Sutureless Percutaneous Anastamosis Device Steve Chen Jamal Siddiqui
Advisor Dr. Raul Guzman –Assistant Professor of Surgery and Cell Biology, Vanderbilt University –Division of Vascular Surgery –Vanderbilt University Medical Center
Peripheral Arterial Disease Narrowing of the arteries that supply the legs with blood million affected Risk factors Symptoms: –Leg/Buttock pain and numbness –Claudication –Stroke –Heart Attack
Alternative Methods Healthy Diet Refrain from smoking Regular exercise Angioplasty
Problem Current aortobifemoral bypass surgeries are invasive and require long recovery periods.
Current Method
Problems with Current Method Invasive Long Recovery Time in Hospital –5 - 7 days –Bedrest Long Recovery Time outside Hospital Prominent Scarring Risk of infection
Solution To create a sutureless percutaneous anastomosis device to allow the aortobifemoral bypass surgery to be performed laparoscopically.
Laparoscopic Method Anesthesia Insufflation w/ CO2 ~15mmHg Camera and 2-3 trocars inserted Corrections made Sew back up
Design Constraints Tube inside diameter 6mm Account for variety of thicknesses of vessel wall Biocompatible Very stable Safe shape
Head piece: nitinol Plastic tubing Anchor piece Design Stages Infrarenal Aorta
Market 26,200 surgeries per year Only severely diseased need surgery Men/Women over 50 –Diabetics –Smokers –High cholesterol –High blood pressure
Future Applications Microlaparoscopy Computer Motion –Robotic surgery –Minimally invasive –Accurate dissection
References sp sp blications/vascular_abstracts.cfm blications/vascular_abstracts.cfm p?f=pad_comprehend&b=understandingpad&c=cardio_p adaware&transcript=yes&spg=VID p?f=pad_comprehend&b=understandingpad&c=cardio_p adaware&transcript=yes&spg=VID ralbypass/vs html ralbypass/vs html