Infusion pumps

• US 9,498,573 B2
• Filed: 09/24/2010
• Issued: 11/22/2016
• Est. Priority Date: 09/24/2010
• Status: Active Grant

• Current Assignee: Medtronic Minimed Incorporated (Medtronic Plc)
• Original Assignee: PerQFlo, LLC
• Inventors: Smith, Roger E., Causey, James, Gibson, Scott R., Ring, Lawrence Scott
• Primary Examiner(s): DeSanto, Matthew F
• Application Number:
  US12/890,166
• Publication Number:
  US 20120078181A1
• Time in Patent Office: 2,251 Days
• Field of Search: 604131-155, 604/65, 604/66
• US Class Current: 1/1
• CPC Class Codes: A61M 2005/1402 Priming
• CPC Class Codes: A61M 2005/14252 with needle insertion means
• CPC Class Codes: A61M 2005/14268 with a reusable and a disposable component
• CPC Class Codes: A61M 2005/1585 Needle inserters
• CPC Class Codes: A61M 2005/16863 Occlusion detection
• CPC Class Codes: A61M 2005/16868 Downstream occlusion sensors
• CPC Class Codes: A61M 2205/073 Syringe, piston type
• CPC Class Codes: A61M 2205/12 with interchangeable cassettes forming partially or totally the fluid circuit
• CPC Class Codes: A61M 2205/13 with means for the detection of operative contact with patient, e.g. lip sensor
• CPC Class Codes: A61M 2205/14 Detection of the presence or absence of a tube, a connector or a container in an apparatus
• CPC Class Codes: A61M 2205/18 with alarm
• CPC Class Codes: A61M 2205/276 preventing unwanted use
• CPC Class Codes: A61M 2205/3306 Optical measuring means
• CPC Class Codes: A61M 2205/3317 Electromagnetic, inductive or dielectric measuring means
• CPC Class Codes: A61M 2205/3365 Rotational speed
• CPC Class Codes: A61M 2205/3368 Temperature
• CPC Class Codes: A61M 2205/3372 Temperature compensation
• CPC Class Codes: A61M 2205/50 with microprocessors or computers
• CPC Class Codes: A61M 2205/502 User interfaces, e.g. screens or keyboards
• CPC Class Codes: A61M 2205/52 with memories providing a history of measured variating parameters of apparatus or patient
• CPC Class Codes: A61M 2205/6027 : Electric-conductive bridges closing detection circuits, with or without identifying elements, e.g. resistances, zener-diodes
• CPC Class Codes: A61M 2205/6054 : Magnetic identification systems
• CPC Class Codes: A61M 2205/6063 : Optical identification systems
• CPC Class Codes: A61M 2205/8206 : battery-operated
• CPC Class Codes: A61M 2205/8237 : Charging means
• CPC Class Codes: A61M 5/1413 : Modular systems comprising interconnecting elements
• CPC Class Codes: A61M 5/14216 : Reciprocating piston type
• CPC Class Codes: A61M 5/14248 : of the skin patch type
• CPC Class Codes: A61M 5/1452 : pressurised by means of pistons
• CPC Class Codes: A61M 5/14546 : Front-loading type injectors
• CPC Class Codes: A61M 5/16804 : Flow controllers
• CPC Class Codes: A61M 5/1684 : by detecting the amount of infusate remaining, e.g. signalling end of infusion
• CPC Class Codes: A61M 5/16854 : by monitoring line pressure
• CPC Class Codes: H02J 2310/23 : The load being a medical device, a medical implant, or a life supporting device
• CPC Class Codes: H02J 7/0029 : with safety or protection devices or circuits
• CPC Class Codes: H02J 7/00302 : Overcharge protection
• CPC Class Codes: H02J 7/00309 : Overheat or overtemperature protection
• CPC Class Codes: H02J 7/0044 : specially adapted for holding portable devices containing batteries H02J7/0045 takes precedence
• CPC Class Codes: H02J 7/007192 : in response to temperature

Abstract

Ambulatory infusion pumps, pump assemblies, cartridges, baseplates, cannulas, insertion tools, and related components as well as combinations thereof and related methods.

Claims

1. An infusion pump system, comprising:

an infusion pump assembly including a housing with a to face and a bottom face that defines an outer perimeter, a cartridge receiving area in the housing, a medicament cartridge insertion opening extending though the bottom face and located inwardly of the outer perimeter and in alignment with the cartridge receiving area, a top opening extending through the top face, a linearly movable pusher, and a drive mechanism, including a motor, that drives the pusher linearly from a retracted position to an extended position;

a medicament cartridge including a plunger that is not secured to the pusher, a through-bore and a medicament reservoir having an outlet port; and

a baseplate configured to be attached to the bottom face of the housing such that the baseplate at least partially covers the insertion opening;

wherein the infusion pump assembly and the medicament cartridge are respectively configured such that the plunger is operably aligned with the pusher and a portion of the medicament cartridge is located in the top opening when the medicament cartridge is positioned in the cartridge receiving area and the baseplate is attached to the housing.

2. A system as claimed in claim 1, wherein the baseplate has a baseplate opening aligned with the through-bore, the system further comprising:

a cannula extending from the through-bore and through the baseplate opening, and having an opening communicating with the outlet port.

3. A system as claimed in claim 2, wherein the baseplate defines a bottom surface and includes a first adhesive on the bottom surface adjacent to the baseplate opening and a second adhesive spaced a distance away from the baseplate opening, and the first adhesive more aggressively adheres to human skin than the second adhesive.

4. A system as claimed in claim 2, wherein the baseplate defines a bottom surface and includes adhesive on the bottom surface.

5. A system as claimed in claim 1, wherein the baseplate has a fluid connector extending up into the through-bore and an opening that communicates with an outlet port of the reservoir.

6. A system as claimed in claim 5, wherein the baseplate has a fluid pathway from the fluid connector to an edge of the baseplate and a fluid channel that communicates a distal end of the fluid pathway to an infusion set.

7. A system as claimed in claim 1, wherein

the medicament cartridge a fluid force deflectable part of a fluid force sensor assembly in fluid communication with the through-bore;

and

the infusion pump assembly includes a fixed part of the fluid force sensor assembly.

8. A system as claimed in claim 7, wherein the fluid force deflectable part includes a magnet attached to a flexible diaphragm.

9. A system as claimed in claim 1, wherein the medicament cartridge includes a barrel and a manifold attached to the barrel, the plunger is positioned in the barrel and the through-bore is positioned in the manifold.

10. A system as claimed in claim 1, wherein the housing has a bottom surface and the baseplate at least substantially covers the bottom surface of the housing.

11. A system as claimed in claim 1, wherein the baseplate has a plug that extends into the through-bore and plugs the outlet port such that the baseplate defines a medicament non-delivery baseplate.

12. An infusion pump system, comprising:

an infusion pump assembly including a housing with a to face and a bottom face that defines an outer perimeter, a cartridge receiving area within the housing, a medicament cartridge insertion opening extending though the bottom face and located inwardly of the outer perimeter and in alignment with the cartridge receiving area, a top opening extending through the top face, a pusher, and a drive mechanism, including a motor, that drives the pusher;

a medicament cartridge, including a plunger, a through-bore and a medicament reservoir having an outlet port, configured to be inserted through the insertion opening; and

a baseplate configured to be removably attached to the bottom face of the infusion pump assembly housing, such that the baseplate at least partially covers the insertion opening;

wherein the infusion pump assembly and the medicament cartridge are respectively configured such that the plunger is operably aligned with the pusher and a portion of the medicament cartridge is located in the top opening when the medicament cartridge is positioned in the cartridge receiving area and the baseplate is attached to the housing.

13. A system as claimed in claim 12, wherein the baseplate completely covers the bottom face of the infusion pump assembly housing.

14. An infusion pump system, comprising:

an infusion pump assembly including a housing, a cartridge receiving area in the housing, a pusher, and a drive mechanism, including a motor, that drives the pusher;

a medicament cartridge including an inner surface defining a medicament reservoir, a through-bore, an outlet port associated with the medicament reservoir, and a plunger having a forward sealing o-ring in contact with the inner surface that defines the medicament reservoir and a rear friction control device in contact with the inner surface that defines the medicament reservoir that is formed of a different material than that of the forward sealing o-ring and is spaced a distance rearward from the forward sealing o-ring; and

a baseplate configured to be attached to the housing;

wherein the infusion pump assembly and the medicament cartridge are respectively configured such that the plunger is operably aligned with the pusher when the medicament cartridge is positioned in the cartridge receiving area and the baseplate is attached to the housing; and

wherein, when the pusher is pushing the plunger, the coefficient of friction between the rear friction control device and the inner surface is less than the coefficient of friction between the forward sealing o-ring and the inner surface.

15. A system as claimed in claim 14, wherein the forward friction control device is formed from rubber.

16. A system as claimed in claim 15, wherein the rear friction control device is formed from silicone or polytetrafluoroethylene.

17. A system as claimed in claim 14, wherein the rear friction control device is an o-ring.

18. A system as claimed in claim 14, wherein the plunger has a body portion and the rear friction control device is overmolded on the body portion.