Radiopaque material for enhanced X-ray attenuation

摘要

A medical device that may be implanted in a patient's body is disclosed. An illustrative medical device has an elongated structure that includes a material loaded with a radiopaque material. The radiopaque material includes radiopaque particles having multiple sets of radiopaque particles. The multiple sets of radiopaque particles may include a first set of radiopaque particles having particles with particle sizes in a first particle size range and a second set of radiopaque particles having particles with particle sizes in a second particle size range. The second set of radiopaque particles may have particles configured to fit within interstitial spaces between particles of the first set of radiopaque particles.

主权项

1. A medical device, comprising:
an elongated structure including a radiopaque material; and wherein:
the radiopaque material comprises a first set of radiopaque particles having a first particle size mode and a second set of radiopaque particles having a second particle size mode that is approximately 10%-35% of the size of the first particle size mode;the first set of radiopaque particles have a particle size distribution in the range of about 6 microns to about 12 microns;the second set of radiopaque particles have a particle size distribution in the range of about 0.7 microns to about 4 microns;the radiopaque material comprises 70%-90% by weight of the first set of radiopaque particles and 10%-30% by weight of the second set of radiopaque particles; andparticle sizes of individual particles of the second set of radiopaque particles are configured such that the individual particles of the second set of radiopaque particles fit in interstitial spaces between individual particles of the first set of radiopaque particles.