Method and Device for Investigation of Sludge Deposits on Materials for Endoprostheses and Endoprosthesis
First Claim
1. Method for examining sludge deposits on materials for the coating of endoprostheses, characterized in that at least one coated endoprosthesis is positioned in at least one incubation container and in that the incubation container is at least partially filled with infected bile and in that at least one incubation container provided with an endoprosthesis to be examined is tilted back and forth and in that part of the bile fluid is replaced on a regular basis.
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Abstract
The invention relates to a method and device for the investigation of sludge deposition on materials for coating endoprostheses. At least one endoprosthesis is placed in an incubation chamber which is at least partly filled with infected bile. The incubation chamber is rocked gently on a rocking platform for a period of about 35 days. The bile fluid is regularly partly exchanged. The endoprosthesis is embodied in a coated plastic. The coating comprises 70 to 80% by weight of hydrophobic components and 30% to 20% by weight of hydrophilic components. The coating may particularly have a sol-gel embodiment. An application in bile duct prostheses is possible.
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Citations
28 Claims
- 1. Method for examining sludge deposits on materials for the coating of endoprostheses, characterized in that at least one coated endoprosthesis is positioned in at least one incubation container and in that the incubation container is at least partially filled with infected bile and in that at least one incubation container provided with an endoprosthesis to be examined is tilted back and forth and in that part of the bile fluid is replaced on a regular basis.
- 6. Device for examining materials for the coating of endoprostheses, characterized in that a swiveling table for the positioning of samples is arranged in a pivotable manner relative to an axis of rotation and in that at least one incubation container filled at least partially with bile is arranged on the swiveling table for the acceptance of samples.
- 11. Endoprosthesis made of a plastic with a coating, characterized in that the coating has 70 to 80 wt-% hydrophobic components and 30 to 20 wt-% hydrophilic components.
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12. Endoprosthesis made of a plastic with a coating, characterized in that the coating is designed based on a sol-gel process.
Specification