# Concept Justification of Future 3 DPVS and Novel Approach towards its Conceptual Development
## 3 Conceptual Design Approach for 3 DPVS
### Potential Methodology and Tools Supporting 3 DPVS Conceptual Design
#### 3.4.2 Methodology and Tools for Concept Generation and Design Innovation  
As discussed in previous sections, stage two is the most important stage at current stage and innovation process is the core part of concept design. Methodology and tools here chiefly involve the generation of innovative concepts and ideas to solve design problems, which is also the chief task in step 3 of stage 2, as illustrated in Section 3.3.1. Among the three tasks corresponding with the three stages in 3 DPVS conceptual design, the second solves the problems identified in the first stage and generates concepts for the third stage. After the design initiation, designers can have a general understanding of the design direction, aim as well as product requirements of 3 DPVS; however, it can be impossible to have direct knowledge and resourcefulness regarding what innovation concepts could be accessible and how to generate them in a methodological way in order to fulfil the directed aims. Considering this gap, an effective methodology is therefore necessary to help designers generate novel concepts and solutions in an adequate and effective way. The methodology for this stage therefore occupies great weight, and essential work about 3 DPVS innovation and creation will take place through this methodology, which could help achieve the 3 DPVS conceptual design.  
_Theory of Innovative Problem-Solving (TRIZ) as Potential Methodology:_ A TRIZ-based methodology will be utilized for conceptual generation of 3 DPVS. There are several reasons why TRIZ will be used as a methodology here and what makes it the most valuable tool in this design context.  
Firstly, TRIZ has been utilized worldwide as a relatively mature tool for product innovation and concept design, which is also the focus inside the current 3 DPVS stage. Secondly, TRIZ could be used combined with other proven useful and effective design methods, to ensure the higher quality of the design compared with simply applying one single tool. The eligibility of TRIZ to integrate several other design methods in the recent engineering world gives it the advantage to be applied here as the methodology for 3 DPVS conceptual innovation. Third, 3 DPVS innovation will be the innovation process for cross-domain science and engineering, regarding cell culture, vibration, scaffold engineering and 3 DP technologies; therefore, the innovation process will be different than that of a product from one domain or realm. TRIZ and its related tools have been utilized for cross-domain design and this contributes another reason why it would be beneficial to utilize TRIZ-based methodology in this stage. The fourth reason is that the nature of the TRIZ-based process is to solve contradictions [15; 16; 33; 34]. The more sophisticated the contradictions a definite design scenario could throw up, the more beneficial it could be to apply TRIZ-based methods. As might be the potential case, the conceptual design of 3 DPVS will be divided into contradiction-solving for geometric, mechanical, biological and dynamic conflicts and contradictions, which may result in a rather complex and challenging contradiction level. Therefore, TRIZ-based methodology and tools would be rather appropriate for the 3 DPVS design here.