Compliant yet tough hydrogel systems as ultrasound transmission agents
US9878506B2 · kind B2 · utility
8Cited by
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4Claims
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Key dates
| Filing date | Dec 16, 2015 |
| Grant date | Jan 30, 2018 |
| Priority date | — |
| Expiry date | Dec 16, 2035 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2333/26
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Method for making a tough and compliant hydrogel. A precursor hydrogel is made of a first polymer selected to maintain high elasticity and a second polymer selected to dissipate mechanical energy. The precursor hydrogel is stretched to a multiple of its original length to form a pre-stretched hydrogel. The pre-stretched hydrogel is allowed to relax and is soaked in a biocompatible solvent to reach equilibrium swelling of the pre-stretched hydrogel whereby shear modulus of the hydrogel is reduced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.