David Wang: in San Jose, CA

Responsible for the assessment of the fatigue, process, and expanded size design of the nitinol frame for the Cephea TMVR valve. Successful acquisition; now an Abbott subsidiary. • Cyclic Fatigue - Developed fatigue methods, protocols and reports, test fixturing, and in-house frame fatigue testers for cyclic strain life assessment of processed nitinol components after final conditioning for intended nominal use case. Worked with contractual testing lab and FEA consultant for material assessment and safety factor development. Interpreted clinical data for relevant boundary conditions. David C Wang • Expanded Size Design - Understanding of nitinol material properties for design considerations of expanded valve sizes. Worked with material and manufacturing vendor, FEA consultant to prototype and verify nitinol frame design. Familiarity with target strain values during heat treatment, sheathing, and cyclic loading. San Jose, CA • Process Development - Worked with manufacturing vendor to create a capable process across whole workflow of nitinol part manufacturing: laser cutting, surface conditioning, heat expansion, dimensional (optical) and visual inspection. Maintained design intent while maximizing capability through feedback loops (visits, weekly 408.691.4852 meetings) with vendor and drawing releases. Travelled internationally. • DV Testing - Responsible for retention, corrosion, and rivet studies for FIH submission.

Contributed to the design, testing, and assessment of the Lotus TAVR valve, especially R&D Engineer with hydrodynamic performance and valve durability via pulse duplicator and accelerated wear experience in start-up and testers. Additionally, data acquisition interfacing with hardware and Labview executables. corporate environments; • ISO 5840:3 Compliance / IDE Submission- All relevant testing (required and design, testing, and informative) for regulatory submission for valve implant performance and durability. verification, specifically in Wrote and executed protocols and reports for transcatheter aortic valve submission in class III medical devices. expanding valve sizes. Data compilation, analysis, and graphical representation for clarity in reporting. Compiled rationale for successful design confidence with regulatory affairs and design assurance for clinical use.