Overview of Status of Analysis, Design, Fabrication, Tests, etc.
After proposing several designs to our sponsor, we have decided to eliminate two motorized degrees of freedom in favor of a simpler, more user-friendly system. Our new design solution now involves motorized vertical movement and manual movement in the X-Y plane with a pedal controlled locking mechanism.
Accomplishments from Previous Week
Following our meeting with our sponsor, we are moving closer to a finalized design solution. Our preliminary design solution builds upon one of our original concepts that uses a lead screw for vertical motion, however two of the motors that provide X and Y movement will be replaced by a pedal controlled brake system and manually adjusted movement. The team has also started building a prototype for our preliminary design solution.
Goals for Next Week (list names after each item). Use specific and measurable objectives.
MILESTONE: Finalized design solution will be decided upon and modeled in CAD. (Team)
Prototype demonstrating range of motion of system (Dan + Allan)
Research locking mechanisms and pedals for control (Team)
Present several user interface options to sponsor (Janak)
2 pedals vs. 1 rocking pedal for up/down motion
Constant velocity vs. variable velocity
Pedal control vs. hand control
Research or test vertical motion (piston, rack/pinion, lead/ball screw) (Team)
Motor analysis
Sponsor Comments from Last Meeting and Actions Taken to Address these Comments (indicate date of comments and if via email or in person)
X-Y plane movement can be changed from motorized to a manual system with a pedal controlled locking mechanism. Actions have been taken to design according to this concept. (4/9 in person)
Laryngoscopes were given to us by our sponsor to aid in the design process. We will be using them to design our laryngoscope clamp and the arm that will be holding the laryngoscope
When Dr. Weissbrod threads the fiber optic cable into the patient's nose, he starts with the laryngoscope in a bottom position and raises it. This will be taken into account when designing the vertical movement of the suspension system.
Medical devices are usually steel. This will be taken into consideration for purchasing and final design fabrication.
Overhead rail adapter (idea for separate product) will be researched later
Micro adjustments are small movements done along the horizontal axis. Research is being done to find a ball joint that allows for small movements.
Instructor Comments from Last Meeting and Actions Taken to Address these Comments (indicate date of comments and if via email or in person)
Give sponsor several design solutions to choose from. We provided the sponsor with design concepts and we were able to find a solution (4/5 in person)
Could possibly take two designs into 3rd or 4th week in order to keep options open
We proposed a 5 bar linkage as a possible design, but we learned that this is not easy to design and program.
Decided upon a final solution for the friday of the following week.
Create a simple prototype to show at the preliminary design presentations
Risks and Areas of Concern
A major risk that emerged from the new design was the magnetic field that could possibly interfere with other medical equipment
Another risk is the implementation of electromagnetic brakes which we are not familiar with
Create pedal controls that have indicators when there is user input to avoid accidental movements
Resources or Information Required but not Available
Video of complete procedure
Schedule
Describe upcoming milestone
Update Gantt chart.
Budget (list amount spent and amount remaining)
Nothing purchased
Progress on Report and Webpage
Webpage is being updated and password protection has been added.