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Minimally Invasive Therapy & Allied Technologies: MITAT

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https://www.readbyqxmd.com/read/28151035/long-term-efficacy-and-safety-of-a-nitinol-closure-clip-system-for-anal-fistula-treatment
#1
Sebastian Dango, Fillimon Antonakis, Dirk Schrader, Arkadiy Radzikhovskiy, Michael B Ghadimi, Rudolf Hesterberg
INTRODUCTION: Treatment failure of anal fistula results in high re-occurrence rate. MATERIAL AND METHODS: Efficacy and safety of a nitinol closure clip system (bear-claw clip) were evaluated for anal fistulae treatment in a 36-month long-term follow-up study. RESULTS: Twenty-two patients were included. No patient had been treated with a bear-claw clip system before. All patients were fully continent before treatment. Follow-up time was 36 months (range 19-48 months)...
February 2, 2017: Minimally Invasive Therapy & Allied Technologies: MITAT
https://www.readbyqxmd.com/read/28151029/radiofrequency-induced-thermotherapy-rfitt-in-a-porcine-liver-model-and-ex-vivo-great-saphenous-vein
#2
George E Badham, Scott J Dos Santos, Mark S Whiteley
AIMS: To investigate the thermal spread achieved in porcine liver when using an optimised radiofrequency ablation protocol and correlate findings with the effects seen in ex vivo great saphenous vein (GSV), in order to justify clinical use with the new treatment protocol. MATERIAL AND METHODS: Porcine liver and GSV sections were treated with radiofrequency-induced thermotherapy (RFiTT) using the following settings: 20 W at 1 s/cm (linear endovenous energy density; LEED 20 J/cm), 18 W at 1 s/cm (LEED 18 J/cm), 18 W at 3 s/cm (LEED 54 J/cm), 6 W interrupted pull-back 6 s stationary every 0...
February 2, 2017: Minimally Invasive Therapy & Allied Technologies: MITAT
https://www.readbyqxmd.com/read/28145160/the-thunderbeat-system-for-tissue-dissection-and-vascular-control-in-laparoscopic-splenectomy
#3
Silvia Ceccanti, Ilaria Falconi, Simone Frediani, Alessandro Boscarelli, Marco Catani, Denis A Cozzi
No abstract text is available yet for this article.
February 1, 2017: Minimally Invasive Therapy & Allied Technologies: MITAT
https://www.readbyqxmd.com/read/28145148/preliminary-experimental-study-on-splenic-hemodynamics-of-radiofrequency-ablation-for-the-spleen
#4
Yasutaka Baba, Sadao Hayashi, Kohei Nagasato, Michiyo Higashi, Takashi Yoshiura
PURPOSE: To test the splenic blood flow change after radiofrequency ablation (RFA) of the spleen in a porcine experimental model. MATERIAL AND METHODS: Six pigs underwent RFA of the spleen via laparotomy. During the procedure of RFA, clamping of splenic artery (one) and both splenic artery/vein (one) was also performed. Measurement of blood flow of both splenic artery (SA) and splenic vein (SV) with flow-wire at pre- and post-RFA of the spleen was also performed...
February 1, 2017: Minimally Invasive Therapy & Allied Technologies: MITAT
https://www.readbyqxmd.com/read/28084155/three-year-postoperative-outcomes-between-mis-and-conventional-tlif-in1-segment-lumbar-disc-herniation
#5
You Lv, Jingyang Chen, Jinchuan Chen, Yuling Wu, Xiangyang Chen, Yi Liu, Zhaoming Chu, Luxin Sheng, Rujie Qin, Ming Chen
AIM: The aim of this study is to assess the long-term clinical and radiological outcomes between minimally invasive (MIS) and conventional transforaminal lumbar interbody fusion (TLIF) in treating one-segment lumbar disc herniation (LDH). MATERIAL AND METHODS: One-hundred and six patients treated by MIS-TLIF (50 cases) or conventional TLIF (56 cases) were included. Perioperative results were evaluated. Clinical outcomes were compared preoperatively and postoperatively...
January 13, 2017: Minimally Invasive Therapy & Allied Technologies: MITAT
https://www.readbyqxmd.com/read/28084143/a-portable-surgical-navigation-device-to-display-resection-planes-for-bone-tumor-surgery
#6
Hyunseok Choi, Yeongkyoon Park, Seongpung Lee, Hogun Ha, Sungmin Kim, Hwan Seong Cho, Jaesung Hong
INTRODUCTION: Surgical navigation has been used in musculoskeletal tumor surgical procedures to improve the precision of tumor resection. Despite the favorable attributes of navigation-assisted surgery, conventional systems do not display the resection margin in real time, and preoperative manual input is required. In addition, navigation systems are often expensive and complex, and this has limited their widespread use. In this study, we propose an augmented reality surgical navigation system that uses a tablet personal computer with no external tracking system...
January 13, 2017: Minimally Invasive Therapy & Allied Technologies: MITAT
https://www.readbyqxmd.com/read/28084141/routine-clinical-application-of-virtual-reality-in-abdominal-surgery
#7
Gianluca Sampogna, Raffaele Pugliese, Marco Elli, Angelo Vanzulli, Antonello Forgione
BACKGROUND: The advantages of 3D reconstruction, immersive virtual reality (VR) and 3D printing in abdominal surgery have been enunciated for many years, but still today their application in routine clinical practice is almost nil. We investigate their feasibility, user appreciation and clinical impact. MATERIAL AND METHODS: Fifteen patients undergoing pancreatic, hepatic or renal surgery were studied realizing a 3D reconstruction of target anatomy. Then, an immersive VR environment was developed to import 3D models, and some details of the 3D scene were printed...
January 13, 2017: Minimally Invasive Therapy & Allied Technologies: MITAT
https://www.readbyqxmd.com/read/28084136/evidence-based-cross-validation-for-acoustic-power-transmission-for-a-novel-treatment-system
#8
Senay Mihcin, Jan Strehlow, Daniel Demedts, Michael Schwenke, Yoav Levy, Andreas Melzer
INTRODUCTION: The novel Trans-Fusimo Treatment System (TTS) is designed to control Magnetic Resonance guided Focused Ultrasound (MRgFUS) therapy to ablate liver tumours under respiratory motion. It is crucial to deliver the acoustic power within tolerance limits for effective liver tumour treatment via MRgFUS. Before application in a clinical setting, evidence of reproducibility and reliability is a must for safe practice. MATERIALS AND METHODS: The TTS software delivers the acoustic power via ExAblate-2100 Conformal Bone System (CBS) transducer...
January 13, 2017: Minimally Invasive Therapy & Allied Technologies: MITAT
https://www.readbyqxmd.com/read/27981866/influence-of-videogames-and-musical-instruments-on-performances-at-a-simulator-for-robotic-surgery
#9
Andrea Moglia, Vittorio Perrone, Vincenzo Ferrari, Luca Morelli, Ugo Boggi, Mauro Ferrari, Franco Mosca, Alfred Cuschieri
OBJECTIVE: To assess if exposure to videogames, musical instrument playing, or both influence the psychomotor skills level, assessed by a virtual reality simulator for robot-assisted surgery (RAS). MATERIALS AND METHODS: A cohort of 57 medical students were recruited: playing musical instruments (group 1), videogames (group 2), both (group 3), and no activity (group 4); all students executed four exercises on a virtual simulator for RAS. RESULTS: Subjects from group 3 achieved the best performances on overall score: 527...
December 16, 2016: Minimally Invasive Therapy & Allied Technologies: MITAT
https://www.readbyqxmd.com/read/27869517/ct-fluoroscopy-guided-percutaneous-drainage-comparison-of-the-one-step-and-the-seldinger-techniques
#10
Kenji Kajiwara, Takuji Yamagami, Masaki Ishikawa, Rika Yoshimatsu, Yasutaka Baba, Yuko Nakamura, Wataru Fukumoto, Kazuo Awai
OBJECTIVE: To evaluate the one step technique compared with the Seldinger technique in computed tomography (CT) fluoroscopy-guided percutaneous drainage of abdominal and pelvic abscess. MATERIAL AND METHODS: Seventy-six consecutive patients (49 men, 27 women; mean age 63.5 years, range 19-87 years) with abdominal and pelvic abscess were included in this study. Drainages were performed with the one step (n = 46) and with the Seldinger (n = 48) technique between September 2012 and June 2014...
December 16, 2016: Minimally Invasive Therapy & Allied Technologies: MITAT
https://www.readbyqxmd.com/read/27869520/outpatient-single-port-laparoscopic-percutaneous-morgagni-hernia-repair-assisted-by-an-optical-forceps
#11
Engin Yilmaz, Cagatay Evrim Afsarlar, Derya Erdogan, Ismet Faruk Ozguner
Morgagni hernia is a relatively rare form of diaphragmatic hernia in the pediatric age group and it is conventionally treated with open surgical repair. Minimal access surgery is currently being adapted for many procedures in children. However, to date just a few techniques have been described relevant to minimal access surgical repair of Morgagni hernia in children. Herein, we report two cases of Morgagni hernia repaired by a new single-port laparoscopic technique assisted by an optical forceps. Two infants, a one-year-old boy and an eight-month-old girl, were operated with this technique in just 26 and 35 min and were discharged with oral analgesic prescription by postoperative hour 5 and 8, respectively...
December 8, 2016: Minimally Invasive Therapy & Allied Technologies: MITAT
https://www.readbyqxmd.com/read/27885870/transanal-total-mesorectal-excision-for-restorative-coloproctectomy-in-an-obese-high-risk-patient-with-colitis-associated-carcinoma
#12
Laura Isabel Hanke, Fabian Bartsch, Sebastian Försch, Florian Heid, Hauke Lang, Werner Kneist
Transanal total mesorectal excision (TaTME) offers great potential for the treatment of malign and benign diseases. However, laparoscopic-assisted TaTME in ulcerative colitis has not been described in more than a handful of patients. We present a 47-year-old highly comorbid female patient with an ulcerative colitis-associated carcinoma of the ascending colon and steroid-refractory pancolitis. A two-stage restorative coloproctectomy including right-sided complete mesocolic excision was conducted. The second step consisted of a successful nerve-sparing TaTME and a handsewn ileal pouch-anal anastomosis...
November 25, 2016: Minimally Invasive Therapy & Allied Technologies: MITAT
https://www.readbyqxmd.com/read/28084101/retrograde-venography-during-balloon-occluded-retrograde-transvenous-obliteration-of-gastric-varices
#13
Rika Yoshimatsu, Takuji Yamagami, Masaki Ishikawa, Kenji Kajiwara, Wataru Fukumoto, Hiroshi Aikata, Kazuaki Chayama, Yasutaka Baba, Kazuo Awai
PURPOSE: The purpose of this study was to evaluate changes in thrombosis in gastric varices. MATERIAL AND METHODS: Fourteen patients were studied who underwent balloon-occluded retrograde transvenous obliteration (B-RTO) for gastric varices with a gastrorenal shunt. The B-RTO catheter was retained overnight in all patients. Balloon-occluded retrograde venography (B-RTV) was performed to evaluate the degree of thrombus formation. This evaluation was done twice during the overnight B-RTO procedure: A few hours after the procedure and on the following day...
February 2017: Minimally Invasive Therapy & Allied Technologies: MITAT
https://www.readbyqxmd.com/read/27686414/feasibility-of-electromagnetically-guided-transjugular-intrahepatic-portosystemic-shunt-procedure
#14
Peter Isfort, Tobias Penzkofer, Christoph Wilkmann, Hong-Sik Na, Christian Kotzlowski, Nobutake Ito, Joachim Georg Pfeffer, Stefan Bisplinghoff, Sabine Osterhues, Andreas Besting, Jorge Gooding, Thomas Schmitz-Rode, Christiane Kuhl, Andreas Horst Mahnken, Philipp Bruners
OBJECTIVES: To develop an electromagnetic navigation technology for transjugular intrahepatic portosystemic shunt (TIPS) creation and translate it from phantom to an in-vivo large animal setting. MATERIAL AND METHODS: A custom-designed device for TIPS creation consisting of a stylet within a 5 French catheter as well as a software prototype were developed that allow real-time tip tracking of both stylet and catheter using an electromagnetic tracking system. Feasibility of navigated TIPSS creation was tested in a phantom by two interventional radiologists (A/B) followed by in-vivo testing evaluation in eight domestic pigs...
February 2017: Minimally Invasive Therapy & Allied Technologies: MITAT
https://www.readbyqxmd.com/read/27659094/technical-aspects-of-transurethral-plasmakinetic-enucleation-and-resection-of-the-prostate-for-benign-prostatic-hyperplasia
#15
Yang Yu, Guantao Lou, Chen Shen, Sheng Guan, Wei Wang, Bo Yang
: TUERP, which is based on TURP, technically has been proven to be safe and effective with reduced complication rates. Due to the lack of systematic pre-clinical training, the surgery is learnt only inside the operative theatre in the majority of the Chinese medical centers. It is also known to have a steep learning curve, and very few articles have addressed the technical aspects of TUERP. MATERIAL AND METHODS: The videos of 91 cases of bipolar transurethral enucleation and resection of the prostate, which were performed by one urological surgeon in our department from August 2013 to January 2016, were retrospectively analyzed...
February 2017: Minimally Invasive Therapy & Allied Technologies: MITAT
https://www.readbyqxmd.com/read/27658978/modular-aortic-valve-prosthesis-for-transcatheter-aortic-valve-implantation-a-novel-concept-with-a-new-implantation-method
#16
Gilberto Melnick, Enio Eduardo Guerios, Guilherme Agreli
Transcatheter aortic valve implantation (TAVI) is a relatively new medical intervention. Research on dedicated TAVI devices is an exciting and dynamic field to be explored by professionals involved in technological innovation. The authors describe in this article the first engineering concept and part of the US Patent of a new valve prosthesis. Divided into two pieces to be separately implanted using a single catheter by means of an innovative technique, this device aims at reducing prosthesis and delivery catheter profile...
February 2017: Minimally Invasive Therapy & Allied Technologies: MITAT
https://www.readbyqxmd.com/read/27616428/a-novel-magnetic-driven-tissue-retraction-device-for-minimally-invasive-surgery
#17
Margherita Brancadoro, Selene Tognarelli, Gastone Ciuti, Arianna Menciassi
INTRODUCTION: The purpose of this work is to design and validate an innovative magnetic-based device for tissue retraction for minimally invasive surgery. MATERIAL AND METHODS: An intra-abdominal magnetic module is coupled with an extracorporeal system for establishing a stable attraction, and consequently a reliable tissue retraction. Once the retractor has been inserted into the abdomen, tissue retraction is not constrained by a fixed access port, thus guaranteeing a more flexible, safer and less invasive operation...
February 2017: Minimally Invasive Therapy & Allied Technologies: MITAT
https://www.readbyqxmd.com/read/27598531/laparoscopic-ligation-of-celiac-trunk-and-splenic-artery-aneurysms-with-function-preservation
#18
Tao Xia, Jia-Yu Zhou, Yi-Ping Mou, Xiao-Wu Xu, Yu-Cheng Zhou, Chao-Jie Huang, Ren-Chao Zhang, Chao Lu, Rong-Gao Chen, Yun-Yun Xu
Celiac trunk aneurysms (CTAs) are rare and usually asymptomatic. Although most of these aneurysms can be treated with percutaneous embolization, some uncommon locations of the aneurysm may make this approach impossible. We report a patient with a celiac trunk aneurysm (CTA) and a proximal splenic artery aneurysm (SAA). Due to the size and location of these two aneurysms, after multidisciplinary discussion, endovascular management was considered inappropriate and they were treated by laparoscopic ligation of the two aneurysms and revascularization...
February 2017: Minimally Invasive Therapy & Allied Technologies: MITAT
https://www.readbyqxmd.com/read/27574900/laparoscopically-assisted-suprapubic-surgery-for-adnexal-tumors-under-epidural-anesthesia
#19
Ki Hyung Kim, Yoon Hwa Kim, Ka Yeong Yun, Si Eun Han, Eun Soo Kim, Byung Su Kwon, Dong Soo Suh
OBJECTIVE: To evaluate the feasibility and safety of laparoscopically assisted surgery for benign ovarian tumors via a single suprapubic incision under epidural anesthesia. METHODS: Forty-three patients underwent laparoscopically assisted surgery via a single suprapubic incision under epidural anesthesia. Types of surgery were classified as follows: type I - suprapubic incision surgery without laparoscopic support, type II - suprapubic incision surgery with laparoscopic support but without CO2 inflation; and type III - suprapubic incision surgery with laparoscopic support and CO2 inflation...
February 2017: Minimally Invasive Therapy & Allied Technologies: MITAT
https://www.readbyqxmd.com/read/27564687/workflow-optimisation-for-multimodal-imaging-procedures-a-case-of-combined-x-ray-and-mri-guided-tace
#20
Fabiola Fernández-Gutiérrez, Malgorzata Wolska-Krawczyk, Arno Buecker, J Graeme Houston, Andreas Melzer
This study presents a framework for workflow optimisation of multimodal image-guided procedures (MIGP) based on discrete event simulation (DES). A case of a combined X-Ray and magnetic resonance image-guided transarterial chemoembolisation (TACE) is presented to illustrate the application of this method. We used a ranking and selection optimisation algorithm to measure the performance of a number of proposed alternatives to improve a current scenario. A DES model was implemented with detail data collected from 59 TACE procedures and durations of magnetic resonance imaging (MRI) diagnostic procedures usually performed in a common MRI suite...
February 2017: Minimally Invasive Therapy & Allied Technologies: MITAT
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