A sealing device for a foot therapeutic apparatus includes an airtight sleeve and a sealing member. The airtight sleeve includes a treatment box connecting end and a limb inlet end. The sealing member is fixedly mounted at the limb inlet end. The sealing member includes a tightening band and an annular gas bag located on the outer periphery of the tightening band. The annular gas bag is connected to a gas source. A foot therapeutic apparatus with the sealing device includes a treatment chamber and an electrical chamber. The treatment chamber comprises a treatment box, and the sealing device is arranged on the treatment box. A box opening is arranged at a top of the treatment box, and the treatment box connecting end of the airtight sleeve of the sealing device is hermetically connected to the box opening.

There is provided a method for decreasing leakage of matter from an object to a surrounding, said object being coated with a coating at least partially applied on the object, said coating comprising an at least partially covering layer comprising silver, said object optionally comprising area(s) without said layer, said coating comprising metal particles applied on the layer and optionally on areas without said layer, said metal particles comprising palladium and at least one metal selected from the group consisting of gold, ruthenium, rhodium, osmium, iridium, niobium, neodymium and platinum and wherein the amount of the metal particles is in the interval 0.01-8 μg/cm.sup.2. Advantages include that leakage of matter such as latex allergens of metal ions can be reduced while the coating is both biocompatible and antimicrobial. Further, the blood clotting can be reduced.

This application relates to synthetic elastomeric articles, such as gloves, comprising the cured product of a synthetic latex composition, the synthetic latex composition comprising a synthetic carboxylated polymer and a cross-linking composition, the cross-linking composition comprising an aqueous solution of a negatively charged multivalent metal complex ion having a pH of at least 9.0. Also described are compositions for forming the articles, and methods for making the articles, based on the use of the described cross-linking composition. The articles, compositions and methods contain a second cross-linking agent comprising either (a) sulphur and a sulphur donor, (b) a multivalent metal oxide or ionic cross-linking agent, (c) sulphur, a sulphur donor and an ionic cross-linking agent, or (d) sulphur donor.

A synthetic polyisoprene latex emulsion has pre-vulcanization composition and post vulcanization composition. The pre-vulcanization composition comprises insoluble amorphous sulfur extracted with zinc dithiocarbamate catalyst at 20° C. to form sulfur chain and transported to interior of synthetic polyisoprene particle forming physical attachment of sulfur to active sites. The degree of pre-vulcanization is verified by expansion of cast and dried film of latex in toluene in 20 minutes by means of a swelling index test. The latex emulsion is vulcanized at 90° C. to 120° C. for 3 to 5 minutes. Post-vulcanization composition with accelerators crosslink between synthetic polyisoprene particles, uniformly curing both in the inter-particle and intra-particle regions to produce high cross link density, uniform distribution of double bonds with zinc segregation at the boundaries of original particles. The condom exhibits high tensile strength, tensile modulus, elongation with excellent tear strength releasing below 10 ppb of nitrosamines.

A synthetic polyisoprene latex emulsion has pre-vulcanization composition and post vulcanization composition. The pre-vulcanization composition comprises insoluble amorphous sulfur extracted with zinc dithiocarbamate catalyst at 20° C. to form sulfur chain and transported to interior of synthetic polyisoprene particle forming physical attachment of sulfur to active sites. The degree of pre-vulcanization is verified by expansion of cast and dried film of latex in toluene in 20 minutes by means of a swelling index test. The latex emulsion is vulcanized at 90° C. to 120° C. for 3 to 5 minutes. Post-vulcanization composition with accelerators crosslink between synthetic polyisoprene particles, uniformly curing both in the inter-particle and intra-particle regions to produce high cross link density, uniform distribution of double bonds with zinc segregation at the boundaries of original particles. The condom exhibits high tensile strength, tensile modulus, elongation with excellent tear strength releasing below 10 ppb of nitrosamines.

Provided are multilayer synthetic rubber compositions formed from a layer of a styrene block copolymer composition and a layer of one or more synthetic elastomers, such as polychloroprene, polyisoprene, nitrile rubber, styrene butadiene rubber, butyl rubber and polyurethane. The multilayer compositions find use in the manufacture of thin walled articles, for example gloves, particularly medical or industrial gloves.

Devices to secure the hand of a patient to a limb positioning device while evenly distributing the applied traction load across the patient's hand and wrist are disclosed. The hand is placed in the open position into a soft mitten, while an anatomically-shaped plate is attached to the mitten for supporting the palm of the hand in the open position. Straps are then secured around the patient's wrist and hand. Finally, the entire device is overwrapped an elastic bandage and secured to the limb positioning device. When traction is applied, the shape of the plate, the construction of the mitten, and the straps combine to allow low-contact pressure across the patient's hand and wrist.

The present invention relates to a method of preparing reduced graphene oxide, incorporation of the reduced graphene oxide into polyisoprene latex to provide a polyisoprene latex graphene composite and elastomeric articles prepared using the polyisoprene latex-graphene composite. In particular, the reduction of graphene oxide is accomplished without the use of strong reducing agents and organic solvents and incorporation of the reduced graphene oxide into polyisoprene latex is accomplished using room temperature latex mixing method or hot maturation. The resultant composite exhibits good colloid stability, and polyisoprene latex films produced the composite exhibit good mechanical properties with improved ageing resistance.

The present disclosure describes a strategy to create self-healing, slippery self-lubricating polymers. Lubricating liquids with affinities to polymers can be utilized to get absorbed within the polymer and form a lubricant layer (of the lubricating liquid) on the polymer. The lubricant layer can repel a wide range of materials, including simple and complex fluids (water, hydrocarbons, crude oil and bodily fluids), restore liquid-repellency after physical damage, and resist ice, microorganisms and insects adhesion. Some exemplary applications where self-lubricating polymers will be useful include energy-efficient, friction-reduction fluid handling and transportation, medical devices, anti-icing, optical sensing, and as self-cleaning, and anti-fouling materials operating in extreme environments.

A sealing device for a foot therapeutic apparatus includes an airtight sleeve and a sealing member. The airtight sleeve includes a treatment box connecting end and a limb inlet end. The sealing member is fixedly mounted at the limb inlet end. The sealing member includes a tightening band and an annular gas bag located on the outer periphery of the tightening band. The annular gas bag is connected to a gas source. A foot therapeutic apparatus with the sealing device includes a treatment chamber and an electrical chamber. The treatment chamber comprises a treatment box, and the sealing device is arranged on the treatment box. A box opening is arranged at a top of the treatment box, and the treatment box connecting end of the airtight sleeve of the sealing device is hermetically connected to the box opening.