OTO twin
BI-MATERIAL 3D-PRINTING INNOVATION FOR SURGICAL EDUCATION
OTO twin is manufactured using a bi-material high-resolution 3D printing process from real human temporal bone, combining high anatomical fidelity and innovative assembly of soft tissue and bone structures
ANATOMICAL HIGH-FIDELITY
OTO twin has been morphologically evaluated with an innovative and OBJECTIVE method derived from engineering sciences (1)(2). OTO twin reproduces the anatomy of a real normal temporal bone (adult and child) with an accuracy of a tenth of a millimeter for all anatomical structures, and even a hundredth of a millimeter for certain key structures
in ear surgery, such as the facial nerve (1)(2). Its anatomical validity makes OTO twin a pedagogical tool that can
be used for education in ear surgery, cochlear implantation and otoneurosurgery, both for initial training, continuing education, evaluation and certification.
1. J. Chauvelot et al., Annals of Translational Medecine, 2020 Mar; 8(6): 304.
2. J. Chauvelot et al., Computer Methods in Biomechanic and biomedical engineering, 2020, VOL. 23, NO. 51,563-565
ASSEMBLY OF BONE STRUCTURE AND SOFT TISSUE
The coexistence of hard resin, reproducing the bone, and soft resin, reproducing the soft tissues (facial nerve, tympanic cord, ossicular joints, dura mater, round window, anterior and posterior labyrinth), makes OTO twin a unique pedagogical tool, with a mobile ossicular chain, a secondary tympanic membrane closing the round window, as well as a faithful reproduction of the consistency of the skin in the external auditory canal and the tympanic membrane. OTO twin allows to simulate middle ear surgery (mastoidectomy, pitympanotomy, posterior tympanotomy, canal approach etc.) but also cochlear implantation (cochleostomy, insertion of the electrode holder) and approaches in otoneurosurgery.
Manufactured with PolyJet technology, OTO twin is the result of an interdisciplinary collaboration within the University of Lorraine between Pr. C. Parietti-Winkler (ENT Service and CCF, CHU de Nancy, EA 3450 DevAH) and Pr. A.S. Bonnet (LEM3 laboratory), combining the expertise of health sector and engineering sciences.
SEVERAL TYPES OF PRODUCT FOR A STEP-BY-STEP LEARNING OF OTOLOGIC SURGERY AND OTONEUROSURGERY
2 VERSIONS FOR THE SAFETY OF ADULT AND PEDIATRIC PATIENTS
OTO twin is available in Adult and in Pediatric versions.
These 2 versions ensure, before performing real surgeries, the safe acquisition of procedural skills though simulation for adults and children, for whom cadaveric anatomical parts are nonexistent.
Due to the diversity of models and versions, OTO twin is the only educational device that allows the construction of a teaching program in otologic surgery and otoneurosurgery, with a progressive complexity of the learning objectives.
2 MODELS FOR A WELL-STRUCTURED TEACHING PROGRAM
Each version is available inBasic (black soft resin) and Advanced (white soft resin) models, depending on the color of the soft resin.
With the beginner model, the high contrast between white hard resin and black soft resin allows the trainee to easily visualize noble structures (facial nerve, dura mater, secondary tympanum) and facilitates their localization.
With the expert model, the low contrast between the hard and soft resins in same color, makes the localization of noble structures more complex and
closer to reality.
OUR HONOURS
Discover the rewards attributed to the OTOtwin project
OTO Twin : key points
Manufactured with PolyJet technology, OTO twin is the result of an interdisciplinary collaboration within the University of Lorraine between Pr. C. Parietti-Winkler (ENT Service and CCF, CHU de Nancy, EA 3450 DevAH) and Pr. A.S. Bonnet (LEM3 laboratory), combining the expertise of health sector and engineering sciences.
