Constant pressure apparatus of an endoscope
First Claim
1. A system for regulating the gas pressure within a cavity, comprising:
- a probe for insertion into the cavity;
a suction line having one end disposed within the probe for removing gas from the cavity;
a valve connected to the other end of the suction line;
a first gas supply line also having one end disposed within the probe;
a valve connected to the other end of the gas supply line;
a pressure detecting means connected to the other end of the gas supply line between the valve and the probe;
a second gas supply line having one end disposed within the probe;
a valve connected to the other end of the second gas supply line; and
a control means for receiving an indication of the pressure detected by the pressure detecting means when the first gas supply line is closed and selectively opening and closing the valves in the suction line and the second gas supply line to achieve the desired gas pressure within the cavity.
1 Assignment
0 Petitions
Accused Products
Abstract
A constant pressure apparatus of an endoscope includes a gas supplying conduit for cleaning an optical observation system, a sucking conduit for constantly holding the inner pressure of a body, and an insertion port for inserting a device for medical treatment into the body. The constant pressure apparatus comprises a pressure detector disposed in a portion of the gas supplying conduit and detecting the pressure in the gas supplying conduit. The pressure detector is electrically connected to a control device for controlling the inner pressure of the body. A gas supplying device for adjusting the inner pressure of the body is disposed in the insertion port and may comprise a fiber for transmitting laser into which a cooling conduit for receiving carbon dioxide is inserted. Electromagnetic valves are disposed in the gas supplying conduit, the sucking conduit and the gas supplying means, respectively, and are operated by signals from the control device.
115 Citations
13 Claims
-
1. A system for regulating the gas pressure within a cavity, comprising:
-
a probe for insertion into the cavity; a suction line having one end disposed within the probe for removing gas from the cavity; a valve connected to the other end of the suction line; a first gas supply line also having one end disposed within the probe; a valve connected to the other end of the gas supply line; a pressure detecting means connected to the other end of the gas supply line between the valve and the probe; a second gas supply line having one end disposed within the probe; a valve connected to the other end of the second gas supply line; and a control means for receiving an indication of the pressure detected by the pressure detecting means when the first gas supply line is closed and selectively opening and closing the valves in the suction line and the second gas supply line to achieve the desired gas pressure within the cavity. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
-
-
9. A constant pressure apparatus for an endoscope including an optical observation system at its end portion, an injective conduit means for transmitting a gas to clean the optical observaiton system, and an insertion port means through which a medical device may be inserted, the constant pressure apparatus comprising:
-
pressure measuring means connected to a portion of hte injective conduit means outside of the scope section for measuring the pressure inside the injective conduit means; extractive conduit means for maintaining the inner pressure of a body to be examined; and means for controlling the inner pressure of the body by controlling gas transmissions through the injective conduit means and the extractive conduit means. - View Dependent Claims (10, 11, 12, 13)
-
Specification