Preston Steele BME 281
The brains ability to actively rewire itself in response to external stimuli Creation of BION microstimulator based on this
Uses FES(Functional Electrical Stimulation) to send small electric shocks to muscles to induce movement Small capsule with rechargeable battery, antenna and charging coil for electrical impulses inside In glass casing with nickel on the ends 2.1 mm diameter, 16 mm long
1791- Luigi Galvani 1960- Liberson’s drop foot stimulator developed 1989-when AMF began work on the microstimulator 2008-AMF develops working prototypes of injectable microstimulators without exoskeletal system
Non profit organization Main focus in medical research Have worked on other devices such as : ▪ Cochlear implant (hearing impaired) ▪ ▪ Retinal prosthesis (vision) Fully implantable glucose sensor (diabetes)
Uses FES (Funcional Electrical Stimulation) FM device located in motor cortex sends messages in real time down to the relevant muscles Once the message is received the microstimulator sends out an electrical impulse triggering muscle movement
PREVIOUS NOW/ NEAR FUTURE
~ 750,000 people suffer a stroke every year ~11,000 suffer a spinal cord injury ~500,000 live with cerebral palsy ~270,000 with MS ~5.3 mill with after affects of traumatic brain injury
Small and can be imbedded directly in the affected muscle tissues Doesn’t just “fix” the problem – it helps reteach the brain how to use the affected area Can remain safely in the body for up to 80 years
Surgical procedure In operating room
BION implantation tool(BIT) Outpatient office procedure No surgical tools needed
Consists of long cannula(10 cm) Cannula made of Vectra B130-liquid crystal polymer, 30% glass reinforced Cannula has 2 conduction holes at end of probe
Microstimulators that are temperature and pressure sensitive and also respond to touch Possibly applying them to next generation prosthetics Application to lower extremities
Alfred Mann Foundation. 2011. Web. 29 Sept. 2011. >. Hankin, David. “Implantable Microstimulator System: Artificial Nervous System” Annual Conference. Presentation slides from 14 June 2008. Web. 29 Sept. 2011.
>. Hankin, David. “Implantable Microstimulator System: Artificial Nervous System” Annual Conference. Presentation slides from 14 June 2008. Web. 29 Sept. 2011.