Office of Technology Transfer – University of Michigan

Device for control of junctional non-compressible hemorrhage

Technology #5827

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Kevin Ward
Managed By
Bryce Pilz
Director Licensing 734-615-8433
Patent Protection
US Patent Pending
US Patent Pending

Non-compressible hemorrhage from vascular injury of pelvic, groin and abdominal areas is extremely difficult to treat and is the leading cause of potentially survivable deaths on the battlefield. Patients who have penetrating wounds to the trunk are at risk of severe injuries to major vessels, causing massive hemorrhage. The control of bleeding and limitation of blood loss is the only way to avoid the problems associated with massive hemorrhage in trauma.

Researchers at the University of Michigan have invented a portable, compact device that can be used to selectively exert pressure on areas of the body of an injured individual where it is otherwise difficult to do so. The device may also be used to provide CPR support in low flow disease states such as hemorrhagic shock and cardiac arrest.

Device for control of junctional non-compressible hemorrhage

In particular, the device may be used to stop bleeding from difficult to compress areas such as the groin, pelvis and abdomen by applying pneumatic compression specifically to the wounded blood vessels. A prototype of the device was tested using in vivo swine models - results showed significant decrease in blood flow with the device in use, and normal blood flow after the device was removed. Additionally, this new device can also be utilized to assist in CPR by exerting pressure on the chest and/or abdominal blood vessels, and this has also been tested successfully in vivo.


  • Portable, easy to use and low-cost device to prevent junctional hemorrhaging
  • CPR adjunct device that can be used to generate pressure on chest and/or abdominal blood vessels
  • Potentially also use to stabilize pelvic fractures


  • Low-cost, potentially reusable device, highly portable, having a very small footprint that allows it to be folded and carried by an individual, e.g. a soldier, or for several to be carried by a medic or other health professional;
  • “Ruggedized” components, i.e. constructed of heavy duty materials that are not easily punctured or otherwise damaged
  • Simple device allows rapid application even by those who do not necessarily have professional medical training, potentially even by wounded individual
  • Allows for rapid transport of a wounded individual without destabilizing the device
  • The device allows for need-based titration of the response to the injury