Patent US4112933A successfully refreshed from Google Patents.
US4112933A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Laryngoscope of the straight blade type
Assignee: Individual
•
Filing: 1977-01-21
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Granted: 1978-09-12
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Expires: 1997-01-21
Abstract
Abstract This disclosure is directed to an improved laryngoscope blade of the straight blade type, which includes an essentially straight blade portion having a arcuate cross-section and which has connected to a longitudinal edge of the arcuate blade portion an outwardly flared flange so as to reduce the overall height of the blade while maximizing the exposure or vision through the blade to the larynx.
Inventors
- 👤 John A. Moses
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:34
CPC Classifications
A; A61; A61B; A61B1/00; A61B1/267
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
124 words
A laryngoscope blade comprising: an essentially straight portion having an end portion adapted to extend into the throat beneath the epiglottis, said straight portion being generally arcuate in cross section, a flange connected to one edge of said arcuate cross section, said flange being substantially co-extensive to a longitudinal edge of said straight portion, and said flange being turned laterally outwardly relative to the curvature of said arcuate cross section whereby the cross sectional arcuate curvature extends to one side of said flange, said flange extending laterally of said arcuate cross section an amount sufficient to rest on more than one tooth so as to distribute the pressure thereover, and said flange extending generally along an extension of a radius of said cross section.
Claim 2
Dependent Claim
124 words
A laryngoscope blade comprising: an essentially straight portion having an end portion adapted to extend into the throat beneath the epiglottis, said straight portion being generally arcuate in cross section, a flange connected to one edge of said arcuate cross section, said flange being substantially co-extensive to a longitudinal edge of said straight portion, and said flange being turned laterally outwardly relative to the curvature of said arcuate cross section whereby the cross sectional arcuate curvature extends to one side of said flange, said flange extending laterally of said arcuate cross section an amount sufficient to rest on more than one tooth so as to distribute the pressure thereover, and said flange extending generally along an extension of a radius of said cross section.
Claim 3
Dependent Claim
23 words
The invention as defined in claim 1 wherein the cross section arcuate curvature extends approximately 1.5 cms. to one side of said flange.
Claim 4
Dependent Claim
29 words
The invention as defined in claim 1 wherein the arcuate cross section of said straight portion has a height in the range of approximately 1.25 cms to 1.5 cms.
Claim 5
Dependent Claim
17 words
The invention as defined in claim 3 wherein the width of said flange is approximately 0.8 cms.
Claim 6
Dependent Claim
21 words
The invention as defined in claim 4 wherein the free end of said straight portion is elevated along a curvilinear line.
Claim 7
Dependent Claim
16 words
The invention as defined in claim 5 wherein said free end is elevated approximately 1 cm.
Claim 8
Dependent Claim
23 words
The invention as defined in claim 6 wherein said 1 cm. elevation occurs in the end 5 cms. of length of said blade.
Claim 9
Dependent Claim
13 words
The invention as defined in claim 1 wherein said flange is reversely bent.
Claim 10
Dependent Claim
91 words
A laryngoscope blade comprising: an essentially straight blade portion having an arcuate cross section which is adapted to extend into the throat with the inner end disposed beneath the epiglottis, said arcuate cross section terminating in spaced longitudinal edges, a flange extending along one of said longitudinal edges, said flange being disposed laterally outwardly and to one side of said longitudinal edge, and said flange being reversely bent to define an acute angle at the juncture of said bend, and said reversely bent portion defining a flat for engaging the teeth.
Claim 11
Dependent Claim
91 words
A laryngoscope blade comprising: an essentially straight blade portion having an arcuate cross section which is adapted to extend into the throat with the inner end disposed beneath the epiglottis, said arcuate cross section terminating in spaced longitudinal edges, a flange extending along one of said longitudinal edges, said flange being disposed laterally outwardly and to one side of said longitudinal edge, and said flange being reversely bent to define an acute angle at the juncture of said bend, and said reversely bent portion defining a flat for engaging the teeth.
Claim 12
Dependent Claim
21 words
A laryngoscope blade as defined in claim 1 wherein said arcuate cross section of said straight portion is less than 180°.
References Cited (Backward Citations)
US2354471A
Cited
US3856001A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-09-11 | 1982-03-13 | 1982-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-09-11 | 1986-03-13 | 1986-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-09-11 | 1990-03-13 | 1990-09-12 | $7700.00 | Window Closed / Lapsed |