Patents
Literature
Eureka-AI is an intelligent assistant for R&D personnel, combined with Patent DNA, to facilitate innovative research.
Eureka AI

3151results about How to "Operational security" patented technology

Method for separating and extracting stem cells from placenta, umbilical cord or adipose tissue

The invention relates to a method for separating and extracting stem cells from a placenta, umbilical cord or adipose tissue, which comprises the following process steps: firstly mixing the placenta, umbilical cord or adipose tissue and a cell maintenance fluid according to the proportion by weight of 2.5-4:1, putting the mixture into a tissue crushing barrel, adding collagenase after crushing, uniformly mixing, hatching at the temperature of 37 DEG C, filtering, adding a precipitator, sucking a supernatant fluid after settling, centrifuging, removing the supernatant fluid, adding concentrated cells into a liquid of diatrizoate sodium-ficoll 400#, then centrifuging, collecting 10-15 ml of intermediate cell layer, washing with the cell maintenance fluid, counting the collected cells, and providing the cells for clinical use when the cell survival ratio is more than or equal to 95 percent. The invention not only realizes the separation and the extraction of all stem cells from the placenta, umbilical cord or adipose tissue, but also realizes industrialized production, and enables doctors to conveniently, safely and canonically obtain the adult stem cells in clinic and use the adult stem cells for treating the diseases of patients as using medicaments, thereby solving the bottleneck problem of difficult obtainment of adult stem cells in clinic and popularizing a cell treatment technology.
Owner:NINGXIA ZHONGLIANDA BIOPHYSICS

Joint test specimen method using 3D (three-dimensional) printing for making structure surface containing specific geometrical characteristics

ActiveCN104807685AThe sample preparation process is simple and fastOperational securityPreparing sample for investigationEngineeringModel test
The invention provides a joint test specimen method using 3D (three-dimensional) printing for making a structure surface containing specific geometrical characteristics, and belongs to a specimen making method of model test specimens similar to joint rock bodies. According to the method, the structure surface is independently designed according to study requirements, or the actual rock body structure surface appearance is obtained through a surface outline scanning technology; the designed structure surface penetrates through a complete cylinder model in 3D graphics software, two parts of complementary test block models obtained through separation are obtained through Boolean operation, and a 3D printer is used for respectively printing and forming the two parts of test block models; printing molds are respectively put into two specimen making boxes and are assembled, similar materials are cast into the specimen making boxes, and the mold dismounting maintenance is carried out after the materials are solidified and formed; the two parts of test blocks are correctly combined to obtain the standard test specimens containing the designed structure surface. The method has the advantages that (1) the operation of the method is safe, simple and convenient; (2) the complicated and variable structure surface is embedded in the standard test specimens, the actual rock body structural surface can be reproduced through being matched with the surface outline scanning technology, and the reasonable test result is obtained.
Owner:CHINA UNIV OF MINING & TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products