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Bone cement injector

A technology of injector and bone cement, applied in the direction of the fixer, can solve the problems of internal fixation failure, internal fixation looseness, easy failure, etc., and achieve the effect of easy control, convenient operation and simple structure

Pending Publication Date: 2017-10-20
HUNAN KUANGCHU TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Osteoporotic fractures are common clinically. After surgery, the loose bone cannot provide sufficient holding force for the internal fixation device, and the internal fixation is prone to loosening, withdrawal and cutting of the bone, resulting in internal fixation failure and fracture nonunion. Improving the fixation strength of osteoporotic fracture internal fixation, choosing a relatively firm internal fixation method has become the focus of our attention
[0003] In the treatment of some fractures that require surgery, such as: joint fractures, odontoid processes, etc., it is necessary to achieve strong fixation of the fracture through lag screws and pressure. It is easy to fail, so choosing a suitable internal fixation has always been a hot spot for many orthopedic surgeons

Method used

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  • Bone cement injector
  • Bone cement injector
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Embodiment Construction

[0017] The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0018] Such as figure 1 , figure 2 , image 3 , Figure 4 , Figure 5 As shown, the bone cement injector of this embodiment includes a needle assembly 1, a syringe 2, a piston rod assembly 3 and a measuring assembly 4. The needle assembly 1 includes a valve core 11 installed in the head of the syringe 2 and a valve core installed in the valve The adjustment knob 12 on the core 11 is provided with an axial through hole. The valve core 11 includes a valve core housing fixedly installed in the head of the syringe 2, a fixed piece fixed in the valve core housing and a movable installation. There are eccentric holes on the moving piece, the fixed piece and the moving piece in the valve core shell, the contact surface of the fixed piece and the moving piece is very smooth, and the processing accuracy is required to be less than 5 wires, and t...

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Abstract

The invention relates to the technical field of medical treatment for orthopedic operation, in particular to an injector capable of finely adjusting the bone cement injection amount. The bone cement injector comprises a syringe needle assembly, a needle cylinder, a piston rod assembly and a measuring assembly. The piston rod assembly comprises a coarse adjustment piston and a fine adjustment piston sleeved with the coarse adjustment piston. The measuring assembly comprises a fixing block installed at the tail end of a fine adjustment piston rod and a flexible rule body installed inside the fixing block. The bone cement injector is simple in structure, convenient to operate and capable of directly reading the real-time bone cement injection amount in the operation process, the size of an injection opening can be better adjusted, the bone cement injection amount and speed can be adjusted by means of the fine adjustment piston, and the total bone cement injection amount is controlled conveniently.

Description

technical field [0001] The invention relates to the field of medical technology for orthopedic surgery, in particular to an injector capable of finely adjusting the injection amount of bone cement. Background technique [0002] With the acceleration of the aging process of the social population, the incidence of osteoporotic fractures is increasing year by year. Osteoporotic fractures are common clinically. After surgery, the loose bone cannot provide sufficient holding force for the internal fixation device, and the internal fixation is prone to loosening, withdrawal and cutting of the bone, resulting in internal fixation failure and fracture nonunion. Improving the fixation strength of osteoporotic fracture internal fixation and choosing a relatively firm internal fixation method have become the focus of our attention. [0003] In the treatment of some fractures that require surgery, such as: joint fractures, odontoid processes, etc., it is necessary to achieve strong fix...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/88
CPCA61B17/8822A61B17/8825
Inventor 肖坤坚
Owner HUNAN KUANGCHU TECH CO LTD