University of Twente Student Theses
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Design and Evaluation of a Surgeon- and CSD-Friendly Bone Rongeur
Rispens, H.J. (2025) Design and Evaluation of a Surgeon- and CSD-Friendly Bone Rongeur.
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| Full Text Status: | Access to this publication is restricted |
| Embargo date: | 7 July 2027 |
| Abstract: | Over 100 000 orthopaedic surgeries where performed in the Netherlands in 2023. Many boneremoval instruments used in these procedures require high grip strength and large hands, causing issues for a significant number of surgeons. Additionally, the instruments are often difficult to clean. This thesis presents a new bone rongeur usable single-handedly by 60-year-old female surgeons with low hand size and grip strength, while meeting CSD (Central Sterilisation Department) standards. The design draws inspiration from a ratchet-based rongeur developed by van Gorkum et al. with a demonstrated high mechanical advantage. Using this design as inspiration, a new rongeur was designed from the ground up, with cleanability integrated as a key requirement from the start. Requirements were derived and several ideas explored; a ratchet mechanism was selected and developed further. A new type of rotational joint was designed, providing at least 1 mm clearance to enable effective cleaning. Experiments showed a stainless steel prototype achieved a mechanical advantage of ∼ 12 with a handle span of 40 – 92 mm, both appropriate for the intended user group. An interview with a CSD expert confirmed the design’s good cleanability. |
| Item Type: | Essay (Master) |
| Faculty: | ET: Engineering Technology |
| Subject: | 44 medicine, 52 mechanical engineering |
| Programme: | Industrial Design Engineering MSc (66955) |
| Link to this item: | https://purl.utwente.nl/essays/107542 |
| Export this item as: | BibTeX EndNote HTML Citation Reference Manager |
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