Laryngeal mask assembly and method for removing same

• US 5,477,851 A
• Filed: 01/26/1995
• Issued: 12/26/1995
• Est. Priority Date: 01/26/1995
• Status: Expired due to Term

• Current Assignee: Laryngeal MASK Company Limited (Teleflex Incorporated)
• Original Assignee: Laryngeal MASK Company Limited (Teleflex Incorporated)
• Inventors: Callaghan, Mark L., Callaghan, Eric B.
• Primary Examiner(s): Burr, Edgar S.
• Assistant Examiner(s): RACITI, ERIC
• Application Number:
  US08/378,775
• Time in Patent Office: 334 Days
• Field of Search: 128/200.23, 128/207.14, 128/207.15, 128/200.24, 128/4, 128/10, 604/96, 604/97, 604/98, 604/99, 604/100, 604/101, 604/102, 604/103
• US Class Current: 128/207.15
• 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

Abstract

A laryngeal mask assembly (10) includes an artificial airway tube (14) and an inflatable mask (26). The mask (26) is forced into the mouth (20) of a patient (12) to an operating position adjacent the larynx (21). A scoping instrument (22) is sent through the artificial airway tube (14) and the inflatable mask (26) to locate the vocal cords (23) and trachea (35). The artificial airway tube (14) and inflatable mask (26) are removed, keeping the scoping instrument (22) in a position within the trachea (35) whereafter the laryngeal mask assembly (10) is removed by peeling it off the scoping instrument (22) using the slit (34) creating by the overlapping edges (36, 38).

Claims

1. An artificial airway assembly (10) for ventilating a patient (12) and utilizing a scoping device in the airway of a patient, said artificial airway assembly (10) comprising:

a flexible airway tube (14) having a patient insertion end (16) and a breathing tool receiving end (18), said flexible airway tube having pass through means for allowing a scoping instrument (22) to pass therethrough to an operating position to view vocal cords and trachea of the patient (12);

a mask (26) fixedly secured to said patient insertion end (16) of said flexible airway tube (14), said mask (26) having conforming means for conforming to a space immediately adjacent the larynx of the patient (12) to properly position the scoping instrument (22), said artificial airway assembly (10) characterized by

removing means (3) for removing said flexible airway tube (14) and mask (26) from the scoping instrument (22) while maintaining the scoping instrument (22) in the operating position.

2. An assembly (10) as set forth in claim 1 further characterized by said removing means (30) including a slit (34) extending along said flexible airway tube (14).

3. An assembly (10) as set forth in claim 2 further characterized by said slit (34) extending through a portion of said mask (26).

4. An assembly (10) as set forth in claim 3 further characterized by said slit (34) creating two opposing side edges (36, 38).

5. An assembly (10) as set forth in claim 4 further characterized by said two opposing side edges (36, 38) overlapping each other such that said artificial airway assembly (10) is substantially sealed between said patient insertion end (16) and said breathing tool receiving end (18).

6. An assembly (10) as set forth in claim 5 further characterized by said flexible airway tube (14) including a second branch (24) in fluid communication with said flexible airway tube (14) for guiding the scoping instrument (22) into flexible airway tube (14).

7. A method for intubating a patient (12) using an artificial airway assembly (10) including a mask (26) and flexible airway tube (14), and a scoping device (22), the method comprising the steps of:

inserting the artificial airway assembly (10) into the mouth (20) of a patient (12);

positioning the mask (26) adjacent the larynx;

moving the scoping device (22) through the artificial airway assembly (10) and the mask (26);

removing the artificial airway assembly (10) from the mouth (20) of the patient (12); and

peeling the artificial airway assembly (10) off the scoping device (22).