Boron trioxide glass-based fibers and particles in dressings, sutures, surgical glue, and other wound care compositions
US8173154B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 6, 2010 |
| Grant date | May 8, 2012 |
| Priority date | — |
| Expiry date | Feb 11, 2030 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61L2400/12
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A method and compositions for wound care management comprising a dressing comprising a three-dimensional body of glass-based fibers comprising 40 to 80 weight % B2O3, wherein at least 25 wt. % of the fibers have a diameter between 200 nm and 4000 nm, and a length:width aspect ratio of at least 10. The glasses may also be used for wound care as fibers formed into sutures, as particles in surgical glue to close a wound, or as particles in an ointment or cream to apply to a wound. The compositions may comprise glass formers P2O5 and/or SiO2; alkali oxides selected from Li2O, Na2O, K2O, and Rb2O; and/or alkaline earth oxides selected from MgO, SrO, BaO and CaO. The compositions may further comprise 0.05 to 10 wt. % of one or more trace elements selected from Ag, Cu, F, Fe, Mn, Mo, Ni, Sr, and Zn.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.