Biodegradable particle and production method thereof

C - Chemistry – Metallurgy – 08 – J

Patent

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Details

C08J 3/12 (2006.01) A61K 9/14 (2006.01) A61L 31/00 (2006.01) A61P 7/04 (2006.01)

Patent

CA 2626881

It is intended to provide a biodegradable particle which can be formed without causing aggregation or cohesion of particles, and can be delivered or injected without causing clogging due to aggregation thereof in a blood vessel or a tube with a small diameter whose inner diameter is smaller than the particle size, which is provided for an apparatus such as a catheter, a needle or an injection mainly for pharmaceutical and medical use and in which a material thereof is easily degraded after a certain period of time and a degraded component can be absorbed in the end or can be discharged to the outside of the body. As a means for resolution, the biodegradable particle characterized in that the compressive elasticity modulus of the particle in a water- saturated state is 10 MPa or less is provided.

La présente invention a pour but de fournir une particule biodégradable qui peut être formée sans causer d~agglomération ni de cohésion de particules et peut être livrée ou injectée sans causer de colmatage dû à leur agglomération dans un vaisseau sanguin ou un tube de diamètre étroit dont le diamètre intérieur est plus étroit que la taille des particules ; il est fourni pour un appareil tel qu~un cathéter, une seringue ou une injection à utilisation pharmaceutique et médicale dans laquelle une matière se dégrade facilement au bout d'une certaine période de temps et un composant dégradé peut être absorbé à la fin ou rejeté vers l'extérieur du corps. Cette particule biodégradable est fournie comme moyen de résolution caractérisée par le fait que le modulus d~élasticité de compression de la particule à l~état saturé par l~eau est de 10 MPa ou moins.

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