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Bio-flexible spinal fixation apparatus with shape memory alloy

A technology of fixation device and memory alloy, which is applied in the direction of fixator, internal fixator, internal bone synthesis, etc., and can solve problems such as surgical defects

Inactive Publication Date: 2006-03-29
朴 庆佑
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Omitting the transverse link 400 even when it is difficult to install the transverse link 400, resulting in surgical defects

Method used

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  • Bio-flexible spinal fixation apparatus with shape memory alloy
  • Bio-flexible spinal fixation apparatus with shape memory alloy
  • Bio-flexible spinal fixation apparatus with shape memory alloy

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Experimental program
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Embodiment Construction

[0061] Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. The spinal fixation device in the present invention adopts longitudinal rods and transverse connecting rods made of shape memory alloy, which can easily correct the injured spine. In particular, the longitudinal and transverse links are made of Nitinol (a nickel-titanium alloy) that is super elastic.

[0062] The following will refer to Figure 5 to Figure 14 The first embodiment is discussed in detail.

[0063] In the first embodiment of the present invention, the spinal fixation device includes the following parts: several pedicle screws 1 implanted in the patient's vertebrae; Longitudinal bars 2; several transverse links 3 separating the longitudinal bars 2.

[0064] see now Figure 5 to Figure 7 There is a screw head 11 on the top of the pedicle screw 1, and there is a thread 13 under the screw head, which is used for implanting in the vertebrae. There is...

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PUM

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Abstract

The present invention relates to a spinal fixation apparatus having a segment flexible rod for connecting pedicle screws and a transverse link for spacing out the rods, which are made from a shape memory alloy, thereby easily and simply connecting the rods and the pedicle screws. According to the present invention, it can easily and simply fit the rods to the misaligned pedicle screw, even if it may be a failure of alignment of the pedicle screws in surgery. Also, it can easily set up the transverse link on a pair of the longitudinal rods, even if the longitudinal rods are declined or are not in parallel.

Description

technical field [0001] The present invention relates to a spinal fixation device, which can correct and fix the injured human spine; more uniquely, it also relates to a spinal fixation device that facilitates spinal surgery, which uses shape memory alloy The flexible longitudinal rod and the transverse connecting rod enable the longitudinal rod and the lateral connecting rod to be elongated to flexibly adapt to the fixation of injured spines of different shapes. Background technique [0002] In general, the spine is made up of 24 bones (excluding the sacrum). They are connected to each other through joints, and there are disc parts between the joints. Thanks to this structure, the spine enables a person to maintain a certain posture and absorb certain impact forces. Since the spine is also important for movement, it protects all internal organs from external shocks. However, the vertebrae of the spine can also be injured or sprained by factors such as the external environ...

Claims

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Application Information

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IPC IPC(8): A61B17/70
CPCA61B17/7028A61B17/7032A61B17/7052A61B2017/00867
Inventor 朴庆佑
Owner 朴 庆佑