Abstract: The invention relates to a coated balloon catheter with a catheter substrate and a coating on the catheter substrate. The coating comprises a pharmaceutically active ingredient embedded in a binder matrix. The binder matrix consists of a polyethylene glycol-polyvinyl alcohol copolymer (PEG-PVA copolymer) and optionally shellac or a shellac derivative and additional pharmaceutically acceptable additives. A composition for coating the balloon catheter comprises the pharmaceutically active ingredient and a binder consisting of a PEG-PVA copolymer and optionally shellac or a shellac derivative. The active ingredient and the binder are dissolved in a solvent consisting of water, DMSO and at least one additional organic solvent indefinitely miscible with water.

Abstract: A method and apparatus for coating catheters or balloon catheters is disclosed in which the catheter or balloon catheter is radially surrounded completely or almost completely at a constant distance by a device that applies a coating solution so that the coating solution completely fills the space between the catheter or balloon catheter and the device and thus completely surrounds the catheter or balloon catheter, relative motion is effected between the device and the catheter or balloon catheter in the axial direction across the surface of the catheter or balloon catheter multiple times, and partial drying of the applied coating solution occurs between the individual coating stages.

Abstract: In a method and apparatus for coating catheters or balloon catheters the catheter or balloon catheter is radially surrounded completely or almost completely at a constant distance by a device that applies a coating solution so that the coating solution completely fills the space between the catheter or balloon catheter and the device and thus completely surrounds the catheter or balloon catheter, relative motion is effected between the device and the catheter or balloon catheter in the axial direction across the surface of the catheter or balloon catheter multiple times, and partial drying of the applied coating solution occurs between the individual coating stages.

Abstract: A method for coating substrates with calcium phosphate. The aim of the method is to be able to carry out a simple coating for all materials as well as for particles. To this end, the substrate to be coated is placed in a calcium phosphate gel, whereupon this substrate that is coated with the gel is dried. Afterwards, the calcium phosphate particles not adhering to the substrate are removed. The substrate can also be placed inside a colloidal solution of SiO2 containing a calcium phosphate, whereupon the mixture is constantly set in motion, the solvent is removed, and the substrate is provided with a calcium phosphate layer by condensing the colloidal SiO2 on the surface of the substrate. The coated substrates can, particularly when it concerns coated particles, be used as a bone substitute material.