The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 28, 2026
Filed:
Jun. 24, 2025
National Taiwan University, Taipei City, TW;
NATIONAL TAIWAN UNIVERSITY, Taipei City, TW;
Abstract
An annular surgical retractor has a base panel, a driving panel, and multiple expanding elements. Each of the expanding elements has a transmission panel and a supporting rod formed on an inner end of the transmission panel and is bent relative to the transmission panel. By driving the driving panel to rotate relative to the base panel, each of the expanding elements is driven to move between a retracting position and an expanding position. When in the retracting position, the supporting rods abut on each other to form a column. When moved to the expanding position, distances between the supporting rods are enlarged and an area surrounded by the supporting rods is expanded. The annular surgical retractor is used to open a small incision. A depth of the supporting rods inserted into the incision and the area surrounded by the supporting rods can be adjusted according to surgical needs.