Manually operated respiration apparatus, and balloon unit and valve housing for a manually operated respiration apparatus
First Claim
1. A manually operable respiration apparatus, comprising:
- a respiration housing having an inflow port opening into the respiration housing, an outflow port opening into the respiration housing, and a respiration channel, the respiration channel opening into the respiration housing for supplying gas to a patient;
a balloon unit connected to the inflow port, the balloon unit comprising a resilient bellows constructed so that after being squeezed from a starting position, the bellows returns to the starting position, the balloon unit further comprising a non-return valve constructed to allow the gas to enter the balloon unit as the bellows returns to the starting position; and
a valve system constructed to allow the gas to travel from the inflow port to the respiration channel, and from the respiration channel to the outflow port;
wherein the bellows further comprises an overpressure protection valve constructed to open and allow a portion of the gas to escape the bellows without entering the respiration housing only while a pressure of the gas in the bellows exceeds a predetermined threshold value.
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Accused Products
Abstract
A manually operated respiration apparatus, including a respiration housing, provided with a respiration channel for connection with a patient to whom artificial respiration is to be applied, which respiration channel is connected via a valve system connected to a balloon unit for supplying air to the patient via the respiration channel and with an outflow port for evacuation of air exhaled by the patient. The balloon unit includes a resilient bellows provided with a first opening with a non-return valve and a second opening. The second opening of the bellows is connected with the inflow port of the respiration housing. Upon squeezing the bellows, air exits the bellows via the second opening. Upon releasing the bellows, it rebounds and draws in air via the first opening. The bellows is provided with an overpressure protection for evacuating air from the bellows when a predetermined pressure value is exceeded.
18 Citations
44 Claims
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1. A manually operable respiration apparatus, comprising:
a respiration housing having an inflow port opening into the respiration housing, an outflow port opening into the respiration housing, and a respiration channel, the respiration channel opening into the respiration housing for supplying gas to a patient;
a balloon unit connected to the inflow port, the balloon unit comprising a resilient bellows constructed so that after being squeezed from a starting position, the bellows returns to the starting position, the balloon unit further comprising a non-return valve constructed to allow the gas to enter the balloon unit as the bellows returns to the starting position; and
a valve system constructed to allow the gas to travel from the inflow port to the respiration channel, and from the respiration channel to the outflow port;
wherein the bellows further comprises an overpressure protection valve constructed to open and allow a portion of the gas to escape the bellows without entering the respiration housing only while a pressure of the gas in the bellows exceeds a predetermined threshold value. - View Dependent Claims (3, 4, 5, 6, 7, 8, 19, 21, 23, 25, 27, 28, 29, 30, 39)
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2. A manually operable respiration apparatus, comprising:
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a respiration housing having an inflow port opening into the respiration housing, an outflow port opening into the respiration housing, and a respiration channel, the respiration channel opening into the respiration housing for supplying gas to a patient;
a balloon unit connected to the inflow port, the balloon unit comprising a resilient bellows constructed so that after being squeezed from a starting position, the bellows returns to the starting position, the balloon unit further comprising a non-return valve constructed to allow the gas to enter the balloon unit as the bellows returns to the starting position;
a valve system constructed to allow the gas to travel from the inflow port to the respiration channel, and from the respiration channel to the outflow port; and
wherein the balloon unit further comprises an overpressure protection valve at the non-return valve, the overpressure protection valve being constructed to open and allow a portion of the gas to escape the bellows without entering the respiration housing only while a pressure of the gas in the bellows exceeds a predetermined threshold value. - View Dependent Claims (31, 32, 33, 34, 35, 36, 37, 38, 40)
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9. A balloon unit for a manually operated respiration apparatus, comprising:
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a resilient bellows constructed so that after being squeezed from a starting position, the bellows returns to the starting position; and
a first opening and a second opening, the first opening comprising a non-return valve constructed to allow passage of a gas from outside the balloon unit into the bellows;
wherein the bellows further comprises an overpressure protection valve constructed to open and allow a portion of the gas to escape the bellows without passing through the second opening only while a pressure of the gas in the bellows exceeds a predetermined threshold value. - View Dependent Claims (13, 14, 15, 16, 17, 20, 22, 24, 26, 41, 42, 43, 44)
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10. A balloon unit for a manually operated respiration apparatus, comprising:
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a collapsible means for manually increasing pressure of a gas and for resiliently returning to an original shape;
an outlet means for allowing the gas contained in the collapsible means to exit the collapsible means when the pressure on the gas is increased;
an inlet means for allowing the gas to enter the collapsible means as the collapsible means resiliently returns to the original shape;
an overpressure means for allowing a portion of the gas to exit the collapsible means without passing through the outlet means only while the pressure of the gas inside the collapsible means exceeds a predetermined threshold value.
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11. A balloon unit for a manually operated respiration apparatus, comprising:
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a resilient bellows constructed so that after being squeezed from a starting position, the bellows returns to the starting position; and
a combination valve, the combination valve comprising an inlet portion constructed to allow the gas to enter the bellows while the bellows returns to the starting position, the combination valve further comprising an overpressure portion that allows a portion of the gas to exit the bellows only while a pressure of the gas inside the bellows exceeds a predetermined threshold value.
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12. A balloon unit for a manually operated respiration apparatus, comprising:
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a resilient bellows constructed so that after being squeezed from a starting position, the bellows returns to the starting position; and
an overpressure protection valve comprising a movable element that is displaced from a rest position against a spring pressure when a pressure of a gas inside the bellows exceeds a predetermined threshold value; and
a non-return valve that allows gas to enter the bellows only while a pressure inside the bellows is lower than a pressure outside the bellows;
wherein the non-return valve is disposed on the movable element of the overpressure protection valve.
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18. A method for manually applying artificial respiration to a patient, comprising steps of:
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providing a balloon unit for a manually operated respiration apparatus, comprising;
a resilient bellows constructed so that after being squeezed from a starting position, the bellows returns to the starting position; and
an inlet opening and an outlet opening, the inlet opening comprising a non-return valve constructed to allow passage of a gas from outside the balloon unit into the bellows;
wherein the bellows further comprises an overpressure protection valve constructed to allow a portion of the gas to escape the bellows without passing through the outlet opening only while a pressure of the gas in the bellows exceeds a predetermined threshold value;
providing means for transferring the gas from the bellows to the patient; and
squeezing the bellows to supply the gas to lungs of the patient;
wherein the squeezing step is performed so that the bellows are squeezed with sufficient force to allow a portion of the gas to escape through the overpressure protection valve.
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Specification