Enhanced Circular Fixator System for Total Ankle Replacement

The present inventive concept relates to an enhanced circular fixator system for total ankle replacement, providing improved stability, flexibility, and adjustability during surgical procedures.

The original circular fixator system patent (title: 'Circular fixator system and method') has limitations in terms of adjustability and flexibility, which can lead to inaccurate resections and compromise the overall success of the total ankle replacement procedure. The present inventive concept addresses these limitations by introducing a novel cartridge holder with movable tabs and superior-inferior adjustment mechanisms, enabling more precise and efficient surgical operations.

The enhanced circular fixator system comprises a foot holder with a rotation base plate featuring a retaining body defining a groove, where at least one locking pin is positionable to prevent translation while permitting rotation about a vertical axis. The system also includes a resection guide or sizing guide attached to the foot holder via a cartridge holder, which has a plurality of movable tabs that extend into respective slots in the resection guide or sizing guide. Additionally, the cartridge holder features a superior-inferior adjustment mechanism to adjust the position of the resection guide or sizing guide relative to the talus. This design enables surgeons to simulate weight bearing on the ankle joint, rotate the foot in a transverse plane relative to the tibia to establish a mortise view for evaluation, and adjust the resection guide or sizing guide to accommodate different sizes and anatomical variations.

The novel aspects of the present inventive concept lie in the introduction of the cartridge holder with movable tabs and superior-inferior adjustment mechanisms, which provide enhanced adjustability, flexibility, and precision during total ankle replacement procedures. These features are non-obvious and represent a significant improvement over the original circular fixator system patent.

Alternative embodiments of the enhanced circular fixator system may include different cartridge holder designs, such as those with adjustable knobs or alternative tab configurations. Additionally, the system could be adapted for use in other orthopedic procedures, such as knee or hip replacements, or integrated with other surgical instruments and tools.

The enhanced circular fixator system has significant commercial potential in the orthopedic industry, particularly in the growing market for total ankle replacement procedures. The system's improved adjustability, flexibility, and precision are expected to increase adoption rates and drive revenue growth for manufacturers and healthcare providers.