Patent ID: 8840580
Filing Date: 2014-09-23
Classification: A61B,A61M

Abstract:
1. A gas supply system for supplying gas to a patient, the gas supply system comprising: a source of gas adapted to supply insufflation gas of a predetermined kind; a first delivering path that delivers the gas to be insufflated into an abdominal cavity of the patient; a second delivering path that delivers the gas to be insufflated into a luminal cavity of the patient; a first pressure regulating block arranged in the first delivering path to regulate a pressure of the gas, supplied from the source of gas, at a pressure level proper for supply of the gas to the abdominal cavity, wherein the first pressure regulating block comprises a first pressure reducing unit that reduces the pressure of the gas from the source of gas down to a first pressure level and a first pressure regulator that regulates the pressure of the gas from the first pressure reducing unit at the pressure level proper for the supply of the gas to the abdominal cavity in response to control performed on information indicative of a state of the gas flowing through the first delivering path; a second pressure regulating block arranged in the second delivering path to regulate the pressure of the gas, supplied from the source of gas, at a pressure level proper for supply of the gas to the luminal cavity, wherein the second pressure regulating block comprises a second pressure reducing unit that reduces the pressure of the gas from the source of gas down to a second pressure level and a second pressure regulator that regulates the pressure of the gas from the second pressure reducing unit at the pressure level proper for the supply of the gas to the luminal cavity in response to control performed on information indicative of a state of the gas flowing through the second delivering path; a switchover device that performs a selective switchover between i) supply of the gas of which pressure is regulated to be proper for the abdominal cavity and which is delivered through the first delivering path and ii) supply of the gas of which pressure is regulated to be proper for the luminal cavity and which is delivered through the second delivering path; a controller that controls operations of the first and second pressure regulators and the switchover device based on the information indicative of a state of the as flowing through the first and second delivering paths; and a single gas supply port that receives the gas from the switchover device and supplies the received gas outside the gas supply system, wherein the source of gas is a source of insufflation gas of one kind, wherein the second pressure regulating block comprises a second electromagnetic valve disposed after the second pressure reducing unit in the second delivering path to selectively open and close the second delivering path to interrupt the flow of the gas passing through the second delivering path; and a second flow rate sensor disposed in the second delivering path for detecting a flow rate of the gas flowing through the second delivering path, the flow rate of the gas flowing through the second delivering path being included in the information indicative of the state of the gas flowing therethrough, wherein the controller is adapted to control opening and closing operations of the second electromagnetic valve depending on information indicative of the flow rate detected by the second flow rate sensor.