US Patent No: 6,685,668
Number of patents in Portfolio can not be more than 2000
Closed-loop IV fluid flow control
Stats
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Feb 3, 2004
Issued date -
Jul 31, 2000
filing date -
09/628,846
serial no -
In Force
status
Importance
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Abstract
In a closed-loop process, a controller uses a flow sensor to monitor the flow of a medicinal fluid being infused into a patient, to achieve a desired rate of flow. A relatively inexpensive peristaltic pump or electronically controlled valve can be used to vary the flow of the medicinal fluid through a fluid line. A Y site within the fluid line includes an integral flow sensor having an orifice. The flow sensor includes proximal and distal pressure sensors disposed on opposite sides of the orifice to monitor the distal and proximal pressure, producing a signal indicative of the rate of flow of the medicinal fluid through the fluid line. A signal produced by the controller is input to a motor driving the pump or to the valve to vary the rate of flow as required to achieve the desired infusion rate of the medicinal fluid.
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First Claim
Related Publications
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International Classification(s)
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- [Patents Count]
Cited Art
| Patent Info | (Count) | # Cites | Year |
|---|---|---|---|
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| 5,342,298 Automated fluid pressure control system | 87 | 1992 | |
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| 5,429,601 Aspiration control system | 39 | 1993 | |
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| 4,278,085 Method and apparatus for metered infusion of fluids | 65 | 1979 | |
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| 4,925,444 Closed multi-fluid delivery system and method | 197 | 1987 | |
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| 4,447,224 Variable flow implantable infusion apparatus | 159 | 1982 | |
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| 4,443,218 Programmable implantable infusate pump | 191 | 1982 | |
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| 6,110,152 Medication cartridge for an electronic pen-type injector, infusion pump, electronic delivery device, or the like, and method of making the same | 113 | 1999 | |
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| 6,280,408 Controlled fluid transfer system | 69 | 1999 | |
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 3, 2015 |
| 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 |