Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 53 for “"Sutures"”.
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Three-dimensional Computed Tomographic Analysis of Normal Developmental Process of Cranial Sutures
최근 삼차원 전산단층촬영이 도입되어 머리뼈조기유합증이나 자세성머리쏠림증과 같은 영유아 머리뼈 이상의 진단에 많이 활용되고 있다. 그러나 진단의 기준이 되는 정상 머리뼈봉합 발달 과정의 삼차원 전산단층사진 소견에 대한 연구는 아직까지 미비한 실정이다. 이에 본 연구는 삼차원 전산단층촬영을 시행한 생후 12개월 이하의 영아 243명을 대상으로 시상봉합, 관상봉합, 시옷봉합 및 이마봉합 등 머리덮개뼈의 주요 봉합과 나비이마봉합, 나비마루봉합, 나비비늘봉합, 비늘봉합, 마루꼭지봉합, 뒤통수꼭지봉합 등 머리덮개뼈의 작은 봉합의 닫힘 과정을 …
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Multiscale modelling of sutures in a high-performing biological protective structure: the turtle shell
… animals including humans, contain networks of sutures; those are, soft tissue that bonds adjacent stiff plates typically made of bone. Such protective structures ought to withstand large loads associated with predator attacks. If one considers the optimization process of evolution and the …
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Knotless bidirectional barbed versus smooth polypropylene three-loop pulley sutures for repair of canine gastrocnemius tendon
… compared to those with a smaller gap. Barbed sutures are a relatively recent entry into the veterinary field. These sutures have found multiple applications in human medicine, including digital flexor tendon repair, as well as gastrointestinal, gynecologic, urologic and cosmetic surgeries. …
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Effects of tendon viscoelasticity on the distribution of forces across sutures in a model tendon-to-bone repair
… These repairs often culminate in re-tearing when sutures break through the tendon in the weeks following repair. Numerous studies have been performed to identify suturing strategies that reduce this risk by balancing forces across sutures. However, the structural engineering basis for these …
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The use of uterine compression sutures in the management of patients with severe postpartum haemorrhage in a regional obstetric hospital
… be relevant to establish if uterine compression sutures are beneficial in a low resource setting for the management of PPH. Accordingly, the aim of the present study was to audit the use of uterine compression suture (UCS) in our regional hospital, with a focus on the circumstances in which it …
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In vitro mechanical evaluation of equine laryngeal tie-forward constructs performed with different suture materials and placement patterns
… vitro LTF constructs to the loads exerted on the sutures tightened to achieve adequate rostral advancement of the larynx in cadaver horses. There was no difference in maximal load at failure between the constructs prepared with polyethylene sutures and the constructs prepared with similarly placed …
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Investigating the biomechanics of a lizard skull using advanced computer modelling techniques with experimental validation
… of skull shape during its evolution. Sutures were modelled and their effect on skull strains was assessed through a series of investigative studies. Finally, representative basal skull forms were examined to highlight potential implications of specific skull variations. To assist in …
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Bordered Sutured Floer Homology
… 𝑌 with connected boundary 𝐹 = 𝛿𝑌 , and sutures 𝚪 ∈ 𝛿𝑌, we can compute the sutured Floer homology 𝑆𝐹𝐻(𝑌) from the bordered invariant 𝐶𝐹𝐴(𝑌)𝐴(𝐹). The chain complex 𝑆𝐹𝐻(𝑌,𝚪) defining 𝑆𝐹𝐻 is quasi-isomorphic to the derived tensor product 𝐶𝐹𝐴(𝑌)x𝐶𝐹𝐷(𝚪) where _𝒜(𝐹) 𝐶𝐹𝐷(𝚪) is a module …
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Cyclic Loading Effects on Craniofacial Strain and Sutural Growth in Pigs
… smaller tensile strain (+660 µɛ). Internasal sutures experienced strain magnitudes <200 µɛ of varying polarity. Generally small (<100 µɛ) tensile and compressive strains were registered at the interfrontal and coronal sutures respectively. Nasal and frontal bone principal strains were also low …
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Aorto-enteric Fistula Following Abdominal Aorta Surgery
… and the bowel, and careful placement of sutures in the vessel anastomosis. If infection of the graft coexists the graft must be excised and the aorta closed by sutures. </p>
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Evaluation System for Craniosynostosis Surgeries with Computer Simulation and Statistical Modelling
… is a pathology in infants when one or more sutures prematurely closed, leading to abnormal skull shape. It has been classified according to the specific suture that has been closed, each of which has a typical skull shape. Surgery is the common treatment to correct the deformed skull shape …
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Plagiocephaly: Developmental and Medical Outcomes
… premature fusion of one or more of the cranial sutures, a condition referred to as craniosynostosis. While children with craniosynostosis may be considered for developmental screening to determine whether they fall at risk for developmental delay, children with plagiocephaly are typically not …
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Device for the mechanization of corneal transplants
… that will automate the placement of a ring of sutures. Such a device will enable ophthalmologists to easily suture transplanted corneas and increase procedural success rates. This thesis develops a method of inserting tiny needles and attached filaments along a curved path by forming the needle …
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Surgical techniques used for closure of perimembranous ventricular septal defects
… and 5.0 polypropylene (Prolene®) pledgetted sutures (n=71). Five patients in Group I had bovine pericardium used and 1 patient's VSD was closed by a direct suture technique. Group II consisted of 93 children operated on between 1995 to 1998, and had their VSDs closed with a 0.6% …
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Spring Mediated Cranioplasty for the Treatment of Craniosynostosis
… by the premature fusion of one or more cranial sutures in the infant skull, resulting in an abnormal shape of the cranium. An effective surgical procedure for treatment of this disorder has been developed and is currently use called "Dynamic Spring Mediated Craniofacial Reshaping." This …
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Attachment of fibrous materials in nature and surgical repair
… Using judiciously and biomimetically chosen sutures and suture spacing may halve the peak stresses that arise at a sutured reattachment of tendon to bone. The dissertation continues with the analysis of python jaws, which present arrays of hooked teeth to hold onto the soft, fibrous tissue of …
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Development of a Tubular Biological Tissue-Engineered Heart Valve with Growth Potential
… and attaching them together using degradable sutures. Extensive hemodynamic testing was performed in order to optimize and verify valve design. The growth potential and in vivo function of a single engineered tube (as a pulmonary artery replacement) and pulmonary heart valve were evaluated in …
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Developing Business AI Implementation Methodology and Proof of Concept ML Models to Improve Suture Quality at Extrusion/Orientation
… value chain of a product family of absorbable sutures. The first goal is to provide an assessment of the driving motivations and structural transformation required for a medical device manufacturer to deploy business artificial intelligence (AI) and evolve into a digital firm. The second goal …
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Relationships of intracranial pressure, cerebrospinal fluid space and head circumference in young children
… HC especially in infant with non- or less closed sutures, and the SDHG related to the ICP in toddler with partial closed cranial sutures. In these results, the HC may be reflected in the ICP at early period with rapidly growing HC, and thickness of the SDHG could be expected from the ICP at period …
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