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

Active Publication Date: 2015-05-13
JIANGSU GUANGJI MEDICAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a fast-stretching extension rod that can meet the requirements of strong fixation in the early stage of fracture, elastic fixation with axial and comprehensive stress stimulation in the middle stage, and balanced fixation in the later stage. Compatibility (reasonableness of mechanobiological environment) of energy (tissue regeneration), and solve the problems of high manufacturing cost and expensive use of traditional bone external fixators

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0063] Embodiment one sees Figure 1-7 As shown, this fast stretching extension rod is connected between two hole rings in the external bone fixator, and is characterized in that it includes a threaded rod 1, an inner rod sleeve 2 and an outer rod sleeve 3, and the thread The rod 1 is inserted into the inner rod sleeve 2 from top to bottom, and the inner rod sleeve 2 is inserted into the outer rod sleeve 3 from top to bottom, and the lower end of the outer rod sleeve 3 is provided with a threaded connection with the hole ring. piece 12.

[0064] In this embodiment, the lower end of the outer rod sleeve 3 is provided with a multi-directional hinged joint, and the threaded connector 12 is provided on the multi-directional hinged joint. The multi-directional hinged joint is composed of a connecting seat 18, a hinged lug 17, a middle pin 16, a shaft sleeve 15 and a pin shaft 14, wherein the hinged lug 17 is arranged at the lower end of the outer rod sleeve 3, and the shaft sleeve...

Embodiment 2

[0069] Embodiment two see Figure 8-10 , the difference from Embodiment 1 is that the lower end of the outer rod sleeve 3 does not have a multi-directional hinge joint, and the threaded connector 12 is an internally threaded hole directly arranged at the lower end of the outer rod sleeve (this embodiment is directly on the outer rod sleeve 3 A nut is welded to the lower end). Certainly, in other embodiments, the threaded connecting member 12 may also be an externally threaded rod or the like.

[0070] The link aspect of the present invention and various articulators is the same as the traditional one, and there are many types of cooperation. Its application is reflected in multidimensional orthopedics. see Figure 14-18 , said embodiment one can be applied in Taylor space frame, also can be applied in ankle joint coronal plane osteotomy orthosis, ankle joint coronal plane draft deformity orthosis, ankle joint coronal plane compound deformity orthosis, equinus orthosis In o...

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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.

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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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B17/62
Inventor 夏和桃李刚唐佩福彭爱民王坤正夏洪菁
Owner JIANGSU GUANGJI MEDICAL TECH
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