Ergonomic CAD Design for Medical Breathalyzer
Budget: ₹1,500 – ₹12,500 INR
CAD Design Engineer for Raspberry Pi-Based Breathalyzer Device (Urgent )
Project Overview
OraLens Healthcare is developing an innovative portable breathalyzer device for healthcare applications and seeks an experienced CAD design engineer to create a professional, ergonomic enclosure that integrates multiple electronic components into a cohesive, user-friendly medical device. This project represents a critical step in transitioning from breadboard prototype to a production-ready handheld device.
As a healthcare technology company specializing in diagnostic solutions, we require a design that meets both functional engineering requirements and medical-grade aesthetic standards. The successful candidate will work directly with our CTO and engineering team to ensure the design meets our technical specifications while maintaining manufacturability and user experience standards.
Component Integration Requirements
The enclosure must precisely integrate the following specified components, with datasheets and detailed specifications provided upon project commencement:
Core Electronics:
Raspberry Pi Zero 2 W: Primary computing unit requiring secure mounting with screw bosses, thermal management considerations, and optional SD card access
Seeed Studio LiPo Rider Plus: Power management board necessitating precise cutouts for USB-C charging port and USB-A output, with consideration for the module's height profile
1500mAh PCM Protected Micro Li-Po Battery: Dedicated battery compartment with strain relief and secure retention mechanism
5MP Raspberry Pi Camera Module: Critical alignment requirements with rigid mounting for consistent focal distance and optical path
Two Push Buttons: User interface elements requiring ergonomic placement for intuitive thumb or index finger operation
A Gas sensor: SC05-H₂S
Critical Engineering Considerations:
Thermal Management: The Raspberry Pi Zero 2 W generates significant heat during computer vision processing tasks, requiring passive ventilation near the CPU location
Cable Management: The camera's ribbon cable is delicate and has limited flexibility - the design must ensure the distance between the Pi's CSI port and camera mounting point doesn't require sharp cable folds
Component Height Constraints: The LiPo Rider Plus's USB-A port will likely dictate the minimum device thickness
Design Requirements and Scope
Functional Requirements:
Ergonomic Design: Comfortable single-handed operation with intuitive button placement and secure grip design
Breath Sampling Interface: Integrated mouthpiece design with internal airflow channel from user interface to sensor region, minimizing dead volume and preventing condensation damage to electronics
Camera Integration: Proper positioning with clear optical path for facial verification during breath sampling, including protection via recessed opening or transparent cover
Assembly Design: Two-part shell construction (top/bottom) using standard metric hardware (M2.5 or M3 screws) or engineered snap-fits for ease of assembly and maintenance
Cable Routing: Internal pathways and clips to manage interconnecting cables, preventing pinching, rattling, or component interference
Physical and Aesthetic Requirements:
Form Factor: Handheld device similar in size to digital medical instruments, targeting under 150 grams fully assembled
Professional Appearance: Medical-grade aesthetic with clean, modern industrial design language suitable for healthcare environments
Accessibility: Clear access to charging port, button actuation, and any status LED indicators
Finalized CAD files in multiple formats:
Native CAD files (fully parametric)
STEP/IGES files for manufacturing compatibility
STL files optimized for 3D printing
Complete 2D engineering drawings with dimensions, tolerances, and assembly instructions
Exploded view assembly drawings showing component placement and assembly sequence
Bill of Materials (BOM) with hardware specifications
Minimum 5 high-quality photorealistic renderings from multiple angles
Design rationale document explaining key design decisions and engineering considerations
Required Qualifications and Skills
Essential Requirements:
Minimum 3 years of professional CAD design experience with consumer electronics or medical device enclosures
Expert proficiency in professional parametric CAD software (SolidWorks, Fusion 360, Creo, or equivalent)
Demonstrated understanding of Design for Manufacturing (DFM) and Design for Assembly (DFA) principles
Portfolio showcasing relevant handheld device designs, particularly those involving embedded systems
Experience with Raspberry Pi or similar single-board computer integration
Preferred Qualifications:
Previous experience designing medical devices or healthcare products
Understanding of regulatory considerations for medical device housings
Knowledge of thermal management in portable electronic devices
Familiarity with breath-sampling devices or diagnostic equipment design
Experience with both 3D printing and injection molding processes
Professional Attributes:
Strong attention to detail and dimensional accuracy
Excellent communication skills for iterative design discussions
Ability to work independently while collaborating effectively with engineering team
Responsive to technical feedback and willing to iterate based on engineering requirements
Understanding of ergonomics and human factors in medical device applications
Application Requirements
To apply, please submit the following materials:
Portfolio: Examples of previous enclosure designs, particularly for electronic devices, medical equipment, or IoT products
Technical Approach: Brief description (300-400 words) of your proposed design methodology and approach to this specific project
Timeline and Pricing: Detailed project timeline with milestones and comprehensive pricing breakdown (fixed project fee preferred)
Software Specification: Identify which CAD software you will use for this project
Clarifying Questions: Any questions about project scope, component specifications, or technical requirements
Project Terms and Communication
Communication Expectations: Regular progress updates (minimum twice weekly) with availability for video conferences to discuss design progress and provide technical feedback. We maintain an collaborative approach with our engineering team available for technical consultations throughout the project.
Intellectual Property: All designs, files, and documentation become the exclusive property of OraLens Healthcare upon project completion and final payment.
Future Opportunities: This project represents potential for ongoing collaboration as our product line evolves through subsequent iterations and additional healthcare technology products.
To Apply: Please submit your complete proposal with all required materials.
This project offers the opportunity to contribute to meaningful healthcare technology innovation while working with an experienced engineering team in the medical technology sector.
Project Overview
OraLens Healthcare is developing an innovative portable breathalyzer device for healthcare applications and seeks an experienced CAD design engineer to create a professional, ergonomic enclosure that integrates multiple electronic components into a cohesive, user-friendly medical device. This project represents a critical step in transitioning from breadboard prototype to a production-ready handheld device.
As a healthcare technology company specializing in diagnostic solutions, we require a design that meets both functional engineering requirements and medical-grade aesthetic standards. The successful candidate will work directly with our CTO and engineering team to ensure the design meets our technical specifications while maintaining manufacturability and user experience standards.
Component Integration Requirements
The enclosure must precisely integrate the following specified components, with datasheets and detailed specifications provided upon project commencement:
Core Electronics:
Raspberry Pi Zero 2 W: Primary computing unit requiring secure mounting with screw bosses, thermal management considerations, and optional SD card access
Seeed Studio LiPo Rider Plus: Power management board necessitating precise cutouts for USB-C charging port and USB-A output, with consideration for the module's height profile
1500mAh PCM Protected Micro Li-Po Battery: Dedicated battery compartment with strain relief and secure retention mechanism
5MP Raspberry Pi Camera Module: Critical alignment requirements with rigid mounting for consistent focal distance and optical path
Two Push Buttons: User interface elements requiring ergonomic placement for intuitive thumb or index finger operation
A Gas sensor: SC05-H₂S
Critical Engineering Considerations:
Thermal Management: The Raspberry Pi Zero 2 W generates significant heat during computer vision processing tasks, requiring passive ventilation near the CPU location
Cable Management: The camera's ribbon cable is delicate and has limited flexibility - the design must ensure the distance between the Pi's CSI port and camera mounting point doesn't require sharp cable folds
Component Height Constraints: The LiPo Rider Plus's USB-A port will likely dictate the minimum device thickness
Design Requirements and Scope
Functional Requirements:
Ergonomic Design: Comfortable single-handed operation with intuitive button placement and secure grip design
Breath Sampling Interface: Integrated mouthpiece design with internal airflow channel from user interface to sensor region, minimizing dead volume and preventing condensation damage to electronics
Camera Integration: Proper positioning with clear optical path for facial verification during breath sampling, including protection via recessed opening or transparent cover
Assembly Design: Two-part shell construction (top/bottom) using standard metric hardware (M2.5 or M3 screws) or engineered snap-fits for ease of assembly and maintenance
Cable Routing: Internal pathways and clips to manage interconnecting cables, preventing pinching, rattling, or component interference
Physical and Aesthetic Requirements:
Form Factor: Handheld device similar in size to digital medical instruments, targeting under 150 grams fully assembled
Professional Appearance: Medical-grade aesthetic with clean, modern industrial design language suitable for healthcare environments
Accessibility: Clear access to charging port, button actuation, and any status LED indicators
Finalized CAD files in multiple formats:
Native CAD files (fully parametric)
STEP/IGES files for manufacturing compatibility
STL files optimized for 3D printing
Complete 2D engineering drawings with dimensions, tolerances, and assembly instructions
Exploded view assembly drawings showing component placement and assembly sequence
Bill of Materials (BOM) with hardware specifications
Minimum 5 high-quality photorealistic renderings from multiple angles
Design rationale document explaining key design decisions and engineering considerations
Required Qualifications and Skills
Essential Requirements:
Minimum 3 years of professional CAD design experience with consumer electronics or medical device enclosures
Expert proficiency in professional parametric CAD software (SolidWorks, Fusion 360, Creo, or equivalent)
Demonstrated understanding of Design for Manufacturing (DFM) and Design for Assembly (DFA) principles
Portfolio showcasing relevant handheld device designs, particularly those involving embedded systems
Experience with Raspberry Pi or similar single-board computer integration
Preferred Qualifications:
Previous experience designing medical devices or healthcare products
Understanding of regulatory considerations for medical device housings
Knowledge of thermal management in portable electronic devices
Familiarity with breath-sampling devices or diagnostic equipment design
Experience with both 3D printing and injection molding processes
Professional Attributes:
Strong attention to detail and dimensional accuracy
Excellent communication skills for iterative design discussions
Ability to work independently while collaborating effectively with engineering team
Responsive to technical feedback and willing to iterate based on engineering requirements
Understanding of ergonomics and human factors in medical device applications
Application Requirements
To apply, please submit the following materials:
Portfolio: Examples of previous enclosure designs, particularly for electronic devices, medical equipment, or IoT products
Technical Approach: Brief description (300-400 words) of your proposed design methodology and approach to this specific project
Timeline and Pricing: Detailed project timeline with milestones and comprehensive pricing breakdown (fixed project fee preferred)
Software Specification: Identify which CAD software you will use for this project
Clarifying Questions: Any questions about project scope, component specifications, or technical requirements
Project Terms and Communication
Communication Expectations: Regular progress updates (minimum twice weekly) with availability for video conferences to discuss design progress and provide technical feedback. We maintain an collaborative approach with our engineering team available for technical consultations throughout the project.
Intellectual Property: All designs, files, and documentation become the exclusive property of OraLens Healthcare upon project completion and final payment.
Future Opportunities: This project represents potential for ongoing collaboration as our product line evolves through subsequent iterations and additional healthcare technology products.
To Apply: Please submit your complete proposal with all required materials.
This project offers the opportunity to contribute to meaningful healthcare technology innovation while working with an experienced engineering team in the medical technology sector.