Implantable Artificial Kidney

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Presentation transcript:

Implantable Artificial Kidney By: Kyla Murray BME 281 ; Section 1 October 24, 2012

The Function of the Kidney The kidneys are located near the middle of the back, just below the ribcage, one on each side of the spine. Daily, a person’s kidneys process about 200 quarts of blood to sift out roughly 2 quarts of waste products and extra water. The wastes and extra water become urine, which flows to the bladder.

Causes of Kidney Failure Kidneys lose their filtering capacity when they fail. Acute Kidney Injury – losing a lot of blood can cause sudden kidney failure; drugs/poison; a sudden drop in the kidney functioning. Chronic Kidney Failure – gradual loss of kidney function; may go on to develop permanent kidney Failure and are at a high risk of stroke/heart attack. End Stage Renal Disease – (renal meaning how the kidneys filter blood); total or nearly total and permanent kidney failure; must undergo dialysis or transplantation to stay alive.

History of the Artificial Kidney University of California-San Francisco researchers unveiled a prototype model of the first implantable artificial kidney on September 2, 2010. Led by Shuvo Roy, PhD, in the UCSF Department of Bioengineering and Therapeutic Sciences. First Phase (already completed) – focused on developing the technologies required to reduce the device to a size to be tested by animals. Second Phase (current) – doing the work needed to scale up the device for humans. Received $3 million in funding as of October 1, 2012. Plan to go through human clinical trials by 2017.

Current State Two Stage System: First compartment holds thousands of nano-scale filters remove toxins from the blood (dialysis). A second compartment would hold live kidney cells that perform the other biological actions of a real kidney. The entire device would be implanted in the abdomen and powered by the body’s blood pressure, without a need for external pumps or tubes.

What it Plans to Solve Plans to replace dialysis (blood is pumped through an external circuit for filtration; typically three sessions per week, 3-5 hours per session.) U.S. Medicare system spends upwards of $29 billion per year (6 percent of its total budget) to treat kidney failure. $24 billion each year to pay for dialysis. Allows the patient to live a more normal lifestyle; takes less of a toll on them than normal from today’s dialysis. Maintain water and salt balances, produce Vitamin D, and regulate blood pressure.

Current Limitations Is not available for personal use (as of right now). Because it is not available for humans, transplants and dialysis are the only ways to effectively treat kidney failure. Will be costly when first coming out (~$25,000 from $75,000).

Future of the Artificial Kidney Will go through clinical trials and be on the market. Will be more affordable. Remove need for constant dialysis. Will be able to function without rejection or malfunction.

Bibliography Bole, Kristen. "UCSF Unveils Model for Implantable Artificial Kidney to Replace Dialysis." UCSF Unveils Model for Implantable Artificial Kidney to Replace Dialysis. University of California-San Francisco, 2 Sept. 2010. Web. 17 Oct. 2012. <http://www.ucsf.edu/news/2010/09/4450/ucsf-unveils-model-implantable-artificial- kidney-replace-dialysis>. Bole, Kristen. "Artificial Kidney Project at UCSF Receives $3 Million in New Funding." University of California, San Francisco. The Regents of the University of California, 1 Oct. 2012. Web. 22 Oct. 2012. <http://www.ucsf.edu/news/2012/10/12810/artificial-kidney-project-ucsf-receives-3-million-new-funding>. Boyle, Rebecca. "Researchers Announce First Implantable Artificial Kidney Prototype." Popular Science. Bonnier Corporation, 3 Sept. 2010. Web. 17 Oct. 2012. <http://www.popsci.com/science/article/2010- 09/researchers-announce-first-artificial-kidney-prototype>. OneIndiaNews. "Implantable Artificial Kidney Set to Make Dialysis History." OneIndiaNews. Greynium Information Technologies Pvt. Ltd., 3 Sept. 2010. Web. 17 Oct. 2012. <http://news.oneindia.in/2010/09/03/implantableartificial-kidney-set-to-make-dialysishistory.html>. Shadiq, Sheraz. "Scientists Work on New Artificial Kidney." QUEST. S. D. Bechtel, Jr. Foundation, 21 Sept. 2010. Web. 17 Oct. 2012. <http://science.kqed.org/quest/2010/09/21/scientists-work-to-develop-artificial kidney/>. UCSF. "Roy Unveils Model of Bioartificial Kidney - School of Pharmacy." UCSF School of Pharmacy. The Regents of the University of California, 03 Sept. 2010. Web. 17 Oct. 2012. <http://pharmacy.ucsf.edu/news/2010/09/03/1/>. U.S. Department of Health and Human Services. "National Kidney and Urologic Diseases Information Clearinghouse (NKUDIC)." The Kidneys and How They Work Page. National Institute of Diabetes and Digestive and Kidney Diseases, 23 Mar. 2012. Web. 17 Oct. 2012. <http://kidney.niddk.nih.gov/kudiseases/pubs/yourkidneys/>.