Intraperitoneal therapy apparatus
AssigneeOlympus Optical Co., Ltd.
InventorsKenji Noda, Naomi Sekino, Yutaka Yanagawa, Takeo Usui, Kowji Tanikawa, Shiro Bitoh
Life of this patent
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Abstract
An intraperitoneal therapy apparatus for cauterizing tissues in a peritoneal cavity, which comprises a pneumoperitoneal device for introducing gas into the peritoneal cavity, thereby to inflate the cavity, a cautery device for cauterizing diseased tissues in the peritoneal cavity inflated by the pneumoperitoneal device, a suction device for removing fume from the peritoneal cavity, and a control circuit for controlling the pneumoperitoneal device and the suction device in accordance with an operation of the cautery device.
Claims19
An intraperitoneal therapy apparatus for cauterizing tissues in a peritoneal cavity, comprising:
- pneumoperitoneal means for introducing gas into the peritoneal cavity to inflate the cavity;
- cautery means for cauterizing diseased tissues in the peritoneal cavity inflated by said pneumoperitoneal means;
- fume-expelling means for expelling fumes from said peritoneal cavity;
- and
- control means for decreasing a gas flow rate in accordance with an increase in an intraperitoneal pressure when the intraperitoneal pressure becomes higher than a threshold value;
- and
- said control means further including means for decreasing a fume-expelling rate in accordance with a decrease in the intraperitoneal pressure when the intraperitoneal pressure becomes lower than a threshold value.
A pneumoperitoneal apparatus which comprises a gas source, a gas-supplying pipe, a tank connected to a middle portion of the gas-supplying pipe, and in which pneumoperitoneal gas is supplied from the gas source through the tank into a peritoneal cavity to inflate the peritoneal cavity, and wherein an intraperitoneal pressure is determined from a pressure drop occurring in the tank when the pneumoperitoneal gas is released from the tank, and a rate of supplying the pneumoperitoneal gas into the peritoneal cavity is controlled in accordance with the intraperitoneal pressure determined, said apparatus further comprising:
- a valve located in said gas-supplying pipe at least at an upstream position relative to said tank, for opening and closing said gas-supplying pipe;
- and
- a controller, responsive to a pressure upstream of said tank, for controlling a time for which said valve opens, such that more pneumoperitoneal gas passes through said tank than the pneumoperitoneal gas filled in said tank due to a pressure drop occurring upstream of said tank, and such that said valve is opened at all times except for a time when pressure in the peritoneal cavity is being checked.
A pneumoperitoneal apparatus which comprises a gas source, a gas-supplying pipe, a tank connected to a middle portion of the gas-supplying pipe, and in which pneumoperitoneal gas is supplied from the gas source through the tank into a peritoneal cavity to inflate the peritoneal cavity, and wherein an intraperitoneal pressure is determined from a pressure drop occurring in the tank when the pneumoperitoneal gas is released from the tank, and a rate of supplying the pneumoperitoneal gas into the peritoneal cavity is controlled in accordance with the intraperitoneal pressure determined, said apparatus further comprising:
- a valve located in said gas-supplying pipe at least at an upstream position relative to said tank, for opening and closing said gas-supplying pipe;
- and
- a controller, responsive to a pressure upstream of said tank, for controlling a time for which said valve opens, such that more pneumoperitoneal gas passes through said tank than the pneumoperitoneal gas filled in said tank due to a pressure drop occurring upstream of said tank;
- and
- wherein said valve comprises first and second pipe opening/closing members which are located in said gas-supplying pipe upstream and downstream of sand tank, respectively.
Dependencies are inferred from the claim text.