Micro-infusion device and infusion set

Inventors: Edward Browka (Oneida, NY); James Fentress (Creedmoor, NC); Lawrence Farhat (Oceanside, CA); Robert Vasko (San Diego, CA); Theodore Mosler (Raleigh, NC); David Foshee (Apex, NC); George Mansour (Diamond Bar, CA)

Assignee: CAREFUSION 303, INC.

A61M5/1409 A61M5/142 A61M5/165 A61M5/16881 A61M39/24 A61M5/16827 A61M2005/1787 A61M5/284 A61M5/31511 A61M5/31578 A61M5/31596 A61M2039/0018 A61M39/225 A61M2039/242 A61M2205/502 A61M2205/6054 A61M2205/6072 A61M2240/00

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Quick Facts

Patent No.: US 12697430
App. No.: 17/379,845
Granted: Aug 4, 2026
Kind: B2

External Links

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Abstract

Systems and methods of micro-infusion of medical fluids are disclosed. Micro-infusion systems may include a pump, a patient interface, tubing between the pump and the interface, and a micro-infusion device along the tubing. A first portion of the tubing above the micro-infusion device is longer than a second portion of the tubing below the device. The micro-infusion device may include a chamber in-line with the tubing, a first valve between the chamber and the first portion of the tubing, a second valve between the chamber and the second portion of the tubing and a third valve between the chamber and a dump chamber. The second valve may be slidably disposed within the chamber. A medical fluid may be provided into the chamber that slides the second valve displacing another fluid in the chamber through the third valve into the dump chamber.

Claims (28)

1 . A method, comprising:

receiving, with an infusion pump, a set identifier that identifies a micro-infusion device comprising a first chamber disposed side by side and in parallel with a second chamber with each of the first chamber and the second chamber being linear;

determining at least one property associated with the micro-infusion device based on the received set identifier; and

operating the infusion pump based on the determined at least one property to provide a first fluid and a second fluid through the first chamber and an output port of the micro-infusion device,

wherein a portion of the first fluid in the first chamber is displaced into the second chamber of the micro-infusion device after the second fluid is received into the first chamber from a port directly coupled to the first chamber.

2 . The method of claim 1 , further comprising, operating the infusion pump to displace air in the second chamber through a vent in the second chamber with the portion of the first fluid.

3 . The method of claim 2 , further comprising, following the provision of the second fluid, operating the infusion pump to provide additional first fluid through the first chamber and the output port while the portion of the first fluid remains in the second chamber.

4 . The method of claim 3 , further comprising operating the infusion pump to remove the portion of the first fluid from the second chamber via a port in the second chamber.

5 . The method of claim 1 , wherein providing the first fluid through the first chamber of the micro-infusion device with the infusion pump comprises providing the first fluid through a first valve into the first chamber and to provide the first fluid out of the first chamber through a second valve that is disposed on a moveable piston.

6 . The method of claim 5 , wherein displacing, by providing the second fluid, the portion of the first fluid in the first chamber into the second chamber comprises pushing, with the second fluid, the moveable piston and the second valve toward the first valve.

7 . The method of claim 6 , wherein displacing, by providing the second fluid, the portion of the first fluid in the first chamber into the second chamber further comprises operating the infusion pump to push, with the moveable piston and the second valve, the portion of the first fluid through a third valve disposed between the first chamber and the second chamber.

8 . The method of claim 1 , wherein providing the second fluid into the first chamber from the port that is fluidly coupled to the first chamber comprises compressing a compressible member of the port to open a fluid pathway between a syringe and the first chamber and to close a fluid pathway between the first chamber and the output port.

9 . The method of claim 1 , wherein providing the second fluid from the first chamber through the output port with the infusion pump comprises operating one or more components of a pump cassette coupled to the infusion pump, wherein the pump cassette is a part of an IV set that includes the micro-infusion device, wherein the pump cassette comprises a bar code or an RFID tag including the set identifier.

10 . A non-transitory computer-readable medium comprising instructions executable by at least one processor to cause an infusion pump to:

receive a set identifier that identifies a micro-infusion device comprising a first chamber disposed side by side and in parallel with a second chamber with each of the first chamber and the second chamber being linear;

determine at least one property associated with the micro-infusion device based on the received set identifier; and

provide, based on the determined at least one property, a first fluid and a second fluid through the first chamber and an output port of the micro-infusion device; and

displacing a portion of the first fluid in the first chamber into the second chamber of the micro-infusion device after the second fluid is received into the first chamber from a port directly coupled to the first chamber.

11 . The non-transitory computer-readable medium of claim 10 , wherein the at least one property is a volume of the first chamber, and wherein the non-transitory computer-readable medium further comprises instructions executable by at least one processor to cause the infusion pump to prime an infusion line coupled to the micro-infusion device based at least on the volume.

12 . The non-transitory computer-readable medium of claim 10 , wherein the at least one property is a volume of the first chamber, and wherein the non-transitory computer-readable medium further comprises instructions executable by at least one processor to cause the infusion pump to flush an infusion line coupled to the micro-infusion device based at least on the volume.

13 . The non-transitory computer-readable medium of claim 10 , wherein receiving the set identifier comprises receiving a wireless signal from a device attached to a portion of an infusion set including the micro-infusion device.

14 . The non-transitory computer-readable medium of claim 10 , wherein the non-transitory computer-readable medium further comprises instructions executable by at least one processor to cause the infusion pump to displace air in the second chamber through a vent in the second chamber with the portion of the first fluid.

15 . The non-transitory computer-readable medium of claim 14 , wherein the non-transitory computer-readable medium further comprises instructions executable by at least one processor to cause the infusion pump to provide additional first fluid through the first chamber and the output port while the portion of the first fluid remains in the second chamber, and to remove the portion of the first fluid from the second chamber via a port in the second chamber.

16 . The non-transitory computer-readable medium of claim 10 , wherein the non-transitory computer-readable medium further comprises instructions executable by at least one processor to cause the infusion pump to provide the first fluid through a first valve into the first chamber and to provide the first fluid out of the first chamber through a second valve that is disposed on a moveable piston.

17 . The non-transitory computer-readable medium of claim 16 , wherein the non-transitory computer-readable medium further comprises instructions executable by at least one processor to cause the infusion pump to push, with the second fluid, the moveable piston and the second valve toward the first valve.

18 . The non-transitory computer-readable medium of claim 17 , wherein the non-transitory computer-readable medium further comprises instructions executable by at least one processor to cause the infusion pump to push, with the moveable piston and the second valve, the portion of the first fluid through a third valve disposed between the first chamber and the second chamber.

19 . The non-transitory computer-readable medium of claim 10 , wherein the non-transitory computer-readable medium further comprises instructions executable by at least one processor to cause the infusion pump to compress a compressible member of the port to open a fluid pathway between a syringe and the first chamber and to close a fluid pathway between the first chamber and the output port.

20 . The non-transitory computer-readable medium of claim 10 , wherein the non-transitory computer-readable medium further comprises instructions executable by at least one processor to cause operation of one or more components of a pump cassette coupled to the infusion pump, wherein the pump cassette is a part of an IV set that includes the micro-infusion device, wherein the pump cassette comprises a bar code or an RFID tag including the set identifier.