Claims for Patent: 11,278,494

Summary for Patent: 11,278,494

Title:	Manufacturing of bupivacaine multivesicular liposomes
Abstract:	Embodiments of the present application relate to commercial manufacturing processes for making bupivacaine multivesicular liposomes (MVLs) using independently operating dual tangential flow filtration modules.
Inventor(s):	Hall; Jeffrey S. (San Diego, CA), Turnbull; David J. (San Diego, CA), Grigsby, Jr.; John J. (San Diego, CA), Ardekani; Soroush M. (San Diego, CA), Davis; Paige N. (San Diego, CA), Garcia; Louie D. (San Diego, CA), Kurz; Stephanie M. (San Diego, CA), Los; Kathleen D. A. (San Diego, CA)
Assignee:	Pacira Pharmaceuticals, Inc. (San Diego, CA)
Application Number:	17/156,424
Patent Claims:	1. A composition of bupivacaine encapsulated 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 erucic acid concentration in the composition is about 23 .mu.g/mL or less after the composition is stored at 25.degree. C. for one month. 2. The composition of claim 1, wherein the composition has an initial pH of about 7.4. 3. The composition of claim 2, wherein the composition has a pH of about 7.1 after the composition is stored at 25.degree. C. for one month. 4. The composition of claim 1, wherein the erucic acid concentration in the composition is about 38 .mu.g/mL or less after the composition is stored at 25.degree. C. for two months. 5. The composition of claim 4, wherein the composition has a pH of about 7.1 after the composition is stored at 25.degree. C. for two months. 6. The composition of claim 1, wherein the erucic acid concentration in the composition is about 54 .mu.g/mL or less after the composition is stored at 25.degree. C. for three months. 7. The composition of claim 6, wherein the composition has a pH of about 6.9 after the composition is stored at 25.degree. C. for three months. 8. The composition of claim 1, wherein the erucic acid concentration in the composition is about 99 .mu.g/mL or less after the composition is stored at 25.degree. C. for six months. 9. The composition of claim 8, wherein the composition has a pH of about 6.5 after the composition is stored at 25.degree. C. for six months. 10. The composition of claim 1, wherein the lipid membranes further comprise cholesterol and tricaprylin. 11. The composition of claim 1, wherein the plurality of internal aqueous chambers of the MVLs comprise lysine. 12. The composition of claim 1, wherein the plurality of internal aqueous chambers of the MVLs has an initial pH of about 5.50. 13. The composition of claim 1, wherein the bupivacaine concentration in the composition is from about 11.3 mg/mL to about 17.0 mg/mL. 14. The composition of claim 13, wherein the bupivacaine concentration in the composition is about 13.3 mg/mL. 15. The composition of claim 1, wherein the composition comprises less than 5% by weight unencapsulated bupivacaine. 16. The composition of claim 1, wherein the d.sub.50 of the multivesicular liposomes in the composition is about 27 .mu.m. 17. The composition of claim 1, wherein the percent packed particle volume (% PPV) of the bupivacaine encapsulated multivesicular liposomes in the composition is about 35% to 40%. 18. The composition of claim 1, prepared by a commercial process having a final product volume of about 200 L to about 225 L. 19. A method of treating or ameliorating post surgical pain in a subject in need thereof, comprising administering a composition of claim 1 to the subject. 20. The method of claim 19, wherein the administration is via local infiltration to a surgical site to provide local analgesia. 21. The method of claim 19, wherein the administration is via interscalene brachial plexus nerve block or femoral nerve block to provide regional analgesia. 22. The composition of claim 8, wherein the composition has an initial pH of about 7.4. 23. The composition of claim 8, wherein the lipid membranes further comprise cholesterol and tricaprylin. 24. The composition of claim 8, wherein the plurality of internal aqueous chambers of the MVLs comprise lysine. 25. The composition of claim 8, wherein the plurality of internal aqueous chambers of the MVLs has an initial pH of about 5.50. 26. The composition of claim 8, wherein the bupivacaine concentration in the composition is from about 11.3 mg/mL to about 17.0 mg/mL. 27. The composition of claim 26, wherein the bupivacaine concentration in the composition is about 13.3 mg/mL. 28. The composition of claim 8, wherein the composition comprises less than 5% by weight unencapsulated bupivacaine. 29. The composition of claim 8, wherein the d.sub.50 of the multivesicular liposomes in the composition is about 27 .mu.m. 30. The composition of claim 8, wherein the percent packed particle volume (% PPV) of the bupivacaine encapsulated multivesicular liposomes in the composition is about 35% to 40%. 31. The composition of claim 8, prepared by a commercial process having a final product volume of about 200 L to about 225 L. 32. The method of claim 19, wherein the composition has an initial pH of about 7.4. 33. The method of claim 19, wherein the composition has a pH of about 7.1 after the composition is stored at 25.degree. C. for one month. 34. The method of claim 19, wherein the erucic acid concentration in the composition is about 38 .mu.g/mL or less after the composition is stored at 25.degree. C. for two months. 35. The method of claim 34, wherein the composition has a pH of about 7.1 after the composition is stored at 25.degree. C. for two months. 36. The method of claim 19, wherein the erucic acid concentration in the composition is about 54 .mu.g/mL or less after the composition is stored at 25.degree. C. for three months. 37. The method of claim 36, wherein the composition has a pH of about 6.9 after the composition is stored at 25.degree. C. for three months. 38. The method of claim 19, wherein the erucic acid concentration in the composition is about 99 .mu.g/mL or less after the composition is stored at 25.degree. C. for six months. 39. The method of claim 38, wherein the composition has a pH of about 6.5 after the composition is stored at 25.degree. C. for six months. 40. The method of claim 19, wherein the lipid membranes further comprise cholesterol and tricaprylin. 41. The method of claim 19, wherein the plurality of internal aqueous chambers of the MVLs comprise lysine. 42. The method of claim 19, wherein the plurality of internal aqueous chambers of the MVLs has an initial pH of about 5.50. 43. The method of claim 19, wherein the bupivacaine concentration in the composition is from about 11.3 mg/mL to about 17.0 mg/mL. 44. The method of claim 43, wherein the bupivacaine concentration in the composition is about 13.3 mg/mL. 45. The method of claim 19, wherein the composition comprises less than 5% by weight unencapsulated bupivacaine. 46. The method of claim 19, wherein the d.sub.50 of the multivesicular liposomes in the composition is about 27 .mu.m. 47. The method of claim 19, wherein the percent packed particle volume (% PPV) of the bupivacaine encapsulated multivesicular liposomes in the composition is about 35% to 40%. 48. The method of claim 19, wherein the composition is prepared by a commercial process having a final product volume of about 200 L to about 225 L. 49. The method of claim 38, wherein the composition has an initial pH of about 7.4. 50. The method of claim 38, wherein the lipid membranes further comprise cholesterol and tricaprylin. 51. The method of claim 38, wherein the plurality of internal aqueous chambers of the MVLs comprise lysine. 52. The method of claim 38, wherein the plurality of internal aqueous chambers of the MVLs has an initial pH of about 5.50. 53. The method of claim 38, 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 38, wherein the composition comprises less than 5% by weight unencapsulated bupivacaine. 56. The method of claim 38, wherein the d.sub.50 of the multivesicular liposomes in the composition is about 27 .mu.m. 57. The method of claim 38, 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 38, wherein the composition is prepared by a commercial process having a final product volume of about 200 L to about 225 L. 59. The method of claim 38, wherein the administration is via local infiltration to a surgical site to provide local analgesia. 60. The method of claim 38, wherein the administration is via interscalene brachial plexus nerve block or femoral nerve block to provide regional analgesia.