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

Preparation method and application of a medical degradable zinc-based composite plate

A composite sheet, zinc-based technology, applied in medical science, prosthesis and other directions, can solve the problems of too fast degradation of magnesium alloy sheet and slow degradation rate of zinc alloy sheet, and achieve moderate and controllable degradation rate, high strength and good toughness. Effect

Active Publication Date: 2021-11-09
湖南华翔医疗科技有限公司
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The invention provides a preparation method and application of a medical degradable zinc-based composite sheet, the purpose of which is to solve the problems of too slow degradation rate of the zinc alloy sheet and too fast degradation of the magnesium alloy sheet, and maintain sufficient strength

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
  • Preparation method and application of a medical degradable zinc-based composite plate
  • Preparation method and application of a medical degradable zinc-based composite plate
  • Preparation method and application of a medical degradable zinc-based composite plate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] The embodiment provides a method for preparing a medical degradable zinc-based composite sheet, comprising the following steps:

[0038] Step 1, inner layer melting and casting: smelting MgZn alloy, then pouring into such as figure 1 In the mold shown, a magnesium alloy ingot is obtained after cooling, wherein the mass percentage of Mg is 98%, and the mass percentage of Zn is 2%; the diameter of the magnesium alloy ingot is 50 mm, and the height is 100 mm ;

[0039] Step 2: Inner layer homogenization treatment stage: homogenize the magnesium alloy ingot, the homogenization temperature is 500°C, and the time is 480 min;

[0040] Step 3, the first machining stage of the inner layer: the magnesium alloy ingot that has undergone step 2 is subjected to the first machining. After processing, the diameter of the ingot is 48 mm, the height is 95 mm, the surface is clean, smooth, and there is no shrinkage cavity;

[0041] Step 4, the inner layer forging stage: free forging the...

Embodiment 2

[0052] The preparation steps are the same as in Example 1, except that the composition of the inner layer magnesium plate is Mg and Zn, the mass percentage of Mg is 98%, and the mass percentage of Zn is 2%; the composition of the outer layer zinc alloy Zn, Mg and Fe, the mass percentage of Zn is 99.85%, the mass percentage of Mg is 0.05%, and the mass percentage of Fe is 0.1%.

Embodiment 3

[0054] The preparation steps are the same as in Example 1, except that the composition of the inner layer magnesium plate is Mg and Ca, the mass percentage of Mg is 98%, and the mass percentage of Ca is 2%; the composition of the outer layer zinc alloy Zn, Mg and Fe, the mass percentage of Zn is 99.8%, the mass percentage of Mg is 0.1%, and the mass percentage of Fe is 0.1%.

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
diameteraaaaaaaaaa
heightaaaaaaaaaa
diameteraaaaaaaaaa
Login to View More

Abstract

The invention provides a method for preparing a medical degradable zinc-based composite plate. Through a solid-liquid contact method, a magnesium alloy is used as a solid phase to make a magnesium plate and fix it in the center of a mold, and then the zinc alloy melt is poured into the mold. The solid phase has a higher melting point, and the liquid phase of the zinc alloy can crystallize by attaching to the solid-liquid contact surface and fill the cavity to form the desired shape. The outer layer of the zinc-based composite sheet includes Zn, Mg and X elements, and the X element is at least one of Cu, Fe, Ca, and Sr; wherein the mass percentage of the Zn element is 60-99.995%, and the Mg element The mass percentage is 0.0001-35%, and the balance is X. The inner layer material includes Mg and Y elements, and the Y element is at least one of Ca, Zn, and Sr; wherein the mass percentage of Mg element is 98-91.995%: the cost of materials added to the zinc-based composite sheet of the present invention It is cheap, and the degradation products of the prepared alloy materials are metabolized and degraded. The corrosion resistance is between the magnesium alloy and the zinc alloy, and the strength is high and the toughness is good.

Description

technical field [0001] The invention relates to the field of medical implant materials, in particular to a preparation method and application of a medical degradable zinc-based composite plate. Background technique [0002] Zinc ions are an essential nutrient element for the human body and participate in many metabolic activities of the human body. The American Clinical Innovation Institute recommends that the human body must consume 2.5 to 6.4 mg of zinc per day. Adults may have certain toxicity if they consume about 300 mg of zinc per day. reaction. A zinc-based biodegradable bone nail releases about 0.2-0.3 mg of zinc per day. Even if all these zinc ions are released into blood vessels, it is far below the necessary intake of the human body. That is to say, zinc-based biodegradable orthopedic implants The zinc ions released by the degradation of medical devices will not cause systemic toxicity. The study also found that the transport of zinc ions in human tissues is ver...

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 Patents(China)
IPC IPC(8): B22D19/16C22C18/00C22C23/06A61L27/04
CPCA61L27/047B22D19/16C22C18/00C22C23/06
Inventor 宁靠李贻成宋坤刘江
Owner 湖南华翔医疗科技有限公司