Porous body and material for medical use
AssigneesNational University Corporation Tokyo University of Agriculture and Technology, Nippon Medical School Foundation
InventorsYasumoto Nakazawa, Chiemi Sakata, Shuhei Tara, Eri Koyanagi
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Abstract
There is provided a porous body which has a first surface and a second surface opposite to each other, and which comprises a first polymer material and a second polymer material, in which a Young's modulus of the first polymer material is lower than a Young's modulus of the second polymer material, an in vivo disappearance rate of the first polymer material is higher than an in vivo disappearance rate of the second polymer material, and a composition in a first region of the porous body and a composition in a second region of the porous body are different from each other.
Claims16
A porous body which has a first surface and a second surface, and which comprises a first polymer material and a second polymer material, wherein
- a Young's modulus of the first polymer material is lower than a Young's modulus of the second polymer material,
- absorbability of the first polymer material with respect to phosphate buffered saline is greater than absorbability of the second polymer material with respect to phosphate buffered saline,
- a composition of the porous body in a first region and a composition of the porous body in a second region are different from each other,
- a distance between the first region and the first surface is shorter than a distance between the second region and the first surface, and
- the second polymer material comprises at least one selected from a group consisting of (i) chitin, sericin, fibroin, carboxymethyl cellulose, and chitosan, and (ii) salts and derivatives of these.
Dependencies are inferred from the claim text.