Processing

Please wait...

Settings

Settings

Goto Application

1. WO1990012606 - iRE-SLIT INJECTION SITE AND TAPERED CANNULA

Note: Text based on automatic Optical Character Recognition processes. Please use the PDF version for legal matters

[ EN ]

WHAT IS CLAIMED IS:

1. An injection site usable with a blunt cannula device, , said Injection site comprising:
_ a housing having a fluid passageway therein and means defining first and second openings within said housing in communication with said passageway;
flexible means carried by said housing for sealing said first opening, said means having a resealable opening therein

.- and curved exterior peripheral surface such that a blunt cannula can be sealingly Inserted through said resealable opening and placed in fluid flow communication with said passageway an such that the blunt cannula can be removed therefrom with said flexible means interacting with said housing so as to reseal

,g said resealable opening; and
first and second distinct locking means on the exterior of said housing for cooperation with a plurality of blunt cannula devices.
2. An injection site as recited in Claim 1 wherein said

20 housing further includes exterior grasping means for grasping said injection site while inserting or withdrawing a cannula.
3. An injection, site as recited in Claim 1 including identification means carried by said housing for identifying said injection site as being usable with a blunt cannula device. 5 4. An injection site as recited in Claim 3 wherein said identification mans comprises visually perceptible indicia.
5. An injection site as recited in Claim 4 wherein said Indicia comprises a colored ring circumscribing said flexible means.
6. An injection site as recited in Claim 1 wherein said 0
first locking means includes a substantially radially extending shoulder defined on the exterior surface of said housing.
7. An injection site as recited in Claim 6 wherein said second locking means includes means for threadedly engaging a blunt cannula device.

8. An injection site as recited in Claim 2 wherein said grasping means is generally tapered substantially throughout its length.
9. An injection site as recited in Claim 8 wherein said grasping means tapers curvilinearly.
10. An injection site as recited in Claim 8 wherein said grasping means includes a plurality of radially projecting spline.
11. An injection site usable with a blunt cannula device comprising:
a housing having a fluid passageway therein and means defining first and second openings within said housing in communication with said passageway;
flexible means carried by said housing for sealing said first opening, said means having a resealable opening therein and a curved exterior peripheral surface such that a blunt cannula can be sealingly inserted through said resealable opening and placed in fluid flow communication with said passageway and such that the blunt cannula can be removed therefrom with said flexible means interacting with said housing so as to reseal said resealable opening;
means defining a generally radially extending shoulder on the exterior for said housing for locking engagement with one type of blunt cannula device;
means defined on the exterior of said housing for threaded engagement with another type of blunt cannula device;
grasping means circumscribing said housing to aid in grasping said injection site while inserting or withdrawing a blunt cannula, said grasping means being tapered substantially throughout its length; and
visually perceptible identification means carried by said housing to identify said injection site as being usable with a blunt cannula device, said identification means comprising a colored ring circumscribing said flexible means and being of a color different from said housing.

12. An injection site usable with a blunt cannula device comprising:
a housing having an inlet and outlet and defining a fluid channel therebetween;
means defining an access aperture in communication with fluid channel; and
flexible means carried by said housing for sealing said access aperture, said means having a resealable opening therein and a curved exterior peripheral surface such that a blunt cannula can be sealingly inserted through said opening and 0
placed in fluid flow communication with said channel and such that the blunt cannula can be removed therefrom with said flexible means interacting with said housing so as to reseal said resealable opening,
g 13. A blunt-ended cannula device for use with a pre-slit injection site, said cannula device comprising:
an elongated member with a fluid flow channel extending generally axially therewithin and through a distal of said member;
Q said elongated member being generally cylindrical along a substantial portion of its length and terminating in a generally tapered distal end portion having a blunt end edge; and
a substantially cylindrical sheath surrounding said elongated member and being at least coextensive with and spaced 5 apart from said elongated member to protect said member from inadvertent touch contamination.
14. A,lunt-ended cannula device as recited in Claim 13 further including means defining at least two slots opposite one another at the distal end of said sheath.
15. A blunt-ended cannula device as recited in Claim 13 further comprising means defining threads on the interior surface of said sheath.
16. A blunt-ended cannula device in accordance with Claim 13 wherein the interior surface of said sheath is outwardly tapered.

17. A cannula device in accordance with Claim 13 further comprising a generally cylindrical wall extending in the opposite direction for said sheath for receiving the end of a syringe or the like.
18. A blunt cannula device for use with a pre-slit injection site comprising:
elongated member extending from said bases portion, said elongated member having a fluid flow channel defined generally axially therewithin, said elongated member being essentially cylindrical for a substantial portion of the length thereof and terminating in a tapered end portion having a blunt end edge;
a plurality of retaining fingers carried by said base portion, each of said retaining fingers having retention means at one end and gripping means at the other end, said fingers being carried by said base portion intermediate said ends, whereby squeezing of the gripping ends of said fingers spreads of the retention ends of said fingers to allow locking engagement with and release form a pre-slit injection site.
19. In a blood sampling system, an injection site usable with a blunt cannula device comprising:
a housing having an inlet and outlet and defining a fluid channel therebetween;
means defining an access aperture in communication with the fluid channel; and
flexible means carried by said housing for sealing said access aperture, said means having a resealable opening therein and a curved exterior peripheral surface such that a blunt cannula can be sealingly inserted through said opening and placed in fluid flow communication with said channel and such that the blunt cannula can be removed therefrom with said flexible means interacting with said housing so as to reseal said resealable opening.
20. A blunt-ended cannula device for use with a pre-slit injection site in a blood sampling system, said cannula device comprising: an elongated member with a fluid flow channel extending generally axially therewithin and through a distal end of said member;
said elongated member being generally cylindrical along a substantial portion of its length and terminating in a generally tapered distal end portion having a blunt end edge; and
a substantially cylindrical sheath surrounding said elongated member and being at least coextensive with and spaced apart from said elongated member to protect said member from inadvertent touch contamination.
21. A blunt-ended cannula device as recited in Claim 20 further including means defining at least two slots opposite one another at the distal end of said sheath.
22. A blunt-ended cannula device as recited in Claim 20 wherein said sheath freely rotates around said elongated member.

23. A blunt-ended cannula device in accordance with Claim 20 wherein the interior surface of said sheath is outwardly tapered.
24. A cannula device in accordance with Claim 20 further comprising a generally cylindrical wall extending in the opposite direction from said sheath for receiving the end of a syringe or the like.
25. An injection site in accordance with Claim 19, wherein said housing has an inlet at a lower portion of said housing and an outlet at a higher portion of said housing.
26. An adapter for transferring fluid from a blunt-ended cannula and syringe to an evacuated tube, comprising:
a) an injection site having a cylindrical housing and flexible means carried by said housing for sealing one end of said housing, said flexible means having a resealable opening therein and a curved exterior peripheral surface such that the blunt cannula can be sealingly inserted through said opening and placed in fluid flow communication with a needle attached to the other end of said housing, and such that the blunt cannula can be removed therefrom with said flexible means interacting with said housing so as to reseal said resealable opening;
b) a shroud covering said needle and into which an evacuated tube can be inserted when transfering fluid from the syringe to the tube; and
c) an elastomeric sleeve covering said needle.