Patent US4938224A successfully refreshed from Google Patents.
US4938224A
Expired / Lapsed
US
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Process for detecting accidental contact with body fluids
Assignee: Individual
•
Filing: 1988-11-16
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Granted: 1990-07-03
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Expires: 2008-11-16
Abstract
Abstract A process for detecting accidental contact body fluid samples includes the addition of a small amount of a fluorescent chemical to the body fluid sample, the fluorescent chemical serving as a marker detectable upon exposure to ultraviolet light, Accordingly, any spills of the body fluid sample on exposed surfaces can be readily visually detected upon illuminating those surfaces with an ultraviolet light. Likewise, a process for detecting accidental exposure to a body fluid by skin surface protected by gloves or another substantially fluid impervious covering comprises submerging the gloved or otherwise covered skin surface into a fluorescent fluid, removing the glove or other covering and then illuminating the skin surface with an ultraviolet light to visually detect any fluorescent spots caused by holes or other leaks through the glove or other covering.
Inventors
- 👤 Joseph A. Rysavy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:50
CPC Classifications
G; G01; G01M; G01M3/00; G01M3/02; G01M3/04; G01M3/20; G01M3/38
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
110 words
A process for detecting accidental exposure of a protected skin surface to a body fluid, comprising, protecting a skin surface by covering it with a substantially fluid impervious covering thereby providing a covered skin surface, causing said covered skin surface to contact a body fluid, providing a solution of a fluorescent fluid, submerging said covered skin surface into said fluorescent fluid, removing said covered skin surface from said fluorescent fluid, removing said fluid impervious covering from said skin surface, illuminating said skin surface with a light operative to cause said florescent fluid to be visually fluorescent, and, visually detecting on said skin surface any fluorescent spots illuminated by said light.
Claim 2
Dependent Claim
110 words
A process for detecting accidental exposure of a protected skin surface to a body fluid, comprising, protecting a skin surface by covering it with a substantially fluid impervious covering thereby providing a covered skin surface, causing said covered skin surface to contact a body fluid, providing a solution of a fluorescent fluid, submerging said covered skin surface into said fluorescent fluid, removing said covered skin surface from said fluorescent fluid, removing said fluid impervious covering from said skin surface, illuminating said skin surface with a light operative to cause said florescent fluid to be visually fluorescent, and, visually detecting on said skin surface any fluorescent spots illuminated by said light.
Claim 3
Dependent Claim
20 words
The process of claim 1 wherein the step of protecting a skin surface comprises placing a glove over a hand.
Claim 4
Dependent Claim
28 words
The process of claim 1 wherein the step of causing said covered skin surface to contact a body fluid comprises providing medical or dental treatment for a patient.
Claim 5
Dependent Claim
25 words
The process of claim 1 wherein the step of causing said covered skin surface to contact a body fluid comprises drawing blood for subsequent analysis.
Claim 6
Dependent Claim
77 words
A process for detecting accidental contact with a body fluid sample, comprising, containing a body fluid sample in a receptacle, providing a fluorescent chemical in said receptacle, handling said receptacle such as for collection or testing of said body fluid sample, illuminating, with a light operative to cause said fluorescent chemical to be visually florescent, surfaces which were exposed to accidental contact by said body fluid sample, and, visually detecting any fluorescent spot illuminated by said light.
Claim 7
Dependent Claim
77 words
A process for detecting accidental contact with a body fluid sample, comprising, containing a body fluid sample in a receptacle, providing a fluorescent chemical in said receptacle, handling said receptacle such as for collection or testing of said body fluid sample, illuminating, with a light operative to cause said fluorescent chemical to be visually florescent, surfaces which were exposed to accidental contact by said body fluid sample, and, visually detecting any fluorescent spot illuminated by said light.
Claim 8
Dependent Claim
25 words
The process of claim 5 wherein said receptacle is selected from the group consisting of a test tube, blood bag, pyringe and blood collection needle.
Claim 9
Dependent Claim
27 words
The process of claim 5 wherein said florescent chemical was selected from the gorup consisting of fluorescent, a fluorescent derivative, bromcresol, bromphenol, bromthymol, chlorophenol, phenolphthalein, and thymolphthalein.
Claim 10
Dependent Claim
24 words
The process of claim 5 wherein said providing step comprises placement of said florescent chemical into said receptacle prior to said body fluid sample.
Claim 11
Dependent Claim
23 words
The process of claim 5 wherein said providing step comprises placement of said fluorescent chemical into said receptacle after said body fluid sample.
Claim 12
Dependent Claim
18 words
The process of claim 8 wherein said fluorescent chemical is placed in said receptacle in a wet state.
Claim 13
Dependent Claim
18 words
The process of claim 8 wherein said fluroescent chemical is placed in said receptacle in a dry state.
Claim 14
Dependent Claim
30 words
The process of claim 5 wherein said surfaces which were exposed to accidental contact are selected from the group consisting of body parts, clothing, furniture, equipment and a laboratory station.
Claim 15
Dependent Claim
17 words
The process of claim 5 wherein said illuminating step comprises exposing said surfaces to an ultraviolet light.
Claim 16
Dependent Claim
73 words
In combination, a receptacle adapted for the collection of whole blood or a liquid blood component, an anticoagulant in said receptacle and adapted to be mixed in solution with blood introduced into said receptacle, and a fluorescent chemical in said receptacle and adapted to be mixed in solution with blood introduced into said receptacle whereby spills of the blood, anticoagulant and fluorescent chemical soluiton are visually detectable upon illumination with an ultraviolet light.
Claim 17
Dependent Claim
73 words
In combination, a receptacle adapted for the collection of whole blood or a liquid blood component, an anticoagulant in said receptacle and adapted to be mixed in solution with blood introduced into said receptacle, and a fluorescent chemical in said receptacle and adapted to be mixed in solution with blood introduced into said receptacle whereby spills of the blood, anticoagulant and fluorescent chemical soluiton are visually detectable upon illumination with an ultraviolet light.
Claim 18
Dependent Claim
25 words
The combination of claim 14 wherein said receptacle is selected from the group consitsting of a test tube, blood bag, syringe and blood collection needle.
Claim 19
Dependent Claim
26 words
The combination of claim 14 wherein fluorescent chemical was selected from the group consisting of fluorescein, a fluorescein derivative, bromcreseol, bromphenol, bromthymol, chlorophenol, phenolphthalein, and thymolphthalein.
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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) | 1993-07-02 | 1994-01-01 | 1994-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-07-02 | 1998-01-01 | 1998-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-07-02 | 2002-01-01 | 2002-07-03 | $7700.00 | Window Closed / Lapsed |