Contaminated sharp object disposal method

• US 4,845,923 A
• Filed: 08/06/1987
• Issued: 07/11/1989
• Est. Priority Date: 08/06/1987
• Status: Expired due to Fees

• Current Assignee: Dennis M. Donovan
• Original Assignee: Dennis M. Donovan
• Inventors: Donovan, Dennis M.
• Primary Examiner(s): Culver, Horace M.
• Application Number:
  US07/082,440
• Time in Patent Office: 705 Days
• Field of Search: 53/431, 53/440, 53/472, 53/474, 53/140, 206/328
• US Class Current: 53/431
• CPC Class Codes: A61B 50/362 for sharps
• CPC Class Codes: A61M 2005/3109 Caps sealing the needle bore by use of, e.g. air-hardening adhesive, elastomer or epoxy resin
• CPC Class Codes: A61M 2005/328 having needle tip encapsulating means, e.g. two-component hardenable compound or molten plastic
• CPC Class Codes: A61M 5/3205 Apparatus for removing or disposing of used needles or syringes, e.g. containers; Means for protection against accidental injuries from used needles for sharps A61B50/362; disintegrating apparatus in general B02C, e.g. B02C19/0075, B23H9/001; disposal of medical waste in general B09B3/00; receptacles for refuse disposal in general B65F1/00

Abstract

A system and a method for the isolation from the environment of chemically or biologically contaminated objects are disclosed. The method includes inserting a contaminated object into a disposal container and then contacting the object with one or more reactive agents which react to immobilize and protectively encapsulate the object. The use of reactive agents which are members of room temperature reacting polyurethane foam systems is particularly preferred.

Claims

1. A method for the isolation from the environment of a chemically or biologically contaminated object having at least one sharp point or edge, said method comprising the steps of:

(a) inserting said object into a disposal container,

(b) contacting said object with at least one reactive agent, and

(c) reacting said agent in response to said inserting step to immobilize and protectively encapsulate said object.

2. The method according to claim 1 wherein said object is selected from the group consisting of hypodermic needles, scalpels, suture needles, catheters and glassware.

3. The method according to claim 1 wherein said object is contacted with more than one reactive agent and wherein at least one of said reactive agents is isolated in said disposal container by a rupturable containment means and wherein said containment means is ruptured and the reactive agents are thereby mixed and react upon insertion of said object into said disposal container.

4. The method according to claim 1 wherein said at least one reactive agent is activated to react upon application of heat or electromagnetic energy.

5. The method according to claim 4 wherein one of said reactive agents is a blocked isocyanate.

6. The method according to claim 1 wherein at least one of said reactive agents is introduced into said disposal container by means of a pressurized device.

7. The method according to claim 6 wherein two or more of said reactive agents are mixed by means of a mixing valve.

8. The method according to claim 1 wherein said reactive agents are members of a polymer reaction system.

9. The method according to claim 8 wherein said reaction system is a polyurethane foam system.

10. The method according to claim 1 wherein said reaction system is capable of reacting at room temperature.

11. A method for the isolation from the environment of a chemically or biologically contaminated object, said method comprising the steps of:

(a) inserting said object into a disposal container,

(b) contacting said object with more than one reactive agents, and

(c) reacting said agents to immobilize and protectively encapsulate said object wherein at least one of said reactive agents is isolated in said disposal container by a rupturable containment means and wherein said containment means is ruptured and the reactive agents are thereby mixed and react upon insertion of said object into said disposal container.

12. The method according to claim 11 wherein said object has at least one sharp point or edge and is selected from the group consisting of hypodermic needles, scalpels, suture needles, catheters and glassware.

13. The method according to claim 11 wherein at least one of said reactive agents is activated to react upon application of heat or electromagnetic energy.

14. The method according to claim 13 wherein one of said reactive agents is a blocked isocyanate.

15. The method according to claim 11 wherein said reactive agents are members of a polymer reaction system.

16. The method according to claim 15 wherein said reaction system is a polyurethane foam system.

17. The method according to claim 11 wherein said reaction system is capable of reacting at room temperature.