Gastro-laryngeal mask
View Patent ↗A method of making a device by integrally molding. The device includes an inflatable mask comprising a relatively stiff component and a relatively soft compliant flexible component. The mask is insertable, at least when deflated, through a mouth of the patient to an inserted location within a patient. The inserted location is near a laryngeal inlet of the patient. The device also includes an airway tube and an evacuation tube coupled to the mask. The relatively soft compliant flexible component of the mask is integrally formed in a single moulding operation.
1. A method of making a device including:
(A) providing an inflatable mask comprising a relatively stiff component and a relatively soft compliant flexible component, the mask being insertable, at least when deflated, through a mouth of a patient to an inserted location within the patient, the inserted location being near a laryngeal inlet of the patient;
(B) providing an airway tube coupled to the mask, the airway tube extending from a proximal end located outside of the patient's mouth through an interdental gap to the mask when the mask is at the inserted location, the interdental gap being a space between the patient's lower teeth and the patient's upper teeth;
(C) providing an evacuation tube for communication with an esophageal inlet of the patient, the evacuation tube being coupled to the mask, the evacuation tube extending from a proximal end located outside of the patient's mouth through the interdental gap to the mask when the mask is at the inserted location; and
integrally forming the relatively soft compliant flexible component of the mask in a single moulding operation;
wherein integrally forming the relatively soft compliant flexible component of the mask comprises integrally forming an inflation-air inlet formation, an outwardly directed distal-end tube and an open skirt.
2. A method of making a device according to claim 1 , further including a step of rotating the outwardly directed distal-end with respect to the open skirt and tucking the integrally formed distal-end tube into a flange of the open skirt.
3. A method of making a device according to claim 2 , further including a step of turning a portion of the skirt inside-out, thus defining a ring.
4. A method of making a device according to claim 3 , further comprising the step of adhesively bonding the relatively stiff component to the relatively soft component after the skirt has been turned inside-out.
5. A method of making a device according to claim 4 , wherein the relatively stiff component comprises a back-cushion panel, and the back-cushion panel is centrally adhered to the inwardly directed distal-end tube of the relatively soft component.
6. A method of making a device according to claim 4 , wherein the edges of the inwardly directed distal-end tube are adhesively sealed to the locally adjacent walls of the ring.
7. A method of making a device according to claim 4 , further comprising adhesively sealing the evacuation tube to the inwardly directed distal-end tube after the relatively stiff component has been adhesively bonded to the relatively soft component.
8. A method of making a device according to claim 1 , wherein integrally forming the mask comprises integrally forming axially spaced stiffening ribs or ridges located on the outwardly directed distal-end tube.
9. A method of making a device according to claim 8 , wherein the axially spaced stiffening ribs or ridges are integrally formed on the inner surface of the outwardly directed distal-end tube so that after the outwardly directed distal-end tube is tucked into the flange of the open skirt the axially spaced stiffening ribs or ridges are located on the outer surface of the inwardly directed distal-end tube.