Spinal support

A spine and magnesium alloy technology, applied in the field of spine stents, can solve problems such as reducing biocompatibility, allergic reaction, dislocation, etc., and achieve the effect of preventing re-collapse, facilitating expansion and maintaining height

Pending Publication Date: 2019-06-04
THE FIRST AFFILIATED HOSPITAL OF GUANGZHOU UNIV OF CHINESE MEDICINE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, metal implant materials for expandable stents in the vertebral body include titanium alloys, nickel, and cobalt-chromium alloys. These metals have good corrosion resistance and can maintain long-term structural stability in the body. Abrasion produces toxic metal ions that may cause allergic reactions or inflammation, reducing biocompatibility
Moreover, the above-mentioned materials are non-degradable materials, and complications such as fracture and dislocation may occur in the long-term

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] see figure 1 and figure 2 . figure 1 It is a structural schematic diagram of the preferred structural contraction state of the spinal column bracket of the present invention. figure 2 It is a structural schematic diagram of the preferred structural expansion state of the spinal column bracket of the present invention. The spinal bracket of the present invention includes a catheter 1 , an air bag and a magnesium alloy telescoping body 2 .

[0043] The airbag is arranged on the catheter 1, and the airbag communicates with the catheter 1; the magnesium alloy telescopic body 2 has a front end 21 and a rear end 22, and the front end 21 and the rear end 22 are separated by The telescoping part covers the airbag; in the expanded state, the cross-sectional area of ​​the front end 21 is larger than the cross-sectional area of ​​the rear end 22 .

[0044] Specifically, the front end of the catheter 1 is provided with a position-limiting protrusion 11 for position-limiting. ...

Embodiment 2

[0062] The structure of the spinal bracket of this embodiment is substantially the same as that of the first embodiment, except that in the contracted state, the length of the magnesium alloy telescopic body 2 along the axial direction of the catheter 1 is 27 mm.

[0063] In the maximum expanded state, the maximum height of the magnesium alloy telescopic body 2 along the radial direction of the catheter 1 is 17mm, and its maximum volume is 5.0ml. The magnesium alloy telescopic body 2 of this specification is suitable for patients with medium-sized vertebral bodies.

[0064] The optimum maximum height of the magnesium alloy telescopic body 2 in this embodiment along the radial direction of the catheter 1 after expansion is 15 mm.

Embodiment 3

[0066] The structure of the spinal bracket of this embodiment is substantially the same as that of the first embodiment, except that, in the contracted state, the length of the magnesium alloy telescopic body 2 along the axial direction of the catheter 1 is 31 mm.

[0067] In the state of maximum expansion, the maximum height of the magnesium alloy telescopic body 2 along the radial direction of the catheter 1 is 17mm, and its maximum volume is 5.5ml. The magnesium alloy telescopic body 2 of this specification is suitable for patients with larger vertebral bodies.

[0068] The optimum maximum height of the magnesium alloy telescopic body 2 in this embodiment along the radial direction of the catheter 1 after expansion is 16 mm.

[0069] Generally, the specifications of the magnesium alloy telescopic body 2 in Embodiment 1 to Embodiment 3 are the most commonly used.

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PUM

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Abstract

The invention discloses a spinal support. The spinal support comprises a tube, an air bag, and a telescopic magnesium alloy body; the air bag is arranged on the tube, and communicates with the tube; the telescopic magnesium alloy body comprises a front end, a rear end, and a telescopic part arranged between the front end and the rear end; and the air bag is coated with the telescopic part. When the spinal support is in expanded state, the sectional area of the front end is larger than the sectional area of the rear end. Being arranged with the tube, the air bag and the telescopic magnesium alloy body, the spinal support is capable of allowing the air bag and the telescopic magnesium alloy body to enter into the vertebral column under guidance of the tube; a contrast agent is injected through the tube so as to have the air bag expanded, thereby allowing the telescopic magnesium alloy body to horizontally expand and vertically propped so as to restore compressed fractured vertebrae; after the restoration of the vertebrae, the telescopic magnesium alloy body can achieve support effects so as to maintain the vertebrae at the restored state; and the telescopic magnesium alloy body can be retained inside the vertebral column, thereby facilitating injection of bone cement or bone materials so as to effectively maintain height of the vertebrae and correct kyphosis angle. In addition, during degradation process of the telescopic magnesium alloy body, the magnesium alloy has the effect of promoting bone formation.

Description

technical field [0001] The invention relates to the field of medical equipment, in particular to a spinal bracket. Background technique [0002] The incidence of osteoporotic vertebral fractures worldwide is 1.4 million per year, and this number will gradually increase as the world ages. Complications such as chronic low back pain, decreased activity, and obvious spinal deformity greatly reduce the quality of life of these patients, and even cause death due to kyphoscoliosis or long-term bed rest. Minimally invasive percutaneous vertebral body augmentation has been widely used in some patients with osteoporotic or pathological spinal fractures because of its minimally invasive nature, rapid pain relief, and restoration of functional activities. [0003] In 1984, French Galibert et al. reported percutaneous vertebroplasty, which injected bone cement into the vertebral body through a percutaneous cannula to stabilize the fracture and relieve pain. Various improvements have b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/44
Inventor 张顺聪郭丹青梁德袁凯唐永超李永贤莫国业郭惠智罗培杰周腾鹏刘攀杰
Owner THE FIRST AFFILIATED HOSPITAL OF GUANGZHOU UNIV OF CHINESE MEDICINE
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