Wenzel-cassie glove

Patent metadata

Field	Value
Publication number	US-10433924-B2
Application number	US-201715616919-A
Country	US
Kind code	B2
Filing date	Jun 8, 2017
Priority date	Oct 5, 2015
Publication date	Oct 8, 2019
Grant date	Oct 8, 2019

Abstract

A glove with an enhanced gripping textured surface is disclosed herein. In preferred embodiments, the glove contains a palm region adapted to cover the palm of a person's hand, a thumb region extending outwardly from the palm region, an index finger region disposed adjacent the thumb region, a middle finger region adjacent the index finger region, a ring finger region adjacent the middle finger region, and a little finger region adjacent the ring finger region with each region containing a textured surface. In preferred embodiments, the textured surface is formed by a plurality of dimensionally hierarchical structures superimposed in layers. The textured surface of the invention, when in contact with wet tissue, repels water at a first texture layer and traps tissue at a second texture layer, such that when in tissue contact, especially exudative tissue, tissue fixatively localizes to the glove surface.

First claim

We claim:

1. A medical glove comprising first and second sides, four finger enclosures including four fingertip portions, a thumb enclosure including a thumb tip portion, a palm area on the first side, a backhand area on the second side, and a wrist portion, wherein at a least a portion of the glove comprises a hierarchically surface texture comprising first and second microstructures, wherein the second microstructures are smaller than the first microstructures, and a plurality of the second microstructures is disposed on each of the first microstructures.

2. The medical glove of claim 1 , wherein the hierarchical surface texture further comprises a third microstructure, wherein the third microstructure is smaller than the second microstructure, and a plurality of the third microstructures are disposed on each of the second microstructures.

3. The medical glove of claim 1 , wherein the hierarchical surface texture is disposed on at least one fingertip portion, the thumb portion, the palm surface, or a combination thereof.

4. The medical glove of claim 1 , wherein the hierarchical surface texture is provided on both the first and second sides of the glove.

5. The medical glove of claim 1 , wherein the first microstructure has a size ranging from 25 microns to 1000 microns, the second microstructure has a size ranging from 5 microns to up to 100 microns, and the third microstructure has a size ranging from 0.5 to up to 10 microns.

6. The medical glove of claim 1 , wherein the first microstructure has a height ranging from 100 microns to 1000 microns, the second microstructure has a height ranging from 10 microns to up to 100 microns and the third microstructure has a height ranging from 1 microns to up to 10 microns.

7. The medical glove of claim 1 , wherein the first microstructure has a pitch ranging from 100 to 1000 microns, the second microstructure has pitch ranging from 10 micron up to 100 micron, and the third microstructure has a pitch ranging from 1 micron up to 10 microns.

8. The medical glove of claim 1 , further comprising a fourth microstructure.

9. The medical glove of claim 8 , wherein a plurality of fourth microstructures are disposed on each of the second microstructures.

10. The medical glove of claim 1 , wherein the microstructures are pillars, sinusoids, flutes, ribs or a combination thereof.

11. The medical glove of claim 10 , wherein the second microstructures are cylindrical pillars and the fourth microstructures are flutes or ribs.

12. The medical glove of claim 1 , wherein hierarchical surface texture is imprinted in the glove.

13. The medical glove of claim 1 , wherein the hierarchical surface texture is adhesively disposed on the glove.

14. The medical glove of claim 1 , wherein the surface area of the hierarchical surface texture is at least twice the area of a smooth plane of the same dimensions.

15. The medical glove of claim 1 , wherein the hierarchical surface texture forms a reversible adhesion with a mammalian tissue when shear stress exceeds normal pressure, and the textured surface has a static hydrophilic contact angle higher than about 120° and a hydrophobic contact angle lower than about 120°.

16. The medical glove of claim 1 , wherein the hierarchical surface texture forms a reversible adhesion with a mammalian tissue when shear stress exceeds normal pressure, and the surface texture has a contact hysteresis angle greater than 5 degrees.

17. The medical glove of claim 1 , wherein the hierarchical surface pattern forms an interface with mammalian bodily fluids, wherein the interface is 1) superhydrophobic, 2) Wenzel-Cassie, or 3) Cassie-Baxter.

Assignees

• Bvw Holding Ag

Inventors

• Bluecher Lukas
• Milbocker Michael

Classifications

• A61B42/00

  Surgical gloves; Finger-stalls specially adapted for surgery; Devices for handling or treatment thereof · CPC title

• A41D19/01558

  using a layer of grip improving material (A41D19/01552 takes precedence) · CPC title

• A61B42/10 Primary

  Surgical gloves · CPC title

• A41D19/0003

  with ambidextrous shape · CPC title

• A41D19/0062

  made of one layer of material · CPC title