US Patent No: 6,520,930
Number of patents in Portfolio can not be more than 2000
Injectors, injector systems and injector control
Stats
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Feb 18, 2003
Issued date -
Apr 3, 2001
filing date -
09/826,430
serial no -
In Force
status
Importance
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Abstract
An injector for use in injecting a fluid in a medical injection procedure includes a drive having a motor to pressurize the fluid; a sensor to provide a measure of fluid pressure; and a pressure monitor in communication with the sensor and the drive to stop the motor using 4-quadrant control when the sensor communicates a measured pressure of at least a pressure hazard limit. The pressure monitor also limits power input to the motor to a power limit once the sensor communicates a measured pressure of at least a power limiting pressure. The power limiting pressure is below the pressure hazard limit.
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First Claim
Related Publications
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International Classification(s)
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Cited Art
| Patent Info | (Count) | # Cites | Year |
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| 4,812,724 Injector control | 52 | 1984 | |
| 5,300,031 Apparatus for injecting fluid into animals and disposable front loadable syringe therefor | 110 | 1991 | |
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| 5,803,712 Method of measuring an occlusion in an infusion device with disposable elements | 10 | 1995 | |
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| 6,262,544 Four quadrant motor operation using DC bus current sensing | 6 | 2000 | |
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| 5,868,710 Medical fluid injector | 71 | 1996 | |
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| 5,354,273 Delivery apparatus with pressure controlled delivery | 56 | 1992 | |
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| 5,808,203 Fluid pressure measurement devices | 58 | 1997 | |
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| 4,854,324 Processor-controlled angiographic injector device | 175 | 1988 | |
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| 6,225,904 Automatic sliding door system for refrigerator unit | 10 | 1999 | |
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| 4,494,051 Multi-quadrant brushless DC motor drive | 35 | 1982 | |
Patent Citation Ranking
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Aug 18, 2014 |
| Fee | Large entity fee | small entity fee | micro entity fee |
|---|---|---|---|
| Surcharge - 11.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
| Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
| Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |