Abstract: An exercise device has a base, an upstanding member extending from the base, and a handgrip affixed to an upper portion of the upstanding member. The base is preferably U-shaped and has two longitudinal members that extend rearward from a forward portion of the base. The base has stiffening ribs and cutouts for allowing the base to fit between the legs of a typical chair. The handgrip has two gripping portions extending laterally and on opposite sides of the upstanding member, which is selectively detachable from the base. A user places the outer ends of the longitudinal members under the front portion of a chair and sits in the chair. The user then places his feet on the longitudinal members and grips the gripping portions of the handgrip. The user pushes downward with his feet and pulls toward his body with his hands to move the body to a standing position.

Abstract: A coupling device is used for attaching a dissecting tool to a rotary shaft of a surgical instrument. The device is comprised of a spindle attachment which secures to a spindle of the rotary shaft. The spindle attachment has a shaft engagement portion for engaging the shaft of the dissecting tool. The shaft engagement portion is provided with apertures which terminate within a central bore of the engagement portion through which the tool shaft extends. Surrounding the spindle attachment is a sleeve which has a contact surface which contacts spherical locking members located within the apertures of the shaft engagement portion. A sleeve engagement member is coupled to the base and has an external surface configured to allow a user to grasp the sleeve so that it can be moved between retracted and extended positions. As the sleeve engagement member is moved between the retracted and extended positions, it causes the sleeve to be move to an engaged or disengaged position.

Abstract: An object is attached to a bone by using blind rivets. The blind rivets can be set from the outside of the bone. Each blind rivet has a body, with a head on one end, and a mandrel extending from the head end of the body. A hole is formed in the bone. The rivet is inserted through the object and into the bone through a hole in the bone cortex. The rivet is set by pulling on the mandrel with the rivet gun. The rivet secures the object to the proximal cortex layer of the bone. The method is used to attach objects such as plates and hip sockets to bone. In addition, the rivet can be provided with serrations on the head, wherein the rivet attaches soft tissue, such as muscle tendons, to bone.