Fast drawing extension rod

An extension rod and fast technology, applied in the field of connecting rods, can solve the problems of high manufacturing cost, high use price, axial and comprehensive stress stimulation of bone external fixator, etc., so as to ensure the quality of surgical treatment, low cost, and reduce workload. Effect
CN103445834BActive Publication Date: 2015-05-13JIANGSU GUANGJI MEDICAL TECH
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Patent Information

Authority / Receiving Office
CN ¡ China
Patent Type
Patents(China)
Current Assignee / Owner
JIANGSU GUANGJI MEDICAL TECH
Publication Date
2015-05-13

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Abstract

The invention provides a fast drawing extension rod, which is connected between two hole rings in an external fixator, and comprises a threaded rod, an inner sleeve rod and an outer sleeve rod, wherein the threaded rod is inserted into the inner sleeve rod from top to bottom, the inner sleeve rod is inserted into the outer sleeve rod from top to bottom, the lower end of the outer sleeve rod is provided with threaded connecting pieces for hole ring connection, the upper end of the inner sleeve rod is provided with an outer flange, a pressure controller is arranged between the upper end part of the inner sleeve rod and the threaded rod, the inner side wall of the upper end part of the outer sleeve rod is provided with a cone-shaped opening, the outer side wall of the upper end part of the outer sleeve rod is provided with an outer thread section, and a locking joint is arranged between the upper end part of the outer sleeve rod and the inner sleeve rod. The fast drawing extension rod can meet the requirements of performing rigid fixation in the early stage of fracture, providing elastic fixation with axial and comprehensive stress stimulation in the middle stage of fracture and providing balanced fixation in the later stage, and compared with the prior art, the fast drawing extension rod is easier to use.
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Description

technical field

[0001] The invention relates to a connecting rod applied on a bone external fixator. Background technique

[0002] In the process of modernization of medical technology, the material and structure of bone external fixator have made great progress. The outstanding one is undoubtedly the hole ring type external fixator invented by Russian medical expert Ilizarov, the hole ring type external fixator and fine steel The needle stretching technology has changed the texture of the mechanical action mode and mechanical biological properties of the original external fixator, improved the regulation performance, and expanded the indications. It is a major advancement in the field of external fixator technology. Ilizarov's technology has also stimulated countless orthopedic surgeons' interest in learning, researching and applying external bone fixation technology. Later, Dror Paley in the United States compiled "Principles of Orthopedic Surgery", creatively applying the...

Claims

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