Apparatus for enhancing a person's breathing and/or artificial respiration

Claim 1

An apparatus for enhancing a person's breathing and artificial respiration which has inspiration and expiration phases and where the inspiration phase is repeated periodically within a time constant of the operation of a person's lungs, comprising: a respiratory gas breathing line having a tubular connection adapted to be connected to a person's trachea, a blow-in line located in said tubular connection, a gas supply line connected into said tubular connection through said blow-in line in said tubular connection, a pressure sensor located in said tubular connection downstream of said blow-in line, pressure control means connected to said pressure sensor, a pressure reducer, a dosing valve, and an inspiration valve having an open and closed position all located in series in said gas supply line, said pressure control means connected to said inspiration valve and being responsive to said pressure sensor for closing said inspiration valve, frequency control means connected to said pressure control means for supplying pressure signals indicative of inspiration and expiration to said pressure control means, said pressure control means being responsive to said signals for alternately opening and closing said inspiration valve during inspiration and expiration phases, respectively, said frequency control means having a housing with a control chamber defined therein, adjustable partition means in said control chamber dividing said control chamber into an inspiration chamber portion and an expiration chamber portion of adjustable relative size, a frequency valve having an inspiration line connected to said inspiration chamber and an expiration line connected to said expiration chamber, first pneumatic diaphragm control elements in said inspiration line and said expiration line respectively, a second inspiration line connected from said inspiration chamber to said inspiration valve and a second expiration line connected from said expiration chamber to said inspiration valve, second pneumatic diaphragm control elements in said second inspiration and second expiration lines respectively, connected to said pressure control means and to said first pneumatic diaphragm control elements, said first pneumatic diaphragm control elements being responsive to said frequency control valve and signals from said second pneumatic diaphragm control elements to initiate inspiration and expiration phases, said second pneumatic diaphragm control elements producing signals at the end of inspiration and expiration phases, respectively, said pressure control means switching said second pneumatic diaphragm control elements to initiate an expiration phase and to close said inspiration valve if pressure in said tubular connection attains a selected limit.

Claim 2

An apparatus for enhancing a person's breathing and artificial respiration which has inspiration and expiration phases and where the inspiration phase is repeated periodically within a time constant of the operation of a person's lungs, comprising: a respiratory gas breathing line having a tubular connection adapted to be connected to a person's trachea, a blow-in line located in said tubular connection, a gas supply line connected into said tubular connection through said blow-in line in said tubular connection, a pressure sensor located in said tubular connection downstream of said blow-in line, pressure control means connected to said pressure sensor, a pressure reducer, a dosing valve, and an inspiration valve having an open and closed position all located in series in said gas supply line, said pressure control means connected to said inspiration valve and being responsive to said pressure sensor for closing said inspiration valve, frequency control means connected to said pressure control means for supplying pressure signals indicative of inspiration and expiration to said pressure control means, said pressure control means being responsive to said signals for alternately opening and closing said inspiration valve during inspiration and expiration phases, respectively, said frequency control means having a housing with a control chamber defined therein, adjustable partition means in said control chamber dividing said control chamber into an inspiration chamber portion and an expiration chamber portion of adjustable relative size, a frequency valve having an inspiration line connected to said inspiration chamber and an expiration line connected to said expiration chamber, first pneumatic diaphragm control elements in said inspiration line and said expiration line respectively, a second inspiration line connected from said inspiration chamber to said inspiration valve and a second expiration line connected from said expiration chamber to said inspiration valve, second pneumatic diaphragm control elements in said second inspiration and second expiration lines respectively, connected to said pressure control means and to said first pneumatic diaphragm control elements, said first pneumatic diaphragm control elements being responsive to said frequency control valve and signals from said second pneumatic diaphragm control elements to initiate inspiration and expiration phases, said second pneumatic diaphragm control elements producing signals at the end of inspiration and expiration phases, respectively, said pressure control means switching said second pneumatic diaphragm control elements to initiate an expiration phase and to close said inspiration valve if pressure in said tubular connection attains a selected limit.