Patent US5059174A successfully refreshed from Google Patents.
US5059174A
Expired / Lapsed
US
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Fluid infusion delivery system
Assignee: Individual
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Filing: 1990-08-23
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Granted: 1991-10-22
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Expires: 2010-08-23
Abstract
Abstract The pump of the infusion delivery system delivers fluid at a positive pressure. A restrictor is provided in the line to the IV catheter in order to maintain a flow rate at the catheter outlet in a range of from 0.1 to 5 milliliters per hour. The small amount of fluid infused is sufficient to maintain the vein open without backup of blood.
Inventors
- 👤 Vincent L. Vaillancourt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:08
CPC Classifications
A; A61; A61M; A61M5/00; A61M5/14; A61M5/142; A61M5/145; A61M2005/1401; A61M2005/1404; Y; Y10; Y10S; Y10S128/00; Y10S128/12
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
145 words
A fluid infusion delivery system comprising an IV catheter including a hub having an inlet port at one end and a hollow catheter attached to said hub and in communication with said port, said catheter being sized for placement into the vein; a fluid line extending from said hub and being in communication with said inlet port to deliver fluid thereto; a pump connected to said fluid line for continuously delivering fluid into said line under a continuous positive pressure; a restrictor in said line for producing a low flow rate in a range of from 0.1 to 5 milliliters per hour at a distal end of said line; and a Y-site connector in said line having one inlet branch connected to said pump for receiving fluid therefrom, a second inlet branch for intermittently receiving a drug and an outlet branch communicating with said hub.
Claim 2
Dependent Claim
145 words
A fluid infusion delivery system comprising an IV catheter including a hub having an inlet port at one end and a hollow catheter attached to said hub and in communication with said port, said catheter being sized for placement into the vein; a fluid line extending from said hub and being in communication with said inlet port to deliver fluid thereto; a pump connected to said fluid line for continuously delivering fluid into said line under a continuous positive pressure; a restrictor in said line for producing a low flow rate in a range of from 0.1 to 5 milliliters per hour at a distal end of said line; and a Y-site connector in said line having one inlet branch connected to said pump for receiving fluid therefrom, a second inlet branch for intermittently receiving a drug and an outlet branch communicating with said hub.
Claim 3
Dependent Claim
16 words
A system as set forth in claim 1 wherein said restrictor is a capillary glass tube.
Claim 4
Dependent Claim
23 words
A system as set forth in claim 2 wherein said capillary glass tube has an inside diameter in the range of 0.0016 inches.
Claim 5
Dependent Claim
22 words
A system as set forth in claim 1 wherein said fluid pressure is in a range of from 1 to 15 psi.
Claim 6
Dependent Claim
19 words
A system as set forth in claim 1 wherein said restrictor is disposed between said line and said hub.
Claim 7
Dependent Claim
24 words
A system as set forth in claim 1 wherein said flow rate is in the range of from 0.1 to 1 milliliter per hour.
Claim 8
Dependent Claim
80 words
A system as set forth in claim 1 which further includes a check valve dividing said second inlet branch into a first chamber for receiving a drug and a second chamber in communication with said hub and a rubber septum on said inlet branch for sealing said first chamber, said septum being sized to permit piercing of a syringe needle therethrough for infusion of a drug into said first chamber under a pressure sufficient to pass through said check valve.
Claim 9
Dependent Claim
18 words
A system as set forth in claim 1 wherein said restrictor is disposed downstream of said Y-site connector.
Claim 10
Dependent Claim
99 words
A fluid delivery apparatus for a fluid infusion delivery system comprising a fluid delivery line; a pump for delivering fluid under a positive fluid pressure into said delivery line; a Y-site connector in said line having one inlet branch connected to said pump for receiving fluid therefrom, an outlet branch for conveying fluid into said line receiving a drug for infusion into said line; and a restrictor in said delivery line for producing a continuous low flow rate of from 0.1 to 5 milliliters per hour at a distal end of said delivery line under said positive fluid pressure.
Claim 11
Dependent Claim
99 words
A fluid delivery apparatus for a fluid infusion delivery system comprising a fluid delivery line; a pump for delivering fluid under a positive fluid pressure into said delivery line; a Y-site connector in said line having one inlet branch connected to said pump for receiving fluid therefrom, an outlet branch for conveying fluid into said line receiving a drug for infusion into said line; and a restrictor in said delivery line for producing a continuous low flow rate of from 0.1 to 5 milliliters per hour at a distal end of said delivery line under said positive fluid pressure.
Claim 12
Dependent Claim
24 words
An apparatus as set forth in claim 9 wherein said flow rate is in the range of from 0.1 to 1 milliliter per hour.
Claim 13
Dependent Claim
16 words
An apparatus as set forth in claim 9 wherein said restrictor is a capillary glass tube.
Claim 14
Dependent Claim
22 words
An apparatus as set forth in claim 9 wherein said fluid pressure is in a range of from 1 to 15 psi.
Claim 15
Dependent Claim
19 words
An apparatus as set forth in claim 9 wherein said pump is sized for portability with an ambulatory patient.
Claim 16
Independent Claim
79 words
A method of infusing fluid into a vein comprising the steps of placing an IV catheter in the vein; attaching a fluid delivery line to the catheter; continuously delivering fluid into said line under a positive pressure; restricting the flow in the line to a flow rate of from 0.1 to 5 milliliters per hour to maintain a positive pressure at the catheter or vein interface; and intermittently delivering a drug into said line for infusion into the vein.
Claim 17
Independent Claim
79 words
A method of infusing fluid into a vein comprising the steps of placing an IV catheter in the vein; attaching a fluid delivery line to the catheter; continuously delivering fluid into said line under a positive pressure; restricting the flow in the line to a flow rate of from 0.1 to 5 milliliters per hour to maintain a positive pressure at the catheter or vein interface; and intermittently delivering a drug into said line for infusion into the vein.
Claim 18
Dependent Claim
20 words
A method as set forth in claim 14 wherein said flow rate is from 0.1 to 1 milliliters per hour.
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) | 1994-10-21 | 1995-04-22 | 1995-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-10-21 | 1999-04-22 | 1999-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-10-21 | 2003-04-22 | 2003-10-22 | $7700.00 | Window Closed / Lapsed |