Zenith Systems contributes to award winning product for Laerdal Medical
Laerdal Medical are a major developer and manufacturer of medical equipment and training products (‘CPR Annie’ being maybe their most famous product). Their main office is based in Stavanger, Norway, and they have other offices all over the globe. Through their engineering process, Siemens NX and Teamcenter plays an important role to develop their products that helps save lives.
Our consultant Magnus Skogsfjord has ongoing engagements with Laerdal Medical in delivering high quality engineered designs and customizations to their workflow.
Last year, Magnus participated in a product development project for the non-profit sister company Laerdal Global Health. The task was to contribute in the development of MamaBirthie: an affordable birthing simulator for demonstrations and skill training. MamaBirthie was awarded the 2017 DOGA (Design and Architecture Norway) honorable mark for “an innovative and smart solution which helps mothers and children to survive in countries with weak health systems”.
If you are interested in reading more about the product, please visit https://www.laerdal.com/laerdalglobalhealth/MamaBirthie
The project specifications
This assignment was done in tight collaboration with industrial designer Ole Terje Østrem and design engineer Olav Storli Turtum, where Magnus’ role was to design a believable and organic pelvis shape. It also needed to be produced in a robust and cost effective way.
In order to make the pelvis mold-able, it had to be split into two inner constructional segments and two outer aesthetic segments that should resemble a pelvis. In other words, the constraints for the projects were to use existing curves and surfaces on the inner structural design (depicted) as a canvas to stay within, and use this area to design a believable pelvis shape.
Together with a physical full scaled model of a pelvis, a 3D scan of an actual pelvis was given as reference. Magnus’ first step in the design process was to utilize NX Reverse engineering tools to patch, repair and smooth out the scan to utilize the geometry as a visual template. By having a 3D model of an actual pelvis within the software, NX Realize Shape, or subdivision modeling (3D shape exploration), was utilized to explore potential designs and design features, as well as getting to know the pelvis shape.
See pictures below for the three stages
After the shape exploration, the engineering data was designed and modeled up in NX, using both some elements from the shape exploration as well as the organic 3D scanned shapes. This together with iterative feedback from Ole Terje and Olav gave the final push on the product shape, providing a geometry which was ready to be refined and prepared for manufacturing and assembly.
The end product shows an inner constructional element, giving support and robustness during demonstrations of a simulated birth, while the outer shell provides the appearance of an actual pelvis.
“The really cool thing about this design is that we were able to make it feel like a massive bone construction even though it only consists of 3mm thick walls”, industrial designer Ole Terje Østrem says.
“Magnus Skogsfjord was invaluable in the development of a sound modeling methodology. The learnings from this project have gone directly into the modeling work of other anatomical parts of similar complexity.”
-Olav Storli Turtum, Design Engineer Laerdal Medical