Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Screen reader users: click this link for accessible mode. Accessible mode has the same essential features but works better with your reader.


  1. Advanced Patent Search
Publication numberUS2599521 A
Publication typeGrant
Publication dateJun 3, 1952
Filing dateJun 2, 1949
Priority dateJun 2, 1949
Publication numberUS 2599521 A, US 2599521A, US-A-2599521, US2599521 A, US2599521A
InventorsBerman Robert A
Original AssigneeBerman Robert A
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Respiratory device
US 2599521 A
Abstract  available in
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)

June 3, 1952 BERMAN 2,599,521



Patented June 3, 1952 UNITED STATES PATENT. OFFICE Robert A. Bel-man, Lawrence, N. Y.

Application June 2, 1949, Serial No. 96,689

. 7 Claims. 1

This invention relates to a respiratory device, and relates more particularly to a respiratory airway, employed in the practice of surgery and medicine, for insertion in the mouth and pharynx of a patient to insure normal breathing. More precisely, my invention contemplates a respiratory airway for insertion in the mouth and pharynx to provide passageways through the mouth through which air may enter and be expelled in breathing when the patient is under the influence of an anesthetic or when natural respiration is rendered difficult by reason of the collapse of the walls of the pharynx or by the obstriiftion of the pharynx by the tongue sliding bac Respiratory airways of the type to which the airway of my invention belongs have heretofore been made of metal or hard rubber and were provided with a single passageway running longitudinally thereof. Since it is often necessary for the anesthetist or physician to insert the airway quickly, the metal or hard rubber airway would often cause'lacerations of the patients mouth, tongue and pharynx.

Another factor which contributed to lower the efficiency of these prior airways was the fact that they were difficult to clean the passageway of mucous and other foreign matter. Due to the pharyngeal bend in the airways it was impossible to look through the passageway from opening to opening to see whether foreign bodies were present or Whether the mucous had been cleared away by cleaning and sterilization operations.

It is an important object of my invention to provide an improved respiratory airway which will be free from the above mentioned and other disadvantages and which will be especially simple in construction and eflicient in use.

In one aspect my invention comprises a respiratory airway having two coextensive passageways open along the full length thereof and separated by a rib. The use of open passageways makes for easy cleaning under direct vision; it is impossible in the respiratory airway of my invention for any mucous or other foreign matter to go undetected.

Another object of my invention is the provision of a novel method of preparing the respiratory airway of my invention.

Other objects of my invention, together with certain detals of construction and combinations of parts, will be apparent from the following description and will be pointed out in the appended claims.

In the drawing, wherein a preferred embodiment of my invention is shown,

respiratory airway, and

Figure 4 is an end elevational view of the respiratory airway with a front view of the flanges. v Like reference numerals indicate like parts throughout the several views of the drawing. I

Referring now to the drawing for a detailed description of my invention, the reference numeral 5 indicates a length of material employed in preparing the respiratory airway of my invention, and comprises two substantially parallel surfaces 6 and I separated by a median rib or center bar 8 to form two longitudinal slots 9 and II. The surfaces 6 and I may be smooth, as shown, for greater, strength and rigidity.

Anysuitable material may be employed for makingelement 5. For example, I may employ a relative soft elastomer, such as natural or artifle cial rubber, a cellulose ester, such as cellulose acetate, cellulose propionate or cellulose butyrate, a cellulose ether such as ethyl cellulose or benzyl cellulose, acrylic resins such as methyl methacrylate, or other suitable synthetic materials. However, I prefer to use polyethylene, a polymer of ethylene which is a solid characterized by being tough, light in weight, extremely low in water absorption and moisture permeability, and resistant to alkalies, acids and oxygenated'solvents. Polyethylene can be injection and compression molded and has a softening point of from 220 to 240 C. and, accordingly, readily lends itself to my novel method of forming the respiratory airway of my invention, as will now appear.

While my respiratory airway may be formed by injection or compression molding, I prefer to prepare it as follows: The element 5 is formed in relatively long lengths by extruding thermoplastic material, such as polyethylene, through a suitable die in the form of an H-bar. A strip of the desired length is cut from a longer length of the material and the center bar 8 is slit longitudinally through substantially the center thereof for a distance of about one half of an inch. The element 5 is then subjected to the action of heat at a temperature which softens the same, the surfaces 6 and I at the slit end turned at right angles to form flanges I2 and I3, and the body portion bent to form the pharyngeal contour l4.

As is well known, the respiratory airway is usually inserted into the mouth as soon as anesthesia has been induced. The structure of my respiratory airway, with its two substantially large passageways, is such that adequate air space is present. Moreover, when polyethylene is employed as the base material of my respiratory airway, -the airway relatively soft, resilient and therefore non-traumatic. Furthermore, the polyethylene being soft, breakage or chipping of the patients teeth is prevented. The center bar 8 acts as a bite block, thus preventing the closing of the passageways 9 and II by the clamping of the teeth.

It will be noted by reference to the'cross section on Fig. 2 that the upper and lower surfaces or flanges 6 and l have running longitudinally of the device a series of ridges and grooves "extending along the major axis. These ridges and grooves'may be prepared "by the shape of the extrusion die utilised.

'I'heelements B and 1 maybe regarded as-plates connected together but separated by the central bite block 8 or they may be regarded "as the legs Oran Hor a double U.

Ihese thin plastic plates 6 and l, "as shown with-the groovesandridges as illustrated in Figs. 1,2 and4,-contribute-to the airway construction. The embodiment of my invention shown and 'ile scribetl-herein-i's to be considered merely illustrative, as "invention is'su'sceptible to 'vfaria tion 'ii'iodinatibn and change Within the spirit are soje-of'the appendedclaims.

I claim;

month and pharynx, corn-prising an -"eldngated Hat body 01 rectangular H-shape cross section with elongated parallel *laterally extending egs, sale-stay having a plurality of longitudinally extending passageways open at the ends and aldn'g the-iiigth thereof. I

an respiratory airway for insertion in the and pharynx, cornpr ising a curved elonflat body of rectangular I i-shape cf'o'ss se't'ibn'tvith elongated parallel laterally extendi rig legs, said "body savings plurality or longitil'dinally ex-tending passagewaysopenat the ends and aliig the leii'gth'tnereor.

8.;1A respiifatory airway for insertion "in the mouth and pharynx, comprising an elongated flat stays: rectangular H-shape cross section with ,el ongafted parfa-llel laterally extendin lags, said --bo'dy having I plurality of -loii'gitudinally extending pa jageways open a "ends and along the length thereof, an integral pa r er- -1. A res iratory ail-way for "insertion in the "thereof to form oppositely disposed flanges.

5. A -respiratory airway for insertion in the mouth and pharynx, comprising two substantially parallel curved thin fiat plates, and a bar extending along the longitudinal axis of and constituting a central connection between said plates and integral with said plates, separating said plates and forming two passageways open at the ends and along the length thereof, said plates being curved atone end thereof to form oppositely disposed flanges.

6. -A respiratory airway for use in surgeryior insertion 'in the mouth and pharyn'xof a patient to provide passageways through the mou'thand pharynx "through which the patient may normally breath under influence of an anesthetic and when natural respiration is rendered'dlmcult by reason of the collapse of the walls 'o't the pharynx or sliding back of the tongue, consisting of two flat closely spaced parallel thin plates having a-central 'ba'r vertical to and con nectiilg said plates and sufiiciently thick and strong to resist the pressure of the bite.

'7. The airway of claim '6 in which "the plates at the end of the airway are turned away from each other at an angle of '90 degrees 'so that they will be substantially in the-same plane with one-half of the central bar being attached to each'of theplate's, said airway being formed of "a polyethylene. H V v ROBERT A. BERMAN.

REFERENCES EITED The following rererencs are or record in "the me or this patent:


Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US1270565 *Oct 17, 1914Jun 25, 1918Teter Mfg CompanyPharyngeal inhaler.
US1661069 *Nov 14, 1925Feb 28, 1928Goodrich Co B FMethod and apparatus for making strip rubber
US2127215 *Mar 27, 1937Aug 16, 1938Gwathmey James TExpansible respiratory airway
GB105038A * Title not available
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2765792 *Apr 17, 1953Oct 9, 1956Nichols Edgar BTracheal devices
US3260258 *Jun 10, 1963Jul 12, 1966Medical Plastics IncNaso-pharyngeal-esophageal device
US3306298 *Mar 31, 1964Feb 28, 1967Raimo Victor HAirway
US3398747 *Jan 6, 1966Aug 27, 1968Victor H. RaimoAirway
US3419004 *Aug 31, 1966Dec 31, 1968Robert A. BermanRespiratory device
US3568680 *Oct 4, 1968Mar 9, 1971Raimo Victor HOropharyngeal airway
US3908665 *May 20, 1974Sep 30, 1975Moses John AOro-pharyngeal airway
US3930507 *Feb 18, 1975Jan 6, 1976Berman Robert AAdjustable oral airway
US4198970 *Sep 11, 1978Apr 22, 1980Raymond LuomanenAirway for drainage of the nasopharynx
US4256099 *Mar 21, 1979Mar 17, 1981Dryden Gale ETwo-tube resuscitation system
US4553540 *Aug 16, 1983Nov 19, 1985Straith Richard EAirway
US4919126 *May 8, 1987Apr 24, 1990Baildon David EFlexible oral airways and methods
US4987895 *Jun 22, 1988Jan 29, 1991Heimlich Henry JTracheal tube
US6474332 *Oct 1, 1998Nov 5, 2002Wisconsin Medical IncorporatedBite block
US7866313Jun 22, 2007Jan 11, 2011Isen Innovations, LlcOral airways that facilitate tracheal intubation
US7866314Dec 29, 2007Jan 11, 2011Isen Innovations, LlcMethod of tracheal intubation
US7913687Oct 23, 2006Mar 29, 2011Munn Myron LOral airway
US7946289Oct 23, 2006May 24, 2011Munn Myron LOral airway
US7954488 *Jul 17, 2007Jun 7, 2011Munn Myron LOral airway
US7975695Jan 31, 2008Jul 12, 2011Myron MunnOral airway
US8474449 *Feb 18, 2009Jul 2, 2013Portaero, Inc.Variable length pneumostoma management system for treatment of chronic obstructive pulmonary disease
US8640692Jan 26, 2010Feb 4, 2014Adrian A. MatiocOropharyngeal device for assisting oral ventilation of a patient
US20080092882 *Oct 23, 2006Apr 24, 2008Munn Myron LOral airway
US20080092900 *Jul 17, 2007Apr 24, 2008Munn Myron LOral airway
US20080121229 *Jan 31, 2008May 29, 2008Myron MunnOral airway
US20080156322 *Jun 22, 2007Jul 3, 2008Amy IsenbergOral airways that facilitate tracheal intubation
US20080156324 *Dec 29, 2007Jul 3, 2008Isen Innovations, LlcScented and flavored oral airways
US20080156331 *Dec 29, 2007Jul 3, 2008Isen Innovations, LlcMethod of tracheal intubation
US20080185004 *Oct 23, 2006Aug 7, 2008Munn Myron LOral airway
US20090205650 *Feb 18, 2009Aug 20, 2009Portaero, Inc.Variable length pneumostoma management system for treatment of chronic obstructive pulmonary disease
US20100065062 *Sep 17, 2009Mar 18, 2010Wolfe Tory Medical, Inc.Temporary pharyngeal airway
US20100199998 *Jan 26, 2010Aug 12, 2010Matioc Adrian AOropharyngeal Device for Assisting Oral Ventilation of a Patient
US20140190489 *Jan 13, 2014Jul 10, 2014Somnics, Inc.Oral device to eliminate air space in oral cavity
CN104740736A *Mar 31, 2015Jul 1, 2015上海市浦东医院Oropharynx air passage
WO1980000538A1 *Sep 11, 1979Apr 3, 1980R LuomanenAirway for drainage of the nasopharynx
U.S. Classification128/207.14
International ClassificationA61M16/04
Cooperative ClassificationA61M2016/0493, A61M2016/0495, A61M16/0488
European ClassificationA61M16/04M