717 results about "Fluid transport" patented technology

A device for delivering fluid to a person includes a reservoir for containing a fluid to be delivered to the person; a fluid transport device for dispensing fluid from the reservoir to the person, the fluid transport device including a proximal end in fluid communication with the reservoir and a distal end having a penetrating member for piercing the skin of the person to facilitate the delivery of fluid to the person through the fluid transport device; a housing containing the reservoir and the fluid transport device, the housing including an exit port for receiving the distal end of the fluid transport device upon injection of the distal end into the person and means for securing a first wall of the housing to the skin of the person; and an injection activation device including a driving mechanism contacting the fluid transport device for driving the penetrating member from a first position within the housing, through the exit port to a second position, external to the housing and into the skin of the person.

A device for delivering fluid to a person including a reservoir for containing a fluid to be delivered to the person, a fluid transport device for dispensing fluid from said reservoir to the person, said fluid transport device including a proximal end in fluid communication with said reservoir and a distal end having a penetrating member for piercing the skin of the person to facilitate the delivery of fluid to the person through the fluid transport device, a housing containing said reservoir and said fluid transport device, said housing including an exit port for receiving said distal end of said fluid transport device upon injection of said distal end into said person and means for securing a first wall of said housing to the skin of the person, a injection activation device including a driving mechanism contacting said fluid transport device for driving said penetrating member from a first position within said housing, through said exit port to a second position, external to said housing and into the skin of said person, and an electrically driven actuator for activating said driving mechanism.

Diagnostic and surgical procedures may be performed on a beating heart using an assembly which includes a port and a fluid transport device. The port has a housing for insertion through a wall of the heart chamber and may include one valve disposed in the housing and an inlet connected to the housing. Methods for repair and diagnosis of the heart are also described. A specific method for repairing a mitral valve uses staples which may be banded together with a strip of material.

Improved microfluidic devices, systems, and methods allow selective transportation of fluids within microfluidic channels of a microfluidic network by applying, controlling, and varying pressures at a plurality of reservoirs. Modeling the microfluidic network as a series of nodes connected together by channel segments and determining the flow resistance characteristics of the channel segments may allow calculation of fluid flows through the channel segments resulting from a given pressure configuration at the reservoirs. To effect a desired flow within a particular channel or series of channels, reservoir pressures may be identified using the network model. Viscometers or other flow sensors may measure flow characteristics within the channels, and the measured flow characteristics can be used to calculate pressures to generate a desired flow. Multi-reservoir pressure modulator and pressure controller systems can optionally be used in conjunction with electrokinetic or other fluid transport mechanisms.

Methods for the creation of microspheres treat the clear, intact crystalline lens of the eye with energy pulses, such as from lasers, for the purpose of correcting presbyopia, other refractive errors, and for the retardation and prevention of cataracts. Microsphere formation in non-contiguous patterns or in contiguous volumes works to change the flexure, mass, or shape of the crystalline lens in order to maintain or reestablish the focus of light passing through the ocular lens onto the macular area, and to maintain or reestablish fluid transport within the ocular lens.

The invention is generally directed to systems and methods for fluid control, and more particularly to systems and methods for power and flow rate control for aspiration. In accordance with one embodiment, an aspiration system includes an aspiration line having distal and proximal ends and an aspiration port defined in the distal end; a fluid transport device operatively coupled to the proximal end of the aspiration line; and a flow restrictor operatively coupled to the aspiration line in between the fluid transport device and the aspiration port. To measure occlusion within the line, first and second pressure sensors are utilized, the first sensor being operatively coupled to the aspiration line between the port and the restrictor and the second sensor being operatively coupled to the aspiration line between the restrictor and the fluid transport device. The pressure differential between the two sensors can provide an indication of the onset, presence, and / or elimination of an occlusion.

An integrated radiopharmaceutical patient treatment system is disclosed including a patient support platform with an associated patient stimulus apparatus, an imager proximate the patient support platform, a radiopharmaceutical fluid delivery system for infusing a radiopharmaceutical fluid into a patient, a patient monitor to be associated with a patient, and an integrated system controller operably associated with the patient stimulus apparatus, imager, radiopharmaceutical fluid delivery system, and patient monitor to control and coordinate their operations. Within the patient treatment system the radiopharmaceutical fluid delivery system may be included comprising a radionuclide supply module, a radiopharmaceutical processing module, a quality control module, a patient injection module, and a controller. A hazardous fluid handling system including a docking station and a hazardous fluid transport device adapted to detachably dock with the docking station is further disclosed.

A method and apparatus for assembling microstructures onto a substrate through fluid transport. The microstructures being shaped blocks self-align into recessed regions located on a substrate such that the microstructure becomes integral with the substrate. The improved method includes a step of transferring the shaped blocks into a fluid to create a slurry. Such slurry is then dispensed evenly or circulated over the top surface of a substrate having recessed regions thereon. The microstructure via the shape and fluid tumbles onto the surface of the substrate, self-aligns, and engages into a recessed region.

System and method for selectively applying electrical energy to structures within or on the surface of a patient's body and controlling the flow of an electrically conductive fluid from the application site to provide or maintain a desired operating condition of the electrosurgical device. An electrosurgical probe is in communication with a fluid transport apparatus through a fluid transport lumen having an opening at an end proximate the application site and disposed proximate the electrosurgical probe. A controller in communication with the fluid transport apparatus provides control signals to the fluid transport apparatus in response to at least one operating parameter associated with the system. Based on the received control signals, the fluid transport apparatus adjusts a flow rate of the electrically conductive fluid at the application site through the fluid transport lumen in response to at least one operating parameter associated with the system.

An embodiment of a system for analyzing a body fluid of a patient comprises a fluid transport network that has a patient end configured to provide fluid communication with the body fluid in the patient and a fluid delivery point spaced from the patient end. A pump system is coupled to the fluid transport network. The pump system has an infusion mode in which the pump system is operable to pump an infusion fluid toward the patient end of the fluid transport network. The pump system has a draw mode in which the pump system is operable to draw the body fluid from the patient into the fluid transport network through the patient end. The system further comprises at least one fluid holder located near the fluid delivery point of the fluid transport network. The at least one fluid holder is positioned to receive a portion of the body fluid delivered to the delivery point by the fluid transport network. A laboratory-grade fluid analyzer is configured to receive the fluid holder and to measure at least one analyte in the portion of the body fluid.

The present invention provides a detection article including at least one fluid control film layer having at least one microstructured major surface with a plurality of microchannels therein. The microchannels are configured for uninterrupted fluid flow of a fluid sample throughout the article. The film layer includes an acquisition zone for drawing the fluid sample into the plurality of microchannels at least by spontaneous fluid transport. The film layer also includes a detection zone having at least one detection element that facilitates detection of a characteristic of the fluid sample within at least one microchannel of the detection zone.

The present invention is a bracket for a fluid transport tube including an elongated bracket body having a length in a longitudinal direction, a tube clamp for holding the fluid transport tube in a direction transverse to the longitudinal direction, a mounting component for securing the bracket body and tube clamp to the side of a car wherein the mounting component comprises a bolt passage hole for passing a bolt having a bolt head through the passage hole to secure the mounting component to the side of the car and a vibration-absorbing bushing 9 made of a rubber-like resilient material with an annular fitting groove 15 in the middle of its outer circumference in the thickness direction thereof fitted to the mounting component 5 in such a manner to clamp part of said bushing between the bolt head and said mounting component, and another part of said bushing between said mounting component and the car body.

A system and method for high-speed radiographic inspection of fluid transport vessels in which a radiation source and a radiation detector are positioned on opposite sides of the outside surface of the vessel. A positioning system is provided for moving and locating the radiation source and radiation detector longitudinally with respect to the vessel and for moving the radiation source and radiation detector circumferentially with respect to the vessel. In operation, the positioning system causes the radiation source and radiation detector to spiral along the vessel in a coordinated manner while the radiation source illuminates an adjacent region of the vessel with radiation. The radiation is converted into corresponding electrical signals used to generate images of objects in the radiation path. Finally, an operator inspects the images for defects.

A transluminal sheath is disclosed that permits instrumentation to be passed therethrough. The transluminal sheath comprises a composite structure with an inner layer, an outer layer, and a reinforcing layer. The materials comprising the inner and outer layer are plastically deformable and maintain their shape, once bent into a specific configuration. The reinforcing layer further has radiopacity enhancing coatings to improve visibility under fluoroscopy and a system of flutes running longitudinally, to enhance fluid transport and reduce friction.

Arrangements are provided including a base having a bore disposed therein extending from a first surface of the base through a second surface of the base, a fluid transport tube having a first end, a second end opposite the first end, and a lumen having an inner diameter, at least the second end of the tube being received within the bore of the base, and at least one fluid transport enhancing groove having at least a first section disposed in the second surface of the base and in fluid communication with the bore.

The present disclosure relates to aerosol delivery devices, methods of forming such devices, and elements of such devices. In some embodiments, the present disclosure provides devices configured for vaporization of an aerosol precursor composition that is stored in and / or transported to a heater by a porous monolith, which can be, for example, a porous glass or a porous ceramic. A heater can be in a heating arrangement with an external portion of the porous monolith or can be substantially internal to the porous monolith.

A system for the extraction, collection, processing and transplantation of cell subsets, including adult stem cells and platelets, in particular for tissue repair in regenerative medicine, comprises a set of disposable fluid-transport elements that are pre-connected or that include aseptic connectors for making interconnections between them in an aseptic manner or are adapted to be aseptically connected. The set usually includes three kits of disposable sterile elements, a collection kit, a processing kit, and a transplantation kit packaged in a blister pack on a support such as a tray, having one compartment for receiving each inter-connectable kit of the set. The set includes an extracting device, for example including a needle for bone puncture or vein puncture, for extracting bone marrow or other sources of cell subsets from a patient.

An embodiment of a system for analyzing a body fluid of a patient comprises a fluid transport network having a patient end configured to provide fluid communication with the body fluid in the patient and a fluid delivery point spaced from the patient end. A pump system is coupled to the fluid transport network. The pump system has an infusion mode in which the pump system is operable to pump an infusion fluid toward the patient end of the fluid transport network and a draw mode in which the pump system is operable to draw the body fluid from the patient into the fluid transport network through the patient end. At least one electrochemical test element is located near the fluid delivery point of the fluid transport network. The electrochemical test element is positioned to receive a portion of the body fluid delivered to the delivery point by the fluid transport network. An analyte detection system is configured to receive the test element and to measure at least one analyte in the portion of the body fluid.

The systems and methods described herein include a microfluidic chip having a plurality of microfeatures interconnected to provide a configurable fluid transport system for processing at least one reagent. Inserts are provided to removably interfit into one or more of the microfeatures of the chip, wherein the inserts include sites for interactions with the reagent. As will be seen from the following description, the microfluidic chip and the inserts provide an efficient and accurate approach for conducting parallel assays.

Microfluidic devices, systems, and methods measure viscosity, flow times, and / or pressures, other flow characteristics within the channels, and the measured flow characteristics can be used to generate a desired flow. Multi-reservoir pressure modulator and pressure controller systems, electrokinetic systems and / or other fluid transport mechanisms can generate the flow, controllably mix fluids, and the like.

System and method for selectively applying electrical energy to structures within or on the surface of a patient's body and controlling the flow of an electrically conductive fluid from the application site to provide or maintain a desired operating condition of the electrosurgical device. An electrosurgical probe is in communication with a fluid transport apparatus through a fluid transport lumen having an opening at an end proximate the application site and disposed proximate the electrosurgical probe. A controller in communication with the fluid transport apparatus provides control signals to the fluid transport apparatus in response to at least one operating parameter associated with the system. Based on the received control signals, the fluid transport apparatus adjusts a flow rate of the electrically conductive fluid at the application site through the fluid transport lumen in response to at least one operating parameter associated with the system.

A composite article comprises a fluid transport layer having first and second surfaces and a hydrophobic layer applied to the first surface of the fluid transport layer. When the composite article is used as a wound dressing, the first surface of the fluid transport layer provides a skin-facing surface. The hydrophobic layer comprises a plurality of discontinuities, and at least a portion of the discontinuities have a dimension sufficient to permit the passage of fluid through the hydrophobic layer and into the fluid transport layer.

Systems for sheath fluid and sample fluid transport from containers to an analytic device, such as a flow (cell) cytometer, are disclosed. These systems are sterile and remain so, as they are closed to the ambient environment. As a result, fluids of high purity reach the analytic device, and in the case of a flow cytometer, the desired cells are sorted in sort of high purity.

A method of simulating fluid transport in a system for stimulating a well in a material formation of a resource reservoir, the system comprising a conduit element arranged in said well, the conduit element comprising a conduit wall including one or more openings for discharging a fluid into the material formation surrounding the conduit element; the method comprising establishing and numerically processing a transport model of fluid transport inside the conduit element. The transport model further includes a model of fluid transport in a predetermined space around said conduit element.

A fluid transportation device includes: an outer case having a sealed space; a tube having elasticity; a fluid transport mechanism having fingers that occlude the tube and a cam that successively presses the plurality of fingers; a driving force transmission mechanism disposed so as to be overlapped with the fluid transport mechanism, and transmitting a driving force to the fluid transport mechanism; a reservoir disposed at a position so as not to overlap the fluid transport mechanism and the driving force transmission mechanism; a port through which the fluid is injected into the reservoir; and an electric power supply supplying electric power to the driving force transmission mechanism. In this fluid transportation device, at least the fluid transport mechanism, the driving force transmission mechanism, and the electric power supply are housed in the sealed space of the outer case.

An apparatus for sensing an analyte is described, wherein the apparatus includes an interface contact element that is used to establish an interface with a quantity of body fluid. The interface contact element is adapted to facilitate diffusion of a target analyte across the interface essentially free of net mass fluid transport. The quantity of body fluid is exposed to the interface contact element through micro-pathways. The apparatus can also include a sensing material adapted to sense the target analyte with at least one analytical method. Methods for using the apparatus in a non- or minimally invasive monitoring technique are also described. FIG. (1) illustrates a non-limiting embodiment of the apparatus used to test the principles of the invention.

The present invention relates to an absorbent material that can be used as an absorbent core in absorbent articles such as sanitary napkins, pantiliners, incontinence products, disposable diapers, etc. The material of the present invention is a nonwoven sheet, consisting of cellulosic fibers, optionally superabsorbent polymeric material, containing no binders, latexes, etc, relying on hydrogen bonding to produce the necessary structure. The material contains density gradients which direct fluid into the material and distribute it providing more effective fluid transport and efficient utilization of storage capacity. The material consists of two regions. In the first region, the material has a low-density stratum adjacent to one surface, overlaying at least one higher density stratum adjacent to the opposite surface of the sheet. These strata create a density gradient in the thickness direction (Z-direction) of the sheet. The second region consists of a fluid distribution structure that has a higher density than at least the lower density of the strata comprising the first region. The fluid distribution structure is in direct fluid communication with the adjacent strata in the first region, along their boundaries.

A method for making an apertured polymeric film web, the method comprising the steps of:a. providing a polymeric film web;b. providing a first process selected from the group consisting of, hydroforming, vacuum forming, needle punching, mechanical embossing, flocking, ultrasonics, printed hair, brushing, and combinations thereof;c. providing a second process, different from the first process, the second process selected from the group consisting of, hydroforming, vacuum forming, needle punching, mechanical embossing, ultrasonics, stretch rupturing, hydrocutting, hydrosonics, slitting, ring-rolling, and combinations thereof;d. forming three dimensional surface structures in the polymeric film web by the first process; ande. forming fluid transport apertures in the polymeric film web by the second process.