MICROFABRICATED CATHETER DEVICES WITH HIGH AXIAL STRENGTH

MX438622BActive Publication Date: 2026-10-05SCIENTIA VASCULAR INC
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Patent Information

Application Number
MX2026005617
Authority / Receiving Office
MX · MX
Patent Type
Patents
Current Assignee / Owner
Priority Date
2021-10-04
Filing Date
2023-04-04
Publication Date
2026-10-05
Estimated Expiration
2041-10-05

AI Technical Summary

Technical Problem

Catheters often face challenges in navigating tortuous vascular pathways due to a lack of sufficient axial stiffness, which can lead to accordion-like compression and reduced pushability, while increasing axial stiffness can compromise bending flexibility and torquability.

Method used

Microfabricated catheter devices with a series of circumferentially extending rings connected by axially extending beams, featuring transverse and axial cuts that provide wedge-shaped configurations, allowing for increased axial stiffness while maintaining bending flexibility and optimal pushability.

Benefits of technology

The described microfabricated catheter design achieves high axial strength with improved pushability and bending flexibility, achieving a favorable axial stiffness to bending stiffness ratio, enhancing navigation through complex vascular pathways without excessive stress concentration.

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Abstract

The present invention relates to microfabricated intravascular devices configured for high axial strength while maintaining effective flexural flexibility. A tube element includes a series of circumferentially extending rings connected to each other by a series of axially extending beams. Transverse cuts separate and define the rings. A series of axial cuts align with the beams and extend partially from the beams into adjacent rings, such that the beam length is partially nested within the axial length of adjacent rings. This increases the functional length of the beams to provide flexural flexibility while the ring structure remains sufficient to provide effective axial stiffness.
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