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US4982729A Expired / Lapsed US ⏱️ 0.0 years remaining

Rigid fiberoptic intubating laryngoscope

Assignee: Individual
•
Filing: 1989-12-08
•
Granted: 1991-01-08
•
Expires: 2009-12-08
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Abstract

Abstract A laryngoscope comprised of an integral handle and blade wherein the blade is curved to pass over the patient's tongue, the blade also having two fiberoptic bundles for viewing and illuminating the region around the patient's larynx, and a bivalve element that is releasably attachable to the blade to form a passageway for threading an endotracheal tube to the distal end of the blade.

Inventors

  • 👤 Tzu-Lang Wu

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-23 14:36
CPC Classifications
A; A61; A61B; A61B1/00; A61B1/267; A61B1/06; A61B1/07

Claims Analysis

Total Claims: 5
Claim 1
Independent Claim 204 words
A laryngoscope comprising: a handle; a blade connected to said handle, said blade having a substantially straight portion connected to said handle, an arcuate midportion, a substantially straight distal position terminating at a distal end, a first groove running the length of said blade and opening on the convex side of said arcuate midportion; a bivalve element having an arcuate portion, a distal end, and substantially straight portions shaped to register with corresponding portions of said blade, a second groove running the length of said arcuate portion, said blade and said bivalve element connectable together with corresponding shaped portions in contact such that said first groove and said second groove form an elongated passageway running substantially from the connection between said blade and said handle to the distal end of said blade; first interlocking means located at the distal end of said blade; second interlocking means located at the distal end of said bivalve element, said first and second interlocking means being positionable to form a releasable interlock when brought into contact with each other; holding means to releasably connect said bivalve element to said handle, and an opening into said elongated channel formed between cooperating elements of said blade and said bivalve element.
Claim 2
Dependent Claim 204 words
A laryngoscope comprising: a handle; a blade connected to said handle, said blade having a substantially straight portion connected to said handle, an arcuate midportion, a substantially straight distal position terminating at a distal end, a first groove running the length of said blade and opening on the convex side of said arcuate midportion; a bivalve element having an arcuate portion, a distal end, and substantially straight portions shaped to register with corresponding portions of said blade, a second groove running the length of said arcuate portion, said blade and said bivalve element connectable together with corresponding shaped portions in contact such that said first groove and said second groove form an elongated passageway running substantially from the connection between said blade and said handle to the distal end of said blade; first interlocking means located at the distal end of said blade; second interlocking means located at the distal end of said bivalve element, said first and second interlocking means being positionable to form a releasable interlock when brought into contact with each other; holding means to releasably connect said bivalve element to said handle, and an opening into said elongated channel formed between cooperating elements of said blade and said bivalve element.
Claim 3
Dependent Claim 47 words
The laryngoscope of claim 1 having two fiberoptic bundles running from said handle through said blade and terminating at said blade distal end, one of said bundles having illuminating means at its handle end and the other of said bundles having viewing means at its handle end.
Claim 4
Dependent Claim 15 words
The laryngoscope of claim 1 having an oxygen tube discharging at said blade distal end.
Claim 5
Dependent Claim 44 words
The laryngoscope of claim 1 wherein said handle is connected to said blade with the longitudinal axis of said handle at an angle of from about 100° to about 120° with the longitudinal axis of said portion of said blade connected to said handle.

References Cited (Backward Citations)

US328619A Cited
US2769441A Cited
US4294235A Cited
US4306547A Cited
US4527553A Cited
WO1989002719A1 Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1994-01-07 1994-07-09 1995-01-08 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1998-01-07 1998-07-09 1999-01-08 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2002-01-07 2002-07-09 2003-01-08 $7700.00 Window Closed / Lapsed

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