77results about How to "Eliminate dead space" patented technology

A closed system, spikeless, positive-flow valve device includes a body defining an internal cavity. At the proximal end of the body is an opening which is preferably sufficiently large to receive an ANSI standard tip of a medical implement. The valve includes a plastic, resilient silicon seal which fills the upper cavity and opening with an oval seal cap having a slit. The opening presses the oval seal cap to keep the slit closed in the decompressed state. The slit opens as the nose of the medical implement compresses the seal into the cavity and the seal cap is free from the opening. The housing also includes a fluid space which facilitates fluid flow between the medical implement and a catheter tip. The fluid space within the valve automatically and reversibly increases upon insertion of the medical implement into the cavity and decreases upon withdrawal of the medical implement, such that a positive flow from the valve toward the catheter tip is effected upon withdrawal of the medical implement, thereby preventing a flow of blood from a patient into the catheter when the medical implement is removed from the valve.

A system for delivery of therapeutic and/or diagnostic agents into a living body includes a port assembly having a cannula extending from the mounting side, a port opening away from the mounting side and a resilient barrier between the port and the cannula. An access hub includes a connector positionable at the port for opening the resilient barrier. The access hub is movable in the port assembly, is engaged therewith through a resilient ring coupling and forms a seal with the resilient barrier, reducing the amount of volume to be primed. Inserters, both disposable and reusable, include the cannula insertion member as part of the assembly. A spring loaded port driver is operatively mounted within the housing with movement controlled by a latch. The driver includes a seat for receipt of a port assembly. The cannula insertion member is nonremovably fixed in a socket in the port driver in the disposable assembly. In the reusable inserter, the cannula insertion member is slidably mounted within a socket associated with the latch. Slidable movement is limited by locking shoulders. The socket is split and may be splayed to release the cannula insertion member following use.

A squeezer can be used to produce a pulp contained juice instead of the conventional squeezer only provided juice. The squeezer comprises a motor base, a rotary disk, a bowl, a cutter disk, a mask, an upper lid and a feed tube passed through a receiving opening of the upper lid. In which, a circular lid is introduced between the bottom end of a receiving opening and the cutter disk. The cutter disk has a ring type press plate relative to the cutter disk in an up and down relationship. A gap kept between the ring type plate and the cutter disk allows shredded fruits to be macerated to form pulp contained juice and then drained out. The mask is composed of a support frame and a watertight base. Because the mask has no meshes, the pulp contained juice can be led into the bowl.

A monolith column for chromatography comprising a monolith rod encased with a tubular structure wherein the mass of the interior surface layer of said tubular structure intercalate by an encasing process into the surface layer of said monolith rod through the micro-cavities of said surface layer of said monolith rod, forming a hybrid layer shared by both said monolith rod and said tubular structure.

A surgical stapler having a tissue spacer at its forward end. The spacer is inserted between lateral sides of a wound to be closed and holds the tissue on lateral sides of the wound apart while the tines of a staple are driven into the tissue margins and bent around the staple bending surface of the staple anvil to draw the tissue captured between the tines toward each other. The tissue spacer has a width greater than the width of the staple bending surface of the anvil and less than the distance between the tines of the staple in an unbent condition such that when inserted between lateral sides of the wound it will space the facing tissue margins of the wound apart a distance sufficient to provide a metered amount of tissue lateral sides of the wound that will be captured between the tines and drawn together as the tines are bent toward each other to close the wound without crushing or overlapping of the captured tissue.

A snorkel has an inhalation tube and a check valve near a mouthpiece which allows air to flow toward the mouthpiece, and a float valve which closes the inhalation tube. An exhalation tube has a second check valve also located near the mouthpiece which only allows air to flow into the exhalation tube. The snorkel has a purge valve positioned below the mouthpiece. A further check valve is positioned between the inhalation tube and the exhalation tube to allow air or water in the exhalation tube to pass to the inhalation tube placed as close to the first check valve as possible. The exhalation tube outlet orifice may be closed by a simple gravity actuated valve which will float open during a dive. Alternatively the exhalation tube outlet orifice may be closed by a float valve.

The invention provides a blocking type intravenous infusion catheter device which comprises a rigid needle tube, a needle tube base, a flexible infusion catheter and an infusion catheter base, whereinthe rigid needle tube is used for piercing skin and vein walls; the bottom end of the needle tube is fixed in the needle tube base; the infusion catheter base is hermetically connected with the bottom end of the infusion catheter; the front end of the needle tube penetrates through a sealing plug and is positioned in the inner cavity of the infusion catheter; and the tip of the needle tube is exposed from an opening in the top end of the infusion catheter. The blocking type intravenous infusion catheter device is characterized by also comprising a movable blocking component which is externally isolated, at least the blocking part of the blocking component can enter the inner cavity of the infusion catheter through the inner cavity of the infusion catheter base under the driving of the external force, and the blocking part of the blocking component can move to the opening in the top end of the infusion catheter along the inner cavity of the infusion catheter and block the opening so asto prevent the blood from entering the inner cavity of the infusion catheter and simultaneously prevent the liquid medicine from entering veins.

The invention provides a display device including: a first electrode and a second electrode which are disposed in different directions from each other on a flexible substrate; an optical functional layer disposed between the first and second electrodes; and a display unit having a display pixel formed at a rectangular area of overlap between the first and second electrodes in the direction of lamination of the electrodes, in which the first and second electrodes are respectively connected to a first flexible wiring member at a first region of a periphery of the flexible substrate and a second flexible wiring member at a second region adjacent to the first region, one of the first and second flexible wiring members is adhered onto the display unit, and a first connection portion and a second connection portion for connecting the flexible wiring members with external drive units are disposed at the same region on the periphery of the flexible substrate.

An agitator 1 has a vessel 4 provided between an upper powder/particulate material supplier 2 and a lower powder/particulate material discharger 3 to hold therein powder/particulate material to be stirred. The agitator 1 also has a stirrer 7 provided in the vessel 4 to have a stirrer rotating shaft 5 arranged in a horizontal direction and main paddles 6 fastened to the rotating shaft 5, and a multi-feeder 8 provided in the powder/particulate material discharger 3 to have both forward rotation and reverse rotation. The multi-feeder 8 has a discharger rotating shaft 81 and small-size auxiliary paddles 9 integrally rotated with the rotating shaft 81 and designed to be smaller in size than the main paddles 6. In the state of stirring the powder/particulate material in the vessel 4 by means of the stirrer 7, the agitator 1 has stirring assist function during reverse rotation of the multi-feeder 8 to cause the auxiliary paddles 9 to stir up the powder/particulate material in the powder/particulate material discharger 3 and feed the powder/particulate material back into the vessel 4. The agitator 1 also has discharge function during forward rotation of the multi-feeder 8 to discharge the powder/particulate material out of the powder/particulate material discharger 3 and the vessel 4. This arrangement effectively prevents the powder/particulate material from being accumulated in any dead space, while reducing the total height of the powder/particulate material discharger of the agitator.

A method of manufacturing a semiconductor device, including the following steps, forming a resin layer on a surface of a semiconductor chip, the surface is provided with a bump formed thereon, the resin layer having photosensitivity and adhesiveness, exposing an upper surface of the bump by removing a part of the resin layer right above the bump by exposing and then developing the resin layer, and bonding the semiconductor chip provided with a resin film formed of the resin layer face-down to a substrate, the bump of the semiconductor chip and a conductive section of the substrate being electrically connected by the resin film functioning as an adhesive.

A continuous static polymerization reactor unit for the production of liquid polymers, in particular high viscosity organopolysiloxanes, in a predetermined viscosity range comprises a reactor (1) a supply means (10,25) for supplying monomers and/or oligomers to an inlet means (2), and an outlet means (5). The inlet means (2) is adapted for the introduction of a reaction mixture into a reaction chamber (3), and a means for introducing at least one viscosity controlling agent into the supply means is provided to form a reaction mixture with monomers and/or oligomers (11,13,15,12,14,16). The unit is adapted to maintain the values of temperature and flow rate of the resulting reaction mixture/polymer in the reaction chamber (3) substantially constant. A control means (24) is used to detect any variation from a predetermined pressure drop value between the inlet means (2) and the outlet means (5), and should such a variation occur the control means (24) is also used to compute and control a compensating rate of introduction of one or more of the at least one viscosity controlling agents to cause the pressure drop between the inlet means (2) and the outlet means (5) to revert to the predetermined value. A process for making liquid polymers within a predetermined viscosity range is also disclosed.

An object of the present invention is to construct a culture device optimized for culturing animal cells. The present invention provides a device for culturing cells which comprises at least one water-containing polymer gel film for adhering animal cells onto at least one surface of the film, and has a structure capable of supplying different liquids to both sides of the film.