comprises a steel plate and screws, the steel plate is provided with screw holes, and the head portion of every screw can be accommodated into the corresponding screw hole. The lumbosacral anterior plate fixing device is characterized in by also comprising locking caps, the steel plate is provided with locking cap holes adjacent to the screw holes, and the locking caps are retained inside the locking cap holes in a rotatable mode; each locking cap is provided with a concave-surface portion and a convex-surface portion along the circumference, in a locking cap first rotating position of the concave-surface portion of the locking cap, which faces towards the corresponding screw holes, the locking cap does not block the corresponding screw holes, and in a locking cap second rotating position of the convex-surface portion of the locking cap, which faces towards the corresponding screw holes, the convex-surface portion can press the head portions of the corresponding screws in the corresponding screw holes. According to the technical scheme, the lumbosacral anterior plate fixing device can simplify surgical processes, reduce surgical operation difficulty and obtain a compact structure.

Description

technical field [0001] The invention relates to a fixed implant in the field of medical instruments, which is applied to orthopedic spine treatment operations. In particular, the present invention relates to a lumbosacral anterior plate fixation device. Background technique [0002] The human spine is an organic whole structure formed by connecting vertebrae. The vertebrae include 7 cervical vertebrae, 12 thoracic vertebrae, 5 lumbar vertebrae, 5 sacral vertebrae and 4 coccygeal vertebrae. Fractures, dislocations, and lateral processes are prone to occur between the fifth lumbar vertebra and the first sacral vertebra. If a fracture, dislocation, or lateral protrusion occurs, it should be fixed in time to restore its normal physiological state and stability. In the past decade, common fixation methods include: posterior sacral rod fixation, lag screw fixation, and anterior plate fixation. [0003] Posterior sacral rod fixation requires bilateral posterior superior iliac sp...

Claims

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Application Information

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IPC IPC(8): A61B17/70A61B17/80A61B17/86
CPCA61B17/7055A61B17/84A61B17/8042A61B17/7059A61B17/7001A61B17/8052A61B17/86
Inventor 高耀平田芳林忠陈伟
Owner SHANGHAI MICROPORT ORTHOPEDICS
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