Abstract: A catheter including a loop member adjustment mechanism for adjusting a diameter of a loop member is provided. The catheter further includes a longitudinally-extending catheter shaft including a proximal end portion and a distal end deflectable portion, wherein the distal end deflectable portion includes the loop member. The loop adjustment mechanism includes a loop member pull wire, wherein a distal end of the loop member pull wire is attached to the loop member, and a sliding member, located within the handle, wherein the sliding member is configured to translate within the handle, and wherein a proximal end of the pull wire is attached to the sliding member.

Abstract: The present disclosure provides a medical device comprising an actuator restraining assembly configured to assist in restraining a catheter shaft in a deflected configuration. The actuator restraining assembly may include a brake element, a release element, a connecting sheath, and a connecting rod disposed in a catheter handle, wherein the connecting sheath and connecting rod are attached to an actuator mechanism, and wherein the at brake element is attached to the connecting sheath and the release element is attached to the connecting rod. The brake element is sized and configured to contact an inner wall of the handle to thereby provide resistance to movement of actuator mechanism in a proximal direction with respect to the handle. In one embodiment, the actuator restraining assembly is configured to allow for temporary, i.e., reversible, restraining of the catheter shaft in the deflected configuration.

Abstract: A catheter including a loop member adjustment mechanism for adjusting a diameter of a loop member is provided. The catheter further includes a longitudinally-extending catheter shaft including a proximal end portion and a distal end deflectable portion, wherein the distal end deflectable portion includes the loop member. The loop adjustment mechanism includes a loop member pull wire, wherein a distal end of the loop member pull wire is attached to the loop member, and a sliding member, located within the handle, wherein the sliding member is configured to translate within the handle, and wherein a proximal end of the pull wire is attached to the sliding member.

Abstract: The present disclosure provides a medical device comprising an actuator restraining assembly configured to assist in restraining a catheter shaft in a deflected configuration. The actuator restraining assembly may include a brake element, a release element, a connecting sheath, and a connecting rod disposed in a catheter handle, wherein the connecting sheath and connecting rod are attached to an actuator mechanism, and wherein the at brake element is attached to the connecting sheath and the release element is attached to the connecting rod. The brake element is sized and configured to contact an inner wall of the handle to thereby provide resistance to movement of actuator mechanism in a proximal direction with respect to the handle. In one embodiment, the actuator restraining assembly is configured to allow for temporary, i.e., reversible, restraining of the catheter shaft in the deflected configuration.