Kirschner wire positioning instrument for pelvic fracture closed reduction

A pelvic fracture and Kirschner wire technology, applied in the direction of internal bone synthesis, fixator, medical science, etc., can solve problems such as adjustment that affects precision, reduce the operating threshold, improve convenience and efficiency, improve accuracy and safety effect

Pending Publication Date: 2020-11-03
THE SECOND AFFILIATED HOSPITAL OF ANHUI MEDICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the ideal direction and position of the second guide pin were determined during the operation, due to the interference of soft tissues, the elasticity of the guide pin, or the technique of the surgeon, the precise adjustment was affected, and the ideal position was often not satisfactorily achieved.

Method used

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  • Kirschner wire positioning instrument for pelvic fracture closed reduction
  • Kirschner wire positioning instrument for pelvic fracture closed reduction
  • Kirschner wire positioning instrument for pelvic fracture closed reduction

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0030] For ease of understanding, the initial Kirschner wire or hollow needle is collectively referred to as the reference needle a, and the position of the reference needle a is used as a reference to position the punctured Kirschner wire as a new needle b; , the concrete structure and working mode of the present invention are further described as follows:

[0031] The specific structure of the present invention refers to Figure 1-6 As shown, its main structure includes three parts: reference ring 10, adjustment ring 20 and adjustment rod 30 connected to each other, wherein:

[0032] The reference ring 10 is used to realize the socket function of the reference needle a, thereby forming the anchor point structure of the present invention, and the overall subsequent actions of the adjustment ring 20 are mechanically operated according to the anchor point structure. Datum ring 10 shape reference figure 1 As shown, it is in the shape of a ring, and the ring cavity fits tightly...

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Abstract

The invention belongs to the field of operation auxiliary tools, and particularly relates to a kirschner wire positioning instrument for pelvic fracture closed reduction. The kirschner wire positioning instrument comprises a reference ring, wherein an adjusting ring is arranged beside the reference ring, a spherical cavity section is arranged in an annular cavity of the adjusting ring, a sphericalhead is arranged in the spherical cavity section in a spherical fit manner, a positioning hole allowing a kirschner wire to penetrate through is coaxially formed in the spherical head relative to theadjusting ring in a penetrating manner, and the hole diameter of the positioning hole cooperates with the outer diameter of the kirschner wire to be penetrated through; and the reference ring and theadjusting ring are fixedly connected with each other through an adjusting rod capable of adjusting the length in the axial direction, and the lower ring surface of the adjusting ring and the lower ring surface of the reference ring are located on the same reference plane. Through the kirschner wire positioning instrument, the proper distance and angle can be quantitatively achieved, the operationaccuracy and safety are greatly improved, the radiation damage to a doctor and a patient due to long-time repeated fluoroscopy is reduced, and convenience and efficiency of an actual pelvic fractureclosed reduction operation are improved.

Description

technical field [0001] The invention belongs to the field of surgical aids, in particular to a Kirschner wire locator for closed reduction of pelvic fractures. Background technique [0002] Pelvic fracture is a type of fracture with a high fatality rate caused by high-energy external force. It is more common in young adults, and is often seen in car accidents and falls from heights. The types of fractures are complex. If good reduction and fixation cannot be obtained, patients often need to stay in bed for a long time or have walking and labor dysfunction. Most of the previous surgical methods were open reduction and internal fixation, with a large surgical incision and a wide range of exposure, and a large amount of intraoperative blood loss and high surgical risk. [0003] In recent years, with the in-depth research on the anatomical structure of the pelvis and the development of internal fixation materials, closed reduction and internal fixation have become the main tren...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/88A61B17/84A61B17/86
CPCA61B17/846A61B17/864A61B17/8897A61B17/90
Inventor 姚运峰方望薛晨曦高强李家乐荆珏华
Owner THE SECOND AFFILIATED HOSPITAL OF ANHUI MEDICAL UNIV
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