Artificial vascular models for endovascular training (3D printing)

Torres, Inez Ohashi; Luccia, Nélson De

doi:10.1515/iss-2018-0020

Cited by 17 publications

(23 citation statements)

References 54 publications

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“…They are used as a communication tool with patients or between professionals [ 3 ], facilitate decision-making, and allow simulation before the surgical procedure [ 2 ]. These simulators of medical techniques such as orotracheal intubations [ 52 ], sutures [ 53 ], endoscopies [ 54 ], endovascular interventions [ 55 ], or other surgical procedures [ 56 – 58 ] can be developed at a very low cost. They can also be an alternative to corpses for teaching anatomy [ 59 – 61 ].…”

Section: Discussionmentioning

confidence: 99%

Point-of-care manufacturing: a single university hospital’s initial experience

et al. 2021

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Background The integration of 3D printing technology in hospitals is evolving toward production models such as point-of-care manufacturing. This study aims to present the results of the integration of 3D printing technology in a manufacturing university hospital. Methods Observational, descriptive, retrospective, and monocentric study of 907 instances of 3D printing from November 2015 to March 2020. Variables such as product type, utility, time, or manufacturing materials were analyzed. Results Orthopedic Surgery and Traumatology, Oral and Maxillofacial Surgery, and Gynecology and Obstetrics are the medical specialties that have manufactured the largest number of processes. Working and printing time, as well as the amount of printing material, is different for different types of products and input data. The most common printing material was polylactic acid, although biocompatible resin was introduced to produce surgical guides. In addition, the hospital has worked on the co-design of custom-made implants with manufacturing companies and has also participated in tissue bio-printing projects. Conclusions The integration of 3D printing in a university hospital allows identifying the conceptual evolution to “point-of-care manufacturing.”

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Section: Discussionmentioning

confidence: 99%

Point-of-care manufacturing: a single university hospital’s initial experience

et al. 2021

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“…One explanation would be that we did not use the right resin for fabrication because a hollow model must not have porosities and should be relatively flexible. Another reason was probably the fact that we did not expose the model after printing to UV light for curing purposes [ 31 ]. However, our classic whole 3D printed models remained intact even after one year.…”

Section: Discussionmentioning

confidence: 99%

3D Printed Models—A Useful Tool in Endovascular Treatment of Intracranial Aneurysms

et al. 2021

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Many developments were made in the area of endovascular treatment of intracranial aneurysms, but this procedure also requires a good assessment of vascular anatomy prior to intervention. Seventy-six cases with brain aneurysms were selected and 1:1 scale 3D printed models were created. We asked three interventional neurosurgeons with different degrees of experience (ten years, four years, and a fourth-year resident) to review the cases using CTA (computed tomography angiogram) with MPR (multiplanar reconstructions) and VRT (volume rendering technique) and make a decision: coil embolization or stent-assisted coil embolization. After we provided them with the 3D printed models, they were asked to review their treatment plan. Statistical analysis was performed and the endovascular approach changed in 11.84% of cases for ten-year experienced neurosurgeons, 13.15% for four years experienced neurosurgeon, and 21.05% for residents. The interobserver agreement was very good between the ten years experienced interventionist and four years experienced interventionist when they analyzed the data set that included the 3D printed model. The agreement was higher between all physicians after they examined the printed model. 3D patient-specific printed models may be useful in choosing between two different endovascular techniques and also help the residents to better understand the vascular anatomy and the overall procedure.

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“… 9 Many of the previously described simulation models are limited in one or more of these regards. 6 The Biomodex EVIAS model we used provided several advantages in this respect. Our confidence in the spatial accuracy of the model allowed us to predict and plan the landing zones for the FDS deployment and the stent sizes we would require, as well as be confident regarding the biplane angiographic working angles we could use.…”

Section: Discussionmentioning

confidence: 99%

“…This has stimulated the development of 'in vitro' alternatives for endovascular training. 6 Training models are available that can be generated based on medical imaging data. 7 These aim to replicate the anatomy of an individual patient in a three-dimensional structured template.…”

Section: Introductionmentioning

confidence: 99%

Biomodex patient-specific brain aneurysm models: the value of simulation for first in-human experiences using new devices and robotics

Yamaki

Cancelliere

Nicholson

et al. 2020

J NeuroIntervent Surg

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BackgroundWith the recent advent of advanced technologies in the field, treatment of neurovascular diseases using endovascular techniques is rapidly evolving. Here we describe our experience with pre-surgical simulation using the Biomodex EVIAS patient-specific 3D-printed models to plan aneurysm treatment using endovascular robotics and novel flow diverter devices.MethodsPre-procedural rehearsals with 3D-printed patient-specific models of eight cases harboring brain aneurysms were performed before the first in-human experiences. To assess the reliability of the experimental model, the characteristics of the aneurysms were compared between the patient and 3D models. The rehearsals were used to define the patient treatment plan, including technique, device sizing, and operative working projections.ResultsThe study included eight patients with their respective EVIAS 3D aneurysm models. Pre-operative simulation was performed for the first in-human robotic-assisted neurovascular interventions (n=2) and new generation flow-diverter stents (n=6). Aneurysms were located in both the anterior (n=5) and posterior (n=3) circulation and were on average 11.0±6.5 mm in size. We found reliable reproduction of the aneurysm features and similar dimensions of the parent vessel anatomy between the 3D models and patient anatomy. Information learned from pre-surgical in vitro simulation are described in detail, including an improved patient treatment plan, which contributed to successful first in-world procedures with no intraprocedural complications.ConclusionsPre-procedural rehearsal using patient-specific 3D models provides precise procedure planning, which can potentially lead to greater operator confidence, decreased radiation dose and improvements in patient safety, particularly in first in-human experiences.

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Artificial vascular models for endovascular training (3D printing)

Cited by 17 publications

References 54 publications

Point-of-care manufacturing: a single university hospital’s initial experience

Point-of-care manufacturing: a single university hospital’s initial experience

3D Printed Models—A Useful Tool in Endovascular Treatment of Intracranial Aneurysms

Biomodex patient-specific brain aneurysm models: the value of simulation for first in-human experiences using new devices and robotics

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