Materials - 3147vg.webnode.page

Synthetic vascular graft - Nylon

Mon, 05 Dec 2011 22:29:00 +0200

Characteristics of Nylon : heat resistance dry/wet service capability fatique resistance used in non-lubricated operation noise dampening electrical insulator chemical resistance and lastly mach inability It has similar mechanical properties to Teflon and Dacron, makes it ideal material for synthetic vascular graft. Limitations : It doesn’t have a level of thrombogenicity as low as Teflon and Dacron (14) Way to overcome : The nylon graft will undergo...

Synthetic vascular graft - Teflon

Sun, 04 Dec 2011 20:47:00 +0200

Teflon or polytetrafluoroethylene (PTFE) is a synthetic fluoropolymer of tertrafluoroethylene which has high-molecular-weight compound consisting wholly of carbons and fluorine. High conducive properties (can conduct thermal energy and the body’s electric current efficiently) In woven fabirc form, the teflon needs not previous clotting. When knitted into a porous mesh, (espended PTFE) it is highly malleable even though clotting has to be conducted before...

Synthetic vascular graft - Dacron

Tue, 29 Nov 2011 00:32:00 +0200

Also known as Polyethylene Terephthalate, Dacron comes into two forms which are woven and knitted form. Woven Dacron low porosity (<500ml/ cm2/ min), no need pre-clotting strong stiff (non-stretchable poor handling frays at cut edges Knitted Dacron high porosity (1200-1900 ml/ cm2/ min) need pre-clotting less durable dilate softer better handling do not fraying Ways of modification of Dacron for better vascular...

Biological vascular graft

Tue, 18 Oct 2011 22:29:00 +0200

Autograft, Allograft and Xenograft. Autograft is a procedure where patient having their vessels taken from another graft or site in patient. (eg. long saphenous vein in peripheral vascular surgery. In thoracic surgery the use of internal mammary artery for coronary artery bypass). Allograft is vessel taken from different individual of same species. (eg. externally supported umbilical vein). Allograft accounts for many human transplants, including those from cadaveric,...