Posterior lumbar internal fixation appliance

An orthosis and posterior vertebral approach technology, applied in the field of medical devices, can solve the problems of difficult removal, lack of biological activity of bone cement, and difficulty in removing internal fixation.

Pending Publication Date: 2019-01-11
厉锋
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there are still some defects in this technology: 1. The bone cement lacks biological activity: after the bone cement is injected, a bone cement interlayer is formed between the screw and the bone interface; this layer of bone cement lacks biological activity and cannot be absorbed, and bone cement may

Method used

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  • Posterior lumbar internal fixation appliance
  • Posterior lumbar internal fixation appliance
  • Posterior lumbar internal fixation appliance

Examples

Experimental program
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Embodiment Construction

[0022] The lumbar posterior internal fixation orthosis of the present invention comprises a threaded uniaxial pedicle screw 1, and a long tail nail seat 2 fixedly arranged on the upper end of the uniaxial pedicle screw 1 for installing a longitudinal connecting rod. The long tail nail seat 2 is provided with a short tail nail seat 7 for installing a transverse connecting rod 9 .

[0023] Such as figure 1 As shown, when in use, a longitudinal connecting rod 8 is installed on the long tail nail seat 2, and the other end of the longitudinal connecting rod 8 is installed in the long tail nail seat at the upper end of another uniaxial pedicle screw, and the two ends of the longitudinal connecting rod 8 The uniaxial pedicle screws are respectively screwed into two different vertebral bodies; in addition, a transverse connecting rod 9 is installed on the short tail screw seat 7, and the other end of the transverse connecting rod 9 is installed on the short end of the upper end of ano...

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PUM

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Abstract

The invention relates to the technical field of medical devices, in particular to a posterior lumbar internal fixation appliance, comprising a uniaxial pedicle screw with threads, a long tail nail holder arranged at the upper end of the uniaxial pedicle screw for mounting a longitudinal connecting rod, and a short tail nail holder arranged on the long tail nail holder for mounting a transverse connecting rod. The posterior lumbar internal fixation appliance has the advantages of simple structure, convenient use, high holding force of screw, and not easy to be prolapsed, and is particularly suitable for the surgical treatment of osteoporosis combined with lumbar vertebral diseases. The misaligned vertebral body can be restored by using the high holding force of screw during the operation, so as to achieve the purpose of correcting the deformity.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a lumbar posterior internal fixation orthosis. Background technique [0002] At present, for various forms of lumbar diseases such as spinal fractures, degeneration, tumors, and inflammations, the pedicle screw-rod system is often used for fixation treatment; the existing lumbar posterior pedicle screw system consists of a pedicle screw and a The connecting rods on the pedicle screws are composed of two pairs of pedicle screws that are screwed into two different vertebral bodies respectively during use, and the two connecting rods are longitudinally connected between the two pairs of pedicle screws to play a role of connection and fixation role. For example, the "Posterior Lumbar Internal Fixation Device" disclosed in Chinese Patent 2010205759082 and the "Dynamic Posterior Lumbar Fixation Device" disclosed in Chinese Patent 2012200237653. These fixation devices only hav...

Claims

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Application Information

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IPC IPC(8): A61B17/70
CPCA61B17/7032A61B17/7041
Inventor 厉锋
Owner 厉锋
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