CA2601128A1 - Infusion fluid heat exchanger and cartridge - Google Patents
Infusion fluid heat exchanger and cartridge Download PDFInfo
- Publication number
- CA2601128A1 CA2601128A1 CA002601128A CA2601128A CA2601128A1 CA 2601128 A1 CA2601128 A1 CA 2601128A1 CA 002601128 A CA002601128 A CA 002601128A CA 2601128 A CA2601128 A CA 2601128A CA 2601128 A1 CA2601128 A1 CA 2601128A1
- Authority
- CA
- Canada
- Prior art keywords
- cartridge
- air
- fluid
- trap
- flow path
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 0 CC(*=CC(C=*)=C*=N)=C Chemical compound CC(*=CC(C=*)=C*=N)=C 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/44—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests having means for cooling or heating the devices or media
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
- A61M1/02—Blood transfusion apparatus
- A61M1/0281—Apparatus for treatment of blood or blood constituents prior to transfusion, e.g. washing, filtering or thawing
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
- A61M5/168—Means for controlling media flow to the body or for metering media to the body, e.g. drip meters, counters ; Monitoring media flow to the body
- A61M5/172—Means for controlling media flow to the body or for metering media to the body, e.g. drip meters, counters ; Monitoring media flow to the body electrical or electronic
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/36—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests with means for eliminating or preventing injection or infusion of air into body
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M2205/00—General characteristics of the apparatus
- A61M2205/12—General characteristics of the apparatus with interchangeable cassettes forming partially or totally the fluid circuit
- A61M2205/127—General characteristics of the apparatus with interchangeable cassettes forming partially or totally the fluid circuit with provisions for heating or cooling
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M2206/00—Characteristics of a physical parameter; associated device therefor
- A61M2206/10—Flow characteristics
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M2206/00—Characteristics of a physical parameter; associated device therefor
- A61M2206/10—Flow characteristics
- A61M2206/14—Static flow deviators in tubes disturbing laminar flow in tubes, e.g. archimedes screws
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
- A61M5/168—Means for controlling media flow to the body or for metering media to the body, e.g. drip meters, counters ; Monitoring media flow to the body
- A61M5/16831—Monitoring, detecting, signalling or eliminating infusion flow anomalies
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/36—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests with means for eliminating or preventing injection or infusion of air into body
- A61M5/365—Air detectors
Abstract
The present invention relates to a system for increasing the temperature of a fluid being infused into a patient's body while the infusion is taking place.
The present invention also provides for improved monitoring of air in the infusion system such to prevent the introduction of air into the patient's body receiving the fluid infusion. The present invention also provides for a system pump which provides a variable flow rate that serves a vast amount of infusion needs and purposes. A disposable cartridge in accordance with the present invention will allow for the efficient transfer of heat energy to the fluid being infused into the patient's body. The cartridge will further ensure that deleterious amounts of air will not be introduced into the patient's body.
The present invention also provides for improved monitoring of air in the infusion system such to prevent the introduction of air into the patient's body receiving the fluid infusion. The present invention also provides for a system pump which provides a variable flow rate that serves a vast amount of infusion needs and purposes. A disposable cartridge in accordance with the present invention will allow for the efficient transfer of heat energy to the fluid being infused into the patient's body. The cartridge will further ensure that deleterious amounts of air will not be introduced into the patient's body.
Claims (37)
1. A disposable fluid infusion cartridge comprising a. a heat exchanger comprising upper and lower aspects and an internal heat exchange zone defined by a first and second plurality of overlapping fins, creating a substantially uniform flow path depth, wherein each fin has a ratio of height to width of at least 1:2, whereby fluid enters the lower aspect of the heat exchanger via a lower port and fills a lower flow cavity across the width of the heat exchange zone prior to flowing through the heat exchange zone and out an upper port at the upper aspect of the heat exchanger; and b. an air trap comprising upper and lower aspects, comprising an inner surface, which receives the fluid from the heat exchanger comprising a fluid flow disrupter, and a purging mechanism for purging air from the air trap and preventing air from passing beyond the air trap.
2. The cartridge of claim 1 wherein the ratio of the height of the fins to the width of the fins is from about 1:2 to 1:50.
3. The cartridge of claim 1 wherein the ratio of the height of the fins to the width of the fins is from about 1:4 to 1:25.
4. The cartridge of claim 1 wherein the ratio of the height of the fins to the width of the fins is from about 1:5 to 1:10.
5. The cartridge of claim 1 wherein the height of the fins ranges from about 0.25 inches to about 1 inch.
6. The cartridge of claim 1 wherein the ratio of the flow path depth to the height of the fins is from about 0.01 to 1:1.
7. The cartridge of claim 1 wherein the flow path of the heat exchange zone has a depth of about 0.01 inches to about 0.25 inches.
8. The cartridge of claim 1 wherein the distance between a first and second fin within the same plurality of fins is from about 0.25 inches to about 1 inch.
9. The cartridge of claim 1 wherein the heat exchanger is comprised of two symmetric units fixed together.
10. The cartridge of claim 1 wherein the heat exchanger is comprised of a single unit.
11. The cartridge of claim 1 wherein the heat exchanger is comprised of at least two units fixed together.
12. The cartridge of claim 1 wherein the air-trap is cylindrical.
13. The cartridge of claim 12 wherein the air-trap is taller than it is wide.
14. The cartridge of claim 1 wherein the fluid flow disrupter extends from the inner surface of the lower aspect of the air-trap.
15. The cartridge of claim 1 wherein the purging mechanism utilizes an ultrasonic detection mechanism to monitor fluid volume in the air-trap.
16. The cartridge of claim 15 wherein the purging mechanism uses a valve at a fluid output port and a valve at an air output port working in tandem to force air out the air output port as the volume of the fluid within the air-trap increases, to a pre-determined level.
17. The cartridge of claim 1 wherein the air-trap can effectively remove air when moved off vertical axis up to 45°.
18. The cartridge of claim 1 wherein the heat exchanger has a surface of area exposed to a heating element is from about 30 square inches to 45 square inches.
19. The cartridge of claim 18 wherein the surface area is substantially flat across said area.
20. A disposable infusion cartridge comprising:
a. a heat exchanger comprising an enclosed uniform tortious flow path containing short segments of linear flow length, creating a ribbon of fluid, greater in width than in segments of linear flow length, for enhanced exposure to the inner surface of the heat exchanger; and b. a cylindrical air-trap for removing air from the fluid comprising an upper and lower aspect and further comprising an upper fluid input port, a lower fluid output port, an upper air output port, and a fluid flow disrupter wherein the air-trap creates a vortex of fluid and the fluid flow disrupter creates a pressure differential at the fluid output port for drawing fluid out of the air-trap.
a. a heat exchanger comprising an enclosed uniform tortious flow path containing short segments of linear flow length, creating a ribbon of fluid, greater in width than in segments of linear flow length, for enhanced exposure to the inner surface of the heat exchanger; and b. a cylindrical air-trap for removing air from the fluid comprising an upper and lower aspect and further comprising an upper fluid input port, a lower fluid output port, an upper air output port, and a fluid flow disrupter wherein the air-trap creates a vortex of fluid and the fluid flow disrupter creates a pressure differential at the fluid output port for drawing fluid out of the air-trap.
21. The cartridge of claim 20 wherein the ratio of the length of the short segments of the tortious flow path to the width of the flow path is from about 1:2 to 1:50.
22. The cartridge of claim 20 wherein the ratio of the length of the short segments of the tortious flow path to the width of the flow path is from about 1:4 to 1:25.
23. The cartridge of claim 20 wherein the ratio of the length of the short segments of the tortious flow path to the width of the flow path is from about 1:5 to 1:10.
24. The cartridge of claim 20 wherein the length of the short segments of the tortious path are from about 0.25 inches to about 1 inch in length.
25. The cartridge of claim 20 wherein the depth of the tortious flow path has a ratio of depth to length of the short segments from about 0.01 to 1:1.
26. The cartridge of claim 20 wherein the tortious flow path of the heat exchange zone has a depth of about 0.01 inches to about 0.25 inches.
27. The cartridge of claim 20 wherein the tortious flow path is created via at least one plurality of fins.
28. The cartridge of claim 20 wherein the distance between a first and second fin within a plurality of fins is from about 0.25 inches to about 0.5 inches.
29. The cartridge of claim 20 wherein the fluid flow disrupter extends from the inner surface of the air-trap.
30. The cartridge of claim 20 wherein the purging mechanism utilizes an ultrasonic detection mechanism to monitor fluid height.
31. The cartridge of claim 30 wherein the purging mechanism uses a valve at the fluid output port and a valve at the air output port working in tandem to force air out the air output port as the volume of the fluid within the air-trap increases.
32. The cartridge of claim 31 wherein the valves of the purging mechanism are controlled by monitoring mechanisms contained within a pump housing reversibly attachable to the cartridge.
33. The cartridge of claim 20 wherein the air-trap can effectively remove air when moved off vertical axis up to 45 .
34. The cartridge of claim 20 wherein the heat exchanger has a surface of area exposed to a heating element is from about 30 square inches to about 45 square inches.
35. The cartridge of claim 20 wherein the surface area is substantially flat across said area.
36. The cartridge of claim 20 further comprising at least one pressure monitor for monitoring the pressure of fluid within the disposable cartridge.
37. The cartridge of claim 20 further comprising at least on bubble detector for monitoring the presence of a bubble within fluid passing through the disposable cartridge.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/082,260 | 2005-03-17 | ||
US11/082,260 US7563248B2 (en) | 2005-03-17 | 2005-03-17 | Infusion fluid heat exchanger and cartridge |
PCT/US2006/008276 WO2006101743A2 (en) | 2005-03-17 | 2006-03-09 | Infusion fluid heat exchanger and cartridge |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2601128A1 true CA2601128A1 (en) | 2006-09-28 |
CA2601128C CA2601128C (en) | 2010-07-20 |
Family
ID=37011339
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA2601128A Active CA2601128C (en) | 2005-03-17 | 2006-03-09 | Infusion fluid heat exchanger and cartridge |
Country Status (9)
Country | Link |
---|---|
US (8) | US7563248B2 (en) |
EP (3) | EP2497512B1 (en) |
JP (3) | JP4493713B2 (en) |
CN (1) | CN101180016B (en) |
AU (3) | AU2006227836B2 (en) |
CA (1) | CA2601128C (en) |
ES (2) | ES2385351T3 (en) |
MX (1) | MX2007011417A (en) |
WO (1) | WO2006101743A2 (en) |
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2005
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