1,721,014 research outputs found
Technical features of the INCRAFT (R) AAA Stent Graft System
No full textThe INCRAFT (R) AAA Stent Graft System is the advanced endovascular aneurysm repair (EVAR) technology for the treatment of infrarenal abdominal aneurysms. This new system is designed to address the unmet needs of current endografts by combining unique features and adding new refinements compared to existing endografts delivered through a flexible 14-Fr ultralow system. The INCRAFT (R) AAA Stent Graft System introduces innovative features without deviating from proven stent-graft design principles. It is a three-piece modular system, made of low porosity polyester and segmented nitinol stents. However, the introduction of cap-free delivery and partial proximal repositioning enhances the ability of the device to better match individual aortoiliac anatomy with a high deliverability and placement accuracy in a easy to use system. Moreover, the INCRAFT (R) System allows a "customization" of the implant during the procedure with bilateral in-situ length adjustment features. The present data from the ongoing clinical trials confirm excellent results with this system, but postmarket studies will be necessary to verify the effectiveness of this system in the real-world setting
The Bolton Treovance endograft: Single center experience
No full textAim: In the last two decades, results of endovascular aortic repair (EVAR) for the treatment of infrarenal abdominal aortic aneurysms (AAAs) have significantly improved thanks to the evolution of stent-grafts and endovascular delivery systems. However, further development is still needed to reduce the incidence of complications and secondary reinterventions. We present our initial experience with the Treovance abdominal aortic stent-graft (Bolton Medical, Barcelona, Spain), a new-generation trimodular endovascular device, developed to increase flexibility, lower profile, improve deployment and sealing mechanisms. Methods: We treated 8 patients with anatomically suitable non-ruptured AAA. Results: Primary technical success was obtained in all patients, and no 30-day device-related complications nor deaths were reported. One patient experienced graft limb occlusion at 3 months, and underwent surgical conversion. At 1-year follow-up (completed in 6 patients), no device-related complications nor type I or III endoleak were observed. Conclusion: Initial personal experience with the Treovance abdominal stent-graft was satisfactory with regard to technical success and short-term clinical results. This new-generation endovascular device performed well even in angulated or heavily calcified anatomies
Initial Clinical Experience With the Modified Zenith “Pro-Form” TX2 Thoracic Endograft
No full textPurpose: To assess the safety and efficacy of thoracic aortic endovascular repair (TEVAR) with the newly introduced Zenith TX2 thoracic stent-graft with Pro-Form. Methods: From March 2009 to present, the Zenith TX2 with Pro-Form was used to treat 27 patients (23 men; median age 65 years, range 22-77) suffering from descending thoracic aortic disease: 20 degenerative aneurysms, 3 chronic type B dissections, 2 type I endoleaks following previous endograft repair, 1 aortic ulcer, and 1 traumatic isthmic rupture. According to Ishimaru's classification, the distribution of the proximal landing zone was zone 0 in 4 cases, zone 1 in 2 cases, zone 2 in 9 cases, zone 3 in 7 cases, and zone 4 in 5 cases. One aneurysm distally involved the thoracoabdominal aorta. An acutely angulated (<90°) proximal landing zone was found in 9 patients. Results: The device was safely and effectively deployed in all cases, with no problems during sheath retrieval. The postoperative course was free from major complications in all cases, and there was no perioperative mortality. Postoperative morbidity included respiratory failure in 1 case, transient acute renal failure in 3 cases, and post-implantation syndrome in 2 cases. Postoperative computed tomography at 1 and 6 months confirmed 100% clinical success with the absence of device-related complications. No type I endoleak was documented. The proximal sealing stent fitted well with the aortic profile in all cases except one, in which malapposition was seen in a severely angulated aorta at 6-month follow-up. Conclusion: Based on this preliminary experience, the TX2 thoracic stent-graft with Pro-Form can be safely and effectively deployed to satisfactorily repair thoracic aortic pathology, including lesions in the arch. Stent-graft conformance to the aorta was excellent even in cases with unfavorable anatomy. These encouraging results will need to be confirmed in larger series with larger follow-u
Technical features of the INCRAFT AAA Stent Graft System
No full textThe INCRAFT® AAA Stent Graft System is the advanced endovascular aneurysm repair (EVAR) technology for the treatment of infrarenal abdominal aneurysms.This new system is designed to address the unmet needs of current endografts by combining unique features and adding new refinements compared to existing endografts delivered through a flexible 14-Fr ultra-low system. The INCRAFT® AAA Stent Graft System introduces innovative features without deviating from proven stent-graft design principles. It is a three-piece modular system, made of low porosity polyester and segmented nitinol stents. However, the introduction of cap-free delivery and partial proximal repositioning enhances the ability of the device to better match individual aortoiliac anatomy with a high deliverability and placement accuracy in a easy to use system. Moreover, the INCRAFT® System allows a "customization" of the implant during the procedure with bilateral in-situ length adjustment features. The present data from the ongoing clinical trials confirm excellent results with this system, but postmarket studies will be necessary to verify the effectiveness of this system in the real-world setting
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
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