US 12,144,625 B2
Puncture needle, puncture device, and blood sampling device
Seiji Aoyagi, Osaka (JP); and Hajime Matsumoto, Aichi (JP)
Assigned to The School Corporation Kansai University, Osaka (JP); and Aiki Riotech Corporation, Aichi (JP)
Appl. No. 17/283,826
Filed by THE SCHOOL CORPORATION KANSAI UNIVERSITY, Osaka (JP); and AIKI RIOTECH CORPORATION, Aichi (JP)
PCT Filed Oct. 9, 2019, PCT No. PCT/JP2019/039741
§ 371(c)(1), (2) Date Apr. 8, 2021,
PCT Pub. No. WO2020/075735, PCT Pub. Date Apr. 16, 2020.
Claims priority of application No. 2018-193782 (JP), filed on Oct. 12, 2018.
Prior Publication US 2021/0315495 A1, Oct. 14, 2021
Int. Cl. A61B 5/00 (2006.01); A61B 5/151 (2006.01)
CPC A61B 5/151 (2013.01) 9 Claims
OG exemplary drawing
 
1. A puncture apparatus comprising:
a puncture needle; and
a driving section;
wherein the puncture needle includes:
a needle body that includes a main portion and a distal portion tapering from the main portion and that is rotatable about a central axis of the needle body,
the needle body including needle parts which are separated by a boundary along the central axis,
each of the needle parts being independently translatable along the central axis; and
wherein the driving section includes:
a rotation mechanism configured to cause the needle body to rotate; and
a translation mechanism configured to translate each of the needle parts independently along the central axis, the translation mechanism being configured to cause at least one of the needle parts to advance such that the at least one of the needle parts projects forward relative to the other one or more of the needle parts; and
wherein the driving section is configured to cause the needle body to carry out the following two types of motion modes:
(a) first motion mode in which the needle body is caused to rotate and at least one of the needle parts is caused to advance such that the at least one of the needle parts projects forward relative to the other one or more of the needle parts; and
(ii) second motion mode in which the needle body is caused to rotate or at least one of the needle parts is caused to advance such that the at least one of the needle parts projects forward relative to the other one or more of the needle parts.