Title:
DISTAL STABILIZER
Document Type and Number:
WIPO Patent Application WO/2024/080366
Kind Code:
A1
Abstract:
Provided is a distal stabilizer that provides the blood-vessel-wall friction force necessary to deliver a large-diameter catheter serving as an anchor device, and that also has excellent slidability when reduced in diameter and inserted into a small-diameter catheter. A distal stabilizer 1 is used to deliver a catheter in a biological lumen, and comprises: a linear delivery member 3; and a cylindrical part 2 that extends from the distal end of the linear delivery member 3 and is locked to an inner wall of the biological lumen. The cylindrical part 2 has a structure in which cells 20 in shapes surrounded by wire-like members are arrayed in a longitudinal direction, and is configured such that: the surface area of the cylindrical part 2 in an expanded-diameter state is 5–20% of the surface area of a virtual cylinder with identical dimensions in the longitudinal direction and in a radial direction; the expansive force per unit length in a contracted-diameter state with an external diameter of 1.5 mm is 0.015–0.06 N/mm; and the expansive force per unit length in a contracted-diameter state with an external diameter of 0.42 mm is 0.1–0.3 N/mm.
Inventors:
INUZUKA NAOKI (JP)
Application Number:
PCT/JP2023/037234
Publication Date:
April 18, 2024
Filing Date:
October 13, 2023
Export Citation:
Assignee:
BOLT MEDICAL INC (JP)
International Classes:
A61M25/01; A61F2/844; A61F2/86; A61M25/04
Domestic Patent References:
| WO2022004850A1 | 2022-01-06 |
Foreign References:
| JP2014513987A | 2014-06-19 | |||
| JP2021159275A | 2021-10-11 |
Attorney, Agent or Firm:
SEKIGUCHI Masao (JP)
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