摘要:
The present invention is directed to valves for use in controlling the flow of fluid and, more particularly, to a triggerable passive valve for use in controlling the flow of fluid. In one embodiment, a fluid delivery channel is connected to a flow restrictor and a passive valve positioned in the fluid delivery channel downstream from the flow restrictor. The first passive valve prevents fluid from moving through the channel when the pressure exerted by the fluid on the first passive valve is below the burst pressure. A pneumatic actuator actuates the valve by forcing fluid through the passive valve.
摘要:
Devices for determining the concentration of an analyte in a fluid are provided. Also provided are systems and kits for use in practicing the subject methods.
摘要:
The present invention is directed to methods for controlling the flow of fluid and, more particularly, to a method of using triggerable passive valves to control the flow of fluid. In one embodiment of the present invention a method of using triggerable passive valves to control the flow of fluid is described wherein fluid is moved through a passive valve by providing pneumatic pressure between the passive valve and a flow restrictor, the pneumatic pressure exerted causing the pressure exerted by the fluid on the passive valve to exceed the burst pressure of the passive valve.
摘要:
The present invention is directed to microfluidic circuits and, more particularly, to a microfluidic circuit including triggerable passive valves. In one embodiment of a microfluidic circuit including a triggerable passive valve according to the present invention, the microfluidic circuit includes first and second triggerable valves in series. In a further embodiment of a microfluidic circuit including an array of triggerable passive valves according to the present invention, the microfluidic circuit includes first and second triggerable valves in parallel.
摘要:
A microfluidic analytical system for monitoring an analyte (for example, glucose) in a liquid sample (e.g., ISF) includes an analysis module with at least one micro-channel for receiving and transporting a liquid sample, at least one analyte sensor for measuring an analyte in the liquid sample and at least one position electrode. The analyte sensor(s) and position electrode(s) are in operative communication with the micro-channel. The microfluidic system also includes a meter configured for measuring an electrical characteristic (such as impedance or resistance) of the position electrode(s). Moreover, the measured electrical characteristic is dependent on the position of the liquid sample in the micro-channel that is in operative communication with the position electrode for which an electrical characteristic is measured.