Forging certainty: A novel framework for the specification of combination products

The specification for a combination product represents a critical covenant of its quality. Too often, the current intellectual framework for forging this covenant remains a fragmented patchwork of legacy pharmaceutical and medical device paradigms. This paper argues that significant product failures are not random accidents but predictable consequences of these historical limitations. We therefore propose a novel, deductive framework-Quality by Design in Specification (QbD-S)-that complements existing empirical methods to address this systemic challenge. This paper presents a formal intellectual engine, the Universal Attribute Generator (UAG), which deconstructs therapeutic failure into five foundational Tenets and uses a rigorous "Interrogatory Filter" (Stress > Capacity) to systematically derive a comprehensive set of quality attributes. This framework introduces the Criticality Vector to contextualize consequence by adding the dimension of "Context" to the standard scalar of "Severity," and mandates a Structured Falsification Protocol to build scientific confidence in its conclusions. The ultimate output is a "Master Control Strategy"-a binding regulatory mandate that legislates the "Fate" of each attribute, enabling either "Input-Controlled" Real-Time Release or mandating traditional "Symptom-Controlled" testing. QbD-S provides a systematic engine for translating patient needs into a scientifically rigorous and defensible covenant of quality.