A 3D-Printed Rib in Bulgaria: What the Tokuda Project Shows About Custom Manufacturing

A rib reconstruction performed at Tokuda Hospital in Sofia offers a concrete example of 3D printing contributing to a highly individual project. Public accounts describe a patient-specific implant and the participation of 3DBGPRINT in digital preparation and production. The story brings together medical imaging, geometric modeling, manufacturing and a clinical team responsible for the operation.

Its interest reaches beyond the unusual object. A rib has a particular shape and a relationship to surrounding anatomy. Turning that requirement into a physical component demanded coordination between the people defining the clinical need and those preparing the geometry and manufacturing process. That coordinated work is central to understanding the case.

A specific clinical problem became a digital project

Bulgarian reporting described the reconstruction in November 2018, following the removal of an affected rib. The hospital's specialists determined the treatment and the requirements for the reconstruction. Digital visualization and preparation provided a model for the physical work that followed. Guinness identifies the surgeon as Dr Tzvetan Minchev, then Chief of Thoracic Surgery at Tokuda.

The important sequence is the movement from an individual requirement to defined geometry and then to a manufactured object. Each stage needs information from the previous one. A printer can reproduce a prepared model, but the model itself must be created and reviewed against the task it is meant to serve.

The company's account documents work on modeling, visualization and printing. The manufacturer 3DGence's case study identifies a DOUBLE P255 printer and Taulman Nylon 680. Those details give the story a specific production context: a digital anatomical form became a physical component through an identified process and material.

Why the digital model mattered

Patient-specific geometry is meaningful because the shape is tied to the particular reconstruction. The preparation stage translates the available clinical information into a representation that can be reviewed and manufactured. Decisions about that representation belong within the collaboration between the clinical and technical contributors.

This also explains why a dramatic photograph tells only part of the story. The finished object is the visible result of earlier decisions about geometry, production and review. Understanding those decisions makes the case more informative than simply describing a printer producing an anatomical shape.

Public historical sources describe the involvement of 3DBGPRINT alongside the Tokuda team. Keeping those roles clear preserves what is distinctive about the work: specialist medical judgment and digital manufacturing contributed different parts of the project.

A place in the history of additive manufacturing

Guinness World Records maintains an entry titled “First 3D printed rib to be implanted” associated with the Bulgarian project. Its account refers to an announcement in January 2019 and describes a nylon-based rib made on a 3DGence printer. The earlier Bulgarian reporting and the later international announcement show how the project reached audiences over time.

The broader history of additive manufacturing in medicine contains different projects, materials and anatomical applications. Discussing the Tokuda case precisely makes its contribution easier to understand. The documented Bulgarian collaboration stands on its own facts and chronology.

The most useful way to read such a case is to ask what was individually designed, how the contributors worked together and which parts of the process are documented. Those questions reveal more than a broad claim that printing can transform every application in the same way.

Lessons for other custom-manufacturing projects

The case highlights a general principle: the usefulness of a printed object depends on how clearly its purpose has been translated into geometry and a production brief. In ordinary product development, that may concern a replacement housing, an assembly interface or a demonstration model rather than an anatomical reconstruction.

Start by identifying who defines the requirements. Establish which information is authoritative, who reviews the model and how the approved version reaches manufacture. If a requirement changes, connect the revised geometry to that decision so the next physical object represents the current brief.

A second lesson is to view digital preparation as real project work. File creation, interpretation and revision can be as consequential as the manufacturing stage. A budget and schedule that recognise those steps give the team a more realistic basis for planning.

Finally, record what was actually achieved. A photograph, an accepted geometric model and a completed manufacturing stage each document something different. A useful project archive connects them through dates, revisions and clearly identified responsibilities.

The Tokuda rib remains an engaging Bulgarian example of an individual need brought into a digital manufacturing workflow. For readers exploring custom 3D printing today, 3DBGPRINT provides a practical starting point for discussing a project's geometry, available information and appropriate next manufacturing step.