Plug device for a transfusible fluid container

Claim 2

A plug device adapted to be in liquid-tight sealed engagement with the mouth of a transfusible fluid container, said plug device comprising: a plug body made of rubber having a needle insertion portion through which, in use, a hollow needle is inserted for delivering fluid from a container sealed by said plug device, and an air passing portion through which, in use, air is sucked into a container sealed by said plug device; a water repellent but air-permeable filter in said air passing portion; a sealing sheet covering at least the surface portion of said plug body which, in use, is contacted by intraveneous fluid contained in said container; and a funnel-shaped air guide having an enlarged skirt portion which is formed integrally with said sealing sheet and having a tubular extension the upper end of which, in use, extends toward the bottom of said container, said funnel-shaped air guide being arranged to guide air sucked through said air passing portion, in use, toward the bottom of said container.

Claim 3

A plug device as claimed in claim 1, wherein said sealing sheet and said funnel-shaped air guide are welded to each other at their peripheral portions.

Claim 4

A plug device as claimed in claim 1, wherein said hollow needle insertion portion includes an inner cavity and at least one outer recess provided on the outer surface of said rubber plug body.

Claim 5

A plug device as claimed in claim 1, wherein said air passing portion includes an inner cavity in which said water repellent but air-permeable filter is forcedly fitted and a slot, one end of said slot communicating with said inner hole and other end being opened to the outer surface of said rubber plug body.

Claim 6

A plug device as claimed in claim 1, wherein said rubber plug body is forcedly fitted into an annular plug cap of plastic material which is adapted to be sealingly engaged with the edge of a mouth of a container.

Claim 7

A plug device according to claim 1 wherein said hollow needle insertion portion comprises a cavity formed in said plug body, said needle insertion portion cavity being open to the inner surface of said plug body, wherein said air passing portion comprises a cavity in which said filter is located, said air passing portion cavity being open to the outer surface of said plug body, and wherein said plug body further comprises a passageway for the flow of air from said air passing portion cavity to said needle insertion portion cavity.

Claim 8

A plug device according to claim 6 wherein said passageway comprises a groove in the inner surface of said plug body.

Claim 9

A plug device according to claim 6 wherein the enlarged skirt portion of said funnel-shaped air guide, in use, is positioned directly above the needle insertion portion cavity whereby a needle inserted, in use, through said needle insertion portion will first penetrate said sealing sheet and then penetrate said skirt portion of said funnel-shaped air guide whereby, in use, air is free to flow from outside said plug into said air passing portion cavity, through said passageway, and into said needle insertion portion cavity.

Claim 10

A plug device adapted to be in liquid-tight sealed engagement with the mouth of a transfusible fluid container, said plug device comprising a plug body made of rubber having a portion through which, in use, a hollow needle is inserted for delivering fluid from a container sealed by said plug device, and an air-passing portion through which, in use, air is sucked into a container sealed by said plug device; a water repellent but air-permeable filter which is forcedly inserted into said air passing portion; a sealing sheet covering at least the surface portion of said plug body which, in use, is contacted by intraveneous fluid contained in said container; and a funnel-shaped air guide which is formed integrally with said sealing sheet and the upper end of which, in use, extends toward the bottom of said container, said funnel-shaped air guide being arranged to guide the air sucked into said container, in use, through said filter toward the bottom of said container, said sealing sheet and said funnel-shaped air guide being made of polypropylene, and being welded to each other at their peripheral portions by a high frequency induction welding.

Claim 11

A plug device adapted to be in liquid-tight sealed engagement with the mouth of a transfusible fluid container, said plug device comprising a plug body made of rubber having a portion through which, in use, a hollow needle is inserted for delivering fluid from a container sealed by said plug device, and an air-passing portion through which, in use, air is sucked into a container sealed by said plug device; a water repellent but air-permeable filter which is forcedly inserted into said air passing portion; a sealing sheet covering at least the surface portion of said plug body which, in use, is contacted by intraveneous fluid contained in said container; and a funnel-shaped air guide which is formed integrally with said sealing sheet and the upper end of which, in use, extends toward the bottom of said container, said funnel-shaped air guide being arranged to guide the air sucked into said container, in use, through said filter toward the bottom of said container, said sealing sheet and said funnel-shaped air guide being made of polypropylene, and being welded to each other at their peripheral portions by a high frequency induction welding.

Claim 12

A transfusible fluid container according to claim 9 further comprising an outer sealing cap of a metal for holding the plug device in the mouth of the bottle, said sealing cap being partially removable.

Claim 13

In a transfusible fluid container having a plug device in liquid tight sealing engagement with the mouth of the container, the improvement wherein the plug device comprises: a plug body made of rubber having a needle insertion portion through which, in use, a hollow needle is inserted for delivering fluid from a container sealed by said plug device and an air passing portion through which in use, air is sucked into said container; a water repellent but air-permeable filter in said air passing portion; a sealing sheet covering at least the surface portion of said plug body which, in use, is contacted by intraveneous fluid contained in said container; and a funnel-shaped air guide having an enlarged skirt portion which is formed integrally with said sealing sheet and having a tubular extension the upper end of which, in use, extends toward the bottom of said container, said funnel-shaped air guide being arranged to guide the air sucked through said air-passing portion, in use, toward the bottom of said container.

Claim 14

In a transfusible fluid container having a plug device in liquid tight sealing engagement with the mouth of the container, the improvement wherein the plug device comprises: a plug body made of rubber having a needle insertion portion through which, in use, a hollow needle is inserted for delivering fluid from a container sealed by said plug device and an air passing portion through which in use, air is sucked into said container; a water repellent but air-permeable filter in said air passing portion; a sealing sheet covering at least the surface portion of said plug body which, in use, is contacted by intraveneous fluid contained in said container; and a funnel-shaped air guide having an enlarged skirt portion which is formed integrally with said sealing sheet and having a tubular extension the upper end of which, in use, extends toward the bottom of said container, said funnel-shaped air guide being arranged to guide the air sucked through said air-passing portion, in use, toward the bottom of said container.

Claim 15

A transfusible fluid container according to claim 11 wherein said container comprises a plastic bottle and wherein said rubber plug body is wholly covered with said sealing sheet which in turn is integrally secured to the mouth of said plastic bottle.

Claim 16

A transfusible fluid container according to claim 11 wherein said sealing sheet and said funnel-shaped air guide are welded to each other at their peripheral portions.

Claim 17

A transfusible fluid container according to claim 11, wherein said hollow needle insertion portion includes an inner cavity and at least one outer recess provided on the outer surface of said rubber plug body.

Claim 18

A transfusible fluid container according to claim 11, wherein said air passing portion includes an inner cavity in which said water repellent but air-permeable filter is forcedly fitted and a slot, one end of said slot communicating with said inner hole and other end being opened to the outer surface of said rubber plug body.

Claim 19

A transfusible fluid container according to claim 11, wherein said rubber plug body is forcedly fitted into an annular plug cap of plastic material which is adapted to be sealingly engaged with the edge of the mouth of said container.

Claim 20

A transfusible fluid container according to claim 11 wherein said hollow needle insertion portion comprises a cavity formed in said plug body, said needle insertion portion cavity being open to the inner surface of said plug body, wherein said air passing portion comprises a cavity in which said filter is located, said air passing portion cavity being open to the outer surface of said plug body, and wherein said plug body further comprises a passageway for the flow of air from said air passing portion cavity to said needle insertion portion cavity.

Claim 21

A transfusible fluid container according to claim 17 wherein said passageway comprises a groove in the inner surface of said plug body.

Claim 22

A transfusible fluid container according to claim 17 wherein the enlarged skirt portion of said funnel-shaped air guide, in use, is positioned directly above the needle insertion portion cavity whereby a needle inserted, in use, through said needle insertion portion will first penetrate said sealing sheet and then penetrate said skirt portion of said funnel-shaped air guide whereby, in use, air is free to flow from outside said plug into said air passing portion cavity, through said passageway, and into said needle insertion portion passageway.

Claim 23

In a transfusible fluid container having a plug device in liquid tight sealing engagement with the mouth of the container, the improvement wherein said plug body comprises: a plug body made of rubber having a portion through which, in sue, a hollow needle is inserted for delivering fluid from a container sealed by said plug device, and an air-passing portion through which, in use, air is sucked into a container sealed by said plug device; a water repellent but air-permeable filter which is forcedly inserted into said air passing portion; a sealing sheet covering at least the surface portion of said plug body which, in use, is contacted by intraveneous fluid contained in said container; and a funnel-shaped air guide which is formed integrally with said sealing sheet and the upper end of which, in use, extends toward the bottom of said container, said funnel-shaped air guide being arranged to guide the air sucked into said container, in use, through said filter toward the bottom of said container, said sealing sheet and said funnel-shaped air guide being made of polypropylene, and being welded to each other at their peripheral portions by a high frequency induction welding.

Claim 24

In a transfusible fluid container having a plug device in liquid tight sealing engagement with the mouth of the container, the improvement wherein said plug body comprises: a plug body made of rubber having a portion through which, in sue, a hollow needle is inserted for delivering fluid from a container sealed by said plug device, and an air-passing portion through which, in use, air is sucked into a container sealed by said plug device; a water repellent but air-permeable filter which is forcedly inserted into said air passing portion; a sealing sheet covering at least the surface portion of said plug body which, in use, is contacted by intraveneous fluid contained in said container; and a funnel-shaped air guide which is formed integrally with said sealing sheet and the upper end of which, in use, extends toward the bottom of said container, said funnel-shaped air guide being arranged to guide the air sucked into said container, in use, through said filter toward the bottom of said container, said sealing sheet and said funnel-shaped air guide being made of polypropylene, and being welded to each other at their peripheral portions by a high frequency induction welding.