Three-dimensional printing of colloidal building blocks for wound healing materials
US11878089B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 5, 2019 |
| Grant date | Jan 23, 2024 |
| Priority date | — |
| Expiry date | Jul 15, 2040 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB33Y80/00
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Bio-ink compositions comprising bio-compatible microgels or nanogels are described. The bio-inks can comprise, for example, micro- or nanogels comprising crosslinked poly(N-isopropylacrylamide) (poly-NIPam). The bio-inks can further comprise viscosity control agents, such as poly(ethylene glycol) (PEG), and/or surface tension agents. Three-dimensional (3D) printing (e.g., piezoelectric printing) of the bio-inks can provide 3D printed materials comprising microgel or nanogel assemblies of the bio-ink compositions. These materials can be used as scaffolds for preparing biological tissues for use, for instance, in regenerative medicine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.