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

a porous material

A technology of porous materials and raw materials, applied in prosthetics, tissue regeneration, medical science, etc., can solve problems such as unsatisfactory bone growth ability, poor tissue fluid flow, and affecting bone tissue regeneration, so as to achieve process and parameters that are easy to control, Strong capillary action, bone regeneration promoting effect

Active Publication Date: 2020-07-03
CHONGQING RUNZE PHARM CO LTD
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Although people have done a lot of research on porous medical implant materials, their bone growth ability is still not ideal. The structure of the current porous material implants is a single pore structure, and there is poor flow of interstitial fluid, and it is difficult for cells to reach the implant. Deep in the body, uneven internal cells, etc., may even cause some cell death, incomplete bone growth, and affect bone tissue regeneration

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
  • a porous material
  • a porous material
  • a porous material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] The porous material in this embodiment is porous hydroxyapatite, including a material body, the material body includes holes and a cavity wall surrounding the holes, the holes are through, the pore diameter is 310 μm, and there are through holes inside the cavity wall. Channels, all channels are connected in the whole material body, there is a hole on the wall of the cavity that is smaller than the hole diameter of the hole surrounded by the wall of the cavity, the diameter of the smaller hole is 10 μm, and the hole of this type is smaller The hole not only communicates with other holes on the cavity wall, but also communicates with the hole surrounded by the cavity wall and the passage in the cavity wall. The equivalent diameter of the channel penetrating through the cavity wall is 30 μm, and the equivalent diameter of the channel refers to the diameter converted from the cross-sectional area of ​​the channel according to the area of ​​a circle. The preparation method ...

Embodiment 2

[0040] The porous material of this embodiment is porous titanium, including a material body, the material body includes a hole and a cavity wall surrounding the hole, the hole is through, the pore diameter is 430 μm, there are through channels inside the cavity wall, and all channels are in The entire material body is connected, and there is a hole on the cavity wall that is smaller than the hole surrounded by the cavity wall. The pore diameter is 38 μm. , and also communicate with the hole surrounded by the cavity wall and the passage in the cavity wall. The equivalent diameter of the channel penetrating through the cavity wall is 60 μm, and the preparation method of the porous titanium is as follows:

[0041] (1) Take 0.6g of polyvinyl alcohol, add 40ml of distilled water, heat to 140°C, completely dissolve the polyvinyl alcohol to obtain a mixed solution of polyvinyl alcohol and distilled water; powder titanium with a particle size of 40nm and a purity of 99.9% 28g of powd...

Embodiment 3

[0049] The porous metal in this embodiment is porous tantalum, which includes a material body. The material body includes holes and a cavity wall surrounding the holes. The holes are through, and the pore diameter is 550 μm. There are through channels inside the cavity wall. All channels It is connected in the whole material body, there are two stages of holes on the cavity wall which are smaller in diameter than the holes surrounded by the cavity wall, the holes of the same level are connected to each other, and the holes of each level are also connected to each other, wherein The diameter of the first-stage hole with a large diameter is 20 μm, and the smaller holes of the two stages are also connected with the hole surrounded by the cavity wall and the channel in the cavity wall, and the holes of each level are also connected with all the holes surrounded by the cavity wall The hole and the through channel in the cavity wall are connected. On the cavity wall with a pore diam...

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
pore sizeaaaaaaaaaa
pore sizeaaaaaaaaaa
compressive strengthaaaaaaaaaa
Login to View More

Abstract

The invention relates to a porous material, wherein the material body comprises a hole and a cavity wall for enclosing to form the hole, the hole is penetrating, penetrating channels are arranged in the cavity wall and are communicated to each other in the material body, at least one kind of small holes with the hole size of less than the hole size of the hole enclosed by the cavity wall are arranged on the cavity wall, have the hole size of less than 40 [mu]m, are communicated to other holes on the cavity wall, and are communicated to the hole enclosed by the cavity wall and the channels in the cavity wall, and the equivalent diameter of the channel is 30-90 [mu]m. The preparation method comprises: carrying out cross mixing weaving by using two polymer wires to form a net while filling with a slurry, wherein the slurry is prepared by mixing porous material powder and a pore-forming agent; and drying, and sintering to prepare the porous material. According to the present invention, with the porous material, tissue fluids and cells can conveniently, smoothly and rapidly reach the deep position of the porous metal and each part of the cavity wall from the surface of the porous metal;and the porous material has good tissue regeneration effect, the preparation method can easily ensure the hole structure, and the process and the parameters are easy to control.

Description

technical field [0001] The present invention relates to porous materials, in particular to a porous material for medical implantation. Background technique [0002] With the rapid increase of the social population, the emergence of a large number of means of transportation, the accelerated pace of life, the frequent occurrence of diseases, natural disasters, traffic accidents, sports trauma and work-related injuries, and local wars, etc., have caused a sharp increase in people's accidental injuries. Biomedical implant materials demand has increased substantially. The elastic modulus of solid materials (such as metals, ceramics, etc.) is much higher than that of natural bone. After implantation in the body, it is easy to produce a stress shielding effect, which makes the implant loose and fall off, affecting the stability of the implant. Studies have shown that the structural properties of the material can significantly affect the speed of new bone growth. The design of the ...

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): A61L27/56A61L27/54A61L27/22A61L27/12A61L27/06A61L27/04
CPCA61L27/047A61L27/06A61L27/12A61L27/227A61L27/54A61L27/56A61L2300/252A61L2300/414A61L2430/02C08L89/00
Inventor 叶雷
Owner CHONGQING RUNZE PHARM CO LTD