Researchers focused on restoring lower-body function after severe spinal injuries using a tiny spinal implant. the new Micro implants can restore standing and walking positions.
In new research, the team showcases a map to identify which parts of the spinal cord trigger the hip, knees, ankles and toes, and the areas that put movements together.
When the researcher first applied to grad school, she wrote about her idea to fix paralysis by rewiring the spinal cord.
It was only after they accepted into a bioengineering program that the young electrical engineer learned her idea had actually prompted laughter.
It’s taken them a lot of work over two decades at the University of Alberta, but the Canada Research Chair in Functional Restoration is still fixated on the dream of helping people walk again.
Because an injured spinal cord dies back, it’s not a matter of reconnecting a cable. Three herculean feats needed.
You have to translate brain signals. You have to figure out and control the spinal cord. And you have got to get the two sides talking again.
People tend to think the brain does all the thinking, but the researcher said, the spinal cord has built-in intelligence.
A complex chain of motor and sensory networks regulate everything from breathing to bowels, while the brain stem’s contribution is “go!” and “faster!” Your spinal cord isn’t moving muscles, it’s giving you your natural gait.
Other researchers have tried different avenues to restore movement. By sending electrical impulses into leg muscles, it’s possible to get people standing or walking again. But the effect is mechanical and not particularly effective.
Researchers have focused on restoring lower-body function after severe injuries using a tiny spinal implant.
Hair-like electrical wires plunge deep into the spinal grey matter, sending electrical signals to trigger the networks that already know how to do the hard work.
The work has shown that the spinal maps have been consistent across the animal spectrum, but further work required before moving to human trials.
The implications of moving to a human clinical setting would be massive but must follow further work that needs to do in animals. Being able to control standing and walking would improve bone health, improve bowel and bladder function, and reduce pressure ulcers.
It could help treat cardiovascular disease as the main cause of death for spinal cord patients while bolstering mental health and quality of life. For those with less severe spinal injuries, an implant could be therapeutic, removing the need for months of grueling physical therapy regimes that have limited success.
That intraspinal stimulation itself will get people to start walking longer and longer, and even faster, a researcher said.
Progress can move at a remarkable pace, yet it’s often slow.
There’s been an explosion of knowledge in neuroscience over the last 20 years,” they said.
Given the nature of incremental funding and research, a realistic timeline for this type of progress might be close to a decade.
A researcher is the director of the SMART Network, a collaboration of more than 100 U of A scientists and learners who break disciplinary silos to think of unique ways to tackle neural injuries and diseases.
That has meant working with researchers like neuroscientist Kathryn Todd and biochemist Matthew Churchward, both in the psychiatry department, to create three-dimensional cell cultures that simulate the testing of electrodes.
The next steps are fine-tuning the hardware miniaturizing an implantable stimulator — and securing Health Canada and FDA approvals for clinical trials.
Previous research has tackled the problem of translating brain signals and intent into commands to the intraspinal implant but, the first generation of the intraspinal implants will must a patient to control walking and movement. Future implants could include a connection to the brain.