Disposable LMA
View Patent ↗The disclosed method for fabricating low cost laryngeal mask devices includes providing a mold, the mold including interior walls that define a hollow interior volume. The interior volume includes a first portion and a second portion. A liquid plastic material is introduced into the mold, and then the mold is moved so as to coat the mold's interior walls. The liquid plastic material and then allowed to cure. The cured plastic material is then removed from the mold and the cured plastic material includes a generally elliptically shaped plate and a cuff. The cuff is formed from plastic material that coated the portion of the interior walls that defined the first portion. The plate defines a laryngeal side, a pharyngeal side, and a central aperture. An interior perimeter of the cuff is attached to the laryngeal side of the plate proximal to a perimeter of the central aperture. An outer perimeter of the cuff is attached to the laryngeal side of the plate proximal to an outer perimeter of the plate.
1. A method of making a laryngeal mask airway device, the device including a mask portion and an airway tube, the mask portion including a generally elliptically shaped plate and a cuff, the plate defining a laryngeal side, a pharyngeal side, and a central aperture, an interior perimeter of the cuff being attached to the laryngeal side of the plate proximal to a perimeter of the central aperture, an outer perimeter of the cuff being attached to the laryngeal side of the plate proximal to an outer perimeter of the plate, comprising:
providing a mold, the mold including interior walls that define a hollow interior volume, the hollow interior volume including an elliptically shaped first portion and a generally toroidal second portion;
introducing a liquid plastic material into the hollow interior volume;
moving the mold so that the liquid plastic material coats the interior walls;
accumulating a majority of the plastic material in the first portion to form the plate, some of the plastic material remaining coated to the portion of the interior walls that define the second portion to form the cuff;
allowing the plastic material to solidify;
removing the solidified plastic material from the mold; and
attaching an airway tube to the pharyngeal side of the plate.
2. A method according to claim 1 , wherein moving the mold comprises rotating the mold.
3. A method according to claim 1 , wherein moving the mold comprises rotating the mold about two mutually orthogonal axes.
4. A method according to claim 1 , wherein accumulating a majority of the plastic material in the first portion comprises holding the mold in a stationary position.