Reanimation device

Claim 2

In a resuscitation device for an alternative respiration and external cardiac massage of a patient, comprising a compressible and self-expanding reanimation bag, an adaptation piece for the breathing passage of a patient, a connecting tube connecting said bag to said adaptation piece, a one-way suction valve provided in the assembly defined by said bag and said connecting tube to fill said bag with fresh air during the expansion stroke of said bag, and a double valve provided between said connecting tube and said adaptation piece and adapted to allow the flow of fresh air from said bag into the lungs of the patient when the bag is being compressed, and the re-flow of said air from the lungs of the patient to the ambient air as soon as the bag has reached its collapsed condition, the improvement residing in that said double valve comprises a housing having a first opening leading to the ambient air, a second opening leading to said bag and a third opening leading to the patient, said first and second openings being aligned and provided in opposite walls of said housing and surrounded by inwardly extending tubUlar posts, the inner ends of which are aligned in spaced relationship, the tubular post of said second opening bearing on its inner end a peripheral flange provided with through-holes, said inner ends of said tubular posts forming valve seats for an elastic membrane, which is fastened to said peripheral flange in the peripheral area thereof and which alternatively cooperates with one of said tubular posts to alternate between two positions and to act as a double valve, said elastic membrane being biased into its first position by its elastic force, in which first position the elastic membrane sealingly covers said peripheral flange and said inner end of said second tubular post to connect said first opening to said third opening to thereby connect the lungs of the patient to the ambient air, and said elastic membrane being brought into its second position by the air flow from said bag, in which second position the elastic membrane sealingly covers the tubular post of said first opening to connect said second opening via said through-holes to said third opening to thereby connect said bag with the lungs of the patient, the cross-sectional area of the tubular post of said second opening leading to said bag being the same or larger than the total cross-sectional area of said through-holes in said peripheral flange.

Claim 3

The improvement of claim 1, wherein the cross-sectional area of the tubular post of said second opening leading to said bag is 1.2 to 20 times greater than the total cross-sectional area of the passage holes in said peripheral flange.

Claim 4

The improvement of claim 1, wherein the peripheral flange is curved.

Claim 5

The improvement of claim 1, wherein the elastic membrane is removably connected to the peripheral flange.

Claim 6

The improvement of claim 1, wherein the peripheral flange has a peripheral groove for receipt of a ring band arranged on the membrane.

Claim 7

The improvement of claim 1, wherein said peripheral flange has on its side remote from membrane a rubbery elastic ring which covers the passage holes of said peripheral flange and which has a slight returning force and which is separated slightly from said peripheral flange by the flow of air leading to the patient.

Claim 8

In a resuscitation device for an alternative respiration and external cardiac massage of a patient, comprising a compressible and self-expanding reanimation bag, an adaptation piece for the breathing passage of a patient, a connecting tube connecting said bag to said adaptation piece, a one-way suction valve provided in the assembly defined by said bag and said connecting tube to fill said bag with fresh air during the expansion stroke of said bag, and a double valve provided between said connecting tube and said adaptation piece and adapted to allow the flow of fresh air from said bag into the lungs of the patient when the bag is being compressed, and the re-flow of said air from the lungs of the patient to the ambient air as soon as the bag has reached its collapsed condition, the improvement residing in that said double valve comprises a housing having a first opening leading to the ambient air, a second opening leading to said bag and a third opening leading to the patient, said first and second openings being aligned and provided in opposite walls of said housing and surrounded by inwardly extending tubular posts, the inner ends of which are aligned in spaced relationship, the tubular post of said second opening bearing on its inner end an imperforate peripheral flange, said inner ends of said tubular posts forming valve seats for an elastic membrane, which is fastened to said peripheral flange in the peripheral area thereof and which alternatively cooperates with one of said tubular posts to alternate between two positions and to act as a double valve, said elastic membrane being biased into its first position by its elastic force, in which first position the elastic membrane sealingly covers said peripheral flange and the inner end of said second tubular post to connect saId first opening to said third opening to thereby connect the lungs of the patient to the ambient air, said elastic membrane being closed in its central portion and having passage holes in the area where it covers said peripheral flange, and said elastic membrane being brought into its second position by the air flow from said bag, in which second position the elastic membrane sealingly covers the tubular post of said first opening to connect said second opening via said passage holes in said membrane to said third opening to thereby connect said bag with the lungs of the patient, the cross-sectional area of the tubular post of said second opening leading to said bag being the same or greater than the total cross-sectional area of said passage holes in said membrane.

Claim 9

In a resuscitation device for an alternative respiration and external cardiac massage of a patient, comprising a compressible and self-expanding reanimation bag, an adaptation piece for the breathing passage of a patient, a connecting tube connecting said bag to said adaptation piece, a one-way suction valve provided in the assembly defined by said bag and said connecting tube to fill said bag with fresh air during the expansion stroke of said bag, and a double valve provided between said connecting tube and said adaptation piece and adapted to allow the flow of fresh air from said bag into the lungs of the patient when the bag is being compressed, and the re-flow of said air from the lungs of the patient to the ambient air as soon as the bag has reached its collapsed condition, the improvement residing in that said double valve comprises a housing having a first opening leading to the ambient air, a second opening leading to said bag and a third opening leading to the patient, said first and second openings being aligned and provided in opposite walls of said housing and surrounded by inwardly extending tubular posts, the inner ends of which are aligned in spaced relationship, the tubular post of said second opening bearing on its inner end an imperforate peripheral flange, said inner ends of said tubular posts forming valve seats for an elastic membrane, which is fastened to said peripheral flange in the peripheral area thereof and which alternatively cooperates with one of said tubular posts to alternate between two positions and to act as a double valve, said elastic membrane being biased into its first position by its elastic force, in which first position the elastic membrane sealingly covers said peripheral flange and the inner end of said second tubular post to connect saId first opening to said third opening to thereby connect the lungs of the patient to the ambient air, said elastic membrane being closed in its central portion and having passage holes in the area where it covers said peripheral flange, and said elastic membrane being brought into its second position by the air flow from said bag, in which second position the elastic membrane sealingly covers the tubular post of said first opening to connect said second opening via said passage holes in said membrane to said third opening to thereby connect said bag with the lungs of the patient, the cross-sectional area of the tubular post of said second opening leading to said bag being the same or greater than the total cross-sectional area of said passage holes in said membrane.

Claim 10

The improvement of claim 7, wherein the cross-sectional area of the post of said second opening leading to said bag is 1.2 to 20 times greater than the total cross-sectional area of the passage holes in said elastic membrane.

Claim 11

The improvement of claim 7, wherein the peripheral flange is curved.

Claim 12

The improvement of claim 7, wherein the elastic membrane is removably connected to the peripheral flange.

Claim 13

The improvement of claim 7, wherein the peripheral flange has a peripheral groove for receipt of a ring band arranged on the membrane.

Claim 14

In a resuscitation device for an alternative respiration and external cardiac massage of a patient, comprising a compressible and self-expanding reanimation bag, an adaptation piece for the breathing passage of a patient, a connecting tube connecting said bag to said adaptation piece, a one-way suction valve provided in the assembly defined by said bag and said connecting tube to fill said bag with fresh air during the expansion stroke of said bag, and a double valve provided between said connecting tube and said adaptation piece and adapted to allow the flow of fresh air from said bag into the lungs of the patient when the bag is being compressed, and the reflow of said air from the lungs of the patient to the ambient air as soon as the bag has reached its collapsed condition, the improvement residing in that said double valve comprises a housing having a first opening leading to the ambient air, a second opening leading to said bag and a third opening leading to the patient, said first and second openings being aligned and provided in opposite walls of said housing and surrounded by inwardly extending tubular posts, the inner ends of which are aligned in spaced relationship, the tubular post of said second opening bearing on its inner end a peripheral flange, said inner ends of said tubular posts forming valve seats for an elastic membrane, which is fastened to said peripheral flange in the peripheral area thereof and which alternatively cooperates with one of said tubular posts to alternate between two positions and to act as a double valve, said elastic membrane being biased into its first position by its elastic force, in which first position the elastic membrane sealingly covers said peripheral flange and said inner end of said second tubular post to connect said first opening to said third opening to thereby connect the lungs of the patient to the ambient air, and said elastic membrane being brought into its second position by the air flow from said bag, in which second position the elastic membrane sealingly covers the tubular post of said first opening and with said flange defining a passage to connect said second opening via said passage to said third opening to thereby connect said bag with the lungs of the patient, the cross-sectional area of the tubular post of said second opening leading to said bag being the same or larger than the total cross-sectional area of said passage.

Claim 15

In a resuscitation device for an alternative respiration and external cardiac massage of a patient, comprising a compressible and self-expanding reanimation bag, an adaptation piece for the breathing passage of a patient, a connecting tube connecting said bag to said adaptation piece, a one-way suction valve provided in the assembly defined by said bag and said connecting tube to fill said bag with fresh air during the expansion stroke of said bag, and a double valve provided between said connecting tube and said adaptation piece and adapted to allow the flow of fresh air from said bag into the lungs of the patient when the bag is being compressed, and the reflow of said air from the lungs of the patient to the ambient air as soon as the bag has reached its collapsed condition, the improvement residing in that said double valve comprises a housing having a first opening leading to the ambient air, a second opening leading to said bag and a third opening leading to the patient, said first and second openings being aligned and provided in opposite walls of said housing and surrounded by inwardly extending tubular posts, the inner ends of which are aligned in spaced relationship, the tubular post of said second opening bearing on its inner end a peripheral flange, said inner ends of said tubular posts forming valve seats for an elastic membrane, which is fastened to said peripheral flange in the peripheral area thereof and which alternatively cooperates with one of said tubular posts to alternate between two positions and to act as a double valve, said elastic membrane being biased into its first position by its elastic force, in which first position the elastic membrane sealingly covers said peripheral flange and said inner end of said second tubular post to connect said first opening to said third opening to thereby connect the lungs of the patient to the ambient air, and said elastic membrane being brought into its second position by the air flow from said bag, in which second position the elastic membrane sealingly covers the tubular post of said first opening and with said flange defining a passage to connect said second opening via said passage to said third opening to thereby connect said bag with the lungs of the patient, the cross-sectional area of the tubular post of said second opening leading to said bag being the same or larger than the total cross-sectional area of said passage.