A sling for supporting a urethra in a patient has characteristics for resisting pull-out, roll-over and a combination of both pull-out and roll-over. To facilitate resistance to pull-out, sling material has protuberances or serrations to resist movement once placed in the patient by the surgeon. Improved...http://www.google.co.uk/patents/US20040006353?utm_source=gb-gplus-sharePatent US20040006353 - Sling for supporting tissue
