← USPTO Patent Grants

Multilumen catheter

Grant US12576200B2 Kind: B2 Mar 17, 2026

Assignee

NIPRO CORPORATION

Inventors

Yusuke Matsuda, Shota Nakai, Takuma Nakamura

Abstract

A multi-lumen catheter includes a body 101 that is formed into a cylindrical shape and extends from a proximal end to a distal end and surrounded by an outer wall 113; an inner space of the body 101 being divided with a partition 114 extending in a longitudinal direction, into a plurality of lumens including a first lumen 111 and a second lumen 112. The second lumen 112 has a second opening plane 122 at its distal end, and the first lumen 111 has a first opening plane 121 at its distal end, the second opening plane 122 being positioned more distally than the first opening plane 121. The outer wall 113 includes a first outer wall portion 115 defining the first lumen 111 and a second outer wall portion 116 defining the second lumen 112, the first outer wall portion 115 having a first lumen slit 123 notching a portion of a distal end of the first outer wall portion 115. The body 101 includes a flexible portion 141 having a lower hardness, the flexible portion 141 including a distal end portion of the first outer wall portion 115 wherein the first lumen slit 123 is provided.

CPC Classifications

A61M 2025/0031 A61M 2025/0037 A61M 25/0068 A61M 1/3661 A61M 25/003 A61M 25/007 A61M 1/3659 A61M 25/0026 A61M 1/3653 A61M 2025/0073 A61M 25/0074 A61M 25/0067 A61M 2025/0188 A61M 25/001 A61M 25/008 A61M 2202/0413 A61M 25/0054

Filing Date

2021-11-24

Application No.

18254434

Claims

20