Healing ring
From The Stargate Omnipedia
Technology similar in shape to the weather control ring, but with an ability to heal. The device can only be used by individuals who are (or have been) possessed by a Symbiote. The ring may be more sophisticated than a Goa'uld healing device, and therefore may heal wounds quicker.
KEY EPISODE
Prometheus Unbound - After Vala fires a micro plasma burst at Daniel's shoulder out of anger, she quickly heals him with a healing ring.