Documents / Report
This Defense Intelligence Agency reference document, dated 31 March 2010 (DIA-08-1003-020), was one of a series of advanced technology reports produced in FY 2009 under the Advanced Aerospace Weapon System Applications (AAWSA) program. It surveys biosensors and BioMEMS, covering brain-implanted neuroelectrodes, drug-delivery pumps, implantable glucose sensors, brain-machine interfaces, retinal prostheses, microfluidic lab chips, NASA cell culture systems, and microcantilever sensors. It concludes that the field is expanding rapidly toward nanomechanical systems.
“Roe”1 page
UNCLASSIFIED/ ,'1"91'1 91"1"!!!11tt tl!!II!! 9HL"i' Figure 24. A Representation of the Retinal Prosthesis: (A) camera in the glass frame, (BJ wireless transmitter, (CJ extraocular electronic case (receiver), and (D) intraocular implant electrode array (http:// bi o med . brown. ed u/Cou rses/BI 108/ 20 06- 108 websites/group 03 retina Ii rn pla nts/i nte roe cu la r. htrn ) -~- •'.. .., '. • ' . . .,. Figure 25. A BioMEMS-Fabricated 4x4 Microelectrode Retinal Array (http:// bi o med. brown. ed u/Cou rses/BI 108/2006- l OBwebsites/ grou p03 ret1nalimplants/interoccular. htm) A retinal based neuroprosthesis is designed to use electrical pulse stimulation of the remaining viable retinal cells to evoke the sensation of light at discrete points within the visual field. These apparent points of light are called phosphenes. The strategy is to pulse the retina with sufficiently close-spaced electrodes such that the phosphenes would combine to present an organized pattern to the patient's perceptions. A completely implanted device is desired that has the electrode array connected to a pulse driver circuit, power, and signal processing. All of these components must be miniaturized as much as possible so the entire device can be implanted. Microimplantable devices based on BioMEMS structures are being developed that capture their power from outside the body by wireless techniques. Bidirectional communication is often needed to provide feedback on device function. Some communication links need a wide bandwidth for real-time data transmission and this is challenging since such types of communication are inherently of a high power drain. Figure 26 is an artist's conception of the retinal implant designed by the Boston group. 28 UNCLASSIFIED/ ,'f811. 8ffllil,'\I! tl!il! 811L¥
Not linked to a story yet.
Report, from the dia collection. The PDF is mirrored here; the original link is above. 45 pages are in the text index: search them above, or from the library's search.