Temperature activated systems
OwnerDennis N. Petrakisinventor
Life of this patent
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Abstract
A shape memory material activated device of the present invention uses a shape memory material activator to create a path through a shell wall of the device. The path through the shell wall may release a substance contained in the shell or allow a substance to enter the shell. The path may be created by fracturing, puncturing, exploding, imploding, peeling, tearing, stretching, separating, debonding or otherwise opening the shell. The devices according to the present invention may be used as temperature sensors or warning devices, drug delivery devices, and the like.
Claims36
A temperature sensor comprising:
- a shell containing a substance capable of providing a visible indication upon release from the shell;
- and
- a shape memory material activator for creating a path through the shell to release the substance from the shell in response to exposure to a temperature which is above a maximum safe temperature.
A shape memory material activated device for opening a shell containing a substance, the device comprising:
- a shell containing a substance;
- and
- a shape memory material activator configured to create a path through the shell in response to exposure of the shape memory material to a temperature above a predetermined temperature.
A drug delivery system comprising:
- a shell containing a drug;
- and
- a shape memory material activator for creating a path to deliver the drug from the shell to a patient when a predetermined temperature of the shape memory material activator is achieved.
The system of claim 35, wherein each of the plurality of chambers contains a different drug.
Dependencies are inferred from the claim text.