Catheters for delivering medical treatments to remote areas within the body.

The catheter's randomized skeletal wall design addresses flexibility and torqueability issues, enhancing navigation and precision by mimicking natural blood vessels, thus preventing unwanted rotations and ensuring accurate targeting of anatomical structures.

JP2026516426APending Publication Date: 2026-05-25IMDS R&D
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Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
IMDS R&D
Filing Date
2024-04-19
Publication Date
2026-05-25

AI Technical Summary

Technical Problem

Existing catheters face challenges in navigating tortuous vascular pathways due to insufficient flexibility, torqueability, and structural integrity, often resulting in the whipping phenomenon during torque application, which disrupts the catheter's orientation and prevents precise targeting of anatomical structures.

Method used

A catheter design featuring a randomized skeletal wall structure with randomized skeletal wall segments, comprising a discontinuous tubular reinforcement made of microfabricated notches, which enhances flexibility and torqueability by mimicking natural blood vessel structures, reducing the likelihood of whipping and improving interaction with vascular structures.

Benefits of technology

The randomized skeletal wall structure provides improved flexibility, torqueability, and structural integrity, allowing for precise navigation through complex vascular pathways while preventing unwanted rotations and ensuring accurate targeting of anatomical structures.

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Abstract

The tubular catheter wall of the catheter (1) comprises a randomized skeleton (7) having a micro-machined notch pattern (7A) with a cut ratio of 40% to 90% of the entire skeleton. The randomized skeleton (7), positioned between the inner liner and the outer laminate, comprises a plurality of interconnected struts (21L to 28L, 31L to 38L, 21R to 28R, 31R to 38R). Each strut has a corresponding pair of two mutually opposing longitudinal strut edges (41, 42). Each strut edge (41, 42) has random bends and / or random cusps, thereby making each strut unique. The randomly formed skeleton strut edges not only provide improved interconnection between the skeleton, inner liner, and outer laminate, but also provide improved torqueability of the catheter, including a preventive effect against the occurrence of whipping during torque application.
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