Trabecula nasal filter having both macropores and micropores
OwnerKlaus Draenertinventor
Life of this patent
Estimating the term…
Abstract
The invention relates to a filter with a predeterminably adjustable porosity. The filter can be manufactured by forming a three-dimensional framework made of the filter material around particles, which serve as space retainers for the porosity, and subsequently removing the particles. The filter according to the invention consists of biologically inert material which does not harm the mucous membrane. When used as a nose filter, the filter keeps the breathing air free of particles and harmful gases.
Claims32
A filter with high porosity for temporary insertion via the vestibule of the nose into the external respiratory tracts, said filter being biological inert and not harmful to the mucous membrane, said filter comprising:
- a three-dimensional framework of trabecula structures which surround predetermined cavities, said cavities forming macropores having a size of between 0.2 mm and several mm and being connected to one another to form an interconnected cavity system, the three-dimensional framework of trabecula structures having an external shape adapted to fit the vestibule of the nose;
- said trabecula structures being formed of a base material selected from the group consisting of:
- cast materials and injected materials;
- said trabecula structures comprising a microporous filter system created by a highly absorbent filler material within or coating the base material.
Dependencies are inferred from the claim text.