Balloon catheter
The balloon catheter's innovative drug layer with radially extending columnar crystals and a gap design addresses the challenge of drug release and administration, enhancing treatment efficacy by facilitating easy detachment and target tissue contact.
WO2026140804A1PCT designated stage Publication Date: 2026-07-02KANEKA CORP
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- KANEKA CORP
- Filing Date
- 2025-12-08
- Publication Date
- 2026-07-02
AI Technical Summary
Technical Problem
Conventional balloon catheters face challenges in effectively releasing drugs from the balloon surface and administering them to the target tissue, particularly in preventing restenosis after angioplasty.
Method used
A balloon catheter design featuring a drug layer with columnar crystals that have a longitudinal axis extending radially, allowing for easy detachment from the balloon surface and enhanced contact with the target tissue, along with a gap between the balloon body and drug layer to facilitate drug release.
Benefits of technology
The design enables efficient drug release and transfer to the target tissue, improving the effectiveness of drug administration and reducing restenosis.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure JP2025042648_02072026_PF_FP_ABST
Abstract
Provided is a balloon catheter with which a medicine is easily released from a balloon surface and with which it is possible to effectively administer the medicine to a target tissue. A balloon catheter having a balloon (20), wherein: the balloon (20) has a balloon body part (30) and a medicine layer (40) that is disposed on the radially outer side of the balloon body part (30) in the radial direction y and contains a medicine; the medicine layer (40) contains a plurality of columnar crystals (41) of the medicine; the longitudinal axis of each of the plurality of columnar crystals (41) has a vertical component extending in the radial direction y and a parallel component extending parallel to a plane perpendicular to the radial direction y; the plurality of columnar crystals (41) include columnar crystals (41P) in which the vertical component of the extension direction of the longitudinal axis is greater than the parallel component; and the balloon (20) has contact regions (40a) in which the outer surface of the balloon body part (30) and the medicine layer (40) are in contact with each other, and gaps (50) in which the outer surface of the balloon body part (30) and the medicine layer (40) are set away from each other.
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