Autoclavable medicinal-containing bag from ethylene-vinyl acetate copolymer

Claim 2

A medical bag containing liquid medicine comprising: a flexible bag body which is durable to autoclave sterilization at a temperature as high as 121° C. formed of a copolymer cross-linked by electron beam irradiation of a total dose of 5 to 15 Mrad and having the degree of cross-linking of 50 to 75% such that said bag body withstands high vapor pressure sterilization without deformation, said copolymer having units represented by the formulas: ##STR8## and a liquid medicine contained in said bag body.

Claim 3

A medical bag according to claim 1, wherein said bag body is provided by a pair of sheets formed of said cross-linked copolymer.

Claim 4

A medical bag according to claim 2, wherein said sheets have a thickness of 0.1 to 0.4 mm.

Claim 5

A medical bag according to claim 1, wherein said copolymer has a weight average molecular weight of about 10,000 to 250,000.

Claim 6

A medical bag according to claim 1, wherein said bag body withstands the attack by said liquid medicine.

Claim 7

A medical bag according to claim 5, wherein said bag body exhibits low vapor permeability.

Claim 8

A medical bag containing liquid medicine comprising: a flexible bag body which is durable to autoclave sterilization at a temperature as high as 121° C. formed of a copolymer having units represented by the formulas: ##STR9## and a liquid medicine contained in said bag body, wherein said bag body is prepared by heat-fusing peripheral portions of a bag molding prepared from said copolymer, and irradiating said bag molding with electron beam at a total dose of 5 to 15 Mrad to attain the degree of cross-linking of 50 to 75% in said copolymer forming said bag molding, thereby providing said bag body.

Claim 9

A medical bag containing liquid medicine comprising: a flexible bag body which is durable to autoclave sterilization at a temperature as high as 121° C. formed of a copolymer having units represented by the formulas: ##STR9## and a liquid medicine contained in said bag body, wherein said bag body is prepared by heat-fusing peripheral portions of a bag molding prepared from said copolymer, and irradiating said bag molding with electron beam at a total dose of 5 to 15 Mrad to attain the degree of cross-linking of 50 to 75% in said copolymer forming said bag molding, thereby providing said bag body.

Claim 10

A medical bag according to claim 7, wherein the bag molding has a thickness of 0.1 to 0.4 mm.

Claim 11

A medical bag according to claim 7, wherein said copolymer has a weight average molecular weight of about 10,000 to 250,000.

Claim 12

A medical bag according to claim 7, wherein said bag body withstands attack by said liquid medicine.

Claim 13

A medical bag according to claim 7, wherein said bag body exhibits low vapor permeability.

Claim 14

A medical bag containing liquid medicine comprising: a flexible bag body formed of an ethylene-vinyl acetate copolymer of from 15 to 30% vinyl acetate units and 70 to 85% ethylene units cross-linked by electron beam irradiation at a total dose of 5 to 15 Mrad and having a degree of cross-linking of about 50 to 75% such that said bag body is durable to autoclave sterilization at a temperature as high as 121° C.; and a liquid medicine contained in said bag body.

Claim 15

A medical bag containing liquid medicine comprising: a flexible bag body formed of an ethylene-vinyl acetate copolymer of from 15 to 30% vinyl acetate units and 70 to 85% ethylene units cross-linked by electron beam irradiation at a total dose of 5 to 15 Mrad and having a degree of cross-linking of about 50 to 75% such that said bag body is durable to autoclave sterilization at a temperature as high as 121° C.; and a liquid medicine contained in said bag body.

Claim 16

A medical bag according to claim 8, wherein the ethylene-vinyl acetate copolymer contains from about 17 to 20% of vinyl acetate units with the remainder being ethylene units.