US3818895A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oligaemic shock assessment apparatus
Assignee: Individual
•
Filing: 1972-10-31
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Granted: 1974-06-25
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Expires: 1992-10-31
Abstract
Abstract The onset of oligaemic shock is assessed by monitoring urine flow and, additionally, deep body temperature. Urine flow is channelled by a bladder catheter to a tube which is repeatedly occluded for intervals terminated by accumulation of a predetermined quantity of urine or a time period, which quantity and period together represent a normal flow rate. A warning is given if the period terminates before the quantity is accumulated, thus representing abnormally low flow rate. Deep body temperature can be additionally monitored by provision of a thermoelectric transducer at the tip of the bladder catheter and, again, warning given for an abnormal value.
Inventors
- 👤 J Stewart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:05
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/01; A61B1/00; A61B1/12; A61B5/145; A61B5/14507; A61B5/20; A61B5/207; A61B5/208; A61M; A61M1/00; A61M1/70; A61M25/00; A61M25/0021; A61M25/0023; A61M25/0026; A61M25/0032
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
161 words
Oligaemic shock assessment apparatus comprising: a clamp to occlude a tube communicating a bladder catheter with a urine receiving means; a sensor comprising a means for detecting a predetermined quantity of urine accumulated in said tube, said sensor providing a first signal representing such detection when the tube is occluded by said clamp when reaching a predetermined value; a timer means for generating second signals representing termination of respective predetermined uniform time intervals, said timer being connected with said sensor to be reset in response to each of said first signals; release means for opening said clamp to drain accumulated urine from said tube, said release means being connected to at least said sensor for actuation in response to said first signals; and an indicator means operably connected with said sensor and timer for response to said first and second signals for indicating when said predetermined value of urine fails to accumulate in said tube during one of said predetermined intervals.
Claim 2
Dependent Claim
161 words
Oligaemic shock assessment apparatus comprising: a clamp to occlude a tube communicating a bladder catheter with a urine receiving means; a sensor comprising a means for detecting a predetermined quantity of urine accumulated in said tube, said sensor providing a first signal representing such detection when the tube is occluded by said clamp when reaching a predetermined value; a timer means for generating second signals representing termination of respective predetermined uniform time intervals, said timer being connected with said sensor to be reset in response to each of said first signals; release means for opening said clamp to drain accumulated urine from said tube, said release means being connected to at least said sensor for actuation in response to said first signals; and an indicator means operably connected with said sensor and timer for response to said first and second signals for indicating when said predetermined value of urine fails to accumulate in said tube during one of said predetermined intervals.
Claim 3
Dependent Claim
56 words
Apparatus according to claim 1 further comprising logic means connected with said sensor and timer to provide a third signal in response to the first occurrence of said first and second signals during each of said intervals, and wherein said release means is connected with said logic means for actuation in response to said third signal.
Claim 4
Dependent Claim
54 words
Apparatus according to claim 1 wherein said release means is connected only with said sensor for actuation in response to said first signals, and said apparatus further comprises a recorder connected with said sensor to record a respective representation of said predetermined value of accumulated urine in response of each of said first signals.
Claim 5
Dependent Claim
50 words
Apparatus according to claim 1 further comprising a bladder catheter for communication with said tube, which catheter has a thermoelectric transducer mounted thereon adjacent the catheter tip to detect urine temperature, and further indicator means responsive to said transducer to indicate urine temperature as a representation of deep body temperature.
Claim 6
Dependent Claim
34 words
Apparatus according to claim 4 wherein said catheter comprises a solid tip portion having a cavity formed in the side thereof, and said transducer is mounted on the proximal wall portion of said cavity.
Claim 7
Dependent Claim
36 words
Apparatus according to claim 4 wherein said catheter has a first lumen for flow or urine therethrough, and at least one further lumen through which are passed electrical connections between said transducer and further indicator means.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-06-24 | 1977-12-24 | 1978-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-24 | 1981-12-24 | 1982-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-24 | 1985-12-24 | 1986-06-25 | $7700.00 | Window Closed / Lapsed |