US4834077A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sterile disposable linguiform laryngoscope blade sheath
Assignee: Individual
•
Filing: 1986-09-16
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Granted: 1989-05-30
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Expires: 2006-09-16
Abstract
Abstract This disclosure is directed to an improved laryngoscope blade sheath for use in the intubation process to maximize laryngoscope use by providing a single unit to orchestrate the laryngescope and the endotracheal tube. This invention is a sterile, disposable, generally linguiform laryngoscope blade sheath. The sheath is made mostly from a fairly rigid material. The inside of the sheath is hollow so that all the common standard laryngoscope blades can be inserted through its aperture. The width of the sheath is wider than the common blades and the shape of the sheath is curved and spoon-like so that the tongue can be lifted stably without slipping. There are orifices on the underneath surface of the sheath so that the light of the laryngoscope blade can shine through these orifices and the trachea can be visualized. The sheath also has an intubation guide groove underneath to make intubation more efficent. Because this sheath is used only once there is no danger of cross infection.
Inventors
- 👤 William Y. Sun
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:53
CPC Classifications
A; A61; A61B; A61B1/00; A61B1/267; A61B1/00142; A61B50/00
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
88 words
A sterile disposable linguiform sheath for mounting on a laryngoscope blade, said sheath containing a longitudinal channel with an orifice for the insertion of a laryngoscope blade, said sheath being formed in such a shape and extending beyond the blade channel a distance sufficient to self support the tongue, said sheath being made from a rigid material such that it is self-supporting and capable of maintaining its shape against the weight of and force exerted by the tongue so as to support the tongue without slippage during use.
Claim 2
Dependent Claim
88 words
A sterile disposable linguiform sheath for mounting on a laryngoscope blade, said sheath containing a longitudinal channel with an orifice for the insertion of a laryngoscope blade, said sheath being formed in such a shape and extending beyond the blade channel a distance sufficient to self support the tongue, said sheath being made from a rigid material such that it is self-supporting and capable of maintaining its shape against the weight of and force exerted by the tongue so as to support the tongue without slippage during use.
Claim 3
Dependent Claim
37 words
A sterile disposable linguiform sheath for a laryngoscope blade as defined in claim 1 wherein said sheath is of a size and shape so that it will fit easily into the mouth of infants, children or adults.
Claim 4
Dependent Claim
47 words
A sterile disposable linguiform sheath for a laryngoscope blade as defined in claim 1 wherein the bottom of the sheath contains at least one orifice so that a light of the common type can be projected or diffused through it and the trachea can be easily visualized.
Claim 5
Dependent Claim
31 words
A sterile disposable linguiform sheath for a laryngoscope blade as defined in claim 1 wherein the edges of the side of the top surface are curved to promote rigidity and support.
Claim 6
Dependent Claim
48 words
A sterile disposable linguiform sheath for a laryngoscope blade as defined in claim 1 wherein said sheath is formed to house every portion of the laryngoscope blade inserted into the mouth thus keeping the blade from direct contact with the patient's mouth and reducing the risk of contamination.
Claim 7
Dependent Claim
45 words
A sterile disposable linguiform sheath for a laryngoscope blade as defined in claim 1 containing in addition an intubation guide groove to facilitate the introduction of the endotracheal tube and to reinforce the sheath for supporting the tongue and for further stabilizing the intubation process.
Claim 8
Dependent Claim
35 words
A sterile disposable linguiform sheath for a laryngoscope blade with a guide groove for instrument guide and support as in claim 6 wherein the sheath is sterilized and is used only once minimizing cross infection.
Claim 9
Dependent Claim
50 words
A sterile disposable linguiform sheath for a laryngoscope blade with guide groove for instrument guide and support as in claim 6 wherein said sheath, a laryngoscope and an endotracheal tube are combined to form one self supported synergistic unit making the intubation process more effective and relatively free of difficulties.
Claim 10
Dependent Claim
132 words
A sterile disposable linguiform sheath for a laryngoscope blade, said sheath containing a longitudinal channel with an orifice for the insertion of a laryngoscope blade, said sheath being made from a rigid material and being formed in such a shape and extending beyond the blade channel a distance sufficient to self-support the tongue such that it is self-supporting and capable of maintaining its shape against pressures such as that exerted by the weight of the tongue and forces exerted by it, a rigid intubation guide groove formed in said sheath beyond and adjacent to said longitudinal channel and forming a part of the sheath, said guide groove shaped to facilitate the introduction of an endotracheal tube and to reinforce the remaining portion of the sheath and for further stabilizing the intubation process.
Claim 11
Dependent Claim
132 words
A sterile disposable linguiform sheath for a laryngoscope blade, said sheath containing a longitudinal channel with an orifice for the insertion of a laryngoscope blade, said sheath being made from a rigid material and being formed in such a shape and extending beyond the blade channel a distance sufficient to self-support the tongue such that it is self-supporting and capable of maintaining its shape against pressures such as that exerted by the weight of the tongue and forces exerted by it, a rigid intubation guide groove formed in said sheath beyond and adjacent to said longitudinal channel and forming a part of the sheath, said guide groove shaped to facilitate the introduction of an endotracheal tube and to reinforce the remaining portion of the sheath and for further stabilizing the intubation process.
Claim 12
Dependent Claim
30 words
A sterile disposable linguiform sheath for a laryngoscope blade as set forth in claim 9 wherein the sheath has curved surfaces to hold the tongue motionless during the intubation process.
Claim 13
Dependent Claim
30 words
A sterile disposable linguiform sheath for a laryngoscope blade as set forth in claim 10 wherein the sheath additionally contains at least one orifice for use with a light means.
References Cited (Backward Citations)
US3426749A
Cited
US3851642A
Cited
US3856001A
Cited
FR2381528A1
Cited
US4344419A
Cited
US4425909A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-05-29 | 1992-11-28 | 1993-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-05-29 | 1996-11-28 | 1997-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-05-29 | 2000-11-28 | 2001-05-30 | $7700.00 | Window Closed / Lapsed |