Air assistance apparatus providing fast rise and fall of pressure within one patient's breath
First Claim
1. An apparatus to assist a patient'"'"'s respiration by delivering air to the patient through a mask, comprising an air blower wherein an impeller is rotated by an electromotor comprising a rotor and a stator, said stator having at least three sectors, the rotation of the rotor being enabled by changes of the polarity of the sectors, each sector'"'"'s polarity configuration constituting one step of the rotor'"'"'s rotation, said apparatus further comprising a driving unit controlling changes of the sectors'"'"' polarity configuration such that the electromotor enables the blower to achieve fast accelerations and decelerations within one patient'"'"'s breath step, said breath step consisting of one inspiration and one expiration;
- wherein said driving unit comprises means to sense a back electromotor force generated by the electromotor for changing the sectors'"'"' polarity configuration when the back electromotor force reaches a zero value.
2 Assignments
0 Petitions
Accused Products
Abstract
An apparatus to deliver air to a patient through a mask, including an air blower (33) where the impeller (5) is rotated by an electromotor including a rotor (3) and a stator (8), the stator having at least three sectors (8a, 8b and 8c), the rotation of the rotor being enabled by changes of the polarity of the sectors, each sector'"'"'s polarity configuration constituting one step of the rotor'"'"'s rotation, the apparatus including a driving unit (36) changing the sectors'"'"' polarity when the rotor is at its optimal position, so that the efficiency of the electromotor enables the blower to have fast accelerations and decelerations within one patient'"'"'s breath step, the breath step consisting of one inspiration and one expiration.
68 Citations
27 Claims
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1. An apparatus to assist a patient'"'"'s respiration by delivering air to the patient through a mask, comprising an air blower wherein an impeller is rotated by an electromotor comprising a rotor and a stator, said stator having at least three sectors, the rotation of the rotor being enabled by changes of the polarity of the sectors, each sector'"'"'s polarity configuration constituting one step of the rotor'"'"'s rotation, said apparatus further comprising a driving unit controlling changes of the sectors'"'"' polarity configuration such that the electromotor enables the blower to achieve fast accelerations and decelerations within one patient'"'"'s breath step, said breath step consisting of one inspiration and one expiration;
- wherein said driving unit comprises means to sense a back electromotor force generated by the electromotor for changing the sectors'"'"' polarity configuration when the back electromotor force reaches a zero value.
- 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)
Specification