Improvements to Electrically Operable Resuscitators
First Claim
1. An electrically operable resuscitation device comprising:
- a) a pump includinga rigid cylinder including at least one gas inlet and at least one gas outlet,a piston to travel in said cylinder, andat least one valve, the or each valve configured to allow gas to be displaced into said cylinder through said at least one gas inlet during at least one of a first stroke direction and/or a second stroke direction of said piston in said cylinder, and for allowing gas to be displaced through said at least one gas outlet during an opposite of said at least one of the first stroke direction and/or second stroke direction of said piston in said cylinder,b) a motor, selected from one of a stepper motor and feedback motor or a stepper motor with feedback and linear motor, operatively connected to said piston to move said piston in said cylinder,c) a patient interface in ducted fluid connection with said pump to receive gas via said at least one gas outlet and to deliver said gas to said patient.
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Accused Products
Abstract
The present invention relates to an electrically operable resuscitation device comprising a pump including a rigid cylinder including at least one gas inlet and at least one gas outlet, a piston to travel in said cylinder, and at least one valve, the or each valve configured to allow gas to be displaced into said cylinder through said at least one gas inlet during at least one of a first stroke direction and second stroke direction of said piston in said cylinder, and for allowing gas to displaced through said at least one gas outlet during an opposite of said at least one of the first stroke direction and second stroke direction of said piston in said cylinder; a motor, selected from one of a stepper motor and feedback motor and stepper motor with feedback and linear motor, operatively connected to said piston to move said piston in said cylinder; a patient interface in ducted fluid connection with said pump to receive gas via said at least one gas outlet and to deliver said gas to said patient.
88 Citations
81 Claims
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1. An electrically operable resuscitation device comprising:
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a) a pump including a rigid cylinder including at least one gas inlet and at least one gas outlet, a piston to travel in said cylinder, and at least one valve, the or each valve configured to allow gas to be displaced into said cylinder through said at least one gas inlet during at least one of a first stroke direction and/or a second stroke direction of said piston in said cylinder, and for allowing gas to be displaced through said at least one gas outlet during an opposite of said at least one of the first stroke direction and/or second stroke direction of said piston in said cylinder, b) a motor, selected from one of a stepper motor and feedback motor or a stepper motor with feedback and linear motor, operatively connected to said piston to move said piston in said cylinder, c) a patient interface in ducted fluid connection with said pump to receive gas via said at least one gas outlet and to deliver said gas to said patient. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 63, 77)
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35. A device as claimed in 34 wherein fluid connection between said outlet of said cylinder and the patient interface is defined in part by a flexible conduit and said flow controller is located more proximate said patient interface than said cylinder.
- 59. A resuscitator to deliver gas to a patient to be resuscitated that includes a positive displacement pump that is operated by a linear motor.
- 64. A gas flow controller for a resuscitator that includes a pump to pressurise a gas for delivery to a patient and a patient interface, the controller interposed between said pump and interface and including a one way valve that allows gas to be displaced from the pump towards the patient interface and prevents gas from flowing through the one way valve in the opposite direction.
- 74. A resuscitator device that operates to define an inhalation period during which a gas is displaced from the device to the patient and an exhalation period where no gas is displaced from the device to the patient and any gas received from the patient is exhausted from the device, wherein the device utilises an accurate positional control motor (eg a linear motor or rotary stepper motor) that controls a pump, the motor being controlled to operate the pump during the inhalation period and the motor being controlled to stop the pump during the exhalation period.
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80. A resuscitator as herein described with reference to any one of the accompanying drawings.
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81. A gas flow controller as herein described with reference to any one of the accompanying drawings.
Specification