IP Library Granted Patent US 12,397,109
Granted Patent B2
US 12,397,109 · App. 18/310,881 · Granted Aug 26, 2025

Ambulatory infusion pumps and assemblies for use with same

Inventors: Roger E. Smith (Ivins, UT); Tom Xiaobai He (Santa Clarita, CA)
Assignee: MEDTRONIC MINIMED, INC.
A61M5/16804A61M5/14216A61M5/14244A61M5/14248A61M5/158A61M5/16813A61M5/16881A61M2005/14268A61M2005/1585A61M2205/18A61M2205/50A61M2205/583A61M2205/8206
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Quick Facts
Patent No.
US 12,397,109
App. No.
18/310,881
Granted
Aug 26, 2025
Kind
B2
Abstract

Ambulatory infusion pumps, medicament reservoirs, and medicament sealing assemblies, including a variety of trocar seal assemblies and fill plug seal assemblies, plus related components, as well as component combinations and related methods.

Claims (40)

1. An apparatus for a fluid delivery system, the apparatus comprising:

a medicament reservoir;

a reservoir outlet configured for fluid communication with the medicament reservoir; and

a trocar seal assembly integrated into the apparatus and associated with the reservoir outlet, the trocar seal assembly comprising:

a drum having a drum lumen extending therethrough;

an inlet configured for fluid communication with the reservoir outlet;

a cannula having a lumen configured for fluid communication with the inlet; and

a trocar with a rod and a sharp end that is movable through the drum lumen and relative to the reservoir outlet between a first position in which the trocar is at least partially disposed within the cannula lumen and a second position in which the trocar is not disposed within the cannula lumen.

2. The apparatus of claim 1 , wherein, when the trocar is in the first position, the trocar limits medicament flow through the reservoir outlet to the cannula lumen, and when the trocar is in the second position, the trocar permits medicament flow from the reservoir outlet to the cannula lumen.

3. The apparatus of claim 1 , wherein the trocar seal assembly further comprises a cannula insert at least partially disposed within the cannula lumen, and wherein the trocar is moveable through the cannula insert.

4. The apparatus of claim 3 , wherein the cannula insert is configured to guide the trocar into place within the cannula lumen and prevent the sharp end of the trocar from piercing the cannula.

5. The apparatus of claim 1 , wherein the trocar seal assembly comprises a septum.

6. The apparatus of claim 5 , wherein the septum is adjacent to the drum or integral with the drum.

7. The apparatus of claim 1 , wherein the trocar is removable from the remainder of the trocar seal assembly.

8. An infusion pump comprising:

the apparatus of claim 1 ; and

a fluid displacement device that drives medicament from the reservoir.

9. The infusion pump of claim 8 , wherein the fluid displacement device includes a plunger within the reservoir and a drive mechanism that drives the plunger.

10. The infusion pump of claim 9 , wherein the drive mechanism comprises a motor.

11. An apparatus for a fluid delivery system, the apparatus comprising:

a reservoir configured to retain fluid therein;

a reservoir outlet in fluid communication with the reservoir; and

a seal assembly comprising:

a seal having a seal lumen extending therethrough;

an inlet configured for fluid communication with the reservoir outlet;

a cannula having a cannula lumen configured for fluid communication with the inlet; and

an elongate rod that is movable through the seal lumen between a first position and a second position, wherein:

in the first position, the elongate rod is at least partially disposed within the cannula lumen such that the elongate rod limits fluid flow from the inlet into the cannula lumen, and

in the second position, the elongate rod is not disposed within the cannula lumen such that fluid flow is permitted from the inlet into the cannula lumen.

12. The apparatus of claim 11 , wherein the second position of the elongate rod is axially retracted relative to the first position of the elongate rod.

13. The apparatus of claim 11 , wherein the seal assembly further comprises a cannula insert at least partially disposed within the cannula lumen, and wherein the elongate rod is moveable through the cannula insert.

14. The apparatus of claim 13 , wherein the cannula insert is configured to guide the elongate rod into place within the cannula lumen and prevent a distal end of the elongate rod from piercing the cannula.

15. The apparatus of claim 11 , wherein the seal assembly comprises a septum.

16. The apparatus of claim 15 , wherein the septum is adjacent to the seal or integral with the seal.

17. The apparatus of claim 11 , wherein the elongate rod is removable from the remainder of the seal assembly.

18. An infusion pump comprising:

the apparatus of claim 11 ; and

a fluid displacement device that drives fluid from the reservoir.

19. The infusion pump of claim 18 , wherein the fluid displacement device includes a plunger within the reservoir and a drive mechanism that drives the plunger.

20. The infusion pump of claim 19 , wherein the drive mechanism comprises a motor.

Assignments (5)
SECURITY INTEREST Recorded Jan 16, 2026
From: MEDTRONIC MINIMED, INC.; COMPANION MEDICAL, INC.
To: CITIBANK, N.A.
Reel/Frame 074394/0237 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded May 4, 2023
From: HE, TOM
To: INCUMED, LLC
Reel/Frame 063525/0725 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded May 4, 2023
From: INCUMED, LLC
To: PERQFLO, LLC
Reel/Frame 063525/0730 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded May 4, 2023
From: SMITH, ROGER E.
To: PERQFLO, LLC
Reel/Frame 063525/0735 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded May 4, 2023
From: PERQFLO, LLC
To: MEDTRONIC MINIMED, INC.
Reel/Frame 063525/0741 →
Continuity (4)
Continuation 16943418 · Jul 30, 2020
Division 15430513 · Feb 12, 2017
Provisional Application 62294941 · Feb 12, 2016
Related Publication 20230270936A1 · Aug 31, 2023
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