초록 ▼

A medical fluid flowline connector comprised of axially aligned relatively rotatable male and female Luer parts and an axially compressible elastomeric seal therebetween. An elastomeric stopper may be provided in the female Luer, the stopper having a swabbable end urged outwardly of the female Luer.

A medical fluid flowline connector comprised of axially aligned relatively rotatable male and female Luer parts and an axially compressible elastomeric seal therebetween. An elastomeric stopper may be provided in the female Luer, the stopper having a swabbable end urged outwardly of the female Luer. The stopper is guided on an axially extending elongated flow conducting insert which has an end which contacts a deformable slit in the swabbable end of the stopper to ensure deformation and opening of the slot as a male Luer at the end of a fluid flowline is pushed against the stopper. The stopper skirt is deformed and displaced into annular space between the female Luer and the insert, the stopper having bellows like walls which engage the female Luer and insert. A retrograde flow preventer may be positioned in the fluid flow path comprising a resilient member having a perforation which remains closed when its exterior surface is exposed to retrograde flow of medication or blood and which may open when its interior surface is exposed to sufficient negative flow pressures as when drawing blood.

대표청구항 ▼

The invention claimed is: 1. A medical connector having a longitudinal axis and comprising: interconnected axially aligned relatively rotatable parts forming a housing with a fluid flow passageway in said housing, said parts being configured for connection to external male and female Luer flowline

The invention claimed is: 1. A medical connector having a longitudinal axis and comprising: interconnected axially aligned relatively rotatable parts forming a housing with a fluid flow passageway in said housing, said parts being configured for connection to external male and female Luer flowline connectors; a compressible seal in said housing having a flow passageway extending from an axially aligned end to an axially offset end whereby relative rotation of said parts opens and closes a fluid flow path through said connector and said seal including a retrograde flow preventer positioned in said fluid flow path, said seal and said retrograde flow preventer being formed as a single piece and said retrograde flow preventer projecting toward a male end of said male Luer connector, said preventer having a resilient portion with a normally closed fluid conducting perforation in said resilient portion which opens at fluid delivery pressures exerted on an interior surface of said resilient portion and which remains closed at patient vascular pressures exerted on an exterior surface of said resilient portion. 2. The medical connector of claim 1, wherein said perforation opens when said interior surface is exposed to negative pressure of an aspirating syringe. 3. The medical connector of claim 2, wherein said first part is a male Luer connector and said second part is a female Luer connector. 4. The medical connector of claim 3, wherein said retrograde flow preventer has an exterior surface projecting toward a male end of said male Luer connector. 5. The medical connector of claim 4, wherein said exterior surface of said retrograde flow preventer is positioned in a recess in said male Luer connector. 6. The medical connector of claim 5, further comprising a clearance space between said exterior surface and said recess whereby said exterior surface of said preventer is exposed to fluid in said fluid flow path. 7. The medical connector of claim 6, wherein said perforation comprises at least one slit. 8. The medical connector of claim 7, wherein said compressible seal is resilient elastomer. 9. The medical connector of claim 1, wherein said exterior surface of said retrograde flow preventer is positioned in a recess in said male Luer connector. 10. The medical connector of claim 9, wherein said perforation comprises at least one slit. 11. The medical connector of claim 10, wherein said compressible seal is silicone. 12. The medical connector of claim 9, further comprising a clearance space between said exterior surface and said recess whereby said exterior surface of said preventer is exposed to fluid in said fluid flow path. 13. A medical connector having a longitudinal axis and comprising: interconnected axially aligned relatively rotatable parts forming a housing with a fluid flow passageway in said housing, said parts being configured for connection to external male and female Luer flowline connectors; a compressible seal in said housing having a flow passageway extending from an axially aligned end to an axially offset end whereby relative rotation of said parts opens and closes a fluid flow path through said connector; a retrograde flow preventer positioned in said fluid flow path, said preventer comprising a resilient member having a normally closed fluid conducting perforation which opens at fluid delivery pressures exerted on an interior surface of said retrograde flow preventer and which remains closed at patient vascular pressures exerted on an exterior surface of said retrograde flow preventer; a flow conducting insert non-rotatably affixed in said female Luer part, said insert having an internal fluid passageway extending from a first axially aligned end to a second end, said second end being offset from said axis; said compressible seal being positioned in said male Luer part, said seal abutting said second end of said insert and said flow passageway extending in said seal between a first axially offset end at said second end of said insert to an axially aligned second end, such that said ends of said flow passageways in abutting ends of said insert and seal may be aligned to open said flow path; and an elastomeric stopper on said insert, said stopper having a swabbable end providing a deformable normally closed opening which may be opened by pushing said swabbable end over said insert by an external male Luer received in said female Luer part, said stopper having an annular axially collapsible skirt engaged with said female Luer part and said insert. 14. The medical connector of claim 13, wherein said first part is a male Luer connector and said second part is a female Luer connector. 15. The medical connector of claim 14, wherein said retrograde flow preventer has an exterior surface projecting toward a male end of said male Luer connector. 16. The medical connector of claim 15, wherein said exterior surface of said retrograde flow preventer is positioned in a recess in said male Luer connector. 17. The medical connector of claim 16, further comprising a clearance space between said exterior surface and said recess whereby said exterior surface of said preventer is exposed to fluid in said fluid flow path. 18. The medical connector of claim 17, wherein said perforation comprises at least one slit. 19. The medical connector of claim 18, wherein said compressible seal is silicone. 20. The medical connector of claim 14, wherein said retrograde flow preventer is integrally formed on said compressible seal and has an exterior surface projecting toward a male end of said male Luer connector. 21. The medical connector of claim 20, wherein said exterior surface of said retrograde flow preventer is positioned in a recess in said male Luer connector. 22. The medical connector of claim 21, further comprising a clearance space between said exterior surface and said recess whereby said exterior surface of said preventer is exposed to fluid in said fluid flow path. 23. The medical connector of claim 21, wherein said perforation comprises at least one slit. 24. The medical connector of claim 23, wherein said compressible seal is silicone. 25. The medical connector of claim 13, wherein said first end of said insert is rounded to facilitate opening of said normally closed opening. 26. The medical connector of claim 25, wherein in said insert includes a seat engageable with said second end of said skirt. 27. The medical connector of claim 26, further comprising relatively engageable stop surfaces on said skirt and said female Luer part to axially retain said skirt in said female Luer part with an exterior surface of said end of said stopper flush with a surrounding portion of said female Luer part. 28. The medical connector of claim 27, wherein said skirt has an axially expansible and contractible portion between said annular seat and said stop surface. 29. The medical connector of claim 28, wherein said skirt slidably contacts said female Luer part and said insert. 30. The medical connector of claim 29, wherein said skirt includes a sealing portion which engages said female Luer part and said insert. 31. The medical connector of claim 13, wherein said female and male Luer parts have abutting faces and exposed surfaces adjacent said faces, said exposed surfaces having indicia which may be aligned at full open and closed positions of the connector. 32. The medical connector of claim 31, wherein said abutting faces extend in radial planes. 33. The medical connector of claim 31, further comprising slidably engageable surfaces on said female and male Luer parts defining full open and closed positions of said connector. 34. The medical connector of claim 13, wherein said female Luer part and said seal have abutting radially extending surfaces. 35. The medical connector of claim 34, wherein said insert and said seal have abutting radially extending surfaces. 36. The medical connector of claim 13, wherein said female and male Luer parts are connected by a snap fit. 37. The medical connector of claim 36, wherein said snap fit connection of said male and female Luer parts causes compression of a peripheral portion of said seal. 38. The medical connector of claim 13, wherein said insert and said female Luer part have mating portions of non-circular cross-section for non-rotatably positioning said insert in said female Luer part. 39. The medical connector of claim 13, wherein said seal and said male Luer part have at least one mating groove and rib to non-rotatably position said seal in said male Luer part. 40. The medical connector of claim 13, wherein said female and male Luer parts and said insert are made of polycarbonate and said stopper and said seal are made of silicone.