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Degradable pure magnesium metal bone fracture plate for limb long bone fracture fixation

A technology of bone plate and pure magnesium, which is applied in the direction of fixator, outer plate, internal bone synthesis, etc., can solve the problems of low hardness of pure magnesium material and cannot prepare bone plate, etc., achieve good holding and fixing effect, induce bone cell differentiation, improve The effect of mechanical strength

Pending Publication Date: 2017-12-22
赵德伟 +5
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The present invention solves the problem that pure magnesium materials cannot be used to prepare bone plates that can be used in clinical practice due to their low hardness

Method used

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  • Degradable pure magnesium metal bone fracture plate for limb long bone fracture fixation
  • Degradable pure magnesium metal bone fracture plate for limb long bone fracture fixation
  • Degradable pure magnesium metal bone fracture plate for limb long bone fracture fixation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Such as Figure 1~3 As shown, a degradable pure magnesium metal osteosynthesis plate for long bone fractures of extremities, including a long bone plate body and a through hole set on the bone plate body, the through hole includes a threaded circular locking hole and a strip-shaped pressure hole, the pressure hole is located in the center of the body, the locking holes are symmetrically distributed on both sides of the pressure hole, and the upper surface of the bone plate body is provided with rib protrusions , the locking hole and the pressurizing hole are located on the inner side of the protrusion of the reinforcing rib, and the two sides of the bone plate body are respectively fixedly connected with side wings protruding outward, and the side wings are provided with screw fixing holes.

[0037] Wherein, the bone plate body on the inner side of the reinforcing rib protrusion is arc-shaped; the side wings are semi-circular arc-shaped plates bent toward the lower surf...

Embodiment 2

[0041] In the degradable pure magnesium metal bone plate of the present invention described in Example 1, the two ends of the bone plate body are arc-shaped, and the radius of the arc is 0.5mm; the size of the side wings is 10mm*10mm , the radius of the arc is 0.2mm, and the chamfering angle of the screw fixing hole in the flank is 10°; the length of the bone plate body is 118mm, the thickness is 2.5mm, and the width is 11mm; the thickness of the rib protrusion is 0.5mm, The diameter of the locking hole is 3.5mm, the length of the strip-shaped pressure hole is 7mm, and the distance between the locking holes (that is, the distance between the centers of adjacent locking holes) is 13mm. The distance from the pressure hole (that is, the distance between the adjacent locking hole and the center of the pressure hole) is 15mm.

Embodiment 3

[0043] In the degradable pure magnesium metal bone plate of the present invention described in Example 1, the two ends of the bone plate body are arc-shaped, the radius of the arc is 0.5 mm, the length of the bone plate body is 260 mm, and the thickness The size of the side wing is 4mm, and the width is 16mm; the size of the side wing is 12mm*12mm, the radius of the arc is 0.3mm, and the chamfer angle of the screw fixing hole in the side wing is 12°; the thickness of the rib protrusion is 1mm, and the height 1mm; the diameter of the locking hole is 5mm, the length of the elongated pressure hole is 10mm, the distance between the locking holes (that is, the distance between the centers of adjacent locking holes) is 15mm, the The distance between the locking hole and the pressure hole (that is, the distance between the center of the adjacent locking hole and the pressure hole) is 17 mm.

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Abstract

The invention discloses a degradable pure magnesium metal bone fracture plate for limb long bone fracture fixation, comprising a long strip shaped bone fracture plate body and through holes disposed in the bone fracture plate body. The through holes comprise threaded round locking holes and long strip shaped compressive holes. The compressive holes are positioned at the center of the body. The locking holes are symmetrically distributed at two sides of the compressive holes. An upper surface of the bone fracture plate body is provided with a reinforcing rib projection. The locking holes and the compressive holes are positioned at an inner side of the reinforcing rib projection. Two sides of the bone fracture plate body are fixedly connected with outwardly projecting side arms respectively, and each side arm is provided with screw fixing holes. The upper surface of the bone fracture plate body is provided with a loop of reinforcing rib projection, biomechanical property of degradable magnesium metal is enhanced, and the bone fracture plate body can be prevented from being fractured. The two sides of the bone fracture plate body are provided with the surrounding type side arms and the fixing screw holes, the bone fracture plate can be well attached to a bone surface, the compressive effect is achieved, and the fracture position can be well controlled and fixed.

Description

technical field [0001] The invention relates to a medical internal fixation device, in particular to a degradable pure magnesium bone plate used for fixation of long bone shaft fractures of limbs. Background technique [0002] For fractures of the long bones of the extremities, open reduction and internal fixation are often used clinically. The internal fixation devices used are mainly locking compression plates, interlocking intramedullary nails, and memory alloy embracing bone plates. The metal materials used in these implants mainly include Medical stainless steel and titanium alloy series. Titanium alloy has the characteristics of small specific gravity, high strength, low elastic modulus, and easy processing and forming. It has now developed into an ideal functional structural material for surgical implants. However, the complex internal environment of the human body will cause corrosion of metal materials and release of toxic elements, thus reducing biocompatibility; ...

Claims

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Application Information

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IPC IPC(8): A61B17/80
CPCA61B17/8014A61B17/8057A61B17/8061A61B2017/00831A61B2017/564
Inventor 赵德伟王本杰谢辉刘保一马志杰王威
Owner 赵德伟
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