Background MRI-guidance of cardiovascular catheterization procedures potentially offers an ionizing radiation-free alternative to X-Ray guidance. Imaging methods allowing visualization of commercially available passive guidewires would facilitate MRI-guided interventions. Previous work has demonstrated that positive contrast of paramagnetic materials, such as nitinol, can be generated with deph...

Japanese nickel titanium (NiTi) alloy wire possesses excellent spring-back properties, shape memory and super-elasticity. In order to adapt this wire to clinical use, it is necessary to bend as well as to control its super-elastic force, and so a direct electric resistance heat treatment (DERHT) method was developed. An electric current is passed directly through the wire, thus generating enoug...

Carval syndrome is a severe heartworm infection where the worms have migrated to the right atrium and vena cava; this condition is associated with a myriad of clinical signs. Several non-surgical and interventional methods are currently used for mechanical worm removal. However, the success rate and complications related to these methods are heavily dependent on methodology and retrieval device...

The growing endoscopic activity, both diagnostic and therapeutic, are also globally makes frequent endoscopic complications, perforation being one of the most serious. However, we also have more possibilities for endoscopic resolution of iatrogenic caused. We report the case of a sigmoid perforation during a colonoscopy that was resolved satisfactorily, avoiding surgery, by endoscopic closure w...

BACKGROUND Management of patients with acquired heart malformations, including aortic valve disease, is still challenging. Due to ageing of population, patients undergoing valve surgery are older than in the past. The 3F Therapeutics, conducting a programme of construction of heart valves for transarterial or transapical implatation, prepared the 'Enable' bioprosthetic valve for sutureless inse...

Shape memory alloys are functional materials characterized by the effect of shape and superelasticity. Due to these properties, they widely used, particularly, in bioengineering, aeronautics, robotics civil engineering. The temperatures phase transformations influence external temperature strain rate on mechanical characteristics Ni55.75Ti44.15 alloy investigated this paper. is obtained differe...