A magnet-assisted suture gripper comprising a suture retrieval needle, a retrieval device body, a gripping wire, a gripping arm, and a gripping magnet.

JP7863581B2Active Publication Date: 2026-05-21APPLIED MEDICAL TECHNOLOGY INC
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Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
APPLIED MEDICAL TECHNOLOGY INC
Filing Date
2022-05-17
Publication Date
2026-05-21

AI Technical Summary

Technical Problem

Existing suture threading devices face challenges in capturing and retrieving sutures under indirect, non-stereoscopic visualization due to the lack of three-dimensional imaging, leading to difficulties in precise positioning and increased procedure time, especially in procedures where traditional magnetic U-stitch devices cannot be used.

Method used

A magnet-assisted suture gripper with a suture retrieval needle, retrieval body, gripping wire, and gripping arm, utilizing two dipole magnets for self-alignment and a mechanical arm with an enlarged endpoint to secure the suture, overcoming the limitations of magnetic force in small spaces.

Benefits of technology

The device enables reliable and efficient suture retrieval by aligning magnets predictably and providing mechanical retention, reducing the need for precise positioning and minimizing procedural complexity.

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Abstract

A magnet assisted suture grasper for grasping a magnetic suture is provided. The magnet assisted suture grasper includes a suture retrieval needle, a retriever body, a grasper wire, a grasper arm, and a grasper magnet. Translation of the retriever body within the needle lumen of the suture retrieval needle in a first direction moves the grasper arm from a first position to a second position, thereby exposing the grasper magnet from the needle lumen and allowing contact between the grasper magnet and a magnetic suture attracted thereto. Translation of the retriever body within the needle lumen in a second direction opposite the first direction moves the grasper arm from the second position to the first position, thereby isolating the grasper magnet and grasping the magnetic suture within the needle lumen.
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