A surgical device for assisting in the repair and rehabilitation of a tendon, formed of a cylindrical, helically wound braid (similar to a “Chinese finger trap”). The device may be implantable, and configured to enclose the repair site of the severed tendon. As tension or pull is applied to the tendon, the device tightens to secure the repair site. The device may improve mobility and use of the tendon by providing stability to the repair site, improving glide through the tendon sheath, allowing diffusion of nutrients to the repair site, and/or reducing adhesions within the tendon sheath.
