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1294 results about "Fluid level" patented technology
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Fluid-Fluid Level (FFL) is a well-described feature of Aneurysmal Bone Cyst (ABC) on cross-sectional imaging; but can also be seen in a variety of conditions including benign and malignant tumours.
Detection of fluids in tissue
InactiveUS7122012B2Easy to detectLow profileElectrotherapyMaterial analysis using microwave meansMedicineFluid level
A method of detecting a change (that is, an increase or a decrease) in the level of fluid in tissue in a first area of a body includes the steps of: applying electromagnetic energy, preferably in the frequency range of approximately 300 MHz to approximately 30 GHz, to a first volume of the body; measuring a resultant or returned signal; comparing the signal to a reference signal to determine if the fluid level in the tissue has changed. In one embodiment, the method detects changes in the level of fluid in tissue of a body by applying electromagnetic energy to a first volume of the body over a period of time (for example, using an antenna or antennae); measuring a resultant signal or a signal returned from the tissue; and comparing the signal to a reference signal to determine if a level of fluid in the tissue has changed during the period of time.
Owner:BAYER HEALTHCARE LLC
Fluid monitoring device
InactiveUS7327273B2Limited effectTimely attentionControlling traffic signalsMedical devicesCatheterEngineering
This invention relates to a device to monitor the administration of a fluid through a conduit, such as intravenous fluid, and detect the completion of fluid delivery by monitoring the fluid level inside a chamber. The device will monitor, through an optical fluid sensor comprising a radiation source, two sensors, a logic means, and an indicating means, the bottom half of any “user supplied” drip chamber that is normally full during the administration of fluids. When the fluid level in the chamber drops below a predetermined level, the indicating means will initiate an electromechanical device that releases a pinching device to occlude the conduit. The pinching device is a rotary pincher that derives its force from a torsion spring and is held in the open position by the electromechanical device.
Owner:HUNG ORLANDO R +2
Endoscopic ultrasonic surgical aspirator for use in fluid filled cavities
ActiveUS7871392B2Minimize damping vibrationVibration minimizationDiagnosticsSurgeryControl powerMedicine
An ultrasonic horn assembly is configured so that irrigating fluid can be supplied only to a vibrating tip portion of the ultrasonic horn and so that suction aspiration can occur through a portion of the ultrasonic horn not in contact with the irrigating fluid. Controllers supplying irrigation fluid during a surgical procedure and controlling suction aspiration via monitoring of fluid level in the patient cavity are operatively coupled one to another to coordinate control of the fluid level in the patient cavity. Circuitry controlling power, frequency and amplitude of the tip of the ultrasonic horn occurring as a result of operation of a source of ultrasonic signal generating power controls either or both the supply of irrigation fluid and the suction aspiration so as to minimize damping of vibration of the tip of the ultrasonic horn. An optical viewing element is provided to view the tip of the ultrasonic horn.
Owner:INTEGRA LIFESCI IRELAND
Endoscopic ultrasonic surgical aspirator for use in fluid filled cavities
ActiveUS20070162050A1Minimize damping vibrationVibration minimizationDiagnosticsSurgeryControl powerMedicine
An ultrasonic horn assembly is configured so that irrigating fluid can be supplied only to a vibrating tip portion of the ultrasonic horn and so that suction aspiration can occur through a portion of the ultrasonic horn not in contact with the irrigating fluid. Controllers supplying irrigation fluid during a surgical procedure and controlling suction aspiration via monitoring of fluid level in the patient cavity are operatively coupled one to another to coordinate control of the fluid level in the patient cavity. Circuitry controlling power, frequency and amplitude of the tip of the ultrasonic horn occurring as a result of operation of a source of ultrasonic signal generating power controls either or both the supply of irrigation fluid and the suction aspiration so as to minimize damping of vibration of the tip of the ultrasonic horn. An optical viewing element is provided to view the tip of the ultrasonic horn.
Owner:INTEGRA LIFESCI IRELAND
Fluid level sensor for a container of a negative pressure wound treatment system
InactiveUS20100036333A1Interrupt supplyWound drainsMedical devicesElectrically conductiveFluid level
An apparatus is provided for collecting medical waste fluids. The apparatus includes: a medical waste collection container for collecting medical waste fluids; first and second electrically conductive sensing elements disposed inside the container so as to be exposed to fluid collected in the container, where the first and second sensing elements are located inside the container at a position corresponding to a full fluid level at which point the container is full of fluid; and an electronic circuit coupled to the sensing elements for generating a full alarm signal when the electronic circuit determines that current can flow between the first and second sensing elements as a result of fluid in the container reaching the full fluid level and thereby completing a current path between the first and second sensing elements.
Owner:INVACARE CONTINUING CARE
Fluid delivery system, fluid path set, sterile connector and improved drip chamber and pressure isolation mechanism
InactiveUS7611503B2Reduce and eliminate flowReduce fluid pressurePharmaceutical delivery mechanismMedical devicesFluid levelContrast medium
The fluid path set is intended for use in a fluid delivery system. The fluid path set includes a multi-patient use section adapted for connection to a syringe used in the fluid delivery system, and to a source of fluid, such as contrast media, to be loaded into the syringe. The fluid path set further includes a per-patient use section that is removably connected to the multi-patient use section. A connector removably connects the multi-patient use section and the per-patient use section. A drip chamber is provided between the source of fluid and the syringe, and includes a projection for determining a level of fluid in the drip chamber. The per-patient use section includes a pressure isolation mechanism. The pressure isolation mechanism includes a lumen, a pressure isolation port, and a valve member with a biasing portion that biases the valve member to a normally open position.
Owner:BAYER HEALTHCARE LLC
RFID power control and monitoring system
InactiveUS20100231407A1Reduced Power RequirementsUtility meters data arrangementsWireless architecture usageTelecommunications linkThe Internet
A system for monitoring parameters associated with a device, such as current, voltage, power, temperature, energy consumed, moisture, fluid levels and flow, wind speed, identification parameters, and repair history. The system includes the use of hybrid RFID sensor tags including a combination of active, semi-passive, and passive RFID circuits. Hybrid tags are attached to electrical system components. Standalone electrical components and generators and those connected to the electrical grid may be monitored. Data collected and stored in the hybrid tags may be accessed via a wireless communication link between hybrid tags and either active scanners or a passive interrogators. The data collected and processed from the hybrid tags may be provided to a user via the Internet or another wired or wireless communication network.
Owner:NEW JERSEY MICROSYST
Oil management system for dual clutch transmissions
InactiveUS20050067251A1Solve the lack of balanceReduce flow of fluidFluid actuated clutchesGear lubrication/coolingEngineeringCentrifugal force
The present invention provides an improved fluid management system for dual and other multiple clutch assemblies having fluid-operated pistons and fluid operated balance chambers offsetting the undesired pressures exerted by fluids within the piston chamber induced by centrifugal forces. Among other improvements, the system provides an effective and cost efficient arrangement of fluid supply channels and supply openings capable of maintaining desired fluid levels in the balance chambers under low, otherwise insufficient, flow rate conditions. In another aspect, the system provides a reservoir for the balance chambers under conditions where the fluid flow is stopped or interrupted.
Owner:BORGWARNER INC
Determination And Control Of Wellbore Fluid Level, Output Flow, And Desired Pump Operating Speed, Using A Control System For A Centrifugal Pump Disposed Within The Wellbore
ActiveUS20080067116A1Enhance market appealBroad possible marketLevel controlWind motor controlEngineeringSystem parameters
A method and apparatus for determining a fluid level and / or output flow during operation of a centrifugal pump, are provided, which may be used for production of gas and / or oil from a well, and include a vector feedback model to derive values of torque and speed from signals indicative of instantaneous current and voltage drawn by the pump motor, a pump model which derives values of the fluid flow rate and the head pressure for the pump from torque and speed inputs, a pumping system model that derives, from the estimated values of the pump operating parameters, an estimated value of fluid level and other pumping system parameters. Controllers responsive to the estimated values of the pumping system parameters control the pump to maintain fluid level at the pump input, near an optimum level, or within a safe operating range and / or output flow from the pump.
Owner:UNICO LLC
Vaporizer apparatus
ActiveUS20160374399A1Robust mechanicalRobust electrical connectionTobacco pipesMedical devicesEngineeringFluid level
Owner:JLI NAT SETTLEMENT TRUST
System and method for predicting a heart condition based on impedance values using an implantable medical device
ActiveUS7272443B2Reliably predict onset of heart conditionHeart stimulatorsDiagnostic recording/measuringPulmonary edemaThoracic cavity
Owner:PACESETTER INC
Tube bottom sensing for small fluid samples
InactiveUS6270726B1Withdrawing sample devicesMaterial analysis by optical meansEngineeringFluid level
A pipetting station having a bottom sensing device is provided in conjunction with one of any known liquid level sensing devices. The bottom sensing device includes a pipetting probe spring mounted to a pipetting arm of the pipetting station. The bottom sensing device also includes a sensor for determining when a pipetting tip of the pipetting probe is in contact with a bottom of a tube. The bottom sensing device permits the pipetting probe to measure an exact volume of fluid in the tube by allowing the pipetting tip to be lowered to the bottom of the tube beyond the sensed fluid level.
Owner:SIEMENS HEALTHCARE DIAGNOSTICS INC
Fluid delivery system having a fluid level sensor and a fluid control device for isolating a patient from a pump device
ActiveUS7556619B2Reduce and eliminate flowReduce fluid pressureInfusion syringesMedical devicesFluid controlValve actuator
The fluid delivery system generally includes a source of injection fluid, a pump device a fluid path set disposed between the source of injection fluid and the pump device, and a fluid control device. The fluid path set includes a multi-position valve. The fluid control device is operatively associated with the fluid path set and includes a valve actuator adapted to operate the multi-position valve. The valve actuator is adapted to close the multi-position valve to isolate the pump device from a patient and stop flow of the injection fluid to the patient at substantially any pressure or flow rate generated by the pump device for delivering a sharp bolus of the injection fluid to the patient. The valve actuator is generally adapted to selectively place the pump device in fluid communication with the source of injection fluid for supplying the injection fluid to the pump device and the patient.
Owner:BAYER HEALTHCARE LLC
Liquid Container, Liquid Consuming Apparatus, Liquid Supply System and Liquid Container Unit
InactiveUS20140043408A1Reduce the possibilityImprove portabilityPrintingOther printing apparatusInjection portEngineering
A liquid container includes an ink chamber containing an ink to be supplied via a tube to a liquid ejecting head consuming the ink; an outlet port from which the ink contained in the ink chamber flows to the tube side; an injection port through which the ink can be injected into the ink chamber; and an air intake port taking air into the ink chamber from a further vertically upper position than a liquid level of the ink when the ink is contained in the ink chamber. If the ink equal to 5% of containing capacity containable in the ink chamber flows from the outlet port, the liquid container has an area where a fluctuation range of the liquid level of the ink inside the ink chamber becomes 5% or less of the cubic root of the containing capacity.
Owner:SEIKO EPSON CORP
Fluid volume alarm system
A fluid volume alarm system is presented. The alarm system has a container for storing fluid, and alarm module coupled to the container for notifying a user or observer that the fluid within the container has reached a predetermined level. The container has at least one exterior wall and defines an interior volume for at least temporary storage of fluid. In one aspect, there are at least two electrodes disposed on an interior portion of the exterior wall of the container and positioned at a position thereon an interior portion of the exterior wall corresponding to a predetermined fluid level at which it is desirable to receive an alarm. The system also has an alarm module configured to alert the practitioner that the fluid has met or has exceeded the predetermined level.
Owner:LINSENMEYER TODD A +2
Surgical cassette with multi area fluid chamber
A surgical cassette having an aspiration chamber or infusion chamber with a sensing portion and a storage portion. The sensing portion has a small transverse cross sectional area and facilitates accurate fluid level measurements. The storage portion has a larger transverse cross sectional area to facilitate fluid storage.
Owner:ALCON INC
Sensors and methods and apparatus relating to same
InactiveUS20110110794A1Easy to assembleReduce assemblyPositive displacement pump componentsFlexible member pumpsCurrent sensorElectrical connection
In one form a capacitive sensor is disclosed for immersion into a fluid, the capacitive sensor having a housing and first and second electrodes with the first electrode being disposed at least partially within the housing and electrically connected to a circuit, the second electrode being electrically connected to the circuit via an electrical connection and physically separated from the housing containing at least a portion of the first electrode so that at least a portion of the electrical connection or second electrode is located above or outside of the fluid to reduce the risk that minerals will form between the electrodes. In another form the electrodes are separated into their own cavities of the sensor housing via a bridging member which separates the electrodes to help reduce the risk of mineral buildup occurring between the electrodes. In other forms, capacitors, capacitive sensors, pump controls and systems utilizing these features are disclosed along with methods and apparatus relating to same. In yet other forms additional sensors such as current sensors, thermal sensors, speed sensors, torque sensors and Hall Effect sensors are disclosed for use alone or in combination with said capacitive sensor for detecting fluid level and / or controlling pumps. In still other forms, apparatus and methods relating to self cleaning pumps are disclosed.
Owner:MAYLEBEN PHILIP +2
Fluid level sensing and control system
InactiveUS6595051B1Easy to captureReduce system costFluid pressure measurement by electric/magnetic elementsElectric switchesControl systemTransducer
An improved pressure activated control apparatus is provided for sensing fluid pressure and triggering one or more switches in response to the fluid pressure, as desired. The apparatus is designed to be placed within a fluid of a reservoir. The apparatus includes a first resilient member, such as a pliable rolling diaphragm or bellofram, having an outer surface exposed to the fluid and responsive to the fluid pressure. The pressure activated control apparatus includes a second resilient member, such as a spring with a chosen spring constant, k, that provides a biasing force against the diaphragm that is opposite the fluid pressure. A transducer is operative to monitor changes in pressure of gases within the apparatus causes by movement of the diaphragm. A controller is responsive to the transducer and selectable fluid level thresholds to activate pumps and / or valves for adjusting the level of the fluid in the reservoir.
Owner:SJE RHOMBUS
System and method for predicting a heart condition based on impedance values using an implantable medical device
ActiveUS20050216067A1Reliably predict onset of heart conditionHeart stimulatorsDiagnostic recording/measuringPulmonary edemaThoracic cavity
Techniques are provided for predicting the onset of a heart condition within a patient based on impedance measurements. Briefly, overloads in fluid levels in the thorax and in ventricular myocardial mass within the patient are detected based on impedance signals sensed using implanted electrodes. The onset of certain heart conditions is then predicted based on the overloads. For example, pulmonary edema arising due to diastolic heart failure is predicted based on the detection of on-going overloads in both fluid levels and ventricular mass. Ventricular hypertrophy is detected based on an on-going ventricular mass overload without a sustained fluid overload. Various other heart conditions may also be predicted based on specific combinations of recent or on-going overloads. Evoked response is exploited to corroborate the predictions. Appropriate warning signals are generated and preemptive therapy is initiated.
Owner:PACESETTER INC
Drilling well control parameter intelligent monitoring system
InactiveCN101446191AJitter Errors Are UniformHigh precisionSurveyFlushingData platformDisplay device
The invention relates to a drilling well control parameter intelligent monitoring system which comprises a monitoring part for drilling fluid cycling volume, a monitoring part for drilling fluid inlet and outlet flow, a monitoring part for drilling fluid inlet density, outlet density, drilling temperature, outlet natural gas, and H2S concentration, a monitoring part for wellhead pitshaft flowing fluid level and table torque, and a collection instrument part. All the signals are transmitted into the collection instrument to be collected through an RS485 network cable; after data processing is carried out, the data is transmitted to a drill floor parameter display device and a central station host computer through a wireless data transmission device; the data storage, display and print are carried out by the host computer, and the data is simultaneously uploaded into a data platform processor of an upper-level command center; finally, remote control realtime processing and monitoring are carried out on all the well control parameters of all the drilling crews. The intelligent monitoring system has the beneficial effects of realizing omnibearing, long-distance and timely drilling well control, safe production, and playing better role in preventing the occurrence of accidents such as well kick, loss circulation, blow-out, etc.
Owner:北京奥林天成科技有限公司
Scalable, Multi-Vessel Distribution System for Liquid Level Control Within Immersion Cooling Tanks
ActiveUS20140216711A1Increase volumeLevel controlIndirect heat exchangersControl systemDistribution system
A fluid level control system includes: a first immersion cooling tank having a first volume of immersion cooling liquid and an inlet / outlet pipe extending from a base wall of the tank by which immersion cooling liquid can flow into and out of the first immersion cooling tank; at least one second volume of cooling liquid held within a liquid containing unit having a corresponding inlet / outlet pipe; and a pipe distribution system that physically connects the second volume of immersion cooling liquid to the first volume of immersion cooling liquid via respective inlet / outlet pipes and which enables fluid equilibrium to be maintained between the first volume of liquid and the second volume of liquid via gravitational equilibrium and / or passive level control such that a first volume level of the first volume of immersion cooling liquid remains substantially equal to a second volume level of the second volume of immersion cooling liquid.
Owner:DELL PROD LP
Controller system for downhole applications
Owner:OILFIELD EQUIP DEVMENT CENT
System for detecting fluid changes and sensoring devices therefor
ActiveUS8295920B2Reduce sensitivityEasy to disassembleMaterial analysis using microwave meansMedical devicesEngineeringFluid level
A sensor device for detecting a change fluid level within body tissue comprising a housing with bridge segments connecting at intersections arranged to circumscribe an opening. Further, antenna elements are partially seated within the housing at intersections of bridge segments, comprise a generally planar antenna mounted to a substrate material at a base of the planar antenna, and an electrical shield surrounding the substrate. Also, an outer surface of the planar antenna faces away from the substrate. The antenna elements comprise at least first and second antenna element pairs having transmitting and receiving antenna elements and a bridging segment. A high sensitivity zone is formed between the transmitting antenna and receiving antenna. The antenna element pairs are spaced to create an area of reduced sensitivity between the high sensitivity zones, and the space is set so that the sensor is insensitive to fluid changes of a predetermined volume.
Owner:BAYER HEALTHCARE LLC
Ophthalmic Surgical Cassette and System
A cassette 74 for use with an ophthalmic surgical pump 16 for collecting aspirant fluid and tissue from a patient's eye includes a rigid walled container 18 having an interior volume 42. At least one tapered alignment slot 20 is formed in a side wall of the container 18 and extends from a back wall 24 towards a front wall 26. An irrigation and aspiration manifold base 50 is removeably attached to the container 18. An aspiration path 46 is formed within the container 18 for receiving the aspiration fluid and the tissue from the eye and directing the flow of fluid towards a front half of the container 18 before the fluid and tissue collects within a majority of the interior volume 42 of the container 18. A fluid level indicator 34 is formed on a wall 22 of the container 18, such that an associated photo-detector 86 of the pump 16 may determine a level of fluid in the container 18.
Owner:BAUSCH & LOMB INC
Cycle control system for boiler and associated burner
A cycle control system for use with a boiler having a fluid therein and a method of monitoring a boiler to determine the presence of an adequate level of fluid therein. The cycle control system includes a timing circuit producing a burner control signal having alternating on and off states corresponding to on and off period timers to allow foam to settle so that a probe can accurately check the fluid level in the boiler. A burner monitor circuit monitors when a demand controller turns the burner on and off responsive to demand. The on-period timer is reset whenever the burner monitor circuit indicates the demand control circuit has turned off the burner for a length of time sufficient for the probe to accurately check the fluid level.
Owner:COWLES OPERATING CO
Automated inspection of aircraft landing gear internal fluid levels
ActiveUS20140046533A1Reduce system complexityRegistering/indicating working of vehiclesDigital data processing detailsJet aeroplaneAircraft landing
A system for use in monitoring, measuring, computing and displaying the volumes of internal gas within a telescopic aircraft landing gear strut. Pressure sensors and temperature sensors and motion sensors are mounted in relation to each of the landing gear struts to monitor, measure and record the impact movement and rates of internal landing gear strut fluids; experienced by landing gear struts, as the aircraft landing gear initially come into contact with the ground. The computer of this system measures the compression experienced by each landing gear strut and determines if the landing gear strut is improperly serviced with either excess or deficient volumes of nitrogen gas. Additional features include automating the inspections required to aircraft landing gear, prior to flight, during flight and during landing events.
Owner:NANCE C KIRK
Smart Container
A method and apparatus for coupling at least one electronic component to a smart container is disclosed. A fluid level indicator transducer coupled to the smart container for determining a level of fluid in the smart container and a hollow casing coupled to the smart container for storing at least one cigarette therein are also disclosed.
Owner:BALACHANDRAN SUHASINI +1
Fluid level sensing utilizing a mutual capacitance touchpad device
InactiveUS20070236469A1Fit closelyEasily able to conformLevel indicatorsInput/output processes for data processingSensor arrayElectrical conductor
A capacitance-sensitive sensor array and associated touchpad sensor circuitry, the sensor array comprised of a flexible substrate having a plurality of printed conductor elements disposed thereon to form the sensor array, the printed conductor elements being coupled to touchpad sensor circuitry that includes data processing capabilities, wherein the sensor array is disposed along an outside surface of a container, wherein the sensor array is capable of conforming to a curved or irregular outside surface of the container, wherein the sensor array detects at least one characteristic of at least one fluid disposed within the container, and wherein the touchpad sensor circuitry processes data received from the sensor array to provide information regarding the at least one fluid.
Owner:CIRQUE CORPORATION
Method for removing gases from a container having a powdered concentrate for use in hemodialysis
ActiveUS20110120946A1Easy to pressurizeLiquid degasificationSolvent extractionHaemodialysis machineProduct gas
An apparatus and a method for filling a container containing a dry powdered salt concentrate for use in dialysis with purified fluid and removing the trapped air or gases generated during the filling of the container, while maintaining the required fluid level in the container and without the need for evacuating gases from the container prior to filling.
Owner:FRESENIUS MEDICAL CARE HLDG INC
Determination and control of wellbore fluid level, output flow, and desired pump operating speed, using a control system for a centrifugal pump disposed within the wellbore
InactiveUS7668694B2Reduce lossesTotal current dropLevel controlWind motor controlStreamflowOperating speed
A method and apparatus for determining a fluid level and / or output flow during operation of a centrifugal pump, are provided, which may be used for production of gas and / or oil from a well, and include a vector feedback model to derive values of torque and speed from signals indicative of instantaneous current and voltage drawn by the pump motor, a pump model which derives values of the fluid flow rate and the head pressure for the pump from torque and speed inputs, a pumping system model that derives, from the estimated values of the pump operating parameters, an estimated value of fluid level and other pumping system parameters. Controllers responsive to the estimated values of the pumping system parameters control the pump to maintain fluid level at the pump input, near an optimum level, or within a safe operating range and / or output flow from the pump.
Owner:UNICO LLC
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