Rapid infuser with advantageous flow path for blood and fluid warming

• US 10,485,936 B2
• Filed: 11/30/2016
• Issued: 11/26/2019
• Est. Priority Date: 11/30/2016
• Status: Active Grant

• Current Assignee: Belmont Instrument, LLC
• Original Assignee: Belmont Instrument, LLC
• Inventors: Landy, III, John J., Brusard, George G., Dion, Tristan
• Primary Examiner(s): Van, Quang T
• Application Number:
  US15/364,499
• Publication Number:
  US 20180147368A1
• Time in Patent Office: 1,091 Days
• Field of Search: 219629, 219635, 219 50, 219630, 219667, 219676, 219607, 219628, 219670, 604 613, 604 608, 604 29, 604291, 604508, 607108, 607 13, 607114, 607103, 607104, 607105, 607 21, 606 24, 606 27, 606 28, 700299, 700300, 392470-490, 210252, 210258, 2103216, 21032165, 210645, 210646
• CPC Class Codes: A61M 2205/3368 Temperature
• CPC Class Codes: A61M 5/36 with means for eliminating or preventing injection or infusion of air into body dialysis systems, blood oxygenators A61M1/14; haemofiltration equipment A61M1/34; automatic tube cut-off A61M39/281
• CPC Class Codes: A61M 5/44 having means for cooling or heating the devices or media

Abstract

Presented herein is a system for heating fluid, which, in certain embodiments, includes a fluid separator, a conduit, and a plurality of inductors. The system demonstrates a single flow path without compromising advantages of the existing blood warmers, such that the heat exchanger would not experience stagnant flow that may cause overheating of a local flow path.

Claims

1. A system for heating a fluid, the system comprising:

a fluid separator comprising an inlet nozzle and an outlet nozzle;

a conduit connected to the fluid separator, the conduit defining a central opening;

a primary inductor at least partially within the central opening; and

one or more secondary inductors within the conduit,

wherein the inlet nozzle directs an inlet flow to the conduit through the fluid separator,

wherein the conduit provides a single fluid flow path,

wherein each of the one or more secondary inductors is substantially parallel, the one or more secondary inductors being separated by gaps,

wherein, when the primary inductor is energized, the primary inductor generates magnetic flux passing through the central opening, and

wherein the outlet nozzle receives an outlet flow from the conduit through the fluid separator.

2. The system of claim 1, wherein the primary inductor comprises a coil.

3. The system of claim 1, wherein the primary inductor is a moving magnet.

4. The system of claim 1, wherein the conduit comprises a plurality of spacers which provides the gaps between the one or more secondary inductors.

5. The system of claim 1, wherein the fluid separator comprises a divider separating the inlet flow and the outlet flow.

6. The system of claim 1, wherein the fluid separator comprises a housing, and wherein a portion of the housing is transparent to infrared light to allow simultaneous infrared temperature detection of both the inlet flow and the outlet flow.

7. The system of claim 1, wherein the fluid separator, the conduit, and the one or more secondary inductors are included as part of a disposable set which is configured to co-act with the primary inductor.

8. The system of claim 1, wherein the fluid flow path has a conformation such that fluid is not in contact with the primary inductor.

9. The system of claim 1, wherein each of the gaps has a distance of 0.001″

to 0.1″

.

10. The system of claim 1, wherein the one or more secondary inductors transfers heat to fluid within the single flow path.

11. The system of claim 1, wherein the conduit comprises an insulator.

12. The system of claim 1, wherein each of the one or more secondary inductors comprises conductive material.

13. The system of claim 1, further comprising one or more temperature detectors positioned for simultaneous detection of a temperature of the inlet flow and the outlet flow.

14. A disposable unit of a system for heating a fluid, the disposable unit comprising:

a fluid separator comprising an inlet nozzle and an outlet nozzle;

a conduit connected to the fluid separator, the conduit defining a central opening; and

one or more secondary inductors within the conduit,

wherein the conduit defines a single fluid flow path,

wherein each of the one or more secondary inductors is substantially parallel, the one or more secondary inductors being separated by gaps.

15. A flow separator comprising:

a housing;

an inlet nozzle;

an outlet nozzle;

a divider separating an inlet chamber from an outlet chamber;

wherein the housing has a notch for securing the divider, and

wherein the inlet nozzle and the outlet nozzle are substantially parallel to each other.

16. A system comprising the flow separator of claim 15 and one or more temperature detectors positioned for simultaneous detection of a temperature of fluid in the inlet chamber and a temperature of fluid in the outlet chamber.