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The Bjork-Shiley Heart Valve By Daniel Wec. Brief Overview The Bjork-Shiley Heart Valve is an artificial heart valve used to deal with defective heart.

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Presentation on theme: "The Bjork-Shiley Heart Valve By Daniel Wec. Brief Overview The Bjork-Shiley Heart Valve is an artificial heart valve used to deal with defective heart."— Presentation transcript:

1 The Bjork-Shiley Heart Valve By Daniel Wec

2 Brief Overview The Bjork-Shiley Heart Valve is an artificial heart valve used to deal with defective heart valves or heart valvular diseases. It is a mechanical heart valve and has been in use since the 1970s. It is based on a tilting disc design where two struts (inlet and outlet) allow the disc to open and close to enable the blood to flow through.

3 History 1969 – The Bjork-Shiley Heart Valve is developed by Dr. Viking Bjork and Donald Shiley. 1970s – It is one of the most common mechanical heart valves to be implanted in patients who require an artificial heart valve. 1979 – Pfizer buys out Shiley, Inc and creates secrecy agreements which prevent important information (faulty outlet tip) to be released to the FDA and doctors. 1986 – FDA takes the heart valve off the market. 1992 – Pfizer sells Shiley’s businesses to Sorin Biomedical. 1994 – Lawsuit is settled and Pfizer is to pay around $20 million (some estimates are closer to $200 million.)

4 Currently Alliance Medical Technologies purchased the heart valve line from Sorin Biomedical. The firm has former Shiley and Pfizer employees working for it.

5 Limitations Open-Heart Surgery Blood Thinning Medication Backflow Blood Infection Blood Tests 30 year lifespan

6 Future The Bjork-Shiley Heart Valve can once again become used and if it is, the following are improvements that can be made to allow the device to function better: Remove the need for blood thinning medication. Reduce the amount of backflow. Lower the risk of blood infection. Increase the time between blood tests from 4-6 weeks or possibly even remove the need for blood tests at all. Increase the durability and, in turn, the lifespan of the device.

7 Works Cited "Artificial Heart Valve." Wikipedia. N.p.. Web. 24 Nov 2012. "Bjork Shiley Heart Valve." Lawyers and Settlements. N.p., 24 2012. Web. 24 Nov 2012. "Bjork-Shiley valve." Wikipedia. N.p.. Web. 24 Nov 2012. "Mechanical Heart Valves." cedars-sinai. N.p., n.d. Web. 24 Nov 2012. { "@context": "http://schema.org", "@type": "ImageObject", "contentUrl": "http://images.slideplayer.com/14/4247233/slides/slide_7.jpg", "name": "Works Cited Artificial Heart Valve. Wikipedia. N.p..", "description": "Web. 24 Nov 2012. Bjork Shiley Heart Valve. Lawyers and Settlements. N.p., 24 2012. Web. 24 Nov 2012. Bjork-Shiley valve. Wikipedia. N.p.. Web. 24 Nov 2012. Mechanical Heart Valves. cedars-sinai. N.p., n.d. Web. 24 Nov 2012.


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