Tracheotomy filter for tracheotomy patients
OwnerRobert Bezicotinventor
Life of this patent
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Abstract
An artificial nose (1) comprising a housing (20) mounted around the surgical opening (3) by a base ring (10) with a two-sided adhesive (15) containing a hydrophilic filtering disc (40) which forms an alternate heat and moisture exchanger between the exhaled and inhaled air. A grid (30) is arranged between the filter (40) and the surgical opening (3) and has a plane front surface (32) contacting the filter, and a convex rear surface (31) with calibrated through-passages. The distance between the front surface (32) and the rear surface (31) ensures, together with the calibre of the through-passages, that mucus ejected from the trachea is essentially unable to reach the filter.
Claims22
Tracheotomy filter for a tracheotomy patient having a surgical opening joining the trachea to the skin, said tracheotomy filter comprising an apertured casing having an annular flange for attaching the casing to a peripheral skin zone surrounding the surgical opening, the apertured casing housing a hydrophilic filter mass forming an exchanger for alternate exchange of heat and moisture between exhaled air and inhaled air and a grill disposed to one side of the filter mass facing the surgical opening, the grill comprising anterior and posterior grill components respectively facing the filter mass and the surgical opening, a space being defined between operative central portions of said anterior and posterior components, said posterior component having openings defined for blocking penetration of mucus and said filter mass being sufficiently spaced from said posterior component whereby most mucus expelled from the trachea is prevented from reaching the filter mass.
Tracheotomy filter for a tracheotomy patient having a surgical opening joining the trachea to the skin, said tracheotomy filter comprising an apertured casing having an annular flange for attaching the casing to a peripheral skin zone surrounding the surgical opening, the apertured casing housing a hydrophilic filter mass forming an exchanger for alternate exchange of heat and moisture between exhaled air and inhaled air and a grill disposed to one side of the filter mass facing the surgical opening, the grill having spaced anterior and posterior components respectively facing the filter mass and the surgical opening, said posterior component having openings defined for blocking penetration of mucus and said filter mass being sufficiently spaced from said posterior component whereby most mucus expelled from the trachea is prevented from reaching the filter mass, and means for removably mounting said grill in said apertured casing to facilitate cleaning of the grill.
Dependencies are inferred from the claim text.