Unleashing innovation to support field medics, corpsmen
Imagine unmanned vehicles bringing medical supplies or blood products to support a field medic’s care of wounded soldiers, or even transporting a wounded warfighter to safety. Researchers at the Army’s Telemedicine and Advanced Technology Research Center, or TATRC, are collaborating with the services, academia, and private industry to make such scenarios a reality.
“Our Medical Robotics and Autonomous Systems or MED-RAS research projects are focused on extending up-and-coming robotics and autonomy technologies to military medicine,” said Dr. Gary Gilbert of the Army Futures Command Medical Research and Development Command, Telemedicine and Advanced Technology Research Center at Fort Detrick, Maryland. Gilbert and his team have four research objectives to mirror themes identified by the Department of Defense “Unmanned Systems Integrated Roadmap 2017-2042”: interoperability, autonomy, network security, and human-machine collaboration.
Last year, the Armed Services Biomedical Research Evaluation and Management Community of Interest, which includes members from across the Department of Defense, met to discuss how autonomous evacuation and care could support military medical services in the field. Their report described the need for a cross-services effort to build strategic partnerships within DoD that make implementation possible.
The MED-RAS research projects build upon technological advancements that will enhance the expertise and skills of medics and corpsmen on the battlefield through the use of artificial intelligence-based tools, such as mobile devices or drones that can deliver needed technology. Gilbert explained that such assistance will serve multiple purposes. It will provide support to make informed treatment decisions, perform artificial intelligence-based patient monitoring and diagnosis, and automatically record the patient’s data.
The TATRC team is also researching how to support wounded service members for long periods of time using robotic devices that automatically medicate patients and assist with breathing or replacing fluids, according to Rebecca Lee, a TATRC biomedical engineer. Such advances, combined with drone delivery of medical supplies or blood products, could be force multipliers for field medics or corpsmen who can’t evacuate casualties quickly due to inaccessible terrain or enemy threats.
The third research effort, according to Nathan Fisher, a robotics and mechanical engineer and another member of the TATRC team, focuses on developing medical technologies that are less or not at all reliant on a medic’s assistance, such as diagnosing a patient, taking X-ray images, and evacuating casualties without a human being present. Future breakthroughs in robotic technology could also enable remote surgery capabilities in forward environments, Fisher explained.
Before robotic care and unmanned casualty evacuation can occur, a more rugged, military-grade generation of computerized medical equipment must be developed. “We are meeting this need with the Automated Critical Care System, or ACCS, essentially an intensive care unit for the field,” said Dr. Timothy Bentley of the Office of Naval Research, or ONR. The ACCS rides under the casualty’s litter providing continuous monitoring and therapeutic care during prolonged evacuations. Medical data are sent to distant physicians; medical guidance is sent back to the ACCS.
“Working with Dr. Gilbert and his colleagues at TATRC, we will be able to integrate the ACCS into future UAVs,” said Bentley.
To address Marine Corps interest in enhancing ground evacuation, ONR is working with Australian researchers and the Australian Defence Force. The U.S. Marine Corps and Australian Defence Force are similar in size and share many mutual casualty-care challenges: long distances, limited personnel, and multi-purpose vehicles and helicopters. Additionally, the Australian research team brings technical, medical, and military expertise, as well as past collaboration with ONR to address specific military casualty care evacuation challenges. The ACCS will ride on a self-driving vehicle built to reduce jolts during travel over rough terrain. Medical data, presented on a heads-up display, will allow a medic or corpsman to monitor, provide care, and transport one or more casualties during stabilization and evacuation.
Such new systems are not challenge-free. “Autonomous care systems are innovative and while they reduce some risks, they introduce others that must be managed,” said Army Lt. Col. Eric Midboe, director of Research and Technology at the Research and Development Directorate of the Defense Health Agency. Adoption will mean that technology, logistics, and medical care have been integrated, which in turn “will require extensive education for everyone involved, from senior leaders to corpsmen and medics, as to how such a new system of patient care delivery might work,” Midboe added.
Douglas E. Moore, a retired Army colonel and helicopter pilot who flew medevac missions in Vietnam, confirmed the complexity of autonomous care scenarios in recent times as opposed to historic warfare. “You knew where the enemy was and there was a defined locus of control in terms of front lines that was assumed by both sides. In Iraq and Afghanistan, and most likely in future battles, there’s no ownership, no front line. You may control a small space in a neighborhood, but the enemy surrounds you, so how do you get aircraft in and out?”
Autonomous medical care is beginning to move into the mainstream. In Africa, medical centers are being resupplied by UAVs. In the United States, a drone delivered a kidney for transplantation from one Baltimore, Maryland, hospital to another across the city.
“Development of semi-autonomous to fully autonomous medical care and transport systems will be a tremendous force multiplier,” said Midboe. “With the right leadership and financial support, we’ll be able to collaborate across the services and engage with industry to capitalize on the newest technology and execute our autonomous care and evacuation capability goals.”
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