公开(公告)号：US10357624B2

公开(公告)日：2019-07-23

申请号：US15370255

申请日：2016-12-06

Applicant: iAsset ag

Inventor： Matthias Van Der Staay ,  Harri Friberg

IPC: A61M16/00 ,  G16H50/50 ,  G16H20/40 ,  A61M16/10

Abstract: The invention comprises a ventilation apparatus and method for operating a ventilator of a ventilator apparatus, wherein in the method at least one duration ratio factor is set in a computing system of the ventilator apparatus; at least one minute volume, at least one functional dead space volume and at least one time constant are determined; a respiration frequency is computed, based on a previously defined lung model, depending on said determined parameters, where said computed respiration frequency is optimized on at least one minimum of a delivered parameter, which is induced to a patient using said ventilator; an inspiratory time and an expiratory time are determined based on said computed respiration frequency and said duration ratio factor; at least one tidal volume based on said previously computed respiration frequency and said determined minute volume is computed; and a delivered respiratory parameter of the ventilator is closed loop controlled.

公开(公告)号：US12023440B2

公开(公告)日：2024-07-02

申请号：US16438646

申请日：2019-06-12

Applicant: iAsset AG

Inventor： Matthias Van Der Staay ,  Harri Friberg

IPC: A61M16/00 ,  A61M16/10 ,  G16H20/40 ,  G16H50/50

CPC classification number: A61M16/0051 ,  A61M16/0069 ,  A61M16/024 ,  G16H20/40 ,  G16H50/50 ,  A61M2016/0021 ,  A61M2016/0027 ,  A61M2016/0036 ,  A61M2016/1025 ,  A61M2205/3303 ,  A61M2205/3344 ,  A61M2205/50 ,  A61M2205/505 ,  A61M2230/432 ,  A61M2230/435 ,  A61M2230/46

Abstract: The invention is related to ventilation apparatuses and methods for operating a ventilator of a ventilator apparatus. In the method at least one duration ratio factor is set in a computing system of the ventilator apparatus; at least one minute volume, at least one functional dead space volume and at least one time constant are determined; a respiration frequency is computed, based on a previously defined lung model, depending on the determined parameters. The computed respiration frequency is optimized on at least one minimum of a delivered parameter, which is induced to a patient using the ventilator; an inspiratory time and an expiratory time are determined based on the computed respiration frequency and the duration ratio factor; at least one tidal volume based on the previously computed respiration frequency and the determined minute volume is computed; and a delivered respiratory parameter of the ventilator is closed loop controlled.

公开(公告)号：US10905357B2

公开(公告)日：2021-02-02

申请号：US15859425

申请日：2016-07-01

Applicant: iAsset ag

Inventor： Harri Friberg ,  Jakob Daescher

IPC: A61B5/087 ,  G01F1/36 ,  G01F1/42 ,  A61M16/00

Abstract: The invention relates to a respiratory flow sensor (11) comprising a flow tube (12) which has a flow channel (13) and tube connections for tubes at the free ends (15, 17) of the flow tube, a cover flap (32) which is arranged in the flow channel (13) and divides the flow channel (13) into a first flow channel section (18) and a second flow channel section (19), and comprising connections (22, 23) which open into the flow channel (13) on both sides of the cover flap (32) and which are used to decrease the pressure difference generated by the cover flap (32). A drainage device (41) which comprises drain grooves (42, 43) is provided in the flow channel (13), and the cover flap (32) has a hinge region which is formed by a first slot and a second H-shaped slot.