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Navigating the intricate and narrow vascular pathways of the body remains a formidable challenge in vascular embolization, often limiting the maneuverability and steerability of traditional catheters. This study, by T.T. Xu and co-workers, introduces dual-responsive reconfigurable miniature fiberbots, which are capable of catheter-assisted deployment, navigation, and embolization in vascular systems. Through meticulous design and magnetic control, this work successfully validates a multistage vascular embolization approach in the renal artery of rabbits in vivo. The experiments not only overcome the existing limitations of conventional catheterization techniques but also open new avenues for minimally invasive treatments.
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http://dx.doi.org/10.34133/research.0404 | DOI Listing |
Eur J Case Rep Intern Med
August 2025
Hanoi Heart Hospital, Hanoi, Vietnam.
Background: Perforation of artery causing bleeding is a rare but serious complication of percutaneous coronary intervention (PCI), with potentially life-threatening consequences. Prompt recognition and management are crucial, particularly in high-risk patients or complex procedures. Coils are essential tools for sealing perforated or ruptured vessels, preventing further haemorrhage and stabilising the patient.
View Article and Find Full Text PDFRadiol Case Rep
November 2025
Department of Radiology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya, Aichi 466-8550, Japan.
Congenital intrahepatic portosystemic shunts are uncommon vascular anomalies that can lead to hyperammonemia and liver dysfunction. We report a 48-year-old woman with a large intrahepatic shunt presenting with elevated blood ammonia and progressive hepatic atrophy. She underwent percutaneous coil-in-plug embolization using an Amplatzer Vascular Plug II filled with coils.
View Article and Find Full Text PDFAnat Cell Biol
September 2025
Department of Anatomy, All India Institute of Medical Sciences Bibinagar, Hyderabad, India.
We present a rare anatomical variation of the deep femoral vein (DFV) originating from the popliteal vein (PV) with an associated aneurysm. The DFV arose from the PV at the adductor hiatus, exhibited an aneurysm, and coursed upward through the fourth osseo-aponeurotic opening of the adductor magnus muscle to enter the anterior thigh compartment before draining into the femoral vein. This unique variation likely resulted from developmental deviations during intrauterine life.
View Article and Find Full Text PDFZhonghua Jie He He Hu Xi Za Zhi
September 2025
Department of Respiratory and Critical Care Medicine, the First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China.
Tracheobronchial Dieulafoy's disease (TBDD) is a rare bronchial artery vascular malformation, characterized clinically by sudden, recurrent, and life-threatening massive hemoptysis. This article reports the case of a 9-year-old female patient who presented with massive hemoptysis lasting two weeks. Following ineffective treatment at a local hospital, she was transferred to our institution.
View Article and Find Full Text PDFMed Eng Phys
October 2025
Ansys Inc., Houston, TX 77094, USA.
Introduction: Benchtop and animal models have traditionally been used to study the propagation of Onyx Liquid Embolic Systems (Onyx) used in the treatment of brain arteriovenous malformations (AVM). However, such models are costly, do not provide sufficient detail to elucidate how variations in Onyx viscosity alter flow dynamics, and rely on some trial-and-error, resulting in elongated timelines for product development.
Objectives: The goal of this study was to leverage Computational Fluid Dynamics (CFD) simulations to predict the behavior of different Onyx formulations.