US5030197A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for driving blood pump
Assignee: Shinsangyo Kaihatsu KK
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Filing: 1990-01-23
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Granted: 1991-07-09
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Expires: 2010-01-23
Abstract
Abstract An apparatus for driving a blood pump such as an artificial pump. The apparatus comprises a pressure pulse generator for producing pressure pulses, a pressure detector for detecting the pressure produced by the pressure pulse generator, and an electrical control unit (ECU) consisting of a microcomputer. The ECU estimates the pressure range obtained after the pressure is switched from a positive value to a negative value or vice versa, from the pressure obtained before the pressure is switched. The ECU then compares the pressure obtained after the switch of the pressure with the pressure range to determine whether the pressure is abnormal or not.
Inventors
- 👤 Toshinobu Kageyama
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:39
CPC Classifications
A; A61; A61M; A61M60/00; A61M60/50; A61M60/585; A61M60/10; A61M60/122; A61M60/196; A61M60/508; A61M60/515; A61M60/531; A61M60/538; A61M60/546; A61M60/554; A61M2205/00; A61M2205/33; A61M2205/3331; A61M2205/3334; A61M60/126; A61M60/148; A61M60/20; A61M60/247; A61M60/253; A61M60/268; A61M60/295; A61M60/40; A61M60/424; A61M60/427; A61M60/43
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
108 words
An apparatus for driving a blood pump, comprising: a pressure pulse generator for producing pressure pulses; a pressure-detecting means for detecting the pressure produced by the pressure pulse generator; an estimating means which reads the output value from the pressure-detecting means before the pressure of the pressure pulses is switched to another value and estimates the range of pressures obtained after the switch of the pressure from said output value produced before the switch of the pressure; and a determining means which compares the output value produced from the pressure-detecting means after the switch of the pressure with the pressure range and determines whether the pressure is abnormal.
Claim 2
Independent Claim
108 words
An apparatus for driving a blood pump, comprising: a pressure pulse generator for producing pressure pulses; a pressure-detecting means for detecting the pressure produced by the pressure pulse generator; an estimating means which reads the output value from the pressure-detecting means before the pressure of the pressure pulses is switched to another value and estimates the range of pressures obtained after the switch of the pressure from said output value produced before the switch of the pressure; and a determining means which compares the output value produced from the pressure-detecting means after the switch of the pressure with the pressure range and determines whether the pressure is abnormal.
Claim 3
Independent Claim
87 words
An apparatus for driving a blood pump, comprising: a pressure pulse generator for producing pressure pulses; a pressure-detecting means for detecting the pressure produced by the pressure pulse generator; an estimating means which estimates the pressure range obtained after the pressure is switched to another value from the time for which the pressure pulses were applied; and a determining means which compares the output value produced from the pressure-detecting means after the switch of the pressure with the pressure range and determines whether the pressure is abnormal.
Claim 4
Independent Claim
87 words
An apparatus for driving a blood pump, comprising: a pressure pulse generator for producing pressure pulses; a pressure-detecting means for detecting the pressure produced by the pressure pulse generator; an estimating means which estimates the pressure range obtained after the pressure is switched to another value from the time for which the pressure pulses were applied; and a determining means which compares the output value produced from the pressure-detecting means after the switch of the pressure with the pressure range and determines whether the pressure is abnormal.
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) | 1994-07-08 | 1995-01-07 | 1995-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-07-08 | 1999-01-07 | 1999-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-07-08 | 2003-01-07 | 2003-07-09 | $7700.00 | Window Closed / Lapsed |