Patent ID: 8029525
Filing Date: 2011-10-04
Classification: A61B

Abstract:
1. A puncture instrument comprising a plurality of puncture needles for puncturing the surface of a biologic body and for performing seriatim puncturing with each of the puncture needles, said puncture instrument comprising: a puncture needle cartridge for housing a plurality of puncture needles connected in series in an axis direction of the puncture instrument, each puncture needle comprising a body member and a needle member, wherein a base end of the needle member is secured in and substantially coaxial with the body member, and a needle point end protrudes forwardly; and the body member comprising a forward end and a rear end, wherein the forward end extends in the axial direction of the needle member to surround the needle point end, such that when connected to a second puncture needle, the forward end covers the outer surface of the rear end of the second puncture needle, and wherein the forward end and the rear end have substantially complementary shapes such that the needle members are hygienically maintained and deployed, and wherein a circumferential convex portion of the body member is on the radially inner side of the point end of the body member that extends in the axial direction of the forward end, a circumferential concave portion of the body member is on the part of the rear end complementary to the convex portion, and they fit into each other when axially adjacent puncture needles are connected, such that the puncture needles are connected in such a manner that removal of a puncture needle pulls the next puncture needle to the puncture position, the puncture needle cartridge comprising a plurality of puncture needle stopping members whose front ends are folded towards the inner wall of the puncture needle cartridge, wherein the stopping members engage a dent in a surface of each puncture needle body member and are located in the puncture needle cartridge at intervals of about the length of the body member of the puncture needle.