Shape memory polymer ovarian vein embolisation in a patient with nickel allergy.

CVIR Endovasc

Department of Interventional Radiology and Neuroradiology, San Giovanni Bosco Hospital, Piazza del Donatore di Sangue, 3, 10154, Turin, Italy.

Published: March 2021

Background: Ovarian vein embolization in pelvic varicocele is usually obtained using nitinol coils. These devices can not be used in patients with proven nickel allergy.

Case Presentation: Shape memory polymer is a new embolic material available to interventionalists. A patient presented with pelvic congestion syndrome requiring embolisation of the left ovarian vein. The target vessel consisted of two twisted branches, each 5-6 mm in diameter. The patient also had a known allergy to nickel. Considering the anatomy and allergy status, embolisation with polyurethane shape memory polymer vascular plugs was considered a good case strategy. The embolisation procedure was technically successful with the deployment of two shape memory polymer plugs into each of the two left ovarian vein branches. Follow-up magnetic resonance imaging at 4 months showed sustained occlusion of the treated vessels and the patient showed no signs of allergy to the implanted material.

Conclusions: In conclusion, our case presented an opportunity to utilise a new embolic material and achieve a good outcome in a patient with an allergy that may have resulted in complications when using metallic implants.

Download full-text PDF

Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7925783PMC
http://dx.doi.org/10.1186/s42155-021-00212-yDOI Listing

Publication Analysis

Top Keywords

shape memory
16
memory polymer
16
ovarian vein
16
embolic material
8
left ovarian
8
patient allergy
8
patient
5
allergy
5
shape
4
polymer
4

Similar Publications

Fabrication of a micropatterned shape-memory polymer patch with L-DOPA for tendon regeneration.

Biomater Sci

January 2025

Department of Nanobiomedical Science & BK21 FOUR micropatterned shape-memory NBM Global Research Center for Regenerative Medicine, Dankook University, Cheonan 31116, Republic of Korea.

A scaffold design for tendon regeneration has been proposed, which mimics the microstructural features of tendons and provides appropriate mechanical properties. We synthesized a temperature-triggered shape-memory polymer (SMP) using the ring-opening polymerization of polycaprolactone (PCL) with polyethylene glycol (PEG) as a macroinitiator. We fabricated a micropatterned patch using SMP capillary force lithography, which mimicked a native tendon, for providing physical cues and guiding effects.

View Article and Find Full Text PDF

A nutritious diet is crucial for good health and cognitive function, including working memory (WM). Nutrients like omega-3 fatty acids, antioxidants, and vitamins found in whole foods have been linked to improved WM. Examining the impact of dietary habits on WM in women, who face hormonal and health-related challenges, is important.

View Article and Find Full Text PDF

Poly(lactic acid) (PLA) exhibits excellent shape memory properties but suffers from brittleness and a high glass transition temperature (T), limiting its utility in flexible and durable applications. This study explored the modification of PLA properties through the incorporation of poly(ethylene glycol) (PEG), varying in both content (5-20 wt%) and molecular weight (4000-12,000 g/mol), to enhance its suitability for specific applications, such as medical splints. The PLA/PEG blend, containing 15 wt% PEG and with a molecular weight of 12,000 g/mol, exhibited superior shape fixity (99.

View Article and Find Full Text PDF

Microstructure and Thermal Cyclic Behavior of FeNiCoAlTaB High-Entropy Alloy.

Materials (Basel)

January 2025

Department of Materials Science and Engineering, National Taiwan University, Taipei 10617, Taiwan.

This study investigates the grain morphology, microstructure, magnetic properties and shape memory properties of an FeNiCoAlTaB (at%) high-entropy alloy (HEA) cold-rolled to 98%. The EBSD results show that the texture intensities of the samples annealed at 1300 °C for 0.5 or 1 h are 2.

View Article and Find Full Text PDF

The use of scaffolds for osteochondral tissue regeneration requires an appropriate selection of materials and manufacturing techniques that provide the basis for supporting both cartilage and bone tissue formation. As scaffolds are designed to replicate a part of the replaced tissue and ensure cell growth and differentiation, implantable materials have to meet various biological requirements, e.g.

View Article and Find Full Text PDF

Want AI Summaries of new PubMed Abstracts delivered to your In-box?

Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!