725 research outputs found
Robotic surgery: current controversies and future expectations
No full textLa miniaturizacio ́n de las herramientas y la realidad aumentada
nos ayudara ́n a realizar una amplia gama de procedimientos
de manera ma ́ s ra ́pida y segura. El potencial de formacio ́n de
sistemas robo ́ ticos como el da Vinci Si podrı ́a cambiar el modo
tradicional en que se ha ensen ̃ ado cirugı ́a en las u ́ ltimas
de ́cadas
Comacchio (FE): geoarcheologia delle bonifiche tra l’alto medioevo e il Novecento
No full textBonifiche antiche e recenti nel sito di Villaggio San Francesco a Comacchio (FE
Handling and Docking of the Da Vinci Surgical Robot Using Mixed Reality
No full textMinimally invasive surgery has improved because
of the additional functionality and dexterity offered by the Da
Vinci robot in handling surgical instruments. However, surgeons
and medical staff face significant challenges in handling, setting
up, and docking the device, especially in the case of new surgical
rooms with different sizes and different specialists. This study
aims to provide a time-saving solution for handling and docking
the Da Vinci robot in operating rooms and to find out which place
is best by projecting its 3D model in the desired space through
Microsoft HoloLens 2. In particular, the idea is to provide the
surgical team with prior spatial awareness for robot handling.
Thus, avoiding interference with obstacles, and planning the
optimal path for handling and docking the real robot. The robot’s
3D model was properly positioned on the floor avoiding nearby
obstructions, with the exact dimension of the real system (height:
175.3 cm, length: 127 cm, width: 91.5 cm). In this early study, we
evaluated the efficacy of the system to reconstruct the barriers
in the real that are constraints for the robot movements and its
usability in the managing of the robot virtual replica
The Pottesman Collection in the British Museum. Early Dynastic and Sargonic administrative texts. With an Appendix on a Palmyrene Inscription
No full textEdizione, trascrizione, traduzione e commento di un frammento di iscrizione palmirena inedita presente nella collezione Pottesman del British Museum (Appendice Agostini).The British Museum houses a small collection of six cuneiform tablets and a Palmyrene dedicatory inscription purchased in 1987 from the private collection of Solomon Pottesman. The aim of the present contribution is to provide a catalog of this lot and an edition of the so far unpublished cuneiform texts. In the appendix, Alessio Agostini added the edition of the Palmyrene inscription, which would have otherwise gone beyond the capabilities of the present author
Overcoming the challenges of single-incision cholecystectomy with robotic single-site technology
No full textOBJECTIVE:
To analyze the preliminary experience with the new da Vinci single-site technology for cholecystectomy.
HYPOTHESIS:
Single-incision laparoscopic cholecystectomy is technically challenging and a related learning curve clearly exists. A novel approved robotic single-port platform has recently been introduced. This technology may help overcome some of the limitations of manual single-incision surgery relating to triangulation of instruments, ergonomics, and surgical exposure.
DESIGN:
A prospective longitudinal observational study was conducted on 100 consecutive da Vinci single-site cholecystectomies.
SETTING:
Five Italian centers of robotic general surgery.
MAIN OUTCOME MEASURES:
Primary end points were feasibility without conversion and the absence of major complications. Operative times were analyzed to define the learning curve using a mixed regression model.A questionnaire collected the opinions of the surgeons involved in using the new technique.
RESULTS:
Two patients underwent conversion. No major intraoperative complications occurred, but there were 12 minor incidents (7 ruptures of the gallbladder and 5 cases of minor bleeding from the gallbladder bed). Mean (SD) total operative time was 71 (19) minutes, with a mean (SD) console time of 32 (13) minutes. No significant reduction in the operative times was observed with the increasing of each surgeon's experience. The technique was judged more complex than standard 4-port laparoscopy but easier than single-incision laparoscopy.
CONCLUSIONS:
Da Vinci single-site cholecystectomy is an easy and safe procedure for expert robotic surgeons. It allows the quick overcoming of the learning curve typical of single-incision laparoscopic surgery and may potentially increase the safety of this approach
Recensione di Cecilia Falchini (2023). Ruperto di deutz - Un’intima familiarità. Antologia, Edizioni Qiqajon (Comunità di Bose), Magnano (Bi), 281 pp.
No full textReview of Cecilia Falchini (2023). Ruperto di deutz - Un’intima familiarità. Antologia, Edizioni Qiqajon (Comunità di Bose), Magnano (Bi), 281 pp.
Author: Alessio MagogaRecensione di Cecilia Falchini (2023). Ruperto di deutz - Un’intima familiarità. Antologia, Edizioni Qiqajon (Comunità di Bose), Magnano (Bi), 281 pp.
Autor: Alessio Magog
Sistemi robotici in chirurgia generale: valutazione critica
No full textLa chirurgia robotica assistita da computer viene proposta e utilizzata come chirurgia minimamente invasiva per interventi che richiedono una elevata precisione, in particolare interventi su campo di piccole dimensioni per i quali la fase ricostruttiva dell’intervento ricopre una particolare importanza.
La tecnologia, per quanto già piuttosto diffusa, è ancora ad uno stadio precoce e gli studi clinici condotti fino ad oggi - principalmente serie di casi finalizzati a valutarne sicurezza e fattibilità - non forniscono informazioni conclusive sulla sua efficacia clinica.
Si è tuttavia ritenuto necessario effettuare una valutazione critica di questa tecnologia sanitaria innovativa e all’avanguardia, cercando di individuare quali sono gli interventi che più di altri possono beneficiare dei sistemi robotici.
La dissertazione si apre con un excursus sulle principali tecnologie robotiche introdotte in campo chirurgico negli ultimi anni, in modo da comprendere quale sia il terreno scientifico e clinico su cui si inserisce il sistema robotico Da Vinci che, ad oggi, rappresenta il modello di riferimento in ambito di ingegneria robotica applicata alla chirurgia.
Il corpo della tesi si sviluppa poi in due macroaree. La prima di queste è focalizzata sulle attuali applicazioni del sistema robotico Da Vinci presso l’U.O. Chirurgia Generale I Universitaria dell’AOUP, confrontando i risultati ricavati da più di un anno di attività chirurgica (Maggio ‘08 – Agosto ‘09) con casistiche internazionali di pari livello. Vengono inoltre presentati i dati preliminari ricavati da una indagine conoscitiva svolta tra chirurghi generali e di specialità con lo scopo di individuare quali sono i limiti degli attuali sistemi robotici in commercio e ottenere dati utili per indirizzare al meglio gli sforzi in ambito di ricerca biomedicale.
Nella seconda parte della tesi si cercherà poi di delineare quali sono le prospettive future della robotica chirurgica, dalle tecnologie di più recente introduzione nella pratica clinica, a quelle in fase di studio e progettazione.
La chirurgia robotica ha le potenzialità di dare al paziente minore invasività e maggiore sicurezza, e di ridare al chirurgo quella intuitività e destrezza propri della chirurgia open e mancanti nella chirurgia laparoscopica. Per tali motivi, la chirurgia robotica non può e non deve essere considerata come un semplice fenomeno commerciale ma deve essere interpretata come parte di quella rivoluzione in ambito chirurgico cominciata venti anni fa con l’introduzione della laparoscopia
Handheld-Impedance-Measurement System with seven-decade capability and potentiostatic function
No full textThis paper describes design and test of a new impedance-measurement system for nonlinear devices that exhibits a seven-decade range and works down to a frequency of 0.01 Hz. The system is specifically designed for electrochemical measurements, but the proposed architecture can be employed in many other fields where flexible signal generation and analysis are required. The system employs an unconventional signal generator based on two pulsewidth modulation (PWM) oscillators and an autocalibration system that allows uncertainties of less than 3% to be obtained over a range of 1 kΩ to 100 GΩ. A synchronous demodulation processing allows the noise superimposed to the low-amplitude input signals to be made negligibl
A retrospective preliminary histomorphometric and clinical investigation on sinus augmentation using enzyme-deantigenic, collagen-preserving equine bone granules and plasma rich in growth factors
No full textAbstract Background Enzyme-deantigenic equine bone (EDEB) is a substitute of autogenous bone. Mixing it with plasma rich in growth factors (PRGF) seems a viable option to achieve enhanced bone formation in alveolar bone augmentation surgeries. This retrospective study aims to first report the histomorphometric and clinical outcomes achieved when using the EDEB/PRGF mixture for performing sinus augmentation procedures followed by delayed implant placement. Materials and methods Records of 11 patients who underwent 14 sinus augmentation surgeries using EDEB/PRGF followed by delayed implant placement were retrospectively collected and analyzed to assess histomorphometric data concerning newly formed bone (NFB) and residual biomaterial (RB) recorded at implant placement, marginal bone loss (MBL) values of implants placed in the augmented sinuses, and implant and prosthetic success and survival rates. Results At 5.6 ± 1.1 months after grafting, NFB and RB were 34.0 ± 9.1% and 11.3 ± 2.2% respectively, and no histologic signs of inflammation or immune reaction were observed in any of the 34 bone biopsies being collected. Further, 86.5 ± 4.3 months after implant placement, MBL was 0.40 ± 0.07 mm. No implant or prosthesis failed, and the implant success and survival rates were 100% Conclusions Within the limitations of the present study, grafting EDEB/PRGF for lateral sinus augmentation and delayed implant placement seems to be safe. Compared to published data concerning EDEB alone, results of the present study do not suggest that the EDEB/PRGF combination may provide a histomorphometric or medium-/long-term clinical advantage
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