Frisch promoviert

Philipp Lulla is doing his doctorate on additively manufactured vascular stents: precision, individualisation and new approaches in medical technology

In his dissertation, Philipp Lulla is investigating how different manufacturing processes influence the mechanical and biological properties of vascular stents. The focus is on additive manufacturing using LPBF and its potential - but also its limitations - compared to conventional manufacturing processes.

1. you have completed your doctorate - what does that mean for you personally?

Completing my doctorate marks an important personal and professional milestone for me. It stands for perseverance, independence and the ability to work on complex issues independently and bring them to a successful conclusion.

2 What is your dissertation about?

This dissertation investigates the influence of different manufacturing processes on the mechanical and biological properties of vascular stents, with a particular focus on additive manufacturing using LPBF in comparison to conventional methods. To this end, suitable manufacturing parameters were developed, a standardised stent design was implemented and samples were manufactured and post-processed both additively and conventionally. Extensive material science and standardised medical technology tests formed the basis of the evaluation.

The results show that additive manufacturing is fundamentally suitable and offers particular advantages in terms of customisation and material control, but is limited by restrictions in resolution and design freedom. Overall, the work contributes to a better understanding of the potential and limitations of additive manufacturing in medical technology and shows approaches for future optimisation.

3. what was a highlight or special experience in connection with your doctorate?

A particular highlight was the moment when I removed the first additively manufactured stents from the powder bed. This exposure of the structures showed very impressively that additive manufacturing really can be a promising way of producing such delicate components. It was a motivating moment in which the previous development work was confirmed for the first time.

4. what plans do you have for your professional future?

For my professional future, I plan to further expand my scientific and technical expertise in a targeted manner and to contribute to an innovative environment. I am currently working in development in the field of additive manufacturing, where I can directly apply and deepen the knowledge I acquired during my doctorate. I am particularly interested in the further development and industrial implementation of modern manufacturing technologies. In the long term, I would like to take on more responsibility in projects and actively contribute to the development of future-oriented solutions.

5. what tips can you give future doctoral students?

Stay patient and structured, even if progress seems slow at times, and keep the overarching goal in mind. Regular exchanges with others and obtaining feedback help to recognise and overcome challenges at an early stage.

6 Why did you choose OTH Regensburg for your doctorate?

I chose OTH Regensburg because it offers a practice-orientated research environment and good opportunities to combine science and application. I was particularly impressed by the close cooperation with industry and the excellent supervision in my chosen subject area with a lot of interdisciplinary expertise.

 

LINKS

 

Prof. Dr rer. nat. Karla Lehle, Prof. Dr.-Ing. Thomas Schratzenstaller, Dr sc. hum. Philipp Lulla, Prof. Dr Christof Schmid and Prof. Dr Ulf Noster (from left to right) Photo: PD Dr Matthias Widbiller

Philipp Lulla (1994, Bietigheim-Bissingen)

Profile

    • Subject

      Medical Engineering

    • Doctoral subject

      Human Sciences (Dr.sc.hum.)

    • Faculty

      Mechanical Engineering

    • Lab

      Medical Devices (MD)

    • Doctoral period

      01.12.2022-16.03.2026

    • Cooperation partner

      OTH Regensburg

Subject

Doctoral subject

Faculty

Lab

Doctoral period

Cooperation partner

Medical Engineering

Human Sciences (Dr.sc.hum.)

Mechanical Engineering

Medical Devices (MD)

01.12.2022-16.03.2026

OTH Regensburg

    • Supervisor

      Prof. Dr-Ing. Thomas Schratzenstaller, first reviewer and supervisor

    • Supervisor

      Prof. Dr rer. nat. Karla Lehle, second reviewer

    • Title of the dissertation

      Influence of the manufacturing process on the mechanical and biological properties of coronary stents

Supervisor

Supervisor

Title of the dissertation

Prof. Dr-Ing. Thomas Schratzenstaller, first reviewer and supervisor

Prof. Dr rer. nat. Karla Lehle, second reviewer

Influence of the manufacturing process on the mechanical and biological properties of coronary stents