Method and relevant apparatus for nasal ventilation,...

Details Method and relevant apparatus for nasal ventilation,... Method and relevant apparatus for nasal ventilation,...

2006-05-05

2010-10-19

Yu, Justine R (Department: 3771)

Surgery

Respiratory method or device

Means for supplying respiratory gas under positive pressure

C128S204210, C128S204180

Reexamination Certificate

active

07814906

ABSTRACT:
In a method for nasal ventilation and relevant apparatus, particularly for flow-synchronized neonatal assisted ventilation, wherein F(t) is a signal proportional to the ventilation flow, the following steps are performed:(a) inspiration, having a time length Ti, during which air is introduced at an inspiration pressure;(b) expiration, having a time length Te, during which the introduction of air is interrupted;(c) return to step (a);with a flow threshold Ftr, during the expiration step (b) the following steps are provided:(b1) a waiting step having a time length γ before activation of computation of the leakages; and(b2) a step of leakage computation, having a time length δ, so that γ+δ=Te, wherein if a normalized signal F′ (t), obtained by a processing by way of an algorithm of the surveyed signal F(t), exceeds the threshold Ftr, a spontaneous respiration activity is detected and the inspiration step (a) is reactivated.

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