A method of manufacturing a liner for reinforcing a pipe includes providing a continuous first reinforcing fibers extending in a first direction, moving the first reinforcing fibers in a machine direction such that the first direction is parallel to the machine direction, providing sheets of a material having second reinforcing fibers extending in a second direction, placing the sheets onto the moving first reinforcing fibers such that the second direction is substantially perpendicular to the first direction, and folding the sheets into a closed shape.

A system for packing and assembling a flexible duct that includes a sleeve. The sleeve includes a tubular vapor barrier and an insulating layer within the vapor barrier and includes a central cavity. Further, the sleeve is radially compressed and rolled along an axial direction. The system also includes an air core sized to fit within the central cavity of the insulating layer. The air core includes a sheet that blocks fluid flow therethrough and a structural support coiled within the sheet and the air core is flattenable and not within the rolled sleeve.

A method of manufacturing a liner for reinforcing a pipe includes providing a continuous first reinforcing fibers extending in a first direction, moving the first reinforcing fibers in a machine direction such that the first direction is parallel to the machine direction, providing sheets of a material having second reinforcing fibers extending in a second direction, placing the sheets onto the moving first reinforcing fibers such that the second direction is substantially perpendicular to the first direction, and folding the sheets into a closed shape.

A method of manufacturing a liner for reinforcing a pipe includes providing a continuous first reinforcing fibers extending in a first direction, moving the first reinforcing fibers in a machine direction such that the first direction is parallel to the machine direction, providing sheets of a material having second reinforcing fibers extending in a second direction, placing the sheets onto the moving first reinforcing fibers such that the second direction is substantially perpendicular to the first direction, and folding the sheets into a closed shape.

The invention relates to long, flexible tubing which can be wound on a spool (coiled tubing or flexible production tubing), and comprises two closed channels combined in a single structure, said channels being formed from a single strip by repeated and successive shaping and welding, and being joined to one another by a connecting, jointing or dividing partition. A connecting partition is perforated, and has mounted thereon a flexible service belt having locking connecting cams which correspond to matching locking holes on the perforated connecting partition. The service belt has electrical cables, wires, capillary tubing, and fiber optic lines arranged therein, and the interval between the connecting cams is twice the size of the interval between the holes on the perforated connecting partition. If the closed channels are joined by an jointing partition, then a pipe-in-pipe design variant is used. If the closed channels are joined by a dividing partition, then the latter also forms part of the wall of both closed channels. The dividing partition can be twice the thickness of the strip. The weld seams, the centers of the closed channels and the partition are situated on a midline of a cross section of the string, parallel to the axis of a spool. The proposed invention makes it possible to significantly increase the potential of coiled tubing units and of the coiled tubing itself by virtue of being multi-channeled and, as a result, multi-functional.

The invention relates to long, flexible tubing which can be wound on a spool (coiled tubing or flexible production tubing), and comprises two closed channels combined in a single structure, said channels being formed from a single strip by repeated and successive shaping and welding, and being joined to one another by a connecting, jointing or dividing partition. A connecting partition is perforated, and has mounted thereon a flexible service belt having locking connecting cams which correspond to matching locking holes on the perforated connecting partition. The service belt has electrical cables, wires, capillary tubing, and fiber optic lines arranged therein, and the interval between the connecting cams is twice the size of the interval between the holes on the perforated connecting partition. If the closed channels are joined by an jointing partition, then a pipe-in-pipe design variant is used. If the closed channels are joined by a dividing partition, then the latter also forms part of the wall of both closed channels. The dividing partition can be twice the thickness of the strip. The weld seams, the centers of the closed channels and the partition are situated on a midline of a cross section of the string, parallel to the axis of a spool. The proposed invention makes it possible to significantly increase the potential of coiled tubing units and of the coiled tubing itself by virtue of being multi-channeled and, as a result, multi-functional.

A method and apparatus for constructing a tubular assembly (24) comprising an inner portion (21) and a further portion (22) surrounding the inner portion, the further portion being formed from a strip (50) of material comprising two opposed longitudinal marginal side portions (53). The apparatus (100) comprises an assembly station (106) having a wall (122). The apparatus (100) comprises means for advancing the inner portion (21) along a first path (111) extending past the wall, and means for advancing the strip (50) along a second path (112) and causing the strip to encircle the wall and thereby wrap about and surround the inner portion (21). The two marginal side portions (53) are disposed in overlapping relation on the side of the wall opposed to the first path (111). The apparatus (100) further comprises a system (131) for affixing the two longitudinal marginal side portions (53) together in overlapping relation to assemble the strip (50) into a tubular configuration about the inner portion (21), whereby the strip in the tubular configuration provides the further portion (22).

A method and apparatus for constructing a tubular assembly (24) comprising an inner portion (21) and a further portion (22) surrounding the inner portion, the further portion being formed from a strip (50) of material comprising two opposed longitudinal marginal side portions (53). The apparatus (100) comprises an assembly station (106) having a wall (122). The apparatus (100) comprises means for advancing the inner portion (21) along a first path (111) extending past the wall, and means for advancing the strip (50) along a second path (112) and causing the strip to encircle the wall and thereby wrap about and surround the inner portion (21). The two marginal side portions (53) are disposed in overlapping relation on the side of the wall opposed to the first path (111). The apparatus (100) further comprises a system (131) for affixing the two longitudinal marginal side portions (53) together in overlapping relation to assemble the strip (50) into a tubular configuration about the inner portion (21), whereby the strip in the tubular configuration provides the further portion (22).

Methods for making medical devices and portions of medical devices (e.g., intravascular catheters, catheter shafts, and tubular guiding members) are provided. Example methods may include providing a first ribbon comprising one or more thermoplastic materials and a piece of shrink tubing defining a shrink tube lumen and forming a first assembly by positioning the first ribbon inside the shrink tube lumen and urging the first ribbon to assume a tubular shape in which the first ribbon defines a ribbon lumen. A second assembly may be formed by loading an inner tubular member over a mandrel and forming or placing a support structure over an outer surface of the inner tubular member. A third assembly may be formed by inserting the second assembly into the ribbon lumen defined by the first ribbon of the first assembly. The third assembly may be heated to a process temperature.

A device for guiding and supporting a stent delivery catheter and other catheters is disclosed. The device may comprise a tubular guiding member and an elongated positioning member extending in a proximal direction beyond the tubular guiding member for advancing and retracting the tubular guiding member in distal and proximal directions. A distal portion of the elongate positioning member may be coupled to the proximal portion of the tubular guide. In embodiments, the device includes a ribbon having a distal portion and a proximal portion. In embodiments, the distal portion of the ribbon extends distally into the tubular guiding member and the proximal portion of the ribbon overlays an inner surface of the elongate positioning member.