278results about How to "Control expansion" patented technology

Methods for delivery and deploying a stent formed of a shape memory alloy to a desired position in a tubular area of the body, and/or for repositioning and/or retrieving a stent formed of a two-way shape memory alloy. An arrangement is provided by which the temperature of the stent is locally adjusted during delivery, repositioning and/or retrieval in a safe and controlled manner by engagement with an expandable and collapsible thermal transfer member situated on a catheter assembly.

A self-cooled oxidant-fuel burner consisting novel fuel and oxidant nozzles and three compartment refractory burner block design is proposed. The new oxidant-fuel burner can fire in high-temperature (2200 DEG F. to 3000 DEG F.) and high-particulate (or high process volatiles/condensates) furnaces without over-heating or causing chemical corrosion damage to it's metallic burner nozzle and refractory burner block interior. Using various embodiments of nozzle and block shape, the burner can offer a traditional cylindrical flame or flat flame depending on the heating load requirements. The new features of this burner include unique fuel nozzle design for the streamline mixing of fuel and oxidant streams, a controlled swirl input to the oxidant flow for desired flame characteristics, a controlled expansion of flame envelope in the radial and axial dimensions, and efficient sweeping of burner block interior surface using oxidant to provide convective cooling and prevent any build up of process particulates. In addition, a relatively thick wall metallic nozzle construction with heat conduction fins enable efficient heat dissipation from the nozzle tip and providing a maintenance free burner operation.

An apparatus used to apply cryotherapy comprising at least one gel pack of a predetermined size and predetermined shape, a retaining means of a predetermined size and predetermined shape which is engageable with at least a portion of a gel pack and at least a portion of a body part for retaining the gel pack in any desired orientation while being disposed on the body part. It also includes at least one variable temperature means that is engageable with at least a portion of the gel pack for sustaining a predetermined temperature the gel pack during a predetermined time period.

Disclosed is an introducer apparatus comprising an sleeve fixation mechanism or introducer member, such as a catheter, introducer, or ring-like structure, which is attached to a protective sleeve comprising a thin flexible material such a polymeric film. The sleeve is inverted into the passageway of a second member, such as a catheter, feeding tube, introducer, etc., that is advanced through the passageway of the introducer member and is introduced into a bodily passage of a patient, such as the bile duct, nasal passages, colon, etc. The sleeve everts from the passageway of the second member during its advancement to lay down a friction-reducing surface. The sleeve prevents frictional contact between the second member and delicate or sensitive tissues.

A needle stick safety syringe includes a outer tubular protective cover or sleeve for the inner syringe body where a concentric coil spring is compressed against the normal flange of the inner syringe body and retained there by a stop which is cantilevered from a collar affixed to the distal end of the inner syringe body. This cantilevered stop also includes a convenient button which may be easily depressed by a finger of one hand holding the outer tubular body to allow the sleeve to be slid over the needle under the bias of the spring. The cantilevered button and stop rides in a groove in the inner diameter of the tubular outer protective body and is captured by a slot which effectively prevents reuse.

The invention relates to parts having a foamed polymeric material attached to a fabric, and systems and methods for forming same. An example method of attaching foamed polymeric material to a fabric layer includes providing a mold having at least one cavity and at least one material injection channel in fluid communication with the cavity, disposing a fabric over the at least one cavity, closing the mold, injecting unfoamed polymeric material into the at least one cavity through the material injection channel, wherein the unfoamed polymeric material penetrates at least a portion of the fabric proximate the at least one cavity to attach the polymeric material to the fabric layer, and foaming the unfoamed polymeric material.

A composite particle that incorporates a material and is designed to undergo a reaction and/or mechanical or chemical change with the environment to increase in volume. The composite particle can be combined with a constraining matrix to create an expandable particle upon reaction. These particles can be used in stimulating wells, including oil and gas reservoirs.

In intervertebral operative spinal procedures, using separate or pre-attached spreader blocks to control the directional growth of a distracting balloon.

Pultruded panels having a first longitudinal edge profile and a second longitudinal edge profile may be used to form a floor assembly mounted on a railway car underframe. The pultruded panels may also be used to form walkways, bridges, piers and other structures. A bead may be placed on at least one of the longitudinal edge profiles to form a gap between an adjacent pultruded panel. An adhesive may be placed within the gap to couple or bond adjacent pultruded panels with each other. Void spaces may be formed within the pultruded panel and filled with foam to provide improved resistance to heat transfer through the respective panel. Respective coverings may be placed on opposite ends of each panel to block access to the associated void spaces.

A spring force assembly for biasing a displaceable stopper of a liquid medicament cartridge including a spring element arranged along a longitudinal axis, with brace elements and coupling elements, with the coupling elements restricting the distance between the brace elements which also restricts the possible expansion of the spring element.

A retaining ring arrangement is provided for axially holding a component on a rotating component of a gas turbine engine. The retaining ring arrangement comprises a split retaining ring mounted in a circumferential groove defined in a radially outer surface of the rotating component. The inner diameter of the retaining ring is biased inwardly in radial contact with a radially outer facing seat provided on one of the two components to be assembled. An anti-rotation feature is provided at the inner diameter of the retaining ring for restraining the ring against rotation. A sleeve surrounds the retaining ring to limit radial expansion thereof when subject to centrifugal forces during engine operation.

A device for treating obesity comprises a band part (1), which can be placed annularly about the stomach and includes a closure means (2, 3) for closing the gastric band after it has been placed annularly about the stomach, and an enveloping part (18) for enveloping and supporting a stomach region proximal with respect to the applied band part (1). The band part (1) and the enveloping part (18), secured in position on the band part (1) and laterally projecting from it, are implemented as a unit prefabricated by the manufacturer.

Provided is a wall-flow filter coated with an SCR catalyst composition, wherein the catalyst composition contains transition metal promoted molecular sieve crystals, and wherein (i) the crystals have a mean crystalline size of about 0.5 μm to about 15 μm, (ii) the crystals are present in said composition as individual crystals, agglomerations having a mean particle size of less than about 15 μm, or a combination of said individual crystals and said agglomerations; and (iii) said molecular sieve is an aluminosilicate or a silico-aluminophosphate of a Framework Type having a maximum ring size of eight tetrahedral atoms.

A tampon applicator is described which comprises an ejector tube and an outer tube. The outer tube is dimensioned to fit closely and telescopically over the ejector tube. The outer tube has a distal discharge end. The distal end of the ejector tube is formed with one or more radially inwardly slanted fingers. The outer tube can comprise supporting means configured to restrict radially outward expansion of the fingers of the ejector tube when the tampon applicator is in telescopically compacted position.

Systems and methods for robotic and exoskeleton hands are provided. An exoskeleton hand can include a flexible actuator having a cavity and a reinforcement band. The cavity can be filled with a fluid from a pressure source, forcing the actuator to deform, bend or extend. The fluid that fills the cavity as a driving force can be a gas or liquid, which can be recyclable or disposable.

A video on demand system includes a head-end coupled through a proxy server to plural client terminals. The proxy server performs (or cooperates with another component in performing) various functions, including user interface definition, security, system administration (e.g. channel management, load distribution, and failover), and protocol translation.