Resuscitator device

Claim 2

A resuscitator device comprising, in combination: a bistable resuscitator valve means connected to a source of positive pressure, and having a positive pressure outlet conduit; a second valve means comprising a housing having an inner chamber; first, second and third passageways within said housing leading from said chamber; said first passageway communicating with said positive pressure outlet conduit and leading to a first valve seat fixedly formed within said housing; said third passageway being alternately placed in communication with said first and second passageways; a discrete continuous flexible valve member of substantially planar configuration mounted within said housing juxtaposed to said passageways, said first valve seat being located on one side of said valve member and said second and third passageways cooperating with a second valve seat fixedly formed within said housing and being located on the opposite side of said valve member, said flexible valve member operating to alternately seat upon said first and second valve seats as determined by the position of said bistable valve means, and time-delay means operatively connected to said valves for controlling the duration of the exhalation cycle.

Claim 3

The resuscitator device of claim 1 wherein said bistable valve means comprises a valve body having a chamber partially closed by a diaphragm, a positive pressure inlet means and an aspirator outlet means, a shutoff means for said aspirator outlet means, and linkage means connected to the operated by said diaphragm to position said shutoff mans alternately to shutoff egress from said chamber to said aspirator outlet or to permit such egress, said chamber being in constant communication with said positive pressure outlet conduit.

Claim 4

The resuscitator device of claim 1 wherein said bistable valve means comprises a pressure cycling fluid amplifier device including pressure feedback means.

Claim 5

The resuscitator device of claim 3 wherein said fluid amplifier device comprises a body member having a pressure inlet passage leading to a chamber, a pair of control jet passages one on each side of said pressure inlet jet passage and impinging thereon, a pair of outlet channEls leading from said chamber and being separated by a portion of the wall of said chamber formed into a splitter head, one of said channels leading to the ambient, and the other of said channels leading to said positive pressure outlet conduit.

Claim 6

The resuscitator device of claim 4 wherein said fluid amplifier device includes a feedback passageway interconnecting said other channel to one of said control jet passages.

Claim 7

The resuscitator of claim 1 wherein said time-delay means includes a check valve in communication with said positive pressure outlet conduit and leading to ambient, said check valve operating to admit ambient atmosphere to said conduit during the exhalation phase to thereby delay the cycling of the bistable valve means for a period determined by said time-delay means.

Claim 8

The resuscitator device of claim 6 wherein said time-delay means includes means for presetting the rate of flow-in of ambient atmosphere past said check valve to said conduit.

Claim 9

The resuscitator device of claim 7 wherein said means for presetting the rate of flow-in is adjustable.

Claim 10

The resuscitator device of claim 8 wherein a further adjustable means is provided to determine the length of the time delay including a magnet element and an armature positionable relative to the field of said magnet.

Claim 11

A resuscitator device comprising, in combination: a bistable resuscitator valve means connected to a source of positive pressure, and having a positive pressure outlet conduit and an outlet conduit to ambient, said valve means operating in one phase to emit positive pressure from said positive pressure outlet conduit and operating in a second phase to emit positive pressure from said ambient outlet conduit, a second valve means comprising a housing having an inner chamber; first, second and third passageways within said housing leading from said chamber; said first passageway communicating with said positive pressure outlet conduit and leading to a first valve seat fixedly formed within said housing; said third passageway being alternately placed in communication with said first and second passageways; a discrete continuous flexible valve member of substantially planar configuration mounted within said housing juxtaposed to said passageways, said first valve seat being located on one side of said valve member and said second and third passageways cooperating with a second valve seat fixedly formed within said housing and being located on the opposite side of said valve member, said flexible valve member operating to alternately seat upon said first and second valve seats as determined by the position of said bistable valve means, said valves cooperating in a predetermined manner to selectively provide an inhalation and exhalation cycle of pressure to a patient''s lungs; and time-delay means operatively connected to said valves for controlling the characteristics of one of said cycles.

Claim 12

A resuscitator device comprising, in combination: a bistable resuscitator valve means connected to a source of positive pressure, and having a positive pressure outlet conduit and an outlet conduit to ambient, said valve means operating in one phase to emit positive pressure from said positive pressure outlet conduit and operating in a second phase to emit positive pressure from said ambient outlet conduit, a second valve means comprising a housing having an inner chamber; first, second and third passageways within said housing leading from said chamber; said first passageway communicating with said positive pressure outlet conduit and leading to a first valve seat fixedly formed within said housing; said third passageway being alternately placed in communication with said first and second passageways; a discrete continuous flexible valve member of substantially planar configuration mounted within said housing juxtaposed to said passageways, said first valve seat being located on one side of said valve member and said second and third passageways cooperating with a second valve seat fixedly formed within said housing and being located on the opposite side of said valve member, said flexible valve member operating to alternately seat upon said first and second valve seats as determined by the position of said bistable valve means, said valves cooperating in a predetermined manner to selectively provide an inhalation and exhalation cycle of pressure to a patient''s lungs; and time-delay means operatively connected to said valves for controlling the characteristics of one of said cycles.

Claim 13

The device of claim 10 wherein said bistable valve means comprises a pressure-cycling fluid amplifier device including pressure feedback means.

Claim 14

The resuscitator device of claim 11 wherein said fluid amplifier device comprises a body member having a pressure inlet passage leading to a chamber, a pair of control jet passages one on each side of said pressure inlet jet passage and impinging thereon, a pair of outlet channels leading from said chamber and being separated by a portion of the wall of said chamber formed into a splitter head, one of said channels leading to the ambient, and the other of said channels leading to said positive pressure outlet conduit.

Claim 15

The resuscitator device of claim 11 wherein said fluid amplifier device includes a feedback passageway interconnecting said other channel to one of said control jet passages.

Claim 16

The resuscitator device of claim 13 wherein said time-delay means includes a second bistable valve means interconnected to said feedback passageway to control the cycling of said fluid amplifier device.

Claim 17

The resuscitator device of claim 14 wherein said second bistable valve means is arranged to open said feedback passageway to ambient during the inhalation phase to thereby maintain positive pressure in the lungs of a patient, and means for adjustably presetting the rate at which said second bistable valve means will cycle.