Bone treatment systems and methods
First Claim
Patent Images
1. A bone cement composition, comprising:
- a liquid component and a non-liquid component that, upon mixing, provide a polymerizable bone cement composition, the liquid component comprising at least one monomer and the non-liquid component comprising at least a polymer and an initiator;
wherein the non-liquid component is configured to provide controlled differential exposure of the initiator to the liquid monomer so as to control the viscosity of the bone cement composition and further comprises;
a first volume of polymer particles having a mean diameter less than 100 μ
m and on the basis of the total weight of the first volume of polymer particles, greater than or equal to 1.1 wt. % of the initiator being contained within the first volume;
a second volume of polymer particles having a mean diameter greater than 100 μ
m and on the basis of the total weight of the second volume of polymer particles, greater than or equal to 0.9 wt. % of the initiator being contained within the second volume; and
a third volume of polymer particles having a mean diameter less than 100 μ
m and on the basis of the total weight of the third volume of polymer particles, wherein 0-1.1 wt. % of the initiator is contained within the third volume,wherein the wt. % of the initiator is different in each of the first, second, and third volumes of polymer particles.
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Abstract
The present disclosure relates to bone cement formulations that have an extended working time for use in vertebroplasty procedures and other osteoplasty procedures together with cement injectors that include energy delivery systems for on-demand control of cement viscosity and flow parameters. The bone cement formulations may include a liquid component having at least one monomer and a non-liquid component including polymer particles and benzoyl peroxide (BPO). The non-liquid component may be further configured to allow controlled exposure of the BPO to the liquid monomer so as to enable control of the viscosity of the bone cement composition.
231 Citations
40 Claims
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1. A bone cement composition, comprising:
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a liquid component and a non-liquid component that, upon mixing, provide a polymerizable bone cement composition, the liquid component comprising at least one monomer and the non-liquid component comprising at least a polymer and an initiator; wherein the non-liquid component is configured to provide controlled differential exposure of the initiator to the liquid monomer so as to control the viscosity of the bone cement composition and further comprises; a first volume of polymer particles having a mean diameter less than 100 μ
m and on the basis of the total weight of the first volume of polymer particles, greater than or equal to 1.1 wt. % of the initiator being contained within the first volume;a second volume of polymer particles having a mean diameter greater than 100 μ
m and on the basis of the total weight of the second volume of polymer particles, greater than or equal to 0.9 wt. % of the initiator being contained within the second volume; anda third volume of polymer particles having a mean diameter less than 100 μ
m and on the basis of the total weight of the third volume of polymer particles, wherein 0-1.1 wt. % of the initiator is contained within the third volume,wherein the wt. % of the initiator is different in each of the first, second, and third volumes of polymer particles. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40)
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Specification