Using Low Cost of Ownership Direct Bonding Technologies For MEMS Application
Application of Mems in Surgery
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Transcript of Application of Mems in Surgery
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APPLICATION OF MEMS
IN SURGERY
SUBMITTED BY
SUCHITH SOMAN.T
EPAHEECO55
GOVT.ENGG COLLEGE
SREEKRISHNAPURAM
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What is MEMS?
MEMS Fabrication
MEMS Devices
Advantages
Future Scope
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WHAT IS MEMS ?
MEMS is the acronym for Micro Electro
Mechanical Systems
It is a technique of combining Electricaland Mechanical components together on a
chip, to produce a system of miniature
dimensions.
Especially actuators and sensors.
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MEMS FABRICATION
Micro-electro discharge machining
Laser Micro Machining
Stereo Lithography
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MICRO ELECTRO DISCHARGE
MACHINING To shape conductive materials
Controlled electronic discharge
Dielectric fluid for :. Removal of erosion particles
. Keeping substrate material from
oxidising
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Classification ofbiological MEMS
devices
Biomedical MEMS deals in vivo, withinthe host body.
precision surgery
Drug delivery
Biosensors and other physical sensors
Biotechnology MEMS deals in vitro, withthe biological samples obtained from thehost body.
gene sequencing D
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MEMS and
PrecisionSurgery
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Micro-surgicaltools
Present day surgeons operate within a do-
main restricted by the mobility and control
of the surgical tools at hand.
MEMS surgical tools provide the flexibility
and accuracy to perform
precision surgery.
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MEMS driven scalpels
Precise control of the scalpel is an
important requirement in any surgery.
MEMS piezoelectric motor help toaccurately position the scalpel.
MEMS pressure sensors incorporated on
the scalpel, can help to measure the force
exerted on the area operated upon.
Accordingly, the scalpel can he handled.
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MEMS Driven Scalpel
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MEMS redefines endoscopy with
Lab on a Pill
Size : 35mmComponents of lab on a pill Digital camera (CMOS Technology)
Light source Battery Radio transmitter Sensors (MEMS Technology)
Requires no sedationCan show a view of the entire small intestineCan aid in early detection of colon cancer
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THE MEMS PILL
INTERNAL STRUC
TURE
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Working ofthis MEMS pill
The pill is intended to be swallowed like anynormal pill.
Once within the body, the pill's sensors sample
body fluids and pick up "meaningful patient data"such as temperature, dissolved oxygen levelsand pH.
The pill is expected to retrieve all data over a 12-
hour period and disposed off, once excreted. This data is transmitted wirelessly to a card
attached to the wrist of the individual.
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MEMSandDrug
Delivery
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MEMS Micro-needles
MEMS enables hundreds of hollow micro-needles to be fabricated on a single patch ofarea, say a square centimeter.
This patch is applied to the skin and drug isdelivered to the body using micro-pumps.
These micro-pumps can be electronicallycontrolled to allow specific amounts of the drugand also deliver them at specific intervals.
Micro-needles are too small to reach andstimulate the nerve endings, and hence causeno pain to the body.
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MICRO-NEEDLE
PATCH
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Smart Pill A MEMS device that can be implanted in the
human body.
Consists of
biosensors
Battery Control circuitry
Drug reservoirs
The biosensors sense the substance to be
measured, say insulin. Once this quantity falls below a certain amount
required by the body, the pill releases the drug.
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MEMSBIO-SENSORS
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Biological Sensors
Device that integrates a biological component
with an electronic component to yield a
measurable signal.
Biosensors, which come in a large variety of
sizes and shapes, are used to monitor changes
in environmental conditions.
They can measure acidity levels (pH), analytesand pressure in blood.
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TYPES OF BIO-SENSORS
Pressure Sensors
Temperature Sensors
UltraSound Sensors
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Challenges forMEMS medical
sensors Biocompatibility remains the biggest hurdle for
MEMS medical devices.
Life of the device.
Retrieving data out of the device.
Resist drifting along with the body fluids.
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ADVANTAGES OF MEMS
Small volume of reagent samples (like blood),required for analysis.
Low power consumption, hence lasts longer onthe same battery.
Less invasive, hence less painful.
Integration permits a large number of systems tobe built on a single chip.
Batch processing can lower costs significantly.
Existing IC technology can be used to makethese devices.
Silicon, used in most MEMS devices, interfereslesser with body tissues.
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CONCLUSION
In the next five years we will begin to see the
proliferation of MEMS technology into surgery
As surgical MEMS technology becomes more
mature and established, we will see theintegration of multiple sensors on surgical tools.
The result will be smart surgical tools which will
communicate with the surgeon, even turning
themselves off or resisting the surgeons
movements if they sense danger to the patient.
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REFERENCE
[1] K.J. Rebello, Applications of MEMS inSurgery,. Proceedings of the IEEE, Vol.92,
No.1, Jan., 2006.
[2] P. Dario, A. Menciassi, C. Stefanini, and D.Accoto, Miniaturization of biomedicalmicromachines, in Proc. 2nd Annu. Int.IEEE-EMBS Special Topic Conf.Microtechnology Medicine and Biology,2002, pp. 291296.
[3] D. Polla, A. Erdman, D. Peichel, R. Rizq,Y. Gao and D. Markus Precision
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THANK YOU