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Memory alloy auto-distraction locking interbody fusion cage and application method thereof

A technology of intervertebral fusion device and memory alloy, which is applied in the field of medical devices, can solve the problems of increasing the possibility of postoperative infection and nerve injury, prolonging the operation time and intraoperative blood loss, and accelerating the degeneration of adjacent segments, so as to shorten the Effects of operation time and intraoperative blood loss, reduction of postoperative infection, and reduction of economic burden

Inactive Publication Date: 2015-07-15
潘滔
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, internal fixation with pedicle screws or steel plates and screws provides sufficient support but also causes stress shielding, which can easily lead to adverse consequences such as osteolysis and osteoporosis.
Moreover, due to the addition of pedicle screw or plate screw fixation, it not only greatly increases the trauma of the operation process, but also increases the possibility of postoperative infection and nerve damage; it also greatly increases the difficulty of the operation, prolongs the operation time and the Moderate blood loss, and bring a heavier economic burden to patients
In addition, due to the restriction of the activity of the vertebral body, it is easy to accelerate the degeneration of adjacent segments, which greatly reduces the quality of life of patients, especially young patients.

Method used

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  • Memory alloy auto-distraction locking interbody fusion cage and application method thereof
  • Memory alloy auto-distraction locking interbody fusion cage and application method thereof
  • Memory alloy auto-distraction locking interbody fusion cage and application method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0033] Embodiment 1: The self-expanding and locking intervertebral fusion device of the present invention for cervical vertebra distraction and fixation for cervical fusion

[0034] refer to diagram 2-1 to Figure 2-5 , the memory alloy self-expanding and locking type intervertebral fusion device for cervical intervertebral fusion consists of a rectangular main body 11 , self-expanding holes 12 , locking teeth 13 , holding holes 14 , and bone grafting holes 15 . The self-expanding hole 12 is circular and / or elliptical and symmetrical on both sides of the rectangular and / or cashew-shaped body 11; the locking teeth 13 are located on the upper and lower sides of the self-expanding hole and are symmetrical. Facing outward; the holding hole 14 is located at the rear of the rectangular and / or cashew nut-shaped main body 11; the bone graft hole 15 is located at the center of the rectangular and / or cashew nut-shaped main body 11, and its shape is consistent with the rectangular and / ...

Embodiment 2

[0039] Embodiment 2: Laminoarticular process pressure fixation hook of the present invention for transverse process fixation

[0040] Referring to FIG. 4 , the difference between this embodiment and Embodiment 1 is that in this embodiment, the self-expanding locking type intervertebral fusion device 4 of the present invention is in the shape of a cashew nut and fixes the subject's lumbar spine. The memory alloy self-expanding locking type intervertebral fusion device for lumbar intervertebral fusion consists of a cashew nut-shaped main body 41 , self-expanding holes 42 , locking teeth 43 , holding holes 44 , and bone grafting holes 45 . The self-expanding hole 42 is elliptical and symmetrical on both sides of the cashew nut-shaped body 41; the locking teeth 43 are located on the upper and lower sides of the self-expanding hole and are symmetrical, with the tooth tips facing outward; the holding hole 44 is located on the rectangular and / or Or the rear side of the cashew nut-sha...

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Abstract

The invention provides a memory alloy auto-distraction locking interbody fusion cage which consists of a main body, auto-distraction holes, locking teeth, holding holes and a bone grafting hole, wherein the auto-distraction holes are symmetrically formed in two sides of the main body; the locking teeth are symmetrically formed in the upper sides and the lower sides of the auto-distraction holes, and the tooth tips of the locking teeth face outwards; the holding holes are located at the rear part of the main body; the bone grafting hole of which the shape is consistent with that of the main body is formed in the center of the main body and takes the inner edge of the main body as the boundary; and the auto-distraction locking interbody fusion cage is made from medical memory alloy. When the memory alloy auto-distraction locking interbody fusion cage is used, the locking teeth are pressurized at low temperature, and after the bone grafting hole is filled with a bone grafting material, a holder is adopted to clamp the holding holes to enable the memory alloy auto-distraction locking interbody fusion cage to enter through an operative route to be placed in an objective intervertebral space; after rewarming, the auto-distraction holes restore to the shape before pressurizing, and the tooth tips of the locking teeth are inserted into upper and lower vertebral endplates of the intervertebral space to complete distraction, pressurization and locking stabilization, so that the purpose of distracting and fixing vertebral bodies of the adjacent segments of the intervertebral space is achieved, and the operation is simple.

Description

[0001] Technical Field: The present invention relates to the technical field of medical devices, and more particularly to devices and methods of use for stabilizing vertebral members of the spine. Background technique: [0002] Degenerative diseases of the spine and its structural damage are an important cause of neck, shoulder, waist, and leg pain, sensory and motor function impairment or even loss. In the 1950s, Cloward first proposed Posterior Lumbar Fusion (PLIF), which has developed into one of the basic procedures of spinal surgery today. In 1986, Badgy and Kuslich designed an intervertebral fusion device (Cage) suitable for the human body, namely the BAK (Bagby and Kuslich) system. Since then, intervertebral bone graft fusion technology has been greatly developed and has become a basic surgical method for the treatment of spinal degenerative diseases and structural injuries. The design principle of the intervertebral cage (Cage) is based on the distraction-compression ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/44A61B17/70
CPCA61B17/70A61F2/44
Inventor 潘滔
Owner 潘滔
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