SYRINGE ADAPTOR FOR USE WITH A WET/DRY MIXING VIAL

• US 3,796,218 A
• Filed: 03/28/1972
• Issued: 03/12/1974
• Est. Priority Date: 03/28/1972
• Status: Expired due to Term

• Current Assignee: George K. Burke, Kenneth Raines
• Original Assignee: George K. Burke, Kenneth Raines
• Inventors: Burke, George K., Raines, Kenneth
• Primary Examiner(s): Gaudet, Richard A.
• Assistant Examiner(s): McGowan, J. C.
• Application Number:
  US05/238,831
• Time in Patent Office: 714 Days
• Field of Search: 128/215,214R,214.2,214.4,215,218M,214C,214D,218N,221,341,343,239,272 222/80-82 141/19,25,329
• US Class Current: 604/411
• CPC Class Codes: A61J 1/201 having one piercing end
• CPC Class Codes: A61J 1/2013 having two piercing ends
• CPC Class Codes: A61J 1/2041 having removable plugs
• CPC Class Codes: A61J 1/2065 having aligning and guiding means
• CPC Class Codes: A61J 1/2093 Containers having several compartments for products to be mixed
• CPC Class Codes: A61J 1/2096 Combination of a vial and a syringe for transferring or mixing their contents
• CPC Class Codes: A61M 5/31596 comprising means for injection of two or more media, e.g. by mixing

Abstract

A syringe adaptor for use with a wet/dry mixing vial having two chambers therein separated from one another by a displaceable plug and each containing a different material to be admixed with the other, comprising an elongate relatively rigid piercing tip having a pointed end and a tubular base, an open end on the tubular base for attachment of the adaptor to a syringe or the like, and a finger grip on the tubular base for grasping the adaptor to insert the piercing tip into the vial. The length of the piercing tip is such as to engage and displace a plug within the vial when the tip is inserted to thus enable said materials to be admixed, and a passageway is in the tubular base for withdrawing the admixed materials from the vial and into a syringe attached to the adaptor.

Claims

1. A syringe adaptor for use with a wet/dry mixing vial having two chambers therein separated from one another by a displaceable plug and each containing a different material to be admixed with the other, comprising an elongate tubular body open at one end, means on said open end to receive and hold a cannula therein, a substantially conically shaped end wall closing the other end of the body, an axially extending opening through said end wall communicating with the hollow interior of the body, an elongate, solid piercing tip integral at one end thereof with said end wall and extending axially outwardly therefrom to a point at the other end thereof, a plurAlity of axially extending, circumferentially spaced reinforcing ribs on said piercing tip and tapering inwardly from said end wall toward said point, and radially outwardly extending finger grip means on said tubular body between the ends thereof.

2. A syringe adaptor as in claim 1, wherein the adaptor is made of white polypropylene.

3. A syringe adaptor as in claim 1, wherein said tubular body is of substantially the same diameter as the base of the tip and an axial bore extends from within the base in communication with the passageway through the rearward end of the body.

4. A syringe adaptor as in claim 1, wherein the open end of the body is diametrically enlarged for gripping engagement with a syringe or the like having a cannula thereon to attach the adaptor to the syringe with the cannula extending axially into said axial bore to adjacent the tip.

5. A syringe adaptor as in claim 4, wherein a diametrically enlarged annular flange is on said body and serves as a stop and finger engaging means to facilitate insertion of the tip into a vial.

6. A syringe adaptor as in claim 5, wherein a plurality of axially extending circumferentially spaced reinforcing ribs are on the tubular body.

7. A syringe adaptor as in claim 4, wherein an annular sealing ring is in a groove in the enlarged portion of said body to effect a seal between said body and a syringe to which the adaptor is attached and thus prevent liquid entering said hollow interior of said body from displacing air therefrom.

8. A syringe adaptor as in claim 4, wherein a substantially cup-shaped rubber insert is fixed in said hollow interior of said body intermediate the ends thereof, said insert being adapted to be pierced by a cannula extended into said hollow interior and to effect a seal therewith to thus prevent liquid entering said hollow interior of said body from displacing air therefrom.

9. A syringe adaptor as in claim 1, wherein the reinforcing ribs on the tip are tapered toward the point thereof and terminate short of the point.

10. A syringe adaptor as in claim 1, wherein said finger grip means comprises a cup-shaped tubular body extending axially rearwardly from adjacent the periphery of a diametrically enlarged annular flange on the body adjacent the tip, said cup-shaped tubular body being of larger diameter than the elongate body.

11. A syringe adaptor as in claim 10, wherein said open end of said elongate body extends co-axially rearwardly within the tubular body, said elongate body being of substantially constant diameter, and said projection being shorter in length than the tubular body and having an open rearward end.

12. A syringe adaptor as in claim 11, wherein a sleeve stopper is on the open end of the elongate body effecting a seal therewith.

13. A syringe adaptor as in claim 12, wherein said sleeve stopper has a thickened end wall and a pair of radially spaced, axially forwardly extending cylindrical walls, said open end of said elongate body being received therebetween with the thickened wall positioned over the open end of the body.

14. A syringe adaptor as in claim 13, wherein an annular rib is on the rearward surface of said thickened end wall defining an insertion site for a cannula on a syringe or the like, the length of the elongate body, and the combined thickness of the thickened end wall and rib being such as to space the end of the cannula from the conically shaped end wall of the tip.

15. A syringe adaptor as in claim 14, wherein a tubular axial extension is connected at one end thereof to the rearward end of the cup-shaped tubular body and extends rearwardly therefrom.

16. A syringe adaptor as in claim 15, wherein the other end of the axial extension has means for receiving and gripping the end of a syringe or the like.

17. A syringe adaptor as in claim 16, wherein said one end of said extension has a diametrically enlarged annular flange thereon, the marginal peripheral portion of said flange being secured and sealed to the reaRward end portion of said cup-shaped tubular body.

18. A syringe adaptor as in claim 17, wherein said flange has a forwardly axially extending annular wall thereon spaced radially inwardly from the periphery thereof and fitted and sealed within the rearward end of said cup-shaped tubular body.

19. A syringe adaptor as in claim 18, wherein the combined lengths of the axial extension, the cup-shaped tubular body, and the elongate body are such as to space the end of a cannula on the end of a syringe or the like attached to the adaptor from the conically shaped end wall of piercing tip.