| 摘要 |
PCT No. PCT/NL96/00199 Sec. 371 Date Nov. 10, 1997 Sec. 102(e) Date Nov. 10, 1997 PCT Filed May 8, 1996 PCT Pub. No. WO96/35399 PCT Pub. Date Nov. 14, 1996A 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. The retaining means comprise one or more projections which can be moved between a contracted position essentially in line with the tubular element and a spread position, in such a way that each projection can be gripped by a control unit which can be placed in said cavity, in order to move each projection between the above-mentioned positions. These control elements bear a ball-type valve in an elastic manner. |
