Stone removal device

The stone removal device addresses the challenges of invasive stone removal by using a minimally invasive device with an outer and inner tube, and a stone removal basket or grinding rod, allowing for efficient and safe stone removal without general anesthesia, suitable for all ages and stone sizes.

JP3250730UActive Publication Date: 2025-03-25SILVER BELL ENTERPRISE INC
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Patent Information

Application Number
JP2025000275U
Authority / Receiving Office
JP · JP
Patent Type
Utility models
Current Assignee / Owner
Priority Date
2024-01-31
Filing Date
2025-01-27
Publication Date
2025-03-25
Estimated Expiration
2035-01-27

AI Technical Summary

Technical Problem

Current methods for removing intrahepatic bile duct stones and common bile duct stones are invasive, require general anesthesia, and are not suitable for patients with cardiopulmonary disease, while traditional gallbladder stone treatment involves complete gallbladder removal, which can have long-term health effects on young patients.

Method used

A stone removal device comprising an outer tube, an inner tube, and a stone removal basket or grinding rod, which allows for minimally invasive stone removal via bile duct/gallbladder drainage, using local anesthesia and sedatives, and is adaptable for various stone sizes and locations.

Benefits of technology

Enables efficient and minimally invasive stone removal with reduced treatment time, avoiding the need for general anesthesia and liver resection, and is suitable for patients of all ages and stone sizes, improving patient safety and outcomes.

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Abstract

To provide a calculus removal device which does not require general anesthesia, does not require hospitalization, can reserve the gallbladder, does not require liver resection, and has no age or size restrictions. [Solution] The stone removal device includes an outer tube 11, an inner tube 12 that can be fitted inside the outer tube, and a stone removal basket 13 or a stone crushing rod 14 that can be fitted inside the inner tube. The stone removal device can be inserted into the bile duct or gallbladder through the expanded drainage channel, the stone removal basket is placed at the stone site through the inner tube and the outer tube, the stone is placed in the basket net 132 and the catheter is fixed, the basket containing the stone is pulled outward, and the stone can be crushed. If the stone cannot be crushed, the stone can be crushed using the stone crushing rod, and the stone fragments can be taken out of the body using the basket net.
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