Hydrogel based device for detecting an environmental state
US8840839B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 2, 2008 |
| Grant date | Sep 23, 2014 |
| Priority date | — |
| Expiry date | Jul 15, 2031 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/4839
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A transducer device for detecting an environmental state within a biological material including a channel comprising a fluid, a hydrogel material, which is adapted to change its volume when getting into contact with an environmental material and/or when detecting an environmental change, and which is mechanically coupled to the channel such that the volume of the channel changes when the volume of the hydrogel material changes. The transducer device further includes a sensor, which is adapted to generate a signal upon detection of the change of a physical property of the fluid that is induced by the volume change of the channel. By applying the transducer device, an accurate monitoring of physiological parameters, for which the hydrogel material is sensitive is possible. It is also possible to apply the transducer device outside of the bodily lumen, for example to monitor the blood of a patient outside the bodily lumen.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.