In my 5-minute statement, I report about our efforts to make materials of ProHEAL digitally available. ProHEAL is a specific TRIZ version developed within the GDR inventor schools. ProHEAL is an acronym and stands for "Programme for Working Out Inventive Tasks and Solution Approaches". ----------- A year ago, Rainer Thiel, the co-author of this presentation and one of the central figures of the GDR inventor schools, celebrated his 90th birthday. This was the occasion for the publication of two booklets on the GDR inventor schools (in German) in the series "Rohrbacher Manuskripte" where ProHEAL is presented in very detail. In the course of preparing for this conference, an abridged version of this publication was translated into English and published with LIFIS-Online. ----------- What was characteristic for the GDR inventor schools? In the 1980s, more than 300 courses were conducted in various GDR companies. The participants were released from work for two one-week courses, which usually took place in a seminar house of the company. The participants were supposed to bring problems from their own work. These problems were collectively worked through in the first week thus teaching the methodology in greater depth. The participants returned to their company with a knapsack full of tasks, deepened the analysis of their problem in self-study and developed solution proposals according to the methodology. These proposals were discussed in the second week of the seminar and often led to results that could be directly implemented in production. ----------- The time frame does not allow me to go into ProHEAL in more detail. I will limit myself to two aspects – the problem field levels and the ABER matrices. ProHEAL follows a systemic approach of identifying and delimiting a problematic system and modelling and analysing this system in more detail with the goal to transform the system in such a way that the problems disappear. Entry and exit of the algorithm is on the first, the technical-economic problem field level, where external contradictions in operational management show up and are to be solved. The first level is characterised by contradictions between societal challenges as potential requirements and the technical possibilities, whereby at this level only the state of the art and own production experiences play a role. 80% of the problems can be solved directly at this level without an inventive task. However, the analysis and modelling carried out here is on the one hand necessary in order to identify the remaining 20% of inventive tasks, and on the other hand, the basic variant based on the state of the art to be developed here is the starting point for more in-depth analyses. ----------- Levels 2 and 3 I can only touch on cursorily. On the second level, contradictions are to be analysed more precisely that could not be resolved on the first level. The critical functional area in the basic variant has to be identified as core variant to be carefully analysed based on a ABER(2) matrix to identify all significant technical-technological contradictions. ----------- Similarly on the third level. At this level, Substance-Field approaches and Ardenne's monograph on technically usable scientific effects played an important role. Within ProHEAL a digital database of such effects was developed already in the 1980s. ----------- This slide shows the ProHEAL algorithm schematically. Interesting partial aspects of ProHEAL such as the concepts Surprisingly Simple Solutions, Novel Technical Solution or Technical Solution from another Domain cannot be discussed here. A special role played the ABER matrices as tool for a multidimensional requirements analysis on the respective problem field level. Parameter variations in the model have different and opposite effects on the individual fields of the matrix and thus make it possible to uncover essential contradictions very quickly. ----------- This slide summarises the most important contributions of ProHEAL to a TRIZ methodology: Due to the specific scope of application in socio-economic practices of large production units (combinates), ProHEAL differs significantly in some aspects from ARIZ-85C. This refers firstly to the more detailed elaboration of technical-economic contradictions between social needs and technological possibilities. Although Altshuller is also aware of administrative contradictions, they are not seriously addressed in his work. Secondly, ProHEAL early abandoned a monofunctional orientation. Requirement elicitations and value determinations are recorded under different aspects at all problem field levels in the ABER matrices. Thirdly, in addition to solving a contradictory problem situation, the transfer of the solution into production also plays an important role in ProHEAL. Thus, even the solutions of contradictions on levels 2 and 3 are being returned to level 1 to decide about the transfer to production. Thank you for your attention.