Automatic respirator-inhalation therapy device

Claim 2

An automatic respirator-inhalation therapy device comprising, in combination: a patient adapter; a primary pressure supply conduit means adapted to receive pressurized gas from a source and deliver said gas to said patient adapter for use; a primary control vaLve means in said supply conduit means and operative when open to permit flow of said gas to said adapter, and operative when closed to prevent said gas flow; first control means operatively associated with said control valve means and adapter, said control means being responsive to the pressure in said adapter so that when there is a predetermined sub-ambient pressure condition in the adapter, such sub-ambient pressure is communicated to said control means causing it to open said control valve means; and second control means operatively associated with said primary control valve means to maintain said primary control valve means open a predetermined time and to close said control valve means after a predetermined time has elapsed, said second control means including adjustment means for adjusting said predetermined elapsed time.

Claim 3

The combination according to claim 1 wherein said combination further includes a pressure regulator means responsive to the flow pressure in said adapter so as to prevent said flow pressure from attaining a pressure higher than a predetermined level, said regulator means including adjustment means for selecting a predetermined pressure level.

Claim 4

The combination of claim 2 in which a means is provided for varying the flow rate to said adapter to substantially match the flow intake impedances of different patients.

Claim 5

The combination of claim 3 in which said primary control valve is actuated into closed and opened position in response to pneumatic pressure from said primary pressure supply conduit means.

Claim 6

The combination according to claim 4 in which the first control means is a pressure responsive valve means actuated in response to the pressure in said adapter and connected between said primary pressure supply conduit means and said primary control valve means.

Claim 7

The combination of claim 4 in which said second control means is a manually adjustable restrictor valve means connected to said supply conduit means, the degree of restriction controlling the said predetermined time required to build up sufficient pressure to actuate said primary control valve closed.

Claim 8

The combination of claim 1 in which a means is provided for varying the flow rate to said adapter to substantially match the flow intake impedances of different patients.

Claim 9

The combination of claim 1 in which said primary control valve is actuated into closed and opened position in response to pneumatic pressure from said primary pressure supply conduit means.

Claim 10

The combination according to claim 8 in which the first control means is a pressure responsive valve means actuated in response to the pressure in said adapter and connected between said primary pressure supply conduit means and said primary control valve means.

Claim 11

The combination of claim 8 in which said second control means is a manually adjustable restrictor valve means connected to said supply conduit means, the degree of restriction controlling the said predetermined time required to build up sufficient pressure to actuate said primary control valve closed.

Claim 12

An automatic respirator-inhalation therapy device comprising, in combination: a primary pressure supply conduit means adapted to receive pressurized gas from a source and deliver said gas to a patient adapter for use; a primary control valve means in said supply conduit means and operative when open to permit flow of said gas to said adapter, and operative when closed to prevent said gas flow, said primary control valve means being actuated into closed and opened positions in response to pneumatic pressure from said primary pressure supply conduit means; first control means operatively associated with said control valve means and adapter, said first control means comprising a bi-stable pressure responsive valve means actuated in response to the pressure in said adapter and connected between said primary pressure supply conduit means and said primary control valve means, said bi-stable valve means being actuaTed into a closed position by a vacuum created by a venturi means operatively connected to said primary pressure conduit means through said pressure responsive valve means and said primary control valve means, said first control means being responsive to the pressure in said adapter so that when there is a predetermined sub-ambient pressure condition in the adapter, such sub-ambient pressure is communicated to said control means causing it to open said primary control valve means; and second control means operatively associated with said primary control valve means to close said control valve means after a predetermined time has elapsed, said second control means including adjustment means for adjusting said predetermined elapsed time.

Claim 13

An automatic respirator-inhalation therapy device comprising, in combination: a primary pressure supply conduit means adapted to receive pressurized gas from a source and deliver said gas to a patient adapter for use; a primary control valve means in said supply conduit means and operative when open to permit flow of said gas to said adapter, and operative when closed to prevent said gas flow, said primary control valve means being actuated into closed and opened positions in response to pneumatic pressure from said primary pressure supply conduit means; first control means operatively associated with said control valve means and adapter, said first control means comprising a bi-stable pressure responsive valve means actuated in response to the pressure in said adapter and connected between said primary pressure supply conduit means and said primary control valve means, said bi-stable valve means being actuaTed into a closed position by a vacuum created by a venturi means operatively connected to said primary pressure conduit means through said pressure responsive valve means and said primary control valve means, said first control means being responsive to the pressure in said adapter so that when there is a predetermined sub-ambient pressure condition in the adapter, such sub-ambient pressure is communicated to said control means causing it to open said primary control valve means; and second control means operatively associated with said primary control valve means to close said control valve means after a predetermined time has elapsed, said second control means including adjustment means for adjusting said predetermined elapsed time.

Claim 14

The combination of claim 11 in which a third control means is operatively associated with said primary control valve means to open said primary control means after a predetermined time has elapsed.

Claim 15

The combination of claim 12 in which said third control means is a manually adjustable restrictor valve means connected to said supply conduit means, the degree of restriction controlling the said predetermined time required to build up sufficient pressure to actuate said primary control valve open.

Claim 16

The combination of claim 13 in which said second control means is a manually adjustable restrictor valve means connected to said supply conduit means, the degree of restriction controlling the said predetermined time required to build up sufficient pressure to actuate said primary control valve closed.

Claim 17

The combination of claim 11 wherein said combination further includes a pressure regulator means responsive to the flow pressure in said adapter so as to prevent said flow pressure from obtaining a pressure higher than a predetermined level, said regulator means including adjustment means for selecting a predetermined pressure level, and means are provided for varying the flow rate to said adapter to substantially match the flow intake impedances of different patients.

Claim 18

The combination of claim 15 in which a third control means is operatively associated with said primary control valve means to open said primary control means after a predetermined time has elapsed.

Claim 19

The combination of claim 16 in which said third control means is a manually adjustable restrictor valve means connected to said supply conduit means, the degree of restriction controlling the said predetermined time required to build up sufficient pressure to actuate said primary control valve open.

Claim 20

The combination of claim 17 in which said second control means is a manually adjustable restrictor valve means connected to said supply conduit means, the degree of restriction controlling the said predetermined time required to build up sufficient pressure to actuate said primary control valve closed.