Method for modeling a CPR Mask Shape by willlazdins37

Last crawled date: 3 years ago

Why share an approach to modeling the SHAPE of a CPR type mask using NURBS?
First, the modeling approach using NURBS is flexible in that anyone using the NURBS approach can create customized complex designs for CPR type masks or other assistive emergency response equipment.
1) This approach could be used to model many different CPR types masks
2) A single 3D printer can manufacture hundreds of masks at practically no cost.
3) The model can be printed at any scale from pediatric sizes to adult sizes
4) Can be used to conveniently model different types of animal rescue masks
Disclaimer:
This product describes the design and configuration of a CPR Type Mask. We are sharing this approach to a design process using Non-Uniform Rational B-Splines (NURBS) to model a complex shape. This model is not a medical device. This object has not been tested for use in resuscitation. We are sharing our design method, not suggesting that anyone 3D prints this design or attempt to use the design for resuscitation of anyone or any animal. No Really, We’re Not Kidding About This.
Second: What is CPR?
CardioPulmonary Resuscitation (CPR) is an emergency procedure performed when someone's heart stops beating. Conventional CPR is done by mouth-to-mouth breathing and chest compression.
Third: Why use a CPR mask?
A CPR Mask is an assistive device used to safely give rescue breaths during cardiac arrest or respiratory arrest. The CPR Mask protects the Rescuer from exposure to bodily fluids that may be expelled through the mouth of the CPR Recipient during the CPR process. Patients may expel vomit or blood while receiving chest compressions during the CPR process. A CPR Mask may decrease the transmission of infectious diseases. To use the CPR mask correctly, consider the following steps:

Place the mask over patients nose and mouth with the narrow part over the patient’s nose.


Press mask down on patient’s face creating an airtight seal.


Open the patient’s airway by tilting the patient’s head back and lifting the jaw forward/up.

Perform rescue breaths through the valve.
Fourth: What are NURBS? and why we used them
Most Approaches to 3D Modeling of complex objects use “primitives.” These include spheres, cubes, toroids, planes, and cylinders. Each of these “Primitive” shapes may represent objects with different properties. For example, solids, metaballs, or NURBS. NURBS is a mathematical model of 3D Geometry that can describe a simple 2-D shape to a complex 3-D surface or solid. We used NURBS because of its ability to retain its curvature so precisely due to surfaces being mathematically defined. When manipulating an object using NURBS Modeling, you keep a more organic shape compared to a polynomial surface, which uses planes rather than curves. NURBS modeling allows us to be meticulous and produce the exact shape that we desire.
Fifth: What is PLA and why use this to print an object?
Polylactic Acid (PLA) is a bioplastic derived from corn starch and sugar cane. PLA is cost-effective to produce from the abundance of materials used to create the bioplastic and the ability to produce material with already existing manufacturing equipment. This material is biodegradable (biodegrades in 6-12 months) and would not add to environmental pollutants in countries with restricted healthcare economies.
This idea was created by William Lazdins under the guidence and supervision of Dr. Richard Siderits, for Experimental Pathology
Resources:https://cpr.heart.org/AHAECC/CPRAndECC/AboutCPRFirstAid/WhatIsCPR/UCM_499896_What-is-CPR.jsphttps://www.redcross.org/take-a-class/cprhttps://www.youtube.com/watch?v=pfa59jb8JqUhttps://www.youtube.com/watch?v=U4crkJU-6vAhttps://www.youtube.com/watch?v=ikkbWUniK_4https://www.youtube.com/watch?v=DBQ7TakjX-ohttps://www.creativemechanisms.com/blog/learn-about-polylactic-acid-pla-prototypes