JPS6031760A - Gypsum material - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a cast material for immobilizing bones and joints in the event of disease or fracture.

Conventionally, this type of cast material has been provided as a bandage with gypsum powder attached to it, and when used, it is moistened and wrapped around the affected area, and the plaster is fixed by hardening through a water-curing reaction. .

However, the conventional materials mentioned above are susceptible to contamination from the surrounding area with gypsum powder during manufacture or use, are heavy and place a heavy burden on the patient, and take a long time for the gypsum to turn and develop strength. There are drawbacks such as.

The present invention aims to eliminate the above-mentioned conventional drawbacks and provide a cast material that is lightweight and quickly develops strength, and its main feature is to use two-component urethane instead of plaster.

The present invention will be explained in detail below.

The cloth used in the present invention is cotton or polyamide fiber.

Polyester fiber, acrylic fiber, glass fiber.

It is a knitted or nonwoven fabric made of organic or inorganic fibers such as ceramic fibers, and can be made into any shape such as a bandage or skewer.

The two-component curable urethane used in the present invention consists of a compound having two or more hydroxyl groups in one molecule and a polyvalent incyanate compound. Polyethylene glycol is an example of a compound having two or more hydroxyl groups.

Polypropylene glycol, hydroxyalkyl acrylate or methacrylate polymers, copolymers of these with each other, or copolymers of these with other vinyl monomers, phthalic acid, adipic acid, dimerized luic acid, maleic acid, etc. Polyesters of organic acids and polyhydric alcohols such as ethylene glycol, propylene glycol, phthylene gelyl, trimethylolethane, hexanetriol, glycerin, trimethylolethane, pentaerythyl, polyoxypropylene glycol, poly(oxypropylene) ) Polyethers such as poly(oxyethylene) glycol, poly(oxybutylene glycol, poly(oxypropylene) triol, poly(oxypropylene) poly(oxyethylene) triol, or the above-mentioned compounds having a hydroxyl group and 2.4-
) IJ diisocyanate), 4,4'-diphenylmethane diisocyanate, hexamethylene diisocyanate, metaxylylene diisocyanate, and other polyvalent incyanates, and examples thereof include prepolymers having hydroxyl groups at the terminals. The above examples are not intended to limit the invention. As a polyvalent isocyanate compound, 2
．． 4-) lylene diisocyanate), 4.4-diphenylmethane diisocyanate, hexamethylene diisocyanate, metaxylylene diisocyanate, etc. compounds having two or more incyanate groups in one molecule, or having two or more of the above-mentioned hydroxyl groups. Examples include isocyanate adducts or prepolymers that are reaction products of a compound and a compound having two or more isocyanate groups and have incyanate groups at the ends.

A compound having two or more of the above hydroxyl groups (hereinafter referred to as A)
and a polyvalent isocyanate compound (hereinafter referred to as B) are impregnated into a cloth, and if desired, the other is dissolved in a solvent and sealed in, for example, an aerosol. Then, as shown in Figure 1, the impregnated cloth (1) is enclosed in a package (2) preferably made of non-porous plastic film, aluminum foil, etc. Before use, tear the package (2). As shown in Figure 2, it is wrapped around the affected area (3) and the compound encapsulated in the aerosol (4) is sprayed onto it.Thus, A and B come into contact and react, producing strong and lightweight polyurethane in a short time. The affected area (2) is fixed.

Furthermore, as shown in FIG.
1 (1) A and a chamber θ0) B, the chamber (IIAIc forms an inlet part (101) A to be sealed, and the inside is filled with, for example, A and accommodates a roll of cloth (12). [
7. The outer end of the roll is sealed together with the inlet portion (101) A, and the chamber (10) B is filled with B, for example. The above package α0) is subjected to an external impact to break the diaphragm aυ and mix A and B. At the same time, as shown in FIG.
01) Break the seal of A and pull out the cloth (12+) and wrap it around the affected area.A and B come into contact with each other on the cloth O3 to form polyurethane and solidify.

Furthermore, as shown in FIG. 5, a package (20) is formed from a plastic film or the like, and the package (2) is filled with, for example, A and contains a roll of cloth (24), and the outer end of the roll and Seal the inlet part ■A, and then fill and insert the cartridge (23) made of plastic film or the like.Crush the cartridge (23) by hand, and mix the B in the cartridge C23) with A. and the 6th
As shown in the figure, the seal of the entrance part (2) is broken and the cloth (2) is pulled out and wrapped around the affected area at l~ and allowed to solidify in the same manner as in the previous example.

As described above, the present invention relates to a cloth impregnated with a compound having two or more hydroxyl groups or a polyvalent incyanate compound, and a polyvalent incyanate compound or a compound having two or more hydroxyl groups to be applied to the cloth. By bringing both compounds into contact on the cloth, a strong and lightweight polyurethane is produced in a short period of time, and the affected area is fixed.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of the impregnated cloth in a packaged state, Fig. 2 is an explanatory drawing for its use, Figs. FIG. 5 and FIG. 6 are explanatory diagrams of still other embodiments, FIG. 5 is a diagram showing an enclosed state, and FIG. 6 is a diagram showing a pulled-out state.

Claims (1)

[Claims] A cast material consisting of a cloth impregnated with a compound having two or more hydroxyl groups or a polyvalent isocyanate compound, and a polyvalent isocyanate compound or a compound having two or more hydroxyl groups to be applied to the cloth.