Abstract: A pump controllably moves a small quantity of fluid from a fluid chamber to an outlet port with a small inexpensive actuator powered for a very short amount of time, thereby optimizing cost, size, and battery efficiency. Multiple pumps can be housed in a single enclosure, allowing multiple drugs to each be injected through a single cannula or needle.

Abstract: A pump controllably moves a small quantity of fluid from a fluid chamber to an outlet port with a small inexpensive actuator powered for a very short amount of time, thereby optimizing cost, size, and battery efficiency. Multiple pumps can be housed in a single enclosure, allowing multiple drugs to each be injected through a single cannula or needle.

Abstract: A series of compressible members disposed with a vessel lumen designed to produce a flow rate that increases with respect to an increasing flow material pressure with the rate of increase having a stepped behavior. The first compressible member is designed so as to partially restrict flow so as to allow for only moderate increases in flow rate with respect to flow material pressure. Subsequent compressible members are designed to allow for increases in flow rate greater than the moderate rate of increase when the flow material pressure is above a given flow material pressure.

Abstract: A novel apparatus and associated methods for controlling the flow through a flow restrictor using a reshapable lumen. The lumen reshapes as a function of the pressure differential over the flow restrictor. Because flow rate is proportional by the fourth order of magnitude to the diameter of the lumen, small changes in the pressure differential allow for larger changes in the flow rate over conventional flow restrictor systems and provides for real time, fine-tuned adjustments to the flow rate.

Abstract: A football-shaped blockage within a vessel lumen designed to prevent any flow material from passing through the vessel lumen when suction is applied below the blockage or when the flow material pressure is below a given value, and further designed to allow flow when the flow material pressure increases above the given value by allowing the vessel lumen walls to expand around the football-shaped blockage or, alternately, to allow the football-shaped blockage to collapse in response to the increased pressure. A series of compressible members contained within the vessel lumen may also be coupled with the above mentioned blockage device to limit the flow rate beyond the given value. The compressible members are designed to partially restrict flow so as to initially allow for only moderate increases in flow rate with respect to flow material pressure, but with a pressure above a second given material pressure, greater increases in flow rate are allowed.

Abstract: A series of compressible members disposed with a vessel lumen designed to produce a flow rate that increases with respect to an increasing flow material pressure with the rate of increase having a stepped behavior. The first compressible member is designed so as to partially restrict flow so as to allow for only moderate increases in flow rate with respect to flow material pressure. Subsequent compressible members are designed to allow for increases in flow rate greater than the moderate rate of increase when the flow material pressure is above a given flow material pressure.

Abstract: Clamps to be used in conjunction with real-time or nearly real-time measurement of the flow rate of a fluid through a lumen. The clamps allow for more precise control over the volume of fluid delivered and over the flow rate. When the flow rate is determined to be too fast, the clamps are expanded, which slow down the flow rate. Conversely, when the flow rate is determined to be too slow, the clamps are returned to an unexpanded state, which increases the flow rate. Additionally, if an error state is observed, the clamps are designed to arrest flow, thereby preventing further delivery of fluid.

Abstract: Two chamber pumps and related methods provide a platform for measuring flow rate in about real time without contacting the material being pumped. Pressure and optional temperature sensors disposed in a pressurized chamber allow for fluid delivery calculations after being calibrated or by knowing the initial volume of the fluid to be delivered.

Abstract: Pumps and flow regulators provide relatively constant and known flow volume over time while maintaining isolation of the flow material. The pumps of the present disclosure provide real time monitoring of the volume of flow material delivered over time, and provides for adjustment of the pump or flow regulators to modulate the flow rate. Thus, flow may be substantially modeled to a desired flow profile with real time adjustments of the flow rates.

Abstract: A new and enhanced device and technique for mixing and dispensing a preserved agent is disclosed. The syringe-like device employs a novel piston fluid channel allowing for various chambers of the syringe to come into fluid communication when the piston is actuated. More especially, the person administering the preserved agent may visually confirm full resuspension and deliver an accurate dosage of the agent.

Abstract: A novel apparatus and associated methods for controlling the flow through a flow restrictor using a reshapable lumen. The lumen reshapes as a function of the pressure differential over the flow restrictor. Because flow rate is proportional by the fourth order of magnitude to the diameter of the lumen, small changes in the pressure differential allow for large changes in the flow rate over conventional flow restrictor systems and provides for real time, fine-tuned adjustments to the flow rate.

Abstract: Disclosed in a novel apparatus and associated methods for controlling the flow around a reshapable flow restrictor. The flow restrictor reshapes as a function of the pressure differential within the flow restrictor. Small changes in the pressure differential allow for larger changes in the flow rate over conventional flow restrictor systems and provides for real time, fine-tuned adjustments to the flow rate.