Composite bone graft substitute cement and articles produced therefrom
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
A61K-033/06
B65D-041/00
B65D-047/38
A61K-033/42
A61K-047/00
B65D-001/04
A61K-009/14
B65D-023/04
A61P-019/00
출원번호
US-0220124
(2011-08-29)
등록번호
US-8685465
(2014-04-01)
발명자
/ 주소
Moseley, Jon P.
Carroll, Michael E.
McCanless, Jonathan D.
Schulz, Olaf
Fronk, Andy
출원인 / 주소
Agnovos Healthcare, LLC
대리인 / 주소
Wolf, Greenfield & Sacks, P.C.
인용정보
피인용 횟수 :
1인용 특허 :
195
초록▼
The invention provides a particulate composition adapted for forming a bone graft substitute cement upon mixing with an aqueous solution, including i) a calcium sulfate hemihydrate powder having a bimodal particle distribution and a median particle size of about 5 to about 20 microns, wherein the ca
The invention provides a particulate composition adapted for forming a bone graft substitute cement upon mixing with an aqueous solution, including i) a calcium sulfate hemihydrate powder having a bimodal particle distribution and a median particle size of about 5 to about 20 microns, wherein the calcium sulfate hemihydrate is present at a concentration of at least about 70 weight percent based on the total weight of the particulate composition; ii) a monocalcium phosphate monohydrate powder; and iii) a β-tricalcium phosphate powder having a median particle size of less than about 20 microns. Bone graft substitute cements made therefrom, a bone graft substitute kit comprising the particulate composition, methods of making and using the particulate composition, and articles made from the bone graft substitute cement are also provided.
대표청구항▼
1. A bone graft substitute kit, comprising: i) a multi-chambered vial, the vial having a first chamber containing a first brushite precursor powder and a second chamber containing a second brushite precursor powder, wherein the first chamber is free of the second brushite precursor powder and the se
1. A bone graft substitute kit, comprising: i) a multi-chambered vial, the vial having a first chamber containing a first brushite precursor powder and a second chamber containing a second brushite precursor powder, wherein the first chamber is free of the second brushite precursor powder and the second chamber is free of the first brushite precursor powder, the vial further including a cap for sealing the first chamber from the second chamber to prevent the first brushite precursor powder and the second brushite precursor powder from mixing together in the vial wherein the first brushite precursor powder comprises a first compound which comprises calcium and phosphate and the second brushite precursor powder comprises a second compound which comprises calcium and phosphate, wherein the first compound and the second compound are different compounds;ii) a mixing solution; andiii) a mixing apparatus operatively adapted for mixing the first brushite precursor powder, the second brushite precursor powder and the mixing solution to form a homogenous composition. 2. The bone graft substitute kit of claim 1, wherein the mixing solution is water or an aqueous solution including one or more additives selected from the group consisting of sodium chloride, potassium chloride, sodium sulfate, potassium sulfate, EDTA, ammonium sulfate, ammonium acetate, and sodium acetate. 3. The bone graft substitute kit of claim 1, wherein the first brushite precursor powder is monocalcium phosphate monohydrate powder and the second brushite precursor powder is β-tricalcium phosphate powder, and wherein at least one of the first and second chambers further includes a component selected from the group consisting of calcium sulfate hemihydrate powder, accelerant adapted for accelerating the conversion of calcium sulfate hemihydrate to calcium sulfate dihydrate, β-tricalcium phosphate granules, and mixtures of any of the foregoing. 4. The bone graft substitute kit of claim 3, wherein the calcium sulfate hemihydrate powder has a bimodal particle distribution comprising about 30 to about 60 volume percent of particles having a mode of about 1.0 to about 3.0 microns and about 40 to about 70 volume percent of particles having a mode of about 20 to about 30 microns, based on the total volume of the calcium sulfate hemihydrate powder. 5. The bone graft substitute kit of claim 3, wherein the β-tricalcium phosphate powder has a bimodal particle size distribution comprising about 30 to about 70 volume percent of particles having a mode of about 2.0 to about 6.0 microns and about 30 to about 70 volume percent of particles having a mode of about 40 to about 70 microns based on the total volume of the β-tricalcium phosphate powder. 6. The bone graft substitute kit of claim 3, wherein the β-tricalcium phosphate powder has a bimodal particle size distribution comprising about 50 to about 65 volume percent of particles having a mode of about 4.0 to about 5.5 microns and about 35 to about 50 volume percent of particles having a mode of about 60 to about 70 microns based on the total volume of the β-tricalcium phosphate powder. 7. The bone graft substitute kit of claim 3, wherein the accelerant is selected from the group consisting of calcium sulfate dihydrate particles, potassium sulfate particles, and sodium sulfate particles. 8. The bone graft substitute kit of claim 7, wherein the accelerant is coated with sucrose. 9. The bone graft substitute kit of claim 3, wherein the second chamber includes a mixture of β-tricalcium phosphate powder, calcium sulfate hemihydrate powder, accelerant adapted for accelerating the conversion of calcium sulfate hemihydrate to calcium sulfate dihydrate, and β-tricalcium phosphate granules. 10. The bone graft substitute kit of claim 9, wherein the accelerant is selected from the group consisting of calcium sulfate dihydrate particles, potassium sulfate particles, and sodium sulfate particles. 11. The bone graft substitute kit of claim 10, wherein the accelerant is coated with sucrose. 12. The bone graft substitute kit of claim 9, wherein the calcium sulfate hemihydrate powder has a bimodal particle distribution comprising about 30 to about 60 volume percent of particles having a mode of about 1.0 to about 3.0 microns and about 40 to about 70 volume percent of particles having a mode of about 20 to about 30 microns, based on the total volume of the calcium sulfate hemihydrate powder. 13. The bone graft substitute kit of claim 9, wherein the β-tricalcium phosphate powder has a bimodal particle size distribution comprising about 30 to about 70 volume percent of particles having a mode of about 2.0 to about 6.0 microns and about 30 to about 70 volume percent of particles having a mode of about 40 to about 70 microns based on the total volume of the β-tricalcium phosphate powder. 14. The bone graft substitute kit of claim 1, wherein the mixing solution includes a carboxylic acid in free acid or neutralized salt form. 15. The bone graft substitute kit of claim 14, wherein the neutralized salt is an alkali metal salt. 16. The bone graft substitute kit of claim 14, wherein the carboxylic acid is a neutralized salt selected from the group consisting of sodium glycolate, potassium glycolate, sodium lactate, and potassium lactate. 17. The bone graft substitute kit of claim 1, wherein at least one of the first chamber and the second chamber further includes demineralized bone matrix. 18. The bone graft substitute kit of claim 1, wherein the mixing apparatus is a vacuum mixing apparatus. 19. The bone graft substitute kit of claim 1, wherein the multi-chambered vial includes an open end and the mixing apparatus includes a mixing container, and wherein the open end of the multi-chambered vial is dimensioned for insertion into the mixing container of the mixing apparatus. 20. The bone graft substitute kit of claim 1, wherein the mixing apparatus includes a syringe port adapted for connection to a syringe. 21. The bone graft substitute kit of claim 20, further comprising a threaded extruder adapted for forcing a bone graft substitute composition from the mixing apparatus into a syringe through the syringe port. 22. The bone graft substitute kit of claim 1, wherein the multi-chambered vial has an open end sized to fit into an open end of the mixing apparatus to facilitate transfer of the powder material into the mixing apparatus. 23. The bone graft substitute kit of claim 1, wherein the mixing apparatus includes a removable top, a container body adapted for connection to the removable top a syringe port, and a rotatable mixing element adapted for placement within the container body, wherein the removable top includes a rotatable handle adapted for connection to the rotatable mixing element and a vacuum port. 24. The bone graft substitute kit of claim 1, further comprising a written instruction set describing a method of using the kit. 25. The bone graft substitute kit of claim 1, wherein at least a portion of the kit is sterilized by exposure to gamma radiation. 26. The bone graft substitute kit of claim 1, wherein the vial includes a cap to seal an opening to the first chamber and an opening to the second chamber. 27. A bone graft substitute kit, comprising: i) a multi-chambered vial, the vial including a first chamber containing a first powder and a second chamber containing a second powder wherein the first powder is monocalcium phosphate monohydrate powder free of β-tricalcium phosphate powder, and the second powder is β-tricalcium phosphate powder free of monocalcium phosphate monohydrate powder, wherein at least one of the first chamber and the second chamber further includes a component selected from the group consisting of calcium sulfate hemihydrate powder, accelerant adapted for accelerating the conversion of calcium sulfate hemihydrate to calcium sulfate dihydrate, β-tricalcium phosphate granules, and mixtures of any of the foregoing, wherein the vial includes a cap for sealing the first chamber from the second chamber to prevent mixing in the vial of the first powder and the second powder;ii) an aqueous mixing solution selected from water or a solution including one or more additives selected from the group consisting of sodium chloride, potassium chloride, sodium sulfate, potassium sulfate, EDTA, ammonium sulfate, ammonium acetate, and sodium acetate; andiii) a mixing apparatus operatively adapted for mixing the first powder, the second powder, and the aqueous mixing solution to form a homogenous composition. 28. The bone graft substitute kit of claim 27, wherein the second powder is a mixture of β-tricalcium phosphate powder, calcium sulfate hemihydrate powder, accelerant adapted for accelerating the conversion of calcium sulfate hemihydrate to calcium sulfate dihydrate, and β-tricalcium phosphate granules. 29. The bone graft substitute kit of claim 27, wherein the mixing solution includes a carboxylic acid in free acid or neutralized salt form. 30. The bone graft substitute kit of claim 29, wherein the carboxylic acid is a neutralized salt selected from the group consisting of sodium glycolate, potassium glycolate, sodium lactate, and potassium lactate. 31. The bone graft substitute kit of claim 27, wherein at least one of the first and second chambers further includes demineralized bone matrix. 32. The bone graft substitute kit of claim 27, wherein the multi-chambered vial includes an open end and the mixing apparatus includes a mixing container, and wherein the open end of the multi-chambered vial is dimensioned for insertion into the mixing container of the mixing apparatus. 33. The bone graft substitute kit of claim 27, wherein the mixing apparatus includes a syringe port adapted for connection to a syringe. 34. The bone graft substitute kit of claim 33, further comprising a threaded extruder adapted for forcing a bone graft substitute composition from the mixing apparatus into a syringe through the syringe port. 35. The bone graft substitute kit of claim 27, wherein the multi-chambered vial has an open end sized to fit into an open end of the mixing apparatus to facilitate transfer of the powder material into the mixing apparatus. 36. The bone graft substitute kit of claim 27, wherein the mixing apparatus includes a removable top, a container body adapted for connection to the removable top, a syringe port, and a rotatable mixing element adapted for placement within the container body, wherein the removable top includes a rotatable handle adapted for connection to the rotatable mixing element and a vacuum port. 37. The bone graft substitute kit of claim 27, further comprising a written instruction set describing a method of using the kit. 38. The bone graft substitute kit of claim 27, wherein at least a portion of the kit is sterilized by exposure to gamma radiation. 39. The bone graft substitute kit of claim 27, wherein the vial includes a cap to seal an opening to the first chamber and an opening to the second chamber. 40. A bone graft substitute kit, comprising: i) a multi-chambered vial, the vial including a first chamber containing a first powder and a second chamber containing a second powder wherein the first powder consists of monocalcium phosphate monohydrate powder and the second powder consists of a mixture of β-tricalcium phosphate powder, calcium sulfate hemihydrate powder, accelerant adapted for accelerating the conversion of calcium sulfate hemihydrate to calcium sulfate dihydrate, and β-tricalcium phosphate granules, the vial including a cap for sealing the first chamber and the second chamber to prevent mixing in the vial of the first powder and the second powder;ii) an aqueous mixing solution selected from water or a solution including one or more additives selected from the group consisting of sodium chloride, potassium chloride, sodium sulfate, potassium sulfate, EDTA, ammonium sulfate, ammonium acetate, and sodium acetate, and wherein the mixing solution further comprises a carboxylic acid in free acid or neutralized salt form; andiii) a mixing apparatus operatively adapted for mixing powder and liquid components to form a homogenous composition. 41. The bone graft substitute kit of claim 40, wherein the vial includes a cap to seal an opening to the first chamber and an opening to the second chamber.
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