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Bead Block microspheres are intended to be used for the embolization of hypervascular tumours, including uterine fibroids (UFE) and arteriovenous malformations (AVMs). Bead Block microspheres are also intended for embolization of prostatic arteries (PAE) for symptomatic benign prostatic hyperplasia (BPH).

Bead Block, a permanent intravascular implant, is made up of preformed soft, compressible, biocompatible, hydrophilic, non-resorbable and precisely calibrated microspheres that occlude vessels for the purpose of blocking the blood flow to a target tissue. Bead Block compressible microspheres consist of a macromer derived from polyvinyl alcohol (PVA). The fully polymerized microsphere is approximately 90-95% water and is compressible to approximately 30% by diameter. Bead Block microspheres are dyed blue to aid in the visualization of the microspheres in the delivery syringe. The microspheres can be suspended in contrast agents and delivered through microcatheters to the target location. Bead Block is available in bead sizes from 100 – 1200µm and supplied sterile in 20ml syringes which contain 1 or 2 ml of beads suspended in 6 or 5 ml of phosphate buffered saline, respectively. The different bead sizes of the product are differentiated by differently colored labels and syringe end caps. Bead Block is provided as a single use, non-pyrogenic, sterile (steam sterilized) device.

The HydroPearl® Microspheres are intended for the embolization of arteriovenous malformations and hypervascular tumors, including uterine fibroids, and for embolization of prostatic arteries (PAE) for symptomatic benign prostatic hyperplasia (BPH).

The HydroPearl TM Microspheres are a pre-formed, compressible, precisely calibrated, spherical embolic agent consisting of a biocompatible hydrogel. The HydroPearl TM Microspheres are offered in a variety of diameters ranging from 75-1100µm and are provided in a sterile syringe pre-filled with microspheres in phosphate buffered saline. The pre- filled syringe is packaged in a sealed sterile dispenser tray. The HydroPearl TM Microspheres are delivered to the treatment site through a delivery catheter.

Embozene Microspheres are intended for embolization of arteriovenous malformations and hypervascular tumors, including uterine fibroids (UFE) and hepatoma, and for embolization of prostatic arteries (PAE) for symptomatic benien prostatic hyperplasia (BPH). This device is not intended for neurovascular use.

Embozene™ Color-Advanced Microspheres (hereafter referenced as Embozene or Embozene Microspheres) are spherical, tightly calibrated, biocompatible, hydrogel microspheres coated with proprietary polymer (Polyzene®-F). The microspheres are compressible to enable smooth delivery through the indicated delivery catheter and color-coded by size to allow for easy identification. Microspheres are supplied sterile and packaged in 20 ml syringes with an approximate 7ml fill volume across the range. Embozene microspheres syringes are available in 2 ml microsphere volume for 40 -1300 µm.

Embosphere Microspheres are indicated for use in embolization of arteriovenous malformations, hypervascular tumors, including symptomatic uterine fibroids, and prostatic arteries for symptomatic benign prostatic hyperplasia (BPH).

Embosphere Microspheres are small, compressible, hydrophilic spheres of acrylic polymer and porcine-derived gelatin, provided sterile, non-pyrogenic in 10 saline. They are available in six size ranges (40 um - 1200 um), in svringes (Figure 1) or vials. The syringes contain 1 mL or 2 mL of microspheres in 6 or 7 mL of saline, respectively, in a single unit packaging. Vials contain 1 mL or 2 mL of microspheres in 3 or 4 mL of saline, respectively, in a single unit packaging. The microspheres are delivered to the target site via catheter under fluoroscopic control. The technological characteristics of the subject devices are identical to the legally marketed Embosphere Microspheres (K991549. K021397).