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This Defense Intelligence Reference Document, dated 31 March 2010 and numbered DIA-08-1003-020, was prepared by the Defense Intelligence Agency's Defense Warning Office under its Advanced Aerospace Weapon System Applications Program. It surveys biosensors and biomedical microelectromechanical systems, covering brain-implanted micromachine neuroelectrodes, drug-delivery pumps, glucose sensors, neural interfaces, retinal prostheses, microfluidic lab chips, NASA cell-culture systems and microcantilever sensors. It concludes that the field is expanding rapidly, with nanomechanical systems expected to follow.
From the source:Release of 2026-09-18 Incident: 3/31/10, Las Vegas, Nevada. Released with redactions. This document is a Defense Intelligence Reference Document (DIRD), a technical reference format used by the Defense Intelligence Agency (DIA) to capture baseline knowledge on a specific topic for later analytic use. DIRDs are best understood as reference and synthesis products rather than as original research. It is one of 38 DIRDs produced under the Advanced Aerospace Weapon System Applications Program (AAWSAP) between 2009 and 2011. Because AAWSAP’s scope permitted a broad range of supporting topics, not every DIRD in the series directly concerns aerospace systems or future threat assessment. The following summary reflects the DIRD’s scope and framing at the time of writing and should not be read as implying current validation of the concepts discussed. This DIRD surveys biosensors and BioMEMS, a broad class of miniature biomedical devices that combine microscale engineering with sensing, fluid handling, stimulation, or drug-delivery functions. The report reviews major application areas including implantable blood-chemistry sensors, neural interfaces, neurostimulation, drug-delivery pumps, microfluidic systems, and emerging nanoscale extensions of the field, while emphasizing that miniaturization can improve sensitivity and enable functions that are difficult or impossible at larger scales. However, it also makes clear that practical development is constrained by biocompatibility, long-term stability, sensor drift, device degradation inside the body, and the high regulatory burden associated with implantable medical systems. The document presents BioMEMS as a rapidly growing and productive field whose future advances are likely to come through continued improvements in fabrication, materials, and reliability.
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Figure 27. Power Transfer by Magnetic Induction to an Implanted BioMEMS Retinal Prosthesis. This is
the Boston Retinal Implant Project.
(http://www. bostonretina Ii m plant. org/ retina Iapproach. php ?fontsize= norm al&hicontrast)
MICROSCALE IN THERAPEUTIC NEUROSTIMULATION
Some of the biggest excitement in medical neuroprosthetics has been in the notion that
we can use micro-implantable devices rather than drugs to reduce or better control the
effects of stroke, heart disease, epilepsy, and other disorders of the human condition.
Bioelectrical stimulation has effects which are very specific on local tissues rather than
indiscriminately affecting all tissues and so may offer fewer side effects of drugs. Such
devices can be finely controlled in their effects and provide a greater flexibility in terms
of treatment.
Any implanted device has to be small in order to be minimally invasive, especially in the
brain. Powering of implanted devices by batteries is only practical in a few biomedical
situations. Also implants may need to communicate with the outside world wirelessly.
Having wires penetrating the skin is uncomfortable and could lead to infection in the
tissue.
The notion of placing bioelectronic stimulation devices inside of the body for therapeutic
reasons goes back to the early invention of the pacemaker. These kind of devices have
internal batteries to support an electrical pulse generator that paces the rhythm of the
heart.
Because the amount of energy in each pulse is relatively small the power drain is low
and t he pacemaker batteries can last years. The difficulty is that they are bulky, must
be eventually replaced on the order of seven years, and their placement is invasive.
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Official release, from the pursue 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.