US 12,246,147 B2
Indwelling needle assembly
Shingo Sakamoto, Osaka (JP)
Assigned to NIPRO CORPORATION, Osaka (JP)
Appl. No. 17/602,455
Filed by NIPRO CORPORATION, Osaka (JP)
PCT Filed Apr. 10, 2020, PCT No. PCT/JP2020/016151
§ 371(c)(1), (2) Date Oct. 8, 2021,
PCT Pub. No. WO2020/209368, PCT Pub. Date Oct. 15, 2020.
Claims priority of application No. 2019-075905 (JP), filed on Apr. 11, 2019.
Prior Publication US 2022/0211979 A1, Jul. 7, 2022
Int. Cl. A61M 25/06 (2006.01)
CPC A61M 25/0606 (2013.01) [A61M 25/0631 (2013.01); A61M 25/0693 (2013.01)] 5 Claims
OG exemplary drawing
 
1. An indwelling needle assembly comprising:
an inner needle unit including an inner needle hub;
an outer needle unit including an outer needle hub, the inner needle unit and the outer needle unit being detachably connected to each other;
an inner needle to which a protector is attached, the inner needle being retractably inserted through an outer needle, while the protector being configured to deform or displace to protect a needle tip of the inner needle by being moved to the needle tip due to retraction of the inner needle;
a storage housing storing the protector, the storage housing being provided to the inner needle unit; and
a connecting member connecting the storage housing to the outer needle hub, wherein
the protector prevents the connecting member from moving such that the storage housing and the outer needle hub are held in a connected state, and
the connecting member is configured to be permitted to move by the protector deforming or displacing due to the retraction of the inner needle such that the connected state of the storage housing and the outer needle hub is allowed to be released, wherein
the connecting member includes a locking part locked to a proximal end opening part of the outer needle hub,
a distal end portion of the storage housing is inserted from the proximal end opening part of the outer needle hub, and
a peripheral wall of the outer needle hub is sandwiched by the locking part of the connecting member and the distal end portion of the storage housing from an inside and an outside.