FLUIDNET CORPORATION Patent applications |
Patent application number | Title | Published |
20120041413 | PORTABLE INFUSION MANAGEMENT APPARATUS AND METHOD - A portable infusion apparatus and method are provided for controlling the delivery of medicinal fluid to a patient. | 02-16-2012 |
20110251557 | FLOATING GEARBOX APPARATUS AND METHOD - A floating gearbox includes an outer housing with first and second side walls opposite and spaced apart from each other and an inner gear assembly received within the outer housing. The inner gear assembly comprises an inner housing, a first gear member rotatably received within the inner housing, and a second gear member having an output shaft rotatably supported on the inner housing. A slider plate received within the outer housing has first and second pairs of axially aligned elongate openings, wherein the first and second pairs of elongate openings align with a first axis and a second axis, respectively. Pins on the first sidewall are received in the first pair of elongate openings to allow relative sliding movement between the outer housing and the slider plate along the first axis. The inner housing includes pins received in the second pair of elongate openings, allowing relative sliding movement between the inner housing and the slider plate along the second axis. | 10-13-2011 |
20110168270 | EXTENDED RANGE FLUID FLOW RESISTOR - In one aspect, an extended range fluid flow resistor includes a housing having an inlet and an outlet and defining a fluid passageway therebetween A plunger is slidably received within the fluid passageway and an actuator is rotatably coupled to the housing and the plunger, such that rotation of the actuator causes sliding movement of the plunger within the fluid passageway The plunger has a sealing region and a variable flow region axially adjacent the sealing region Fluid flow through the fluid passageway is prevented when the sealing region is aligned with the inlet and fluid flow through the fluid passageway is permitted when the variable flow region is aligned with the inlet The variable flow region includes a helical groove extending from a first end of the variable flow region adjacent the sealing region and away from the sealing region to a second end of the vanable flow region. | 07-14-2011 |
20110046900 | IMPULSE ANALYSIS FOR FLOW SENSOR-BASED FLUID CONTROL SYSTEM - A fluid flow control system using flow rate changes to extract additional information from an in-line flow sensor. The system provides the ability to determine a position of a movable flow sensor element of a flow sensor by illuminating a photosensitive pixel array with a light source to create a first set of pixel intensity values, introducing an abrupt change to the fluid driving pressure, illuminating the photosensitive pixel array with a light source to create a second set of pixel intensity values, and calculating the difference between the first and second sets of pixel intensity values as a function of pixel position. | 02-24-2011 |
20110028937 | AUTOMATED FLUID FLOW CONTROL SYSTEM - A system for controlled delivery of medicinal fluid includes a fluid pathway assembly defining a fluid pathway and including means for calculating a first calculated fluid flow rate using gas laws. The fluid pathway assembly has an inline flow sensor element received within the fluid pathway movable in response to fluid flowing in the fluid pathway. A flow control device is removably attached to the fluid pathway assembly and has a sensor for sensing a position of the inline flow sensor element in the fluid pathway, the position of the inline flow sensor element being representative of a second calculated fluid flow rate. The fluid pathway assembly includes a variable flow resistor adjustable to regulate a rate of fluid flow in the fluid pathway assembly. A drive mechanism attached to the flow control device is operably coupled to the variable flow resistor when the flow control device is attached to the fluid pathway assembly. The variable flow resistor is adjustable by the drive mechanism to achieve a target flow rate when the first calculated flow rate and/or the second calculated flow rate differs from the target flow rate. | 02-03-2011 |
20100063765 | Flow Sensor Calibrated by Volume Changes - An infusion pump and method are provided which combine flow rate measurements calibrated by accurate volume measurements over time. | 03-11-2010 |
20090131863 | Volume Measurement Using Gas Laws - A system and method for measuring fluid volume and changes in fluid volume over time, using a simple, low cost architecture is described. | 05-21-2009 |
20090026146 | Flow Control System and Method with Variable Pressure and Variable Resistance - An infusion pump and method are provided which control flow rates with variable fluid pressure and variable series flow resistance. | 01-29-2009 |