LARYNGEAL MASK AIRWAY DEVICE AND METHOD OF MANUFACTURE

• US 20100059061A1
• Filed: 05/24/2006
• Published: 03/11/2010
• Est. Priority Date: 05/27/2005
• Status: Active Grant

• Current Assignee: Teleflex Life Sciences LLC (Teleflex Incorporated)
• Original Assignee: Laryngeal MASK Company Limited (Teleflex Incorporated)
• Inventors: Brain, Archibald I. J.
• Granted Patent: US 9,522,245 B2
• 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 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 method of making 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 method comprising providing an airway tube, over-moulding a mask body onto said airway tube, and attaching a cuff to said mask body.

2. A method according to claim 1, including the step of providing an airway tube including attachment surfaces.

3. A method according to claim 2, including the step of providing a relatively stiff airway tube having a preformed curvature.

4. A method according to claim 1, including the step of forming the cuff by blow-moulding prior to attaching it to the mask.

5. A method according to claim 4, wherein the cuff is attached to the mask as a gas-tight member, and including the step of removing a pinch-off after attachment.

6. A method according to claim 1, including the step of moulding the body including an integral oesophageal drain tube, and attaching the integrally moulded drain tube to a drain tube of the airway.

7. A method according to claim 6, including the step of integrally moulding a cuff to the circumference of the drain tube opening.

8. 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 being made by over-molding the mask body onto the airway tube and attaching a cuff to the mask body.