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https://www.readbyqxmd.com/read/28227686/novel-modular-2-dof-microsurgical-forceps-for-transoral-laser-microsurgeries-ergonomic-design-and-preliminary-evaluation
#1
Manish Chauhan, Giacinto Barresi, Nikhil Deshpande, Darwin G Caldwell, Leonardo S Mattos, Manish Chauhan, Giacinto Barresi, Nikhil Deshpande, Darwin G Caldwell, Leonardo S Mattos, Darwin G Caldwell, Giacinto Barresi, Leonardo S Mattos, Nikhil Deshpande, Manish Chauhan
Transoral Laser Microsurgeries (TLM) demand a great level of control and precision in intraoperative tissue manipulation. The optimal eradication of the diseased tissue is possible only with coordinated control of the laser aiming for incision and the microsurgical tools for orienting and stretching the tissue. However, the traditional microsurgical tools are long, single purpose, one degree-of-freedom (DOF), rigid tools with small range of motion and a normal grasping handle inducing non-ergonomic usage. This paper presents a novel, modular microsurgical tool to overcome the challenges of the traditional tools and improve the surgeon-tool usage experience...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227672/robot-assisted-microsurgical-forceps-with-haptic-feedback-for-transoral-laser-microsurgery
#2
Nikhil Deshpande, Manish Chauhan, Claudio Pacchierotti, Domenico Prattichizzo, Darwin G Caldwell, Leonardo S Mattos, Nikhil Deshpande, Manish Chauhan, Claudio Pacchierotti, Domenico Prattichizzo, Darwin G Caldwell, Leonardo S Mattos, Darwin G Caldwell, Leonardo S Mattos, Nikhil Deshpande, Domenico Prattichizzo, Manish Chauhan, Claudio Pacchierotti
In this paper, a novel, motorized, multi-degrees-of-freedom (DoF), microsurgical forceps tool is presented, which is based on a master-slave teleoperation architecture. The slave device is a 7-DoF manipulator with: (i) 6-DoF positioning and orientation, (ii) 1 open/close gripper DoF; and (iii) an integrated force/torque sensor for tissue grip-force measurement. The master device is a 7-DoF haptic interface which teleoperates the slave device, and provides haptic feedback in its gripper interface. The combination of the device and the surgeon interface replaces the manual, hand-held device providing easy-to-use and ergonomic tissue control, simplifying the surgical tasks...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227353/low-resolution-tool-tracking-for-microsurgical-training-in-a-simulated-environment
#3
Antonio Carlos Furtado, Irene Cheng, Eric Fung, Bin Zheng, Anup Basu, Antonio Carlos Furtado, Irene Cheng, Eric Fung, Bin Zheng, Anup Basu, Anup Basu, Eric Fung, Antonio Carlos Furtado, Irene Cheng, Bin Zheng
In this work, we propose a method that detects and tracks the tip of tools used in microsurgical training. This method can be used to provide valuable metrics regarding the surgeon's hand movement. It can benefit the training of surgeons, given the steep learning curve in microsurgery. Unlike past research, our tool tracking algorithm does not rely on color based measurements. Thus, it can be used in a broader domain. Also, our approach is robust to surrounding environments with non-static background, where background subtraction techniques are not suitable...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28226849/investigation-of-the-ca-2-response-of-human-hnt-astrocytes-to-laser-removal-of-cellular-processes
#4
Brad J Raos, E Scott Graham, Charles P Unsworth, Brad J Raos, E Scott Graham, Charles P Unsworth, Charles P Unsworth, Brad J Raos, E Scott Graham
We demonstrate, for the first time, UV laser ablative microsurgery as a method for pruning astrocytic processes from live hNT astrocytic networks in vitro. Calcium fluorescence imaging was used to evaluate the cellular response to process ablation. The results showed that ablation of astrocyte processes induced an immediate increase in intracellular calcium level which propagated through the cells cytoplasm as a wave originating from the ablation site. The increased intracellular calcium dissipated from the body of the cell but remained high in the vicinity of the ablation site...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28215341/dissection-and-characterization-of-microtubule-bundles-in-the-mitotic-spindle-using-femtosecond-laser-ablation
#5
R Buđa, K Vukušić, I M Tolić
The mitotic spindle is a highly organized and dynamic structure required for segregation of the genetic material into two daughter cells. Although most of the individual players involved in building the spindle have been characterized in vitro, a general understanding of how all of the spindle players act together in vivo is still missing. Hence, in recent years, experiments have focused on introducing mechanical perturbations of the spindle on a micron scale, thereby providing insight into its function and organization, as well as into forces acting in the spindle...
2017: Methods in Cell Biology
https://www.readbyqxmd.com/read/28198794/open-tibia-shaft-fractures-and-soft-tissue-coverage-the-effects-of-management-by-an-orthopedic-trauma-microsurgical-team
#6
James VandenBerg, Daniel Osei, Martin I Boyer, Michael J Gardner, William M Ricci, Amanda Spraggs-Hughes, Christopher McAndrew
OBJECTIVES: To compare the timing of soft-tissue (flap) coverage and occurrence of complications before and after the establishment of an integrated orthopedic trauma/microsurgical team. DESIGN: Retrospective Cohort StudySETTING:: A single level 1 trauma centerPATIENTS:: 28 subjects (13 pre- and 15 post-integration) with open tibia shaft fractures (OTA/AO 42A, 42B, 42C) treated with flap coverage between January 2009 and March 2015. INTERVENTION: Flap coverage for open tibia shaft fractures treated before ("pre-integration") and after ("post-integration") implementation of an integrated orthopedic trauma/microsurgical team...
February 11, 2017: Journal of Orthopaedic Trauma
https://www.readbyqxmd.com/read/28193302/outcomes-of-transoral-laser-microsurgical-management-of-t1b-stage-glottic-cancer
#7
J A Song, M H Rigby, J Trites, R D Hart, S M Taylor
OBJECTIVE: This study aimed to evaluate the oncological and voice outcomes of transoral laser microsurgery for tumour stage T1b stage glottic cancer patients. METHODS: A prospective cohort study in a tertiary care head and neck cancer centre included tumour-node-metastasis stage T1bN0M0 glottic cancer patients scheduled to undergo transoral laser microsurgery from January 2002 until June 2014. Kaplan-Meier five-year analyses of local control, overall survival, disease-specific survival and laryngeal preservation were performed...
February 14, 2017: Journal of Laryngology and Otology
https://www.readbyqxmd.com/read/28190450/transoral-laser-microsurgery-as-standard-approach-to-hypopharyngeal-cancer-survival-analysis-in-a-hospital-based-population
#8
Eduardo Breda, Raquel Catarino, Eurico Monteiro
OBJECTIVE: Cancer of the hypopharynx remains one of the most challenging chapters in head and neck oncology. The objective of this study is to ascertain the relevance of a transoral laser approach as a valid functional option for treatment of cancer of the hypopharynx in Portugal, and additionally, to confirm the reproducibility of survival and functional outcomes described in other reference centers. SUBJECTS AND METHODS: The outcomes of 37 out of 60 patients presenting hypopharyngeal carcinoma primarily treated by TLM (transoral laser microsurgery) and neck dissection and or adjuvant treatment when needed, with curative intention in tertiary referral center, were retrospectively evaluated and compared with published results...
February 10, 2017: Acta Otorrinolaringológica Española
https://www.readbyqxmd.com/read/28185974/direct-comparison-of-gamma-knife-radiosurgery-and-microsurgery-for-small-size-meningiomas
#9
Shyamal C Bir, Devi Prasad Patra, Tanmoy Kumar Maiti, Papireddy Bollam, Alireza Minagar, Anil Nanda
INTRODUCTION: A patient with a small (<3cm) intracranial meningioma can be either observed or treated. Treatment can be either radiosurgery or microsurgery if and when progression of the tumor occurs. We have compared the local tumor growth control and recurrence-free survival (RFS) of microsurgical resection and radiosurgery in small intracranial meningiomas, and we have identified the predictors of unfavorable outcome. MATERIALS AND METHODS: Retrospective review (2005-2016) of 90 consecutive patients with intracranial meningiomas who underwent either microsurgery (n=31) or gamma knife radiosurgery (GKRS, n=59) was done...
February 6, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28183544/magnesium-sulfate-accelerates-the-onset-of-low-dose-rocuronium-in-patients-undergoing-laryngeal-microsurgery
#10
Eun-Su Choi, Woo-Jin Jeong, Soon-Hyun Ahn, Ah-Young Oh, Young-Tae Jeon, Sang-Hwan Do
STUDY OBJECTIVE: We evaluated the effect of magnesium sulfate-an enhancer of neuromuscular blockade-on onset and duration of low dose of rocuronium, and on operating conditions during laryngeal microsurgery. DESIGN: Randomized, prospective, double-blinded study. PATIENTS: Eighty-four patients scheduled for elective laryngeal microsurgery. INTERVENTIONS: Patients were randomly allocated to receive different doses of rocuronium: 0...
February 2017: Journal of Clinical Anesthesia
https://www.readbyqxmd.com/read/28177337/free-flap-loss-caused-by-heparin-induced-thrombocytopenia-and-thrombosis-hitt-a-case-report-and-literature-review
#11
E Segna, A R Bolzoni, C Baserga, A Baj
Heparin-induced thrombocytopenia and thrombosis (HITT) represents a dramatic condition that is difficult to diagnose because of nuanced clinical presentation. Therefore, in every case of microvascular thrombosis during heparin-therapy prompt suspicion about HITT is necessary to avoid flap necrosis. We present a case of HITT which, as the 8 other articles reviewed, clearly shows that HITT is difficult to diagnose and complex to manage. Microvascular reconstruction is the first choice in head and neck reconstruction; unfortunately, dramatic outcomes in free flap surgery due to unpredictable thrombotic events are still reported in the English literature...
December 2016: Acta Otorhinolaryngologica Italica
https://www.readbyqxmd.com/read/28177327/functional-outcomes-of-supraglottic-squamous-cell-carcinoma-treated-by-transoral-laser-microsurgery-compared-with-horizontal-supraglottic-laryngectomy-in-patients-younger-and-older-than-65-years
#12
C M Chiesa Estomba, F A Betances Reinoso, A I Lorenzo Lorenzo, J L Fariña Conde, J Araujo Nores, C Santidrian Hidalgo
The treatment of supraglottic carcinoma remains a controversial issue. Five accepted surgical and non-surgical oncological treatments have been currently established: standard horizontal supraglottic laryngectomy (HSL), supraglottic CO2 laser microsurgery (TLM), transoral robotic surgery, radiotherapy alone and radiotherapy in combination with chemotherapy. Some studies have shown that complications of head and neck surgeries increase significantly in patients over 65 years compared to younger patients. We designed a retrospective analysis to assess the rate of complications and functional outcomes of patients treated by TLM and HSL in cases of T1-T3 supraglottic squamous cell carcinomas (SCC) in a tertiary University Hospital...
December 2016: Acta Otorhinolaryngologica Italica
https://www.readbyqxmd.com/read/28175374/115%C3%A2-the-southwestern-aneurysm-scoring-index-prediction-of-outcomes-at-1-year-in-ruptured-aneurysms-treated-with-microsurgery
#13
Vin Shen Ban, Jeffrey S Beecher, Christopher S Eddleman, Salah G Aoun, Kristopher Allen Lyon, Tarek Youssef El Ahmadieh, Cameron Michael McDougall, Babu Guai Welch, Joan Reisch, H Hunt Batjer, Duke S Samson, Jonathan A White
No abstract text is available yet for this article.
August 1, 2016: Neurosurgery
https://www.readbyqxmd.com/read/28161793/frankfurt-microsurgery-course-the-first-175-trainees
#14
G Perez-Abadia, M Janko, L Pindur, M Sauerbier, J H Barker, I Joshua, I Marzi, J Frank
INTRODUCTION: Microsurgery courses, taught external to surgical training programs, are essential for acquiring the high level of technical skill required for clinical proficiency. METHODS: The Frankfurt microsurgery course is a 5-day, intensive course that teaches arterial and venous anastomosis using end-to-end, end-to-side, one-way-up, continuous-suture, and vessel graft techniques. During the course, the instructor records the level of skill (in-course data) achieved by each trainee by assessing anastomosis completion and patency...
February 4, 2017: European Journal of Trauma and Emergency Surgery: Official Publication of the European Trauma Society
https://www.readbyqxmd.com/read/28161208/acquisition-of-basic-microsurgery-skills-using-home-based-simulation-training-a%C3%A2-randomised-control-study
#15
Mohsan M Malik, Nadine Hachach-Haram, Muaaz Tahir, Musab Al-Musabi, Dhalia Masud, Pari-Naz Mohanna
INTRODUCTION: Acquisition of fine motor skills required in microsurgery can be challenging in the current training system. Therefore, there is an increased demand for novel training and assessment methods to optimise learning outside the clinical setting. Here, we present a randomised control trial of three microsurgical training models, namely laboratory tabletop training microscope (Laboratory Microscope, LM), low-cost jewellers microscope (Home Microscope, HM) and iPad trainer (Home Tablet, HT)...
January 9, 2017: Journal of Plastic, Reconstructive & Aesthetic Surgery: JPRAS
https://www.readbyqxmd.com/read/28156245/multimodal-treatment-of-parasagittal-meningiomas-a-single-center-experience
#16
Brigitte Gatterbauer, Sinan Gevsek, Romana Höftberger, Carola Lütgendorf-Caucig, Adolf Ertl, Ammar Mallouhi, Klaus Kitz, Engelbert Knosp, Josa M Frischer
OBJECTIVE Treatment of parasagittal meningiomas is still considered a challenge in modern microsurgery. The use of microsurgical resection, radiosurgery, or a microsurgery-radiosurgery combination treatment strategy is often debated. The aim of this study was to evaluate the treatment of parasagittal meningioma and provide evidence that a multimodal approach reduces complication rates and achieves good tumor control rates. METHODS The authors retrospectively reviewed long-term follow-up data on 117 patients who had been treated for parasagittal meningiomas at their institution between 1993 and 2013...
February 3, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/28154767/subglottic-metastatic-rectal-adenocarcinoma-a-specialist-multidisciplinary-airway-team-approach-for-optimized-voice-and-airway-outcome
#17
Richard Heyes, Ramkishan Balakumar, Krishan Ramdoo, Taran Tatla
A 56-year-old female with a background of metastatic rectal adenocarcinoma presented with a subglottic mass causing biphasic stridor. Transoral laser microsurgery and the use of fibrin glue prevented the need for tracheostomy. Six months postoperatively there was no evidence of recurrence. Laryngeal metastasis of colorectal adenocarcinoma, although remarkably rare, is perhaps more prevalent than commonly perceived and the presence of laryngeal symptoms in a patient with colorectal adenocarcinoma should raise concern...
2017: Case Reports in Otolaryngology
https://www.readbyqxmd.com/read/28153626/contralateral-interlaminar-keyhole-percutaneous-endoscopic-surgery-in-patients-with-unilateral-radiculopathy-technical-notes
#18
Jae Ha Hwang, Cheul Woong Park
OBJECTIVE: Percutaneous endoscopic surgery is increasingly used as an alternative to open microsurgery for treating lumbar spinal diseases. The purpose of this study was to determine the feasibility and efficacy of contralateral keyhole endoscopic surgery (CKES) for treating unilateral radiculopathy. METHODS: We performed percutaneous endoscopic sublaminar decompression via the contralateral interlaminar approach in 14 patients with unilateral radiculopathy. All procedures were performed under epidural anesthesia...
January 30, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28149255/treatment-of-an-acute-deep-hand-burn-in-a-lowincome-country-with-no-available-microsurgery-a-case-report
#19
K S Amouzou, A El Harti, T E Kouevi-Koko, A Abalo, A Dossim
Deep hand burns usually lead to joint and tendon exposure. A simple skin graft is insufficient to achieve healing. Soft tissue reconstruction represents a surgical challenge that ranges from the simplest to the most complex flaps. In some areas, microsurgery is not technically possible. Choice is then limited to pedicled distant flaps such as the abdominal wall flap-graft. We report a case of an acute burned hand with exposure of metacarpophalangeal joints from the second to the fourth radius as well as proximal inter phalangeal joints from the second to the fifth radius and extensor tendons, treated in the burns and wound care unit of the Sylvanus Olympio Teaching Hospital in Lomé...
September 30, 2016: Annals of Burns and Fire Disasters
https://www.readbyqxmd.com/read/28139285/guided-modern-endodontic-surgery-a-novel-approach-for-guided-osteotomy-and-root-resection
#20
Georg D Strbac, Albrecht Schnappauf, Katharina Giannis, Andreas Moritz, Christian Ulm
INTRODUCTION: Continuous improvements in techniques, instruments, and materials have established modern endodontic microsurgery as a state-of-the-art treatment method. The purpose of this approach was to introduce a new surgical endodontic technique by using a three-dimensional printed template for guided osteotomy and root resection. METHODS: A 38-year-old patient was diagnosed with periapical lesions of teeth #3 and #4 and extruded gutta-percha material. Three-dimensional radiographic and optical scan files were imported into surgical planning software designed for guided implant surgery...
January 28, 2017: Journal of Endodontics
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