Water feeding device for endoscope

Abstract

A water feeding device for an endoscope, comprises: a first water feeding pipe line connected to an in-endoscope water feeding pipe line that feeds liquid into an object under observation; a second water feeding pipe line that is introduced into the object under observation through a treatment instrument insertion channel of the endoscope and supplies liquid; a water feeding pump portion that supplies liquid stored in a storage portion by a pump; and a pipe line switching section that selectively supplies the liquid stocked in the storage portion to the first and second water feeding pipe lines.

1 . A water feeding device for an endoscope, comprising: 
 a first water feeding pipe line connected to an in-endoscope water feeding pipe line that feeds liquid into an object under observation;    a second water feeding pipe line that is introduced into the object under observation through a treatment instrument insertion channel of the endoscope and supplies liquid;    a water feeding pump portion that supplies liquid stored in a storage portion by a pump; and    a pipe line switching section that selectively supplies the liquid stocked in the storage portion to the first and second water feeding pipe lines.    
   
   
       2 . The water feeding device for the endoscope according to  claim 1 , 
 wherein the pipe line switching section comprises a change-over valve that switches the first water feeding pipe line and the second water feeding pipe line, the change-over valve being disposed between the water feeding pump portion and the first and second water feeding pipe lines.    
   
   
       3 . The water feeding device for the endoscope according to  claim 1 , 
 wherein the pipe line switching section comprises a first pump for the first water feeding pipe line and a second pump for the second water feeding pipe line, the first and second pump being provided in the water feeding pump portion, and    the first and second pumps are operable to be switched to each other.    
   
   
       4 . The water feeding device for the endoscope according to  claim 2 , further comprising a connecting pipe that connects the water feeding pump portion and the change-over valve, 
 wherein each of the connecting pipe and the first water feeding pipe line comprises a hard synthetic resin pipe.    
   
   
       5 . A water feeding device for an endoscope, comprising: 
 a water feeding pump portion that supplies liquid in a storage portion by a pump;    a water feeding pipe line that is disposed so as to pass from the water feeding pump portion through the endoscope and supplies liquid to an object under observation; and    one of an orifice and an automatic opening/closing type pressure relief valve, that limits the maximum water feeding pressure and is provided to a water feeding pipe line disposed between the water feeding pump portion and the endoscope.    
   
   
       6 . The water feeding device for the endoscope according to  claim 5 , 
 wherein at least one of a first water feeding pipe line connected to the water feeding pipe line in the endoscope and a second water feeding pipe line to be introduced through a treatment instrument insertion channel of the endoscope is connected to the water feeding pump portion, and    said one of the orifice and the automatic opening/closing type pressure relief valve is provided to an output port pipe connected to said at least one of the first and second water feeding pipe.    
   
   
       7 . The water feeding device for the endoscope according to  claim 5 , further comprising a pipe line that returns liquid flowing out from said one of the orifice and the automatic opening/closing type pressure relief valve to the storage portion, the pipe line being provided between: one of the orifice and the pressure relief valve; and the storage portion.  
   
   
       8 . The water feeding device for an endoscope according to  claim 1 , 
 wherein the storage portion comprises a liquid container, the liquid container comprising: a fitting member that is fitted to and suspended by a suspending member; a main body that stocks liquid; and a rubber liquid take-out portion that is disposed at a lower portion of the main body and through which an injection needle penetrates,    wherein the water feeding device further comprises a connection pipe line that is connected to the water feeding pump portion and to which the injection needle is secured, and    wherein liquid is fed from the liquid container to the water feeding pump portion under the state that the liquid container is suspended by the suspending member and the injection needle is stung.    
   
   
       9 . The water feeding device for the endoscope according to  claim 8 , 
 wherein the connection pipe line to which the injection needle is secured comprises a connector that selectively connecting the injection needle and a take-out pipe line equipped to a tank.    
   
   
       10 . The water feeding device for an endoscope according to  claim 5 , 
 wherein the storage portion comprises a liquid container, the liquid container comprising: a fitting member that is fitted to and suspended by a suspending member; a main body that stocks liquid; and a rubber liquid take-out portion that is disposed at a lower portion of the main body and through which an injection needle penetrates,    wherein the water feeding device further comprises a connection pipe line that is connected to the water feeding pump portion and to which the injection needle is secured, and    wherein liquid is fed from the liquid container to the water feeding pump portion under the state that the liquid container is suspended by the suspending member and the injection needle is stung.    
   
   
       11 . The water feeding device for the endoscope according to  claim 10 , 
 wherein the connection pipe line to which the injection needle is secured comprises a connector that selectively connecting the injection needle and a take-out pipe line equipped to a tank.