Implantable infusion devices and associated methods

• US 9,981,117 B2
• Filed: 03/26/2014
• Issued: 05/29/2018
• Est. Priority Date: 04/27/2009
• Status: Active Grant

• Current Assignee: Medtronic Minimed Incorporated (Medtronic Plc)
• Original Assignee: Medallion Therapeutics, Inc.
• Inventors: Brandt, William A., Villegas, Daniel Hernandez
• Primary Examiner(s): Mehta, Bhisma
• Assistant Examiner(s): LEE, BRANDY SCOTT
• Application Number:
  US14/226,731
• Publication Number:
  US 20140207085A1
• Time in Patent Office: 1,525 Days
• CPC Class Codes: A61M 2039/0217 at least some chambers being stacked separated by another septum
• CPC Class Codes: A61M 2039/0226 having means for protecting the interior of the access site from damage due to the insertion of a needle
• CPC Class Codes: A61M 2039/0241 having means for filtering
• CPC Class Codes: A61M 2039/0244 having means for detecting an inserted needle
• CPC Class Codes: A61M 2205/3523 using telemetric means
• CPC Class Codes: A61M 2205/3561 local, e.g. within room or hospital
• CPC Class Codes: A61M 39/0208 Subcutaneous access sites for injecting or removing fluids transcutaneous access sites A61M39/0247; implantable infusion devices A61M5/14276
• CPC Class Codes: A61M 39/0247 Semi-permanent or permanent transcutaneous or percutaneous access sites to the inside of the body peritoneal dialysis catheters A61M1/285; tracheostomy devices A61M16/0465; measuring pressure within the body A61B5/03; colostomy devices A61F5/445; gastrotomy feeding tubes A61J15/0015; means for fixing a feeding tube outside of the body A61J15/0053
• CPC Class Codes: A61M 5/14276 specially adapted for implantation
• CPC Class Codes: A61M 5/16827 controlling delivery of multiple fluids, e.g. sequencing, mixing or via separate flow-paths infusion of multiple fluids without using a controller A61M5/1407

Abstract

Implantable infusion devices configured to improve fill and evacuation procedures.

Claims

1. An implantable infusion device, comprising:

an infusion device housing;

first and second reservoir compartments associated with the infusion device housing;

at least one fluid transfer device operably connected to the first and second reservoir compartments; and

a fill port including

a fill port housing with first and second outlet apertures and an end wall,

first and second longitudinally spaced septums within the fill port housing such that the second outlet aperture is located between the second septum and the end wall,

a first fluid receiving region within the fill port housing between the first and second septums and a second fluid receiving region within the fill port housing between the second septum and the end wall, the first and second fluid receiving regions being isolated from one another by the second septum such that fluid flow therebetween is prevented, the first fluid receiving region being operably connected to the first reservoir compartment by the first outlet aperture and a first flow path and the second fluid receiving region being operably connected to the second reservoir compartment by the second outlet aperture and a second flow path,

a first annular filter having an inner perimeter defining the first fluid receiving region and an outer perimeter facing the first outlet aperture and in contact with a first cylindrical surface within the fill port housing, and

a second annular filter having an inner perimeter defining the second fluid receiving region and an outer perimeter facing the second outlet aperture and in contact with a second cylindrical surface within the fill port housing;

the respective configurations of the first annular filter and the fill port housing being such that the fluid passes through the inner and outer perimeters of the first annular filter as the fluid flows from the first fluid receiving region to the first outlet aperture; and

the respective configurations of the second annular filter and the fill port housing are such that the fluid passes through the inner and outer perimeters of the second annular filter as the fluid flows from the second fluid receiving region to the second outlet aperture.

2. An implantable infusion device as claimed in claim 1, wherein the at least one fluid transfer device comprises a first fluid transfer device operably connected to the first reservoir compartment and a second fluid transfer device operably connected to the second reservoir compartment.

3. An implantable infusion device as claimed in claim 2, further comprising:

a first delivery lumen operably connected to the first fluid transfer device; and

a second delivery lumen operably connected to the second fluid transfer device.

4. An implantable infusion device as claimed in claim 3, wherein the first and second delivery lumens are located within different catheters.

5. An implantable infusion device as claimed in claim 1, further comprising:

a reservoir and a pressure transmissive partition located within the reservoir, the first and second reservoir compartments being located within the reservoir on opposite sides of the pressure transmissive partition.

6. An implantable infusion device as claimed in claim 1, wherein the fill port is carried by the infusion device housing.

7. An implantable infusion device system, comprising:

an implantable infusion device including

an infusion device housing,

first and second reservoir compartments associated with the infusion device housing,

at least one fluid transfer device operably connected to the first and second reservoir compartments, and

a fill port including

a fill port housing with first and second outlet apertures and an end wall,

first and second longitudinally spaced septums within the fill port housing such that the second outlet aperture is located between the second septum and the end wall,

a first fluid receiving region within the fill port housing between the first and second septums and a second fluid receiving region within the fill port housing between the second septum and the end wall, the first and second fluid receiving regions being isolated from one another by the second septum such that fluid flow therebetween is prevented, the first fluid receiving region being operably connected to the first reservoir compartment by the first outlet aperture and a first flow path and the second fluid receiving region being operably connected to the second reservoir compartment by the second outlet aperture and a second flow path,

a first annular filter having an inner perimeter defining the first fluid receiving region and an outer perimeter facing the first outlet aperture and in contact with a first cylindrical surface within the fill port housing, and

a second annular filter having an inner perimeter defining the second fluid receiving region and an outer perimeter facing the second outlet aperture and in contact with a second cylindrical surface within the fill port housing,

the respective configurations of the first annular filter and the fill port housing being such that the fluid passes through the inner and outer perimeters of the first annular filter as the fluid flows from the first fluid receiving region to the first outlet aperture, and

the respective configurations of the second annular filter and the fill port housing are such that the fluid passes through the inner and outer perimeters of the second annular filter as the fluid flows from the second fluid receiving region to the second outlet aperture;

a first needle, including a sharpened distal end portion and an outlet aperture, configured such that the outlet aperture of the first needle is located within the first fluid receiving region when the first needle is fully inserted into the fill port; and

a second needle, including a sharpened distal end portion and an outlet aperture, configured such that the outlet aperture of the second needle is located within the second fluid receiving region when the second needle is fully inserted into the fill port.

8. An implantable infusion device system as claimed in claim 7, wherein the at least one fluid transfer device comprises a first fluid transfer device operably connected to the first reservoir compartment and a second fluid transfer device operably connected to the second reservoir compartment.

9. An implantable infusion device system as claimed in claim 8, further comprising:

a first delivery lumen operably connected to the first fluid transfer device; and

a second delivery lumen operably connected to the second fluid transfer device.

10. An implantable infusion device system as claimed in claim 9, wherein the first and second delivery lumens are located within different catheters.

11. An implantable infusion device system as claimed in claim 7, further comprising:

a reservoir and a pressure transmissive partition located within the reservoir, the first and second reservoir compartments being located within the reservoir on opposite sides of the pressure transmissive partition.

12. An implantable infusion device system as claimed in claim 7, wherein the fill port is carried by the infusion device housing.