A percutaneous catheter for an extracorporeal blood circulator has a tubular reinforcement body comprised of a plurality of wires braided in a reticulated manner. The braided wires include first wires wound in a first helical direction and second wires wound in a second helical direction crossing the first wires to define regular gap portions. A portion of the first and second wires are deviated from the helical directions to enlarge a selected gap portion into a first opening portion. A resin layer coats the reinforcement body and includes a second opening portion coincident with the first opening portion to form a side hole for fluid communication between an interior lumen and an exterior of the catheter. A continuous reinforcement is provided between longitudinal ends of the tubular reinforcement body including a longitudinal region of the side hole.

Provided is a rolled retraction cord, which has flexibility and is made of a sheet rolled into a non-firm multilayer strip. The sheet has a first side edge and a second side edge, the first side edge and the second side edge are opposite and parallel to each other, and the rolled retraction cord is formed by rolling the first side edge of the sheet toward the second side edge of the sheet. Further provided is a method for manufacturing the rolled retraction cord.

An apparatus for and method of manufacturing an improved wire-reinforced plastic tubing for medical and other applications is disclosed. A plurality of spaced-apart wire segments may be wound onto successive portions of a long segment of plastic tubing which portions are supported for rotation to wind coil wire thereon by rotating the plastic tubing while a supply of coil wire is wound onto the plastic tubing. When multiple winding segments have been wound on the long segment of plastic tubing, the segments may be separated into individual wire-reinforced tubing products each having one or more wire windings thereupon.

An apparatus for and method of manufacturing an improved wire-reinforced plastic tubing for medical and other applications is disclosed. A plurality of spaced-apart wire segments may be wound onto successive portions of a long segment of plastic tubing which portions are supported for rotation to wind coil wire thereon by rotating the plastic tubing while a supply of coil wire is wound onto the plastic tubing. When multiple winding segments have been wound on the long segment of plastic tubing, the segments may be separated into individual wire-reinforced tubing products each having one or more wire windings thereupon.

A tubular wall, which may be employed in a medical catheter or medical electrical lead, is formed by stranding together a plurality of polymer fibers and at least one metal filar, wherein the stranding forms a braid matrix of the polymer fibers and a coil of the metal filar interlaced therewith. Then, while the braid matrix secures a pitch of the coil, a polymer material is extruded around an entire length of the tubular wall, and, in some cases, the extrusion process causes the plurality of polymer fibers to melt and coalesce together with one another, while the pitch of the coil is maintained. Alternately, a reflow process, which follows extrusion, causes the polymer fibers to melt and coalesce along all, or just a discrete length of the tubular wall.

A fillet for a composite panel may be formed by pulling a prepreg slit tape from a spool and winding the slit tape into a fillet mold around the perimeter of a wheel. The tension, heat, and speed may all be adjusted during the winding process. A guide may guide the slit tape to specific locations in the fillet mold. The fillet may be removed from the wheel and coupled to the composite panel and cured.

A fillet for a composite panel may be formed by pulling a prepreg slit tape from a spool and winding the slit tape into a fillet mold around the perimeter of a wheel. The tension, heat, and speed may all be adjusted during the winding process. A guide may guide the slit tape to specific locations in the fillet mold. The fillet may be removed from the wheel and coupled to the composite panel and cured.

A tank for containing a pressurized fluid, including at least one cylindrical element made of a pultruded fibrous material impregnated with a thermoplastic matrix, a first cap placed at one end of at least one cylindrical element closing it, a second cap placed at the other end of at least one cylindrical element, fitted with an orifice intended to make possible the entry and the exit of the fluid, and at least one additional fibrous reinforcement, partially or completely surrounding the cylindrical element(s) and optionally the caps, the fibers contained in the additional fibrous reinforcement being positioned along a different axis from the longitudinal axis of the cylindrical element, the total content of fibers of the tank being of between 40% and 70% by volume, with respect to the volume of the matrix and of the fibers contained in the tank.

The object of the invention relates to membrane housing elements that are constructed from an inner element, a fiber wrapping, and a casing, and to a method for its manufacture. Due to their structure, the membrane housing elements provide a high pressure resistance with respect to both radial and axial loading. The continuous manufacturing method allows the manufacture of a large number of piece numbers with high precision and uniformity. The membrane housing elements are used for membrane housings in the application fields of nanofiltration, ultrafiltration, ion exchange, and reverse osmosis.

A process for manufacturing a non-degumming, seamless and surface-laminated basketball, comprising the steps of: step 1: wrapping the inner bladder by threads, thereby shaping the carcass; step 2: preparing the uncured foamed middle bladder; step 3: preparing the half-finished PU surface-laminated ball; step 4: placing the half-finished leather ball obtained from step 3 into a curing mold; subsequently, curing under low temperature and low pressure via the thermal cross-linking method, thereby forming the cured PU foamed basketball; Step 5: testing the air-holding performance of the PU foamed basketball being cured under a low temperature and mounting the air nozzle, thereby obtaining the finished basketball; by means of the present invention, the prior curing process of the middle bladder and related downstream process can be saved.