US 11,833,257 B2
Porous structure and method for manufacturing same
Tae Hee Kim, Suwon-si (KR); Jung Nam Im, Suwon-si (KR); Song Jun Doh, Suwon-si (KR); Chaehwa Kim, Seoul (KR); Yoonjin Kim, Yongin-si (KR); and Gyu Dong Lee, Ansan-si (KR)
Assigned to KOREA INSTITUTE OF INDUSTRIAL TECHNOLOGY, Cheonan-si (KR)
Appl. No. 15/735,818
Filed by KOREA INSTITUTE OF INDUSTRIAL TECHNOLOGY, Cheonan-si (KR)
PCT Filed Jun. 10, 2016, PCT No. PCT/KR2016/006213
§ 371(c)(1), (2) Date Dec. 23, 2019,
PCT Pub. No. WO2016/200218, PCT Pub. Date Dec. 15, 2016.
Claims priority of application No. 10-2015-0083576 (KR), filed on Jun. 12, 2015.
Prior Publication US 2020/0139001 A1, May 7, 2020
Int. Cl. A61L 15/42 (2006.01); A61F 13/00 (2006.01); A61L 15/22 (2006.01); A61L 15/44 (2006.01); B29C 44/00 (2006.01); B29K 105/04 (2006.01)
CPC A61L 15/425 (2013.01) [A61F 13/00012 (2013.01); A61F 13/00042 (2013.01); A61F 13/00063 (2013.01); A61F 13/00987 (2013.01); A61L 15/225 (2013.01); A61L 15/44 (2013.01); B29C 44/00 (2013.01); A61L 2300/102 (2013.01); A61L 2300/418 (2013.01); A61L 2300/602 (2013.01); A61L 2400/04 (2013.01); B29K 2105/04 (2013.01); C08J 2201/00 (2013.01); C08J 2301/00 (2013.01); C08J 2301/02 (2013.01); C08J 2301/08 (2013.01); C08J 2305/00 (2013.01); C08J 2305/08 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A porous structure comprising:
water-soluble chitosan having a surface thereof with —NH3+ positive charge; and
a carboxymethyl cellulose-based compound,
wherein the carboxymethyl cellulose-based compound is bonded with calcium ions, and a weight ratio of the water-soluble chitosan and the carboxymethyl cellulose-based compound is from 50:50 to 25:75,
wherein a degree of deacetylation of the water-soluble chitosan is from 80 to 100%.