Office of Technology Transfer – University of Michigan

DC Handle - Cardiology Stethoscope Handle

Technology #2018-277

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DC Handle - Instituion User License
DC Handle - Individual User License
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Christopher Connolly
Medical Student
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Seong-Hee Yoon
Rehabilitation Engineering
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Managed By
Drew Bennett
Associate Director - Software Licensing 734-615-4004
Kristen Wolff
Senior Licensing Specialist, Medical Devices 734-647-5604

The "Cardiology Stethoscope Handle" allows individuals with limited dexterity to hold and use a cardiology stethoscope effectively.  In order to use a cardiology stethoscope, individuals must be able to listen through both the bell and diaphragm.  A standard fixed handle cannot be used on a cardiology stethoscope as it would block the use of either the bell or diaphragm.  The "Cardiology Stethoscope Handle" developed flips over both the bell and diaphragm of a cardiology stethoscope to allow use of either side.

The DC handle stethoscope handle was designed by a medical student to optimize his own experience and capabilities. A clear, user centered design allows for ease of use and practical clinical application.

Package: This license provides a full set of .STL design files which the user can take to any qualified 3D printer for local generation of the product or via an online service provider.

Individual License: Allows for the production of two DC handle outputs for personal use.

Institution License: Subscription allows for unlimited outputs at an institutional level and is renewable on an annual basis.


  • Use specific add-on component, design optimized for limited dexterity individuals
  • Improves effectiveness of all primary patient assessment techniques utilizing a stethoscope


  • Aids limited dexterity users to utilize off the shelf, traditional stethoscope in primary assessment practice
  • Low cost, easy to use
  • Local production and delivery