US5492537A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Surgical fluid monitor
Assignee: Aquintel Inc
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Filing: 1994-05-03
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Granted: 1996-02-20
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Expires: 2014-05-03
Abstract
Abstract A monitor to provide substantially real-time estimates of fluid absorbed by a patient during an endoscopic surgical procedure. The monitor weighs fluid administered to the patient intravenously, as well as that introduced through the endoscope for irrigation purposes. In addition, fluid recovered from the patient, the endoscope, the surgical drapes, and the floor is weighed. The total weight of fluid administered, reduced by automatically subtracting the total weight of fluid recovered, comprises the calculated fluid absorbed. Through manual entries and/or switch settings, totals of fluid administered and fluid collected are computed and maintained even as fluid sources are replaced and the fluid collector is emptied.
Inventors
- 👤 Thierry G. Vancaillie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:31
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/02; A61B5/02042; A61M; A61M1/00; A61M1/71; A61M1/77; A61M1/777; A61M3/00; A61M3/02; A61M3/0204; A61M3/0208; A61M3/0212; A61M3/022; A61M5/00; A61M5/14; A61M5/168; A61M5/16886; A61M5/16895; A61M2205/00; A61M2205/33; A61M2205/3379; A61M2205/3393; A61M2205/50; A61M2205/502; A61M2205/505; A61M2205/82; A61M2205/8206; A61M2209/00; A61M2209/08; A61M2209/082; A61M2209/084; A61M3/0279; A61M3/0283; A61M3/0287
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
150 words
A surgical fluid monitor, comprising weight-sensitive fluid support means for simultaneously suspending and weighing a fluid source and producing a source weight signal indicative of a fluid source weight, said fluid support means comprising at least one solid-state load cell; an irrigation fluid collector for collecting waste irrigation fluid; fluid collector scale means coupled to said irrigation fluid collector for weighing said irrigation fluid collector and producing a collector weight signal indicative of an irrigation fluid collector weight; computing means coupled to said source weight signal and said collector weight signal for calculating a fluid absorbed value, and for producing a display signal indicative of a calculated fluid absorbed value; coupling means for coupling said computing means to said source weight signal and said collector weight signal; and display means coupled to said computing means for transducing for human observation a display signal indicative of a calculated fluid absorbed value.
Claim 2
Dependent Claim
150 words
A surgical fluid monitor, comprising weight-sensitive fluid support means for simultaneously suspending and weighing a fluid source and producing a source weight signal indicative of a fluid source weight, said fluid support means comprising at least one solid-state load cell; an irrigation fluid collector for collecting waste irrigation fluid; fluid collector scale means coupled to said irrigation fluid collector for weighing said irrigation fluid collector and producing a collector weight signal indicative of an irrigation fluid collector weight; computing means coupled to said source weight signal and said collector weight signal for calculating a fluid absorbed value, and for producing a display signal indicative of a calculated fluid absorbed value; coupling means for coupling said computing means to said source weight signal and said collector weight signal; and display means coupled to said computing means for transducing for human observation a display signal indicative of a calculated fluid absorbed value.
Claim 3
Dependent Claim
30 words
The surgical fluid monitor of claim 1 wherein said irrigation fluid collector comprises a vacuum port, an endoscope drainage port, a floor drainage port, and an operating table drainage port.
Claim 4
Dependent Claim
23 words
The surgical fluid monitor of claim 1 wherein said irrigation fluid collector comprises a screen to separate tissue pieces from irrigation fluid drainage.
Claim 5
Dependent Claim
15 words
The surgical fluid monitor of claim 1 wherein said display means comprises a digital readout.
Claim 6
Dependent Claim
16 words
The surgical fluid monitor of claim 1 wherein said display means comprises a computer monitor screen.
Claim 7
Dependent Claim
14 words
The surgical fluid monitor of claim 1 wherein said coupling means comprises wireless means.
Claim 8
Dependent Claim
17 words
The surgical fluid monitor of claim 6 wherein said wireless means comprises a radio transmitter and receiver.
Claim 9
Dependent Claim
17 words
The surgical fluid monitor of claim 6 wherein said wireless means comprises an infrared transmitter and receiver.
Claim 10
Dependent Claim
13 words
The surgical fluid monitor of claim 8 wherein said wireless transmitter is battery-powered.
References Cited (Backward Citations)
US4449538A
Cited
US4995268A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1999-02-19 | 1999-08-21 | 2000-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-02-19 | 2003-08-21 | 2004-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-02-19 | 2007-08-21 | 2008-02-20 | $7700.00 | Window Closed / Lapsed |