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231 results about "Control substances" patented technology

Apparatus and methods for controlled substance delivery from implanted prostheses

The present invention provides improved devices and methods for inhibiting restenosis and hyperplasia after intravascular intervention. In particular, the present invention provides luminal prostheses which allow for programmed and controlled substance delivery with increased efficacy to selected locations within a patient's vasculature to inhibit restenosis. The luminal delivery prosthesis comprises a scaffold which is implantable within a body lumen and means on the scaffold for releasing a substance from the scaffold. The substance is released over a predetermined time pattern comprising an initial phase wherein the substance delivery rate is below a threshold level and a subsequent phase wherein the substance delivery rate is above a threshold level.
Owner:ALTAI MEDICAL TECH

Portable light generation and detection system

A field deployable optical assembly for use in testing a light-responsive sample is disclosed. The assembly includes a microfluidic device, a first optical package, and a second optical package. The first optical package includes a light emitting diode (LED), a first optical device, and a first light-path control, the first optical package configured to guide and focus light from the LED onto the sample. The microfluidic device includes a tethered control substance. In response to a substance within the sample being associated with, and attaching to, the tethered control, the sample emits light. The second optical package includes a photo sensor, a second optical device, and a second light-path control, the second optical package configured to guide and focus the light emitted from the sample onto the photo sensor.
Owner:BL TECH INC

Methods and apparatus for molecular species detection, inspection and classification using ultraviolet to near infrared Enhanced Photoemission Spectroscopy

The invention relates generally to the field of substance and material detection, inspection, and classification at wavelengths between approximately 200 nm and approximately 1800 nm. In particular, a handheld Enhanced Photoemission Spectroscopy (“EPS”) detection system with a high degree of specificity and accuracy, capable of use at small and substantial standoff distances (e.g., greater than 12 inches) is utilized to identify specific substances (e.g., controlled substances, illegal drugs and explosives, and other substances of which trace detection would be of benefit) and mixtures thereof in order to provide information to officials for identification purposes and assists in determinations related to the legality, hazardous nature and / or disposition decision of such substance(s).
Owner:CDEX
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