LARYNGEAL MASK AIRWAY DEVICE

• US 20090145438A1
• Filed: 05/24/2006
• Published: 06/11/2009
• 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:
  US11/915,556
• Publication Number:
  US 20090145438A1
• Time in Patent Office: Days
• US Class Current: 128/207.150
• 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 attached to the airway tube (2) for gaseous communication between the tube (2) and the outlet (8), the device (1) further comprising an oesophageal drain (10), the drain (10) comprising a conduit extending from an inlet (12) at the distal end (5) to an outlet (13) disposed to the outside of the patient when the device (1) is in place, the conduit including a mask section (11) and an airway tube section (41), wherein the conduit mask section (11) is formed integrally in the material of the body (4).

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 an oesophageal drain, the drain comprising a conduit extending from an inlet at the distal end to an outlet disposed to be outside of the patient when the device is in place in the patient, the conduit including a mask section and an airway tube section, wherein the conduit mask section is formed integrally in the material of the body.

2. A device according to claim 1, wherein the conduit extends substantially centrally from the distal end to the proximal end of the mask body.

3. 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, the conduit being formed on and extending from the ventral side of the plate.

4. A device according to claim 1, the conduit including an extension part which extends past the distal extent of the mask body.

5. A device according to claim 4, wherein the extension part is enclosed by, and opens out of an integrally formed pocket.

6. A device according to claim 5, wherein the pocket extends from the material of the inlet.

7. A device according to claim 4, wherein the pocket is inflatable.

8. A device according to claim 7, wherein the pocket is inflated by gas from the cuff.

9. A device according to claim 8, wherein the pocket and cuff are sealed together, there being an access point for gas from the cuff to the pocket.

10. A device according to claim 9, wherein the access way is provided by a pinch-off of the cuff.

11. A device according to claim 4, wherein the extension part includes means to prevent it collapsing under increased air pressure in the pocket.

12. A device according to claim 11, wherein the prevention means comprises one or more support web formed integrally with the extension part.

13. A device according to claim 12, wherein the or each support web extends from the extension part, substantially perpendicular thereto.

14. A device according to claim 1, wherein the mask comprises a plastics material.

15. A device according to claim 1, wherein the material is a shore 50A material.

16. A device according to claim 12, wherein the airway tube comprises a shore 90A material.