Sally Centrifuge (Salad Spinner Centrifuge)

From Appropedia
About this medical device
Sally3.jpg
Status Clinical trial
Replicated in Africa, Asia, South America
Health topic Maternal mortality
Health classification Diagnosis
License data
Hardware CC BY-SA 4.0
Documentation data

Problem being addressed[edit | edit source]

Anemia is a major cause of maternal mortality and it remains a prominent issue in developing countries. Methods to accurately diagnose this condition are inadequate in these regions. The Sally Centrifuge, with its mechanically-powered, cost-efficient and portable design, hopes to bring accurate diagnostic technology to low-resource areas.

Detailed description of the solution[edit | edit source]

The Sally Centrifuge is composed of hair combs, a salad spinner and a round plastic container. It spins small capillary tubes filled with blood for ten minutes with manual pumping. A rudimentary gauge is then used to assess hematocrit values (or the ratio of red blood cells to the total volume) to determine whether a person is anemic. The centrifuge can spin up to 30 samples in ten minutes at a rate of 950 rpm.

Describe its relevance to resource-constrained settings[edit | edit source]

The Sally Centrifuge is optimal for use in resource-constrained settings because it does not require electricity. It is inexpensive, lightweight, portable, robust and fairly easy to operate. Moreover, studies have shown that it is considerably accurate and effective.

Designed by[edit | edit source]

  • Designed by: Lauren Theis and Lila Kerr, two undergraduate students of Rice University's 360: Institute for Global Health Technologies

References[edit | edit source]

Peer-reviewed publication[edit | edit source]

Brown, J., Theis, L., Kerr, L., Zakhidova, N., O'Connor, K., Uthman, M. Z., Oden, M., Richards-Kortum, R. (2011). A Hand-Powered, Portable, Low-Cost Centrifuge for Diagnosing Anemia in Low-Resource Settings. The American Journal of Tropical Medicine and Hygiene, 85 (2) 327-332.

Internally generated reports[edit | edit source]

Hand-Powered Centrifuge. Rice 360: Institute for Global Health Technologies. Link available here.

Externally generated reports[edit | edit source]

Salad Spinner centrifuge for anemia. (2011). Maternova: Tools and Ideas that Save Mothers and Infants. Link available here.