Unlock instant, AI-driven research and patent intelligence for your innovation.

Implant

A technology of implants and needles, applied in the field of implants, can solve the problems of not being uniformly decomposed, screws not having sufficient mechanical strength, separation of hydroxyapatite and artificial joints, etc., to improve the initial bonding force and interface force Effect

Inactive Publication Date: 2012-08-15
U & I INC
View PDF6 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is still the problem of separation of hydroxyapatite from artificial joints
[0005] Meanwhile, screws made only of biodegradable polymers have been used as fixation implants to improve bone healing of artificial joints, but such screws have problems of not having sufficient mechanical strength and not being uniformly disassembled

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Implant
  • Implant
  • Implant

Examples

Experimental program
Comparison scheme
Effect test

preparation example

[0089] Components having the component ratios given in Table 1 below were charged into a crucible made of stainless steel (SUS 410) and having an inner diameter of 50 mm. Then, while argon gas flows around the crucible so that the iron, nickel, manganese, aluminum, magnesium charged in the crucible does not come into contact with the air, the crucible is heated to a temperature of 700°C-750°C using a resistance heating furnace to melt the iron , Nickel, Aluminum, Manganese, Magnesium. The molten iron, nickel, aluminum, manganese, and magnesium are stirred by shaking the crucible so that they are easily mixed with each other. The completely molten magnesium alloy is cooled to produce solid magnesium alloy. In this case, in order to improve the mechanical strength of the solid magnesium alloy, the molten magnesium alloy was rapidly cooled by immersing the crucible in water (20° C.).

[0090] [Table 1]

[0091]

example 1

[0093] The biodegradable magnesium alloy of Preparation Example 1 was ground to obtain a powder having an average particle diameter of 500 μmu (hereinafter referred to as "biodegradable magnesium alloy powder").

[0094] Biodegradable magnesium alloy powder was mixed with a biodegradable polymer (LPLG (poly(L-lactide-co-glycolide))) in a volume ratio of 85:15. Thereafter, the mixture was pressed at a temperature of 200° C. and a pressure of 5 atmospheres to produce screw-shaped implants.

[0095] figure 2 is a photograph of an artificial joint fitted with an implant manufactured in Example 1.

[0096] refer to figure 2 , which accurately depicts the implant (arrow) installed in an artificial joint (trade name: Optigen, manufactured by Yon & I Corporation).

preparation example 1

[0098] The biodegradable magnesium alloy of Preparation Example 1 was extruded at an extrusion temperature of 400° C., and the compression ratio (extrusion ratio) of the cross-sectional area of ​​the biodegradable magnesium alloy before and after extrusion was fixed at 15:1. The extruded magnesium alloy was processed to the extent that it could be transplanted into mice to create the implants.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
porosityaaaaaaaaaa
Login to View More

Abstract

The present invention relates to an implant which fixes an artificial joint to the bone of a patient, and which comprises biodegradable magnesium alloys.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of Korean Patent Application No. KR10-2009-0120346 filed on December 7, 2009, which is hereby incorporated by reference in its entirety. technical field [0003] The present invention relates to an implant. Background technique [0004] Artificial joints (such as hip implants, knee implants, etc.) work by allowing bone tissue to grow when they are implanted into bone. In this case, bone tissue grows to hold the artificial joint in place in the bone. In conventional artificial joints, bone cement or hydroxyapatite (HA) is coated on the artificial joint to improve the interfacial force between the bone tissue and the artificial joint. Wherein in the case of bone cement, the bone cement is kneaded and then adhered to the artificial joint at the time of surgery. However, bone cement can break down after surgery, and the eluted substances and particles in the bone cement can have harmf...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): A61L27/04A61L27/50A61L27/06
CPCA61L27/047A61L27/58A61L31/022A61L31/148A61F2/46A61F2002/30064A61F2002/4631A61L27/56A61F2/30749
Inventor 具滋教石铉光梁硕祚金有灿赵晟伦金钟泽
Owner U & I INC