Material for the prevention of bedsores
US8716383B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 9, 2011 |
| Grant date | May 6, 2014 |
| Priority date | — |
| Expiry date | Aug 9, 2031 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F13/069
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A method for manufacturing a protective layer for protecting skin and tissues in a vicinity of the skin includes the steps of: forming a mixture comprising approximately 15% of dimethyl-vinyl-terminated polydimethylsiloxane with a viscosity greater than 20,000 mPa·s, approximately 25% of dimethyl-vinyl-terminated polydimethylsiloxane with a viscosity between 200 and 20,000 mPa·s, approximately 45% of trimethyl-terminated polydimethylsiloxane, approximately 12% of trimethylsiloxy-treated pyrogenic silica, and approximately 3% of dimethyl-hydrogen-terminated co-polydimethylsiloxane-polymethyl-hydrogen-siloxane; polymerizing at least partially the mixture to obtain a polymer gel; and forming the protective layer using the polymer gel. The polymer gel has, at a temperature of 35° C. and when a shearing rate varies between 0 and 100 rad/s, a shear storage modulus or elastic component varying from 11,000 to 20,000 Pa, a shear loss modulus or viscous component varying from 700 to 8,000 Pa, and a Tan Delta varying from 0.06 to 0.38.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.