A non-explosive tension release actuation device includes an initiator system and a housing base attached to the initiator system. The device also includes a carriage assembly positioned at least partially within the housing base. The carriage assembly includes a carriage unit, a first jaw, a second jaw, a first rocker arm, and a second rocker arm. The first rocker arm and the second rocker arm are attached to the carriage unit and to the initiator system. The device further includes a load attachment unit positioned at least partially within the carriage unit and between the first jaw and the second jaw. The first jaw and the second jaw are configured to swing away from the load attachment unit in response to a downward motion of the carriage unit relative to the housing base.

A handheld surgical device includes a gripping mechanism for gripping pins or wires with a range of different sizes. The gripping mechanism includes a plurality of gripping blocks, the plurality of gripping blocks interacting to form a variable size channel. A sliding compression control element applies a compressive force to each gripping block and thereby grip a wire or pin within a range of sizes in the center of a pin/wire receiving channel.

A multi-piece umbrella pole that includes first and second pole sections that are assembled into an elongate umbrella pole. The pole sections include an alignment notch and cross pin for facilitating assembly of the two pole sections. An outer sleeve includes a button assembly that can actuate a detent pin for coupling or decoupling the pole sections. The outer sleeve can also include an actuator for a tilt mechanism that angles a canopy portion of the umbrella assembly.

Bearing assemblies for selectively coupling to surgical instruments are disclosed. In one embodiment, a bearing assembly can include a housing with a cavity, a first race in the cavity that translates but does not rotate relative to the housing, bearing elements disposed in the first race that move radially in and out of a central passage of the first race, and a second race that is fixed in the cavity. The first race can be biased toward an opening of the cavity, the second race can surround the first race with an inner surface having a tapered diameter configured to contact the bearing elements as the first race moves distally relative to the second race and urge the plurality of bearing elements radially inward to selectively lock the bearing assembly to a surgical instrument disposed within the central passage of the first race.