Spanish to English Law/Patents Insurance Insurance policy for medical supply company

The context in which this term appears is a lengthy presentation of hypothetical scenarios over the course of two closely printed pages of an insurance policy for a medical supply company. These hypothetical scenarios are designed to clarify to which insurer a claim should be presented in particular circumstances in which it might seem plausible that two different insurers could be asked to honor a given claim. Thus:

Si el hecho dañoso se produjo cuando su contrato se active sobre la base del hecho dañoso, es pues su asegurador en la fecha de que se produjo el hecho dañoso quien debe tratar las reclamaciones.

[I've reposted this query because there were no responses to my posting late last night (EST), and I assume by now has simply "fallen off the home page" of most persons responding to Kudoz in Spanish-to-English.]

Any help appreciated here. Many thanks!