Title:
PRESSURE CONTROL DEVICE FOR CUFFED ENDOTRACHEAL TUBES AND LARYNGEAL MASKS
Document Type and Number:
WIPO Patent Application WO/2018/045555
Kind Code:
A1
Abstract:
A pressure control device for maintaining the pressure level of a cuff (100b) of a medical device, wherein the pressure control device comprises an air reservoir (2) filled with air at a pressure between a first predetermined pressure and a second predetermined pressure that is higher than the first predetermined pressure; a first valve (6), which is connected to the air reservoir (2) at one end and to an inflating tube (100c) for the cuff (100b) at the other end so as to form a first air flowing path (A), wherein when the cuff (100b) pressure is below the first predetermined pressure, the first valve (6) allows air in the air reservoir (2) to flow to the cuff (100b) through the first air flowing path (A) so as to increase the cuff (100b) pressure to a level above the first predetermined pressure; and a second valve (7), which is connected to the air reservoir (2) at one end and to the inflating tube (100c) for the cuff (100b) at the other end so as to form a second and parallel air flowing path (B), wherein when the cuff (100b) pressure is above the second predetermined pressure, the second valve (7) allows air in the cuff (100b) to flow to the air reservoir (2) through the second air flowing path (B) so as to decrease the cuff (100b) pressure to a level below the second predetermined pressure. A cuffed endotracheal tube with the pressure control device, and a cuffed laryngeal mask (100) with the pressure control device.
Inventors:
YI ZHIGUANG (CN)
Application Number:
PCT/CN2016/098557
Publication Date:
March 15, 2018
Filing Date:
September 09, 2016
Export Citation:
Assignee:
COVIDIEN LP (US)
YI ZHIGUANG (CN)
YI ZHIGUANG (CN)
International Classes:
A61M16/04; A61M25/10
Foreign References:
| US20140276178A1 | 2014-09-18 | |||
| DE19826690C1 | 1999-11-25 | |||
| CN201239408Y | 2009-05-20 | |||
| US20110253137A1 | 2011-10-20 | |||
| US4471775A | 1984-09-18 | |||
| CN102872512A | 2013-01-16 |
Attorney, Agent or Firm:
CCPIT PATENT AND TRADEMARK LAW OFFICE (CN)
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