초록 ▼

An adaptor for converting patient breathing apparatus from the “circle”to the Bain circuit configuration. The adaptor facilitates rapid conversion of the patient breathing circuit without necessitating duplication of breathing circuit components and without the need for an expensive Bain circuit mou

An adaptor for converting patient breathing apparatus from the “circle”to the Bain circuit configuration. The adaptor facilitates rapid conversion of the patient breathing circuit without necessitating duplication of breathing circuit components and without the need for an expensive Bain circuit mount. The adaptor substantially reduces the complexity of the conversion operation, thereby minimizing the possibility that an erroneous circuit may be established with the attendant possibility for patient injury.

대표청구항 ▼

Apparatus for converting patient breathing equipment from a first circle circuit configuration to a second configuration, the first circle circuit configuration including a first one-way valve having an inlet for receiving gas from a source and an outlet for delivery of gas passing through the first

Apparatus for converting patient breathing equipment from a first circle circuit configuration to a second configuration, the first circle circuit configuration including a first one-way valve having an inlet for receiving gas from a source and an outlet for delivery of gas passing through the first valve, said first one-way valve outlet adapted to be connected to a first inspiratory conduit for carrying the gas from the first outlet of the first valve to the patient, a second one-way valve having an inlet and an outlet, said second one-way valve inlet adapted to be connected to a first expiratory conduit for receiving gas expired from the patient and delivering the received gas to the inlet of the second one-way valve, means connecting the outlet of the second one-way valve to the inlet of the first valve, pressure relief means connected between the outlet of the second one-way valve and the inlet of the first one-way valve for relieving overpressure, a first fresh gas supply conduit adapted to be coupled one-way the gas source leading into the inlet of the first one-way valve such that fresh gas is supplied to the first inlet, said coverting apparatus including means for blocking the first fresh gas supply conduit such that the patient breathing apparatus can be used in the second configuration, the second configuration including a second fresh gas supply conduit having a second fresh gas supply conduit outlet inlet for receiving fresh gas directly from a gas source and a second fresh gas supply conduit having means for delivery of such fresh gas to the patient, an inspiratory/expiratory conduit partially surrounding the second fresh gas supply conduit, the inspiratory/expiratory conduit having at one end thereof an exhaust gas outlet connected to the first one-way valve outlet; the inspiratory/expiratory conduit including means at the opposite end thereof for delivering fresh gas to a patient and for receiving gases expired by a patient, the opposite end of the inspiratory/expiratory conduit communicating with the second fresh gas supply conduit outlet, the inspiratory/expiratory conduit acting as a reservoir for storing fresh gas for delivery to the patient during inspiration and as a channel for exhausting exhaled gases during patient expiration, the apparatus further comprising a third conduit for coupling the exhaust gas outlet and the first one-way valve outlet to the second inlet of the second valve to the second inlet of the second valve whereby gas exhaled by a patient through the inspiratory/expiratory conduit passes through the exhaust outlet to the second inlet of the second one-way valve and also and gas emitted from the outlet of the first one-way valve passes to said inlet of the second one-way valve.