초록 ▼

A medical delivery device comprising an elongate body having a plunger slidably and sealingly engaged to form a cavity to receive fluid materials and a first outlet disposed at an end of said body and has a male luer end portion and a valve assembly is disposed within the first outlet. The valve ass

A medical delivery device comprising an elongate body having a plunger slidably and sealingly engaged to form a cavity to receive fluid materials and a first outlet disposed at an end of said body and has a male luer end portion and a valve assembly is disposed within the first outlet. The valve assembly has a valve means movable between an open position and a closed position and biasing means for biasing the valve means to a closed position. Actuating means are disposed within the male luer end portion and coupled to the valve means such that the valve means is movable to an open position when a female luer end portion of a medical accessory is coupled with the male luer end portion. A second outlet is disposed at the same end as the first outlet for controlling the exchange of gases from the environment to said cavity under the action of the plunger. Lastly, a third outlet is disposed at the same end as the first outlet for controlling the exchange of gases from the cavity to the environment under the action of the plunger.

대표청구항 ▼

The invention claimed is: 1. A medical dispensing device, comprising: a body having a cavity to receive fluid materials; a first outlet disposed at an end of said body wherein said first outlet includes a male luer end portion; a pressure exerting means for the transferal of liquid from said cavity

The invention claimed is: 1. A medical dispensing device, comprising: a body having a cavity to receive fluid materials; a first outlet disposed at an end of said body wherein said first outlet includes a male luer end portion; a pressure exerting means for the transferal of liquid from said cavity through said first outlet and the transferal of gases between said cavity and the environment; and at least one secondary outlet disposed at said end for controlling the exchange of gases between the environment and said cavity under the action of said pressure exerting means, further comprising a valve assembly disposed within said first outlet comprising a valve means movable between an open position and a closed position, biasing means for biasing said valve means to a closed position, actuating means disposed within the male luer end portion of said first outlet and coupled to said valve means such that said valve means is movable to an open position when a female luer end portion of a medical accessory is coupled with said male luer end portion. 2. The medical dispensing device of claim 1, wherein the biasing means comprises at least one resilient cam member and at least one cam follower. 3. The medical dispensing device of claim 2, wherein said cam follower is an inwardly and upwardly extending slot disposed on a cylindrical housing, wherein said cylindrical housing has an axial bore dimensioned for fit with said valve means and fluid communication with said body. 4. The medical dispensing device of claim 3 further including a valve housing disposed within said secondary outlet, and having disposed within said valve housing, a valve selected from a one-way valve for controlling the transfer of gases from said cavity to the environment, a one-way valve for controlling the transfer of gases from the environment to said cavity and a two-way valve for controlling the transfer of gases between said cavity and the environment. 5. The medical dispensing device of claim 4 further including a third outlet disposed at said end for controlling the exchange of gases from the environment to said cavity under the action of said pressure exerting means and optionally further including a valve housing disposed within said third outlet, said valve housing having disposed therein either a one way valve for controlling the transfer of gases from the environment to said cavity or a two way valve for controlling the transfer of gases between said cavity and the environment. 6. The medical dispensing device of claim 5 further including a filter to prevent entry of bacteria or viruses into the cavity, and a hydrophobic or oleophobic membrane to prevent liquid from entering said secondary outlet or said third outlet, disposed in series between at least one of said valves and the cavity, with said hydrophobic or oleophobic membrane being proximal to said cavity. 7. The medical dispensing device of claim 5 further including a membrane having hydrophobic properties or oleophobic properties and additionally filter properties, disposed between at least one of said valves and said cavity. 8. The medical dispensing device of claim 7 further including an oleophobic membrane and a hydrophobic membrane, disposed adjacent to one another, the oleophobic membrane being proximal to said cavity. 9. The medical dispensing device of claim 5 further including at least one membrane selected from an oleophobic membrane, a hydrophobic membrane and a hydrophobic membrane in combination with a oleophobic membrane disposed between said cavity and at least one of said valves, subject to the proviso that if the membrane is a hydrophobic membrane in combination with an oleophobic membrane the oleophobic membrane is disposed proximal to the cavity. 10. The medical dispensing device of any of claims 5 or 6-9 wherein said actuating means comprises at least one arm coaxial with said first outlet and a backing means attached thereto, the backing means having an aperture dimensioned for cooperable movement with said valve means. 11. The medical dispensing device of claim 10 wherein the backing means is a circular disk having an outer diameter slightly less that the inner diameter of said first outlet. 12. The medical dispensing device of claim 11 wherein said pressure exerting means is selected from a plunger slidably and sealingly engaged with the interior of said body and a peristaltic pump. 13. The medical dispensing device of claim 10 wherein said pressure exerting means is selected from a plunger slidably and sealingly engaged with the interior of said body and a peristaltic pump. 14. The medical dispensing device of claim 4 further including a filter to prevent entry of bacteria or viruses into the cavity, and a hydrophobic or oleophobic membrane to prevent liquid from entering said secondary outlet or said third outlet, disposed in series between at least one of said valves and the cavity, with said hydrophobic or oleophobic membrane being proximal to said cavity. 15. The medical dispensing device of claim 4 further including a membrane having hydrophobic properties or oleophobic properties and additionally filter properties, disposed between at least one of said valves and said cavity. 16. The medical dispensing device of claim 15 further including an oleophobic membrane and a hydrophobic membrane, disposed adjacent to one another, the oleophobic membrane being proximal to said cavity. 17. The medical dispensing device of claim 4 further including at least one membrane selected from an oleophobic membrane, a hydrophobic membrane and a hydrophobic membrane in combination with a oleophobic membrane disposed between said cavity and at least one of said valves, subject to the proviso that if the membrane is a hydrophobic membrane in combination with an oleophobic membrane the oleophobic membrane is disposed proximal to the cavity. 18. The medical dispensing device of any of claims 4 or 14-17 wherein said actuating means comprises at least one arm coaxial with said first outlet and a backing means attached thereto, the backing means having an aperture dimensioned for cooperable movement with said valve means. 19. The medical dispensing device of claim 18 wherein the backing means is a circular disk having an outer diameter slightly less that the inner diameter of said first outlet. 20. The medical dispensing device of claim 19 wherein said pressure exerting means is selected from a plunger slidably and sealingly engaged with the interior of said body and a peristaltic pump. 21. The medical dispensing device of claim 18 wherein said pressure exerting means is selected from a plunger slidably and sealingly engaged with the interior of said body and a peristaltic pump. 22. The medical dispensing device of claim 1 wherein said actuating means comprises at least one arm coaxial with said first outlet and a backing means attached thereto, the backing means having an aperture dimensioned for cooperable movement with said valve means. 23. The medical dispensing device of claim 22 wherein the backing means is a circular disk having an outer diameter slightly less that the inner diameter of said first outlet. 24. A medical dispensing device, comprising: a body having a cavity to receive fluid materials; a first outlet including a male luer end portion disposed at an end of said body; a pressure exerting means for the transferal of liquid from said cavity through said first outlet and the transferal of gases between said cavity and the environment; at least one secondary outlet disposed at said end for controlling the exchange of gases between the environment and said cavity under the action of said pressure exerting means; a valve assembly disposed within said first outlet comprising a valve means movable between an open position and a closed position, biasing means for biasing said valve means to a closed position, actuating means disposed within the male luer end portion of said first outlet and coupled to said valve means such that said valve means is movable to an open position when a female luer end portion of a medical accessory is coupled with said male luer end portion, wherein the biasing means comprises at least one resilient cam member and at least one cam follower and wherein said cam follower is an inwardly and upwardly extending slot disposed on a cylindrical housing, wherein said cylindrical housing has an axial bore dimensioned for fit with said valve means and fluid communication with said body; a valve housing disposed within said secondary outlet, and having disposed within said valve housing, a valve selected from a one-way valve for controlling the transfer of gases from said cavity to the environment, a one-way valve for controlling the transfer of gases from the environment to said cavity and a two-way valve for controlling the transfer of gases between said cavity and the environment; and a third outlet disposed at said end for controlling the exchange of gases from the environment to said cavity under the action of said pressure exerting means and optionally further including a valve housing disposed within said third outlet, said valve housing having disposed therein either a one way valve for controlling the transfer of gases from the environment to said cavity or a two way valve for controlling the transfer of gases between said cavity and the environment. 25. The medical dispensing device of claim 24 further including at least one membrane selected from an oleophobic membrane, a hydrophobic membrane and a hydrophobic membrane in combination with a oleophobic membrane disposed between said cavity and at least one of said valves, subject to the proviso that if the membrane is a hydrophobic membrane in combination with an oleophobic membrane the oleophobic membrane is disposed proximal to the cavity. 26. The medical dispensing device of claim 25 wherein the at least one membrane is integral with at least one valve. 27. The medical dispensing device of claim 26 further including a filter disposed between the end of at least one of said valves distal to said cavity and the environment to prevent entry of sterility-compromising contaminants. 28. The medical dispensing device of claim 26 including a membrane having hydrophobic properties or oleophobic properties and additionally filter properties, disposed between at least one of said valves and said cavity. 29. The medical dispensing device of claim 28 including an oleophobic membrane and a hydrophobic membrane, disposed adjacent to one another, the oleophobic membrane being proximal to said cavity. 30. The medical dispensing device of claim 29 wherein the hydrophobic membrane is integral to the valve. 31. The medical dispensing device of claim 25, 27 or 30 further including a filter to prevent entry of bacteria or viruses into the cavity, and a hydrophobic or oleophobic membrane to prevent liquid from entering said secondary outlet or said third outlet, disposed in series between at least one of said valves and the cavity, with said hydrophobic membrane or oleophobic membrane being proximal to said cavity. 32. The medical dispensing device of claim 31 wherein said actuating means comprises at least one arm coaxial with said first outlet and a backing means attached thereto, the backing means having an aperture dimensioned for cooperable movement with said valve means and wherein the backing means is a circular disk having an outer diameter slightly less that the inner diameter of said first outlet. 33. The medical dispensing device of claim 32 wherein said pressure exerting means is selected from a plunger slidably and sealingly engaged with the interior of said body and a peristaltic pump. 34. The medical dispensing device of claim 25 wherein said actuating means comprises at least one arm coaxial with said first outlet and a backing means attached thereto, the backing means having an aperture dimensioned for cooperable movement with said valve means and wherein the backing means is a circular disk having an outer diameter slightly less that the inner diameter of said first outlet. 35. The medical dispensing device of claim 34 wherein said pressure exerting means is selected from a plunger slidably and sealingly engaged with the interior of said body and a peristaltic pump.