Angioplastyballoons

Angioplastyballoons - Introduction to Angioplasty Danny...

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Introduction to Angioplasty Danny Kelly PhD
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What is Angioplasty? z A PTCA ( Percutaneous Transluminal Coronary Angioplasty) balloon catheter is a medical device that is inserted into a clogged artery and inflated to high pressure to clear the blockage (stenosis) and allow blood to flow. z Unlike bypass surgery, the procedure is performed under local anesthetic and the patients chest remains closed, increasing recovery time.
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Overview of Lecture z Brief history of angioplasty z High pressure balloons z Design of angioplasty catheters z Applications of angioplasty catheters Coronary Lower extremity Renal Carotid
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Early catheterizations z 3000 B.C. : Egyptians perform bladder catheterizations using metal pipes z 1711 : Hales conducts the first cardiac catheterization of a horse using brass pipes, a glass tube and the trachea of a goose. z 1929 : First documented human cardiac catheterization is performed by Dr Werner Forssmann.
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Diagnostic Catheter Procedures z 1958 : Mason Sones develops the coronary angiography. This allows accurate diagnosis of coronary disease and sets the stage for future therapeutic interventions. z 1967: Judkins technique of coronary angiography A transfemoral approach: Introducing catheter via a groin puncture rather than via an opening of the brachial artery in the arm
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Therapeutic Catheter Interventions z 1964 : Dr. Charles Dotter investigates the dilation of narrowed arteries. He opened narrowed leg arteries by passing progressively larger catheters through them. The method failed to reach general acceptance because of: Dominance of vascular surgeons. Large number of failures and complications. Puncture site needed to be as large as the maximally attained diameter of the dilated stenosis.
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z 1974: Andreas Gruentzig introduces the concept of balloon dilation of arterial stenosis. Hourglass problem: Available balloon material only expanded around the lesion and did not provide the force necessary to open it. z 1975: Gruentzig develops the first dual-lumen catheter fitted with a polyvinylchloride (PVC) balloon. z
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This note was uploaded on 04/16/2008 for the course EGR 101 taught by Professor K during the Spring '08 term at UMass Dartmouth.

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Angioplastyballoons - Introduction to Angioplasty Danny...

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