AngioShield Filter Wire
The AngioShield Filter Wire represents a significant advancement in the field of vascular protection. Engineered with precision, this innovative device combines the functionality of an inferior vena cava (IVC) filter with the versatility of a guidewire, offering unparalleled safety and efficacy in the prevention of pulmonary embolism (PE) in high-risk patients.
Device Description
The AngioShield Filter Wire is a tethered IVC filter designed for short-term use. Crafted from a single-piece nitinol wire, the device transitions from a standard 0.035in wire to a coil-shaped filter upon deployment, effectively capturing clots while maintaining blood flow. Its smooth, curved helical contour ensures compatibility with various venous access sites and simplifies retrieval.
Principle of Operation
The AngioShield Filter Wire operates as a retrievable filter, anchored in place by a locking wire clip. Its design facilitates deployment through standard catheters or sheaths, expanding within the IVC to form a barrier against clots. The filter’s atraumatic design and tethered structure allow for safe and straightforward removal, minimizing the risk of complications.
Design Features
The AngioShield Filter Wire incorporates several design enhancements to address common safety and efficacy concerns associated with traditional IVC filters. These include the elimination of structural weak points to reduce fracture risk, the absence of sharp edges to prevent vessel perforation, and the inclusion of a tether to avoid migration. Its coil-shaped filtering mechanism, oriented perpendicular to the vessel wall, boasts a high capture rate for clots of varying sizes.
Figure: Deployed Filter in a Vein
Figure: Filter Coverage Area – AngioShield vs Competitor
Figure: Filter Wire Prototype Simple Retrieval
Figure: Clot Capture Rates – AngioShield Prototypes vs Competitors
Product Specifications
The AngioShield Filter Wire is meticulously designed to meet rigorous clinical demands. It is available in diameters ranging from 15cm to 30cm and accommodates veins from 8cm to 35cm. The filter is deployed from as small as a 4F sheath, in veins as small as the posterior tibial artery at the ankle ensuring a minimally invasive procedure. The nitinol construction offers flexibility and resilience, while the device’s atraumatic nature permits direct removal through small vessels or skin without causing tissue damage.