Anthony Lucio Belisario,Mohammad Qassim Mohammad Khasawneh,Mark Charles Oliver,Mark Sinclair Varney,Paul James Leslie Bennett
申请号：
GB201619898
公开号：
GB2557908A
申请日:
2015.06.05
申请国别(地区):
GB
年份:
2018
代理人:
摘要：
A ventilator for supplying breathing gas to a patient has a cylinder (3) with a piston (2) movable along the cylinder. The piston (2) supports a permanent magnet (21) and the cylinder (3) supports several electromagnetic coils (13, 14, 15, 23, 24) and (25) wound around the cylinder. A sensor (40) mounted on the cylinder (3) generates an output indicative of the position of the piston (2) and supplies this to a control unit (31). The control unit (31) accordingly produces drive signals to the coils (13, 14, 15, 23, 24) and (25) to set up a magnetic field that interacts with the field of the permanent magnet (21) and produce a force that drives the piston (2) along the cylinder (3) to pump air into and out of the cylinder.
