mermaid has it right; the needles that Apryl is using in the vid are specially curved on the end (specific to left- or right-handed use), and are not usual & customary upholstery/quilting needles. I have googled all forms of "Gaven's needle" and Apryl (whatsherface) to no avail.
If they are not available for sale, perhaps a regular curved needle could actually be bent successfully.