Premixed biological hydraulic cement paste composition and using the same
US8475811B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 21, 2008 |
| Grant date | Jul 2, 2013 |
| Priority date | — |
| Expiry date | Aug 23, 2031 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61L2300/602
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A premixed cement paste for use in medical or dental applications. The premixed cement paste remains fluid when stored in a hermetically sealed condition, but hydrates and hardens to set when placed in a physiological environment. The cement paste includes at least one calcium silicate compound and at least one substantially water-free liquid carrier mixed with the at least one calcium silicate compound; the substantially water-free liquid carrier avoids hydration of the mixture during storage, but undergoes exchange with aqueous physiological solutions so that the cement past hydrates and hardens to set when placed in a physiological environment. The paste may be placed in the physiological environment by injection, for example. The at least one calcium silicate compound may be, for example, calcium silicate, dicalcium silicate, tricalcium silicate, or mixtures thereof. The substantially water-free liquid may be, for example, ethylene glycol, polyethylene glycol, liquid glycerol, glycerin, ethyl alcohol, vegetable oil, animal oil, silicon oil, hydroxypropyl methylcellulose, or mixtures thereof. The substantially water-free liquid carrier preferably includes water in an amount less…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.