Abstract: Medical devices, such as stents, including a fibrous layer including particles are disclosed. Methods of forming such medical devices using electrospinning are disclosed.

Abstract: An extrusion apparatus for extruding multiple streams of extrusion material as extruded end-products and in the coating of substrates. A flow joiner in an extrusion head combines multiple metered streams such as from a gear pump, into a uniform extrusion flow.

Abstract: Multitube catheter and method for making the same are provided. The assembly includes two or more tube fused together to form one catheter tube shaft. Each tube has at least one lumen extending longitudinally through the catheter from its distal end to its proximal end. The tubes are fused together by use of heat & pressure. Heat and pressure can be generated by heat sensitive tube slides over a segment of catheter tubes while metallic mandrels are passed through each tube lumen to protect the lumens during fusion. The heat sensitive tube will shrink once heat is applied. The heat sensitive tube will shrink and apply the required pressure over the catheter tubes. Continual heating will melt and re-shape the catheter tubes inside the heat sensitive tube while the letter will not be affected due to its high melting temperature. After cooling, the heat sensitive tube is to be removed, the metallic mandrels are pulled back and the tubes forming the united catheter tube.

Abstract: There is provided a tubular support comprising a first composite layer of resin and longitudinal arranged fibers (66, 98) having on each of its opposite major sides a further composite layer (64, 70) comprising resin, transverse fibers at an angle of between 10 and 80° relative to the longitudinal axis of said tubular support and traverse fibers at an angle of between ?10 and ?80° relative to the longitudinal axis of said tubular support. The method for producing this tubular support is also disclosed.

Abstract: Disclosed herein are an apparatus and method for manufacturing a balloon catheter in which a non-contact type laser perforator and printer are separately provided above a primary extruder such that inflation apertures can be uniformly perforated through a non-vulcanized lumen tube and simultaneously, tube cutting positions can be printed on the lumen tube at positions uniformly spaced apart from the inflation apertures without stopping a primary extrusion process. Also, a bond preventing agent layer is coated on the lumen tube at balloon inflating portions prior to cutting the tube, to facilitate a secondary extrusion of the tube. With this configuration, continuous and accurate perforation of inflation apertures is possible and automatic tube cutting can be achieved based on the printed tube cutting positions. Also, the present invention can compensate for a time delay due to a bond preventing agent application process and achieve high productivity and minimized loss of material.

Abstract: A pipette includes a tubular body having an internal passage, a first end and a second end. The tubular body is deformed inward to create a narrow constriction or slit within the internal passage of the pipette. When vacuum is applied to the pipette and a solution is drawn into the pipette, the slit increases the velocity of the solution while gently deforming and separating clumps of matter (e.g., colonies of bacteria) contained in the solution. As the deformed bacterial colony passes through the slit, the bacteria solution is mixed due to turbulent flow within the pipette created by the increase in velocity. Bacteria colony size is further reduced by alternating the pipette flow direction to cycle the bacteria through the slit two or more times. A sloped entrance to the slit also prevents the oily bacteria from clogging the slit during cycle reversals.

Abstract: An object of the present invention is to provide a process for producing a mixture of a two-liquid mixing type curable resin, which process is hard to generate curing unevenness, can be carried out with low energy consumption, and is suited for mixing even with a disposable static mixer. The present invention provides a process for producing a mixture of a two-liquid mixing type curable resin by mixing the constituents of the resin, wherein mixing operations of the constituents are performed multiple times and a non-mixing time is provided between at least one of the mixing operations and another one of the mixing operations subsequent thereto.

Abstract: A method of manufacturing a cured, non-reinforced hose exhibiting one or more desirable configuration features molded onto the outer surface of the hose; and a cured, non-reinforced hose exhibiting such desirable configuration features molded on the outer surface thereof, manufactured in accordance with such method are described.

Abstract: A filter element includes a first, outer tubular construction of filter media defining a first open filter interior; a second, inner tuber construction of filter media defining a second open filter interior; the second construction of filter media being located within the first open filter interior and being radially spaced from the first construction of filter media; and the second open filter interior defines an unfiltered fluid channel. A plastic inner liner is within the first open filter interior to support the first construction of filter media. A plastic outer liner is within the first open filter interior to support the second construction of filter media. A filtered fluid channel is defined between the inner liner and the outer liner. A brace arrangement is between the first and second tubular constructions. The brace arrangement can include a spring, a plurality of gussets, or a solid spacer.

Abstract: The invention relates to a fiber-reinforced plastic drilling anchor comprising an axial bore that runs along the entire length thereof, fibers which extend in the longitudinal direction thereof, and fibers that extend at an angle to the longitudinal direction thereof. A first layer of fibers that extend at an angle to the longitudinal direction of the drilling anchor is surrounded by a second layer of fibers extending in the longitudinal direction of the drilling anchor, and the second layer of fibers is surrounded by a third layer of fibers extending at an angle to the longitudinal direction of the drilling anchor. The inventive drilling anchor further comprises a thread which extends along the entire length thereof and is molded into at least one outer fiber layer of the drilling anchor. The invention also relates to a method for producing such a drilling anchor.

Abstract: A process of manufacturing core-sheath composite fiber includes the steps of: preparing hollow fiber in a form of filament of which some parts forms communicating pores from an outer surface of the fiber to a hollow portion thereof, or in a form of filament segment with open ends; sealing adjacent porous parts or open ends of the same filament respectively in pressure containers and vacuum containers; adding filling materials into pressure containers, and keeping the porous parts or open ends completely immersed in the filling materials; pressurizing the pressure containers using compressed gas, and evacuating the vacuum containers, then the filling materials being absorbed through the communicating pores or opens into the hollow portion of the fiber. During the process of the present invention to manufacture core-sheath composite fiber, most areas of outer surface of the fiber do not contact the filling materials, thus most areas of the outer surface is clean, which is advantageous for post treating or use.

Abstract: The invention concerns a process for the production of hollow bodies of thermoplastic material. In the process according to the invention preforms in web or band form of plasticized material are shaped in a multi-part tool forming a mold cavity comprising two outer molds and at least one central mold which perform an opening and closing movement relative to each other. The central mold is provided with at least one component holder which can be moved of and into the tool plane defined by the central mold. In a first step the component holder is fitted with at least one insert portion, then the insert portion is placed by means of the component holder against the inside wall of an outer mold.

Abstract: A prosthetic medical device exhibiting improved wear resistance is fabricated by sealing at least one polyolefinic material in an airtight container and providing an inert atmosphere within the airtight container. The polyolefinic material is exposed to an irradiation source to yield a cross-linked irradiated polyolefinic material. At least one non-irradiated polyolefinic material is blended with the irradiated polyolefinic material, and the prosthetic medical device is formed from the blended material. Selectively cross-linked polymeric compositions may be created by blending a specific amount of cross-linked resins with a specific amount of uncross-linked resins then cured into a polymeric matrix whereby the desired degree or percentage of overall cross-linking is obtained. The polymeric material may then be formed directly into a finished article by injection molding the polymeric material.

Abstract: A thin walled microtube is formed by providing a continuous elongated member having an outer surface. The member is at least partially formed of a water soluble material. A coating material is provided. The coating material may be a silicone compound that is curable such that the coating material cures into a substantial non-porous silicone. The outer surface of the elongated member is coated with a coating material so as to form a substantially uniform and continuous layer of coating material on the outer surface. The layer of coating material is cured so as to form a substantial uniform and continuous layer of substantially non-porous silicone on the outer surface. The elongated member is at least partially dissolved using water and purged from the silicone layer, such that an elongated tube of substantially non-porous silicone is formed.

Abstract: A rubber hose having a multilayer wall is formed of an inner layer of NBR type rubber having a high AN content, available at a low cost and highly impermeable to fuel and an outer layer of a rubber composition having a minimum Mooney viscosity of 25 to 65 at its curing temperature and highly resistant to flattening. Those layers are extruded and cured together without the aid of any mandrel owing to the inside diameter and wall thickness of the hose and the thickness of the outer layer which fall within specific ranges. This process enables the manufacture of a fuel hose having a high fuel impermeability at a low cost, while protecting its inner wall effectively from flattening during curing.

Abstract: An improved hose is used to install loose fill insulation. The hose includes projections extending from an inner surface which serve to condition the insulation as it proceeds through the hose and is dispensed. In a first embodiment of the present invention, the projections are formed so as to be perpendicular to a longitudinal axis of the hose. In a second embodiment of the present invention, the projections are formed so as to be angled, by an angle less then ninety (90) degrees with respect to the longitudinal axis of the hose. In a third embodiment of the present invention, the projections are formed with a serrated edge. In a fourth embodiment of the present invention, the projections are formed as part of a cap member which is disposed around the periphery of the hose.

Abstract: An adhesive tape (24), a sealing element and a process for producing the sealing element, preferably in motor vehicles. The sealing body is made of silicone, and a first self-sticking adhesive surface (18), which has at least in part a silicone cement, of an adhesive tape (24) is applied to the sealing body. The adhesive tape (24) is provided with a second self-sticking adhesive surface (20) for attachment to the application site. There is an adhesive layer (32) between the carrier element (14) of the adhesive tape (24) and the silicone cement of the first adhesive surface (18).

Abstract: The present invention provides systems and methods for reducing intraocular pressure, thereby to treat glaucoma and other disorders. The systems of the present invention include a shunt insertable across the clear cornea and a delivery device for inserting the shunt in the transcorneal position. The shunt has a body with a head at one end and a foot at the opposite end, and a channel therethrough permitting the passage of aqueous humor from the anterior chamber to the external surface of the cornea. A removable filter is positioned within the channel to regulate aqueous humor outflow and to resist the incursion of microorganisms.

Abstract: A high throughput, automated process for coating ceramic monoliths used as catalytic converters that overcomes problems with coating monoliths individually in a mold. The monoliths are provided with end caps to cover the open functional ends, then loaded serially into an inlet channel leading to an extrusion chamber. As each monolith is pushed into the channel, one monolith enters the extrusion chamber, and the monolith just coated in the extrusion chamber is made to exit onto a finished part conveyor. Thereafter, the end caps are removed and cleaned for reuse on new monoliths yet to be coated.

Abstract: A method is intended for the thermal insulation of a flexible pipe. The method includes a first step of depositing a thickness of extrudable and rigid insulating material on an outer surface of the pipe, with the pipe moving longitudinally. The insulating material is cooled over a substantially rectilinear part downstream from the deposition area. Then, at least one circumferential slot is formed in the thickness of the rigid insulating material so as to restore flexibility of the pipe coated with the rigid insulating material. The thus-formed pipe includes a flexible inner pipe, a layer of rigid insulating material surrounding the flexible pipe, and at least one circumferential slot cut in the layer of rigid insulating material to allow flex of the heated insulated pipe.

Abstract: A pipe has a barrier layer of metal foil between an inner core and an outer cover each bonded to the barrier layer by a tie layer formed integrally with the core and cover. The tie layer of the core is activated by heating prior to applying the barrier layer and bonding may be enhanced by applying a thin layer of the tie layer material to the heat activated tie layer.

Abstract: A coated metal tubing arrangement having a metal tube, a first layer of a first polymeric material and a second layer of a second polymeric material having a foamed structure. The second layer is located directly radially outwardly of the first layer. The second polymeric material is chemically similar to the first polymeric material.

Abstract: An embossment for a plastic panel is provided. The embossment projects out from the panel and can secure the panel to an object or support the panel away from the object as a standoff. A plurality of support legs are integrally formed to both the embossment and the panel which separates the embossment from the panel and provides stability to the embossment. While attaching the embossment to the vehicle, such as by rotationally inserting a screw, the support legs prevent the embossment from rotating and/or disconnecting from the panel. In this manner, the panel is maintained in a proper location during installation. The support legs have a reduced contact area with the panel such that abnormalities on the show surface that would be created by the embossment are eliminated.

Abstract: There are provided a pole coating method and a pole fabricated by the same. The pole coating method injects at least one plastics selected from polyester, nylon, PVC(polyvinyl chloride), polyethylene, polypropylene, CAB(cellulose acetate butyrate) or ABS(acrylonitrile butadiene sthylene) to coat an FRP(Fiber Reinforced Plastics) pipe that is made in a manner that a glass fiber or carbon fiber (referred to as “glass fiber” hereinafter) is dipped in an unsaturated polyester resin to be drawing-molded. The pole is fabricated by the method of injecting at least one plastics selected from polyester, nylon, PVC(polyvinyl chloride), polyethylene, polypropylene, CAB(cellulose acetate butyrate) or ABS(acrylonitrile butadiene sthylene) to coat an FRP(Fiber Reinforced Plastics) pipe that is made in a manner that a glass fiber is dipped in an unsaturated polyester resin to be drawing-molded.

Abstract: An extrusion-coated metal article is prepared by applying a mixture which comprises an organosilane composition to a metal surface, and then extruding a melt of a polyamide molding composition onto the coated surface thus treated and dried.

Abstract: A hose of impermeability has a wall corrugated along at least a part of its length, and formed by an inner thin resin layer, a laminated layer including a metal film, or a layer formed by a metal film, and an outer thin resin layer. It has a very high fluid impermeability owing to its wall layer including or formed by a metal film, and is also very flexible, capable of absorbing vibration, light in weight and strong. A tubular inner thin resin layer is formed by extrusion as the innermost layer of a multi-layered hose wall, and a laminated tape including a metal film, or simply a metal film is spirally wound or longitudinally lapped about the inner resin layer. An outer thin resin layer is formed about a layer formed by the laminated tape, or metal film, and the whole is at least partly corrugated. Alternatively, corrugation is done before an outer thin resin layer is formed by electrostatic powder coating.

Abstract: The invention provides a system of electromagnetic parts which form an electromagnetically shielded channel system for electric cables. Tubular parts are provided of a single piece structure, which are extruded from plastic materials and have several layers, including an inner layer of electrically insulating plastic material. There is at least one outer layer of electrically conductive material.

Abstract: A method of making a disposable tubular device comprising extruding a first material through a first die to form the tube and moving the tube through the second die while extruding a second material through the second die to form the tube-support structure. The second material has a surface hardness which is greater than the surface hardness of the first material.

Abstract: A thin walled microtube is formed by providing a continuous elongated member having an outer surface. The member is at least partially formed of a water soluble material. A coating material is provided. The coating material may be a silicone compound that is curable such that the coating material cures into a substantial non-porous silicone. The outer surface of the elongated member is coated with a coating material so as to form a substantially uniform and continuous layer of coating material on the outer surface. The layer of coating material is cured so as to form a substantial uniform and continuous layer of substantially non-porous silicone on the outer surface. The elongated member is at least partially dissolved using water and purged from the silicone layer, such that an elongated tube of substantially non-porous silicone is formed.