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Trocascope XC2000 ver. 2.0. Brought to you by: Smooth Operation Chris Kitt, Brenda Marcum, Jacob Oliver, Michael Roth, and Andrew Yuan. Laparoscopy Background. Minimally invasive abdominal surgery Multiple ports for tools – separate one for laparoscope. Current Laparoscopic Process.

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trocascope xc2000 ver 2 0

Trocascope XC2000 ver. 2.0

Brought to you by:

Smooth Operation

Chris Kitt, Brenda Marcum, Jacob Oliver,

Michael Roth, and Andrew Yuan

laparoscopy background
Laparoscopy Background
  • Minimally invasive abdominal surgery
  • Multiple ports for tools – separate one for laparoscope

Current Laparoscopic Process

trocascope xc2000 ver 2 03
Trocascope XC2000 ver. 2.0
  • Eliminate one port by incorporating the camera onto the tool port
  • More convenient for surgical team - fewer hands required and viewable screen
  • Less traumatic for patient
project goals and objectives
Project Goals and Objectives
  • Combine current laparoscope with current surgical instrument to eliminate one port
  • Minimize camera module size, while maintaining speed and resolution
  • High resolution image displayed on LCD panel
  • Minimal wires – hopefully completely wireless and battery powered
  • Incorporate data storage device for later viewing
low objectives
Low Objectives
  • 10 mm max diameter for camera module
  • 640x480 resolution
  • 30 fps
  • LCD screen
  • LED lighting with imager
  • All wired connections
  • AC power
mid level objectives
Mid Level Objectives
  • Battery powered – supplement with AC (2-2.5 hr run time)
  • 6 mm max diameter of camera module
  • Higher resolution
  • Wireless
  • Stream video data to external monitor
  • Screen shot capability
  • SD onboard storage
  • Enable touch screen features
high level objectives
High Level Objectives
  • Multi-camera interface – split screen
  • Motorized camera module
  • Time display
  • Audio features
  • Wireless transmission to external monitor
  • Foot pedal
  • 4 mm maximum diameter of camera module
  • Wireless storage to external device
block diagram

Microcontroller w/ISI and LCD controller

Camera

(0V7690)

VGA LCD Display

LED(s)

SD Card

Block Diagram

Rechargeable Battery

Battery Charger Controller

Top View

microcontroller
Microcontroller

ATMEL

AT32AP7000

32bit AVR

camera

Microcontroller w/ISI and LCD controller

Camera

(0V7690)

Camera
  • Connected via SCCB (I2C) and 8 parallel data lines
  • Camera takes 640x480 @ 30fps and sends it to the Image sensor interface on the microcontroller.
  • Microcontroller controls imager via SCCB connection.
led s

Microcontroller w/ISI and LCD controller

LED(s)

LED(s)
  • Connected via GPIO, possibly buffered with MOSFET or BJT to supply additional power
  • Each LED is connected through a buffer to a general I/O pin on the Microcontroller.
    • Allows touch screen to control LED through microcontroller, ideal for saving power and adjustable brightness.
  • LED will be selected for maximum efficiency and brightness. Don’t want to burn patient and want lots of illumination.
slide12

Microcontroller w/ISI and LCD controller

VGA LCD Display

LCD
  • Connected via Microcontroller LCD interface.
  • Microcontroller takes data from imager and displays it on the LCD in VGA format.
  • Microcontroller takes button presses from LCD and performs desired operations, ie toggling LEDs, screenshots, etc
  • Utilizes RGB parallel input with 18 bits of color
  • VGA standards (480x640 @ 30 fps)
external storage

Microcontroller w/ISI and LCD controller

SD Card

External Storage
  • SD Card viable option for video storage and retrieval
  • Uses standard SPI interface to communicate
  • Uses FAT32 storage system
  • SD interface built into processor
  • Easy to find documentation on SD interface
risks concerns
Risks/Concerns
  • Microprocessor Options
    • BGA vs. Quad Flatpack
    • Smaller/less features vs. timing issues
    • Other alternatives available
  • Long BGA layout turn-around time
  • Unfamiliar Technology
    • PCB layout
    • Eval. Board coding vs. prelim. Demo board coding
alternative 1
Alternative #1

Top View

LCD controller (Epson S1D13513)

Camera

(0V7690)

Microcontroller w/ISI (OV530-B49)

VGA LCD Display

LED(s)

SD Card

alternative 2
Alternative #2

Top View

Image Sensor Controller (Atmel 32-bit Image Sensor interface)

Microcontroller

W/LCD controller

(NXP LPC2158 ARM7)

VGA LCD Display

Camera

(0V7690)

SD Card

LED(s)

alternative 3
Alternative #3

Top View

Image Sensor Controller (Atmel 32-bit Image Sensor interface)

LCD controller (Epson S1D13513)

Microcontroller

Camera

(0V7690)

VGA LCD Display

SD Card

LED(s)

risks concerns cont d
Risks/Concerns Cont’d
  • Schedule Uncertainty
    • Enough time to learn how to store data, battery operable, etc.
    • Prototype completed by the beginning of March?
  • Component Risks
    • Expensive Eval. Board
    • Sensor frame rate and resolution vs. size
  • Questionable Feasibility
    • Low level objectives seem obtainable
    • Can we make our mid/high level objectives?
market
Market
  • Over 2 million laparoscopic surgeries performed each year
  • New laparoscopic surgeries are being introduced as technology improves
  • 6 million Trocar used each year
laparoscopic surgery
Laparoscopic Surgery
  • Patient’s Point of View
    • Cheaper
      • $1,000 less than open surgery
    • Quicker Recovery
      • Hospital stay is 1/4th the time of open surgery
    • Post operative pain is less
    • Reduced infection rate
laparoscopic surgery23
Laparoscopic Surgery
  • Surgeon’s Point of View
    • Longer operative times
    • Expensive equipment
    • Requires extra surgical training
    • More complicated surgery
      • 1 in 2000 patients suffer vascular injuries
      • 17% of vascular injuries are fatal
      • Average surgical malpractice lawsuit = $222,285
our goal
Our Goal
  • Make laparoscopic surgery more appealing to surgeon
    • Efficient
      • Faster Operative Times
    • Easier
      • Fewer mistakes
      • Less Surgical training
    • Safer
      • Less Crowded Operating Room
environmental impact
Environmental Impact
  • Biomedical Waste
    • 6 Million Trocar used and disposed each year
    • Removing 1 Trocar per surgery reduces number by 1-2 million
  • Potential for Reusability is important
sustainability
Sustainability
  • Part Availability
    • All parts can be obtained from variety of different vendors
  • Maintenance
    • Trocar are eventually disposed
    • Data storage device
  • Support
    • Training
    • Setting up data storage
manufacturability
Manufacturability
  • Component tolerances may have effect on image quality
  • Testing
    • Development Board
    • Processor on a simple PCB
  • Regulations
    • FDA
    • FCC
safety
Safety
  • Laparoscopic Surgery
    • Dangerous Instruments
    • Complex Procedure
    • Crowded workspace
    • Exposure to patient blood
  • Our Goal
    • Reduce Complexity
    • Less Crowded
impact on society
Impact on Society
  • Safer, more efficient surgeries
  • Reduce number of assistants required for surgery
  • Potential for cheaper surgery
  • 3rd world surgery potential