Process for making dry and stable hemostatic compositions
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
A61K-009/16
A61K-038/48
B67C-003/22
A61K-009/14
A61L-026/00
출원번호
US-0150902
(2011-06-01)
등록번호
US-8940335
(2015-01-27)
발명자
/ 주소
Goessl, Andreas
출원인 / 주소
Baxter International Inc.
대리인 / 주소
Kilpatrick Townsend & Stockton LLP
인용정보
피인용 횟수 :
0인용 특허 :
134
초록▼
Described is a process for making a dry and stable hemostatic composition, said process comprising a) providing a dry granular preparation of a biocompatible polymer suitable for use in hemostasis,b) coating the granules in said dry granular preparation with a preparation of a coagulation inducing a
Described is a process for making a dry and stable hemostatic composition, said process comprising a) providing a dry granular preparation of a biocompatible polymer suitable for use in hemostasis,b) coating the granules in said dry granular preparation with a preparation of a coagulation inducing agent, thereby obtaining coagulation inducing agent coated polymer granules,c) filling said coagulation inducing agent coated polymer granules into a final container,d) finishing the final container to a storable pharmaceutical device containing said coagulation inducing agent coated polymer granules as a dry and stable hemostatic composition.
대표청구항▼
1. A process for making a dry and stable hemostatic composition, said process comprising: a) providing a dry granular preparation of a biocompatible polymer suitable for use in hemostasis, wherein the biocompatible polymer suitable for use in hemostasis contains a cross-linked gelatin;b) coating the
1. A process for making a dry and stable hemostatic composition, said process comprising: a) providing a dry granular preparation of a biocompatible polymer suitable for use in hemostasis, wherein the biocompatible polymer suitable for use in hemostasis contains a cross-linked gelatin;b) coating the granules in said dry granular preparation with a preparation of a coagulation inducing agent, thereby obtaining coagulation inducing agent coated polymer granules, wherein: said coagulation inducing agent preparation is a thrombin solution, andonly an outer layer of the granules swells and soaks up at least some of the thrombin solution upon coating the granules with the preparation of the coagulation inducing agent;c) filling said coagulation inducing agent coated polymer granules into a final container; andd) finishing the final container to a storable pharmaceutical device containing said coagulation inducing agent coated polymer granules as a dry and stable hemostatic composition, wherein the hemostatic composition has a moisture content below 5%. 2. A process according to claim 1, wherein step b) is performed by a fluid bed process. 3. A process according to claim 1, wherein step d) comprises an ethylene oxide sterilization step. 4. A process according to claim 1, wherein said coagulation inducing agent preparation is a solution containing thrombin in the range of 10 to 10,000 I.U. 5. A process according to claim 1, wherein said coagulation inducing agent preparation is a solution further comprising NaCl and CaCl2. 6. A process according to claim 1, wherein step b) is performed as Wurster coating process. 7. A process according to claim 6, wherein the Wurster coating process is carried out using nitrogen as process gas. 8. A process according to claim 1, wherein a syringe is used as said final container. 9. A process according to claim 8, wherein said syringe is a syringe finished together with a diluent syringe with a pharmaceutically acceptable diluent for reconstituting said dry and stable hemostatic composition. 10. A process according to claim 1, wherein said thrombin solution comprises human thrombin. 11. A process according to claim 1, wherein said biocompatible polymer suitable for use in hemostasis is a granular material. 12. A process according to claim 1, wherein said final container further contains an amount of a stabilizer effective to inhibit modification of the polymer when exposed to sterilizing radiation, and wherein the stabilizer comprises a member selected from the group consisting of ascorbic acid, sodium ascorbate, other salts of ascorbic acid, and an antioxidant. 13. A process according to claim 1, wherein the hemostatic composition in step d) has a moisture content below 1%. 14. A process according to claim 1, wherein the hemostatic composition in step d) has a moisture content below 0.5%. 15. A process according to claim 1, wherein the hemostatic composition in step d) has a moisture content below 0.1%. 16. A process according to claim 1, wherein the biocompatible polymer comprises pellets with a mean particle diameter of 10 to 1000 μm. 17. A process according to claim 1, wherein the biocompatible polymer comprises pellets with a mean particle diameter of 300 to 500 μm. 18. A process according to claim 1, wherein the thrombin solution consists of a thrombin, one or more salts, one or more proteins, mannitol, and water. 19. A process according to claim 1, wherein the thrombin solution consists of a thrombin, one or more salts, mannitol, and water.
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