| 摘要 |
PROBLEM TO BE SOLVED: To ease adjusting force penetrating a connecting pipe through a valve body and confirming whether or not the flow path has been secured in the structure of simply pushing the connecting pipe through the rear end mouth of the retaining needle body. SOLUTION: The retaining needle is composed of a retaining needle body 3 with desired length and a connecting pipe 4 with a screw adapter. The retaining body 3 is equipped with a valve body housing case 5 and catheter 7 made to communicate with the tip side of the valve body housing case 5 through a cap 6. The connecting pipe 4 is equipped with a screw adapter 8 screwed to the value body housing case 5 and a valve connection pipe 9 that operates valve bodies 5a and 5b. The valve connection pipe 9 has internally been installed concentrically in the screw adapter 8 so that its tip protrudes toward value body 5a, 5b, lets the valve open so as to communicate straight with the catheter 7 through elastic holes of the valve bodies 5a and 5b with advancing rotary operation of the screw adapter 8, and lets the valve close so as to shut the inner hollow 1a of the retaining needle and leave from the valve bodies 5a and 5b with backing rotary operation of the screw adapter 8. |
