<prompt> In an alaryngeal speech, with fistula based voice prosthesis, which of these prosthesis has the feature of Loading tool with an instantaneous opening of the oesophagal flangeBlom-Singer IndwellingProvox 2Panje voice buttonBlom Singer duckbill  <response>: Alaryngeal speech is a speech made using sources other than the glottis in the larynx to create voiced sound. There are three types: oesophagal, buccal, and pharyngeal speech. In oesophageal tracheoesophageal puncture can be made and utilized Provox2 is a diameter indwelling silicone voice prosthesis that can be inseed, immediately after TE puncture primary or secondary, without the need for temporary stenting. Ref: 