Biological soil detector

• US 7,465,536 B2
• Filed: 05/10/2004
• Issued: 12/16/2008
• Est. Priority Date: 05/10/2004
• Status: Expired due to Fees

• Current Assignee: 3M Innovative Properties Company (3M Company)
• Original Assignee: 3M Innovative Properties Company (3M Company)
• Inventors: Nelson, Mark W., Landgrebe, Kevin D., Gonzalez, Bernard A., Chandrapati, Sailaja, Clear, Susannah C., Klepzig, Kimberley D., Endler, Elizabeth E.
• Primary Examiner(s): GITOMER, RALPH J
• Application Number:
  US10/842,097
• Publication Number:
  US 20050250168A1
• Time in Patent Office: 1,681 Days
• Field of Search: 435/287.4, 435/4, 435/18, 435/30, 435/31, 435/174, 435/28, 435/288.5, 210/206
• US Class Current: 435/4
• CPC Class Codes: G01N 33/521 Single-layer analytical elements

Abstract

A biological soil detector is provided, having: a solid support member; a specific indicator immobilized on the solid support member; and a retaining member which holds the solid support, the retaining member and solid support are configured so that the solid support will readily contact a surface being tested for the presence of biological soil. A method for the use of the detector is also provided, the method including the following steps: contacting the biological soil detector with a surface; withdrawing the biological soil detector from the surface; and inspecting the solid support member of the detector to determine whether the specific indicator immobilized has interacted with biological soil. In still another aspect, the invention provides biological soil detector and a method for using the detector in which the detector includes: a solid support member that has been treated with at least one amine or quaternary functional coating; and a specific indicator immobilized on the coating.

Claims

1. A biological soil detector, comprising:

A solid support member treated with at least one amine or quaternized ammonium functional coating immobilizing a specific indicator;

The specific indicator immobilized on the coating on the solid support member;

wherein the specific indicator is selected to detect a component of biological soil selected from the group consisting of protein, endotoxin, enzyme, nucleotide, and combinations of two or more of the foregoing;

wherein the specific indicator is in a predetermined or ordered pattern on the presence of biological soil; and

A retaining member holding the solid support thereon, the retaining member and solid support configured to facilitate contact between the solid support a surface, wherein the retaining member is dimensioned to fit within a channel to place the solid support member in contact with walls of the channel, and wherein the retaining member is of sufficient length to ensure that the solid support member can be exposed to the walls of the channel along the entire length of the channel, the retaining member comprising a first end and a second end and an elongate body portion extending between the first end and the second end;

wherein the solid support member is a flexible material so that the solid support member fits within the channel in a manner facilitating contact between the specific indicator and the walls of the channel.

2. The biological soil detector of claim 1 wherein the solid support comprises a first material selected from the group consisting of at least one polymer;

inorganic material; and

mixed organic and inorganic material.

3. The biological soil detector of claim 2 wherein the polymer is selected from polymers containing functional groups, the functional groups selected from the group consisting of carboxyl and salts thereof, aldehydes, sulfonic acid and salts thereof, phosphonic acid and salts thereof, alcohol, primary amine, secondary amine, tertiary amine, amide, imide, quaternized ammonium, sulfonium, phosphonium, pyridine, cyclic amido, oxyalkylene, imidazoles and combinations of two or more of the foregoing.

4. The biological soil detector of claim 3 wherein the polymers containing functional groups comprise polymers and copolymers selected from the group consisting of carboxyl containing polymers;

polyalkoxylates;

poly(meth)acrylates;

polyvinyl alcohol;

polyethylene-vinyl alcohol copolymer;

polyurethane;

polyurea;

polyester;

polyamide;

polyimide;

polyether;

cellulose;

rayon;

polyphosphate;

polypeptide;

polyacrylonitrile;

polyacrylamide;

polycarbonate;

polyethersulfone; and

combinations of two or more of the foregoing.

5. The biological soil detector of claim 2 wherein the inorganic material is selected from the group consisting of metal oxide, hydrate, metal-hydroxyl and combinations of two or more of the foregoing, and wherein the metal is Si.

6. The biological soil detector of claim 2 wherein the mixed organic and inorganic material is selected from the group consisting of polymeric composites, ceramers, and combinations thereof.

7. The biological soil detector of claim 1 wherein the solid support member comprises a first material selected from the group consisting of at least one polymer, inorganic material, and mixed organic and inorganic material;

and a second material attached to the first material.

8. The biological soil detector of claim 7 wherein the first material is selected from polypropylene, polyethylene, polyvinylidene fluoride, tetrafluoroethylene hexafluoropropylene vinylidene fluoride, polyurethane, polyurea, polyester, polyvinyl acetate, polyamide, polyimide, poly(meth)acrylate, polyethersulfone, glass, silica, cellulosics, rayon, polycarbonate, polyvinyl alcohol, polystyrene, and combinations of the foregoing.

9. The biological soil detector of claim 8 wherein the second material is hydrophilic and is selected from the group consisting of monomer, polymer, reactive metal alkoxide and combinations of two or more of the foregoing.

10. The biological soil detector of claim 9 wherein the second material comprises one or more functional groups selected from carboxyl and salts thereof, aldehyde, sulfonic acid and salts thereof, phosphonic acid and salts thereof, alcohol, primary amine, secondary amine, tertiary amine, amide, imide, quaternized ammonium, sulfonium, phosphonium, pyridine, cyclic amido, oxyalkylene, co-saccharinamidoundecylsiloxane, glycidyl, succinimido, imidazoles and combinations of two or more of the foregoing.

11. The biological soil detector of claim 2 wherein the solid support member comprises a conformable, flexible, high integrity material that conforms to and fits within the inner channels of a medical device while maintaining contact with the inner surfaces of the channel without structural failure when pushed or pulled through the length of the channel.

12. The biological soil detector of claim 11 wherein the solied support is apolymer membrane comprises a thermally induced phase separation membrane comprising a material selected from the group consisting of high density polyethylene, polypropylene, polyvinylidenefluoride, polyethylene-vinyl copolymer and combinations of two or more of the foregoing.

13. The biological soil detector of claim 2 wherein the solid support member further comprises a hydrophilic coating.

14. The biological soil detector of claim 1 wherein the specific indicator is selected from the group consisting of 5-bromo-4-chloro-3-indolyl β

-D- glucopyranoside;

5-bromo-4-chloro-3-indolyl β

-D-galactopyranoside;

5-bromo-4-chloro-3-indolyl phosphate;

5-bromo-6-chloro-3-indolyl-β

-D-glucopyranoside;

5-bromo-6-chloro-3-indolyl-β

-D-galactopyranoside;

5-bromo-6-chloro-3-indolyl phosphate;

4-methylumbelliferyl-β

-D-glucopyranoside;

4-methylumbelliferyl-β

-D-galactopyranoside;

4-methylumbelliferyl-phosphate, esculin, orthophthaldialdehyde (OPA), polydiacetylenes;

Bradford assay combination of compounds;

Lowry assay combination of compounds, Biuret assay combination of compounds;

bicinchoninic acid (BCA); and

combinations of two or more of the foregoing

15. The biological soil detector of claim 1 wherein the specific indicator comprises nitro blue tetrazolium chloride in combination with on or more indolyl functional indicators selected from the group consisting of 5-bromo-4-chloro-3-indolyl β

-D -glucopyranoside;

5-bromo-4-chloro-3-indolyl β

-D-galactopyranoside;

5-bromo-4-chloro-3-indolyl phosphate;

5-bromo-6-chloro-3-indolyl-β

-D-glucopyranoside;

5-bromo-6-chloro-3-indolyl-β

-D-galactopyranoside;

5-bromo-6-chloro-3-indolyl phosphate.

16. The biological soil indicator of claim 15, wherein the specific indicator further comprises monovalent or divalent metal ions selected from the group consisting of sodium, potassium, zinc, manganese, magnesium, calcium and combinations of one or more of the foregoing.

17. The biological soil indicator of claim 1 wherein the nucleotide is adenosine triphosphate.

18. The biological soil indicator of claim 1 wherein the enzyme is selected from the group consisting of galactosidases, phosphatases, glucosidases, and lactosidases and combinations thereof.

19. The biological soil indicator of claim 1 wherein specific indicator is selected to detect sulfatases or fatty acid esterases.

20. The biological soil detector of claim 1 wherein the solid support member is releasably affixed to the retaining member.

21. The biological soil detector of claim 1, wherein a color of the specific indicator is a stable color.

22. The biolobical soil detector of claim 1, wherein the channel is an inner channel of a medical device.

23. The biological soil detector of claim 1, wherein the medical device is an endoscope.