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401results about How to "Elasticity" patented technology

Flexible force or pressure sensor array using semiconductor strain gauge, fabrication method thereof and measurement method thereof

The force or pressure sensor array of the present invention effectively has both flexibility and elasticity. Since the substrate itself is a kind of a polymer material, the substrate can be bent or expanded. Although silicon, which is a material of the semiconductor strain gauge, is easily broken and solid, mechanical flexibility can be secured if it is fabricated extremely thin. To this end, particularly, disclosed is a flexible force or pressure sensor array using semiconductor strain gauges 110, the sensor array comprising: a substrate 10 including: the semiconductor strain gauges 110 in which a plurality of elements formed in a certain array pattern is deformed by force or pressure, a pair of polymer film layers 120 and 130 having film surfaces contacted facing each other and containing the semiconductor strain gauge 110 between the film surfaces contacted with each other, and a pair of signal line layers formed on top and bottom surfaces of an insulating layer using either of the pair of polymer film layers 120 and 130 as the insulating layer and connected to the elements 111 of the array pattern to form electrodes, for fetching deformation signals outputted due to deformation of the elements 111 to outside; and a pair of elastomer layers 20 and 30 formed on both sides of the substrate 10 to contain the substrate 10 inside.
Owner:KOREA RES INST OF STANDARDS & SCI

Microsphere type embolic agent and preparation technology thereof

The invention provides a microsphere embolic agent, which is an elastic microsphere formed by the crosslink polymer of the functionalized macromolecules with the biocompatibility, and the particle size of the microsphere ranges from 1 Mum to 1500 Mum. The preparing technology includes the steps as follows: in a covalent link, linking a crosslinkable micromolecules with an acrylic acid structure on the polyvinyl alcohol, polyethylene glycol or polysaccharide macromolecules, forming the functionalized macromolecules; after that, the functionalized macromolecules and the monomer of the 2- acrylamide-2-methyl propanesulfonic acid undertakes opposite suspension polymerization, obtaining the crosslink polymeric microsphere embolic agent. The embolic agent has comparatively large retractility and elasticity, whose particle size is controllable and has perfect dispersiveness; moreover, the raw material is non-toxic and at the same time has good biocompatibility and stability. The preparing technology is a real chemosynthesis technology, whose material and preparing process does not produce any virus pollution, according with various requirements of the international embolic agent, which can replace various import and domestic expensive embolic agent products and is extensively applicable to various surgeries in the interventional radiology field.
Owner:SUZHOU HENGRUI CALLISYN BIOLOGICAL MEDICINE TECH CO LTD

Polyhydroxyl polymer embolized microsphere and preparation process thereof

The invention relates to a polyhydroxyl polymer embolized microsphere, which is formed by cross-linking polymerization of biocompatible functional macromolecules. The embolized microsphere is characterized in that the functional macromolecule comprises a polymer, wherein at least two acetal structures containing acrylic acid or derivative radicals thereof connected on the main chain or at least two crosslinkable micro-molecules which are connected in a covalent bond mode and have acrylic acid or derivative structures thereof; the acetal structures or crosslinkable micro-molecules can form a hydrogel unsaturated functional group through free radical polymerization crosslinking; a functional group by using organic carboxylate as a negative charge carrier is contained inside the microsphere. The invention also provides a preparation process of the polyhydroxyl polymer embolized microsphere. The embolized microsphere has excellent biocompatibility and stability, large elastic stretching rate and recoverability, is uniform and controllable in granularity, excellent in dispersion, simple in use and operation and strong in targeting property, has excellent adsorption capability to bioactive substances, and can be used for various minimally invasive treatment.
Owner:SUZHOU HENGRUI CALLISYN BIOLOGICAL MEDICINE TECH CO LTD
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