Artificial respiration device with absolute pressure sensor and differential pressure sensor
A differential pressure sensor, pressure sensor technology, applied in respirator and other directions, can solve problems such as damaged pressure regulation quality, inability to measure pressure drop, and reduced resolution
Inactive Publication Date: 2017-08-25
AIR LIQUIDE MEDICAL
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Problems solved by technology
Typically, however, differential pressure sensors on ventilators cannot measure negative relative pressures, at least not this type of pressure drop
One solution consists in using sensors designed to measure these types of pressure drops, but because their measurement range will be wider, their resolution will be reduced, resulting in compromised quality of pressure regulation
Method used
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Embodiment Construction
[0037] figure 1 A schematic diagram of an artificial respiration device or more simply a ventilator 10 according to the invention is shown.
[0038] The ventilator 10 comprises a patient circuit 1 with gas conduits allowing gas to be administered to the patient to be supplied from one or more gas sources 8, 9a, 9b, or conversely, gas exhaled by the patient to be collected.
[0039] The patient circuit 1 comprises in particular an inspiratory branch 2 and an expiratory branch 3 forming a circuit. These inspiratory 2 and expiratory 3 branches are interconnected via a Y-piece 6 located at the patient interface such as a mask, tracheal probe or any other device for administering breathing gas to the patient. Alternatively, however, the patient circuit 1 may comprise only one inspiratory branch 2 , ie no expiratory branch.
[0040] According to the invention, the differential pressure sensor 4 and the absolute pressure sensor 5 are located on the inspiratory branch 2 of the venti...
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This invention relates to an artificial breathing apparatus comprising a patient circuit (1) carrying gas comprising an inspiratory branch (2), and at least one pressure sensor arranged so as to operate at least one pressure measurement within the patient circuit (1), characterised in that it comprises a differential pressure sensor (4) and an absolute pressure sensor (5) located on the inspiratory branch (2), and control means cooperating with the differential pressure sensor (4) and the absolute pressure sensor (5) to detect a failure or malfunction of one or other of the said differential pressure (4) and absolute pressure sensor (5). The apparatus covered by the invention can be used in the treatment of chronic obstructive pulmonary disease (COPD), acute respiratory distress syndrome (ARDS) or in post-operative care.
Description
technical field [0001] The present invention relates to an artificial respiration device or device comprising redundant absolute and differential pressure sensors in the inspiratory branch of a patient circuit. Background technique [0002] Respiratory failure patients, such as those with chronic obstructive pulmonary disease (COPD), acute respiratory distress syndrome (ARDS), or those requiring post-operative care requiring respiratory assistance, i.e. they require the supply of breathing gas with the aid of an artificial respiration device , such as air, oxygen, or oxygen-enriched air. [0003] In certain modes of operation, artificial breathing apparatus or devices - commonly referred to as ventilators - regulate the pressure of the breathing gas to be delivered to the patient. This adjustment takes place by means of a pressure measuring device located in the inspiratory branch of the ventilator. [0004] Failure of this measuring device can lead to incorrect adjustment...
Claims
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IPC IPC(8): A61M16/00
CPCA61M16/00A61M16/204A61M2016/0027A61M2016/0039A61M16/0051A61M16/024
Inventor T·布兰格C·科林M·利巴尔迪
Owner AIR LIQUIDE MEDICAL