Abstract: A voice prosthesis has a tubular body with two ends and an internal through-cavity communicating the ends. There are external widened sections at the two ends, with a valve body at the first end to permit air to flow in only one direction. On an outer surface of the tubular body is an adaptation for sealing the tubular body to a wall of the hole between the esophagus and trachea. The adaptation, in particular, is one or more rings protruding from the outer surface at a position between the two ends. The rings protrude at an angle, causing them to be canted toward the opposite end.

Abstract: A voice prosthesis implantation kit includes a leader element which can be introduced via the mouth into the oesophagus until the leading end or tip of the leader element is located close to the location where the voice prosthesis has to be implanted, at which tip of the leader element a first coupling device is located. The kit also includes a hollow cutting element for making a cut in the wall of the oesophagus at the level of the tracheostome, and a guide element, one end of which carries a second coupling device which, via the hollow cutting element which is located in the cut which has been made, can be brought into interaction with the first coupling device, and the other end of which carries an attachment for a voice prosthesis, which is to be implanted, to the guide element.

Abstract: A voice prosthesis intended for placing in an opening in the wall between the oesophagus and the windpipe, in the case of which the windpipe opens out into the neck by way of a stoma, comprises a tubular element which at one end has an external enlargement, and at the other end has retaining means which are expandable outwards from a contracted position to a spread position, which prosthesis with the retaining means in the contracted position can be fitted by way of the windpipe stoma in such a way that the tubular element goes into the opening and the external enlargement comes to rest against the wall part of the windpipe around said opening, and the retaining means can be fitted against the wall part of the oesophagus around said opening after the tubular element has been placed in said opening.