Apparatus for maintaining airway patency

Abstract

An apparatus is provided for relaxing an apneic obstruction in a nasopharyngeal airway of a patient. A bolus chamber and a rearward chamber are defined within a housing. A movable piston within the housing is actuated using a pair of magnets. When an impeller, mounted within the rearward chamber, rotates as a result of patient exhalation into the rearward chamber, the repulsive force between said magnets causes said piston to move and drive a bolus of air into the airway of the patient.

I claim:  
     
         1 . An apparatus for relaxing an apneic obstruction in a nasopharyngeal airway of a patient for alleviating sleep apnea, snoring or breathing difficulty, comprising: 
 a housing having defined therein a bolus chamber and a rearward chamber;    a piston mounted to be reciprocal within, said housing;    a rotatable impeller mounted within said rearward chamber; and,    at least a pair of magnets, one said magnet attached to said impeller and the other said magnet attached to said piston, whereby upon rotation of said impeller resulting from airflow into said rearward chamber, a repulsive force between said magnets causes said piston to move and drive a bolus of air from said bolus chamber into said airway.    
     
     
         2 . The apparatus of  claim 1 , wherein said bolus chamber further comprises an outlet normally closed by a valve structure.  
     
     
         3 . The apparatus of  claim 1 , further comprising a mask for placement on said patient.  
     
     
         4 . The apparatus of  claim 1 , wherein said bolus chamber is partially defined by a flexible rolling diaphragm.  
     
     
         5 . The apparatus of  claim 4 , wherein a flexible disc valve is centrally located on said diaphragm.  
     
     
         6 . The apparatus of  claim 5 , wherein apertures are provided in a face of said piston and normally blocked by said flexible disc valve.  
     
     
         7 . The apparatus of  claim 1 , wherein said impeller further comprises a spring recessed into a hub thereof for returning said impeller to a starting position to neutralize said repulsive force.  
     
     
         8 . An apparatus for relaxing an apneic obstruction in a nasopharyngeal airway of a patient for alleviating sleep apnea, snoring or breathing difficulty, comprising: 
 a bolus chamber defined within a housing and having an outlet normally closed by a valve structure;    a rearward chamber defined within said housing and separated from said bolus chamber by a movable piston, wherein said rearward chamber is adapted to receive airflow from a conduit when said valve structure is closed;    a rotatable impeller mounted within said rearward chamber; and,    at least a pair of magnets, one said magnet attached to said impeller and the other said magnet attached to said piston, whereby upon rotation of said impeller resulting from said airflow, a repulsive force between said magnets causes said piston to move and drive a bolus of air into said airway.    
     
     
         9 . The apparatus of  claim 8 , further comprising a mask for placement on said patient.  
     
     
         10 . The apparatus of  claim 8 , wherein said bolus chamber is partially defined by a flexible rolling diaphragm.  
     
     
         11 . The apparatus of  claim 10 , wherein a flexible disc valve is centrally located on said diaphragm.  
     
     
         12 . The apparatus of  claim 11 , wherein apertures are provided in a face of said piston and normally blocked by said flexible disc valve.  
     
     
         13 . The apparatus of  claim 8 , wherein said impeller further comprises a spring recessed into a hub thereof for returning said impeller to a starting position to neutralize said repulsive force.  
     
     
         14 . An apparatus for relaxing an apneic obstruction in a nasopharyngeal airway of a patient for alleviating sleep apnea, snoring or breathing difficulty, comprising: 
 a mask;    a housing attached to said mask; and,    a means within said housing for forcing a pressurized airflow into said airway, wherein said means is adapted to rotate and is driven to rotate by exhaled breath coming from said mask.