Methods and apparatus with improved ventilatory support cycling

US9504795B2 · US · B2

Patent metadata
FieldValue
Publication numberUS-9504795-B2
Application numberUS-201414448093-A
CountryUS
Kind codeB2
Filing dateJul 31, 2014
Priority dateJun 23, 2004
Publication dateNov 29, 2016
Grant dateNov 29, 2016

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  5. First independent claim

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Abstract

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A ventilator that delivers air at different pressures to a patient during inspiratory and expiratory cycles of breathing and that cycles from inspiratory to expiratory operation when the patient's respiratory flow passes a threshold level. The threshold generally increases form the beginning of inspiration to the end of inspiration. The increase can be linear over all or only a proton of the inspiratory cycle, and the threshold can be adjusted so that cycling is prevented during the initial portion of an inspiratory cycle. The minimum and maximum levels may both be functions of peak flow and the threshold may increase as a function of elapsed inspiratory time. The rate at which the threshold increases from a minimum level to a maximum level may be adjustable for individual patient needs and may be determined from previous breaths.

First claim

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What I claim is: 1. A ventilator that delivers air at different pressures to a patient during inspiratory and expiratory cycles of breathing, the ventilator comprising: a blower; a controller; and a memory containing instructions configured to operate the controller to control one or more of a motor current or motor speed associated with the blower and cycling between inspiratory and expiratory operation, and wherein the ventilator cycles from inspiratory to expiratory operation as…

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What does patent US9504795B2 cover?
A ventilator that delivers air at different pressures to a patient during inspiratory and expiratory cycles of breathing and that cycles from inspiratory to expiratory operation when the patient's respiratory flow passes a threshold level. The threshold generally increases form the beginning of inspiration to the end of inspiration. The increase can be linear over all or only a proton of the in…
Who is the assignee on this patent?
Resmed Ltd
What technology area does this patent fall under?
Primary CPC classification A61M16/0069. Mapped technology areas include Human Necessities.
When was this patent published?
Publication date Tue Nov 29 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
What related patents are in patentsdb?
We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).