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Acetabula pre/posterior column fracture fixing device and method

A fixation device, anterior and posterior column technology, applied in the direction of fixator, internal bone synthesis, medical science, etc., can solve the problems of difficult fracture reduction, long operation time, and inability to fix at the same time, so as to avoid blood vessel and nerve damage, reduce operation time, Reduced effects of traumatic arthritis

Active Publication Date: 2016-01-20
郭晓东
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] There are many problems in the current commonly used surgical methods: difficult fracture reduction, difficulty in shaping and placing steel plates after reduction, unreliable fracture fixation, high possibility of soft tissue damage such as blood vessels and nerves, long operation time, large amount of bleeding, and many postoperative complications Wait
Patent CN201831946U discloses an anatomical steel plate in the square area of ​​the acetabular region of the pelvis, including a long plastic steel plate and an integrated baffle, which can prevent fractures of the anterior column of the acetabulum to a certain extent, but there is a displacement of the square area of ​​the acetabulum. Mechanics mismatch in direction, limited blocking force, cannot be fixed at the same time

Method used

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  • Acetabula pre/posterior column fracture fixing device and method
  • Acetabula pre/posterior column fracture fixing device and method
  • Acetabula pre/posterior column fracture fixing device and method

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Embodiment 1

[0056] Such as Figure 2-4 As shown, the present invention designs a fixation device for anterior and posterior column fractures of the acetabulum, which includes: an arcuate edge steel plate 1 and a trapezoidal steel plate 2 used in combination, both of which are roughly equal thickness plates with concavities and convexities Shaped structure, made of medical stainless steel or titanium alloy.

[0057] The arcuate edge steel plate 1 is arranged transversely in a strip shape, and the back is curved to match the anatomical structure of the medial surface below the arcuate edge 18 . Two ilium fixation holes 10 and two pubic bone fixation holes 9 are respectively arranged at both ends of the arcuate edge steel plate 1 . The ilium fixation hole 10 is close to the iliac fossa 13, and the pubic bone fixation hole 9 is arranged on the superior pubic ramus 16.

[0058] In the middle of the top of the trapezoidal steel plate 2, there are four extending fixing arms 6, correspondingl...

Embodiment 2

[0071] In fact, the protruding fixed arm 6 and the protruding fixed arm mounting hole 5 are oppositely disposed on the arcuate edge steel plate 1 and the trapezoidal steel plate 2, for connecting the two steel plates to each other. The bottom end of the protruding fixed arm 6 is arranged on the arc-shaped edge steel plate 1, and the mounting hole 5 of the protruding fixed arm is set on the trapezoidal steel plate 2 to stably connect and fix the two steel plates.

[0072] Such as Figure 5 As shown, on the arcuate edge steel plate 1, two extending fixed arms 6 and two extending fixed arm mounting holes 5 are arranged alternately; on the corresponding trapezoidal steel plate 2, two extending fixed arms 6 and two extending fixed arms 6 are arranged alternately. Two protruding fixed arm mounting holes 5. The bottoms of the two adjacent protruding fixed arms 6 are respectively arranged on the arcuate edge steel plate 1 and the trapezoidal steel plate 2 . Correspondingly, a fixi...

Embodiment 3

[0075] Same as embodiment 2, Such as Figure 6 In the shown embodiment 3, four protruding fixing arms 6 are provided on the arcuate edge steel plate 1; four protruding fixing arms mounting holes 5 are also provided on the corresponding trapezoidal steel plate 2. The bottom of each protruding fixed arm 6 is set on the arcuate edge steel plate 1 . Correspondingly, a fixing hole 24 in the middle of the arcuate edge is provided at the bottom of each protruding fixing arm 6 on the arcuate edge steel plate 1 . The acetabular square window 22 on the trapezoidal steel plate 2 and the corresponding slight downward adjustment of the posterior column window 23.

[0076] In this embodiment, the arcuate edge steel plate 1 and the trapezoidal steel plate 2 are connected to each other through four protruding fixing arms 6 on the arcuate edge steel plate 1 . Other structural design is all identical with embodiment 1.

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Abstract

The invention discloses an acetabula pre / posterior column fracture fixing device and method; the fixing device comprises a bowed edge steel plate and a trapezoid steel plate combined together; the bowed edge steel plate is transversely arranged in a bar shape, and the back curves to match with an anatomical structure in the bowed edge; at least three extension fixing arms are arranged between the top center of the trapezoid steel plate and the bottom center of the bowed edge steel plate; the trapezoid steel plate is arranged below the bowed edge steel plate, and wholly bends to match with an inner anatomical structure above the os ischii and the upper half portion of the acetabula square area. The fixing device can stably reset and fix the acetabula fracture, thus improving fracture reset and inner fixing quality.

Description

technical field [0001] The invention relates to the field of orthopedic medical instruments, more specifically, it relates to a fixation device for fractures of the anterior and posterior columns of the acetabulum. The invention also relates to the use method of the fixing device, which solves the technical problem of how to fix the fracture of the anterior and posterior columns of the acetabulum. Background technique [0002] Acetabular comminuted fractures have always been a difficult problem in trauma orthopedic treatment. The complex blood vessels and nerve structures around the pelvis, the difficulty of exposure, and the small number of screw placement areas all bring difficulties to the anatomical reduction of periacetabular fractures. For complex acetabular fractures, due to severe violence, comminuted fractures of the anterior column or posterior column are often combined with comminuted fractures or severe displacement of the quadrilateral area of ​​the acetabulum....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/80
CPCA61B17/8061A61B2017/564
Inventor 郭晓东
Owner 郭晓东
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