Myringotomy tube

Claim 2

A myringotomy tube for providing ventilation and drainage of the middle ear through the external auditory canal, said myringotomy tube comprising a principal member having a passageway provided therein for communicating the middle ear with the external auditory canal subsequent to said principal member having been inserted through a surgical incision applied to the tympanic membrane, an inner flange member integrally combined with said principal member and being disposed at the innermost end thereof for precluding at least in part the inimical natural tendency of the healing incision to cause said myringotomy tube to be spontaneously extruded into the external auditory canal, and the external surface of said inner flange member being substantially elliptical shaped in cross-section as taken on a plane normal to said passageway for facilitating initial engagement thereof with a lip portion of the tympanic membrane defining the incision provided therein to establish optimum ease in the insertion of said myringotomy tube through the incision.

Claim 3

The myringotomy tube as set forth in claim 1 in which is included means for causing said principal member to be urged a predetermined distance inwardly of the middle ear with said inner flange member being situated a spaced distance inwardly from the tympanic membrane during the healing process of the incision whereby spontaneous extrusion of the myringotomy tube is substantially obviated.

Claim 4

A myringotomy tube for providing ventilation and drainage of the middle ear through the external auditory canal, said myringotomy tube comprising a principal member having a passageway provided therein for communicating the middle ear with the external auditory canal subsequent to said principal member having been inserted through a surgical incision applied to the tympanic membrane, a inner flange member integrally combined with said principal member and being disposed at the innermost end thereof for precluding at least in part the inimical natural tendency of the healing incision to cause said myringotomy tube to be spontaneously extruded into the external auditory canal, and said inner flange member including at least one sharply tapered portion integrally combined therewith for facilitating initial engagement thereof with a lip portion of the tympanic membrane defining the incision provided therein to established optimum ease in the insertion of said myringotomy tube through the incision, the external surface of said principal member being elliptical shaped in cross-section for engaging and conforming the lip portion of the tympanic membrane defining the incision provided therein toward an unnatural elliptical shape as the healing process develops to further aid in precluding spontaneous extrusion of the myringotomy tube.

Claim 5

A myringotomy tube for providing ventilation and drainage of the middle ear through the external auditory canal, said myringotomy tube comprising a principal member having a passageway provided therein for communicating the middle ear with the external auditory canal subsequent to said principal member having been inserted through a surgical incision applied to the tympanic membrane, a inner flange member integrally combined with said principal member and being disposed at the innermost end thereof for precluding at least in part the inimical natural tendency of the healing incision to cause said myringotomy tube to be spontaneously extruded into the external auditory canal, and said inner flange member including at least one sharply tapered portion integrally combined therewith for facilitating initial engagement thereof with a lip portion of the tympanic membrane defining the incision provided therein to established optimum ease in the insertion of said myringotomy tube through the incision, the external surface of said principal member being elliptical shaped in cross-section for engaging and conforming the lip portion of the tympanic membrane defining the incision provided therein toward an unnatural elliptical shape as the healing process develops to further aid in precluding spontaneous extrusion of the myringotomy tube.

Claim 6

The myringotomy tube as set forth in claim 3 in which is included means for causing said principal member to be urged a predetermined distance inwardly of the middle ear with said inner flange member being situated a spaced distance inwardly from the tympanic membrane during the healing process of the incision whereby spontaneous extrusion of the myringotomy tube is substantially obviated.

Claim 7

A myringotomy tube for providing ventilation and drainage of the middle ear through the external auditory canal, said myringotomy tube comprising a principal member having a passageway provided therein for communicating the middle ear with the external auditory canal subsequent to said principal member having been inserted through a surgical incision applied to the tympanic membrane, an inner flange member integrally combined with said principal member and being disposed at the innermost end thereof for precluding at least in part the inimical natural tendency of the healing incision to cause said myringotomy tube to be spontaneously extruded into the external auditory canal, the external surface of said inner flange member being substantially elliptical shaped in cross-section as taken on a plane normal to said passageway for facilitating initial engagement thereof with a lip portion of the tympanic membrane defining the incision provided therein to extablish optimum ease in the insertion of said myringotomy tube through the incision, and an outer flange member integrally combined with said principal member and being disposed at the outermost end thereof for precluding at least in part the inimical migratory intrusion of said myringotomy tube into the middle ear.

Claim 8

A myringotomy tube for providing ventilation and drainage of the middle ear through the external auditory canal, said myringotomy tube comprising a principal member having a passageway provided therein for communicating the middle ear with the external auditory canal subsequent to said principal member having been inserted through a surgical incision applied to the tympanic membrane, an inner flange member integrally combined with said principal member and being disposed at the innermost end thereof for precluding at least in part the inimical natural tendency of the healing incision to cause said myringotomy tube to be spontaneously extruded into the external auditory canal, the external surface of said inner flange member being substantially elliptical shaped in cross-section as taken on a plane normal to said passageway for facilitating initial engagement thereof with a lip portion of the tympanic membrane defining the incision provided therein to extablish optimum ease in the insertion of said myringotomy tube through the incision, and an outer flange member integrally combined with said principal member and being disposed at the outermost end thereof for precluding at least in part the inimical migratory intrusion of said myringotomy tube into the middle ear.

Claim 9

The myringotomy tube as set forth in claim 5 in which is included means for causing said principal member to be urged toward a substantially equilibrium condition wherein neither of said inner and outer flange members engages the tympanic membrane during the healing process of the incision whereby the inimical spontaneous extrusion and migratory intrusion of said myringotomy tube are substantially obviated.

Claim 10

A myringotomy tube for providing ventilation and drainage of the middle ear through the external auditory canal, said myringotomy tube comprising a principal member having a passageway provided therein for communicating the middle ear with the external auditory canal subsequent to said principal member having been inserted through a surgical incision applied to the tympanic membrane, an inner flange member integrally combined with said principal member and being disposed at the innermost end thereof for precluding at least in part the inimical natural tendency of the healing incision to cause said myringotomy tube to be spontaneously extruded into the external auditory canal, said inner flange member including a pair of remotely disposed sharply tapered portions integrally combined therewith for individually facilitating initial engagement thereof with a lip portion of the tympanic membrane defining the incision provided therein to establish optimum ease in the insertion of said myringotomy tube through the incision, and an outer flange member integrally combined with said principal member and being disposed at the outermost end thereof for precluding at least in part the inimical migratory intrusion of said myringotomy tube into the middle ear, the external surface of said principal member being elliptical shaped in cross-section for engaging and conforming that portion of the tympanic membrane defining the incision provided therein toward an unnatural elliptical shape as the healing process develops to further aid in precluding spontaneous extrusion of the myringotomy tube.

Claim 11

A myringotomy tube for providing ventilation and drainage of the middle ear through the external auditory canal, said myringotomy tube comprising a principal member having a passageway provided therein for communicating the middle ear with the external auditory canal subsequent to said principal member having been inserted through a surgical incision applied to the tympanic membrane, an inner flange member integrally combined with said principal member and being disposed at the innermost end thereof for precluding at least in part the inimical natural tendency of the healing incision to cause said myringotomy tube to be spontaneously extruded into the external auditory canal, said inner flange member including a pair of remotely disposed sharply tapered portions integrally combined therewith for individually facilitating initial engagement thereof with a lip portion of the tympanic membrane defining the incision provided therein to establish optimum ease in the insertion of said myringotomy tube through the incision, and an outer flange member integrally combined with said principal member and being disposed at the outermost end thereof for precluding at least in part the inimical migratory intrusion of said myringotomy tube into the middle ear, the external surface of said principal member being elliptical shaped in cross-section for engaging and conforming that portion of the tympanic membrane defining the incision provided therein toward an unnatural elliptical shape as the healing process develops to further aid in precluding spontaneous extrusion of the myringotomy tube.

Claim 12

The myringotomy tube as set forth in claim 7 in which said elliptical shaped external surface expands gradually annularly from a minimal portion disposed a spaced distance from said inner flange member toward a maximum portion disposed adjacent said inner flange member for causing said myringotomy tube to tend to be urged toward said minimal portion as the healing process of the incision develops.

Claim 13

The myringotomy tube as set forth in claim 7 in which said principal member includes annular gradient means for further aiding in precluding the inimical spontaneous extrusion and migratory intrusion of the myringotomy tube, said annular gradient means includes means for (1) establishing a minimal outer diameter portion of said principal member with said minimal outer diameter portion being disposed adjacent the middle of the length thereof and (2) for establishing greater outer diameter portions disposed respectively adjacent said inner and outer flange members with the outer diameter of said principal member gradually increasing radially outwardly from said minimal outer diameter portion toward either end thereof.

Claim 14

A myringotomy tube providing ventilation and drainage of the middle ear through the external auditory canal, said myringotomy tube comprising a principal member having a passageway provided therein for communicating the middle ear with the external auditory canal subsequent to said principal member having been inserted through a surgical incision applied to the tympanic membrane, an inner flange member integrally combined with said principal member and being disposed at the innermost end thereof for precluding at least in part the inimical natural tendency of the healing incision to cause said myringotomy tube to be spontaneously extruded into the external auditory canal, said inner flange member including a pair of remotely disposed sharply tapered portions integrally combined therewith for individually facilitating initial engagement thereof with a lip portion of the tympanic membrane defining the incision provided therein to establish optimum ease in the insertion of said myringotomy tube through the incision, and an outer flange member integrally combined with said principal member and being disposed at the outermost end thereof for precluding at least in part the inimical migratory intrusion of said myringotomy tube into the middle ear, said passageway being circular in cross-section and being defined by a wall having an irregular thickness, said wall including a pair of remotely disposed thick portions which are sharply tapered in cross-section at the exterior surfaces thereof for engaging and comforming that portion of the tympanic membrane defining the incision provided therein toward an unnatural elliptical shape as the healing process develops to further aid in precluding spontaneous extrusion of the myringotomy tube.

Claim 15

A myringotomy tube providing ventilation and drainage of the middle ear through the external auditory canal, said myringotomy tube comprising a principal member having a passageway provided therein for communicating the middle ear with the external auditory canal subsequent to said principal member having been inserted through a surgical incision applied to the tympanic membrane, an inner flange member integrally combined with said principal member and being disposed at the innermost end thereof for precluding at least in part the inimical natural tendency of the healing incision to cause said myringotomy tube to be spontaneously extruded into the external auditory canal, said inner flange member including a pair of remotely disposed sharply tapered portions integrally combined therewith for individually facilitating initial engagement thereof with a lip portion of the tympanic membrane defining the incision provided therein to establish optimum ease in the insertion of said myringotomy tube through the incision, and an outer flange member integrally combined with said principal member and being disposed at the outermost end thereof for precluding at least in part the inimical migratory intrusion of said myringotomy tube into the middle ear, said passageway being circular in cross-section and being defined by a wall having an irregular thickness, said wall including a pair of remotely disposed thick portions which are sharply tapered in cross-section at the exterior surfaces thereof for engaging and comforming that portion of the tympanic membrane defining the incision provided therein toward an unnatural elliptical shape as the healing process develops to further aid in precluding spontaneous extrusion of the myringotomy tube.

Claim 16

The myringotomy tube as set forth in claim 5 in which is included tab means integrally combined with said outer flange member for facilitating insertion and removal of said myringotomy tube.

Claim 17

The myringotomy tube as set forth in claim 5 in which said tab means is provided with an aperture extending therethrough at a right angle for accommodating the working end of a right angle pick instrument which may be received during insertion and/or removal of said myringotomy tube.

Claim 18

The myringotomy tube as set forth in claim 5 in which said principal member includes annular gradient means for further aiding in precluding the inimical spontaneous extrusion and migratory intrusion of said myringotomy tube, said annular gradient means includes means for (1) establishing a minimal outer diameter portion of said principal member with said minimal outer diameter portion being disposed adjacent the middle of the length thereof and (2) for establishing greater outer diameter portions disposed respectively adjacent said inner and outer flange members with the outer diameter of said principal member gradually increasing radially outwardly from said minimal outer diameter portion toward either end thereof.

Claim 19

A myringotomy tube (for providing ventilation and drainage of the middle ear through the external auditory canal,) said myringotomy tube comprising a principal member having a passageway provided therein (for communicating the middle ear with the external auditory canal subsequent to said principal member having been inserted through a surgical incision applied to the tympanic membrane,) an inner flange member combined with said principal member (for precluding at least in part the natural tendency of the healing incision to cause said myringotomy tube to be spontaneously extruded into the external auditory canal), the external surface of said principle member being substantially elliptical shaped in cross-section.

Claim 20

A myringotomy tube (for providing ventilation and drainage of the middle ear through the external auditory canal,) said myringotomy tube comprising a principal member having a passageway provided therein (for communicating the middle ear with the external auditory canal subsequent to said principal member having been inserted through a surgical incision applied to the tympanic membrane,) an inner flange member combined with said principal member (for precluding at least in part the natural tendency of the healing incision to cause said myringotomy tube to be spontaneously extruded into the external auditory canal), the external surface of said principle member being substantially elliptical shaped in cross-section.