Patent ID: 7040315
Filing Date: 2006-05-09
Classification: A61M

Abstract:
1. An arrangement for anaesthetising a living creature and maintaining said creature anaesthetised, by administering to said creature an infused volume of an anaesthesia inducing pharmaceutical in liquid phase per unit of time, said arrangement comprising: a. at least one lung ventilator unit, an insufflation hose extending from said at least one lung ventilator unit to an expiration valve for being oriented adjacent to or mouth-proximal said creature, a measuring probe spaced from said at least one lung ventilator unit, and a plurality of further hoses extending from said at least one lung ventilator unit, b. at least one infusion unit having parts related to said infusion unit co-ordinated to said arrangement, a cannula, and a hose extending from said infusion unit and operatively connected to said cannula, c. first means related to a computer unit for monitoring unit-related criteria, d. second means related to said computer unit for monitoring creature-related criteria, e. a display unit exposing a display surface for said unit-related criteria and said creature-related criteria, f. said valve having a first part and a second part that each perform different functions, said first part being included in the at least one ventilator unit for applying an over pressure to one of said hoses, and said second part being moveable from a first valve member position to a second valve member position, so as to force insufflation gas into the creature when said second part is in said first valve member position and to enable expiration gas to pass freely from said creature when said second part in said second valve member position, g. said plurality of hoses extending from said at least one ventilator unit are adapted as pressure-measuring hoses for measuring pressure differences and pressure variations generated by a gas flow in said measuring probe adjacent said valve by using said insufflation gas flow, h. said plurality of hoses extending from said at least one ventilator unit further including a gas analysis hose operatively associated with said measuring probe and adapted to enable flow of at least one of insufflation gas and expiration gas to an evaluating unit for gas analysis, i. said gas analysis hose and said plurality of hoses extending from said at least one ventilator unit are connected to equipment for sensing and evaluating selected criteria, said selected criteria including a time wise variation of the at least one of air path pressure and a flow rate, a VL-value denoting the volume of insufflated gas and a volume valve of expired gas, and/or a FiO2 value denoting a fraction of inspired oxygen content in the insufflation gas and in the expiration gas, j. wherein a plurality of values obtained from said evaluating unit are sent to said computer unit, said plurality of values including: k. a HR value denoting a heart frequency, l. a NIBP-value denoting a systolic blood pressure, a mean value and a diastolic blood pressure, and/or m. a SpO n. the plurality of values representing item “k” to “m” are each received by their respective control unit, and wherein each of said control units is connected to said computer unit, o. an information carrying line connecting said computer unit to said display unit, p. said information carrying line being adapted for a two-way information exchange so that the computer unit is able to transmit desired values to the display unit, q. whereby a selected surface area of said display unit can be used to send instructions and messages to said computer unit, and r. said computer unit being equipped with an expert system wherein a utilised computer program is adapted to sense and calculate and interpret obtained measurements values and set alarm limits.