Del. Code tit. 25 § 4304
After the filing of the notice as provided in this chapter, no release of any judgment, claim or demand by the injured person shall be valid or effectual as against such lien, and the person making any payment to such injured person or such injured person's legal representative as compensation for the injuries sustained shall for a period of 1 year from the date of such payment remain liable to such hospital for the amount of its reasonable charges due at the time of such payment to the extent of the full and true consideration paid or given to, or on behalf of, such injured person or such injured person's legal representative, and any such charitable association, corporation or other institution or body maintaining such hospital may, within such period, enforce its lien by a suit at law against such person making any such payment.
25 Del. C. § 4304