Ureteral Access Sheath with Force Meter and Disengagement

The patent replaces the manual mechanical force estimation system with an electronic force sensing system. Force sensors embedded in the insertion device electronically measure the force applied during sheath insertion, replacing the traditional tactile/manual estimation method. This electronic substitution enables precise force monitoring and automatic safety mechanisms while maintaining procedural simplicity.

The patent implements real-time feedback through force sensors that continuously monitor the force applied during sheath insertion. When the measured force approaches or exceeds the safety threshold (8 Newtons), the system provides immediate feedback through visual or audible alerts, and can automatically trigger disengagement mechanisms. This closed-loop feedback system ensures force remains within safe limits throughout the insertion process.

The patent merges the force sensing, measurement, and safety disengagement functions into a single integrated device assembly. The force sensors, processing unit, alert mechanisms, and disengagement components are combined with the ureteral access sheath in one unified structure, eliminating the need for separate manual monitoring devices and reducing overall system complexity despite adding sophisticated functionality.

The patent implements self-service through automatic safety mechanisms that operate without continuous external intervention. The force sensors automatically detect excessive force, the processing unit independently evaluates the measurements against safety thresholds, and the disengagement mechanism automatically activates when needed. This self-monitoring and self-protecting system reduces the need for complex external control systems and manual operation complexity.