Fluid Interface System for Implants

• US 20180280139A1
• Filed: 03/30/2018
• Published: 10/04/2018
• Est. Priority Date: 04/01/2017
• Status: Active Grant

• Current Assignee: Nanohive Medical LLC
• Original Assignee: HD LifeSciences LLC
• Inventors: Jones, Christopher L., Helmar, Ian, Diehl, Lucas, Tinley, Jason, Chappuis, Kevin D., Sullivan, John F.
• Granted Patent: US 10,624,746 B2
• Time in Patent Office: Days
• CPC Class Codes: A61F 2/28 Bones joints A61F2/30
• CPC Class Codes: A61F 2/30767 Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
• CPC Class Codes: A61F 2/44 for the spine, e.g. vertebrae, spinal discs
• CPC Class Codes: A61F 2/4455 for the fusion of spinal bodies, e.g. intervertebral fusion of adjacent spinal bodies, e.g. fusion cages intervertebral discs A61F2/442
• CPC Class Codes: A61F 2002/30006 differing in density or specific weight
• CPC Class Codes: A61F 2002/30011 differing in porosity
• CPC Class Codes: A61F 2002/30062 (bio)absorbable, biodegradable, bioerodable, (bio)resorbable, resorptive
• CPC Class Codes: A61F 2002/3014 decagonal
• CPC Class Codes: A61F 2002/30143 hexagonal
• CPC Class Codes: A61F 2002/30146 octagonal
• CPC Class Codes: A61F 2002/30148 lozenge- or diamond-shaped
• CPC Class Codes: A61F 2002/30154 square
• CPC Class Codes: A61F 2002/30187 D-shaped or half-disc-shaped
• CPC Class Codes: A61F 2002/30263 cubical
• CPC Class Codes: A61F 2002/30273 pyramidal
• CPC Class Codes: A61F 2002/3028 polyhedral different from parallelepipedal and pyramidal
• CPC Class Codes: A61F 2002/30322 differing in surface structures
• CPC Class Codes: A61F 2002/30548 for adjusting fluid pressure
• CPC Class Codes: A61F 2002/30586 having two or more inflatable pockets or chambers
• CPC Class Codes: A61F 2002/30593 hollow
• CPC Class Codes: A61F 2002/30677 : Means for introducing or releasing pharmaceutical products, e.g. antibiotics, into the body
• CPC Class Codes: A61F 2002/30784 : Plurality of holes
• CPC Class Codes: A61F 2002/30838 : Microstructures
• CPC Class Codes: A61F 2002/3092 : having an open-celled or open-pored structure
• CPC Class Codes: A61F 2002/3093 : for promoting ingrowth of bone tissue
• CPC Class Codes: A61F 2002/30985 : using three dimensional printing [3DP]
• CPC Class Codes: A61F 2002/4629 : connected to the endoprosthesis or implant via a threaded connection
• CPC Class Codes: A61L 27/045 : Cobalt or cobalt alloys
• CPC Class Codes: A61L 27/56 : Porous materials, e.g. foams or sponges
• CPC Class Codes: B33Y 80/00 : Products made by additive manufacturing

Abstract

The present invention includes a fluid interface system for use in medical implants. The fluid interface system of the present invention can include one or more fluid interface channels disposed within an implant. The fluid interface systems can optionally include fluid redirection channels, fluid interface ports and a corresponding instrument to transfer fluid in or out of the fluid interface ports.

Claims

1. An implant comprising:

a body comprising a metallic lattice and defining an external surface;

a first interface channel disposed within the implant;

wherein the first interface channel is configured to transport a fluid;

wherein the first interface channel comprises a volume with a first volumetric density;

wherein another volume within the implant comprises a second volumetric density;

wherein the first volumetric density is less than the second volumetric density; and

wherein the first interface channel is configured to allow fluid communication with another location on or in the implant.

2. The implant of claim 1, wherein the first interface channel is fluidly connected to a plurality of branches.

3. The implant of claim 1, the first interface channel and branches are configured to follow a contour of the body.

4. The implant of claim 1, further comprising a repeating unit cell structure comprising a plurality of struts connected at nodes, wherein the first interface channel comprises at least the volume of a void within a single unit cell.

5. The implant of claim 4, wherein the branches further comprise at least the volume of a void within a single unit cell with shared struts along an edge of the first interface channel, defining an opening.

6. The implant of claim 1, further comprising a first fluid interface port located on the external surface and in fluid communication with the first interface channel.

7. The implant of claim 1, wherein the first interface channel has a wall portion comprising a substantially solid surface and selectively located pores extending through the wall portion.

8. The implant of claim 1, wherein the first interface channel is positioned a first distance from a first area of the external surface that is greater than 1.0 times a second distance from a second area of the external surface.

9. The implant of claim 1, wherein the first interface channel is configured to provide a pressure differential with another portion of the body or its external surface.

20. The implant of claim 1, wherein the first interface channel further comprises a surface with a mean roughness between and including 0 nm to 50 nm.

10. An implant comprising:

a body comprising an annular ring defined by a front, rear, right side and left side and a height;

wherein the body further comprises a metallic lattice;

a first interface channel disposed within the annular ring, configured to transport a fluid;

a first interface port fixed to an external surface of the annular ring and connected to the first interface channel so as to allow fluid communication between them;

wherein the first interface channel comprises a volume with a first volumetric density;

wherein another volume within the implant comprises a second volumetric density;

wherein the first volumetric density is less than the second volumetric density; and

wherein the first interface channel is configured to allow fluid communication with another location on or in the implant.

11. The implant of claim 10, wherein the annular ring has an inner wall and an outer wall, wherein the first interface channel is positioned a first distance from the inner wall and a second distance from the outer wall;

and wherein the first distance is greater than the second distance.

12. The implant of claim 10, wherein the annular ring has an inner wall and an outer wall, wherein the first interface channel is positioned a first distance from the inner wall and a second distance from the outer wall;

and wherein the second distance is greater than the first distance.

13. The implant of claim 10, wherein the implant further comprises a repeating unit cell structure;

wherein the annular ring has an inner wall and an outer wall, wherein the first interface channel is positioned a first distance from the inner wall;

wherein the first distance is measured by a number of unit cells and wherein the first distance is one or more.

14. The implant of claim 10, wherein the implant further comprises a repeating unit cell structure;

wherein the annular ring has an inner wall and an outer wall, wherein the first interface channel is positioned a first distance from the outer wall;

wherein the first distance is measured by a number of unit cells and wherein the first distance is one or more.

15. The implant of claim 10, further comprising a transverse arm fixed between the front and rear of the annular ring.

16. The implant of claim 10, further comprising:

a second interface channel disposed within the transverse arm;

wherein the second interface channel comprises a volume with a third volumetric density;

wherein the third volumetric density is less than the second volumetric density;

wherein the second interface channel is configured to allow fluid communication with another location within the implant; and

wherein the second interface channel follows an external contour of the transverse arm.

17. The implant of claim 10, wherein the volumetric density of the first interface channel increases in a radial direction.

18. The implant of claim 10, wherein the first interface channel is further configured to promote cell migration.

19. The implant of claim 10, wherein the first interface channel is further configured to promote cell attachment.