a tunneling device is provided to assist in passing a suture or tape into a body . the tunneling device includes an outer assembly and an inner member or stylet , having a light transmissive distal tip , positioned within the outer assembly . the outer assembly is provided with a light port or guide to transmit light towards the distal tip of the stylet . the disclosed illuminated tunneling device is particularly adapted for use in an intravaginal slingplasty procedure . the illuminated tunneling device can be provided with an external source of light or may include an integral self - contained source of light . additionally , a light guide , or light tube , may be formed integral with the outer tubular member or may be provided as a separate element .