146 results about "Fluid composition" patented technology

Described here are systems and methods for accessing Schlemm's canal and for delivering an ocular device or fluid composition therein. The ocular devices may maintain the patency of Schlemm's canal without substantially interfering with transmural fluid flow across the canal. The fluid composition may be a viscoelastic fluid that is delivered into the canal to facilitate drainage of aqueous humor by disrupting the canal and surrounding trabeculocanalicular tissues. Tools for disrupting these tissues and minimally invasive methods for treating medical conditions associated with elevated intraocular pressure, including glaucoma, are also described.

A system performs a method for characterizing passage of a patient fluid through a conduit. The method includes quantifying flow of fluidic content through a conduit, where the fluidic content includes a patient fluid, estimating a concentration of a fluid component of the patient fluid in the fluidic content, and characterizing passage of the patient fluid loss through the conduit based on the quantified flow and the concentration of the fluid component. At least one of the quantified flow or the concentration of the fluid component is based on sensor data from a sensor arrangement coupled to the conduit. Other apparatus and methods are also described.

Described here are systems and methods for accessing Schlemm's canal and for delivering an ocular device or fluid composition therein. The ocular devices may maintain the patency of Schlemm's canal without substantially interfering with transmural fluid flow across the canal. The fluid composition may be a viscoelastic fluid that is delivered into the canal to facilitate drainage of aqueous humor by disrupting the canal and surrounding trabeculocanalicular tissues. Tools for disrupting these tissues and minimally invasive methods for treating medical conditions associated with elevated intraocular pressure, including glaucoma, are also described.

Systems, devices, and methods herein may include a system for monitoring bodily fluid from a patient. In some embodiments, the system may be configured to collect bodily fluid samples from a patient periodically over time to determine a baseline bodily fluid composition. In some embodiments, the system may use spectrophotometry to determine the baseline bodily fluid composition for the patient. The system may be configured to compare a bodily fluid sample to the baseline bodily fluid composition to detect detecting changes in one or more characteristics of the bodily fluid sample (e.g., composition, absorption spectrum, etc.) from the baseline. Changes in the bodily fluid sample characteristics may be used to predict and / or detect abnormalities or infection for individualized diagnosis.

The invention concerns a method for relieving idiopathic ocular pain by administering an effective amount of a fluid composition comprising hyaluronic acid, a hyaluronic acid analogue, or a combination thereof, to the eye of a human or non-human animal subject, wherein the fluid composition is administered after onset of the idiopathic ocular pain and in the absence of detectable signs known to cause ocular pain.

Described here are systems and methods for accessing Schlemm's canal and for delivering an ocular device, tool, or fluid composition therein. The ocular devices may maintain the patency of Schlemm's canal without substantially interfering with transmural fluid flow across the canal. The fluid composition may be a viscoelastic fluid that is delivered into the canal to facilitate drainage of aqueous humor by disrupting the canal and surrounding trabeculocanalicular tissues. Some systems described here may be configured to cut or tear the trabecular meshwork with the body of an elongate member located within Schlemm's canal. Other tools for disrupting these tissues and minimally invasive methods for treating medical conditions associated with elevated intraocular pressure, including glaucoma, are also described.

Systems and methods for infection prevention and treatment in biological conduits using electroporation or pulsed field ablation (PFA). The system includes an elongate member, such as a dialysis catheter, vascular access device, or peritoneal dialysis conduit, with at least one electrode positioned along, within, or around the member. A control unit applies pulsed electric fields to inhibit microbial colonization, disrupt bacterial biofilms, and alter permeability of bacterial or endothelial cells to enhance sterility or fluid exchange. The system may use real-time impedance monitoring, microbial detection, or fluid composition analysis to adjust electroporation parameters. Electroporation may synchronize with dialysis cycles or antimicrobial lock solutions. The method includes automated, clinician-controlled, or sensor-triggered treatments to reduce infections and improve device longevity. The system provides an alternative or augment to antibiotics, reducing the risk of drug-resistant infections while improving the longevity and safety of medical implants.

The disclosure relates to compositions and methods that include fluid compositions that include nanoparticles and an oxidizer. The fluid compositions can be used as hydraulic fracturing fluids during drilling operations.

Described here are systems and methods for accessing Schlemm's canal and for delivering an ocular device or fluid composition therein. The ocular devices may maintain the patency of Schlemm's canal without substantially interfering with transmural fluid flow across the canal. The fluid composition may be a viscoelastic fluid that is delivered into the canal to facilitate drainage of aqueous humor by disrupting the canal and surrounding trabeculocanalicular tissues. Tools for disrupting these tissues and minimally invasive methods for treating medical conditions associated with elevated intraocular pressure, including glaucoma, are also described.

A ocular irritant composition for personal defense includes a fatty acid at a concentration ranging from 5 wt % to 10 wt % of the composition, a thickening agent at a concentration ranging from 1.75 wt % to 8.75 wt % of the composition, a detergent at a concentration ranging from 1.03 wt % to 4.07 wt % of the composition, a surfactant at a concentration ranging from 2 wt % to 15 wt % of the composition, and water at a concentration ranging from 66 wt % to 90.21 wt % of the composition.

A method for determining the composition of a mixed working fluid in a temperature control system comprises the steps of: detecting the characteristics of the working fluid flowing through a fluid conduit at a specific location in the fluid conduit using a sensor; calculating a first concentration of a first refrigerant in the mixed working fluid at that location; and calculating a second concentration of a second refrigerant in the mixed working fluid at that location. The calculation of the first concentration of the first refrigerant is based on the detected characteristics and stored information. The stored information includes a first stored value of the first refrigerant and a second stored value of the second refrigerant. The calculation of the second concentration of the second refrigerant is also based on the detected characteristics and stored information. This calculation is based solely on the detected characteristics and stored information.

A method of thermally shocking a subsurface formation may comprise introducing an endothermic fluid composition into a wellbore fluidly connected to the subsurface formation, the endothermic fluid composition comprising an aqueous solution, ammonium chloride, and sodium hydroxide; reacting the ammonium chloride and sodium hydroxide, thereby decreasing a temperature of the endothermic fluid and producing ammonia; and exposing the reacted endothermic fluid composition to the subsurface formation, thereby thermally shocking at least a portion of the subsurface formation and inducing one or more fractures in the same.

In accordance with some embodiments herein, an apparatus is provided. The apparatus includes a conduit, a first electrode, a second electrode, a power source, a valve, and a controller. The conduit is configured to conduct a mixture along a flow path. The first electrode is placed proximal the flow path defined by the conduit. The second electrode is placed proximal the flow path defined by the conduit. The power source is configured to apply a voltage across the first electrode and the second electrode. The valve is coupled to the conduit and configured to control flow of the mixture through the flow path defined by the conduit. The controller is configured to determine a first capacitance of a first capacitor established by the first electrode, the second electrode, and the mixture flowing along the flow path. The controller controls the valve based upon the first capacitance.

A system for recovering ammonia from an endothermic reaction in a subsurface formation may comprise a subsurface formation; a wellbore fluidly connected to the subsurface formation; a tubing string positioned within the wellbore, wherein the wellbore and an exterior of the tubing string together define a wellbore annulus; a wellhead comprising one or more injection lines and one or more return lines fluidly connected to the wellbore; one or more fluid injection pumps configured to supply an endothermic fluid composition to the subsurface formation through the one or more injection lines and the tubing string, the endothermic fluid composition operable to form ammonia when reacted; and one or more ammonia retention vessels fluidly connected to the return lines for receiving the ammonia through the wellbore annulus.

To provide a composition and a method capable of storing one or more microorganisms in a liquid state for a long period of time at high density without functional deterioration of the microorganisms and while suppressing contamination by other microorganisms.SOLUTION: Provided is a plastic fluid composition comprising: (1) a microorganism; and (2) a polysaccharide or nanofibers made of the polysaccharide, where when the microorganism is a bacterium, the microorganism is contained at a microbial density of at least 1×107 CFU / mL and dispersed in the composition, and when the microorganism is a fungus, the microorganism is contained at a microbial density of at least 1×103 CFU / mL and dispersed in the composition.SELECTED DRAWING: None

Inhibitors of hydrogen embrittlement, which can include a terminal alkene or a terminal alkyne, such as an enyne are described. Compositions, such as treated fluid compositions, that include an inhibitor of hydrogen embrittlement, such as a terminal alkyne or a terminal alkene are described herein. Methods of treating a fluid, generating energy, transporting, or storing a treated fluid are also provided.

A method and apparatus for forming vascular-like channels involves liquid-in-liquid 3D printing utilizing two polymer solutions used as a printing ink and a matrix. Anionic polyacrylamide (APAM) is one of the polymer solutions and acts as the matrix material. Chitosan is the other polymer solution and acts as the printing ink. The chitosan printing ink is extruded through a print nozzle of a 3D printer onto the APAM matrix which covers the bottom of a petri dish while the nozzle is moved in a desired pattern for the channels. The chitosan and APAM polymer complexes self-assemble on the ink-matrix interface, locking chitosan polymers inside the matrix before they can spread and causing the formation of soft elastic membranous walls. The chitosan ink and APAM matrix can be removed after the polymer complex self-assembly. The printed chamber with membranous walls allows for liquid infusion to work as fluidic channels.

A system for recovering ammonia from an endothermic reaction in a subsurface formation may comprise a subsurface formation; a wellbore fluidly connected to the subsurface formation; a tubing string positioned within the wellbore, wherein the wellbore and an exterior of the tubing string together define a wellbore annulus; a wellhead comprising one or more injection lines and one or more return lines fluidly connected to the wellbore; one or more fluid injection pumps configured to supply an endothermic fluid composition to the subsurface formation through the one or more injection lines and the tubing string, the endothermic fluid composition operable to form ammonia when reacted; and one or more ammonia retention vessels fluidly connected to the return lines for receiving the ammonia through the wellbore annulus.

The invention discloses probiotics and a composition for promoting ocular surface injury repair and a preparation method, and belongs to the field of microorganisms, and the probiotics comprise at least one of bifidobacterium animalis subsp. Lactis and lactobacillus reuteri. In the application process, the probiotics can be prepared into a liquid or fluid composition, the composition can be coated on the ocular surface, the composition containing the probiotics can repair ocular surface injury, the repairing effect is good, symptoms such as pain and inflammation are avoided, and the life quality of a patient is improved.

A method for in-line sampling for a medical device includes prompting an operator of a medical device to establish a fluid communication between a fluid component collection set as received by the medical device and a sample system for sample collection, where the medical device prohibits removal of the fluid component collection set or a component thereof from fluid communication with the medical device until sample collection using the sample system is complete and the establishing of fluid communication between the fluid component collection set includes prompting the medical device to interpret a code disposed on an exterior-facing surface of the sample tube.

To provide technique capable of selectively inverting an article.SOLUTION: A method for deposition of a substance onto a substrate (6) according to an embodiment of the present invention provides the substrate (6) with a distance from a conductive spray nozzle (1) having an outlet part (2), supplies a liquid composition containing the substance to the spray nozzle (1), supplies a compressed gas around the fluid composition flowing out from the outlet part (2) of the spray nozzle (1), and supplies an electric field to the downstream of the outlet part (2) of the spray nozzle (1), thereby generating charged droplets from the liquid composition between the outlet part (2) of the spray nozzle (1) and the substrate (6), charged and collecting the generated droplets onto the substrate (6). This embodiment also relates to a facility for performing the method.SELECTED DRAWING: Figure 1

Fluid supply systems are provided. Fluid supply systems of interest include an operating fluid line, a primary flushing fluid line, a secondary fluid line, a flow control circuit fluidically connected to the distal end of the primary flushing fluid line and the distal end of the secondary fluid line, and configured to selectively permit passage of a primary flushing fluid and a secondary fluid through an outlet, and a single fluidic connection configured to fluidically couple to the flow control circuit, the operating fluid line, and a fluidic component of an instrument. Methods of analyzing a sample and assembling an instrument are also provided.

Disclosed is a gradient proportioning valve for liquid chromatography that includes a plurality of inlet ports configured to receive a plurality of fluids, a manifold connected to each of the plurality of inlet ports configured to mix the plurality of fluids in a controlled manner to provide a fluid composition, the manifold including a plurality of conduits internal to the manifold, each of the plurality of conduits receiving fluid through a respective one of the plurality of inlet ports, an actuation mechanism having a piston located within a bored structure surrounding the piston, the actuation mechanism configured to open and close at least one of the plurality of conduits in a controlled manner where the piston and the bored structure have a tight tolerance configured to create a fluid tight seal, and a common outlet port configured to receive the fluid composition.

A diverter acid fluid composition for use in the stimulation of oil wells during exploration thereof, named Quovadis is disclosed. The diverter acid fluid may be used for stimulating oil wells during matrix acidification. The role thereof is to improve the efficiency of processes of stimulation of wells by acid treatment allowing the fluid to come into contact with regions of low permeability of the carbonate rock matrix, i.e., regions of difficult access. The diverter acid fluid also removes permanent formation damage around the well, allowing for greater coverage of the treatment and, consequently, better use of the treatment.

Disclosed is a gradient proportioning valve for liquid chromatography that includes a plurality of inlet ports configured to receive a plurality of fluids, a manifold connected to each of the plurality of inlet ports configured to mix the plurality of fluids in a controlled manner to provide a fluid composition, the manifold including a plurality of conduits internal to the manifold, each of the plurality of conduits receiving fluid through a respective one of the plurality of inlet ports, an actuation mechanism having a piston located within a bored structure surrounding the piston, the actuation mechanism configured to open and close at least one of the plurality of conduits in a controlled manner where the piston and the bored structure have a tight tolerance configured to create a fluid tight seal, and a common outlet port configured to receive the fluid composition.

This disclosure provides certain strong cation-modified ion exchange resins and membranes useful for carrying out the removal of metal and metal ion contaminants in fluid compositions. Filtered liquid compositions with significantly reduced amounts of metals can be used in a microelectronic manufacturing process, such as liquids for removing photoresist. The cation-modified ion exchange resins and membranes of the disclosure can be configured for use in a microelectronic manufacturing system, which can be utilized in the system as a point of use metal-removal feature for liquids entering the system. Advantageously, the filter materials and methods of this disclosure showed considerable improvement in preventing degradation and the formation of color bodies and dimeric and oligomeric materials from ketones (e.g., cyclohexanone) in the liquid compositions while not compromising the filter material's ability to remove undesired metal ions.

Fluid supply systems are provided. Fluid supply systems of interest include an operating fluid line, a primary flushing fluid line, a secondary fluid line, a flow control circuit fluidically connected to the distal end of the primary flushing fluid line and the distal end of the secondary fluid line, and configured to selectively permit passage of a primary flushing fluid and a secondary fluid through an outlet, and a single fluidic connection configured to fluidically couple to the flow control circuit, the operating fluid line, and a fluidic component of an instrument. Methods of analyzing a sample and assembling an instrument are also provided.

This invention discloses a visualized microfluidic experimental device for gas-water-oil-solid-biomass multiphase and multicomponent fluids, comprising a fluid injection device and an experimental platform connected sequentially by pipelines. The fluid injection device includes an experimental pump; a microflow control chip is installed on the experimental platform; the experimental pump and the microflow control chip are connected by pipelines. This device, through the microfluidic chip, can observe in real time the transport patterns of fluids with different gas-water-oil-solid-biomass ratios and different chemical components in pipelines, pores, and fissures during experiments, as well as the particulate matter carrying capacity under different apparent volume ratios of bubbles, different flow velocities, different surfactants, and different fluid composition conditions. Furthermore, using this experimental device, the fluid within the microfluidic chip can be observed with a microscope during experiments, maximally reproducing the original experimental environment, clearly observing the fluid's movement direction and flow interface during the experiment, and dynamically monitoring the experimental dynamics in real time.