A medical device includes a multi-layer body defining an interior space configured to contain a liquid. The multi-layer body includes a solid outer wall having a positive Poisson's ratio and a porous inner wall having a negative Poisson's ratio. A method of making a multi-layer body includes applying a stimulus to a precursor material to cause the precursor material to form a porous wall having a negative Poisson's ratio, and attaching a solid wall to the porous wall to form the multi-layer body, the solid wall having a positive Poisson's ratio. A suture includes one or more filaments, at least a first filament of the one or more filaments including a negative Poisson's ratio material. A medical device includes a biocompatible hydrogel, and the biocompatible hydrogel includes a composite of a first material having a negative Poisson's ratio and a second material having a positive Poisson's ratio.

A resin composition for a refrigerant-transporting hose contains a thermoplastic resin and an elastomer, the thermoplastic resin and the elastomer forming a sea-island structure of a matrix of the thermoplastic resin and a domain of the elastomer, the resin composition having a P(O.sub.2), an M10, and a P(H.sub.2O) satisfying2: 0 < P(O.sub.2) x M10 ≤ 150 and log(P(H.sub.2O)/P(O.sub.2)) ≤ 0.9, where the P(O.sub.2) is an oxygen permeability coefficient [cm.Math.cm.sup.3/(cm.sup.2.Math.s.Math.cmHg)] at a temperature of 21° C. and a relative humidity of 50%, the M10 is a 10% modulus [MPa] at a temperature of 25° C., and the P(H.sub.2O) is a water vapor permeability coefficient [cm.Math.cm.sup.3/(cm.sup.2.Math.s.Math.cmHg)] at a temperature of 60° C. and a relative humidity of 100%.

A braided tube includes a hollow cylindrical inner resin layer made of thermoplastic polyurethane resin, a braided wire including braided strands made of nylon and being provided over a periphery of the inner resin layer, and an outer resin layer made of thermoplastic polyurethane resin and being provided to cover peripheries of the inner resin layer and the braided wire. A width of a void formed around the strand of the braided wire in a cross section perpendicular to a tube longitudinal direction is 30 μm or less.

A single layer/ply multi-use hose is contemplated. A thermoplastic polymer, such as polyurethane, is extruded through a woven tubular mesh of aramid fibers so as to encourage pillaring through gaps in the mesh of a sufficient amount to improve the overall durability and strength of the resultant hose. This wide diameter (at least 4 inches) and long continuous length (at least 300 feet) hose exhibits excellent durability (e.g., resistance to abrasion and/or punctures) and tensile ratios in excess of 2:1 so as to withstand tensile loads in excess of 100,000 pounds without delamination or bubbling within the hose wall.

In certain embodiments, a hose includes an inner tube, a filler material, and an outer cover. The inner tube has a cross-sectional shape and includes a cavity for transporting a substance. The filler material is provided around an outer periphery of the inner tube. The filler material includes a self-sealing material or a self-healing material. The outer cover is provided around an outer periphery of the filler material such that the filler material is between the outer cover and the inner tube. The outer cover has a D-shaped cross-sectional shape.

A tube includes a corrugated metal tubular member; and a first covering part that covers the outside of the tubular member, and forms a braided structure using a resin string member of which at least a part is covered by a metal having lower electrical resistance than that of a metal forming the tubular member. The tube can also include a third covering part made of an insulating resin arranged between the tubular member and the first covering part, and covers the tubular member, wherein the first covering part covers the third covering part.

The present invention discloses an extensible flexible hose comprise one elastic inner layer, one elastic textile reinforcement layer and one elastic outer layer, where the elastic textile reinforcement layer placed on the outer surface of the elastic inner layer, the elastic outer layer disposed on the elastic textile reinforcement layer, while the elastic inner layer and the elastic textile reinforcement layer are reciprocally coupled, the elastic outer layer and the uncovered surface area of the elastic inner layer are reciprocally joined to form a unitary tubular member. The elastic textile reinforcement layer comprising a twill weave textile layer, with stretch yarns longitudinally distributed among. The objective of the present invention is to improve the phenomenon that the telescopic water pipe is liable to be damaged due to strong friction between inner core and outer sheath, to prolong the service life of the extensible flexible hose. The hose body adopts elastic materials, which has advantages as great elasticity, easy carrying, easy cleaning, and convenient storage.

A hose includes an outer cover layer and at least one ply disposed inward from the outer cover layer, characterized in that the outer cover layer is a shrink sleeve, and where the at least one ply is formed from a reinforced silicone rubber sheet which includes a reinforcement. The hose may further include an inner layer disposed within the at least one ply, and which defines a lumen. The shrink sleeve may be a polyolefin shrink sleeve. The layers are tensioned together with the shrink sleeve. The hose may be prepared by a shrink tension method without the use of a tape wrap. A method of preparing the above hose may include wrapping the inner layer around a mandrel, wrapping the at least one at least one ply around the inner layer, pulling the shrink sleeve over the at least one at least one ply, and vulcanizing the hose.

A flexible polymeric pipe for transportation of oil, gas or water, having an unbonded reinforcing intermediate layer between two polymeric layers. The pipe has a vent for the intermediate layer which allows venting of gas from the intermediate layer through to the exterior environment. The vent is generally impervious to water but pervious to air and gas.

A hose assembly defines a longitudinal axis and includes an inner core tube, a thermal distribution element, and a heating element. The thermal distribution element surrounds the inner core tube, the thermal distribution element including a metalized coated film. The heating element surrounds the inner core tube, the heating element being in thermal contact with the metalized coated film.