Entwicklung eines Endoskopiesimulators mit spezieller Haptik für verschiedenartige neue Trainingsmethoden

Koloskopie ist ein endoskopisches Verfahren zur Untersuchung des Colons. Da das Erlernen der Untersuchung schwierig ist und für den Patienten gefährlich sein kann, wird versucht, durch den Einsatz von Trainingsmodellen oder Computersimulatoren ein patientenunabhängiges Training zu realisieren. Die Möglichkeiten und Grenzen dieser Methoden werden in der vorliegenden Arbeit aufgezeigt und daraus neuartige Methoden zur Verbesserung des Trainings abgeleitet. Um diese neuen Trainingsmöglichkeiten zu realisieren, wurde der vorhandene Simulator "EndoSim" um eine akustische Ausgabe ergänzt. Die Haptik wurde sowohl im Umfang als auch bezüglich der Funktionalität erweitert. Dadurch entstand der erste Koloskopiesimulator, welcher eine maximale Realitätstreue durch aktives Force-Feedback auf allen bei dieser Untersuchung möglichen Freiheitsgraden bietet. Des Weiteren ist dabei erstmals ein Koloskopiesimulator mit Positionierung auf den vier Freiheitsgraden realisiert worden. Dies wurde genutzt, um dem Trainierenden neue Möglichkeiten der Hilfe anzubieten: Ein Lernender kann sich anhand von Aufnahmen führen lassen, diesen Wiedergabemodus für eigene Versuche unterbrechen und sich bei Schwierigkeiten wieder auf den empfohlenen Weg zurücksetzen lassen. Für Nutzer des Force-Feedback-Modus wurde die Möglichkeit geschaffen, sich bei Problemen einen vorausberechneten Weg sowohl optisch als auch haptisch aufzeigen zu lassen. Die neu eingeführten Methoden erweitern in Ausbildung und Assessment den Einsatzbereich von Endoskopiesimulatoren. Zusätzlich ist es durch die neue Haptik einfach möglich, weitere Anwendungen zur Verbesserung des Trainings -- wie paralleles haptisches Training oder delokalisierte Anleitung durch einen Experten -- zu realisieren

Prevalence of haptic feedback in robot-mediated surgery : a systematic review of literature

© 2017 Springer-Verlag. This is a post-peer-review, pre-copyedit version of an article published in Journal of Robotic Surgery. The final authenticated version is available online at: https://doi.org/10.1007/s11701-017-0763-4With the successful uptake and inclusion of robotic systems in minimally invasive surgery and with the increasing application of robotic surgery (RS) in numerous surgical specialities worldwide, there is now a need to develop and enhance the technology further. One such improvement is the implementation and amalgamation of haptic feedback technology into RS which will permit the operating surgeon on the console to receive haptic information on the type of tissue being operated on. The main advantage of using this is to allow the operating surgeon to feel and control the amount of force applied to different tissues during surgery thus minimising the risk of tissue damage due to both the direct and indirect effects of excessive tissue force or tension being applied during RS. We performed a two-rater systematic review to identify the latest developments and potential avenues of improving technology in the application and implementation of haptic feedback technology to the operating surgeon on the console during RS. This review provides a summary of technological enhancements in RS, considering different stages of work, from proof of concept to cadaver tissue testing, surgery in animals, and finally real implementation in surgical practice. We identify that at the time of this review, while there is a unanimous agreement regarding need for haptic and tactile feedback, there are no solutions or products available that address this need. There is a scope and need for new developments in haptic augmentation for robot-mediated surgery with the aim of improving patient care and robotic surgical technology further.Peer reviewe

The validation and application of a novel colonic polypectomy trainer. The WIMAT colonoscopy suitcase

Summary Background and Aims The WIMAT colonoscopy suitcase is an ex-vivo, porcine, polypectomy simulator. This has been developed in response to the increasing demand for polypectomy training following the introduction of the National Bowel Cancer Screening Programme. The aims of this thesis are to establish if the simulator is a valid form of polypectomy skills training and to identify if this model can be used to develop objective parameters for polypectomy assessment. Materials and Methods A series of clinical trials were systematically conducted to test the validity of the WIMAT colonoscopy suitcase. This included evaluating its content, construct and concurrent validity and conducting a skills transfer study comparing the WIMAT colonoscopy suitcase with a virtual reality simulator. Objective assessment parameters were examined by measuring the accuracy of self-assessment and using video coding software to analyse the hand movements performed during simulated polypectomy tasks. Results Content validity was demonstrated by experts who scored the model’s anatomical, mechanical and visual realism favourably across multiple parameters (p=0.05). The ratio of rotational hand movements to endoscopic tip angulation (RoTA) was significantly different when comparing novices to experts (p=<0.05). Discussion The WIMAT colonoscopy suitcase is a valid form of polypectomy skills training. The simulator can be used to address the increasing demand for training in this procedure. Further work is needed to assess the reliability of the RoTA score at different stages of the polypectomy procedure before it is used as an assessment tool

Modelos de simulação clínica virtual : revisão de escopo

Orientador: Prof. Dr. Jorge Vinícius Cestari FelixCoorientador: Profª Drª Shirley BollerDissertação (mestrado) - Universidade Federal do Paraná, Setor de Ciências da Saúde, Programa de Pós-Graduação em Enfermagem. Defesa : Curitiba, 25/03/2022Inclui referências: p. 90-100Área de concentração: Prática Profissional de EnfermagemResumo: O objetivo deste presente estudo foi identificar quais modelos de simulação clínica virtual descritos na literatura científica são utilizados como estratégia de ensino em estudantes e profissionais de enfermagem. A simulação clínica, é uma técnica que substitui as experiências reais por experiências guiadas replicáveis permitindo aos estudantes e profissionais de enfermagem vivenciarem a representação de um acontecimento real. Uma vez que a simulação clínica virtual utiliza um computador de alto nível, fazendo com que essa técnica viabilize condições de maior segurança e autoconfiança do estudante durante sua formação teórica e prática, consolidando seus conhecimentos, habilidades e competências. Método: Revisão sistematizada do tipo Scoping Review, que consiste nas cinco etapas: (1) formulação da questão de pesquisa (2) identificação dos estudos relevantes; (3) seleção de estudos; (4) mapeamento de evidências científicas; (5) apresentação e interpretação dos resultados. As bibliotecas digitais e bases de dados escolhidas para este estudo foram: PubMed, Medline, Scielo, Scopus, BvS, Web of Science, Lilacs, Embase, Ebsco. Os descritores utilizados foram: Simulação/ Simulação clínica/ Simulação clínica virtual/ Realidade virtual /Treinamento por Simulação/ Treinamento com Simulação de Alta Fidelidade/ Simulação por Computador/ Estudante de Enfermagem/ Estratégias de ensino/ Educação. A coleta de dados ocorreu no período de 1° de maio até 1° de novembro do ano de 2020. Foram descritos os seguintes critérios de seleção: trabalhos de qualquer natureza que retratam estudos sob simulação clínica virtual em estudantes de enfermagem da graduação e pós-graduação; artigos publicados na literatura nacional e internacional nos idiomas português, inglês e espanhol dos últimos 20 anos, desde janeiro 2000 até agosto 2020, todos estes disponíveis online nas bases de dados consultados e aqueles que respondem ao problema ou questão de revisão. Os dados extraídos foram analisados e sintetizados narrativamente. Resultados: Dos 711 artigos recuperadas na busca, foram salvas para revisão e conteúdo, onde apenas 52 artigos duplicados e excluídas por não contribuírem com elementos para a análise temática desta revisão, 507 estudos foram excluídos com base no título e resumo, dos quais 152 foram selecionados, assim 99 estudos foram excluídos com base no conteúdo. Apenas 53 estudos atenderam os critérios de seleção para o estudo. Destes, 16 foram selecionados no Scopus, 17 no Medline/PubMed, 1 no Embase, 11 no Ebesco, 1 no BvS, 7 no Web Of Science e 5 no PubMed Central. Conclusão: Esta revisão de escopo fornece uma avaliação abrangente do uso de diferentes modelos de simulação clínica virtual no ensino de enfermagem, esses modelos podem melhorar o conhecimento de estudantes e profissionais de enfermagem. Em geral, o uso da simulação de realidade virtual deve ser considerado para aprimorar o conhecimento e como complemento a outras estratégias de simulação para melhorar a qualidade e a segurança da prática clínica. No entanto, a heterogeneidade e o risco de viés entre os estudos incluídos devem ser levados em consideração. Estudos de grande escala rigorosamente desenhados são necessários para confirmar ainda mais os resultados desta revisão.Abstract: The objective of this present study was to identify which virtual clinical simulation models described in the scientific literature are used as a teaching strategy for nursing students and professionals. Clinical simulation is a technique that replaces real experiences with replicable guided experiences, allowing nursing students and professionals to experience the representation of a real event. Since the virtual clinical simulation uses a high-level computer, making this technique possible conditions of greater security and self-confidence of the student during their theoretical and practical training, consolidating their knowledge, skills and competences. Method: Systematized review of the Scoping Review type, which consists of five steps: (1) formulation of the research question (2) identification of relevant studies; (3) selection of studies; (4) mapping of scientific evidence; (5) presentation and interpretation of results. The digital libraries and databases chosen for this study were: PubMed, Medline, Scielo, Scopus, BvS, Web of Science, Lilacs, Embase, Ebesco. The descriptors used were: Simulation / Clinical Simulation / Virtual Clinical Simulation / Virtual Reality / Training by Simulation / Training with High Fidelity Simulation / Computer Simulation / Nursing Student / Teaching Strategies / Education. Data collection took place from May 1st to November 1st, 2020. The following selection criteria were described: works of any nature that portray studies under virtual clinical simulation in undergraduate and graduate nursing students graduation; articles published in national and international literature in Portuguese, English and Spanish for the last 20 years, from January 2000 to August 2020, all of which are available online in the consulted databases and those that respond to the problem or review question. The extracted data were analyzed and synthesized narratively. Results: Of the 711 articles retrieved in the search, they were saved for review and content, where only 52 articles were duplicated and excluded for not contributing elements to the thematic analysis of this review, 507 studies were excluded based on title and abstract, of which 152 were selected, thus 99 studies were excluded based on content. Only 53 studies met the selection criteria for the study. Of these, 16 were selected from Scopus, 17 from Medline/PubMed, 1 from Embase, 11 from Ebesco, 1 from BvS, 7 from Web Of Science and 5 from PubMed Central. Conclusion: This scoping review provides a comprehensive assessment of the use of different virtual clinical simulation models in nursing education, these models can improve the knowledge of nursing students and professionals. In general, the use of virtual reality simulation should be considered to enhance knowledge and as a complement to other simulation strategies to improve the quality and safety of clinical practice. However, heterogeneity and risk of bias among included studies must be taken into account. Large-scale rigorously designed studies are needed to further confirm the results of this review

Ein anthropomorphes Phantom zur Evaluation eines chirurgischen Assistenzsystems mit intraoperativer Bildgebung

Zahlreiche chirurgische Assistenzsysteme sind in der klinischen Praxis im Einsatz, um die Genauigkeit und Sicherheit medizinischer Eingriffe zu erhöhen. Die Verwendung von Bildgebungsverfahren durch solche Systeme und die Teilautomatisierung von Prozessen kann einen weiteren Schritt in Richtung höherer Effizienz chirurgischer Interventionen und höherer Patientensicherheit darstellen. Dies stellt jedoch große Herausforderungen an die Systementwickler, welche zur Evaluation dieser Systeme während der Konstruktion geeignete Konzepte und Testmethoden benötigen. Diese Arbeit hat zwei wesentliche Zielsetzungen: Zum einen soll vorgestellt werden, wie zur zielführenden Entwicklung eines duplexsonographisch geführten, semiautomatisch arbeitenden Assistenzsystems zur Gefäßpräparation (ASTMA-System) ein anthropomorphes, physiologisches Phantom anhand zuvor definierter, für die Entwicklung relevanter, Anforderungen konstruiert wurde. Dieses ermöglichte es, die Arbeitsprozesse des Systems und deren Eignung bereits in vitro umfangreich zu testen. Zum andern soll dargestellt werden, wie das Phantom hinsichtlich dieser Anforderungen in einer Studie validiert wurde, um zu gewährleisten, dass dieses für die Systementwicklung erforderliche Eigenschaften aufwies. Dadurch konnten wichtige Informationen über Nutzen und Limitierung der Verwendung des Phantoms und mögliche Probleme des ASTMA-Systems gewonnen werden. Hiermit soll demonstriert werden, wie ein Entwicklungs- und Validierungsansatz für ein Phantom als Testsystem zur Entwicklung und Evaluation ähnlicher komplexer medizintechnischer Systeme mit intraoperativer Bildgebung gestaltet werden kann und welchen Anforderungen solche Phantome genügen sollten. Dies kann dabei helfen, die Systementwicklung zielführend und ressourceneffizient durchzuführen, Probleme bereits während früher Entwicklungsschritte aufzudecken und zu lösen und die Eignung des Verfahrens des entwickelten Systems zu beurteilen