57 results about "Bleeding control" patented technology

A biopsy device and method are provided for obtaining a tissue sample, such as a breast tissue biopsy sample. The biopsy device includes a disposable probe assembly with an outer cannula having a distal piercing tip, a cutter lumen, and a cutter tube that rotates and translates past a side aperture in the outer cannula to sever a tissue sample. The biopsy device also includes a reusable hand piece with an integral motor and power source to make a convenient, untethered control for use with ultrasonic imaging. The reusable hand piece incorporates a probe oscillation mode to assist when inserting the distal piercing tip into tissue. External vacuum holes along the outer cannula (probe) that communicate with a vacuum and cutter lumen withdraw bodily fluids while a hemostatic disk-shaped ring pad around the probe applies compression to an external hole in the skin and absorbs fluids.

The ink of the invention comprises a vehicle and a colorant. The colorant is a water-insoluble pigment that has been chemically modified to be water dispersable by addition of functional groups to the surface of the pigment resulting in water soluble colorant particles. The performance of these pigments is improved by the addition of specific functional groups which provide improved black to color bleed control and high waterfastness.

Two classes of solvents, organic esters and diols and triols, help to reduce bleed between black (pigment-containing) inks and color (water-soluble dye-based) inks when used in formulating inks that contain self-dispersed pigments. The solvents help self-dispersed pigments to agglomerate by producing successful mutual collisions when the electrostatic potential is reduced with positively charged color inks. It appears that these solvents may be changing the dielectric constant of the ink, thereby reducing the repulsion potential of the pigment particles themselves.

The ink set of this invention comprises an anionic black pigmented ink and at least one color ink containing a dye or pigment colorant. The performance of these ink sets is improved by the addition of specific cationic surfactant or cationic (quaternary) salts which interact with the anionic black pigmented ink to provide improved black to color bleed control.

The ink of the invention comprises a vehicle and a macromolecular chromophore colorant. The colorant is a water-insoluble pigment that has been chemically modified to be water dispersible by addition of functional groups to the surface of the pigment resulting in water dispersible colorant particles. The performance of these pigments is improved by the addition of specific functional groups which provide improved black to color bleed control and high waterfastness.

The ink set of this invention comprises at least two inks, one of which contains a pH sensitive polymer and pigment colorant with dispersant. A second ink is provided which comprises incompatible inorganic or organic salts or has an appropriate pH. The polymer precipitates onto a medium upon contact with the second ink, thereby providing improved bleed control.

In accordance with the invention inks suitable for use in ink-jet printers and method for using the same are provided. More particularly, inks comprising the present dye set exhibits excellent color performance and lightfastness across a range of media. Furthermore, the dye set enables good reliability in an environment having a relatively high concentration of precipitating agents. This reliability enables the use of precipitation bleed control mechanisms. More specifically, a specific dye set for formulating the yellow, magenta, and cyan inks is disclosed, comprising Acid Yellow 17 and a yellow dye according to Formula I; Acid Red 52 and a magenta dye according to Formula II; and Direct Blue 199 and Acid Blue 9; respectively.

Compositions, systems, and methods for ink-jet printing having improved black to color bleed control, reduced wicking, and / or reduced halo are described. The composition can include a functionalized carbon pigment dispersed in an ink vehicle. The carbon pigment includes functional groups chemically attached thereto. Suitable functional groups includes an aromatic ring structure having multiple carboxyl groups (or salts thereof) attached to the aromatic ring structure, wherein at least two of the multiple carboxyl groups are positioned on adjacent carbon atoms of the aromatic ring structure.

A system and method for regulating and actuating bleed over a structure exposed in a fluid motion are disclosed. The bleed inlet and outlet are formed on the surface of the structure establishing fluidic communication across surfaces. The disclosed system and method contemplates active control and regulation of the bleed to modify crossflow properties such as, aerodynamic forces, hydrodynamic forces, vorticity, and moments.

An ink jet ink composition comprising an anti-curl agent and ink jet printing processing using such ink jet ink composition. The ink jet ink composition includes a hyperbranched polymer. The hyperbranched polymer acts as an anti-curl agent to control curl during a printing process. The anti-curl agent, i.e., the hyperbranched polymer, may be present in the ink in amounts less than conventional anti-curl agents and still effectively control curl without detrimentally affecting intercolor bleed control, water fastness or drying. Additionally, the ink compositions do not exhibit increases in viscosity, and problems associated therewith, that occur in ink compositions using conventional anti-curl agents.

The invention provides a silicon-controlled dimming LED drive circuit. The source electrode of a bleeding switch MOS transistor is connected with the circuit ground through a resistor, the drain electrode of the bleeding switch MOS transistor is connected to the voltage signal end of a bus through a bleeding resistor, and the grid electrode of the bleeding switch MOS transistor is connected with the circuit ground through a second capacitor and is also connected with the output end of a first switch of a bleeding control module through a resistor. A first sampling resistor is coupled between the bleeding switch MOS transistor and the first input end of a comparator of the bleeding control module so as to obtain a first sampling voltage signal. The bleeding control module receives the first sampling voltage signal through the first input end of the comparator, compares the first sampling voltage signal with the voltage signal of a reference voltage source and controls switching-on and switching-off of the first switch, so that the bleeding switch MOS transistor is driven to control the minimum input current of the LED drive circuit, and therefore the holding current of a silicon-controlled dimmer is controlled. Through the intelligent control by the bleeding control module, the input current of the LED drive circuit can meet the requirement for the holding current of the silicon-controlled dimmer.

The use of a styrene-maleic anhydride copolymer in self-dispersed black pigment inks provides a means of achieving black-to-color bleed control against color.

The invention discloses a test device of tire-bursting or rapid air leakage for an automobile. N numbered air-bleed holes are drilled on a rim and air in tires is communicated with an air-bleed control valve by respective gas-guide tube through the N numbered air-bleed holes. A control valve base at one side of a control cavity B is provided with a control valve body, an air-bleed cavity body and an air-bleed cavity cover; the control valve body is internally provided with I-shaped slide blocks and the control valve body positioned among the slide blocks is provided with a air leakage port; one side of the slide block is communicated with the control cavity B and the other side thereof is communicated with the control cavity A; the air leakage cavity body is provided with N-1 numbered air leakage holes which are respectively communicated with N-1 numbered gas-guide tubes; the control valve base is provided with the air-bleed holes in a radial direction, one end of which is communicated with the n air-guide tube and the other end of which is communicated with the control cavity B by a two-phase three-way magnetic valve; and the magnetic valve realizes communication between the control cavity B and the n air-guide tube or between the control cavity B and atmosphere and is connected with a remote control switch. The invention adopts the remote control switch and the two-phase three-way magnetic valve with small flow to control opening / closing of big flow, thereby finishing the test of the tire-bursting or the rapid air leakage for the automobile.

An engine bleed control system for a gas turbine engine of an aircraft is provided. The engine bleed control system includes an engine bleed tap coupled to a fan-air source or a compressor source of a lower pressure compressor section before a highest pressure compressor section of the gas turbine engine and a motorized compressor in fluid communication with the engine bleed tap. The engine bleed control system also includes a controller operable to selectively drive the motorized compressor to boost a bleed air pressure as pressure augmented bleed air and control delivery of the pressure augmented bleed air to an aircraft use.

The present invention relates to a compressive band and hemostatic dressing system and related methods of use to provide rapid, non-occlusive bleeding control, arterial injury treatment, and injury protection comfortably and reliably after vascular access procedures. The present invention may comprise some or all of the following elements: a positioner assembly, a compressive cushion component, a compression plate, a strap with a flexible hinge assembly, and a hemostatic dressing. In a preferred embodiment, the systems and methods are applied to treat and ameliorate vascular injury in a transradial percutaneous access procedure and protect against underlying vascular injury; however, the systems and methods described herein may be applied to any vascular access procedure including arm or leg vascular approaches such as the femoral, brachial, dorsalis pedis or tibial blood vessels in arterial or venous line or sheath removal or trocar removal, and in hemodialysis.

The present invention provides an ink for inkjet printing, comprising an aqueous vehicle, a pigment colorant and an effective amount of 3-butoxypropylamine as a bleed control agent. The ink exhibits reduced intercolor bleed when printed, for example, on plain paper.

The invention discloses a novel hemostatic material and a preparation method thereof. The novel hemostatic material is a polymer generated by performing copolymerization-crosslinking and surface crosslinking treatment on mineral clay and acrylate, wherein mineral clay is subjected to purification, pickling purification and high-temperature activation pretreatment and serves as a main raw material. The novel hemostatic material disclosed by the invention overcomes the shortcomings of an existing commonly used hemostatic product, particularly a hemostatic material for moderate and severe wounds, and is applicable to bleeding control and first aid of the moderate and severe wounds. A test shows that the novel hemostatic material has the characteristics of high efficiency, quickness, convenience in use and low cost, does not have any side effect, is safe to a human body, and is favorable for large-area popularization and use in the future.

An ink-jet ink which includes a liquid vehicle and a polymer-dispersed pigment dispersed in the liquid vehicle is disclosed and described. More specifically, the polymer-dispersed pigment can include a pigment encapsulated with a polymer having hydrophilic and hydrophobic moieties. The polymer can be a polymerization product of at least a first monomer having a hydrophilic group, and a second monomer having a hydrophobic group. Further, the polymer can be configured such that the polymer-dispersed pigment is stable in the liquid vehicle at a pH of from about 5.5 to about 8.5. Such polymer-dispersed pigments allow for formation of ink-jet inks with improved options for bleed control mechanisms and increased reliability of ink-jet architecture.

A control strategy for bleeding an anode side of fuel cell stack in a fuel cell system that improves water management and addresses durability and performance concerns. The method includes determining when to begin the anode bleed, typically by estimating or measuring the amount of nitrogen in the anode side of the stack. The method also includes determining when to end the anode bleed based on the volume of gas that has been bled. The method determines the mole flow rate of the anode gas flowing through a bleed valve, integrates the mole flow rate to get the number of moles of the gas that have passed through the bleed valve, determines a desired amount of moles to be bled, and ends the bleed when the actual number of moles of the gas equals the desired number of moles of the gas.

The present invention relates to a compressive band and hemostatic dressing system and related methods of use to provide rapid, non-occlusive bleeding control, arterial injury treatment, and injury protection comfortably and reliably after vascular access procedures. The present invention may comprise some or all of the following elements: a positioner assembly, a compressive cushion component, a compression plate, a strap with a flexible hinge assembly, and a hemostatic dressing. In a preferred embodiment, the systems and methods are applied to treat and ameliorate vascular injury in a transradial percutaneous access procedure and protect against underlying vascular injury; however, the systems and methods described herein may be applied to any vascular access procedure including arm or leg vascular approaches such as the femoral, brachial, dorsalis pedis or tibial blood vessels in arterial or venous line or sheath removal or trocar removal, and in hemodialysis.

An ink jet ink composition comprised an anti-curl agent and ink jet printing processing using such ink jet ink composition. The ink jet ink composition includes a hyperbranched polymer. The hyperbranched polymer acts as an anti-curl agent to control curl during a printing process. The anti-curl agent, i.e., the hyperbranched polymer, may be present in the ink amounts less than conventional anti-curl agents and still effectively control curl without detrimentally effecting intercolor bleed control water fastness or drying. Additionally, the ink composition do not exhibit increases in viscosity, and problems associated therewith, that occur in ink composition using conventional anti-curl agents.

An ink-jet ink which includes a liquid vehicle and a polymer-dispersed pigment dispersed in the liquid vehicle is disclosed and described. More specifically, the polymer-dispersed pigment can include a pigment encapsulated with a polymer having hydrophilic and hydrophobic moieties. The polymer can be a polymerization product of at least a first monomer having a hydrophilic group, and a second monomer having a hydrophobic group. Further, the polymer can be configured such that the polymer-dispersed pigment is stable in the liquid vehicle at a pH of from about 5.5 to about 8.5. Such polymer-dispersed pigments allow for formation of ink-jet inks with improved options for bleed control mechanisms and increased reliability of ink-jet architecture.

Disclosed is an aqueous inkjet ink comprising colorant and a bleed control agent comprised of 3-(2-methoxyphenoxy)-1-2-propanediol. The ink advantageously exhibits reduced intercolor bleed when printed, for example, on plain paper.

The invention discloses a degradable starch-based hemostatic material, a preparation method therefor and applications. The preparation method comprises steps: firstly, raw materials processing is carried out, namely, starch is cleaned in water; secondly, crosslinking is carried out, namely, ultrapure water is added in starch, the temperature is risen to 30-70 DEG C, sodium chloride and a sodium trimetaphosphate solution are added, heat insulation is carried out for 10-60min, a reaction with stirring is carried out for 2-48h, the solution pH is adjusted, and crosslinking starch is obtained; thirdly, enzyme pore forming is carried out, namely, the crosslinking starch, calcium chloride and alpha-amylase are mixed and reacted for 2-24 h, the reaction temperature is 50-75 DEG C, and the degradable starch-based hemostatic material is obtained after cleaning. The degradable starch-based hemostatic material can be used for preparing a hemostatic material of body surfaces and tissues in bodies, and preparing a bleeding control material for excessive bleeding of parenchymal viscera in the bodies or movable parts or parts difficult for haemostasis. The degradable starch-based hemostatic material is advantaged by good biological compatibility, degradation in bodies, low cost, simple preparation, convenient production, no toxins and environmental protection.

The invention discloses an X capacitor bleeding control method. The method includes the following steps that: pulse signals outputted by a zero crossing detection circuit are received in real time; whether the pulse signals are zero or not is judged; and first control signals for controlling the switching on of an AC load are generated and transmitted when it is judged that a time period during which the pulse signals are not zero exceeds a first preset time, wherein the AC load responds to the first control signals and is switched on so as to bleed stored energy of an X capacitor. According to the X capacitor bleeding control method provided by the invention, the AC load begins working only when it is judged that the pulse signals are not zero and the time period during which the pulse signals are not zero exceeds the first preset time, namely, after a power source is switched off, and therefore, the AC load will not consume the energy of a circuit in a time period when the AC load is not required to work, and thus, the problem of standby power consumption in prior art can be solved.

The invention provides a silicon-controlled dimming LED drive circuit. The source electrode of a bleeding switch MOS transistor is connected with the circuit ground through a resistor, the drain electrode of the bleeding switch MOS transistor is connected to the voltage signal end of a bus through a bleeding resistor, and the grid electrode of the bleeding switch MOS transistor is connected with the circuit ground through a second capacitor and is also connected with the output end of a first switch of a bleeding control module through a resistor. A first sampling resistor is coupled between the bleeding switch MOS transistor and the first input end of a comparator of the bleeding control module so as to obtain a first sampling voltage signal. The bleeding control module receives the first sampling voltage signal through the first input end of the comparator, compares the first sampling voltage signal with the voltage signal of a reference voltage source and controls switching-on and switching-off of the first switch, so that the bleeding switch MOS transistor is driven to control the minimum input current of the LED drive circuit, and therefore the holding current of a silicon-controlled dimmer is controlled. Through the intelligent control by the bleeding control module, the input current of the LED drive circuit can meet the requirement for the holding current of the silicon-controlled dimmer.

A kit is provided including a base with an insert which has a plurality of compartments therein. The compartments are in fluid communication with each other. Liquid bleeding control agent is expressed into the base and allowed to flow to each of the compartments, such as through ports and inside slots between adjacent compartments. Pads reside within each of the compartments, which each include a gauze portion and a gel foam portion. The gel foam portion is wetted by the liquid bleeding control agent, which can be expressed from a syringe provided as a portion of the kit and which flows into the compartments for uniform wetting of gel foam portions of each of the pads. Pads are used during a surgical procedure and then returned to vacant compartments, so that a quick check for remaining vacant compartments indicates whether or not any pads have remained within the surgical site.

The invention discloses an engine air bleed valve control device and an engine control system. The engine air bleed valve control device comprises a rotation speed sensor, an electronic controller and an air bleed control valve. The electronic controller is connected with the air bleed electromagnetic valve. The air bleed electromagnetic valve is connected with an air bleed valve. The rotation speed sensor is used for sensing the rotation speed of an engine. The electronic controller is connected with the rotation speed sensor and used for collecting the rotation speed of the engine so as to control the air bleed electromagnetic valve to be switched on according to the rotation speed of the engine so that the air bleed valve can be opened or control the air bleed electromagnetic valve to be switched off according to the rotation speed of the engine so that the air bleed valve can be closed. According to the engine air bleed valve control device and the engine control system, the technical problems that when a traditional mechanical hydraulic control mode is adopted, the structure is complex, an air bleed valve is prone to being affected by oil pressure fluctuation, and the opportunity for opening or closing the air bleed valve is difficult to adjust are solved, the structure is simple, and the control precision and the reliability are high.