Embedded Files
The KangaArm
The KangaArm
The KangaArm–is a 3 Degree of Freedom, posable arm which can safely support critical tubing and the Bunnell jet ventilator accessory box during the skin-to-skin treatment process in the NICU.
The mechanical arm features a semi-permanent ventilator pole clamp, a locking bike-style revolute joint, vertical rotation locking joints and a two- tiered vibration isolating payload plate.
Performance
Performance
The need for a mechanical structure to hold a jet ventilator box is genuine and unaddressed in the marketplace. Consequently, doctors and nurses in NICUs across the country have resorted to makeshift platforms to prop up the box and facilitate skin-to-skin contact. Team 20 is dedicated to designing and manufacturing a solution specifically tailored to their needs.
Through survey style user feedback sessions with NICU staff at both Jacobs Medical Center and Sharp Mary Birch Hospital, we have collected vital information which has directly influenced our final design solution.
Final User Feedback Session
Final User Feedback Session
Our final prototype has proven more than satisfactory to our users. The consensus is that the KangaArm is easy to use, sturdy and aesthetically pleasing. A few of our users have said that there is no reason not to use the KangaArm when facilitating skin-to-skin care between parent and infant.
This is the best result we could have hoped for as our device has proven its utility to the NICU staff categorically.
Comparison Feedback between the KangaArm and the KangaMove
Comparison Feedback between the KangaArm and the KangaMove
As with the previous user feedback sessions, our users hold significant preference towards the KangaArm rather than the KangaMove
1st & 2nd User Feedback Sessions
1st & 2nd User Feedback Sessions
Our first prototype did not inspire much confidence as the ventilator pole clamp was unstable. Through the feedback recieved, the part was redesigned and improved, with the second round of the feedback session reflecting the improvements.
Comparison Feedback between the KangaArm and the KangaMove
Comparison Feedback between the KangaArm and the KangaMove
In general, our users prefer the KangaArm over the KangaMove as the former is much easier to use and much sturdier than the latter.
Individual Components
Individual Components
Semi- Permanent Ventilator Pole Clamp
Semi- Permanent Ventilator Pole Clamp
CAD model of Semi- Permanent Pole Clamp
CAD model of Semi- Permanent Pole Clamp
Exploded view of Semi- Permanent Pole Clamp
Exploded view of Semi- Permanent Pole Clamp
The Semi- Permanent Ventilator Pole Clamp is made to attach to the standard Bunnell Ventilator pole and supports the rest of the KangaArm components.
It features a 2 part aluminum body warped around the ventilator pole held together by two 1/4- 20 shoulder bolts and complementary hexes.
Bike-Style Revolute Joint
Bike-Style Revolute Joint
CAD model of Bike- Style Revolute Joint
CAD model of Bike- Style Revolute Joint
Exploded view of Bike-Style Revolute Joint
Exploded view of Bike-Style Revolute Joint
The Bike-Style Revolute Joint connects the ventilator clamp to the KangaArm. Its purpose is to provide s single rotation degree of freedom to the device.
It features a bike style manual locking mechanism as a safety feature so to prevent unwanted rotation of the arm.
Vertical Rotation Locking Joints
Vertical Rotation Locking Joints
Plastic, Square Arm Push Button Detent Hinge Joint
Plastic, Square Arm Push Button Detent Hinge Joint
Stainless Steel , Round Arm Push Button Detent Hinge Joint
Stainless Steel , Round Arm Push Button Detent Hinge Joint
The Vertical Rotation Locking Joints are located along the KangaArm, connecting the ventilator pole clamp, revolute joint and the accessory plate through stainless steel arm linkages.
The square arm joint is connects to the payload plate and the round arm joints are connects to the revolute joint through arm linkages.
They feature push buttons which allow for vertical rotation of the arm when engaged and locks in arm the position when disengaged.
Vibration- Isolating Accessory Plate
Vibration- Isolating Accessory Plate
CAD model of Vibration- Isolating Accessory Plate
CAD model of Vibration- Isolating Accessory Plate
Exploded view of Vibration- Isolating Accessory Plate
Exploded view of Vibration- Isolating Accessory Plate
The Vibration- Isolating Accessory plate is made to carry the jet ventilator box from a standard standard Bunnell Ventilator.
It features a two tiered configuration with the vibration damping mounts connecting the 3D printed top plate and the bottom acrylic plate. The plate has proven to have isolated 85% of vibrations generated from the ventilator box.
Final Design Poster & Presentation
Final Design Poster & Presentation
The poster can also be accessed on the poster page.
The final presentation and others can be accessed on the class presentations page.
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