| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a decompression mechanism generating desired pressure reduction and improving operability with a simple operation, and to provide a puncture device, a blood analysis device and a sensor mounting mechanism. <P>SOLUTION: A needle puncturing device 100 includes: a piston 121 having at one end thereof an end part 121a for forming part of a sensor mounting part 130 and at the other end an end part 121b for slidably supporting a rod 112 of a lancet section 111; a cylinder 122 for slidably containing therein the end section 121b of the piston 121; and packing 125 mounted to the inner periphery of the end part 121b of the piston 121 and maintaining the air-tightness of the outer periphery of the rod 112. When the piston 121 is moved in the direction toward the cylinder 122 with a skin contact part 131 in contact with the skin, the volumes of an internal space 140 and a pressure reduction chamber 150 which are sealed by packing 123, 124 are increased to produce a reduced pressure. <P>COPYRIGHT: (C)2013,JPO&INPIT |
