1367results about How to "Promote withdrawal" patented technology

An endoluminal filter including a first support member having a first end and a second end and a second support member attached to the first end of the first support member or the second end of the first support member and forming a crossover with the first support member. The endoluminal filter also includes a material capture structure extending between the first and second support members, the crossover and the first end or the second end of the first support member and at least one tissue anchor on the first support member or the second support member. A method of positioning a filter within a lumen including advancing a sheath containing a filter through the lumen. Next, deploying a portion of the filter from the sheath into the lumen to engage the lumen wall while maintaining substantially all of a material capture structure of the filter within the sheath. Next, deploying the material capture structure of the filter from the sheath to a position across the lumen.

In certain embodiments, a vial adaptor comprises a housing member, a connector configured to couple the adaptor with a vial, and an extractor channel formed in the housing member. The extractor channel is configured to facilitate withdrawal of fluid from the vial when the adaptor is coupled to the vial. In some embodiments, an anti-reflux valve is positioned within the extractor channel. The anti-reflux valve can be configured to impede or obstruct fluid returning to a fluid source after withdrawal of the fluid from the fluid source.

A method of using a balloon catheter to perform a medical procedure at a treatment site in a patient's body lumen and to recover an expanded device, such as an embolic protection device, which is adjacent to the treatment site in the body lumen. The inflated balloon is deflated and regroomed to a low profile configuration in the body lumen, and the balloon catheter is advanced distally from the treatment site to collapse the expanded device (e.g., embolic protection filter) within the balloon catheter. The balloon catheter has a recovery distal tip for collapsing an expanded device, and has a regrooming sheath member configured to slidably receive the deflated balloon therein to regroom the balloon.

The invention relates to aqueous polyurethane superfine fiber synthetic leather and a preparation method thereof. The preparation method comprises the following steps of: firstly, adding the following components according to parts by weight, i.e. 2-5 parts of foaming agents, 50-200 parts of water, 2-3 parts of foam stabilizers and 0-3 parts of waterborne colorants, into 100 parts of aqueous anionic polyurethane dipping sizing agents, and stirring the components and the sizing agents uniformly at high speed by using a blender so as to prepare a sizing agent; secondly, dipping non-woven fabricsin the sizing agent, scrapping the surface of the fabrics and keeping partial cells; thirdly, solidifying aqueous polyurethane on the dipped non-woven fabrics through aqueous coagulating liquid so asto form cells; fourthly, carrying out water scrubbing after aqueous polyurethane resin is completely solidified, and drying the aqueous polyurethane resin by an infrared drying oven so as to obtain base cloth; fifthly, treating the dried base cloth through an alkali reducing process; sixthly, treating the base cloth treated through the alkali reducing process through an postprocessing process; and seventhly, preparing the obtained base cloth into the synthetic leather. The aqueous polyurethane superfine fiber synthetic leather is prepared by the method.

A catheter having an elongate drainage tube with a proximal end and a distal end, is adapted to extend through a body conduit and into a body cavity. An anchor disposed the distal end of the tube is disposed in the body cavity and is adapted to be moved from an insertion position to a withdrawal position. The anchor in the insertion position has a low profile when the tube is moved distally and in the withdrawal position has a low profile when the tube is moved proximally. The first end of the anchor is attached to the tube, and a tension member is provided to extend distally of the tube to releasably hold the second end of the anchor in a fixed relationship with the tube. In an associated method, this tension member is severed to release the second end of the anchor from the tube and permit withdrawal of the tube and the anchor in a low-profile state.

A diaphragm valve module is mounted in the lower end of the outer housing of a pop-up rotor type sprinkler for controlling the flow of water through an inlet in response to actuation of a valve actuator component. A resilient deformable semi-circular snap ring is mounted on top of the module and has a pair of opposing peripheral annular portions. Upon removal of the sprinkler riser, the snap ring can be disengaged from an annular groove formed in the interior wall of the outer housing by manually squeezing the annular portions together. This permits removal of the module for repair or replacement. The annular portions of the snap ring are formed with angled slots that receive projections that extend from the cover of the module to produce a camming movement that uniformly retracts the snap ring out of the annular groove to more readily permit removal of the module.

The invention discloses an oil sludge cleaning and processing system for an oil tank. The oil sludge cleaning and processing system comprises a cleaning system, an oil sludge processing system and an integrated control system, wherein the cleaning system comprises a cleaning robot, an electric hydraulic pump, a water pump, an inert gas storage tank and a screw pump; the cleaning robot comprises a machine body, a traveling unit, a cleaning unit, a robot cleaning control unit, a sensing and communication unit and a robot power supply unit; the oil sludge processing system comprises an oil sludge processing device, an oil sludge processing control system and an oil sludge processing power supply device; the oil sludge processing device comprises a stirring machine, an ultrasonic emulsion breaking device, a centrifuge and an ultrafiltration system, as well as an oil sludge storage pool, a sludge pool, a centrifugal liquid storage tank, a concentration tank and a filtrate pool; a funnel is arranged on the stirring machine; and the integrated control system comprises an integrated control computer and a communication circuit module. The oil sludge cleaning and processing system disclosed by the invention has the advantages of reasonable design and high degree of intelligentization, and can realize comprehensive cleaning of the oil tank, good safety, fast oil sludge processing speed and resource utilization of oil sludge, and further reduce environmental pollution and waste of resources.

In certain embodiments, a vial adaptor comprises a housing member, a connector configured to couple the adaptor with a vial, a regulator channel, and an extractor channel formed in the housing member. The extractor channel is configured to facilitate withdrawal of fluid from the vial when the adaptor is coupled to the vial. The regulator channel is configured to facilitate flow of a regulating fluid to compensate for changes in volume of a medical fluid in the vial. In some embodiments, an expansion member is disposed on the housing member and is configured to expand and contract in accordance with changes in the volume of a medical fluid in the vial.

In certain embodiments, a vial adaptor comprises a housing configured to couple the adaptor with a vial, an access channel, a regulator channel, and a regulator assembly. The access channel is configured to facilitate withdrawal of fluid from the vial when the adaptor is coupled to the vial. The regulator channel is configured to facilitate a flow of a regulating fluid from the regulator assembly to compensate for changes in volume of a medical fluid in the vial. The regulator assembly can include a valve configured to transition between a closed configuration and an opened configuration.

Apparatus for sealing a vascular wall penetration disposed at the end of the tissue tract comprises a shaft, an optional occlusion element, a hydratable hemostatic implant, and a protective sleeve. The apparatus is deployed through the tissue tract with the occlusion element optionally occluding the vascular wall penetration and inhibiting backbleeding therethrough. The hydratable hemostatic implant, which will typically be a biodegradable polymer such as collagen carrying an anti-proliferative agent or coagulation promoter, will then be deployed from the sealing apparatus by retracting the protective sleeve and left in place to enhance closure of the vascular wall penetration with minimum scarring. The hydratable implant will be protected from premature hydration and swelling by a soluble plug covering the implant's distal end prior to sleeve retraction.

The invention relates to a draw-out automatic changeover switch provided with a shunt circuit. Prior automatic switchover switch needs repair and replacement during changeover, therefore, the operation is very inconvenient. The invention comprises a main-body switch, rollers, guide rails, locating pins, a shunt-circuit frame and a power supply connecting terminal A, a power supply connecting terminal B, a load connecting terminal, a shunt-circuit contact self-locking mechanism, a shunt-circuit moving contact, a shunt-circuit static contact, a shunt-circuit draw-out interlocking mechanism fixed on the frame. The switch mainly has the functions of draw-out and shunt circuit. When the main-body switch needs repair or replacement, the shunt circuit is switched on, the power is supplied to the load by a normal power supply, the main-body switch is drawn out to be repaired or replaced outside the power supply circuit; after repair, the main-body is pushed into the frame, the shunt-circuit switch is switched off, and the switch main-body is integrated into the system for continuous operation. Such process does not influence normal power supply to the load, and the repair and replacement become more convenient and rapid.

In certain embodiments, a vial adaptor comprises a housing configured to couple the adaptor with a vial, an access channel, a regulator channel, and a regulator assembly. The access channel is configured to facilitate withdrawal of fluid from the vial when the adaptor is coupled to the vial. The regulator channel is configured to facilitate a flow of a regulating fluid from the regulator assembly to compensate for changes in volume of a medical fluid in the vial. In some embodiments, the regulator assembly includes a flexible member configured to expand and contract in accordance with changes in the volume of the medical fluid in the vial. In some embodiments, the flexible member is substantially free to expand and contract. In some embodiments, the flexible member is not partly or completely located in a rigid enclosure.

A flow-directed catheter guide includes a selectively deployable flow-directed member and a variable rigidity shaft. The variable rigidity shaft can be selectively changed between a flexible state and a rigid state. The flow-directed member can be deployed to direct the distal end of the catheter guide downstream following the blood flow in the vessel.

The invention discloses a method for constructing a beam plate supporting system having a post-cast strip. The method comprises the following steps: 1) setting up an upright rod and a horizontal rod and forming a supporting bracket, wherein the supporting bracket at the position of the post-cast strip is an independent system, 2) laying a longitudinal secondary keel on the supporting brackets at two sides of the post-cast strip and laying a lateral secondary keel on the supporting bracket at the position of the post-cast strip, and 3) arranging a template at the position of the post-cast strip on the lateral secondary keel, arranging the templates at two sides of the post-cast strip on the longitudinal secondary keel, tightly butt jointing the template at the position of the post-cast strip with the adjacent templates at two sides, and arranging the longitudinal secondary keel under the joint. The post-cast strip of the invention adopts the independent supporting system. After the brackets are arranged, no reconstruction is needed, so the reconstruction for the brackets is avoided and the human labor and materials are saved. The independent supporting system is maintained at the position of the post-cast strip all the time so as to ensure the safety of the post-cast strip.

A robot cleaner that has a dust collection unit with a cyclone part generating an ascending rotary air current from the dust-laden air being drawn in through a lower part thereof, separating the dust from the air using a centrifugal force, and discharging the dust-separated air to the lower part through a center part, and a collection part surrounding the cyclone part to receive the dust being centrifugally separated.

A solid preparation without cane sugar for moistening throat contains isomaltone alditol as shaping material and boat sterculia seed.

A coreless roll of paper is formed by winding a web of paper around an elongated mandrel to form a roll of convolutely wound paper. The mandrel is formed from flexible and elastic material, and after the roll is wound, the mandrel is pulled longitudinally and withdrawn from the roll of paper to form a coreless roll.

Alternatively, the mandrel can be pressurized to expand the mandrel radially before or during the winding of the web around the mandrel. After the roll is wound, the pressure in the mandrel is relieved so that the mandrel contracts radially, and the mandrel is withdrawn from the roll.

A novel clasp is used to grasp and extract a tubular mandrel from the roll. The clasp includes a rigid shaft which is adapted to be inserted into a tubular mandrel. A plurality of clamping blocks are spaced radially outwardly from the shaft and are spaced circumferentially around the shaft. A plurality of actuators are engageable with the clamping blocks to move the clamping blocks radially inwardly toward the shaft whereby a mandrel can be clamped between the clamping blocks and the shaft.

The invention provides a vertebra support distance measuring device, which includes a probe rod and a resistance wire; the probe rod includes a rod body and a probe; the rod body is made of insulating material; the resistance wire and the probe are separated by the rod body; the probe rod includes a first The probe rod and the second probe rod; the resistance wire is passed between the first probe rod and the second probe rod. The invention adopts the principle of a sliding rheostat to measure the distance between the vertebra supports, and simultaneously uses an electronic display screen to directly read the distance value, which is simple and convenient.

The broach assembly includes alternate spacers and cutters arranged in a sub-assembly having a lead at a leading end and a lag at a trailing end. The cutters have side margins in excess of the margins of the spacers for cutting material from the dovetail slots of the turbine wheel as the broach assembly passes through the slots. The bottom or apices of each spacer and cutter are tapered to form a continuously tapered surface along the bottom of the broach assembly. Upon passing the broach assembly through the slot, the assembly is progressively displaced in a radial outward direction to progressively cut the active dovetail slot surfaces. Shims may be disposed in the bottom of the slot to further displace the broach assembly radially outwardly in multiple passes.