Sutureless Percutaneous Anastamosis Device Steve Chen Jamal Siddiqui.
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Transcript of Sutureless Percutaneous Anastamosis Device Steve Chen Jamal Siddiqui.
Sutureless Percutaneous Sutureless Percutaneous Anastamosis DeviceAnastamosis Device
Steve ChenSteve Chen
Jamal SiddiquiJamal Siddiqui
AdvisorAdvisor
Dr. Raul GuzmanDr. Raul Guzman– Assistant Professor of Assistant Professor of
Surgery and Cell Biology, Surgery and Cell Biology, Vanderbilt UniversityVanderbilt University
– Division of Vascular Division of Vascular SurgerySurgery
– Vanderbilt University Vanderbilt University Medical CenterMedical Center
Peripheral Arterial DiseasePeripheral Arterial Disease
Narrowing of the arteries that Narrowing of the arteries that supply the legs with blood.supply the legs with blood.
8-12 million affected8-12 million affected
Risk factorsRisk factors
Symptoms:Symptoms:– Leg/Buttock pain and numbnessLeg/Buttock pain and numbness– ClaudicationClaudication– StrokeStroke– Heart AttackHeart Attack
Alternative MethodsAlternative Methods
Healthy DietHealthy Diet
Refrain from smokingRefrain from smoking
Regular exerciseRegular exercise
AngioplastyAngioplasty
ProblemProblem
Current aortobifemoral bypass surgeries Current aortobifemoral bypass surgeries are invasive and require long recovery are invasive and require long recovery periods.periods.
Current MethodCurrent Method
Problems with Current MethodProblems with Current Method
InvasiveInvasive
Long Recovery Time Long Recovery Time in Hospitalin Hospital– 5 - 7 days5 - 7 days– Bedrest 2 - 4Bedrest 2 - 4
Long Recovery Time Long Recovery Time outside Hospitaloutside Hospital
Prominent ScarringProminent Scarring
Risk of infectionRisk of infection
SolutionSolution
To create a sutureless percutaneous To create a sutureless percutaneous anastomosis device to allow the anastomosis device to allow the aortobifemoral bypass surgery to be aortobifemoral bypass surgery to be performed laparoscopically.performed laparoscopically.
Laparoscopic MethodLaparoscopic Method
AnesthesiaAnesthesia
Insufflation w/ CO2 Insufflation w/ CO2 ~15mmHg~15mmHg
Camera and 2-3 Camera and 2-3 trocars insertedtrocars inserted
Corrections madeCorrections made
Sew back upSew back up
Design ConstraintsDesign Constraints
Tube inside diameter 6mmTube inside diameter 6mm
Account for variety of thicknesses of Account for variety of thicknesses of vessel wallvessel wall
BiocompatibleBiocompatible
Very stableVery stable
Safe shapeSafe shape
Head piece: nitinolHead piece: nitinol
Plastic tubingPlastic tubing
Anchor pieceAnchor piece
Design StagesDesign Stages
Infrarenal Aorta
MarketMarket
26,200 surgeries per year26,200 surgeries per year
Only severely diseased need surgeryOnly severely diseased need surgery
Men/Women over 50Men/Women over 50– DiabeticsDiabetics– SmokersSmokers– High cholesterolHigh cholesterol– High blood pressureHigh blood pressure
Future ApplicationsFuture Applications
MicrolaparoscopyMicrolaparoscopy
Computer MotionComputer Motion– Robotic surgeryRobotic surgery– Minimally invasiveMinimally invasive– Accurate dissectionAccurate dissection
ReferencesReferences
http://www.lapsurgery.net/how_lapsurg.asphttp://www.lapsurgery.net/how_lapsurg.asphttp://www.vascularlaparoscopy.org/ilvc_techniques.htmlhttp://www.vascularlaparoscopy.org/ilvc_techniques.htmlhttp://my.webmd.com/hw/health_guide_atoz/aa118239.ahttp://my.webmd.com/hw/health_guide_atoz/aa118239.aspsphttp://computermotion.wwwa.com/clinicalapplications/puhttp://computermotion.wwwa.com/clinicalapplications/publications/vascular_abstracts.cfmblications/vascular_abstracts.cfmhttp://www.understandingpad.com/webcast_transcript.ashttp://www.understandingpad.com/webcast_transcript.asp?f=pad_comprehend&b=understandingpad&c=cardio_pp?f=pad_comprehend&b=understandingpad&c=cardio_padaware&transcript=yes&spg=VIDadaware&transcript=yes&spg=VIDhttp://www.nlm.nih.gov/medlineplus/tutorials/aortobifemohttp://www.nlm.nih.gov/medlineplus/tutorials/aortobifemoralbypass/vs019101.htmlralbypass/vs019101.htmlwww.laparoscopy.comwww.laparoscopy.com