Hemostatic compositions
The invention relates to a hemostatic composition in powder form comprising collagen of the fibrillar type comprising a content of fibrous collagen and/or fibrillar collagen of at least 70% by weight relative to the total weight of the collagen, and at least one monosaccharide, and optionally, at least one compound selected from coagulation factors and glycosaminoglycans. The invention further relates to a method for preparing such composition, and to a unit comprising such composition and a spraying device.
1. A hemostatic composition in powder form comprising:
collagen of the fibrillar type comprising a content of fibrous collagen and/or fibrillar collagen of at least 70% by weight relative to the total weight of the collagen, said collagen being in a content ranging from 70% to 99% by weight relative to the total weight of the composition,
at least one monosaccharide in a content ranging from 1% to 12.5% by weight relative to the total weight of the composition, and
at least one coagulation factor in a content ranging from 0.01 IU/mg to 20 IU/mg of the composition.
2. The composition of claim 1 , wherein said composition comprises a collagen content ranging from 75% to 96% by weight relative to the total weight of the composition.
3. The composition of claim 1 , wherein said composition comprises a collagen content ranging from 77% to 93% by weight relative to the total weight of the composition.
4. The composition of claim 1 , wherein said composition comprises a collagen content ranging from 80% to 90% by weight relative to the total weight of the composition.
5. The composition of claim 1 , wherein said composition comprises a monosaccharide content ranging from 1.5% to 10% by weight relative to the total weight of the composition.
6. The composition of claim 1 , wherein said composition comprises a monosaccharide content ranging from 2% to 8% by weight relative to the total weight of the composition.
7. The composition of claim 1 , wherein said composition comprises a monosaccharide content ranging from 2.5% to 7.5% by weight relative to the total weight of the composition.
8. The composition of claim 1 , wherein said composition comprises a collagen/monosaccharide weight ratio ranging from 10 to 50.
9. The composition of claim 1 , wherein the collagen comprises a content of fibrous collagen and/or fibrillar collagen ranging from 85% to 95% by weight relative to the total weight of the collagen.
10. The composition of claim 1 , wherein said composition further comprises a glycosaminoglycan in a content ranging from 2% to 25% by weight relative to the total weight of the composition.
11. The composition of claim 10 , wherein the glycosaminoglycan is chosen among chondroitin sulfate, dermatan sulfate, hyaluronic acid and mixtures thereof.
12. The composition of claim 1 , wherein said composition further comprises a glycosaminoglycan, wherein the collagen/total carbohydrate compounds weight ratio ranging from 2 to 40, wherein the weight of the total carbohydrate compounds is the sum of the weight of the monosaccharide(s) and the weight of the glycosaminoglycan(s).
13. The composition of claim 1 , wherein said composition comprises a coagulation factor in a content ranging from 0.05 IU/mg to 10 IU/mg of the composition.
14. The composition of claim 1 , wherein said composition comprises a coagulation factor in a content ranging from 0.1 IU/mg to 5 IU/mg of the composition.
15. The composition of claim 1 , wherein said composition comprises a coagulation factor in a content ranging from 0.2 IU/mg to 2 IU/mg of the composition.
16. The composition of claim 1 , wherein the at least one coagulation factor is thrombin.
17. The composition of claim 1 , wherein said composition has a tapped density greater than 0.4 g/mL.
18. The composition of claim 1 , wherein said composition comprises at least 50% by weight of particles whose size is between 200 μm and 400 μm.
19. The composition of claim 1 , wherein said composition comprises a collagen/monosaccharide weight ratio of 19.
20. A kit comprising:
the composition of claim 1 , and
a spraying device.
21. A method for preparing a hemostatic composition according to claim 1 , comprising at least the following steps:
a) formation of an aqueous suspension comprising a collagen of fibrillar type having a content of fibrous collagen and/or fibrillar collagen of at least 70% by weight relative to the total weight of the collagen, and at least one monosaccharide, with a collagen content ranging from 70% to 99% by weight relative to the total weight of the composition and a monosaccharide content ranging from 1% to 12.5% by weight relative to the total weight of the composition,
b) recovery of the product in the form of precipitate, paste or gel,
c) drying of the product,
d) grinding of the product to the desired granulometry,
e) adding at least one coagulation factor in a content ranging from 0.01 IU/mg to 20 IU/mg.
22. The method of claim 21 , wherein in the step b) the recovery of the product is carried by centrifugation or decantation.
23. The method of claim 21 , wherein the collagen used in step a) is obtained by basic extraction.
24. The method of claim 21 , wherein the coagulation factor is thrombin.
25. The method of claim 21 , wherein in step e) is further added at least one glycosaminoglycan.
26. A method of treating a patient with a wound, comprising:
administering the composition of claim 1 to the patient in need thereof.