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US3576187A Expired / Lapsed US ⏱️ 0.0 years remaining

Airway with resilient biting area

Assignee: Individual
•
Filing: 1968-10-30
•
Granted: 1971-04-27
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Expires: 1988-10-30
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Abstract

Abstract An improved oral-pharyngeal anesthesis airway has a resilient portion in the area normally contacted in use by the patient''s teeth which is yieldable to biting pressure to provide a toothcushioning effect, and means for preventing complete closure of the air passage through the resilient portion under biting pressure.

Inventors

  • 👤 Giovanna Oddera

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-28 12:47
CPC Classifications
A; A61; A61M; A61M16/00; A61M16/04; A61M16/0488; A61M16/049; A61M16/0493; A61M16/0495

Claims Analysis

Total Claims: 6
Claim 1
Independent Claim 265 words
In an airway comprising a body molded in one piece from a stiff resilient plastic material and having an inner curved portion adapted to extend into the trachea area of a patient''s throat and an outer straight portion adapted to extend through the patient''s mouth, and wherein the body comprises generally planar top and bottom walls spaced apart by at least one intervening strut element disposed intermediate the side margins of said top and bottom walls extending longitudinally of said body and being molded integrally therewith, said airway including air passage channels opening laterally along opposite sides and at the inner end of said body and having a common opening at the outer end of said body, and a pair of flanges adjacent said common opening and proJecting outwardly from the top and bottom walls, of said body so as to overlie the patient''s lips, and including a tooth-engaging area spaced from said flanges a distance substantially greater than the thickness of said flanges and approximately equal to the thickness of a patient''s lips, the improvement which comprises: the outer end of said strut element being substantially spaced from the flanges and terminating short of said tooth-engaging area of the body whereby said top and bottom walls of said body are free to flex inwardly forward of the outer end of said strut element under biting pressure applied by the patient''s teeth on the tooth-engaging area of said body, the inner lateral edges of said flanges being spaced apart sufficiently to permit substantial inward flexing of said top and bottom walls adjacent said tooth-engaging area.
Claim 2
Dependent Claim 265 words
In an airway comprising a body molded in one piece from a stiff resilient plastic material and having an inner curved portion adapted to extend into the trachea area of a patient''s throat and an outer straight portion adapted to extend through the patient''s mouth, and wherein the body comprises generally planar top and bottom walls spaced apart by at least one intervening strut element disposed intermediate the side margins of said top and bottom walls extending longitudinally of said body and being molded integrally therewith, said airway including air passage channels opening laterally along opposite sides and at the inner end of said body and having a common opening at the outer end of said body, and a pair of flanges adjacent said common opening and proJecting outwardly from the top and bottom walls, of said body so as to overlie the patient''s lips, and including a tooth-engaging area spaced from said flanges a distance substantially greater than the thickness of said flanges and approximately equal to the thickness of a patient''s lips, the improvement which comprises: the outer end of said strut element being substantially spaced from the flanges and terminating short of said tooth-engaging area of the body whereby said top and bottom walls of said body are free to flex inwardly forward of the outer end of said strut element under biting pressure applied by the patient''s teeth on the tooth-engaging area of said body, the inner lateral edges of said flanges being spaced apart sufficiently to permit substantial inward flexing of said top and bottom walls adjacent said tooth-engaging area.
Claim 3
Dependent Claim 25 words
An airway according to claim 1, including means for preventing complete closure of said common opening and said air passages through said resilient tooth-engaging portion.
Claim 4
Dependent Claim 28 words
An airway according to claim 1, wherein the means for preventing complete closure of said common opening comprises stop means interposed between the inner edges of said flanges.
Claim 5
Dependent Claim 32 words
An airway according to claim 3, wherein the means for preventing complete closure of said common opening comprises normally separated opposed stop lugs projecting from the inner lateral edges of said flanges.
Claim 6
Dependent Claim 47 words
An airway according to claim 2, wherein the means for preventing complete closure of said common opening comprises stop lug means projecting angularly inward from the inner edge of at least one of said flanges to contact the inner edge of the other flange under biting pressure.

References Cited (Backward Citations)

US3306298A Cited
US3398747A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1974-04-26 1974-10-26 1975-04-27 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1978-04-26 1978-10-26 1979-04-27 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1982-04-26 1982-10-26 1983-04-27 $7700.00 Window Closed / Lapsed

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