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CONTENTS
Introduction to Capsule Camera
Description
Components of Capsule Camera
Inside a Capsule CameraUses
Circuit Block diagram of Transmitter
Advantages
Drawbacks & Overcomes
Endoscope Procedure
bidiretional Wireless Endoscopy
Circuit Block diagram of receiver
Conclusion
Receiver
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Introduction to Capsule Camera
.Imagine a vitamin pill-sized camera that could travel throughyour body taking pictures, helping diagnose a problem which
doctor previously would have found only through surgery.
.
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Description
The device, called the given Diagnostic Imaging System,
comes in capsule form and contains a camera, lights, transmitter
and batteries.
The latest pill camera is sized at 26*11 mm and is capable of
transmitting 50,000 color images during its traversal through the
digestive system of patient.
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Components OfCapsule camera
LIGHTING
DEVICE
LENS CMOS
IMAGE SENSOR
TRANSMITTING
ELECTRODE
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OPTICAL DOME
LENSHOLDER
LENS
ILLUMINATING LEDS CMOS IMAGE SENSORBATTERY
ASIC
TRANSMITTER
ANTENNA
5 7
Inside a Capsule Camera
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1.Optical Dome
This shape results in easy orientation of the capsule axis along the
central axis of small intestine and so helps propel the capsule forward
easily.
The Optical Domecontains the Light Receiving Window.
2.Lens Holder
The Lens Holderis that part of the capsule which accommodatesthe lens. The lens is tightly fixed to the holder so that it doesnt get
dislocated anytime.
Dimensions:Height: 11mm
Length: 26mm
Weight: 3.7gm
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3.Lens
The Lens is an integral component of the capsule.
It is arranged behind the Light Receiving Window.
4.Illuminating LEDs
Around the Lens & CMOS Image Sensor, four LEDs (Light Emitting
Diodes) are present. These plural lighting devices are arranged in donut
shape.
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5.CMOS Image Sensor
CMOS(Complementary Metal Oxide Semiconductor) Image
Sensoris the most important part of the capsule. It is highly sensitive
and produces very high quality images.
It has 140 field of view and can detect objects as small as possible.
6.Battery
Battery used in the capsule is button shaped and are two in number
as shown. The batteries are arranged together just behind the CMOS
Image Sensor.
Silver Oxide primary batteries are used (Zinc/Alkaline
Electrolyte/Silver Oxide). Such a battery has a even discharge voltage,
disposable and doesnt cause harm to the body.
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DATA
RECORDER
COMPUTER
Movement Of Capsule Through The
Digestive System
Data Acquisition & Storage Of Data On
Computer
Produces two images per
second, approximately 2,600
high quality images.
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NSAID Ulceration
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Blood in Terminal Ileum
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Small Bowel Ulcer
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Circuit Block diagram of Transmitter
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Advantages
Painless, no side affects or complications.
Miniature size, so can move easily through the digestive system.
Accurate, precise and effective.
Images taken are of very high quality which are sent almostinstantaneously to the data recorder for storage.
Made of bio-compatible material, doesnt cause any harm to the body.
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Drawbacks & Overcomes
.
1.Patients with gastrointestinal structures or narrowing are not
good candidates for this procedure due to the risk of obstruction.
The first drawback is overcome using another product manufactured
with the help of nanotechnology which is the rice- grain sized motor.
2. The Pill will get stucked if there is a partial obstruction in
the small intestine.
3. Impossible to control Camera behavior.
These two drawbacks can be overcome using a
bi-directional telemetry Camera.
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bidirectional Wireless Endoscopy
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Circuit Block diagram of Receiver
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EXTERNAL CONTROL UNIT:
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During the Procedure
After removing the shirt, a patient will have adhesive patches
connected to the abdomen with a special recorder waist
attachment. This allows image transmission for recording and
storing the data. Next, the patient swallows the capsule with
small amound of water.
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After you swallow the capsuleAfter you swallow the capsule you must not eat or drink for 2
hours. Two hours after you swallowed the capsule, you may have
about 8 to12 ounces of clear like water liquids, for example
Sprite, 7-Up, or water.
Four hours after you swallow the capsule, you may have a light
lunch. This may consist of a small sandwich or a little soup and 8
to12 ounces of any fluids, including coffee or milk. You may alsotake medicine at this time. After the exam is complete, you can
return to your normal diet.
Avoid any electromagnetic fields such as an MRI machine or
amateur (ham) radio device. Police or emergency radios may alsocause problems with the capsule signal.
The Data Recorder is a small computer and is very fragile. You
cannot bang the device or get it wet.
Avoid bending or stooping to help maintain good contact of the
sensors.
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Conclusion
The Given Endoscopy capsule is a pioneering concept for Medical
Technology of the 21st century.
The endoscopy system is the first of its kind to be able to provide non-
invasive imaging of the entire small intestine.
It has revolutionized the field of diagnostic imaging to a great extent
and has proved to be of great help to physicians all over the world.
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