Syringe device

• US 20020022804A1
• Filed: 09/10/2001
• Published: 02/21/2002
• Est. Priority Date: 03/10/1999
• Status: Abandoned Application

• Current Assignee: British Technology Group Inter-Corporate Licensing Limited (Invesco Limited)
• Original Assignee: British Technology Group Inter-Corporate Licensing Limited (Invesco Limited)
• Inventors: Connolly, Eric, Hewlett, Timothy Paul, Maskell, William John, OʼBrien, Gerard Michael
• Application Number:
  US09/948,704
• Publication Number:
  US 20020022804A1
• Time in Patent Office: Days
• US Class Current: 604/201
• CPC Class Codes: A61J 1/201 having one piercing end
• CPC Class Codes: A61J 1/2055 having gripping means
• CPC Class Codes: A61J 1/2089 Containers or vials which are to be joined to each other in order to mix their contents combinations of vial and syringe for mixing their contents A61J1/2096
• CPC Class Codes: A61J 1/2096 Combination of a vial and a syringe for transferring or mixing their contents
• CPC Class Codes: A61M 2005/3104 Caps for syringes without needle
• CPC Class Codes: A61M 5/1782 Devices aiding filling of syringes in situ combination of a vial and a syringe for transferring or mixing their contents A61J1/2096, filling of medical containers in general B65B3/003
• CPC Class Codes: A61M 5/288 by piercing without internal pressure increase A61M5/283 takes precedence
• CPC Class Codes: A61M 5/31596 comprising means for injection of two or more media, e.g. by mixing
• CPC Class Codes: A61P 31/10 Antimycotics

Abstract

There is provided a syringe comprising a barrel having inner walls defining a compartment in the barrel, a closable nozzle at the base of the barrel and a plunger movable longitudinally within the barrel compartment. The plunger has inner walls defining a chamber suitable to receive a vial. A hollow needle extends through the plunger to enable fluid communication between the plunger chamber and barrel compartment. A compressible and puncturable sealing element within the plunger chamber provides a sterile seal for the needle and barrel compartment.

Claims

1. A syringe comprising:

a barrel having inner walls defining a compartment in the barrel;

a closable nozzle at the base of the barrel;

a plunger movable longitudinally within said barrel compartment;

said plunger having inner walls defining a chamber suitable to receive a vial;

a hollow needle extending through the plunger to enable fluid communication between said plunger chamber and the barrel compartment; and

a compressible and puncturable sealing element within the plunger chamber to provide a sterile seal for the needle and the barrel compartment.

2. A syringe according to claim 1 wherein the base of the barrel is provided with a projection extending beyond the end of the closable nozzle.

3. A syringe according to claim 2 wherein said projection is an elongate rim around the circumference of the base of the syringe.

4. A syringe according to claim 3 wherein said elongate rim is unitary with the syringe body.

5. A syringe according to any of claims 1 to 4 wherein the sealing element is a substantially cylindrical rubber diaphragm which adheres to the base of the plunger and forms a sleeve around the hollow needle.

6. A syringe according to any of claims 1 to 5 wherein the hollow needle comprises a metal.

7. A syringe according to claim 6 wherein the metal is steel.

8. A syringe according to any of claims 1 to 7 wherein the closable nozzle comprises a luer taper cap.

9. A syringe according to any of claims 1 to 8 additionally comprising reversible retention means to retain the plunger at or substantially next to the base of the barrel.

10. A syringe according to claim 9 wherein said reversible retention means comprise a ratchet mechanism.

11. A syringe according to claim 9 wherein said reversible retention means comprise a latching mechanism.

12. A syringe according to any of claims 1 to 11 additionally comprising a vial having a piercable end.

13. A syringe according to claim 12 additionally comprising a second reversible retention means to retain the vial inside the plunger chamber after piercing.

14. A syringe according to claim 13 wherein the second reversible retention means is attachable to the inner wall of the plunger chamber.

15. A syringe according to either of claims 13 wherein the second reversible retention means is mouldable into the inner wall of the plunger chamber.

16. A syringe according to any of claims 13 to 15 wherein the second reversible retention means comprises clip beads.

17. A syringe according to any of claims 1 to 16 wherein the barrel compartment contains a liquid diluent.

18. A syringe according to claim 17 wherein said liquid diluent is sterilised water.

19. A syringe according to either of claims 17 and 18 wherein the liquid diluent contains an excipient.

20. A syringe according to claim 19 wherein said excipient comprises a pharmaceutically acceptable salt or buffer.

21. A syringe according to any of claims 1 to 20 wherein the barrel compartment contains a medicinal product.

22. A syringe according to any of claims 12 to 20 wherein the vial contains a medicinal product.

23. A syringe according to either of claims 21 and 22 wherein the medicinal product is a drug in powder form.

24. A syringe according to claim 23 wherein the drug is cephalosporin.

25. Use of a syringe according to any of claims 1 to 24 for dispensing medicinal product.

27. Kit of parts according to claim 26 wherein the syringe contains liquid diluent.

26. Kit of parts comprising a syringe according to any of claims I to 11 and a vial having a piercable end.

28. Kit of parts according to either of claims 26 and 27 wherein the vial contains a medicinal product.