Bone Staple Delivery Lever Mechanism for Compression Retention

The planar distal end face of the lever-handle and the planar proximal end face of the lever-head are configured to come into parallel alignment facing one another when the lever-handle is rotated to the clamped position. This parallel alignment creates a mechanical configuration that prevents the lever-handle from rotating back in the opposite direction, thereby preliminarily counteracting any tendency for the clamped position to be lost and maintaining compression force without continuous operator input

The device structure itself provides the retention function through the parallel alignment of the planar end faces. Once the operator rotates the lever-handle to clamp the staple, the mechanical configuration automatically maintains this position without requiring the operator to continue applying force. The device serves itself by using its own structure to prevent reverse rotation and maintain the clamped state

The distal end face of the lever-handle is designed with asymmetric geometry, comprising both an arcuate distal end face and a planar distal end face. The arcuate portion allows the lever-handle to rotate freely in the closure direction to move the lever-head distally and close the staple clamp. The planar portion, when aligned parallel to the planar proximal end face of the lever-head, creates a mechanical stop that prevents rotation in the opposite direction, thereby retaining the clamped position

The arcuate distal end face of the lever-handle provides a curved surface that facilitates smooth rotational motion during the clamping action, allowing the lever-head to move distally along a curved path. This curvature enables ease of operation during the closing motion while the transition to the planar distal end face provides the directional constraint to prevent reverse rotation