US4579108A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Laryngoscope blade and disposable cover
Assignee: Individual
•
Filing: 1985-01-04
•
Granted: 1986-04-01
•
Expires: 2005-01-04
Abstract
Abstract An improved laryngoscope blade is shaped similarly to a conventional blade except that a downwardly extending fin and lateral portion is not used. Rather an integral sleeve of plastic material is provided and receivable over the front portion of the blade in the manner of a stocking. This plastic sleeve has a solid downwardly extending fin portion and a lateral extending portion. The plastic cover or sleeve serves two functions: first, it removes the necessity of sterilizing the laryngoscope blade itself since the sleeve can be removed and disposed of after each use; second, the extended fin and lateral portion of the sleeve serves as a second surface to cushion contact of the blade with a patient's upper front teeth should these teeth be used unconsciously as a fulcrum when manipulating the blade to expose the larynx in order to facilitate insertion of an endotracheal tube.
Inventors
- 👤 Jack Bauman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:02
CPC Classifications
A; A61; A61B; A61B1/00; A61B1/267; A61B1/00142
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
192 words
In a laryngoscope having a rigid blade and a disposable cover therefor wherein the blade has a tongue engaging lower flange and wherein the cover comprises an integral sleeve having a proximal and distal end and formed from a plastic material into a unitary hollow structure which is closed at the distal end thereof and which has an opening at the proximal end thereof adapted so that the cover can be fitted over a length of the blade until the distal end of the blade reaches the closed distal end of the cover, the impovement comprising: a. said blade having an upstanding fin which extends along the blade from the proximal end to the central portion thereof where the blade is intended to be opposite to the patient's upper front teeth during the laryngoscopic examination; and b. the sleeve of the blade cover having a thickened, reinforced plastic web which extends outwardly from the sleeve which fits over the fin of the blade having a thickened, reinforced flange integral with the web which extends laterally therefrom and which flexes or bends when urged against the patient's teeth to thereby avoid damage thereto.
Claim 2
Dependent Claim
192 words
In a laryngoscope having a rigid blade and a disposable cover therefor wherein the blade has a tongue engaging lower flange and wherein the cover comprises an integral sleeve having a proximal and distal end and formed from a plastic material into a unitary hollow structure which is closed at the distal end thereof and which has an opening at the proximal end thereof adapted so that the cover can be fitted over a length of the blade until the distal end of the blade reaches the closed distal end of the cover, the impovement comprising: a. said blade having an upstanding fin which extends along the blade from the proximal end to the central portion thereof where the blade is intended to be opposite to the patient's upper front teeth during the laryngoscopic examination; and b. the sleeve of the blade cover having a thickened, reinforced plastic web which extends outwardly from the sleeve which fits over the fin of the blade having a thickened, reinforced flange integral with the web which extends laterally therefrom and which flexes or bends when urged against the patient's teeth to thereby avoid damage thereto.
Claim 3
Dependent Claim
47 words
The subject matter of claim 1, in which said blade includes a light exit area and in which said sleeve includes at least a portion which is transparent overlying said light exit area so that light is available when using the laryngoscope with the sleeve in place.
Claim 4
Dependent Claim
17 words
The subject matter of claim 1, in which said blade is a modification of the MacIntosh type.
Claim 5
Dependent Claim
17 words
The subject matter of claim 1, in which said blade is a modification of the Guedel type.
Claim 6
Dependent Claim
17 words
The subject matter of claim 1, in which said blade is a modification of the Miller type.
Claim 7
Dependent Claim
21 words
The subject matter of claim 1, in which said blade is a modification of various types of curved and straight blades.
References Cited (Backward Citations)
US3426749A
Cited
US3826248A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-03-31 | 1989-09-30 | 1990-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-03-31 | 1993-09-30 | 1994-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-03-31 | 1997-09-30 | 1998-04-01 | $7700.00 | Window Closed / Lapsed |