Portable ventilator system
First Claim
1. A portable ventilator comprising:
- a blower for providing gas flow to a patient, the blower comprising an analog sensor, the analog sensor providing continuous rotor position and speed feedback for closed loop control and a signal, to an analog-to-digital conversion circuit, said feedback for generating a self test for determining performance of the blower;
a noise attenuation system for reducing noise generated by the blower, said noise attenuation system comprising a microphone to receive noise input and a speaker for generating noise output, wherein said noise output cancels a portion of said noise input;
a battery bay configured to retain a removable and rechargeable battery, said rechargeable battery configured to provide power to said blower, to said noise attenuation system, said analog sensor, said analog-to-digital conversion circuit and said speaker; and
a docking cradle interface comprising a base, said base providing an electrical interconnection with the portable ventilator, said docking cradle interface also configured to re-charge said removable and rechargeable battery.
4 Assignments
0 Petitions
Accused Products
Abstract
A portable ventilator uses a ROOTS-type blower as a compressor to reduce both the size and power consumption of the ventilator. Various functional aspects of the ventilator are delegated to multiple subassemblies having dedicated controllers and software that interact with a ventilator processor to provide user interface functions, exhalation control and flow control servos, and monitoring of patient status. The ventilator overcomes noise problems through the use of noise reducing pressure compensating orifices on the ROOTS-type blower housing and multiple baffling chambers. The ventilator is configured with a highly portable form factor, and may be used as a stand-alone device or as a docked device having a docking cradle with enhanced interface and monitoring capabilities.
271 Citations
15 Claims
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1. A portable ventilator comprising:
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a blower for providing gas flow to a patient, the blower comprising an analog sensor, the analog sensor providing continuous rotor position and speed feedback for closed loop control and a signal, to an analog-to-digital conversion circuit, said feedback for generating a self test for determining performance of the blower; a noise attenuation system for reducing noise generated by the blower, said noise attenuation system comprising a microphone to receive noise input and a speaker for generating noise output, wherein said noise output cancels a portion of said noise input; a battery bay configured to retain a removable and rechargeable battery, said rechargeable battery configured to provide power to said blower, to said noise attenuation system, said analog sensor, said analog-to-digital conversion circuit and said speaker; and a docking cradle interface comprising a base, said base providing an electrical interconnection with the portable ventilator, said docking cradle interface also configured to re-charge said removable and rechargeable battery. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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Specification