A connector assembly includes a shank having an inner abutment proximate to an inner extremity, and an outer abutment proximate to an outer extremity. A connector includes an inner loop that encircles the shank between the inner abutment and the outer abutment and that is movable reciprocally along the shank, a first portion that extends outwardly from the inner loop to a second portion that extends from the first portion past the outer extremity and the abutment to a third portion that extends inwardly and forwardly from the second portion to a pivotally mountable outer loop. Tensioned compression springs encircle the shank between the inner abutment and the inner loop, and act between the inner abutment and the inner loop urging the inner loop toward the outer abutment.

A connection mechanism and manufacturing method for a surgical instrument includes an inner shaft member that extends at least partially through an elongated shaft member of the instrument and defines proximal and distal ends and is selectively movable in a longitudinal direction with respect to the elongated shaft member and includes at least one aperture that extends partially along the longitudinal direction and disposed distally from the proximal end. The inner shaft member enables a drive collar member to slide on the inner shaft member and reciprocate along the longitudinal direction. A drive collar stop member slides on the inner shaft member and moves along the longitudinal direction. The drive collar stop member then moves in a direction relative to the longitudinal axis to engage the aperture and limit further longitudinal motion of the drive collar member. An inner shaft stop member limits movement of the inner shaft.

A connector assembly includes a shank having an inner abutment proximate to an inner extremity, and an outer abutment proximate to an outer extremity. A connector includes an inner loop that encircles the shank between the inner abutment and the outer abutment and that is movable reciprocally along the shank, a first portion that extends outwardly from the inner loop to a second portion that extends from the first portion past the outer extremity and the abutment to a third portion that extends inwardly and forwardly from the second portion to a pivotally mountable outer loop. Tensioned compression springs encircle the shank between the inner abutment and the inner loop, and act between the inner abutment and the inner loop urging the inner loop toward the outer abutment.

A method of assembling a surgical instrument includes inserting a knife into a knife guide and positioning the knife and the knife guide within an inner shaft. The method also includes moving a drive collar stop along a longitudinal axis defined through the inner shaft, engaging a pair of opposing projections of the drive collar stop within a corresponding first pair of opposing apertures defined in the inner shaft, and moving a drive collar along the inner shaft. The method also includes moving a spring along the inner shaft, compressing the spring, moving an inner shaft stop transverse to the longitudinal axis defined through the inner shaft, and engaging a pair of opposing projections of the inner shaft stop within a corresponding second pair of opposing apertures defined in the inner shaft proximal to the first pair of opposing apertures.

According to aspects of the present disclosure, a seat of an exercise bench may be repositioned (e.g., raised and rotated) to function as an elbow or arm rest for various weightlifting exercises (referred to as the deployed position). The repositioning of the seat (or arm rest) is achieved with a pivot stopping mechanism that securely limit the desired reposition angle and location during adjustment.