Hyaluronic Acid-based Gel

**Semantic type:** Biomedical or Dental Material

**Definition:** A sterile, biodegradable hydrogel containing non-animal stabilized hyaluronic acid (HA) that can be used as a rectal spacer. Upon injection into the perirectal space, the HA-based gel provides distance between the rectum and the prostate, pushes the rectum away from the prostate, and may protect the rectum by moving it out of the radiation beam exposure prior to radiation therapy. This decreases the amount of radiation received by the rectum and may decrease prostate radiation side effects.

**Synonyms:** - Barrigel - HA-based Gel - NASHA-based Gel - Non-Animal Stabilized Hyaluronic Acid-based Gel