Living body tissue harvesting apparatus

Abstract

In an apparatus to harvest a living body tissue, in order to prevent pressure in a body cavity exceeding a predetermined value, a living body tissue harvesting apparatus according to the present invention has a grip section and an insertion section to be inserted into the body cavity. Further, in order to discharge a predetermined gas from an opening part provided on the insertion section, the living body tissue harvesting apparatus has a gas supplying tube for supplying the predetermined gas into the insertion section, and a space for releasing the predetermined gas supplied into the body cavity.

1 . A living body tissue harvesting apparatus having a grip section and a tubular insertion section connected to the grip section and to be inserted into a body cavity, the living body tissue harvesting apparatus comprising: 
 a gas supplying path for supplying a predetermined gas from an external gas supplying device into the insertion section;    a first opening part provided on the insertion section, the first opening part discharging, through the insertion section, the predetermined gas supplied through the gas supplying path; and    a communication path provided in the insertion section for communicating with outside through the grip section.    
   
   
       2 . The living body tissue harvesting apparatus according to  claim 1 , wherein a part having the smallest cross-sectional area in the gas supplying path is larger in terms of cross-sectional area than a part having the smallest cross-sectional area in the communication path.  
   
   
       3 . The living body tissue harvesting apparatus according to  claim 1 , wherein the insertion section has a mounting part for mounting an endoscope.  
   
   
       4 . The living body tissue harvesting apparatus according to  claim 2 , wherein the insertion section has a mounting part for mounting an endoscope.  
   
   
       5 . The living body tissue harvesting apparatus according to  claim 3 , wherein the mounting part is inserted into the insertion section and functions as a channel into which the endoscope is inserted.  
   
   
       6 . The living body tissue harvesting apparatus according to  claim 4 , wherein the mounting part is inserted into the insertion section and functions as a channel into which the endoscope is inserted.  
   
   
       7 . The living body tissue harvesting apparatus according to  claim 1 , wherein at least a part of the communication path is formed by a space communicating the inner space of the insertion section with the inner space of the grip section.  
   
   
       8 . The living body tissue harvesting apparatus according to  claim 2 , wherein at least a part of the communication path is formed by a space communicating the inner space of the insertion section with the inner space of the grip section.  
   
   
       9 . The living body tissue harvesting apparatus according to  claim 3 , wherein at least a part of the communication path is formed by a space communicating the inner space of the insertion section with the inner space of the grip section.  
   
   
       10 . The living body tissue harvesting apparatus according to  claim 5 , wherein at least a part of the communication path is formed by a space communicating the inner space of the insertion section with the inner space of the grip section.  
   
   
       11 . The living body tissue harvesting apparatus according to  claim 7 , wherein the communication path is a hole provided in a connecting member connecting the insertion section and the grip section, and at least a part is formed by a space formed by the hole and an outer circumference surface of the tubular member which forms the channel.  
   
   
       12 . The living body tissue harvesting apparatus according to  claim 1 , wherein the communication path communicates the outer space of the insertion section with the inner space of the grip section.  
   
   
       13 . The living body tissue harvesting apparatus according to  claim 2 , wherein the communication path communicates the outer space of the insertion section with the inner space of the grip section.  
   
   
       14 . The living body tissue harvesting apparatus according to  claim 3 , wherein the communication path communicates the outer space of the insertion section with the inner space of the grip section.  
   
   
       15 . The living body tissue harvesting apparatus according to  claim 5 , wherein the communication path communicates the outer space of the insertion section with the inner space of the grip section.  
   
   
       16 . The living body tissue harvesting apparatus according to  claim 1 , further comprising: 
 a tube inserted into and provided in the insertion section and connected to the communication path; and    a second opening that is provided in the insertion section and that communicates the body cavity with the outside as an opening of the tube.    
   
   
       17 . The living body tissue harvesting apparatus according to  claim 2 , further comprising: 
 a tube inserted into and provided in the insertion section and connected to the communication path; and    a second opening that is provided in the insertion section and that communicates the body cavity with the outside as an opening of the tube.    
   
   
       18 . The living body tissue harvesting apparatus according to  claim 3 , further comprising: 
 a tube inserted into and provided in the insertion section and connected to the communication path; and    a second opening that is provided in the insertion section and that communicates the body cavity with the outside as an opening of the tube.    
   
   
       19 . The living body tissue harvesting apparatus according to  claim 5 , further comprising: 
 a tube inserted into and provided in the insertion section and connected to the communication path; and    a second opening that is provided in the insertion section and that communicates the body cavity with the outside as an opening of the tube.    
   
   
       20 . A living body tissue harvesting apparatus comprising: 
 an insertion section to be inserted into a body cavity;    a gas supplying path for supplying a predetermined gas from an external gas supplying device into the insertion section;    an opening part provided on the insertion section, the opening part discharging, through the insertion section, the predetermined gas supplied through the gas supplying path, into the body cavity; and    a relief valve provided to the gas supplying path for maintaining pressure in the body cavity at a predetermined value.