Patterns for flow control and bioadhesion control

Patent metadata

Field	Value
Publication number	US-11077270-B2
Application number	US-201515502359-A
Country	US
Kind code	B2
Filing date	Aug 7, 2015
Priority date	Aug 7, 2014
Publication date	Aug 3, 2021
Grant date	Aug 3, 2021

Abstract

An article includes a path that extends across at least a portion of a surface of the article, the path being defined by at least one channel that traverses at least a portion of the surface or a first plurality of spaced features disposed on or in at least a portion of the surface. The first plurality of spaced features are arranged in a plurality of groupings. The groupings of features comprise repeat units, where the spaced features within a grouping are spaced apart at an average distance of about 1 nanometer to about 500 micrometers to define a path that traverses the plurality of spaced features.

First claim

What is claimed is:

1. An article comprising:
a first plurality of spaced features disposed on or in at least a portion of a surface of the article; the first plurality of spaced features arranged in a plurality of grouping; each grouping being a repeat unit of a plurality of repeat units that is repeated across the surface; the first plurality of spaced features within the grouping being spaced apart at an average distance of about 1 nanometer to about 500 micrometers to define a continuous path that traverses the first plurality of spaced features; where the continuous path extends across the portion of the surface of the article; each spaced feature having a surface that is substantially parallel to a surface on a neighboring spaced feature; each spaced feature being separated from the neighboring spaced feature; where the article comprises grids; wherein each grid encompasses the plurality of repeat units; and wherein the plurality of repeat units in adjacent grids are inclined at an angle of 50 to 150 degrees to each other.

2. The article of claim 1 , where the continuous path is a linear path and is oriented parallel to a direction of fluid flow.

3. The article of claim 1 , where the continuous path is a linear path and is oriented perpendicular to a direction of fluid flow.

4. The article of claim 1 , where the continuous path is a linear path and is oriented at an angle of about 1 to about 50 degrees from a direction of fluid flow.

5. The article of claim 1 , where the continuous path is a curvilinear path and is oriented at an angle of 0 to about 45 degrees from a direction of fluid flow.

6. The article of claim 1 , where the continuous path is a curvilinear path and is oriented at an angle of about 60 degrees to about 90 degrees from a direction of fluid flow.

7. The article of claim 1 , where the continuous path is defined by a plurality of linear channels.

8. The article of claim 1 , where the first plurality of spaced features have thicknesses that vary with distance from a given point.

9. The article of claim 1 , where the first plurality of spaced features have densities that vary with distance from a given point.

10. The article of claim 1 , where the article is an endotracheal tube or a catheter, where the continuous path is a linear path and is oriented parallel to a direction of fluid flow and parallel to a longitudinal axis of the endotracheal tube or the catheter.

11. The article of claim 1 , where the article comprises a plurality of sectors where the path is a linear path but is oriented differently in different sectors.

12. The article of claim 8 , where the article is a wound dressing.

13. The article of claim 1 , where the spaced features of the article are arranged in a zig zag fashion.

Assignees

• Sharklet Tech Inc
• Univ Florida

Inventors

• Magin Chelsea Marie
• Reddy Shravanthi T
• Brennan Anthony B
• May Rhea Marie
• Mann Ethan Eugene
• Mettetal Michael Ryan

Classifications

• A61F2/0077 Primary

  Special surfaces of prostheses, e.g. for improving ingrowth (A61F2/30767 takes precedence) · CPC title

• A61F2/1601

  Lens body having features to facilitate aqueous fluid flow across the intraocular lens, e.g. for pressure equalization or nutrient delivery · CPC title

• A61F2250/0056

  differing in wettability, e.g. in hydrophilic or hydrophobic behaviours · CPC title

• A61F2250/0068

  the pharmaceutical product being in a reservoir · CPC title

• A61F2002/009

  for hindering or preventing attachment of biological tissue · CPC title