Patent ID: 11878089
Assignee: NORTH CAROLINA STATE UNIVERSITY
Field: Medical technology (Instruments)
Classification: CPC A  B | IPC A  B

Claim 0:
1. A bio-ink composition comprising:
(a) a bio-compatible micro- or nanogel, wherein the bio-compatible micro- or nanogel comprises a poly(N-isopropylacrylamide) (poly-NIPam) polymer, wherein said poly-NIPam polymer is a copolymer of N-isopropylacrylamide, acrylic acid, and a crosslinking agent;
(b) a liquid carrier;
(c) about 10 volume (vol) % to about 30 vol % of a viscosity control agent, wherein the viscosity control agent is a poly(ethylene glycol) (PEG); and
(d) 0 vol % to 50 vol % of a surface tension control agent;
wherein the bio-ink composition comprises about 0.2 mg/ml to about 2 mg/ml of the micro- or nanogel.