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PureSona Stethoscope Diaphragms - Single Patient Use - Monthly Subscription

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    1. Maki, D.G. and Tsigrelis, C. Nosocomial infection in the intensive care unit. in: J.E. Parrillo, R.P. Dellinger (Eds.) Critical Care Medicine. Principles of Diagnosis and Management. (4th ed.). Mosby, Philadelphia, PA; 2014: 825–869

    2. Rosenthal, V.D., Bijie, H., Maki, D.G. et al. International Nosocomial Infection Control Consortium (INICC) report, data summary of 36 countries, for 2004-2009. Am J Infect Control. 2012; 40: 396–407

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    15. Schroeder, A., Schroeder, M.A., and D’Amico, F. What’s growing on your stethoscope? (And what you can do about it). J Fam Pract. 2009; 58: 404–409

    16. Uneke, C.J., Ogbonna, A., Oyibo, P.G., and Onu, C.M. Bacterial contamination of stethoscopes used by health workers: public health implications. J Infect Dev Ctries. 2010; 4: 436–441

    17. Vajravelu, R.K., Guerrero, D.M., Jury, L.A., and Donskey, C.J. Evaluation of stethoscopes as vectors of Clostridium difficile and methicillin-resistant Staphylococcus aureus. Infect Control Hosp Epidemiol. 2012; 33: 96–98

    18. Merlin, M.A., Wong, M.L., Pryor, P.W. et al. Prevalence of methicillin-resistant Staphylococcus aureus on the stethoscopes of emergency medical services providers. Prehosp Emerg Care. 2009; 13: 71–74

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    23. Dijk, Y., Bik, E.M., Hochstenbach-Vernooij, S. et al. Management of an outbreak of Enterobacter cloacae in a neonatal unit using simple preventive measures. J Hosp Infect. 2002; 51: 21–26

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    27. Vos, M.C., Behrendt, M.D., Melles, D.C. et al. 5 years of experience implementing a methicillin-resistant Staphylococcus aureus search and destroy policy at the largest university medical center in the Netherlands. Infect Control Hosp Epidemiol. 2009; 30: 977–984

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    More Information
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    With an insistence on quality and a constant focus on innovation, we strive to deliver first-class instruments that lead the industry in accuracy, safety, and cutting-edge design. Look for these patented features on our stethoscopes:

    • ErgonoMax™ headset: Pat. No. ZL 200820155127.0
    • X-configuration tubing: Pat. No. ZL 200820151419.7
    • ProCardial™ C3 chestpiece: Pat. No. ZL 2011 2 0200178.2
    • SafetyLock™ eartip adaptors: Pat. No. ZL 201020279423.9
    • SoundTight™ GLS Acoustic Valve: Pat. No. ZL 201020279428.1
    • MDF® 740 Pulse Time™ with timepiece: Pat. No. ZL 201030027143.4
    • Lightweight ProCardial-ERA™ chestpiece with dual output valve:
    • PureSona:
      • China Utility Patent App. 201921416253.1
      • China Utility Patent App. 201910805358.4
      • Taiwan Utility Patent App.108211920
      • US Utility Patent Pending
      • Other Int'l Utility Patents Pending


    Accuracy is a constant focus in the medical instrumentation arena. The quest to improve functionality, acoustic sensitivity, precision, and performance is a driving force at the heart of the industry. MDF® instruments is more keenly aware of this challenge than most, with research and innovation at the very core of our business, since this is the future of the medical instruments industry. We are always planning for the future—developing the technical solutions that will lead to the next generation of instruments for improved diagnosis and wellness.


    MDF® Instruments stethoscopes have been handcrafted in the MDF® artisan tradition since 1971. They are super-duty, high-performance medical tools that meet the toughest requirements of precision and accuracy.


    We are insistent on delivering first-class instruments, because quality is the key to all that is significant in our line of work. From conception through the final stage of assembly, our crafters' hands and traditional tools are supplemented by advanced technology. Each instruments is handcrafted and rigorously examined under the stringent scrutiny of state-of-the-art quality mechanisms. But regardless of the latest quality control systems we employ, before each instruments receives the MDF® Seal of Quality, we simply ask ourselves: *Is this good enough for my family?*


    MDF® instruments are super-duty, high-performance medical tools that meet the toughest requirements of precision and accuracy. We apply advanced technological developments and use the best materials for our instruments. Our designers and engineers couple the latest technologies with a unique working process to foster a traditional yet innovative approach. We select both conventional and avant garde materials to ensure durability and reliability. Our instruments are immediately recognizable as simple yet distinctive—a unique combination of functionality and performance.


    Designed to satisfy the senses, MDF® instruments are sleek in design and truly functional—the hallmarks of MDF® creations. Our instruments are distinctive, with classical roots and modern touches. In everything from the individual components to colors selections, MDF® believes in innovation and aesthetics that translate a strong identity of design and style. These distinctive characteristics contribute to the functionality and performance of our instruments.