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Encircling fixator for curing patella fracture

A technology of patella fractures and fixators, applied in fixers, internal fixators, internal bone synthesis, etc., can solve fracture reduction and fixation that cannot be fully and accurately in place, patella fracture nonunion or delayed union, traumatic patellofemoral arthritis, etc. to protect the blood supply of the patella, facilitate fracture healing, and minimize soft tissue damage

Inactive Publication Date: 2012-05-30
张英泽
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the use of current surgical methods can also lead to incomplete and accurate fracture reduction and fixation, and unsatisfactory fracture reduction and fixation can lead to traumatic patellofemoral arthritis, patella fracture nonunion or delayed union, and patella refracture, etc.

Method used

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  • Encircling fixator for curing patella fracture
  • Encircling fixator for curing patella fracture
  • Encircling fixator for curing patella fracture

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0018] The invention is an appliance capable of holding and fixing a fractured patella.

[0019] Shown in the figure, it is made up of embracing sheet 1 and side fork 2. The embracing piece 1 is a thin strip with a certain curvature, and the curvature of the embracing piece 1 matches the upper or lower periphery of the patella, so that the embracing piece 1 can surround the upper or lower side of the patella 5 . There are a plurality of side forks 2 on both sides of the embracing sheet 1, and the direction of the side forks 2 is along the upper and lower surfaces of the patella 5, and the embracing sheet 1 and the side forks 2 can wrap the upper or lower part of the patella 5. There are a plurality of screw holes 3 on the board surface of the embracing piece 1, through which a Kirschner wire can be driven into the patella 5.

[0020] As shown in the figure, there are folded edges 4 bent inward on both sides of the embracing sheet 1, and the embracing sheet 1 and the folded ed...

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Abstract

The invention relates to an encircling fixator for curing patella fracture and belongs to the technical field of orthopedic medical instruments. The encircling fixator is used for avoiding various complicating diseases and accurately and firmly fixing reduction of the fracture. The invention adopts a technical scheme that: the encircling fixator consists of an encircling slice and side shifts; the encircling slice is a strip slice; the encircling slice is axially provided with radian matched with the upper ambitus and the lower ambitus of patella; both sides of the encircling slice are provided with a plurality of side shifts; the directions of the side shifts are along the upper surface and the lower surface of the patella; and the plate surface of the encircling slice is provided with aplurality of screw holes. The encircling fixation guider has the advantages that: the fixator can temporarily fix the reduction of the patella fracture in a surgery and can further adjust until anatomical reduction if x-rayed fluoroscopy shows that the reduction is dissatisfactory; the screw holes are convenient for the guide needles and screws to be imbedded accurately and finally be fixed firmly; and the encircling fixator can be used in minimally invasive surgeries, has a few soft tissue injuries, and is favorable for protecting blood circulation of the patella and healing fracture. The encircling fixator is a creative medical instrument for curing the patella fracture and is worth of being clinically popularized and applied in orthopaedic departments.

Description

technical field [0001] The invention relates to a device for treating patella fracture, which belongs to the technical field of orthopedic medical devices. Background technique [0002] Patella fracture is a relatively common injury in orthopedics, accounting for 2-3% of all fractures. The important impact of patella fracture is the loss of continuity of the knee extensor device and potential patellofemoral joint mismatch. At present, methods such as Kirschner wire tension band steel wire fixation and patellar claw fixation are mostly used in the treatment of patella fractures. It has been found in a large number of clinical treatments that since the patella is an irregular bone and the fracture is easily comminuted, the current common surgical treatment may be complicated by various complications. According to reports, when the Kirschner wire tension band is used to treat patella fractures, various complications will occur in up to 47% of the cases, such as the skin and su...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B17/68
Inventor 张奇陈伟张英泽
Owner 张英泽
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