Method for producing an implant comprising calcium carbonate-containing composite powder having microstructured particles having inhibiting calcium carbonate

A method for producing an implant by means of a composite powder having microstructured particles having inhibiting calcium carbonate,

• wherein initially the composite powder is obtained by bonding large particles to small particles,
• wherein the large particles have a mean particle diameter in the range from 0.1 μm to 10 mm,
• wherein the large particles comprise at least one polymer,
• wherein the small particles are arranged on the surface of the large particles and/or are non-homogeneously spread within the large particles,
• wherein the small particles comprise calcium carbonate particles,
• wherein the small particles have a mean particle size in the range from 0.01 μm to 1.0 mm,
• wherein subsequently the implant is formed by selective laser sintering of a composition comprising the composite powder, and
• wherein the small particles are obtained by coating calcium carbonate particles with a composition which, in each case based on its total weight, comprises a mixture of at least 0.1 wt.-% of at least one calcium complexing agent and/or at least one conjugated base which is an alkali metal salt or calcium salt of a weak acid, together with at least 0.1 wt. % of at least one weak acid.

A method for producing an implant by means of a composite powder having microstructured particles having inhibiting calcium carbonate,

• wherein initially the composite powder is obtained by bonding large particles to small particles,
• wherein the large particles comprise at least one polymer,
• wherein the small particles are arranged on the surface of the large particles and/or are non-homogeneously spread within the large particles,
• wherein the small particles comprise calcium carbonate particles,
• wherein subsequently the implant is formed by selective laser sintering of a composition comprising the composite powder, and
• wherein the small particles are obtained by coating calcium carbonate particles with a composition which, in each case based on its total weight, comprises a mixture of at least 0.1 wt.-% of at least one calcium complexing agent and/or at least one conjugated base which is an alkali metal salt or calcium salt of a weak acid, together with at least 0.1 wt. % of at least one weak acid.

A method for producing an implant by means of a composite powder having microstructured particles having inhibiting calcium carbonate,

• wherein initially the composite powder is obtained by bonding large particles to small particles,
• wherein the small particles are arranged on the surface of the large particles and/or are non-homogeneously spread within the large particles,
• wherein subsequently the implant is formed by selective laser sintering of a composition comprising the composite powder, and
• wherein the small particles are obtained by coating calcium carbonate particles with a composition which, in each case based on its total weight, comprises a mixture of at least 0.1 wt.-% of at least one calcium complexing agent and/or at least one conjugated base which is an alkali metal salt or calcium salt of a weak acid, together with at least 0.1 wt. % of at least one weak acid.