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https://www.readbyqxmd.com/read/29338896/novel-bioabsorbable-polymer-and-polymer-free-metallic-drug-eluting-stents
#1
REVIEW
Jason Nogic, Liam M McCormick, Rohin Francis, Nitesh Nerlekar, Catherine Jaworski, Nick E J West, Adam J Brown
The introduction of drug-eluting stents (DES) significantly reduced angiographic restenosis and the clinical need for revascularization following percutaneous coronary intervention. However, concerns remain regarding the long-term safety and efficacy of DES. The use of durable polymers for drug elution that have limited biocompatibility is thought to contribute toward DES failure, by promoting an adverse local inflammatory response and vascular toxicity. Biodegradable polymer and polymer-free metallic stents represent two novel technological solutions to this challenging clinical problem...
January 12, 2018: Journal of Cardiology
https://www.readbyqxmd.com/read/29318008/novel-technique-using-a-bioabsorbable-prosthesis-with-fibrin-glue-fixation-to-prevent-a-petersen-s-space-hernia
#2
Mark Magdy, Hyerim Suh, Vytauras Kuzinkovas
Laparoscopic Roux-en-Y gastric bypass is a bariatric operation that is effective for long-term weight loss. Although rare, one serious complication is an internal hernia through Petersen's space, which may result in bowel strangulation. Although the incidence of internal hernia can be reduced through closing the Petersen's defect, it does not eliminate the risk. This case describes a novel and reliable method to close Petersen's defect. We report the case of a 30-year-old female who underwent a laparoscopic Roux-en-Y gastric bypass for the management of morbid obesity...
December 2017: Journal of Surgical Case Reports
https://www.readbyqxmd.com/read/29299766/patient-perceived-outcomes-after-subtalar-arthroereisis-with-bioabsorbable-implants-for-flexible-flatfoot-in-growing-age-a-4-year-follow-up-study
#3
Cesare Faldini, Antonio Mazzotti, Alessandro Panciera, Valentina Persiani, Francesco Pardo, Fabrizio Perna, Sandro Giannini
PURPOSE: Results of subtalar arthroereisis in flexible flatfoot have been mainly reported in the literature using clinical or radiographical findings. However, the aim of this study is to evaluate the patient-perceived quality of life using self-reported questionnaires after subtalar arthroereisis using a bioabsorbable implant. METHODS: Italian modified FFI and the SEFAS scores were submitted to a consecutive series of 173 patients who underwent surgical treatment for flatfoot deformity using a bioabsorbable endo-orthotic implant...
January 3, 2018: European Journal of Orthopaedic Surgery & Traumatology: Orthopédie Traumatologie
https://www.readbyqxmd.com/read/29287001/optimal-conditions-for-absorbable-fixation-of-hydroxyapatite-ceramic-implants
#4
Yoshiaki Sakamoto, Kazuo Kishi
Synthetic hydroxyapatite (HAP) implants are common in craniofacial surgery; the major problem with HAP implants is fixation instability. An ultrasound-assisted pinned resorbable fixation system has recently been introduced. The authors hypothesized that this resorbable system could be used to fix HAP implants. The authors evaluated the optimal HAP porosity and resorbable pin using the pull-out test and microscopic analysis. Hydroxyapatite blocks were synthesized with 0% (dense type), 35% (fine pore type), and 50% (large pore type) porosity...
January 2018: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/29286961/regeneration-of-a-completely-transected-sciatic-nerve-with-use-of-a-bioabsorbable-nerve-conduit-filled-with-collagen-with-a-14-year-follow-up-a-case-report
#5
Yuji Inada, Keishichirou Moroi, Shigeru Morimoto, Takamitsu Fujikawa, Hiroshige Tateuchi, Tatsuo Nakamura
CASE: A 65-year-old man with a completely transected left sciatic nerve at the buttock received an implant with a bioabsorbable nerve conduit over a 20-mm gap. The conduit was filled with collagen to facilitate nerve regeneration. At 4 years after implantation, reinnervation potentials were detected in the muscles, and there was sensory recovery in the reinnervated areas. Thereafter, motor and sensory function recovered gradually over a 14-year period. CONCLUSION: Mixed nerve regeneration after conduit-based reconstruction was demonstrated objectively...
October 2017: JBJS Case Connector
https://www.readbyqxmd.com/read/29279677/on-the-synthesis-and-characterization-of-%C3%AE-tricalcium-phosphate-scaffolds-coated-with-collagen-or-poly-d-l-lactic-acid-for-alveolar-bone-augmentation
#6
Isadora S Deschamps, Gabriel L Magrin, Ricardo S Magini, Márcio C Fredel, Cesar A M Benfatti, Júlio C M Souza
Objectives: After tooth loss, dimensional alterations on the alveolar bone ridge can occur that can negatively affect the placement of dental implants. The purpose of this study was to evaluate the synthesis, and mechanical properties of β-tricalcium phosphate (β-TCP) scaffolds coated with bioabsorbable polymers, namely, collagen and poly (D, L-lactic acid) (PDLLA). Materials and Methods: β-TCP powder was obtained by reactive milling and then characterized by X-ray diffraction and scanning electron microscopy/energy dispersive X-ray spectroscopy (SEM/EDS)...
October 2017: European Journal of Dentistry
https://www.readbyqxmd.com/read/29278354/long-term-clinical-outcomes-of-a-crystalline-sirolimus-eluting-coronary-stent-with-a-fully-bioabsorbable-polymer-coating-five-year-outcomes-from-the-dessolve-i-and-ii-trials
#7
William Wijns, Mathias Vrolix, Stefan Verheye, Danny Schoors, Ton Slagboom, Marcel Gosselink, Edouard Benit, David Kandzari, Dennis Donohoe, John A Ormiston
AIMS: The aim was to evaluate the five-year clinical results of a sirolimus-eluting stent (MiStent SES) with a bioabsorbable coating designed for sustained drug delivery during and after rapid polymer dissolution. METHODS AND RESULTS: The five-year results from the DESSOLVE I and II trials including major adverse cardiac events (MACE), target lesion failure (TLF), target vessel failure (TVF), and stent thrombosis (ST) at five-year follow-up are reported. In DESSOLVE I, 10...
December 26, 2017: EuroIntervention
https://www.readbyqxmd.com/read/29278215/percutaneous-coronary-intervention-in-the-elderly-are-drug-coated-balloons-the-future
#8
Ioannis Merinopoulos, Tharusha Gunawardena, Upul Wickramarachchi, Alisdair Ryding, Simon Eccleshall, Vassilios S Vassiliou
Balloon angioplasty revolutionised percutaneous treatment for coronary artery disease four decades ago, but vessel-threatening dissections, elastic recoil and restenosis were major drawbacks to an otherwise successful long-lasting intervention. Subsequent advances with bare metal stents and then drug eluting stents followed, aiming to mitigate the risks of acute vessel closure and restenosis. However, stent implantation often necessitates dual antiplatelet therapy for a prolonged period of time, which in itself can lead to adverse outcomes, especially in the frail elderly population at higher risk of bleeding...
December 26, 2017: Current Cardiology Reviews
https://www.readbyqxmd.com/read/29241962/engineering-and-repair-of-diaphragm-using-biosheet-a-collagenous-connective-tissue-membrane-in-rabbits
#9
Keisuke Suzuki, Makoto Komura, Kan Terawaki, Tetsuro Kodaka, Takumi Gohara, Hiroko Komura, Yasuhide Nakayama
BACKGROUND: Prosthetic patches can be used to repair large congenital diaphragmatic hernia defects but may be associated with infection, recurrence, and thoracic deformity. Biosheets (collagenous connective tissue membranes) have been used in regenerative medicine. We evaluated the efficacy of Biosheets in a rabbit model. METHODS: Biosheets were prepared by embedding silicone plates in dorsal subcutaneous pouches of rabbits for 4weeks. In group 1 (n=11), Gore-Tex® sheets (1...
November 21, 2017: Journal of Pediatric Surgery
https://www.readbyqxmd.com/read/29230917/interfacial-nanoprecipitation-toward-stable-and-responsive-microbubbles-and-their-use-as-a-resuscitative-fluid
#10
Yifeng Peng, Raymond Seekell, Alexis Cole, Jemima Lamothe, Andrew Lock, Sarah van den Bosch, Xiaoqi Tang, John Kheir, Brian Polizzotti
We report a new approach to prepare stable microbubbles (MBs) via interfacial nanoprecipitation of bioabsorbable polymers at air/liquid interface. This facile method offers robust control over MBs morphology and chemo-physical properties by simple chemical modifications. This approach is amenable to large-scale manufacturing, and is useful to develop functional MBs for advanced biomedical applications. To demonstrate this, we created a MB-based intravenous oxygen carrier that undergoes pH-triggered self-elimination...
December 11, 2017: Angewandte Chemie
https://www.readbyqxmd.com/read/29226468/peptide-integrated-optics
#11
Amir Handelman, Nadezda Lapshina, Boris Apter, Gil Rosenman
Bio-nanophotonics is a wide field in which advanced optical materials, biomedicine, fundamental optics, and nanotechnology are combined and result in the development of biomedical optical chips. Silk fibers or synthetic bioabsorbable polymers are the main light-guiding components. In this work, an advanced concept of integrated bio-optics is proposed, which is based on bioinspired peptide optical materials exhibiting wide optical transparency, nonlinear and electrooptical properties, and effective passive and active waveguiding...
December 11, 2017: Advanced Materials
https://www.readbyqxmd.com/read/29203070/a-sirolimus-eluting-bioabsorbable-polymer-coated-stent-mistent-versus-an-everolimus-eluting-durable-polymer-stent-xience-after-percutaneous-coronary-intervention-dessolve-iii-a-randomised-single-blind-multicentre-non-inferiority-phase-3-trial
#12
Robbert J de Winter, Yuki Katagiri, Taku Asano, Krzysztof P Milewski, Philipp Lurz, Pawel Buszman, Gillian A J Jessurun, Karel T Koch, Roland P T Troquay, Bas J B Hamer, Ton Oude Ophuis, Jochen Wöhrle, Rafał Wyderka, Guillaume Cayla, Sjoerd H Hofma, Sébastien Levesque, Aleksander Żurakowski, Dieter Fischer, Maciej Kośmider, Pascal Goube, E Karin Arkenbout, Michel Noutsias, Markus W Ferrari, Yoshinobu Onuma, William Wijns, Patrick W Serruys
BACKGROUND: MiStent is a drug-eluting stent with a fully absorbable polymer coating containing and embedding a microcrystalline form of sirolimus into the vessel wall. It was developed to overcome the limitation of current durable polymer drug-eluting stents eluting amorphous sirolimus. The clinical effect of MiStent sirolimus-eluting stent compared with a durable polymer drug-eluting stents has not been investigated in a large randomised trial in an all-comer population. METHODS: We did a randomised, single-blind, multicentre, phase 3 study (DESSOLVE III) at 20 hospitals in Germany, France, Netherlands, and Poland...
December 1, 2017: Lancet
https://www.readbyqxmd.com/read/29187499/anastomotic-leakage-using-linear-stapling-device-with-pre-attached-bioabsorbable-polyglycolic-acid-felt-after-laparoscopic-anterior-resection
#13
Seiichiro Yamamoto, Toshio Kanai, Koji Osumi, Kikuo Yo, Kiminori Takano, Mai Tsutsui, Ryo Nakanishi, Yusuke Yoshikawa, Yasushi Kaneko, Motohito Nakagawa
AIM: Many studies have evaluated the risk factors for anastomotic leakage after laparoscopic anterior resection. In this study in order to increase the tightness of anastomoses and prevent bleeding from their staple lines, a linear stapler with pre-attached bioabsorbable polyglycolic acid (PGA) felt was used for rectal transection, and the short-term surgical outcomes were evaluated. PATIENTS AND METHODS: A prospective registry of 62 patients with rectosigmoidal or rectal carcinoma who initially underwent laparoscopic anterior resection using PGA felt for rectal transection was reviewed...
December 2017: Anticancer Research
https://www.readbyqxmd.com/read/29183531/patterns-of-recurrence-and-mechanisms-of-failure-after-open-ventral-hernia-repair-with-mesh
#14
COMPARATIVE STUDY
Jeremy A Warren, Sean P McGrath, Allyson L Hale, Joseph A Ewing, Alfredo M Carbonell, William S Cobb
Recurrence after ventral hernia repair (VHR) remains a significant complication. We sought to identify the technical aspects of VHR associated with recurrence. Patients who underwent open midline VHR between 2006 and 2013 (n = 261) were retrospectively evaluated. Patients with recurrence (Group 1, n = 48) were compared with those without recurrence (Group 2, n = 213). Smoking, diabetes, and body mass index were not different between groups. More patients in Group 1 underwent clean-contaminated, contaminated, or dirty procedures (43...
November 1, 2017: American Surgeon
https://www.readbyqxmd.com/read/29174422/bioabsorbable-magnesium-versus-standard-titanium-compression-screws-for-fixation-of-distal-metatarsal-osteotomies-3-year-results-of-a-randomized-clinical-trial
#15
Christian Plaass, Christian von Falck, Sarah Ettinger, Lena Sonnow, Franco Calderone, Andreas Weizbauer, Janin Reifenrath, Leif Claassen, Hazibullah Waizy, Kiriakos Daniilidis, Christina Stukenborg-Colsman, Henning Windhagen
BACKGROUND: For the treatment of hallux valgus commonly distal metatarsal osteotomies are performed. Persistent problems due to the hardware and the necessity of hardware removal has led to the development of absorbable implants. To overcome the limitations of formerly used materials for biodegradable implants, recently magnesium has been introduced as a novel implant material. This is the first study showing mid-term clinical and radiological (MRI) data after using magnesium implants for fixation of distal metatarsal osteotomies...
November 23, 2017: Journal of Orthopaedic Science: Official Journal of the Japanese Orthopaedic Association
https://www.readbyqxmd.com/read/29174374/tracheobronchial-stenting-for-airway-malacia
#16
REVIEW
Colin Wallis, Clare A McLaren
Tracheobronchomalacia is a rare but clinically troublesome condition in paediatrics. The softening of the major airways - which can include some or all of the tracheobronchial tree can lead to symptoms ranging from the minor (harsh barking cough, recurrent chest infections) to severe respiratory difficulties including prolonged ventilator support and 'near death attacks'. The causes are broadly divided into intrinsic softening of the airway wall which is considered a primary defect (e.g. syndromes; post tracheo-oesophageal fistula repair; extreme prematurity) or secondary malacia due to external compression from vascular structures or cardiac components...
October 13, 2017: Paediatric Respiratory Reviews
https://www.readbyqxmd.com/read/29174243/evaluation-and-efficacy-of-long-length-pronova-xr-bioabsorbable-polymer-stent-in-the-treatment-of-long-coronary-lesions
#17
M S Hiremath
AIM: The study aims an observational registry of the long and extra-long length (>33mm) Pronova XR stents in patients with long coronary lesions (>30mm) in a prospective real world study. METHODS AND RESULTS: Current study was conducted at Ruby Hall Clinic Pune, between July 2012 and July 2013 including 30 patients who underwent PTCA using long and extra-long Pronova XR stents. Among the stents used, one stent - 33mm, 2 stents - 38mm, 5 stents - 43mm and 25 stents were of 48mm in length...
November 2017: Indian Heart Journal
https://www.readbyqxmd.com/read/29163995/delayed-tibial-osteomyelitis-after-anterior-cruciate-ligament-reconstruction-with-hamstrings-autograft-and-bioabsorbable-interference-screw-a-case-report-and-review-of-the-literature
#18
Kevin S Weiss, Justin M Weatherall, Jen Eick, James R Ross
Osteomyelitis following arthroscopically assisted anterior cruciate ligament (ACL) reconstruction has rarely been reported in the literature. We report a case of a 20-year-old female who had delayed tibial osteomyelitis and a pretibial cyst with culture-positive, oxacillin sensitive Staphylococcus epidermidis 15 months after an ACL reconstruction with hamstring autograft. Soft tissue fixation within the tibial tunnel was with a poly-L-D-lactic acid (PLDLA) bioabsorbable interference screw. The patient underwent surgical treatment with curettage, debridement, hardware removal, and bone grafting of the tibial tunnel followed by a course of intravenous antibiotics...
2017: Case Reports in Orthopedics
https://www.readbyqxmd.com/read/29157898/radiologic-and-clinical-evaluation-of-a-bioabsorbable-collagen-implant-to-treat-partial-thickness-tears-a-prospective-multicenter-study
#19
Theodore F Schlegel, Jeffrey S Abrams, Brandon D Bushnell, J Logan Brock, Charles P Ho
BACKGROUND: Treatment of partial-thickness cuff tears remains controversial. Although conservative therapy may treat symptoms, these defects do not spontaneously heal and conversion to a full-thickness lesion with subsequent repair may alter the tendon footprint. The ability to induce new tissue formation and limit tear progression in intermediate- and high-grade partial-thickness tears without surgical repair may represent a significant advancement in the treatment paradigm for these lesions...
November 17, 2017: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/29148244/real-life-experience-with-bioresorbable-polymer-everolimus-eluting-stents-is-this-an-answer-in-search-of-a-question
#20
EDITORIAL
Youssef Rahban, Carey Kimmelstiel
Stent thrombosis and clinically driven restenosis are rare in the era of newer generation DES. The Synergy bioresorbable polymer DES appears to be comparable to other durable polymer and other bioabsorbable polymer DES in terms of safety and efficacy at 1-year post implantation. Further long-term study is needed to determine the specific role of the Synergy stent and other DES with bioabsorbable polymers.
November 15, 2017: Catheterization and Cardiovascular Interventions
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