288results about How to "Accurate volume" patented technology

The control of fluid introduction into and out of body conduits such as vessels, is of great concern in medicine. As the development of more particular treatments to vessels and organs continues it is apparent that controlled introduction and removal of fluids is necessary. Fluid delivery and removal from such sites, usually referred to as irrigation and aspiration, using fluid exchange devices that control also need to be considerate of potential volume and / or pressure in the vessel or organ are described together with catheter and lumen configurations to achieve the fluid exchange. The devices include several electrically or mechanically controlled embodiments and produce both controlled and localized flow with defined volume exchange ratios for fluid management. The applications in medicine include diagnostic, therapeutic, imaging, and uses for the introduction or removal of concentrations of emboli within body cavities.

The present invention provides an audio processing apparatus for automatically controlling gain. The audio processing apparatus includes an audio signal source and a sound reproduction device. The sound reproduction device attaches to the audio signal source, which includes a storage unit for storing a default gain value and a gain index table. The gain index table lists genre types with a genre gain value of each of the genre types. After receiving a play command signal, the audio signal source fetches an audio file to be played, reads a genre type of the audio file from a tag thereof, and processing the audio file to generate audio signals. The audio signal source further reads a genre gain value of the genre type from the gain index table, amplifies the audio signals by the genre gain value, and sends the amplified audio signals to the sound reproduction device to reproduce corresponding sounds.

A pump controller and pump controlling method for dispensing a precise amount of low viscosity fluid are provided in which the problems of double dispenses and stuttered dispenses are avoided. In particular, the timing of the valves and motors in the pumping apparatus are adjusted to avoid these problems.

A transdermal transport device includes a reservoir for holding a formulation of an active principle, and an array of needles which have bores in fluid communication with the reservoir to facilitate transporting the formulation to and from the reservoir through the needles. The device also includes a first actuator which drives the array of needles into the body, and a second actuator which pumps the formulation between the reservoir and the body through the needles. The first actuator is reversible to withdraw the needles from the body.

Devices and methods for tissue transfer are described where a cannula may be inserted into the breast of a subject at one of several points of entry. Insertion of the cannula into the breast may be accomplished by using a guidance system to distinguish between tissue types. Once desirably positioned, the cannula may be withdrawn from the breast while automatically (or manually) injecting the fat in multiple deposits of adipose tissue or fat such that the deposited fat remains within the tract formed by the withdrawn cannula. Multiple tracts of the deposited fat may be injected within the breast until the breast has been desirably remodeled and / or augmented.

A new method of process control for fusion welding maintains a controlled weld pool size or volume, for example in some applications a substantially constant weld pool size or volume. The invention comprises a method of linking machine and process variables to the weld pool size or volume in real time, thereby enabling constant weld pool volume control. The invention further comprises a method of using thermal inverse models to rapidly process real-time data and enable models-based control of welding processes so as to implement constant weld pool volume control.

The present invention describes a device and system for simulating normal and disease state cardiac functioning, including an anatomically accurate left cardiac simulator for training and medical device testing. The system and device uses pneumatically pressurized chambers to generate ventricle and atrium contractions. In conjunction with the interaction of synthetic mitral and aortic valves, the system is designed to generate pumping action that produces accurate volume fractions and pressure gradients of pulsatile flow, duplicating that of a human heart. Through the use of a remote handheld electronic controller and manual adjustments from a main control panel, the air pressure level, fluidic pressure, and heart rate is controlled to induce contractions that simulate a wide variety of heart conditions ranging from normal heart function to severely diseased or injured heart conditions.

A gastric coil manipulator includes a longitudinally extending shaft having a distal end and a proximal end and a flexible element with a portion thereof extending beyond the distal end of the shaft for the creation of a resilient arc, wherein an actuator cable is secured to the flexible element for manipulation of the portion of the flexible element extending beyond the distal end of the shaft.

A beverage forming method and system employing the introduction of air into the heater tank and / or an expansion chamber after liquid delivery is complete. An expansion chamber may be provided at the top of the heater tank and provide a tortuous flow path from an air inlet to the tank outlet.

A beverage forming method and system employing the introduction of air into the heater tank and / or an expansion chamber after liquid delivery is complete. An expansion chamber may be provided at the top of the heater tank and provide a tortuous flow path from an air inlet to the tank outlet.

Devices and methods for tissue transfer are described where a cannula may be inserted into the breast of a subject at one of several points of entry. Insertion of the cannula into the breast may be accomplished by using a guidance system to distinguish between tissue types. Once desirably positioned, the cannula may be withdrawn from the breast while automatically (or manually) injecting the fat in multiple deposits of adipose tissue or fat such that the deposited fat remains within the tract formed by the withdrawn cannula. Multiple tracts of the deposited fat may be injected within the breast until the breast has been desirably remodeled and / or augmented.

An apparatus for monitoring the consumption of fluid by a user, particularly fluids being drank from a container. The apparatus may be used with wide variety of container types. The fluid monitoring unit uses a pair of gears in rotational engagement with each other such that fluid passes around them and rotation of at least one gear is indicative of fluid consumption. The gears in at least one exemplary embodiment are arranged to have low frictional resistance with respect to each other and their respective axles such that the gears quickly and easily rotate and over a wide fluid flow range. This allows the apparatus to accurately and consistently monitor fluid flow from very low flow rates to high flow rates and therefore provide very reliable consumption information. The apparatus in one exemplary embodiment includes an electromagnetic drinking straw embodiment that allows a user to monitor the consumption of fluids from virtually any container type.

A method for precisely and accurately determining the volume of a test liquid aliquot which can be used to calibrate a liquid delivery device. The method is particularly useful for determining the volume of an aliquot of a test liquid which is complex or non-aqueous, or is both complex and non-aqueous. The test-stock mixture contains at least the test liquid and a stock solution including a first dye, the first dye having absorbance characteristics which are measurably distinguishable from the absorbance characteristics of a second dye. The test-stock mixture is mixed with a diluent including the second dye to form a sample solution to be used to measure absorbances of the first dye and the second dye. The volume of the test-stock mixture aliquot is calculated by using a formula based on the Beer-Lambert law which incorporates the measured absorbance values and a dilution characteristic of the test-stock mixture. The test liquid and the stock solution are combined gravimetrically in a controlled ratio so that the flow characteristics of the test-stock mixture correspond to the flow characteristics of the test liquid and without affecting the ability to distinguish the absorbance characteristics between the first dye and the second dye.

Fluid dispensing apparatus uses positive displacement of the fluid for accurate metering of the quantity of liquid applied to a surface. Positive displacement includes a metering volume that is filled and emptied so that each cycle corresponds to an accurate volume of material dispensed independent of viscosity. In one embodiment, a positive displacement pump is used with a variable speed air motor. The air motor drives the pump. A variable output air regulator supplies air pressure to run the air motor based on a position signal. A profile may be used to relate position with motor speed and to control quantity to be dispensed.

The present invention discloses a shale oil and gas integration output analysis method based on a dynamic leakage flow volume. The method comprises: arranging and preparing data; preliminarily estimating a limit leakage flow volume and effective fracture half-length, and calculating a dynamic leakage flow volume, a reservoir average pressure change and pressure correction factors; drawing an output normalization pseudopressure curve, calculating a fluid diffusion coefficient in a fracture reconstruction area, drawing a square root time characteristic curve, calculating the effective fracture half-length, and determining the limit leakage flow volume and the final output degree according to the correction Duong method; if the effective fracture half-length and the limit leakage flow volume calculation value are very different from an input value, substituting the calculation value into the step 2 again to perform circulation until the convergence is consistent so as to obtain the accurate effective fracture half-length and the limit leakage flow volume; substituting a dynamic leakage flow volume formula into a macroscopic material balance model, and performing comparison to obtain the accumulation contribution of the size of the fracture reconstruction area to the shale oil and gas production; and determining an optimal fracture horizontal well fracture interval and an optimal well spacing. The shale oil and gas output dynamic analysis and evaluation accuracy is improved.

A system configuration and techniques for optimizing schedules and associated use predictions of a multiple resource planning workflow are disclosed herein, applicable to environments such as radiologist scheduling in a teleradiology workflow. In one embodiment, a series of computing engines and components are provided to allow detailed forecasting and the generation of customized recommendations for scheduling and other resource usage scenarios. This forecasting can factor resource efficiencies, changes in resource demand volume, resource specialties, resource usage preferences, expected future events such as the removal or addition of resources at future times, and other resource availability or usage changes. The forecasts may be further enhanced through the use of historical data models and estimated future data models. Additionally, a calendar and other tools may be presented through a user interface to allow forecast and scenario customization based on selection of a series of future dates.