Abstract: Various exemplary methods and devices for actuating surgical instruments are provided. In general, a surgical device can include one or more actuation shafts configured to facilitate actuation of the device. In an exemplary embodiment, the device can include four actuation shafts, two actuation shafts to facilitate articulation of the device, one actuation shaft to facilitate opening and closing of jaws at a distal end of the device, and one actuation shaft to facilitate moving a cutting element of the device. In an exemplary embodiment, each of the one or more actuation shafts can include a distal elongate member and a proximal elongate member having a proximal end attached to a distal end of the distal elongate member. The proximal elongate member can be rigid, and the distal elongate member can be flexible.

Abstract: Well screen fabrication. A method of fabricating a well screen includes the steps of: providing a filter portion having an inner dimension, and then increasing the inner dimension, the providing and increasing steps being performed prior to installing the well screen in a wellbore. Another method of fabricating a well screen includes the steps of: providing a base pipe having an outer dimension, providing a filter portion having an inner dimension less than or equal to the outer dimension, then increasing the inner dimension to greater than or equal to the outer dimension, and then decreasing the inner dimension. Another method of fabricating a well screen includes the steps of: providing a base pipe having an outer dimension, providing a filter portion having an inner dimension, and then providing an interference fit between the inner and outer dimensions.

Abstract: Well screen fabrication. A method of fabricating a well screen includes the steps of: providing a filter portion having an inner dimension, and then increasing the inner dimension, the providing and increasing steps being performed prior to installing the well screen in a wellbore. Another method of fabricating a well screen includes the steps of: providing a base pipe having an outer dimension, providing a filter portion having an inner dimension less than or equal to the outer dimension, then increasing the inner dimension to greater than or equal to the outer dimension, and then decreasing the inner dimension. Another method of fabricating a well screen includes the steps of: providing a base pipe having an outer dimension, providing a filter portion having an inner dimension, and then providing an interference fit between the inner and outer dimensions.