Point-of-use infectious waste disposal system

• US 5,674,175 A
• Filed: 01/31/1996
• Issued: 10/07/1997
• Est. Priority Date: 01/31/1996
• Status: Expired due to Fees

• Current Assignee: John R Bailey
• Original Assignee: John R Bailey
• Inventors: Bailey, John R.
• Primary Examiner(s): Suchfield, George A.
• Application Number:
  US08/594,810
• Time in Patent Office: 615 Days
• Field of Search: 405/128, 588/249, 588/252, 588/255, 588/258, 588/259, 588/901, 206/364, 206/365, 206/366
• US Class Current: 588/255
• CPC Class Codes: A61L 11/00 Methods specially adapted for refuse disintegrating medical waste B02C19/0075; disposal of medical waste B09B3/00
• 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

Abstract

A method for containing potentially infectious devices. The potentially infectious devices are deposited is a container to which is added an MDI-based urethane prepolymer-containing composition to at least partially envelope the potentially infectious devices. The prepolymer containing composition is caused to harden through polymerization to immobilize the devices, and to act as a sterilizing or disinfectant agent due in large part to the exothermic nature of the reaction.

Claims

1. In a method for containing potentially infectious devices comprising depositing the potentially infectious devices in a container, the improvement comprising adding to said container a sufficient quantity of a hardenable compassion to at least partially envelop said potentially infectious devices, said hardenable composition comprising an MDI-based urethane containing prepolymer-containing liquid capable of polymerizing in an exothermic reaction to immobilize said potentially infectious devices, said prepolymer containing a ricinoleic acid component.

2. The method of claim 1 wherein the MDI-based urethane prepolymer contains polyether linkages.

3. The method of claim 2 wherein the polyether linkages are provided by polypropylene glycol.

4. The method of claim 1 wherein the MDI-based urethane propolymer contains polyether linkages provided by polypropylene glycol.

5. The method of claim 4 wherein the ricinoleic acid component is present in an amount of about 65 percent weight percent.

6. The method of claim 4 wherein the MDI-based urethane prepolymer containing polypropylene glycol-provided polyether linkages is present in an amount of about 35 weight percent.