Medical bone nail for orthopedics department and preparation method thereof

A bone nail and orthopedic technology, applied in the field of medical value-added objects, can solve problems such as potential difference, increased synovial articular cartilage pressure, and reduced patient comfort in life, to reduce contact, solve chronic vertebral pain, and ensure a high degree of matching Effect

Pending Publication Date: 2021-08-06
LONGJAR SHANGHAI IND
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  • Abstract
  • Description
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Problems solved by technology

As a result, the increase in stiffness and the posterior shift of the instantaneous heart during the operation stage will aggravate the increase in the pressure on the adjacent segmental disc and synovial articular cartilage, which will become the main cause of adjacent segmental disc degeneration and synovial joint osteoarthritis. Etiology
[0004] After the tita

Method used

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  • Medical bone nail for orthopedics department and preparation method thereof
  • Medical bone nail for orthopedics department and preparation method thereof

Examples

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Example Embodiment

[0035] Method for preparing the medical orthopedic bone nail of the above examples: the mandrel structure selects a diameter titanium alloy bar in diameter, selects Ti6Al4V (TC4, elastic modulus E = 110 GPa) model titanium alloy bar,

[0036] S1: The mandrel of the above-described embodiment is prepared by the vehicle milling composite machine tool.

[0037] S2: The tuft-shaped short-cut carbon fiber is used as a raw material, and the carbon fiber is a cluster carbon fiber treated by the silicone active agent, wherein the weight ratio of carbon fiber to the polyether ether ketone is 1: 9-3: 7, The two-screw blending process is used to obtain a composite material of carbon fiber reinforced polyether ether ketone;

[0038] S3: In order to enhance the binding strength of the titanium alloy and the PEEK / CF composites, the laser burning or chemical etching process is used, and the nanoscale microporous structure is etched in the middle surface of the bone nail rod;

[0039] S4: The c...

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Abstract

The invention discloses a medical bone nail for orthopedics department and a preparation method thereof. The bone nail comprises a core shaft and carbon fiber reinforced polyether-ether-ketone wrapping the core shaft, the core shaft of the bone nail is made of Ti6Al4V titanium alloy, the core shaft structurally comprises a nut and a screw rod, the screw comprises a rod head part, a rod middle part and a rod tail part, the carbon fiber reinforced polyether-ether-ketone wraps the outer part of the rod middle part, and the diameter of the rod middle part wrapped by the carbon fiber reinforced polyether-ether-ketone is consistent with that of the rod head part; wherein the rod tail part is one end, close to the nut, of the screw rod and is provided with at least four threads, and the rod head part is the other end of the screw rod. The medical bone nail has excellent biological tissue compatibility, not only solves a problem of degeneration of adjacent bones and joints caused by stress shielding after surgery, but also solves problems of chronic vertebral pain caused by bioelectric potential difference and degenerative diseases of adjacent bone segments caused by stress shielding after surgery adopting a traditional orthopedic titanium alloy bone nail.

Description

technical field [0001] The invention belongs to the technical field of medical value inserts, in particular to a medical orthopedic bone nail and a preparation method thereof. Background technique [0002] Lumbar degeneration is a physiological process that develops continuously with age. Studies have shown that individuals over the age of 20 have a tendency to degenerate their intervertebral discs, and even some individuals have obvious degeneration when they reach the age of 30, and cracks appear in the fibrous annulus. The intervertebral discs of individuals over the age of 30 all have degeneration. With age, excessive activities and overloaded loads accelerate the appearance of aging intervertebral discs in the lumbar spine. Lumbar fusion surgery is an important method for the treatment of middle and advanced lumbar degenerative diseases. It is widely used clinically because it can completely relieve nerve compression, rebuild spinal stability, and quickly relieve patie...

Claims

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Application Information

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IPC IPC(8): A61L31/02A61L31/06A61L31/14A61L31/18A61B17/86A61B17/70
CPCA61L31/022A61L31/06A61L31/024A61L31/14A61L31/18A61B17/866A61B17/70A61B2017/00526C08L61/16Y02P10/25
Inventor 赵斌刘洋李敬池袁文徐辰蔡青松
Owner LONGJAR SHANGHAI IND
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