1. Abstract Client Expectations References Acknowledgments Richard Bamberg, Dustin Gardner, Matt Kudek, Chelsea Wanta Advisor: Willis Tompkins, Ph.D. Client: Robert Hardie, DVM Future Work Current Devices Final Design A self-contained, maneuverable endoscopic video camera system is crucial for the enhancement of laparoscopic surgery procedures. This camera will be set in place by a magnetic couple through insertion via a trocar into a laparoscopic port. The magnetic couple will then maneuver the device internally to view any area of interest. By means of developing such a device, periodic post-operative viewing may be facilitated for a veterinarian (or doctor) with the benefit of fewer invasive procedures. Considerations that are essential to the performance and reliability of such a device include visual quality, maneuverability, power sources, and consistency of the magnetic couple installation. The goal for this semester was to build the prototype of a large scale model for a self-contained, maneuverable endoscopic camera that includes a light source and power source with uncompromised visual quality and feedback.. Reduce dimensions of device to 1/3 size of current prototype Decrease the amount of bulky components contained within the bubble camera Include a self-focusing camera system Create a self-cleansing system in vivo Improve the maneuverability of the device for surfaces of higher friction and lower stiffness Install cooling system within bubble camera to avoid overheating of system Devise a gas sealing system for the dome Usability Testing: Insertion and Extraction trials (Reliability) Maneuverability testing in vivo (Accuracy) Electronics testing (Imaging/Power source) Sterilization testing (Safety Protocol) The final design is a large scale prototype of the video camera system we are creating for the UW Veterinary Hospital. It consists of a plastic dome camera, a magnetically coupled steering device, and a receiver which transmits streaming video from the camera onto a television. Endoscopic surgery image.. Rigid endoscope image.. PillCam™ image.. Magnetic Coupling:. Dome Camera: Background Client Requirements: The device must: Be completely gas sterilizable Be utilized during / following surgical procedure Be easily withdrawn from patient Contain light and power sources Be built within a $500 budget Transmit data wirelessly Capture images comparable to current laparoscopes Design Requirements: The device must: Power a video camera and LEDs with two 9-Volt batteries Not exceed a current of 10 mA per LED Have a magnetic coupling system which can support the weight of the camera and maneuver it around a target area. Contain no sharp or rough edges Costs Material / ProductPrice Wireless Video Camera System $259.90 Plastic Dome$13.00 Magnets$15.99 Circuitry Components$17.90 Total$306.79 Endoscopic Surgery: Minimally invasive surgery Performed through small incisions Uses rigid endoscope and long-handled instruments Rigid endoscopes: Series of stacked lenses within a rod Contain optical fibers for light transmission Often used in conjunction with camera system Limitations: Cannot evaluate conditions post-operatively without additional trauma Need anesthesia to insert and manipulate endoscope Fixed position limits field of view Currently, few devices which allow for non-invasive post-operative viewing of the abdominal cavity exist on the market. Below are the most pertinent devices available, but these devices do not accomplish the task of being a self-contained and steerable video camera system: Pill Cam™ (ESO, SB, COLON) Steerable segmented endoscope Fiber optic endoscope Wireless endoscopic camera Deflectable endoscope Problem Statement Statement: Our goal is to design a self-contained, maneuverable endoscopic video camera system for laparoscopic procedures at the small animals clinic within the UW- Veterinary Hospital. Final Prototype: Dr. Hardie for his support and assistance Professor Tompkins for his design critiques Amit Nimunkar for his advice This device will: Be maintained internally for periodic post-operative viewing Allow for deft orientation without compromising visual capacity Reduce invasive procedures (1 less port) Be easy to insert and remove from the patient Have all electrical components sealed off from the environment Above: Scope with Neodymium Magnetic Couple, frame constructed out of HDPE. Above: Magnetic receiver-base for Bubble Camera with Neodymium Magnetic Couple. This switches LEDs on and off. Above: Fully loaded Dome Camera with 9V Batteries, Switch and LEDs. Above: Final Prototype; Dome Camera magnetized to Scope between ½’’ thick HDPE Sheet. Left: Spy Camera with Signal Transponder. This will be connected to a television screen and display live video of visual feedback received by the camera.