Abstract:
A biomedical sensor system is disclosed that includes a plurality of electrodes (50) and a contiguous adhesive material (52) that is in contact with each of the plurality of electrodes. The adhesive material has a high impedance and is dielectric yet changes its dielectric properties in the presence of biomedical signals. The adhesive material may include a polymeric material and a polar material that is dispersed within the polymeric material. The system may be adapted for ECG analysis.
Abstract:
The invention provides a thin film transferable composite comprising a carrier film, a first electrically conductive material, and adhesive. The first electrically conductive material is formed as a deposit on the carrier film and is integrally associated with first portions of the composite, and separably associated with second portions of the composite. The adhesive is arranged to coat with the first electrically conductive material for applying the composite to a receiving surface. The carrier film is separable from the second portions of the electrically conductive material with the first portions of the electrically conductive material remaining with the carrier film. The second portions of the electrically conductive material define a transferable electrical component.
Abstract:
A frangible label which includes a plurality of integrally joined layers deposited successively on a removable carrier film. One or more of the layers are electrically conductive and configured to define an electrical circuit. The label is transferrable from the carrier film onto a receiving surface and is otherwise inseparable from the carrier film without attendant disruption of the circuit. In an alternative embodiment, the label includes an adhesive layer for applying the label to a substrate, such that the plurality of integrally joined layers including the electrical circuit are transferrable to the receiving surface and are otherwise inseparable from the carrier film without destruction of the electrical circuit.
Abstract:
An optical device (10) receives incident light (28) having a minimum wavelength, and produces resultant light containing an optical image (32). The device (10) includes a first material (20) having a first index of refraction and a surface (18) embossed with an optical interference pattern (16) and a second material (22) having a second index of refraction deposited onto the embossed surface (18) of the first material (20). The depth of deposition is at least equal to three quarters of the minimum wavelength component of the incident light within the second material.
Abstract:
Sont décrits des adhésifs sensibles à la pression des dispositifs transdermiques. La composition adhésive permet de réguler les vitesses de transmission de fluides ou de vapeur. L'invention permet de réaliser un adhésif perméable aux fluides dans lequel un polymère sensible à la pression est mélangé à un polysiloxane réticulé. La transmission de vapeur ou de fluides à travers l'adhésif varie en fonction des proportions du mélange entre le polysiloxane réticulé et le polymère. L'adhésif est utilisé pour enduire une couche en plastique ou en tissu. La couche adhésive est protégée par une substance de décollement qui est pelée avant l'utilisation .
Abstract:
An alternating electric field responsive biomedical composite is disclosed that provides capacitive coupling through the composite. The biomedical composite includes a binder material, a polar material that is substantially dispersed within the binder material, and electrically conductive particles within the binder material. The polar material is responsive to the presence of an alternating electric field, and the electrically conductive particles are not of sufficient concentration to form a conductive network through the composite unless and until the composite becomes overcharged.
Abstract:
An electrically conductive composite is disclosed that includes a dielectric material having a first side and a second side, conductive particles within the dielectric material layer, and a discontinuous layer of a conductive material on a first side of the dielectric layer. The conductive particles are aligned to form a plurality of conductive paths from the first side to the second side of the dielectric material, and each of the conductive paths is formed of at least a plurality of conductive particles. The discontinuous layer includes a plurality of non-mutually connected portions that cover portions of, but not all of, the first side of the dielectric material such that exposed portions of the underlying first side of the dielectric material remain exposed through the discontinuous layer, yet the discontinuous layer facilitates the electronic coupling together of a plurality of the conductive paths from the first side to the second side of the dielectric material.
Abstract:
A biomedical sensor system is disclosed that includes a high impedance conductive electrode having an electrode impedance of at least about 20 kΩ/sq-mil, and a dielectric material on a first side of the electrode for receiving a discharge of an electrical signal from the dielectric material responsive to the presence of a time varying signal adjacent a second side of the dielectric material that is opposite the first side.
Abstract:
A method of forming an electrically conductive composite is disclosed that includes the steps of providing a first dielectric material and a second conductive material that is substantially dispersed within the first dielectric material; and applying an electric field through at least a portion of the combined first dielectric material and second conductive material such that the second conductive material undergoes electrophoresis and forms at least one electrically conductive path through the electrically conductive composite along the direction of the applied electric field.