POLYMERIC TREATMENT COMPOSITIONS

• US 20160243157A1
• Filed: 04/29/2016
• Published: 08/25/2016
• Est. Priority Date: 06/14/2012
• Status: Active Grant

• Current Assignee: Microvention Incorporated (Terumo Corporation)
• Original Assignee: Microvention Incorporated (Terumo Corporation)
• Inventors: Cruise, Gregory M., Constant, Michael J., Garretson, Joshua
• Granted Patent: US 9,937,201 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: A61K 31/78 of acrylic acid or derivatives thereof
• CPC Class Codes: A61K 31/785 Polymers containing nitrogen
• CPC Class Codes: A61K 47/32 Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds, e.g. carbomers , poly(meth)acrylates, or polyvinyl pyrrolidone
• CPC Class Codes: A61K 9/0024 Solid, semi-solid or solidifying implants, which are implanted or injected in body tissue compositions for intravenous administration, normal injectable solutions or dispersions for, e.g. subcutaneous administration A61K9/0019; brain implants A61K9/0085; (coated) prostheses, catheters or stents A61L
• CPC Class Codes: A61L 24/0089 containing inorganic fillers not covered by groups A61L24/0078 or A61L24/0084
• CPC Class Codes: A61L 24/046 obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds A61L24/043 takes precedence
• CPC Class Codes: A61L 2430/36 for embolization or occlusion, e.g. vaso-occlusive compositions or devices
• CPC Class Codes: A61P 9/00 Drugs for disorders of the cardiovascular system

Abstract

Compositions are described comprising a polymer; a non-physiological pH solution; and a visualization agent; wherein the polymer is soluble in the non-physiological pH solution and insoluble at a physiological pH. Methods of forming the solutions and polymers are disclosed as well as methods of therapeutic use.

Claims

1. A method of delivering a composition comprising:

injecting through a delivery device into a location with physiological pH environment a liquid embolic composition comprising a polymer, a non-physiological pH solution and a visualization agent,

wherein the polymer precipitates when it reaches the physiological pH.

2. The method of claim 1, wherein the visualization agent is a particulate.

3. The method of claim 1, wherein the visualization agent has a concentration of about 5% to about 65%.

4. The method of claim 1, wherein the visualization agent is an iodinated compound or barium sulfate.

5. The method of claim 1, wherein the polymer is a reaction product of two different monomers.

6. The method of claim 1, wherein the polymer is a reaction product of three different monomers.

7. The method of claim 1, wherein the non-physiological pH solution is aqueous.

8. The method of claim 1, wherein the non-physiological pH solution has a pH of less than about 5.

9. The method of claim 1, wherein the non-physiological pH solution has a pH of greater than about 8.

10. The method of claim 1, wherein the polymer has a concentration of about 1% w/w to about 35% w/w.

11. A method of treating a vascular disorder comprising

providing a liquid embolic composition comprising a biocompatible polymer, a non-physiological pH solution and a visualization agent, wherein the biocompatible polymer is soluble in the non-physiological pH solution and insoluble in a physiological pH;

inserting a delivery device into a vessel;

guiding the delivery device to an area in need of treatment wherein the area has a physiological pH;

injecting the liquid embolic polymer composition through the delivery device into the vessel at the area in need of treatment thereby immediately precipitating the polymer and forming a solid polymeric mass; and

treating the vascular condition.

12. The method of claim 11, wherein the visualization agent is a particulate.

13. The method of claim 11, wherein the visualization agent has a concentration of about 5% to about 65%.

14. The method of claim 11, wherein the visualization agent is an iodinated compound or barium sulfate.

15. The method of claim 11, wherein the biocompatible polymer is a reaction product of two different monomers.

16. The method of claim 11, wherein the biocompatible polymer is a reaction product of three different monomers.

17. The method of claim 11, wherein the non-physiological pH solution is aqueous.

18. The method of claim 11, wherein the non-physiological pH solution has a pH of less than about 5.

19. The method of claim 11, wherein the non-physiological pH solution has a pH of greater than about 8.

20. The method of claim 11, wherein the biocompatible polymer has a concentration of about 1% w/w to about 35% w/w.