LIGHT DIFFUSER AND PROCESS FOR PRODUCING THE SAME

摘要

A light diffuser (10), in particular a light diffuser suitable for introducing diffuse light into a tissue, is produced by interpenetration of a diffusing material in the liquid state into a boundary layer (4) of a porous moulding material, creating a diffuser surface having a surface structure which essentially represents a negative of the pore structure of the moulding material and has recessed shapes produced by surface tension. The light diffuser (10) is produced, for example, by introducing a diffuser blank (1) composed of a material which can be liquefied by mechanical vibration into the moulding material and by exciting it at the same time with mechanical vibrations, so as to liquefy the liquefiable material at least where it is in contact with the moulding material, and by pressing it into the moulding material. Diffuser production in site is particularly advantageous for the photodynamic therapy of bone tissue (20), in that an implant designed as a diffuser blank (1) is implanted in the bone tissue (20), which acts as a porous moulding material, for example by means of ultra-sound, and then is connected to a light-conducting optical fibre in order to expose the bone tissue to light.