LARYNGEAL MASK AIRWAY DEVICE

• US 20090133701A1
• Filed: 05/24/2006
• Published: 05/28/2009
• 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:
  US11/915,563
• Publication Number:
  US 20090133701A1
• Time in Patent Office: Days
• US Class Current: 128/207.140
• 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 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 an outlet (8), the mask (3) being attached to the airway tube (2) for gaseous communication between the tube (2) and the outlet (8), the device (1) further comprising means to prevent occlusion of the outlet (8) by the patient'"'"'s anatomy, the means comprising a support (11), and a conduit (28a) to allow gas to flow out of the outlet (8), past the support.

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 device further comprising means to prevent occlusion of the outlet by the patient'"'"'s anatomy, the means comprising a support, the support defining a support surface, and a conduit to allow gas to flow out of the outlet past the support.

2. A device according to claim 1, the outlet including a floor, the support being disposed to support an occluding anatomical structure above the level of the floor, to allow gas to flow therebelow.

3. A device according to claim 1, the body having dorsal and ventral sides, the support surface being disposed on the ventral side, in front of the outlet in the path of gas flow.

4. A device according to claim 1, wherein the support surface is integrally formed in the material of the body.

5. A device according to claim 1, wherein the support surface is provided upon a substantially centrally disposed, longitudinal upstand, extending from in front of the outlet towards the distal end, which raises the support surface above the level of the ventral side.

6. A device according to claim 1, the conduit including a floor, the floor being defined by a part of the ventral side of the body.

7. A device according to claim 1, the conduit being defined by side walls, at least one side wall being defined by a part of the support.

8. A device according to claim 1, the conduit having a substantially circular cross-section.

9. A device according to claim 7, the side walls including laterally extending webs, to partially close over the conduit.

10. A device according to claim 9, the webs including upper surfaces disposed at the same level as the support, to prevent entry of an occluding structure into the conduit.

11. A device according to claim 1, including a plurality of conduits.

12. A device according to claim 11, there being two conduits, the conduits being disposed either side of the support.

13. A device according to claim 1, the support being an outer surface of an oesophageal drain tube.

14. A device according to claim 13, the drain tube being formed integrally in the material of the body.

15. A device according to claim 14, the drain tube extending substantially centrally along the ventral side of the body, from the outlet to the tip.

16. A device according to claim 8, the side walls including laterally extending webs, to partially close over the conduit.