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US 5,848,590 AGranted
Tracheostoma filter with HME properties
AssigneeKapitex Healthcare Limited
InventorRory James Maxwell Smith
Life of this patent
Estimating the term…
Abstract
A filter assembly for filtering air that is to be breathed through a tracheostoma comprises (a) a housing, and (b) a filter component which can be fitted into the housing the filter component is movable within the housing as a result of a pressure difference across the component due to breathing, between an inhalation position, and an exhalation position resulting in a change in resistance to breathing through the assembly.
Claims13
A filter assembly for filtering air that is to be breathed through a tracheostoma, comprising:
- a housing;
- a filter component which can be fitted into the housing, the filter component being movable within the housing as a result of a pressure difference across the component due to breathing, between an inhalation position, and an exhalation position resulting in a change in resistance to breathing through the assembly;
- wherein the housing includes means for controlling the movement of the filter component between the inhalation and exhalation positions;
- and
- wherein the means for controlling the movement of the filter component comprises a lug on one of the housing and the filter component which slidingly engages a groove on the other of the housing and the filter component.
2 more elements
Dependencies are inferred from the claim text.