摘要:
Methods are provided for making a reservoir-based sensor device. The method may include fabricating a first substrate portion which comprises an upper surface, an opposed lower surface, a plurality of through holes defining reservoirs between said upper surface and said lower surface, and a plurality of reservoir caps closing off one end of said through holes at said upper surface; fabricating a plurality of sensors on an upper surface of a second substrate portion; aligning the first and second substrate portions such that each of said plurality of sensors is in alignment with each of said plurality of reservoirs; and bonding together the lower surface of said first substrate portion and the upper surface of said second substrate portion to seal each of said sensors inside the reservoir with which it is aligned.
摘要:
Devices are provided for controlled release of chemical molecules, such as drugs or diagnostic agents. The devices comprises a substrate; a plurality of discrete reservoirs located in the substrate, wherein the reservoirs each have at least one opening at a surface of the substrate; chemical molecules, for release, disposed in the reservoirs; a rupturable barrier layer closing the at least one opening; and a pressure generating material disposed in the reservoirs, the pressure generating material being selected from the group consisting of water-swellable materials, osmotic pressure generating materials, and combinations thereof, wherein the chemical molecules can be selectively released from each reservoir by rupturing of the barrier layer, due to pressure generated by the pressure generating material.
摘要:
A microfabricated reaction chamber system for carrying out a nucleic acid sequence amplifiation and detection process on a nucleic acid sample, the process comprising at least first and second process steps using first and second reagents, the device cmprising: an inlet port; a first reaction chamber in communication with the inlet port, for carrying out the first process step; a second reaction chamber in communication with the first reaction chamber, for carrying out the second process step; and an outlet port in communication with the second reaction chamber.
摘要:
The present invention provides electromagnetic energy driven separation methods, including methods for separating molecules in a mixture, for increasing diffusion rate of a substance in a medium, and for moving fluids on a substrate. Such methods work with extremely small volumes of target and may be used for medical diagnosis and treatment.
摘要:
A medical device is provided which may include a reservoir which has an opening and contains a sensor; a reservoir cap closing off the opening to isolate the sensor from an environmental component outside the reservoirs, the reservoir cap being impermeable to the environmental component and adapted to selectively undergo a phase change to disintegrate the reservoir cap and thereby expose the sensor to the environmental component. A method of use may include (i) selectively disintegrating a reservoir cap to expose a sensor which is disposed inside a reservoir of a device implanted in a patient, the disintegrating comprising inducing a phase change in the reservoir cap; and (ii) using the sensor to generate an output signal, wherein the output signal is recorded and stored in a writeable computer memory chips, directed to a microprocessor for immediate analysis and processing, or sent to a remote location away from the device.
摘要:
An implantable medical device is provided for use with an external detector to detect an analyte in vivo. In one embodiment, the device consisting essentially of a substrate; a plurality of discrete reservoirs located in the substrate, each reservoir having at least one opening; a reacting component contained in each reservoir; and at least one non-degradable barrier layer covering each reservoir opening, the barrier layer being permeable to an analyte to be detected, wherein the reacting component remains inside the reservoirs and can react with the analyte to be detected, and wherein the device is adapted for implantation into the body of a patient.
摘要:
Methods for operating a sensor device are provided, which may include (a) providing at a site (e.g., implanting in a patient) a device which comprises at least first and second reservoirs, a first sensor and corresponding first reference sensor located within the first reservoir, a second sensor and corresponding second reference sensor located within the second reservoir, a first reservoir cap closing an opening in the first reservoir and a second reservoir cap closing an opening in the second reservoir, and a power source, control circuitry, and electrodes for selectively disintegrating each reservoir cap; (b) disintegrating the first reservoir cap and operating the first sensor and reference sensor; and (c) using the first reference sensor to determine whether the first sensor is operating properly. If not operating properly, then the control circuitry initiates disintegration of the second reservoir cap and operation of the second sensor and reference sensor.
摘要:
Microchip devices are provided which include a substrate having a plurality of reservoirs containing a secondary device, a reacting component, or a combination thereof. At least one barrier layer covers each reservoir to isolate the reservoir contents from one or more environmental components outside the reservoirs. The barrier layer can be selectively disintegrated or permeabilized to expose the isolated contents to the one or more environmental components. The secondary device preferably includes a sensor or sensing component, for example, a biosensor, or a light detection or imaging device, such as an optical fiber. Preferred reacting components include catalysts and reagent, which may be immobilized in the reservoirs.
摘要:
Disclosed is a device for performing radiation assisted chemical processing including a fluid path, defined at least in part by a first surface of a wall transparent to radiation useful for performing radiation assisted chemical processing, and a gas discharge or plasma chamber arranged for producing the radiation, wherein the chamber is defined at least in part by a second surface of the transparent wall, opposite the first A related method of forming a photocatalytic reactor comprises among other steps the step of wash-coating the fluid path so as to deposit a photocatalytic material therein, wherein the step of wash-coating includes depositing, and not depositing or removing photocatalytic mateπal, respectively, on a first portion or from a second portion of the of non-circular cross section of the path, the second portion including at least some of the first surface of the wall of transparent material
摘要:
The present invention provides a supporting unit of microfluid system having a smaller restriction on the number of the steps and capacity of the reaction and analysis that can be produced easily, and a microfluid-system supporting unit allowing mounting of complicated fluid circuits densely. The present invention relates to a microfluid-system supporting unit, comprising a first supporting plate and at least one hollow filament constituting the channel of the microfluid system, wherein the hollow filament is placed on the first supporting plate in any shape and a particular internal region of the hollow filament has a function.