Endoscopy is a minimally invasive medical procedure that uses an endoscope to examine the interior of a body cavity or organ. An endoscope is a thin, flexible or rigid tube with a light source and lens that transmits images to a monitor. Modern endoscopes can be either fiber optic or video-based. A variety of tools can be passed through channels in the endoscope, including biopsy forceps, snares, and brushes. Endoscopy has evolved greatly since its origins in the early 19th century, and is now commonly used to diagnose and treat many gastrointestinal and respiratory conditions.
A C-arm is an imaging scanner intensifier.
The name derives from the C-shaped arm used to connect the x-ray source and x-ray detector to one another. C-arms have radiographic capabilities, though they are used primarily for fluoroscopic intraoperative imaging during surgical, orthopedic and emergency care procedures.
laparoscopy is recent advancing area in the field of general surgery. the identification and underlying mechanism of action of each laparoscopic instrument is necessary for their handling ans use.
HARMONIC SYNERGY® Blades use high-frequency mechanical vibration to simultaneously cut and coagulate at the same time, sealing vessels at lower temperatures than electrosurgery:
Precise: Minimal lateral thermal tissue damage for safer dissection near vital structures
Reliable: Seals and divides vessels <= 2mm, as well as lymphatics
Versatile: Cuts, coagulates and dissects, reducing instrument exchanges
A C-arm is an imaging scanner intensifier.
The name derives from the C-shaped arm used to connect the x-ray source and x-ray detector to one another. C-arms have radiographic capabilities, though they are used primarily for fluoroscopic intraoperative imaging during surgical, orthopedic and emergency care procedures.
laparoscopy is recent advancing area in the field of general surgery. the identification and underlying mechanism of action of each laparoscopic instrument is necessary for their handling ans use.
HARMONIC SYNERGY® Blades use high-frequency mechanical vibration to simultaneously cut and coagulate at the same time, sealing vessels at lower temperatures than electrosurgery:
Precise: Minimal lateral thermal tissue damage for safer dissection near vital structures
Reliable: Seals and divides vessels <= 2mm, as well as lymphatics
Versatile: Cuts, coagulates and dissects, reducing instrument exchanges
As we enter in the Modern day, we are witnessing dawn of the new trend in which closed body operating procedures are more often being performed through minimal access. This development is the consequence of vision and work of many dedicated individuals. They include early pioneers of endoscopy who planted the seed and lastly the current pioneers who pushed and expanded these frontiers to give rise the birth of modern laparoscopy. Therapeutic laparoscopic surgery was introduced into the surgical practice recently and within a short span of time, it has become established as defacto standard for the treatment of chronic cholelithiasis and many advanced laparoscopic procedures can be performed safely. Laparoscopic surgery, what we should witness today, may be the culmination of over a hundred years of painstaking efforts from the number of pioneers within the fields of optics, instrumentation and video laparoscopic camera. Few advances in medicine occur in isolation. The innate human curiosity to peer within the body cavities can be traced back to ancient times. However, due to primitive technology and crude instruments, several ambitions were not realized. It is probably safe to say that first laparoscopy would not have been performed had it not been for the efforts of many physicians in 1800s to develop endoscope. The device developed by Theodore Stein in mid 1880 contains all the aspects of the current endoscopic documentation system. There was a crude endoscope and a high intensity light source. Illumination was made by continuously feeding a magnesium wire into an ignition chamber utilizing a clockwise mechanism. Light from this combustion was reflected to the tube utilizing a mirror. Finally the look was focused on to some photographic plate through coupling optics.
This topic has been introduced in the new edition of Bailey & Love - 26th. This topic covers the types, uses & special uses as well as complications of Diathermy.
Breast biopsy is a medical test involving the removal of cells or tissues that has formed a lump, or a cyst, or is not normal.
http://docturs.com/dd/pg/groups/11280/breast-biopsy/
Pulseoximeter by Pandian M, Tutor, Dept of Physiology, DYPMCKOP, this ppt for...Pandian M
What Is Plethysmography?
When Is Plethysmography Ordered?
Types of Plethysmography
Procedure for a Plethysmography
Lung Plethysmography
Interpreting the Tests
calculation
operation
principle
uses
types
precautions
other concerns
Medical imaging is the technique and process of creating visual representations of the interior of a body for clinical analysis and medical intervention, as well as visual representation of the function of some organs or tissues (physiology).
This is to explian the basic Principle of Electrosurgical unit
It includes Principle
Block diagram,types various techniques,front and back panel of the machine,hazards,advantages etc.
This presentation of introduction of laparoscopic surgery made by Dr. R.K. Mishra Director and chief surgeon World Laparoscopy Hospital. Dr. Mishra in this presentation has explained present pas and future of laparoscopic surgery. Laparoscopy is a surgical procedure which uses a special surgical instrument called a laparoscope to look inside the body, or to perform certain operations. World Laparoscopy Hospital is the center of excellence for laparoscopic and da vinci robotic surgery training and considered as one of the best institute in the world. For more detail about laparoscopic surgery please visit: http://www.laparoscopyhospital.com
As we enter in the Modern day, we are witnessing dawn of the new trend in which closed body operating procedures are more often being performed through minimal access. This development is the consequence of vision and work of many dedicated individuals. They include early pioneers of endoscopy who planted the seed and lastly the current pioneers who pushed and expanded these frontiers to give rise the birth of modern laparoscopy. Therapeutic laparoscopic surgery was introduced into the surgical practice recently and within a short span of time, it has become established as defacto standard for the treatment of chronic cholelithiasis and many advanced laparoscopic procedures can be performed safely. Laparoscopic surgery, what we should witness today, may be the culmination of over a hundred years of painstaking efforts from the number of pioneers within the fields of optics, instrumentation and video laparoscopic camera. Few advances in medicine occur in isolation. The innate human curiosity to peer within the body cavities can be traced back to ancient times. However, due to primitive technology and crude instruments, several ambitions were not realized. It is probably safe to say that first laparoscopy would not have been performed had it not been for the efforts of many physicians in 1800s to develop endoscope. The device developed by Theodore Stein in mid 1880 contains all the aspects of the current endoscopic documentation system. There was a crude endoscope and a high intensity light source. Illumination was made by continuously feeding a magnesium wire into an ignition chamber utilizing a clockwise mechanism. Light from this combustion was reflected to the tube utilizing a mirror. Finally the look was focused on to some photographic plate through coupling optics.
This topic has been introduced in the new edition of Bailey & Love - 26th. This topic covers the types, uses & special uses as well as complications of Diathermy.
Breast biopsy is a medical test involving the removal of cells or tissues that has formed a lump, or a cyst, or is not normal.
http://docturs.com/dd/pg/groups/11280/breast-biopsy/
Pulseoximeter by Pandian M, Tutor, Dept of Physiology, DYPMCKOP, this ppt for...Pandian M
What Is Plethysmography?
When Is Plethysmography Ordered?
Types of Plethysmography
Procedure for a Plethysmography
Lung Plethysmography
Interpreting the Tests
calculation
operation
principle
uses
types
precautions
other concerns
Medical imaging is the technique and process of creating visual representations of the interior of a body for clinical analysis and medical intervention, as well as visual representation of the function of some organs or tissues (physiology).
This is to explian the basic Principle of Electrosurgical unit
It includes Principle
Block diagram,types various techniques,front and back panel of the machine,hazards,advantages etc.
This presentation of introduction of laparoscopic surgery made by Dr. R.K. Mishra Director and chief surgeon World Laparoscopy Hospital. Dr. Mishra in this presentation has explained present pas and future of laparoscopic surgery. Laparoscopy is a surgical procedure which uses a special surgical instrument called a laparoscope to look inside the body, or to perform certain operations. World Laparoscopy Hospital is the center of excellence for laparoscopic and da vinci robotic surgery training and considered as one of the best institute in the world. For more detail about laparoscopic surgery please visit: http://www.laparoscopyhospital.com
Laparoscopy is an operation performed in the abdomen or pelvic area using small incisions, often less than 1.5 cm, with the assistance of a Laparoscopic camera, typically for gallbladder, colon, kidney, and other procedures. Before, if an operation had to be conducted in the belly, doctors had to cut open the area, hence the name laparotomy.
. Introduction Biomicroscope derives its name from the fact that it enables the practitioner to observe the living tissue of eye under magnification. It not only provides magnified view of every part of eye but also allows quantitative measurements and photography of every part for documentation.
3. • The lamp facilitates an examination which looks at anterior segment, or frontal structures, of the human eye, which includes the –Eyelid –Cornea –Sclera –Conjunctiva –Iris –Aqueous –Natural crystalline lens and –Anterior vitreous.
4. Important historical landmarks De Wecker 1863 devised a portable ophthalmomicroscope . Albert and Greenough 1891,developed a binocular microscope which provided stereoscopic view. Gullstrand ,1911 introduced the illumination system which had for the first time a slit diapharm in it Therefore Gullstrand is credited with the invention of slit lamp.
Pill camera is an application of nanotechnology used in medicine to diagnose the disease particularly the small intestine and it is an alternative to endoscopy.
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Overview of the fundamental roles in Hydropower generation and the components involved in wider Electrical Engineering.
This paper presents the design and construction of hydroelectric dams from the hydrologist’s survey of the valley before construction, all aspects and involved disciplines, fluid dynamics, structural engineering, generation and mains frequency regulation to the very transmission of power through the network in the United Kingdom.
Author: Robbie Edward Sayers
Collaborators and co editors: Charlie Sims and Connor Healey.
(C) 2024 Robbie E. Sayers
About
Indigenized remote control interface card suitable for MAFI system CCR equipment. Compatible for IDM8000 CCR. Backplane mounted serial and TCP/Ethernet communication module for CCR remote access. IDM 8000 CCR remote control on serial and TCP protocol.
• Remote control: Parallel or serial interface.
• Compatible with MAFI CCR system.
• Compatible with IDM8000 CCR.
• Compatible with Backplane mount serial communication.
• Compatible with commercial and Defence aviation CCR system.
• Remote control system for accessing CCR and allied system over serial or TCP.
• Indigenized local Support/presence in India.
• Easy in configuration using DIP switches.
Technical Specifications
Indigenized remote control interface card suitable for MAFI system CCR equipment. Compatible for IDM8000 CCR. Backplane mounted serial and TCP/Ethernet communication module for CCR remote access. IDM 8000 CCR remote control on serial and TCP protocol.
Key Features
Indigenized remote control interface card suitable for MAFI system CCR equipment. Compatible for IDM8000 CCR. Backplane mounted serial and TCP/Ethernet communication module for CCR remote access. IDM 8000 CCR remote control on serial and TCP protocol.
• Remote control: Parallel or serial interface
• Compatible with MAFI CCR system
• Copatiable with IDM8000 CCR
• Compatible with Backplane mount serial communication.
• Compatible with commercial and Defence aviation CCR system.
• Remote control system for accessing CCR and allied system over serial or TCP.
• Indigenized local Support/presence in India.
Application
• Remote control: Parallel or serial interface.
• Compatible with MAFI CCR system.
• Compatible with IDM8000 CCR.
• Compatible with Backplane mount serial communication.
• Compatible with commercial and Defence aviation CCR system.
• Remote control system for accessing CCR and allied system over serial or TCP.
• Indigenized local Support/presence in India.
• Easy in configuration using DIP switches.
CFD Simulation of By-pass Flow in a HRSG module by R&R Consult.pptxR&R Consult
CFD analysis is incredibly effective at solving mysteries and improving the performance of complex systems!
Here's a great example: At a large natural gas-fired power plant, where they use waste heat to generate steam and energy, they were puzzled that their boiler wasn't producing as much steam as expected.
R&R and Tetra Engineering Group Inc. were asked to solve the issue with reduced steam production.
An inspection had shown that a significant amount of hot flue gas was bypassing the boiler tubes, where the heat was supposed to be transferred.
R&R Consult conducted a CFD analysis, which revealed that 6.3% of the flue gas was bypassing the boiler tubes without transferring heat. The analysis also showed that the flue gas was instead being directed along the sides of the boiler and between the modules that were supposed to capture the heat. This was the cause of the reduced performance.
Based on our results, Tetra Engineering installed covering plates to reduce the bypass flow. This improved the boiler's performance and increased electricity production.
It is always satisfying when we can help solve complex challenges like this. Do your systems also need a check-up or optimization? Give us a call!
Work done in cooperation with James Malloy and David Moelling from Tetra Engineering.
More examples of our work https://www.r-r-consult.dk/en/cases-en/
RAT: Retrieval Augmented Thoughts Elicit Context-Aware Reasoning in Long-Hori...
Lec 1 Medical Equipment Endoscopes
1.
2. What is Endoscopy?
A medical procedure used for visual examination of
the interior of a body cavity or a hollow organ such as
the colon, bladder, or stomach.
3. What is Endoscopy?
Endoscopy is a minimally
invasive diagnostic medical
procedure used to evaluate
interior surface of an organ.
Endoscopes may have rigid
or flexible tube inserted into
body.
Video endoscopy is
performed by attaching a
microchip camera at the
insertion tube, setup image
is viewed on a video monitor.
4. History of Endoscopy
The first real endoscope was developed by Phillip Bozzini in 1805.
He devised a tin tube illuminated by a candle to examine the
urethra, the bladder and vagina.
Adolf Kussmaul in 1868 used a straight rigid metal tube to perform
the first gastroscopy.
Josef Leiter in 1886 was the first to use the electric light bulb in a
cystoscope and subsequent rigid instruments with distal bulbs
were used until the 1960s to examine the oesophagus.
In 1932, Wolf and Schindler constructed a semiflexible instrument
to be the first practical gastroscope.
In 1957, Basil Hirschowitz introduced his prototype fiberscope as a
flexible instrument utilizing fiberoptics.
9. History of Endoscopy
The modern era of endoscopy began with the
development of fiber optic instruments in the 1960s.
For most purposes these are being replaced by video
endoscopes in the 1990s.
11. Functions of Endoscopes
View internal body parts using lighting system,
camera/video, and use of medical instruments to
remove unwanted cancers
Enters through opening in body
Confirm diagnosis
Biopsies/sampling
Surgery to remove
unwanted cancers
Lasts 15 to 60 minutes
12. Endoscopy Tools
Tube
Rigid or Flexible
Lighting System
To illuminate the organ under inspection.
The light source is outside the body.
Light is typically directed via an optical fiber system.
13. Endoscopy Tools
Lens System
The objective lens is placed at the tip of the insertion tube. It collects
light and brings it to focus for creating an image.
A relay lens system is used in rigid endoscopes to transmit the image
from the objective lens to the viewer through the eyepiece:
It is a group of lenses that operate by producing intermediate planes
of focus, thus extend the length of the optical tube.
A bundle of fiberoptics is used instead in flexible fiberscopes.
relay lens system
14. Endoscopy Tools
An eyepiece.
An eyepiece consists of several
"lens elements" in a housing.
The eyepiece is placed near the focal point of
the objective lens to magnify the image.
The amount of magnification depends on
the focal length of the eyepiece.
Camera
Modern videoscopes have no eyepiece.
A camera captures the image to be displayed
on a screen.
Probe or Suction Device
15. Fiberoptic Endoscopes
These are based on optical fiber bundles.
The viewing bundle of a standard
fiberoptic endoscope is 2–3 mm in
diameter and contains 20, 000–40, 000
fine glass fibers, each close to 10 μm in
diameter.
Light focused onto the face of each fiber
is transmitted by repeated total internal
reflections.
Each individual glass fiber is coated with
glass of a lower optical density to prevent
leakage of light from within the fiber,
since the coating does not transmit light.
16. Fiberoptic Endoscopes
Components:
Flexible endoscopes consist of a control head and a
flexible tube(shaft) with a deflectable/bending tip.
The head is connected to a light source via an
‘umbilical’ cord, through which other tubes pass
transmitting air, water and suction, etc.
The biopsy port is used for the passage of diagnostic
tools (e.g. biopsy forceps) and therapeutic devices.
18. Instrument channels
Standard instruments have Air/Water
and Biopsy/Suction channels.
The Biopsy/Suction channel is usually
2–4 mm in diameter.
It allows the passage of fine flexible
accessories (e.g. biopsy forceps, cytology
brushes, diathermy snares) from the
“biopsy port” on the endoscope control
head through the shaft and into the field
of view.
19. Instrument channels
The Biopsy/Suction channel is also used for suction in single-
channel instruments;
an external suction pump is connected to the ‘umbilical’ cord of
the instrument near the light source and suction is diverted into the
suction channel by pressing the suction valve.
Twin-channel endoscopes exist for specialized therapeutic
applications. These have 2 channels for suction and appliances.
The air/water channel transmits air to distend the organ being
examined;
Air is supplied from a pump near the light source and is
controlled by the “air/water” valve.
The air system also pressurizes the water bottle so that a
water jet instead can be sprayed across the distal/objective
lens to clean it.
20. Instrument channels
With standard endoscopes, this can be done with
a syringe, manual bulb or a pulsatile electric
pump, with a suitable nozzle through the biopsy
port.
Some therapeutic instruments, as colonoscopes,
have a separate proximal opening for the water
channel or ‘forward-facing flushing channel’
to allow high-pressure flushing with a syringe.
Flushing fluids may be necessary to provide optimal views of
lesions, particularly in the presence of food residue or acute
bleeding.
23. Illumination
This is provided from an external high-intensity source. Light is
conveyed by bundles of glass fibers via the umbilical cord and
instrument shaft to the instrument tip. Thus, this system
removes the light bulb from the instrument tip, preventing heat
build up at the instrument tip.
xenon arc (300 W)
halogen-filled tungsten filament lamps (150 W)
Light is focused by a parabolic mirror onto the face of the
bundle, and the transmitted intensity is controlled by filters
and/or a mechanical diaphragm.
In some systems the light output can be manipulated to select
specific wavelengths (Narrow Band Imaging Olympus).
24. Instrument/Insertion tip
Control of the instrument or bending tip is performed
using the angling controls in the control head.
Two angling wheels/knobs (for up/down and right/left
movement) incorporate a friction braking system, so
that the tip can be fixed temporarily in any desired
position.
26. Instrument/Insertion tip
Light Guide lens(BB)
For light transmission to the organ
under inspection.
Image Guide lens(AA)
or objective lens
Imaging is the primary function of
the endoscope. An image is
captured here and transferred
though the optical fibers directly
behind the lens system.
28. Instrument/Insertion tip
Instruments may differ in length, size,
stiffness, sophistication and distal lens
orientation acc. to application.
Most GI endoscopy is performed with
instruments providing direct forward vision,
via a 90–130° wide-angle lens.
However, there are circumstances in which it
is preferable to view laterally.
29. Video-endoscopes
A CCD microchip camera is mounted
at the tip of the insertion tube as the
image sensing device.
The video image is then relayed as
electric signal from the distal tip and
focusable lens assembly back to the
display via internal wiring.
A CCD chip is an array of 33,000–100,000 individual photocells
(known as picture elements or pixels) receiving light photons
reflected back and producing electrons in proportion to the light
received.
In common with all other television systems, the individual
receptors of the CCD respond only to degrees of light and dark,
and not to color.
30. Video-endoscopes, Cont’d
There are basically two types of imaging systems for video
endoscopes: the frame sequential system and the
synchronous system.
1) The frame sequential system
These instruments have a black and white chip at the tip. All
colours seen by the human eye can be generated by a
combination of red (R), green (G) and blue (B).
The light used to illuminate the image is not continuous, but
pulsed or strobed. Before entering the patient, light is passed
through a rotating wheel with red, green and blue filters.
Because it is rotating too fast for the eye to see (20-30 revs/sec)
these red, blue and green images combine to form a
replication of the original image.
32. Video-endoscopes, Cont’d
The sequential primary colour images
are temporarily cached in the memory
of the processor and fed out
sequentially to the red/blue/green
electron guns of the TV monitor for
display.
A disadvantage of this system is that
during movement there can appear to
be a strobing effect which can be
annoying for the viewer.
An advantage of this system is that all
CCD pixels contribute in each capture,
leading to a high-resolution image.
33. Video-endoscopes, Cont’d
2) The synchronous system
has mosaic color filters attached to the surface of the CCD chip,
making the pixels under a particular strip respond only to light of
that particular colour.
Thus, it instantly generates a colour representation of the image.
The color filters most generally used are yellow (Y), cyan (Cy), magenta
(Mg), and green (G).
Thus, there is no strobing effect (no mechanical colour wheel).
Furthermore, since image capture is faster there is less blurring during
movement.
A disadvantage is that since each pixel in the chip is colour-specific
(yellow, magenta, cyan and green), the resolution of the image is less
than that possible with frame sequential imaging.
35. Accessories
Tissue-sampling devices
Tissue sampling is a crucial part of endoscopy.
Biopsy forceps consist of a pair of sharpened cups, a spiral
metal cable and a control handle. The maximum diameter is
limited by the size of the operating channel.
Cytology brushes are used for the collection of cells and the
detection of malignant neoplasms.
They have a covering plastic sleeve to
protect the specimen during withdrawal.
36. Accessories, Cont’d
Suction traps
Suction traps may be fitted into the suction line to allow the
collection of fluid samples for microbiology, chemistry and
cytology.
Used in cases as:
collecting samples of sputum during bronchial aspiration,
taking samples of intestinal secretions and bile.
Solid specimens can also be retrieved
using a filtered suction trap.