A front derailleur actuation device having a cable-winding bush in a casing rotatable about axis (X) in a first angular direction (A) between a first angular position and a last two angular positions to actuate a member mounted rotatable about axis (X) and a stationary member mounted in the casing. Either the rotating member or the stationary member is provided with at least one pointer slidably engaged on a fastening track equipped with a plurality of stop areas provided on the other member. The stationary member or the rotating member provided with the fastening track further comprises at least one further stop area not arranged along the fastening track, said further stop area being engageable by the pointer and being arranged between two successive stop areas of said fastening track, the cable-winding bush passing between two angular positions following the passage of the pointer between two stop areas.

Push-cables and associated apparatus for pipe inspection systems are disclosed. In one embodiment a pipe inspection system includes a camera head, a push-cable including an outer covering enclosing a plurality of electrical conductors for transmitting signals and/or power between the camera head and an electronic device operatively coupled to the push-cable, and a spring assembly disposed about the push-cable near the distal end where the spring assembly comprises a spring with a tapered flex section having a varying cross-sectional area and/or a varying cross-sectional shape.

Push-cables and associated apparatus and systems are disclosed. In one embodiment, a push-cable assembly for use with a pipe inspection system may include a push-cable element having a proximal end and a distal end, with a spring assembly having varying flexibility coupled to or near the distal end. The spring assembly may include an outer coiled spring having a proximal and a distal end, and an inner coiled spring nested at least partially within the outer coiled spring. A camera head and/or other elements such as a cutting or jetting apparatus may be coupled at or near the distal end.

Push-cables and associated apparatus for pipe inspection systems are disclosed. In one embodiment a pipe inspection system includes a camera head, a push-cable including an outer covering enclosing a plurality of electrical conductors for transmitting signals and/or power between the camera head and an electronic device operatively coupled to the push-cable, and a spring assembly disposed about the push-cable near the distal end where the spring assembly comprises a spring with a tapered flex section having a varying cross-sectional area and/or a varying cross-sectional shape.

Push-cables and associated apparatus for pipe inspection systems are disclosed. In one embodiment a pipe inspection system includes a camera head, a push-cable including an outer covering enclosing a plurality of electrical conductors for transmitting signals and/or power between the camera head and an electronic device operatively coupled to the push-cable, and a spring assembly disposed about the push-cable near the distal end where the spring assembly comprises a spring with a tapered flex section having a varying cross-sectional area and/or a varying cross-sectional shape.

The invention provides an articulating mechanism useful, for example, for remote manipulation of various surgical instruments and diagnostic tools within, or to, regions of the body. Movement of segments at the proximal end of the mechanism results in a corresponding, relative movement of segments at the distal end of the mechanism. The proximal and distal segments are connected by a set of cables in such a fashion that each proximal segment forms a discrete pair with a distal segment. This configuration allows each segment pair to move independently of one another and also permits the articulating mechanism to undergo complex movements and adopt complex configurations. The articulating mechanisms may also be combined in such a way to remotely mimic finger movements for manipulation of an object or body tissue.

A surgical instrument comprises a spacer element comprising a proximal region and a distal region, an end effector coupled to a distal end of the spacer element, a user hand interface at a proximal end of the spacer element, and a securing element for securing the proximal end of the spacer element to a user wrist. The user hand interface comprises an elongate member including a lumen and extending from a distal end to a proximal end of the user hand interface. The user hand interface further comprises an actuation cable extending within the lumen from the distal end to the proximal end of the user hand interface. The proximal region of the spacer element comprises a curved portion extending from the user hand interface. The user hand interface is movable in a manipulation space proximal of the distal region and distal of the proximal end of the spacer element.

Push-cables and associated apparatus and systems are disclosed. In one embodiment, a push-cable assembly for use with a pipe inspection system may include a push-cable element having a proximal end and a distal end, with a spring assembly having varying flexibility coupled to or near the distal end. The spring assembly may include an outer coiled spring having a proximal and a distal end, and an inner coiled spring nested at least partially within the outer coiled spring. A camera head and/or other elements such as a cutting or jetting apparatus may be coupled at or near the distal end.

The described actuation device comprises a casing, intended for the attachment to the handlebar of the bicycle, a cable-winding bobbin, angularly mobile in the casing about a main axis of the device, a first driving mechanism, acting on the bobbin to rotate it in a first angular direction, a second driving mechanism, acting on the bobbin to rotate it in a second angular direction opposite the first, as well as indexer assembly for removably holding the bobbin in predetermined angular positions. In accordance with the invention, the indexer assembly comprise first countering member, to counter the rotation of the bobbin in the first direction, and second countering member, distinct from the first countering member, to counter the rotation of the bobbin in the second direction. Asymmetric operation is thus obtained which allows active actuation to be set both for upward gearshifting and for downward gearshifting.

A front derailleur actuation device having a cable-winding bush in a casing rotatable about axis (X) in a first angular direction (A) between a first angular position and a last two angular positions to actuate a member mounted rotatable about axis (X) and a stationary member mounted in the casing. Either the rotating member or the stationary member is provided with at least one pointer slidably engaged on a fastening track equipped with a plurality of stop areas provided on the other member. The stationary member or the rotating member provided with the fastening track further comprises at least one further stop area not arranged along the fastening track, said further stop area being engageable by the pointer and being arranged between two successive stop areas of said fastening track, the cable-winding bush passing between two angular positions following the passage of the pointer between two stop areas.