Convert PDF to RTF in Delphi Application

I need to convert a PDF file to an RTF file in a DELPHI application.
Actually, I need to parse a PDF file and I thought that convert PDF to
RTF would be a good way to be able to parse the content of the PDF
file. I don't care about the fomarting of the PDF, I just want to
extract some words.
I saw the SaveAsRtf.api in the acrobate Plug-in but I couldn't use it
in Delphi.

Any help on this point would be more than welcome !

Thank you !