Respiratory mouthpiece

• US 4,030,493 A
• Filed: 06/18/1976
• Issued: 06/21/1977
• Est. Priority Date: 06/18/1976
• Status: Expired due to Term

• Current Assignee: Conceptual Products Incorporated
• Original Assignee: Conceptual Products Incorporated
• Inventors: Walters, William T., Parlette, Marvin D. Jr.
• Primary Examiner(s): Michell, Robert W.
• Assistant Examiner(s): Recla, Henry J.
• Application Number:
  US05/697,410
• Time in Patent Office: 368 Days
• Field of Search: 128/147, 128/146.7, 128/146 R, 128/145 A, 128/145 R, 128/145.8, 128/145.7, 128/145.5, 128/142 R, 128/141 R, 128/140 R, 128/188, 128/198, 128/201 , 128/208, 128/351, 128/136
• US Class Current: 128/206.21
• CPC Class Codes: A61M 16/0488 Mouthpieces; Means for guiding, securing or introducing the tubes guiding or introducing with laryngoscopes A61B1/267; holding devices on the body A61M25/02
• CPC Class Codes: A61M 16/0493 with means for protecting the tube from damage caused by the patient's teeth, e.g. bite block

Abstract

A respiratory mouthpiece for a positive pressure breathing apparatus made as an integral flexible elastomer molding in an oval concave shape having a ridge along the inner periphery to provide a seal against the outer surfaces of the mouth when pressed against the face and an opening in the center of the mouthpiece defined by a tube to fit over a mouthpiece holder of a breathing apparatus.

Claims

1. A flexible, resilient respiratory mouthpiece for a therapeutic breathing apparatus comprising

a. a substantially ovate, concave face plate,

b. a ridge along the periphery of the concave side of said face plate having a height above the face plate greater than the wall thickness of the face plate in the regions across the shorter diameter of the face plate, and a height above the face plate no greater than the said wall thickness in the regions of the ovate extremities of the face plate and

c. a tube defining an elongated opening in the center of the face plate and extending inwardly on the concave side of the face plate, adapted to fit over a mouthpiece holder of a breathing apparatus;

d. the mouthpiece being a one piece integral molding of an elastomeric material having sufficient stiffness and flexibility to provide a seal against air pressure entering the mouth from the breathing apparatus when the ridge is pressed inwardly against the outer surfaces around a patient'"'"'s mouth.

2. The mouthpiece as defined in claim 1 in which the sides of the ridge are free of undercuts along its length.

3. The mouthpiece as defined in claim 1 in which the sides of the ridge lie between parallel surfaces extending at right angles to the face plate along the length of the ridge so as to be free of undercuts along its length.

4. The mouthpiece as defined in claim 1 made of flexible, elastomeric material having a Shore hardness between 38 and 55.

5. The mouthpiece as defined in claim 1 made of thermoplastic block copolymer of styrene and butadiene having a Shore hardness between 38 and 55.