Pasty or liquid multiple constituent compositions for injectable calcium phosphate cements
AssigneeEcole Polytechnique Federale de Lausanne-Service des Relations Industrielles
InventorsJacques Lemaitre, Christian Pittet, David Brendlen
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Abstract
The invention concerns injectable bone filling cements, in particular hydraulic calcium phosphate cements, the latter being prepared from at least two initial liquid or pasty constituents comprising each a species reactive in solution or in suspension, the solidification process being initiated when said constituents are being mixed.
Claims10
A process for making a calcium phosphate cement from a reaction of at least two pasty starting constituents which are mixed together in a mixing step, each of said constituents containing at least one reactive entity;
- said process also comprising a degassing step which is carried out on each constituent before the mixing step.
A method of preparing a calcium phosphate cement for use in surgery or dentistry comprising:
- a) providing two reactive entities which are each in paste form,
- b) degassing the two reactive entities and then
- c) mixing said entities to form the calcium phosphate cement.
A calcium phosphate cement produced from combining and reacting at least two pasty constituents wherein each constituent of at least two pasty constituents comprise one or more reactive entities and the pasty constituents are degassed prior to combining and reacting.
Dependencies are inferred from the claim text.