| 摘要 |
A laryngeal mask (1) comprising an air-way tube (2) and a mask portion (6) with an inflatable cuff (8) which is arranged around the airway tube (2) at the distal end thereof. A gastric tube (12) which extends at least partially along the outer surface of the airway tube (2), penetrates through the wall of said inflatable cuff (8) at a first location, extends through said inflatable cuff (8), and ends in a connection to an opening (12) in the wall of the cuff at a second location at the tip part of the laryngeal mask, so as to provide a passage through said circumferential cuff. With respect to a central mirror symmetry plane said gastric tube extends along the outer surface of the airway tube (2) in an asymmetrical manner, through said inflatable cuff (8) at the first location arranged asymmetrically with respect to said central plane, through said inflatable cuff (8), and ends in the connection to the wall of the cuff (8) at the second location at the tip part. |
| 主权项 |
1. A laryngeal mask comprising:
an airway tube having an inner lumen following a predetermined curve in a central mirror symmetry plane about which the inner lumen is generally mirror symmetrical, an outer surface, a proximal end, and a distal end, a mask portion being arranged around the distal end of the airway tube and having a proximal end opposite a distal end thereof, said mask portion comprising a circumferential cuff comprising an inner volume delimited by a closed tubular wall arranged at the periphery of the mask portion and defining, together with the distal end of the airway tube, a mask lumen, the inner lumen of the airway tube thus being in fluid communication with the mask lumen, the circumferential cuff having a shape presenting a tip part at the distal end of mask portion; and a gastric tube which extends along the outer surface of the distal end of the airway tube without penetrating therethrough, penetrates through said closed tubular wall at a first location, extends through said inner volume, and ends in a connection to an opening in the closed tubular wall at a second location, at the tip part so as to provide a passage through said circumferential cuff, wherein with respect to said central mirror symmetry plane said gastric tube extends along the outer surface of the airway tube in an asymmetrical manner, said first location being arranged asymmetrically with respect to said central mirror symmetry plane. |
