Patent US4546774A successfully refreshed from Google Patents.
US4546774A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Leveling device for hemodynamic monitoring transducer assembly
Assignee: Individual
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Filing: 1983-02-24
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Granted: 1985-10-15
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Expires: 2003-02-24
Abstract
Abstract For use in adjusting a hemodynamic transducer assembly on an IV stand to the level of the right atrium of a patient's heart, an elongated flexible line carries a small bubble level and has a loop at one end for insertion on the transducer assembly and a spring clip on the opposite end for attachment to an adhesive patch on the side of the patient's chest at the level of the right atrium.
Inventors
- 👤 Robert M. Haught
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:20
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/02; A61B5/021; A61B5/0215; A61B90/00; A61B90/06; A61B2090/067; A61B2090/068
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
97 words
In combination with a vertically adjustable hemodynamic monitoring transducer assembly, a leveling device comprising: an elongated flexible line adapted to extend substantially taut between said transducer assembly and the chest of a patient whose heart is to be monitored; attachment means on one end of said line releasably attaching it to the transducer assembly; attachment means on an opposite end of said line for attaching it to the patient's chest at the level of the right atrium of the heart; and a small bubble level on said line between its ends to indicate whether it is horizontal.
Claim 2
Dependent Claim
97 words
In combination with a vertically adjustable hemodynamic monitoring transducer assembly, a leveling device comprising: an elongated flexible line adapted to extend substantially taut between said transducer assembly and the chest of a patient whose heart is to be monitored; attachment means on one end of said line releasably attaching it to the transducer assembly; attachment means on an opposite end of said line for attaching it to the patient's chest at the level of the right atrium of the heart; and a small bubble level on said line between its ends to indicate whether it is horizontal.
Claim 3
Dependent Claim
19 words
A combination according to claim 1, wherein said attachment means on one end of the line is a loop.
Claim 4
Dependent Claim
21 words
A combination according to claim 2, wherein said attachment means on the opposite end of the line comprises a spring clip.
Claim 5
Dependent Claim
21 words
A combination according to claim 1, wherein said attachment means on the opposite end of the line comprises a spring clip.
Claim 6
Dependent Claim
111 words
In combination with a hemodynamic monitoring transducer assembly which is adjustable as a unit vertically on an IV stand, said transducer assembly including a strain gauge transducer and a stopcock having a hollow arm with an end cap that is removable to vent the transducer to the atmosphere, a leveling device comprising: an elongated flexible line carrying a small bubble level intermediate its ends; a loop on one end of said line inserted over said hollow arm of the stopcock in said transducer assembly; and means on an opposite end of said line for attaching the line to the patient's chest at the level of the right atrium of the heart.
Claim 7
Dependent Claim
111 words
In combination with a hemodynamic monitoring transducer assembly which is adjustable as a unit vertically on an IV stand, said transducer assembly including a strain gauge transducer and a stopcock having a hollow arm with an end cap that is removable to vent the transducer to the atmosphere, a leveling device comprising: an elongated flexible line carrying a small bubble level intermediate its ends; a loop on one end of said line inserted over said hollow arm of the stopcock in said transducer assembly; and means on an opposite end of said line for attaching the line to the patient's chest at the level of the right atrium of the heart.
Claim 8
Dependent Claim
35 words
A combination according to claim 5, wherein said means for attaching the opposite end of the line is a spring clip which is attachable to a post on an adhesive patch on the patient's chest.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-10-14 | 1989-04-15 | 1989-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-10-14 | 1993-04-15 | 1993-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-10-14 | 1997-04-15 | 1997-10-15 | $7700.00 | Window Closed / Lapsed |