Infectious waste containment system

• US 6,010,444 A
• Filed: 09/05/1997
• Issued: 01/04/2000
• Est. Priority Date: 09/05/1997
• Status: Expired due to Term

• Current Assignee: WCM Waste & Compliance Management, Inc.
• Original Assignee: Isolyser Co., Inc. (Ecolab, Inc.)
• Inventors: Woody, Robert S., Dai, Dong, Honeycutt, Travis W., Lee, Baosheng
• Primary Examiner(s): SUCHFIELD, GEORGE A
• Application Number:
  US08/926,252
• Time in Patent Office: 851 Days
• Field of Search: 588/249, 588/255, 588/258, 588/259, 588/901, 206/364, 206/365, 206/366, 422/900, 428/34.1, 428/35.7
• US Class Current: 588/255
• CPC Class Codes: A61B 50/362 for sharps
• CPC Class Codes: B09B 3/0075 Disposal of medical waste casings for used articles, e.g. sharps A61B50/362; sterilisation of refuse A61L11/00; disposal of used needles or syringes A61M5/3205; disintegrating medical waste B02C19/0075
• CPC Class Codes: B09B 3/21 using organic binders or matrix
• CPC Class Codes: Y10S 422/90 Decreasing pollution or environmental impact
• CPC Class Codes: Y10T 428/1352 Polymer or resin containing [i.e., natural or synthetic]

Abstract

A method for containing potentially infectious devices. The potentially infectious devices are deposited in a container which contains a monomer, a reducing agent and water. An oxidizing agent is later added to cause polymerization of the monomer to immobilize the devices, and to act as a disinfecting agent due in large part to the exothermic nature of the reaction. In an alternate embodiment, the composition contains a monomer, a thickener and water. Before use, this solution is admixed with an oxidizing and reducing agent and the thickened solution is poured into a container having disposed therein potentially infectious devices. Related methods, kits, devices, and compositions are also disclosed.

Claims

1. A method for containing potentially infectious items, the method comprising:

a) providing a container having therein a composition comprising;

i) a water-soluble monomer that polymerizes upon addition of a polymerization initiating agent; and

ii) water;

b) depositing one or more potentially infectious items into the container; and

c) at a predetermined time, causing polymerization of the composition by admixing with the composition in the container the polymerization initiating agent.

2. The method of claim 1, wherein the monomer is an acrylic or acrylamide monomer having admixed therein a reducing agent and wherein the polymerization initiating agent is an oxidizing agent.

3. The method of claim 1, wherein the composition further comprises an antifoaming agent.

4. The method of claim 1, wherein the composition further comprises a stabilizer.

5. The method of claim 1, wherein the composition further comprises a disinfectant.

6. The method of claim 1, wherein the reaction is sufficiently exothermic to achieve a peak temperature of at least 70°

C. for a sufficient amount of time to permit disinfection.

7. The method of claim 2, wherein the acrylic or acrylamide monomer comprises N-methylolacrylamide.

8. The method of claim 2, wherein the reducing agent comprises tetramethylethylenediamine.

9. The method of claim 3, wherein the stabilizer is a chelating agent.

10. A method for containing potentially infectious items, the method comprising:

a) providing a container having therein one or more potentially infectious items;

b) depositing into the container a composition comprising;

i) N-methylolacrylamide;

ii) a thickener admixed with the N-methylolacrylamide;

iii) water; and

iv) a reducing agent; and

c) at a predetermined time, causing polymerization of the composition by admixing with the composition in the container an oxidizing agent.

11. The method of claim 10, further comprising an antifoaming agent.

12. The method of claim 10, further comprising a stabilizer.

13. The method of claim 10, wherein the stabilizer is a chelating agent.

14. The method of claim 10, further comprising a disinfectant.

15. A kit for containing potentially infectious items, the kit comprising an oxidizing agent and a container having disposed therein a composition comprising:

a) an acrylic or acrylamide monomer;

b) a reducing agent admixed with the acrylic or acrylamide monomer; and

c) water.

16. A kit for containing potentially infectious items, the kit comprising a reducing agent and a container having disposed therein a composition comprising:

a) an acrylic or acrylamide monomer;

b) an oxidizing agent admixed with the acrylic or acrylamide monomer; and

c) water.

17. A kit for containing potentially infectious items, the kit comprising an oxidizing agent, a reducing agent, and a container having disposed therein a composition comprising:

a) an acrylic or acrylamide monomer;

b) a thickener; and

c) water.

18. The kit of claim 17, wherein the composition further comprises a reducing agent.

19. A device for containing potentially infectious items, the device comprising a container resistant to puncture by sharps and having disposed therein a composition comprising:

a) N-methylolacrylamide;

b) a reducing agent admixed with the N-methylolacrylamide; and

c) water.

20. A device for containing potentially infectious items, the device comprising a container resistant to puncture by sharps and having disposed therein a composition comprising:

a) N-methylolacrylamide;

b) an oxidizing agent admixed with the N-methylolacrylamide; and

c) water.