IP Library › Granted Patent US 10,821,210
Granted Patent B2
US 10,821,210 · App. 14/372,146 · Granted Nov 3, 2020

Injections

Inventor: Bruce Roser (Cambridge, GB)
Assignee: STABLEPHARMA LTD
A61L31/16A61K9/0019A61K9/122A61L31/026A61L31/125A61L31/146A61M5/178A61M5/3129A61L2300/438A61M5/3145
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Quick Facts
Patent No.
US 10,821,210
App. No.
14/372,146
Granted
Nov 3, 2020
Kind
B2
Abstract

A syringe containing a compressible porous matrix, which compressible porous matrix has in it a pharmaceutical in a soluble glass, Methods of producing and using the syringe, and compressible porous matrix inserts for insertion into a syringe barrel are also provided.

Claims (28)

1. A pharmaceutical syringe comprising a syringe barrel comprising an interior syringe barrel wall, a proximal opening configured to receive a plunger in contact with the interior syringe barrel wall, and an integrally formed outlet connectable to a needle, the syringe barrel containing a compressible porous matrix, wherein the compressible porous matrix contains a pharmaceutical suitable for administration into a human patient and wherein the pharmaceutical is in a soluble glass in the compressible porous matrix.

2. The pharmaceutical syringe according to claim 1 , wherein the compressible porous matrix in a non-compressed state occupies at least about 10% of a volume of the syringe barrel.

3. The pharmaceutical syringe according to claim 1 , wherein the compressible porous matrix has a compressibility of about 2:1 or more.

4. The pharmaceutical syringe according to claim 1 , wherein a gap for a passage of air during venting of the syringe is present between the compressible porous matrix and the interior syringe barrel wall.

5. The pharmaceutical syringe according to claim 1 , wherein the compressible porous matrix is in the form of an elongate block.

6. The pharmaceutical syringe according to claim 1 , wherein the compressible porous matrix is in a form of a block having a non-circular cross section.

7. The pharmaceutical syringe according to claim 6 wherein the block has a rectangular cross section.

8. The pharmaceutical syringe according to claim 1 , wherein the compressible porous matrix is a foam, a sponge, or a fibrous body.

9. The pharmaceutical syringe according to claim 8 , wherein the compressible porous matrix is cellulose foam, polyurethane foam, or melamine foam.

10. The pharmaceutical syringe according to claim 1 , wherein the compressible porous matrix has a functional pore size of between:

a) 1 micron and 2 mm;

b) 10 micron and 1 mm; or

c) 10 micron and 100 micron.

11. The pharmaceutical syringe according claim 1 , wherein the compressible porous matrix is hydrophilic for an application of water soluble glassy substances.

12. The pharmaceutical syringe according to claim 1 , wherein the compressible porous matrix is hydrophobic for an application of oil soluble glassy substances.

13. The pharmaceutical syringe according to claim 1 , wherein the pharmaceutical is stabilized in the soluble glass on the compressible porous matrix.

14. The pharmaceutical syringe according to claim 1 , wherein the soluble glass is an amino acid glass, a sugar glass, a hydrophobically modified sugar glass, a carbohydrate glass, or a mixture thereof.

15. The pharmaceutical syringe according to claim 14 wherein the soluable glass is a trehalose glass.

16. The pharmaceutical syringe according to claim 1 , wherein the compressible porous matrix is fixed to a seal of a syringe plunger.

17. The pharmaceutical syringe according to claim 1 wherein the outlet is directly connectable to the needle.

18. The pharmaceutical syringe according to claim 1 further comprising the plunger slideably housed within the barrel, wherein the compressible porous matrix is located between the plunger and the outlet such that partial withdrawal of the plunger to aspirate a carrier liquid into the barrel rehydrates the compressible porous matrix such that the soluble glass containing the pharmaceutical dissolves.

19. The pharmaceutical syringe according to claim 18 wherein movement of the plunger to discharge the carrier liquid in the barrel results in compression of the compressible porous matrix.

20. The pharmaceutical syringe according to claim 19 wherein, when the plunger is fully depressed towards the outlet, the compressible porous matrix is compressed and the carrier liquid in the compressible porous matrix is expelled therefrom and exits the syringe via the outlet.

21. A method of producing a compressible porous matrix insert comprising

contacting a compressible porous matrix with a solution of a glass-forming material, which solution contains a pharmaceutical for delivery into a patient, and

drying the solution to form a glass in the compressible porous matrix, which glass comprises the pharmaceutical, wherein the compressible porous matrix is capable of being placed into a barrel of a pharmaceutical syringe comprising a syringe barrel comprising an interior syringe barrel wall, a proximal opening configured to receive a plunger in contact with the interior syringe barrel wall, and an integrally formed outlet at a distal end of the syringe barrel connectable to a needle.

22. The method according to claim 21 , comprising treating the compressible porous matrix with a blocking agent before contacting the compressible porous matrix with the solution of glass-forming material containing the pharmaceutical.

23. The method according to claim 21 comprising treating the compressible porous matrix with a surfactant.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 22, 2014
From: ROSER, BRUCE
To: STABLEPHARMA LTD
Reel/Frame 033364/0990 →
Priority Claims (1)
GB 1201426.2 · Jan 27, 2012 · national
Continuity (1)
Related Publication 20140350483A1 · Nov 27, 2014