1. Date of download: 6/22/2016 Copyright © ASME. All rights reserved. From: A New Surgical Device for Minimally Invasive “Core-Out” Excision of High Fistula-in-Ano J. Med. Devices. 2013;7(1):015001-015001-7. doi:10.1115/1.4023130 New fistulectomy set (a) configuration of the new mechanism, (b) head of the device Figure Legend:

2. Date of download: 6/22/2016 Copyright © ASME. All rights reserved. From: A New Surgical Device for Minimally Invasive “Core-Out” Excision of High Fistula-in-Ano J. Med. Devices. 2013;7(1):015001-015001-7. doi:10.1115/1.4023130 Tubular blade (a) a typical tubular blade, (b) main design parameters of tubular blade Figure Legend:

3. Date of download: 6/22/2016 Copyright © ASME. All rights reserved. From: A New Surgical Device for Minimally Invasive “Core-Out” Excision of High Fistula-in-Ano J. Med. Devices. 2013;7(1):015001-015001-7. doi:10.1115/1.4023130 Schematic view of the special cannulated screw (a) radial view, (b) axial view Figure Legend:

4. Date of download: 6/22/2016 Copyright © ASME. All rights reserved. From: A New Surgical Device for Minimally Invasive “Core-Out” Excision of High Fistula-in-Ano J. Med. Devices. 2013;7(1):015001-015001-7. doi:10.1115/1.4023130 α is versus θ at three different outward angles Figure Legend:

5. Date of download: 6/22/2016 Copyright © ASME. All rights reserved. From: A New Surgical Device for Minimally Invasive “Core-Out” Excision of High Fistula-in-Ano J. Med. Devices. 2013;7(1):015001-015001-7. doi:10.1115/1.4023130 Representation of the minimally invasive “core-out” excision procedure by the new fistulectomy set. (a) Passing the guidewire through the tract and fixing its spherical tip in the rectum, (b) inserting the rear end of the guidewire in the central conduit of the cannulated screw and moving the device along the guidewire toward an external orifice, (c) excising fistula by rotating the handles and pushing them forward, (d) removing the device from fistulectomy lumen. Figure Legend:

6. Date of download: 6/22/2016 Copyright © ASME. All rights reserved. From: A New Surgical Device for Minimally Invasive “Core-Out” Excision of High Fistula-in-Ano J. Med. Devices. 2013;7(1):015001-015001-7. doi:10.1115/1.4023130 Laboratory test (a) excision of a fistula model by means of the new set, (b) the separated tissue is pulled into the translucent tube by clockwise rotation of the cannulated screw Figure Legend: