Claims for Patent: 11,452,691

Summary for Patent: 11,452,691

Title:	Compositions of bupivacaine multivesicular liposomes
Abstract:	Embodiments of the present application relate to compositions of multivesicular liposomes (MVLs) and manufacturing processes for making bupivacaine MVLs.
Inventor(s):	Jeffrey S. Hall, David J. Turnbull, John J. Grigsby, Jr., Soroush M. Ardekani, Kathleen D. A. Los
Assignee:	Pacira Pharmaceuticals Inc
Application Number:	US17/748,933
Patent Claims:	1. Batches comprising compositions of bupivacaine multivesicular liposomes (MVLs), comprising: bupivacaine residing inside a plurality of internal aqueous chambers of the MVLs separated by lipid membranes, wherein the lipid membranes comprise 1, 2-dierucoylphosphatidylcholine (DEPC), 1, 2-dipalmitoyl-sn-glycero-3 phospho-rac-(1-glycerol) (DPPG), and at least one neutral lipid; and an aqueous medium in which the bupivacaine encapsulated MVLs are suspended; wherein the rate of hydrolysis of DEPC as measured by an erucic acid concentration is less than about 18.75 μg/mL/month after the compositions are stored at 25° C. for six months. 2. The batches of claim 1, wherein the rate of hydrolysis of DEPC as measured by the erucic acid concentration is about 15.31 μg/mL/month after the compositions are stored at 25° C. for six months. 3. The batches of claim 1, wherein the compositions have an initial pH of about 7.0 to about 7.4. 4. The batches of claim 1, the compositions have a pH of about 6.5 after the compositions are stored at 25° C. for six months. 5. The batches of claim 1, wherein the at least one neutral lipid of the lipid membranes comprises tricaprylin. 6. The batches of claim 1, wherein the lipid membranes further comprise cholesterol. 7. The batches of claim 1, wherein the bupivacaine concentration in the compositions is from about 11.3 mg/mL to about 17.0 mg/mL. 8. The batches of claim 7, wherein the bupivacaine concentration in the compositions is about 13.3 mg/mL. 9. The batches of claim 1, wherein the compositions comprise less than 5% by weight unencapsulated bupivacaine. 10. The batches of claim 1, wherein the d50 of the MVLs in the compositions is about 24 μm to about 31 μm. 11. The batches of claim 1, wherein the percent packed particle volume (% PPV) of the bupivacaine encapsulated MVLs in the compositions is about 35% to 40%. 12. The batches of claim 1, wherein the internal aqueous chambers of the MVLs comprise lysine, and the encapsulated lysine concentration in the bupivacaine encapsulated MVLs compositions is about 0.03 mg/mL. 13. The batches of claim 1, wherein the DEPC and DPPG in the compositions are in a mass ratio of about 7:1 to about 10:1. 14. The batches of claim 1, wherein the bupivacaine is in a salt form. 15. The batches of claim 14, wherein the bupivacaine is in the form of bupivacaine phosphate. 16. The batches of claim 1, wherein the aqueous medium comprises a saline solution. 17. A method of treating or ameliorating pain in a subject in need thereof, comprising administering a bupivacaine multivesicular liposomes composition of claim 1 to the subject. 18. The method of claim 17, wherein the administration is via local infiltration to a surgical site to provide postsurgical local analgesia. 19. The method of claim 17, wherein the administration is via interscalene brachial plexus nerve block or femoral nerve block to provide postsurgical regional analgesia. 20. The method of claim 17, wherein the composition has a volume of 10 mL or 20 mL for a single-dose administration. 21. The method of claim 17, wherein the composition has an initial pH of about 7.0 to about 7.4. 22. The method of claim 17, wherein the composition has a pH of about 6.5 after the composition is stored at 25° C. for six months. 23. The method of claim 17, wherein the at least one neutral lipid of the lipid membranes comprises tricaprylin. 24. The method of claim 17, wherein the lipid membranes further comprise cholesterol. 25. The method of claim 17, wherein the bupivacaine concentration in the composition is from about 11.3 mg/mL to about 17.0 mg/mL. 26. The method of claim 25, wherein the bupivacaine concentration in the composition is about 13.3 mg/mL. 27. The method of claim 17, wherein the composition comprises less than 5% by weight unencapsulated bupivacaine. 28. The method of claim 17, wherein the d50 of the multivesicular liposomes in the composition is about 24 μm to about 31 μm. 29. The method of claim 17, wherein the percent packed particle volume (% PPV) of the bupivacaine encapsulated multivesicular liposomes in the composition is about 35% to 40%. 30. The method of claim 17, wherein the internal aqueous chambers of the MVLs comprise lysine, and the encapsulated lysine concentration in the bupivacaine encapsulated MVLs composition is about 0.03 mg/mL. 31. The batches of claim 2, wherein the compositions have an initial pH of about 7.0 to about 7.4. 32. The batches of claim 2, the compositions have a pH of about 6.5 after the compositions are stored at 25° C. for six months. 33. The batches of claim 2, wherein the at least one neutral lipid of the lipid membranes comprises tricaprylin. 34. The batches of claim 2, wherein the lipid membranes further comprise cholesterol. 35. The batches of claim 2, wherein the bupivacaine concentration in the compositions is from about 11.3 mg/mL to about 17.0 mg/mL. 36. The batches of claim 35, wherein the bupivacaine concentration in the compositions is about 13.3 mg/mL. 37. The batches of claim 2, wherein the compositions comprise less than 5% by weight unencapsulated bupivacaine. 38. The batches of claim 2, wherein the d50 of the MVLs in the compositions is about 24 μm to about 31 μm. 39. The batches of claim 2, wherein the percent packed particle volume (% PPV) of the bupivacaine encapsulated MVLs in the compositions is about 35% to 40%. 40. The batches of claim 2, wherein the internal aqueous chambers of the MVLs comprise lysine, and the encapsulated lysine concentration in the bupivacaine encapsulated MVLs compositions is about 0.03 mg/mL. 41. The batches of claim 2, wherein the DEPC and DPPG in the compositions are in a mass ratio of about 7:1 to about 10:1. 42. The batches of claim 2, wherein the bupivacaine is in a salt form. 43. The batches of claim 42, wherein the bupivacaine is in the form of bupivacaine phosphate. 44. The batches of claim 2, wherein the aqueous medium comprises a saline solution. 45. A method of treating or ameliorating pain in a subject in need thereof, comprising administering a bupivacaine multivesicular liposomes composition of claim 2 to the subject. 46. The method of claim 45, wherein the administration is via local infiltration to a surgical site to provide postsurgical local analgesia. 47. The method of claim 45, wherein the administration is via interscalene brachial plexus nerve block or femoral nerve block to provide postsurgical regional analgesia. 48. The method of claim 45, wherein the composition has a volume of 10 mL or 20 mL for a single-dose administration. 49. The method of claim 45, wherein the composition has an initial pH of about 7.0 to about 7.4. 50. The method of claim 45, wherein the composition has a pH of about 6.5 after the composition is stored at 25° C. for six months. 51. The method of claim 45, wherein the at least one neutral lipid of the lipid membranes comprises tricaprylin. 52. The method of claim 45, wherein the lipid membranes further comprise cholesterol. 53. The method of claim 45, wherein the bupivacaine concentration in the composition is from about 11.3 mg/mL to about 17.0 mg/mL. 54. The method of claim 53, wherein the bupivacaine concentration in the composition is about 13.3 mg/mL. 55. The method of claim 45, wherein the composition comprises less than 5% by weight unencapsulated bupivacaine. 56. The method of claim 45, wherein the d50 of the multivesicular liposomes in the composition is about 24 μm to about 31 μm. 57. The method of claim 45, wherein the percent packed particle volume (% PPV) of the bupivacaine encapsulated multivesicular liposomes in the composition is about 35% to 40%. 58. The method of claim 45, wherein the internal aqueous chambers of the MVLs comprise lysine, and the encapsulated lysine concentration in the bupivacaine encapsulated MVLs composition is about 0.03 mg/mL.