US 11,806,481 B2
Catheter assembly
Masahiro Ishida, Hadano (JP)
Assigned to TERUMO KABUSHIKI KAISHA, Tokyo (JP)
Filed by TERUMO KABUSHIKI KAISHA, Tokyo (JP)
Filed on Jul. 29, 2019, as Appl. No. 16/525,238.
Application 16/525,238 is a continuation of application No. PCT/JP2018/011758, filed on Mar. 23, 2018.
Claims priority of application No. 2017-057566 (JP), filed on Mar. 23, 2017; and application No. 2017-205325 (JP), filed on Oct. 24, 2017.
Prior Publication US 2019/0351183 A1, Nov. 21, 2019
Int. Cl. A61M 25/00 (2006.01); A61M 25/06 (2006.01); A61M 1/36 (2006.01)
CPC A61M 25/0026 (2013.01) [A61M 25/0612 (2013.01); A61M 25/0693 (2013.01); A61M 1/3653 (2013.01); A61M 2025/0681 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A catheter assembly comprising:
a catheter comprising a main lumen and one or more sub lumens provided separately from the main lumen; and
an inner needle extending through the main lumen; and
a deflection suppression mechanism configured to suppress deflection of the inner needle by supporting the inner needle via the catheter;
wherein the one or more sub lumens respectively communicate with one or more sub openings formed in the catheter;
wherein the catheter is configured to advance with respect to the inner needle;
wherein the deflection suppression mechanism comprises a sliding contact support portion that is in sliding contact with the catheter when the catheter advances with respect to the inner needle; and
wherein the sliding contact support portion is configured to contact the catheter at (i) a location proximal of a distal-most one of the one or more sub openings, and/or (ii) a location proximal of a step portion generated in the catheter as the one or more sub lumens are formed.