Development of Experimental and Computational Models to Evaluate the Stability of Aortic Stent Grafts in Motor Vehicle Accidents

2007 ◽  
Author(s):  
Kurosh Darvish ◽  
Mehdi Shafieian ◽  
Vasily Romanov ◽  
Vittorio Rotella ◽  
Michael D. Salvatore ◽  
...  
Keyword(s):  
Stent Graft ◽  
High Speed ◽  
Computational Models ◽  
Motor Vehicle ◽  
Element Model ◽  
Motor Vehicle Accidents ◽  
Stent Grafts ◽  
Vehicle Accidents ◽  
The Stability

A high speed impact system was developed to study the stability of stent grafts in thoracic porcine models in vitro. The experiments were guided by a finite element model of the test setup to identify the conditions that increase the risk of instability of the stent graft. The models showed that at anterior inclination of 45° and average deceleration of 40 G, which represented a frontal crash, the stent graft can move up to 1 mm. The results of this study may be helpful in developing future grafts to withstand shocks experienced in motor vehicle accidents.

Development of an In Vitro Porcine Aorta Model to Study the Stability of Stent Grafts in Motor Vehicle Accidents

2009 ◽  
Vol 131 (4) ◽  
Author(s):  
Kurosh Darvish ◽  
Mehdi Shafieian ◽  
Vasily Romanov ◽  
Vittorio Rotella ◽  
Michael D. Salvatore ◽  
...  
Keyword(s):  
Stent Graft ◽  
Motor Vehicle ◽  
Motor Vehicle Accidents ◽  
Aortic Aneurysms ◽  
Endovascular Stent ◽  
Stent Grafts ◽  
Vehicle Accidents ◽  
Impact System ◽  
The Stability

Endovascular stent grafts for the treatment of thoracic aortic aneurysms have become increasingly utilized and yet their locational stability in moderate chest trauma is unknown. A high speed impact system was developed to study the stability of aortic endovascular stent grafts in vitro. A straight segment of porcine descending aorta with stent graft was constrained in a custom-made transparent urethane casing. The specimen was tested in a novel impact system at an anterior inclination of 45deg and an average deceleration of 55G, which represented a frontal automobile crash. Due to the shock of the impact, which was shown to be below the threshold of aortic injury, the stent graft moved 0.6mm longitudinally. This result was repeatable. The presented experimental model may be helpful in developing future grafts to withstand moderate shocks experienced in motor vehicle accidents or other dynamic loadings of the chest.

Circumferential fracture of the skull base causing craniocervical dislocation

2002 ◽  
Vol 97 (1) ◽  
pp. 118-122 ◽  
Author(s):  
Ganesh Rao ◽  
Adam S. Arthur ◽  
Ronald I. Apfelbaum
Keyword(s):  
High Speed ◽  
Unusual Case ◽  
Motor Vehicle ◽  
Neurological Impairment ◽  
Craniocervical Junction ◽  
Motor Vehicle Accidents ◽  
Review Of The Literature ◽  
Content Type ◽  
Vehicle Accidents ◽  
Fine Print

✓ Fractures of the craniocervical junction are common in victims of high-speed motor vehicle accidents; indeed, injury to this area is often fatal. The authors present the unusual case of a young woman who sustained a circumferential fracture of the craniocervical junction. Despite significant trauma to this area, she suffered remarkably minor neurological impairment and made an excellent recovery. Her injuries, treatment, and outcome, as well as a review of the literature with regard to injuries at the craniocervical junction, are discussed.

scholarly journals Treatment Options for Brachial Plexus Injuries

2014 ◽  
Vol 2014 ◽  
pp. 1-10 ◽  
Author(s):  
Vasileios I. Sakellariou ◽  
Nikolaos K. Badilas ◽  
Nikolaos A. Stavropoulos ◽  
George Mazis ◽  
Helias K. Kotoulas ◽  
...  
Keyword(s):  
Brachial Plexus ◽  
High Speed ◽  
Review Paper ◽  
Motor Vehicle ◽  
Treatment Options ◽  
Motor Vehicle Accidents ◽  
Future Prospects ◽  
Current Management ◽  
Vehicle Accidents ◽  
Conservative And Operative Treatment

The incidence of brachial plexus injuries is rapidly growing due to the increasing number of high-speed motor-vehicle accidents. These are devastating injuries leading to significant functional impairment of the patients. The purpose of this review paper is to present the available options for conservative and operative treatment and discuss the correct timing of intervention. Reported outcomes of current management and future prospects are also analysed.

Pneumopericardium in blunt chest trauma after high-speed motor vehicle accidents

2005 ◽  
Vol 23 (1) ◽  
pp. 83-86 ◽  
Author(s):  
Roland Ladurner ◽  
Lars M. Qvick ◽  
Felix Hohenbleicher ◽  
Klaus K. Hallfeldt ◽  
Wolf Mutschler ◽  
...  
Keyword(s):  
Blunt Chest Trauma ◽  
High Speed ◽  
Chest Trauma ◽  
Motor Vehicle ◽  
Motor Vehicle Accidents ◽  
Vehicle Accidents

Psychological Outcome of Motor Vehicle Accidents

2008 ◽  
Author(s):  
Yoshiharu Kim ◽  
Yutaka Matsuoka ◽  
Ulrich Schnyder ◽  
Sara Freedman ◽  
Robert Ursano
Keyword(s):  
Motor Vehicle ◽  
Motor Vehicle Accidents ◽  
Psychological Outcome ◽  
Vehicle Accidents

Resuscitative endovascular balloon occlusion of the aorta (REBOA) enables operative management of the peripartum trauma patient in hemorrhagic shock

2019 ◽  
Vol 3 (1) ◽  
Author(s):  
Kelvin Allenson ◽  
Laura Moore
Keyword(s):  
Maternal Death ◽  
Motor Vehicle ◽  
Operative Management ◽  
Balloon Occlusion ◽  
Motor Vehicle Accidents ◽  
Gravid Uterus ◽  
Intrauterine Pregnancy ◽  
Vehicle Accidents ◽  
Pelvic Hemorrhage ◽  
Endovascular Balloon Occlusion

Trauma related injury is the leading cause of non-obstetric maternal death.  The gravid uterus is at risk for injury, particularly during motor vehicle accidents.  Resuscitative endovascular balloon occlusion of the aorta (REBOA) is a means of controlling pelvic hemorrhage in the setting of trauma.  We report the use of REBOA in a hemodynamically unstable, multiply-injured young woman with viable intrauterine pregnancy.

LANDSLIDE RISK MANAGEMENT IN THE COASTAL ZONE OF THE KUIBYSHEV RESERVOIR DUE THE DESIGN OF HIGH-SPEED LINE "MOSCOW-KAZAN"

2017 ◽  
Author(s):  
Nikolai Petrov ◽  
Nikolai Petrov ◽  
Inna Nikonorova ◽  
Inna Nikonorova ◽  
Vladimir Mashin ◽  
...  
Keyword(s):  
High Speed ◽  
Computational Models ◽  
Stable State ◽  
Landslide Risk ◽  
Kuibyshev Reservoir ◽  
Stepped Surface ◽  
The Stability ◽  
Landslide Slope ◽  
The Village

High-speed railway "Moscow-Kazan" by the draft crosses the Volga (Kuibyshev reservoir) in Chuvashia region 500 m below the village of New Kushnikovo. The crossing plot is a right-bank landslide slope with a stepped surface. Its height is 80 m; the slope steepness -15-16o. The authors should assess the risk of landslides and recommend anti-landslide measures to ensure the safety of the future bridge. For this landslide factors have been analyzed, slope stability assessment has been performed and recommendations have been suggested. The role of the following factors have been analyzed: 1) hydrologic - erosion and abrasion reservoir and runoff role; 2) lithologyc (the presence of Urzhum and Northern Dvina horizons of plastically deformable rocks, displacement areas); 3) hydrogeological (the role of perched, ground and interstratal water); 4) geomorphological (presence of the elemental composition of sliding systems and their structure in the relief); 5) exogeodynamic (cycles and stages of landslide systems development, mechanisms and relationship between landslide tiers of different generations and blocks contained in tiers). As a result 6-7 computational models at each of the three engineering-geological sections were made. The stability was evaluated by the method “of the leaning slope”. It is proved that the slope is in a very stable state and requires the following measures: 1) unloading (truncation) of active heads blocks of landslide tiers) and the edge of the plateau, 2) regulation of the surface and groundwater flow, 3) concrete dam, if necessary.

Sign in / Sign up

Export Citation Format

Share Document