Archive from the Spring 2001 semester.

Mechanical Valve for Bodily Fluid Drainage

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Testing

We received the ASCO Red Hat Valve April 8, and were able to test it April 10. Below, Sarah and and Shannon found it took 35 seconds to drain 500mL of water through the Red Hat valve.
Sarah and Shannon tested how long it took the Red Hat valve to drain 500 mL of water using  the valve, some tubing, and a funnel.

 

We received the P-150 Pinch valve on April 18 and have been continually testing it ever since:

The tubing was held in the pinch valve for two weeks, and carefully examined for any damage signs, such as cracking.
As shown in the picture, a momentary switch allows the liquid in the leg bag to be emptied at the user's discretion.  The valve itself pinches off the tubing coming from the bottom of the bag, and can be worn around the ankle using the stylish velcro and denim harness.  The system operates off of a 24 volt power supply.

The bag was filled and emptied numerous times to ensure the valve worked properly, the tubing stayed in place, and the quick snapping shut of the valve did not damage the tubing.
Sarah and Angie demonstrate how the bag was emptied during the testing trials.

The bag was actually worn for a day to classes to ensure that even motion, which is not really a high concern, did not cause any problems or leaking. The valve and tubing survived walking, biking, and a dynamics experiment...but the plastic of the leg bag did not fare as well, and the test had to come to an end.
The leg bag itself can be worn using the provided elastic straps either around the thigh or the calf.  The valve fits into a velcro harness so that it can be fastened around the ankle and clamped onto the tubing coming from the bottom of the bag.

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Contact Information

For more information concerning the project or this website, please contact Angela at alheppner@students.wisc.edu.

 

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Owner: Willis Tompkins, Ph.D.
Author: Angela Heppner.
Content updated: April 11, 2001.
Page updated: April 28, 2002, B.J.

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