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Synthetic Mesh

Mubbshir Saleem, Maria Cristina Lavagnolo, Giuseppe Concheri, Piergiorgio Stevanato, Andrea Squartini, Alessandro Spagni
This study investigated a novel bioreactor configuration coupled with a side-stream dynamic membrane (DM) for Anammox enrichment as an alternative for conventional membrane. Bioreactor was fed with synthetic feed and seeded with a mix of anaerobic and aerobic sludge. In situ mechanical cleaning was employed for DM cleaning. DM development and performance was analysed over two polyamide-nylon meshes (200 and 52 µm). Solid-liquid separation of 52 µm mesh outperformed 200 µm with an average effluent turbidity of 2...
July 4, 2018: Bioresource Technology
Haider Jan, Vishalli Ghai, Ranee Thakar
STUDY OBJECTIVE: Laparoscopic colposuspension for recurrent stress incontinence following failed tension-free vaginal tape (TVT) DESIGN: Technical video demonstrating laparoscopic colposuspension for previously surgically treated stress incontinence (Canadian Task force classification level III). SETTING: University Hospital. INTERVENTION: 58-year old woman with a previous TVT presents with recurrent stress urinary incontinence. DISCUSSION: Mid-urethral slings (MUS) have equivalent cure rates to the more invasive colposuspension...
July 10, 2018: Journal of Minimally Invasive Gynecology
Koichi Teramura, Yusuke Watanabe, Shintaro Takeuchi, Fumitaka Nakamura, Satoshi Hirano
INTRODUCTION: Perineal hernia after abdominoperineal resection (APR) is a rare complication, and no standard surgical procedures are established. We describe a simple laparoscopic mesh implantation technique utilizing a large synthetic flat mesh. PRESENTATION OF CASE: We report a case of perineal hernia after APR. We performed laparoscopic repair using a soft and large synthetic mesh with simple technique. The essence of this technique is that mesh is inserted into the abdominal cavity without trimming and it forms in a conical shape to better adjust to the pelvic cavity...
June 28, 2018: International Journal of Surgery Case Reports
Golnoosh Samei, Orcun Goksel, Julio Lobo, Omid Mohareri, Peter Black, Robert Rohling, Septimiu Salcudean
We present a novel technique for real-time deformable registration of 3D to 2.5D transrectal ultrasound (TRUS) images for image-guided, robot-assisted laparoscopic radical prostatectomy (RALRP). For RALRP, a pre-operatively acquired 3D TRUS image is registered to thin-volumes comprised of consecutive intra-operative 2D TRUS images (2.5D), where the optimal transformation is found using a gradient descent method based on analytical first and second order derivatives. Our method relies on an efficient algorithm for real-time extraction of arbitrary slices from a 3D image deformed given a discrete mesh representation...
February 28, 2018: IEEE Transactions on Medical Imaging
Ali Rahmatpour, Niloofar Goodarzi, Maryam Moazzez
Cross-linked polymer beads with different cross-linking agent loading were prepared by carrying out cross-linking suspension copolymerization of styrene-divinylbenzene (St- DVB) monomers using guar gum (GG) and xanthan gum (XG) from bioresources as eco-friendly suspension biopolymer stabilizers in the presence of non reactive diluents. The effects of GG and XG as suspension biostabilizers on the characteristics of the styrene copolymer beads were investigated regarding thermal properties, porosity characteristics, solvent swelling ratio, and surface morphologies using TGA, DSC, XRD, SEM, BET analyses...
2018: Designed Monomers and Polymers
Bernard T Haylen, Joseph K S Lee, Vasukhi Sivagnanam, Angela Cross
It is possible that the controversy involving prostheses implanted into women with pelvic floor problems might result in the majority of, or even all such products being restricted, banned or withdrawn in certain jurisdictions. A clear distinction between "tapes" for urinary incontinence and "mesh" for prolapse has been made in the enquiries and subsequent rulings in Australia and New Zealand. Transvaginal "mesh" will be unavailable with the range of "tapes" much more restricted in those countries from January 2018...
July 4, 2018: Neurourology and Urodynamics
Soykan Arikan, Mehmet Baki Dogan, Ahmet Kocakusak, Feyzullah Ersoz, Serkan Sari, Yigit Duzkoylu, Ali Emre Nayci, Emre Ozoran, Emine Tozan, Turkan Dubus
A Morgagni's hernia is a congenital defect found in the anterior aspect of the diaphragm between the costal and the sternal portions of this muscle. This defect is also referred to as the space of Larrey. It has been reported that 70% of patients with Morgagni's hernia are female, 90% of the hernias are right-sided, and 92% of the hernias have hernia sacs. This type of hernia is a rare clinical entity and accounts for 3% of all surgically treated diaphragmatic hernias. There are no large retrospective or prospective studies on this topic...
June 2018: Indian Journal of Surgery
William Coral, Claudio Rossi, Oscar M Curet, Diego Castro
In this paper we present a fish-like underwater robot inspired by the black bass fish. This robot is composed by a deformable structure and muscle-like linear actuators based on shape memory alloys wires. Such actuators are used to bend a continuous structure representing the backbone of the fish. The prototype is also equipped with a bio-inspired synthetic skin made of Liquid Silicone Rubber and Lycra Microfiber Mesh. We present the mechatronics of the prototype and its control scheme, which take advantage of flex sensors for proprioception...
July 3, 2018: Bioinspiration & Biomimetics
Connie Wang, Philippe E Zimmern, Gary Lemack
OBJECTIVE: This study reports on the long-term results of transurethral endoscopic excision using the Holmium laser (TEEH) for large urethral perforation (UP; defined as involving one-quarter or more of the urethral circumference) from synthetic slings. METHODS: Charts of women treated with TEEH for large UP were reviewed. TEEH was performed using a 365-μm laser fiber passed inside an open-ended ureteral catheter positioned in a holmium laser enucleation of the prostate (HoLEP) sheath to stabilize the laser fiber...
June 28, 2018: Lower Urinary Tract Symptoms
Andrea Lazzati, Georges Bou Nassif, Luca Paolino
This study is a review on the management of ventral hernia during bariatric surgery. The main outcomes are the recurrence rate after ventral hernia repair and the incidence of prosthetic infection. Eleven studies were included. Ventral hernias were treated by simple suture (n = 191), synthetic mesh (n = 186), and biological mesh (n = 72). Mean defect size was 18 cm2 . Recurrence rate was 25.7% in the suture group, 14.3% in the biomesh group, and 1.1% in the synthetic mesh group (p < 0.05)...
June 27, 2018: Obesity Surgery
Kelsey G DeFrates, Robert Moore, Julia Borgesi, Guowei Lin, Thomas Mulderig, Vince Beachley, Xiao Hu
Fibrous materials have garnered much interest in the field of biomedical engineering due to their high surface-area-to-volume ratio, porosity, and tunability. Specifically, in the field of tissue engineering, fiber meshes have been used to create biomimetic nanostructures that allow for cell attachment, migration, and proliferation, to promote tissue regeneration and wound healing, as well as controllable drug delivery. In addition to the properties of conventional, synthetic polymer fibers, fibers made from natural polymers, such as proteins, can exhibit enhanced biocompatibility, bioactivity, and biodegradability...
June 22, 2018: Nanomaterials
Jammula S Srinivas, Prakash Panagatla, Mukunda Reddy Damalacheru
Introduction: Reconstruction of complex abdominal wall defects is both challenging and technically demanding for plastic surgeon. Objectives in abdominal wall reconstruction are consistent and include restoration of abdominal wall integrity, protection of intra abdominal viscera and prevention of herniation. Materials: We conducted a retrospective study on five patients in whom lateral thigh flaps such as anterolateral thigh (ALT) flaps and tensor fascia lata (TFL) myocutaneous flaps as pedicled or free flaps were used for complex abdominal wall Type II defects over a 5- years period between 2007 and 2012...
January 2018: Indian Journal of Plastic Surgery: Official Publication of the Association of Plastic Surgeons of India
Stefano Siboni, Emanuele Asti, Pamela Milito, Gianluca Bonitta, Andrea Sironi, Alberto Aiolfi, Luigi Bonavina
BACKGROUND: Laparoscopic surgery has proven safe and effective in the treatment of large hiatus hernia. Differences may exist between objectively assessed surgical outcomes, symptomatic scores, and patient-reported outcomes. METHODS: An observational, single-arm cohort study was conducted in patients undergoing primary laparoscopic repair with crura mesh augmentation and Toupet fundoplication for large (> 50% of intrathoracic stomach) type III-IV hiatus hernia...
June 20, 2018: Digestive Surgery
David M Adelman, Kevin G Cornwell
Background: Both synthetic and bioprosthetic meshes play important roles in surgical procedures such as ventral hernia repair. Although sometimes used interchangeably, these devices have inherently different properties. We therefore sought to better understand how these materials interact with the host environment to optimize surgical techniques and to improve outcomes. Methods: Synthetic mesh (polypropylene, Prolene) or bioprosthetic mesh (acellular fetal/neonatal bovine dermis, SurgiMend) was implanted intraperitoneally into rats lateral to a ventral incision in a novel intra-abdominal implant model...
May 2018: Plastic and Reconstructive Surgery. Global Open
Julia Pajorova, Marketa Bacakova, Jana Musilkova, Antonin Broz, Daniel Hadraba, Frantisek Lopot, Lucie Bacakova
Background: Our study focuses on the fabrication of appropriate scaffolds for skin wound healing. This research brings valuable insights into the molecular mechanisms of adhesion, proliferation, and control of cell behavior through the extracellular matrix represented by synthetic biodegradable nanofibrous membranes coated by biomolecules. Methods: Nanofibrous polylactic acid (PLA) membranes were prepared by a needle-less electrospinning technology. These membranes were coated with fibrin according to two preparation protocols, and additionally they were coated with fibronectin in order to increase the cell affinity for colonizing the PLA membranes...
2018: International Journal of Nanomedicine
Katherine Chapin, Ahmad Khalifa, Thomas Mbimba, Phillip McClellan, James Anderson, Yuri Novitsky, Adonis Hijaz, Ozan Akkus
Meshes woven from highly aligned collagen threads crosslinked using either genipin or 1-ethyl-3-(3-dimethylaminopropyl) carboiimide and N-hydroxy succinimide (EDC/NHS) were implanted in a subcutaneous rat model to evaluate their biocompatibility (at 2 weeks, 2 months, and 5 months), mechanical properties (at baseline, 2 months, and 5 months) and ultimately their suitability for use as mid-urethral slings (MUS) for management of stress urinary incontinence. Porcine dermal (Xenmatrix) and monofilament polypropylene (Prolene) meshes were also implanted to provide comparison to clinically used materials...
June 13, 2018: Journal of Biomedical Materials Research. Part B, Applied Biomaterials
Abdul Rehman, Abdul Majeed Maliyakkal, Vamanjore A Naushad, Hisham Allam, Ahmed M Suliman
A Bochdalek hernia is a congenital diaphragmatic hernia that results from a failure of closure of the pleuroperitoneal folds during embryologic development. While it is most often diagnosed in neonates and infants, Bochdalek hernias can rarely present in adulthood for the first time. We describe the case of a 42-year-old lady who presented with sudden onset of severe abdominal pain following a Zumba dance session. Her chest radiograph showed an elevated left hemi-diaphragm with visualization of a gastric bubble in the thorax...
April 5, 2018: Curēus
Håkan Hallberg, Richard Lewin, Anna Elander, Emma Hansson
In recent years, it has become increasingly popular to use matrices, such as acellular dermal matrices, in implant-based breast reconstruction. To lower the cost and to avoid implanting biological material, the use of synthetic meshes has been proposed. This is the first study examining TIGR® Mesh in a larger series of immediate breast reconstruction. The aims of the study were to examine complications and predictors for complications. All consecutive patients operated on with breast reconstruction with TIGR® Matrix Surgical Mesh and tissue expanders (TEs) or permanent implant between March 2015 and September 2016 in our department were prospectively included...
June 7, 2018: Journal of Plastic Surgery and Hand Surgery
Manuel López-Cano, Lidia A Martin-Dominguez, José Antonio Pereira, Manuel Armengol-Carrasco, Josep M García-Alamino
BACKGROUND: Primary ventral hernia (PVH) and incisional hernia (IH) repair using a mesh appears to reduce hernia recurrence. However, are the benefits of mesh offset in part by mesh-related complications? The aim of this study was to compare placement of a mesh versus simple suture for recurrence and postoperative complications in the repair of PVH or IH. METHODS: Five databases were searched for randomized controlled trials (RCTs). The study population was patients with a PVH or IH undergoing hernia repair...
2018: PloS One
M Němec, L Horčička, M Dibonová, M Krčmář, I Urbánková, L Krofta, J Feyereisl
OBJECTIVE: The aim of the study is to analyse the musculo-fascial component of the pelvic floor in symptomatic group of woman with pelvic organ prolapse before planned vaginal reconstruction using synthetic vaginal mesh. DESIGN: Observational cohort study. SETTING: Department of Obstetrics and Gynaecology, Hospital in Frýdek-Místek; GONA Ltd, Prague; Institute for Care of Mother and Child, Prague; 3rd Faculty of Medicine CHU Prague. METHODOLOGY: The study involved 285 female volunteers (6 nulliparous, all other patients gave birth vaginally at least once) that in the period 2008-2015 before the planned reconstructive vaginal operations have undergone a comprehensive urogynaecology examination supplemented by magnetic resonance imaging (MRI) of the pelvic floor...
December 0: Ceská Gynekologie
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