Israel’s STS Medical has received regulatory clearance from the US FDA for its composite sinus stent. Following nasal surgery (e.g. on sinusitis and allergic rhinitis sufferers where other treatments have not worked) the stent keeps the nasal airways open to allow the sinus tissue to heal.
https://www.timesofisrael.com/israeli-startup-gets-fda-nod-for-stent-to-help-sinusitis-sufferers/