Instytut Wysokich Cisnien Polskiej Akademii Nauk

Tadeusz Chudoba

Aleksandra Kędzierska

Dariusz Smoleń

Aharon Gedanken

Wojciech Swięszkowski

Witold Lojkowski

Sylwia Kuśnieruk

Agnieszka Opalinska

Donats Millers

Krzysztof Kurzydłowski

Wojciech Święszkowski

Elżbieta Pietrzykowska

Witold Łojkowski

Ilze Salma

Vita Zalite

Janis Locs

Jacek Wojnarowicz

Elzbieta Pietrzykowska

Julia Rogowska-Tylman

Bartosz Woźniak

Mara Pilmane

Sylwia Kusnieruk

Dariusz Smolen

Krisjanis Smits

Anna Swiderska- Sroda

Larisa Grigorjeva

Krzysztof Galazka

Roman Mukhovskyi

Jacek Kropiwnicki

Michal Charkiewicz

Sylwia Dabrowska

Agnieszka Chodara

Wojciech Swieszkowski

The method of making an implant consists on coating of a supporting structure () with synthetic hydroxyapatite by immersing the supporting structure () in a suspension () and triggering of a cavitation in a portion of the suspension () being in contact with the supporting structure (). The suspension () is formed by a liquid external phase, advantageously water, and internal phase, i.e. particles of synthetic hydroxyapatite having an average particle size not exceeding 100 nm and containing structural water in an amount from 2 to 6% by weight. The implant is coated with the above described hydroxyapatite subjected to cavitation and a thickness of 50 nm to 1000 nm, advantageously 50 nm to 300 nm.

Method for manufacturing bone implants and bone implant

To manufacture the implant a nanopowder of synthetic hydroxyapatite (Hap) is used having a hexagonal structure, average grain size in a range from 3 to 30 nm and the specific surface area greater than 200 m/g. First the nanopowder is formed to the desired geometric shape, and then the shape is fixed. In the step of shape information the dried nanopowder is pressed in the mold under the pressure ranging from 50 Mpa to 2 GPa. In the step of fixing the pressed nanopowder at room temperature is subjected to the pressure rising from the ambient value to the peak value selected from a range of 1 to 8 GPa and to a temperature selected from a range of 100&#xb0; C. to 600&#xb0; C. for a period of time selected from a range from 30 seconds to 5 minutes. The density of thus produced implant, determined by helium method, is not less than 75% of the theoretical density.

Growing community of inventors

Warsaw, Poland

Tadeusz Chudoba