Early and mid-term durability of surgeon-modified and custom-made fenestrated devices for the treatment of complex aortic pathology

2021 ◽  
Author(s):  
Kostantinos Spanos ◽  
Tilo Kölbel ◽  
Franziska Heidemann ◽  
E. Sebastian Debus ◽  
Fiona Rohlffs ◽  
...  
Keyword(s):  
Aortic Pathology ◽  
Custom Made

Endovascular repair of thoracic aortic pathology with custom-made devices

Surgery ◽  
2005 ◽  
Vol 138 (4) ◽  
pp. 598-605 ◽  
Author(s):  
Brian G. Peterson ◽  
G. Matthew Longo ◽  
Jon S. Matsumura ◽  
Melina R. Kibbe ◽  
Mark D. Morasch ◽  
...  
Keyword(s):  
Endovascular Repair ◽  
Aortic Pathology ◽  
Custom Made

Results From a Nationwide Registry on Scalloped Thoracic Stent-Grafts for Short Landing Zones

2016 ◽  
Vol 24 (1) ◽  
pp. 97-106 ◽  
Author(s):  
Emma van der Weijde ◽  
Olaf J. Bakker ◽  
Ignace F. J. Tielliu ◽  
Clark J. Zeebregts ◽  
Robin H. Heijmen
Keyword(s):  
Stent Graft ◽  
Innominate Artery ◽  
Celiac Trunk ◽  
Stent Grafts ◽  
Conversion To Open Surgery ◽  
Landing Zone ◽  
Early Results ◽  
Aortic Pathology ◽  
Custom Made

Purpose: To report the perioperative results and short-term follow-up of patients treated with scalloped thoracic stent-grafts. Methods: A multicenter registry in the Netherlands captured data on 30 patients (mean age 68 years; 17 men) with thoracic aortic pathology and a short (<20 mm) proximal or distal landing zone who received a custom-made scalloped stent-graft between January 2013 and February 2016. Patients were treated for saccular (n=13) aneurysms, fusiform (n=9) aneurysms, pseudoaneurysms (n=4), or chronic type B dissections (n=4). The scallop was used to preserve flow in the left subclavian artery (LSA) (n=17), left common carotid artery (n=5), innominate artery (n=1), and celiac trunk (n=7). In 7 (23%) patients, the scallop also included the adjacent artery. Results: Technical success was achieved in 28 (93%) patients. In 1 patient, a minor type Ia endoleak was observed intraoperatively, which was no longer visible on computed tomography angiography at 3 months. In another patient, the LSA was unintentionally obstructed due to migration of the stent-graft on deployment. Concomitant carotid-carotid or carotid-subclavian bypass was performed in 4 patients. There was no retrograde type A dissection or conversion to open surgery. In-hospital mortality was 3%, and the perioperative ischemic stroke rate was 3%. At a mean follow-up of 9.7 months (range <1 to 31), 29 of 30 target vessels were patent. Conclusion: The scalloped stent-graft appears to be a safe and relatively simple alternative for the treatment of thoracic aortic lesions with short landing zones. Larger patient series and long-term follow-up are required to confirm these early results.

scholarly journals Single Centre Experience with Anaconda Custom-made Fenestrated Stent Graft in the Endovascular Repair of the Juxtarenal Aneurysms

2019 ◽  
Vol 13 (1) ◽  
pp. 31-36
Author(s):  
Milan Lisy ◽  
Guenay Kalender ◽  
Guido Rouhani ◽  
Matthias Schwarzbach ◽  
Wolf Stelter
Keyword(s):  
Stent Graft ◽  
Covered Stent ◽  
Aortic Aneurysms ◽  
Release Mechanism ◽  
Type I ◽  
Aortic Pathology ◽  
Single Centre Experience ◽  
Custom Made ◽  
Fenestrated Stent Graft ◽  
The Mean

Aim: The fenestrated Anaconda custom-made stent graft is one of the recently widely accepted fenestrated devices for managing complex juxta- and pararenal aortic pathology. This study showed its feasibility for treatment of challenging juxtarenal anatomy of the abdominal aorta. Methods: Over the period of 12 months, 9 patients with juxtarenal aortic aneurysm underwent fenestrated stent graft implantation in our institution. The graft fenestrations were customized on the basis of computerized tomography (CT-Angiography; CTA). Selected visceral ostia were protected with covered balloon-expandable stents after partial stent graft deployment. The perioperative and short term data were collected prospectively. Results: The mean aneurysm diameter was 58.4 mm (range 46-73 mm). The mean infrarenal neck length was 3.5 mm (range 0-7 mm), no patient had a severe (>60°) angulation of proximal neck. 18 fenestration for renal arteries, 1 for SMA and 3 for coeliac´s were treated with Advanta V12 covered stent. All the target vessels were cannulated successfully through fenestrations and all the stent grafts were successfully deployed in patients with no technical issue in the release mechanism. All the patients have undergone 6 month follow-up, no aneurysm related or aneurysm-unrelated deaths were reported. On the CTA scan, 3 of the patients had a weak type IIb endoleak; no type I or Type III endoleak was demonstrated. All target vessels were open without an instance of branch-stent stenosis/occlusion. No reintervention was needed. Conclusion: The usage of custom-made Anaconda fenestrated stent graft for endovascular treatment of juxtarenal aortic aneurysms is feasible with acceptable intermediate-term results.

Feasibility of a custom made retrieval modification in minimally invasive transapical aortic valve implantation

2010 ◽  
Vol 58 (S 01) ◽  
Author(s):  
J Blumenstein ◽  
J Kempfert ◽  
S Lehmann ◽  
A van Linden ◽  
D Merk ◽  
...  
Keyword(s):  
Aortic Valve ◽  
Minimally Invasive ◽  
Custom Made ◽  
Aortic Valve Implantation ◽  
Valve Implantation

Regeneration von Knochendefekten mit computergesteuerter Herstellung von Gerüstträgern

2013 ◽  
Vol 22 (03) ◽  
pp. 180-187 ◽  
Author(s):  
J. Henke ◽  
J. T. Schantz ◽  
D. W. Hutmacher
Keyword(s):  
Tissue Engineering ◽  
Additive Manufacturing ◽  
Custom Made

ZusammenfassungDie Behandlung ausgedehnter Knochen-defekte nach Traumata oder durch Tumoren stellt nach wie vor eine signifikante Heraus-forderung im klinischen Alltag dar. Aufgrund der bestehenden Limitationen aktueller Therapiestandards haben Knochen-Tissue-Engineering (TE)-Verfahren zunehmend an Bedeutung gewonnen. Die Entwicklung von Additive-Manufacturing (AM)-Verfahren hat dabei eine grundlegende Innovation ausgelöst: Durch AM lassen sich dreidimensionale Gerüstträger in einem computergestützten Schichtfür-Schicht-Verfahren aus digitalen 3D-Vorlagen erstellen. Wurden mittels AM zunächst nur Modelle zur haptischen Darstellung knöcherner Pathologika und zur Planung von Operationen hergestellt, so ist es mit der Entwicklung nun möglich, detaillierte Scaffoldstrukturen zur Tissue-Engineering-Anwendung im Knochen zu fabrizieren. Die umfassende Kontrolle der internen Scaffoldstruktur und der äußeren Scaffoldmaße erlaubt eine Custom-made-Anwendung mit auf den individuellen Knochendefekt und die entsprechenden (mechanischen etc.) Anforderungen abgestimmten Konstrukten. Ein zukünftiges Feld ist das automatisierte ultrastrukturelle Design von TE-Konstrukten aus Scaffold-Biomaterialien in Kombination mit lebenden Zellen und biologisch aktiven Wachstumsfaktoren zur Nachbildung natürlicher (knöcherner) Organstrukturen.

Design of spline surface vacuum gripper for pick and place robotic arms

2020 ◽  
Vol 4 (2) ◽  
pp. 48-55
Author(s):  
A. S. Jamaludin ◽  
M. N. M. Razali ◽  
N. Jasman ◽  
A. N. A. Ghafar ◽  
M. A. Hadi
Keyword(s):  
Cycle Time ◽  
Industrial Robot ◽  
Annealing Process ◽  
Vacuum Suction ◽  
Robotic Arms ◽  
Custom Made ◽  
Pick And Place ◽  
Manufacturing Procedure ◽  
Production Flexibility ◽  
The Impact

The gripper is the most important part in an industrial robot. It is related with the environment around the robot. Today, the industrial robot grippers have to be tuned and custom made for each application by engineers, by searching to get the desired repeatability and behaviour. Vacuum suction is one of the grippers in Watch Case Press Production (WCPP) and a mechanism to improve the efficiency of the manufacturing procedure. Pick and place are the important process for the annealing process. Thus, by implementing vacuum suction gripper, the process of pick and place can be improved. The purpose of vacuum gripper other than design vacuum suction mechanism is to compare the effectiveness of vacuum suction gripper with the conventional pick and place gripper. Vacuum suction gripper is a mechanism to transport part and which later sequencing, eliminating and reducing the activities required to complete the process. Throughout this study, the process pick and place became more effective, the impact on the production of annealing process is faster. The vacuum suction gripper can pick all part at the production which will lower the loss of the productivity. In conclusion, vacuum suction gripper reduces the cycle time about 20%. Vacuum suction gripper can help lower the cycle time of a machine and allow more frequent process in order to increase the production flexibility.

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