Patent ID: 7431035
Filing Date: 2008-10-07
Classification: A61M

Abstract:
1. A respiration-synchronizing gas supply unit comprising: respiratory gas generating means; conductor means having one end communicating with said generating means, having open supply means for said respiratory gas at the other end and having automatic on-off valve means between the ends; and respiration phase detection means for detecting at least a portion of a prescribed phase of respiration and control means which controls opening and closing of said automatic on-off valve means based on a respiratory signal which is a detection result from said detection means, wherein said control means has recognition means which recognizes the inspiration phase initial point and the expiration phase initial point, said recognition means does not recognize the initial point of the next inspiration phase during the time between recognition of the inspiration phase initial point and recognition of the expiration phase initial point, and between recognition of the expiration phase initial point and elapse of a predetermined time period, and wherein said recognition means has a standard value which is the value of the respiratory signal at the time of venting of said respiration-synchronizing gas supply unit, and recognizes as the expiration phase initial point the point at which the respiratory signal surpasses said standard value from an inspiration phase side to an expiration phase side.