Laryngeal Mask Airway Device

• US 20080308109A1
• Filed: 05/24/2006
• Published: 12/18/2008
• Est. Priority Date: 05/27/2005
• Status: Abandoned Application

• Current Assignee: Teleflex Life Sciences Pte., Ltd. (Teleflex Incorporated)
• Original Assignee: Laryngeal MASK Company Limited (Teleflex Incorporated)
• Inventors: Brain, Archibald I. J.
• Application Number:
  US11/915,557
• Publication Number:
  US 20080308109A1
• Time in Patent Office: Days
• US Class Current: 128/207.14
• CPC Class Codes: A61M 16/04 Tracheal tubes catheters in general A61M25/00
• CPC Class Codes: A61M 16/0409 with mean for closing the oesophagus
• CPC Class Codes: A61M 16/0415 with access means to the stomach
• CPC Class Codes: A61M 16/0443 Special cuff-wall materials A61M16/0481, A61M16/0422 take precedence
• CPC Class Codes: A61M 16/0447 Bell, canopy or umbrella shaped
• CPC Class Codes: A61M 16/045 with cuffs partially or completely inflated by the respiratory gas
• CPC Class Codes: A61M 16/0463 combined with suction tubes, catheters or the like; Outside connections
• CPC Class Codes: A61M 16/0493 with means for protecting the tube from damage caused by the patient's teeth, e.g. bite block
• CPC Class Codes: A61M 16/0816 Joints or connectors
• CPC Class Codes: A61M 16/0875 Connecting tubes

Abstract

The invention relates to a laryngeal mask airway device (1) for insertion into a patient to provide an airway passage to the patient'"'"'s glottic opening, the device (1) comprising an airway tube (2), a mask (3) attached to the airway tube (2), the mask (3) comprising a body (4) having a distal end (5) and a proximal end (6), a peripheral inflatable cuff (7), and defining an outlet (8) for gas, the mask (3) being connected to the airway tube (2) for gaseous communication between the tube (2) and the mask, the distal end of the mask being ventrally displaced, relative to the proximal end.

Claims

1. A laryngeal mask airway device for insertion into a patient to provide an airway passage to the patient'"'"'s glottic opening, the device comprising an airway tube, a mask attached to the airway tube, the mask comprising a body having a distal end and a proximal end, a peripheral inflatable cuff, and defining an outlet for gas, the mask being connected to the airway tube for gaseous communication between the tube and the mask, the distal end of the mask being ventrally displaced, relative to the proximal end.

2. A device according to claim 1, wherein the extent of distal displacement is from about 5 mm to about 20 mm.

3. A device according to claim 2, wherein the extent of distal displacement is about 10 mm.

4. A device according to claim 1, the body describing a substantially convex curve, from the proximal to distal end.

5. A device according to claim 1, the mask body comprising a plate, the plate having a dorsal side and a ventral side, the dorsal side being substantially smooth and having a convex curvature across its width.

6. A device according to claim 5, the airway tube having a dorsal surface, the dorsal surface of the airway tube corresponding in curvature to the curvature across the width of the plate.

7. A device according to claim 1, the airway tube comprising a relatively more rigid material than the mask body.

8. A device according to claim 1, further including an oesophageal drain tube.

9. A device according to claim 8, the oesophageal drain tube being disposed on the ventral side of the body.