Method and arrangement for identifying an existing connection in apparatus for the ventilation of a patient
First Claim
1. A method for use with equipment for ventilating a patient with breathing gas, the equipment having a mechanical ventilating part for supplying breathing gas, the mechanical ventilating part being connected to a switching valve, said valve comprising a single, unitary structure having first and second positions establishing first and second gas communication paths in the valve, the equipment having a manually operable part for supplying breathing gas and a patient circuit part for providing breathing gas to the patient, the manually operable part and the patient circuit part being connected to the valve, the manually operable part and the patient circuit part being capable of connection to the valve in a correct connection state in which breathing gas is supplied from the mechanical ventilating part to the patient circuit part when the valve is in a first position and from the manually operable part to the patient circuit part when the valve is in a second position, the manually operable part and the patient circuit part also being capable of being connected to the valve in an incorrect connection state, said method identifying the correctness of the connection state of the manually operable part and the patient circuit part to the valve and comprising the steps of:
- moving the valve to one of the first and second positions to establish one of the first or second gas communication paths in the valve;
operating the mechanical ventilating part if the valve has been moved to the first position or the manually operable part if the valve has been moved to the second position;
sensing a gas property condition associated with a selected one of the gas communication paths;
comparing the sensed gas property condition with information corresponding to gas property conditions existing when the patient circuit part and manually operable part are correctly connected to the switching valve; and
determining the correctness of the connection of the manually operable part and patient circuit part to the valve from the comparison of the gas property condition information obtained from said sensing and from the information corresponding to correct connection gas property conditions.
1 Assignment
0 Petitions
Accused Products
Abstract
A method and arrangement in connection with the ventilation of a patient, wherein the lungs of the patient are ventilated mechanically by means of a ventilator or manually by means of a reservoir bag as the patient'"'"'s own respiratory activity is insufficient or totally prevented. In order to eliminate a faulty connection, the behaviour of the pressure or the flow in the patient circuit, in the circuit associated with the ventilator or in the circuit associated with the reservoir bag is monitored in connection with ventilation and the obtained information is compared with the desired operation.
33 Citations
27 Claims
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1. A method for use with equipment for ventilating a patient with breathing gas, the equipment having a mechanical ventilating part for supplying breathing gas, the mechanical ventilating part being connected to a switching valve, said valve comprising a single, unitary structure having first and second positions establishing first and second gas communication paths in the valve, the equipment having a manually operable part for supplying breathing gas and a patient circuit part for providing breathing gas to the patient, the manually operable part and the patient circuit part being connected to the valve, the manually operable part and the patient circuit part being capable of connection to the valve in a correct connection state in which breathing gas is supplied from the mechanical ventilating part to the patient circuit part when the valve is in a first position and from the manually operable part to the patient circuit part when the valve is in a second position, the manually operable part and the patient circuit part also being capable of being connected to the valve in an incorrect connection state, said method identifying the correctness of the connection state of the manually operable part and the patient circuit part to the valve and comprising the steps of:
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moving the valve to one of the first and second positions to establish one of the first or second gas communication paths in the valve; operating the mechanical ventilating part if the valve has been moved to the first position or the manually operable part if the valve has been moved to the second position; sensing a gas property condition associated with a selected one of the gas communication paths; comparing the sensed gas property condition with information corresponding to gas property conditions existing when the patient circuit part and manually operable part are correctly connected to the switching valve; and determining the correctness of the connection of the manually operable part and patient circuit part to the valve from the comparison of the gas property condition information obtained from said sensing and from the information corresponding to correct connection gas property conditions. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method for use with equipment for ventilating a patient with breathing gas, the equipment having a mechanical ventilating part for supplying breathing gas, the mechanical ventilating part being connected to a switching valve, said valve comprising a single, unitary structure having first and second positions establishing first and second gas communication paths in the valve, the equipment having a manually operable part for supplying breathing gas and a patient circuit part for providing breathing gas to the patient, the manually operable part and the patient circuit part being connected to the valve, the manually operable part and the patient circuit part being capable of connection to the valve in a correct connection state in which breathing gas is supplied from the mechanical ventilating part to the patient circuit part when the valve is in a first position and from the manually operable part to the patient circuit part when the valve is in a second position, the manually operable part and the patient circuit part also being capable of being connected to the valve in an incorrect connection state, said method identifying the correctness of the connection state of the manually operable part and the patient circuit part to the valve and comprising the steps of:
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moving the valve to the first position to establish the first gas communication path in the valve; operating the mechanical ventilating part; sensing a gas property condition existing in one of the manually operable part and patient circuit part; comparing the sensed gas property condition with information corresponding to a gas property condition found in the manually operable part or the patient circuit part when the manually operable part and patient circuit part are correctly connected to the valve, and determining the correctness of the connection of the manually operable part and patient circuit part to the valve from said comparison of the sensed gas property condition and the information corresponding to correct connection gas property conditions. - View Dependent Claims (13)
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14. Apparatus for use with equipment for ventilating a patient with breathing gas, the equipment having a mechanical ventilating part for supplying breathing gas, the mechanical ventilating part being connected to a switching valve, said valve comprising a single, unitary structure having first and second positions establishing first and second gas communication paths in the valve, the equipment having a manually operable part for supplying breathing gas and a patient circuit part for providing breathing gas to the patient, the manually operable part and the patient circuit part being connected to the valve, the manually operable part and the patient circuit part being capable of connection to the valve in a correct connection state in which breathing gas is supplied from the mechanical ventilating part to the patient circuit part when the valve is in a first position and from the manually operable part to the patient circuit part when the valve is in a second position, the manually operable part and the patient circuit part also being capable of being connected to the valve in an incorrect connection state, said apparatus identifying the correctness of the connection state of the manually operable part and the patient circuit part to the valve and comprising:
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means coupled to one of the manually operable part, patient circuit part, and mechanical ventilating part for sensing a gas property condition existing in at least one of said first and second gas communication paths; comparison means for comparing a sensed gas property condition with information corresponding to gas property conditions existing when the patient circuit part and manually operable part are correctly connected to the switching valve; and determining means coupled to said comparison means for determining the correctness of the connection of the manually operable part and patient circuit part to the valve from the comparison of the gas property condition information obtained from said sensing means and from the information corresponding to correct connection of gas property conditions. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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26. An apparatus for use with equipment for ventilating a patient with breathing gas, the equipment having a mechanical ventilating part for supplying breathing gas, the mechanical ventilating part being connected to a switching valve, said valve comprising a single, unitary structure having first and second positions establishing first and second gas communication paths in the valve, the equipment having a manually operable part for supplying breathing gas and a patient circuit part for providing breathing gas to the patient, the manually operable part and the patient circuit part being connected to the valve, the manually operable part and the patient circuit part being capable of connection to the valve in a correct connection state in which breathing gas is supplied from the mechanical ventilating part to the patient circuit part when the valve is in a first position and from the manually operable part to the patient circuit part when the valve is in a second position, the manually operable part and the patient circuit part also being capable of being connected to the valve in an incorrect connection state, said apparatus identifying the correctness of the connection state of the manually operable part and the patient circuit part to the valve when the valve is in the first position and the mechanical ventilating means is operated, said apparatus comprising:
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means for sensing a gas property condition existing in one of the manually operable part and patient circuit part; comparison means for comparing the sensed gas property condition with information corresponding to a gas property condition found in the manually operable part or patient circuit part when the manually operable part and patient circuit part are correctly connected to the valve; and means for determining the correctness of the connection of the manually operable part and patient circuit part to the valve from the comparison of the sensed gas property condition and said information corresponding to correct connection gas property conditions. - View Dependent Claims (27)
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Specification