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The WalkAide System

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Decreased sensation / proprioception. Combined orthotic / FES ... Improved proprioception. Evidenced-Based Benefits of FES / TES. Improved walking performance ... – PowerPoint PPT presentation

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Title: The WalkAide System


1
The WalkAide System
  • The WalkAide is a new battery-operated, single
    channel electrical stimulator that can be used
    for functional electrical stimulation.

2
The WalkAide System
  • Design Criteria
  • Self-contained
  • Built-in sensors
  • Single-handed donning and doffing
  • Self-aligning
  • Comfortable
  • Low profile
  • Lightweight

3
The WalkAide System
  • One unique feature of the WalkAide is that it
    uses a Tilt Sensor to control stimulation during
    walking, thus eliminating the need for additional
    wires from a heel sensor.
  • Expands shoe wear options for patients.

4
The WalkAide System
  • WalkAnalyst is a sophisticated computer software
    program that optimizes individual gait data for
    the unique needs of each patient.
  • Bluetooth technology allows wireless transmission
    between the WalkAnalyst software and the WalkAide
    stimulator.

5
Functional Electrical Stimulation (FES)
  • FES is applicable to central nervous system (CNS)
  • and/or upper motor neuron (UMN) involvements
  • INDICATIONS for WalkAide
  • With CNS pathology, the nerve to muscle pathway
    is intact, voluntary messages cannot get out.
  • CONTRAINDICATIONS for WalkAide
  • With PNS pathology, either nerve or muscle insult
    prevents transmission of messages.

6
Patient Populations
  • Who is medically eligible?
  • General patient profile
  • Joints that can move throughout the range needed
    (i.e. only minor contractures)
  • Good general health
  • Acceptance of technology
  • Skin sensation than can tolerate surface
    electrodes
  • Emotionally stable and realistic optimistic and
    motivated
  • Committed to follow-up appointments

7
Patient Populations
  • INDICATIONS
  • Upper motor neuron lesions
  • CVA or stroke
  • Incomplete SCI (T6? T12?)
  • Traumatic brain injury
  • Cerebral palsy
  • Multiple sclerosis
  • Familial hereditary spastic paraplegia (FSP)

Incomplete SCI
8
Patient Populations
  • CONSIDERATIONS
  • Limited walking potential
  • Decreased sensation / proprioception
  • Combined orthotic / FES treatments

9
Patient Populations
  • Other factors
  • History of falls
  • Severe cardiac disease or pacemaker
  • History of seizures
  • Pregnancy
  • Existing skin irritation around electrode site
  • Fixed PF contracture
  • Morbid obesity (BMI gt 40)
  • Dysesthetic pain
  • Inappropriate response to stimulation
  • Unable to safely operate
  • CONTRAINDICATIONS
  • Lower motor neuron involvements
  • Poliomyelitis
  • Sciatica
  • Spinal stenosis
  • Guillain-Barre
  • Peripheral nerve injury
  • Spinal disc injury

10
Functional Electrical Stimulation (FES)
  • With injury to the CNS, command center signals
    between the CNS and the PNS are disrupted.
  • Electrical stimulation over the motor nerve sends
    information in two directions
  • Distally to create a functional movement, and
  • Proximally to enhance central walking patterns or
    programs.

11
Therapeutic Electrical Stimulation (TES)
  • Therapeutic objective of electrical stimulation
  • Treat the entire neuromusculoskeletal system
  • Increase strength and endurance
  • Maintain range of motion
  • Reduce / delay / reverse muscle atrophy
  • Increase circulation
  • Reduce the incidence of injury
  • Maintain or increase bone density
  • Muscle re-education and facilitation
  • To re-establish or improve voluntary control
  • Improve motor recovery
  • Reduce hypertonicity
  • Improve sensory awareness

12
Therapeutic Electrical Stimulation (TES)
  • Using the Exercise Mode
  • Patient is seated in comfortable, relaxed
    position with WalkAide in place.
  • Exercise Mode is triggered by pressing and
    holding the button.
  • ON and OFF times are determined by the
    medical team.
  • Sessions up to 30 minutes can be programmed.

13
Evidenced-Based Benefits of FES / TES
  • Reduce spasticity
  • Carryover effect
  • Reduced effort in walking
  • Slow osteoporosis, bone mineral loss
  • Reduce swelling, formation of blood clots (deep
    venous thrombosis)
  • Improve cardiovascular health / endurance
  • Increased walking speed
  • Synergy decrease
  • Improved proprioception

14
Evidenced-Based Benefits of FES / TES
  • Improved walking performance
  • Improved voluntary control
  • Increased forcefulness of voluntary contraction
  • Increased rate of improvement during acute phase
    of rehabilitation
  • Improved swing phase kinematics
  • Improved symmetry
  • Improved floor contact patterns
  • User preference / satisfaction

15
Summary
  • Electrical stimulation is a rapidly advancing
    medical technology that should be undertaken ONLY
    under the continual guidance and supervision of
    trained health care professionals.
  • FES holds great potential to improve the health,
    well-being and quality of life of many people.

16
www.ininc.us
17
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