Rotatable snares and related methods

A medical device, comprising:

• a handle;
• a sheath fixed relative to the handle;
• a longitudinal actuator movable relative to the handle;
• an end effector;
• a member extending proximally from the end effector through the sheath, a portion of the member being fixed relative to the longitudinal actuator;
• a second sheath disposed within the sheath and positioned over the member, wherein the second sheath is movable relative to the member, and configured to inhibit radial movement of the member within the sheath;
• and
• a rotation actuator;
• wherein rotation of the rotation actuator causes rotation of the member relative to the sheath and the second sheath;
• and
• wherein longitudinal movement of the longitudinal actuator causes longitudinal movement of the member relative to the rotation actuator.

A medical device, comprising:

• a handle;
• a sheath extending distally from, and fixed relative to, the handle;
• a longitudinal actuator movable relative to the handle;
• an end effector;
• a member extending proximally from the end effector through the sheath, a portion of the member being fixed relative to the longitudinal actuator;
• a rotation actuator;
• and
• a stopper fixed to the member and movable along the handle, wherein the stopper is positioned proximal to the sheath and the rotation actuator, and a longitudinal length of the stopper defines a limit of distal movement of the longitudinal actuator relative to the handle;
• wherein rotation of the rotation actuator causes rotation of the member relative to the sheath;
• and
• wherein longitudinal movement of the longitudinal actuator causes longitudinal movement of the member relative to the rotation actuator.