US4845923A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Contaminated sharp object disposal method
Assignee: Individual
•
Filing: 1987-08-06
•
Granted: 1989-07-11
•
Expires: 2007-08-06
Abstract
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.
Inventors
- 👤 Dennis M. Donovan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:10
CPC Classifications
A; A61; A61M; A61M5/00; A61M5/178; A61M5/31; A61M5/32; A61M5/3205; A61B; A61B50/00; A61B50/30; A61B50/36; A61B50/362; A61M2005/3103; A61M2005/3107; A61M2005/3109; A61M5/3278; A61M2005/328
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
65 words
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.
Claim 2
Independent Claim
65 words
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.
Claim 3
Dependent Claim
24 words
The method according to claim 1 wherein said object is selected from the group consisting of hypodermic needles, scalpels, suture needles, catheters and glassware.
Claim 4
Dependent Claim
62 words
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.
Claim 5
Dependent Claim
24 words
The method according to claim 1 wherein said at least one reactive agent is activated to react upon application of heat or electromagnetic energy.
Claim 6
Dependent Claim
16 words
The method according to claim 4 wherein one of said reactive agents is a blocked isocyanate.
Claim 7
Dependent Claim
26 words
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.
Claim 8
Dependent Claim
22 words
The method according to claim 6 wherein two or more of said reactive agents are mixed by means of a mixing valve.
Claim 9
Dependent Claim
17 words
The method according to claim 1 wherein said reactive agents are members of a polymer reaction system.
Claim 10
Dependent Claim
15 words
The method according to claim 8 wherein said reaction system is a polyurethane foam system.
Claim 11
Dependent Claim
17 words
The method according to claim 1 wherein said reaction system is capable of reacting at room temperature.
Claim 12
Independent Claim
95 words
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.
Claim 13
Independent Claim
95 words
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.
Claim 14
Dependent Claim
33 words
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.
Claim 15
Dependent Claim
25 words
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.
Claim 16
Dependent Claim
16 words
The method according to claim 13 wherein one of said reactive agents is a blocked isocyanate.
Claim 17
Dependent Claim
17 words
The method according to claim 11 wherein said reactive agents are members of a polymer reaction system.
Claim 18
Dependent Claim
15 words
The method according to claim 15 wherein said reaction system is a polyurethane foam system.
Claim 19
Dependent Claim
17 words
The method according to claim 11 wherein said reaction system is capable of reacting at room temperature.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-07-10 | 1993-01-09 | 1993-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-07-10 | 1997-01-09 | 1997-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-07-10 | 2001-01-09 | 2001-07-11 | $7700.00 | Window Closed / Lapsed |