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1. WO1992018959 - DISPOSITIF ET PROCEDE DE CONTROLE D'UN VETEMENT PROTECTEUR

Note: Texte fondé sur des processus automatiques de reconnaissance optique de caractères. Seule la version PDF a une valeur juridique

[ EN ]
contacts and the worker or the patient will complete the circuit. For example, the sensitivity of the circuit can be adjusted so that any breach in the surgeon's gloves which is large enough to permit sufficient quantities of fluid to pass through the gloves as will endanger the surgeon will be large enough to activate the alarm. The inventor has determined that a breach as small as a small pin hole or even as small as one molecule of the workpiece is large enough to permit fluid to penetrate the gloves in quantities sufficient to endanger the surgeon. Therefore, the sensitivity of the circuit can be set so that any fluid from the patient that can flow through a molecule-size hole in the surgeon's gloves and contact the surgeon's skin will be sufficient to activate the alarm elements. However, other opening sizes can be used if desired, even smaller if suitable. The sensitivity can also be adjusted so that a gap between any part of the contact and the worker or the workpiece will cause the alarm elements to be activated.
An additional lead L is also shown connected to the patient whereby additional healthcare workers can be connected to the patient as above described. If there more than one patient, each healthcare worker can be connected to those additional patients, using leads, such as lead L' also as above described.
It is understood that while certain forms of the present invention have been illustrated and described herein, it is not to be limited to the specific forms or arrangements of parts described and shown.

CLAIMS
1. A system for continuously monitoring a protective garment for detecting and signalling the occurrence of a breach in such protective garment comprising:
A) a unit including
(1) a housing,
(2) a power source,
(3) an alarm device, and
(4) a circuit for connecting said alarm device to said power source and which includes a current amplifier connected to said power source, said current amplifier having means for generating current when power is applied thereto in a particular manner; and
B) normally open switch means for connecting said circuit to said alarm device when closed, said switch means being closed when the person's skin contacts some portion of a workpiece on which that person is working, said switch means including
(1) a first contact element electrically connected with one side of said power source,
(2) a second contact electrically connected to one side of said alarm element,
(3) a current activated element associated with said switch means first contact to cause that switch means first contact to electrically contact said switch means second contact when power is applied to said current activated element in said particular manner to apply power from said power source to said alarm device,
(4) a first electrical wire connecting another side of said alarm device to another side of said power source,
(5) a first electrical contact element connected to said power source another side and mountable in electrical contact with the person,
(6) a second electrical contact element connected to said current amplifier and to said power source one side and being mountable on the workpiece,
(7) said protective garment being electrically insulating and being electrically interposed between the person and said electrically conductive workpiece and preventing formation of an electrically conductive path between said workpiece and said first electrical contact element when said protective garment is imperforate and permitting formation of an electri- cally conductive path between said workpiece and said first electrical contact element via any perforation in said protective garment, the formation of said electrically conductive path causing power from said power source to be applied to said current amplifier in said particular manner and activat- ing said current amplifier, current associated with said activated current amplifier causing power from said power source to be applied to said alarm device to activate said alarm device.
2. The system for continuously monitoring a protective garment defined in Claim 1 wherein said first electrical wire is fully electrically insulated between said first contact element and said circuit.
3. The system for continuously monitoring a protective garment defined in Claim 2 wherein said second electrical wire is fully electrically insulated between said second contact element and said circuit.
4. The system for continuously monitoring a protective garment defined in Claim 1 wherein said current amplifier element includes a transistor.
5. The system for continuously monitoring a protective garment defined in Claim 4 further including a sensitivity adjusting element connected to said power source.
6. The system for continuously monitoring a protective garment defined in Claim 5 wherein said sensitivity adjusting element is set so that any perforation in said protective garment will nearly instantly cause said electrically conductive path to be formed so that the integrity of said protective garment is monitored at all times during a work procedure.
7. The system for continuously monitoring a protective garment defined in Claim 5 wherein said transistor is an NPN type transistor.
8. A system for continuously monitoring a protective garment for detecting and signalling the occurrence of a breach in such protective garment comprising:
A) a unit including
(1) a housing,
(2) a power source,
(3) an alarm device, and
(4) a circuit for connecting said alarm device to said power source and which includes a current amplifier connected to said power source, said current amplifier having means for generating current when power is applied thereto in a particular manner;
B) normally open switch means for connecting said circuit to said alarm device when closed, said switch means being closed when the person's skin contacts some portion of a workpiece on which that person is working, said switch means including
(1) a first contact element electrically connected with one side of said power source,
(2) a second contact electrically connected to one side of said alarm element,
(3) a current activated element associated with said switch means first contact to cause that switch means first contact to electrical contact said switch means second contact when current is applied to said current activated element to apply power from said power source to said alarm device,
(4) a first electrical wire connecting another side of said alarm device to another side of said power source,
(5) a first electrical contact element connected to said power source another side and mountable in electrical contact with the person,
(6) a second electrical contact element connected to said current amplifier and to said power source one side and being mountable on the workpiece,
(7) said protective garment being electrically insulating and being electrically interposed between the person and said electrically conductive workpiece and preventing formation of an electrically conductive path between said workpiece and said first electrical contact element when said protective garment is imperforate and permitting formation of an electrically conductive path between said workpiece and said first electrical contact element via any perforation in said protective garment, the formation of said electrically conductive path causing power from said power source to be applied to said current amplifier in said particular manner and activating said current amplifier, current associated with said current amplifier being applied to said normally open switch element and causing said normally open switch element to close, said normally open switch element connecting said power source to said alarm means when closed and causing power from said power source to be applied to said alarm device to activate said alarm device; and
C) second current amplifying means for sensing if either said first electrical contact element or said second electrical contact element is not making proper electrical contact with said person or said workpiece respectively.
9. The system for continuously monitoring a protective garment defined in Claim 8 wherein said second current amplifying means includes a first transistor element connected to said first electrical contact element.
10. The system for continuously monitoring a protective garment defined in Claim 9 wherein said second current amplifying means further includes a second transistor element connected to said second electrical contact element.
11. The system for continuously monitoring a protective garment defined in Claim 10 wherein said first transistor element includes an NPN transistor.
12. The system for continuously monitoring a protective gar-ment defined in Claim 11 wherein said second transistor element includes a PNP transistor.
13. The system for continuously monitoring a protective garment defined in Claim 12 further including an LED element connected to said first transistor.
14. The system for continuously monitoring a protective garment defined in Claim 13 further including a second LED element connected to said second transistor.

15. The system for continuously monitoring a protective garment defined in Claim 8 further including a first additional alarm means connected to said second current amplifying means.

16. The system for continuously monitoring a protective gar- ment defined in Claim 14 further including a second additional alarm means connected to said current amplifying means.
17. The system for continuously monitoring a protective garment defined in Claim 8 wherein said second current amplifying means has a gain of at least about 25,000.
18. The system for continuously monitoring a protective garment defined in Claim 1 wherein said current amplifying means has a gain of at least approximately 25,000.
19. The system defined in Claim 8 wherein said alarm device includes a relay-type device.
20. The system defined in Claim 1 wherein said alarm device includes a relay-type device.
21. The system for continuously monitoring a protective garment defined in Claim 8 further including a first bus connected to said power source one side and a second bus connected to said power source another side.
22. The system for continuously monitoring a protective garment defined in Claim 21 further including a third bus connected to said current amplifier.
23. The system for continuously monitoring a protective gar-ment defined in Claim 22 further including further second current amplifying means connected to buses.
24. The system for continuously monitoring a protective garment defined in Claim 23 further including a further current amplifier connected to said buses.
25. The system for continuously monitoring a protective garment defined in Claim 24 further including additional alarm means connected to said further second current amplifying means.
26. The system for continuously monitoring a protective gar-ment defined in Claim 25 further including further additional alarm means connected to said further second current amplifying means.

27. A system for continuously monitoring a protective garment for detecting and signalling the occurrence of a breach in such protective garment comprising:
A) a unit including
(1) a housing,
(2) a power source,
(3) an alarm device having one side thereof connected to one side of said power source, and
(4) means for connecting said alarm device to said power source and which includes a current amplifier that acts as an open circuit when power is applied thereto in a first biasing direction and acts as a current generator when power is applied thereto in a second biasing direction, said current amplifier having one side thereof connected to another side of said alarm
device, another side of said current amplifier being connected to another side of said power source;
B) a first contact element connectable to a worker and being connected to said power source one side;
C) a second contact element connectable to a workpiece and being connected to said current amplifier element and to said power source another side; and
D) said current amplifier and said power source being selected so that said current amplifier is biased in said first biasing direction when said first and second contact elements are electrically separated from each other, and is biased in said second biasing direction when said first and second contact elements are in electrical contact with each other, said alarm device being activated by current generated by said current amplifier element when said amplifier element is biased in said second biasing direction.
28. The system for continuously monitoring a protective garment defined in Claim 27 further including an electrically insulating protective garment interposed between said first contact element and said second contact element.
29. The system for continuously monitoring a protective garment defined in Claim 28 wherein the workpiece is electrically conductive, and makes electrical contact between said first and second contact elements via a perforation in said protective garment.
30. A method of monitoring a protective garment comprising steps of:
A) placing a first electrical contact on a workpiece;
B) placing a second electrical contact on a worker;
C) electrically insulating the worker-mounted second elec-trical contact from the workpiece-mounted first electrical contact using an electrically insulated protective garment;

D) providing a power source;
E) providing an alarm;
F) electrically connecting the second electrical contact to one side of the power source;
G) electrically connecting one side of the alarm to the power source one side;
H) providing a current amplifier that acts as an open circuit when power is applied thereto in a first biasing direc-tion and acts as a current generator when power is applied thereto in a second biasing direction;
I) electrically connecting one side of the current amplifier to another side of the power source;
J) electrically connecting another side of the current amplifier to another side of the alarm;
K) electrically connecting the first electrical contact to the current amplifier and to the power source another side and biasing the current amplifier in the second biasing direction when the second electrical contact is electrically connected to the first electrical contact and biasing the current amplifier in the first biasing direction when the second electrical contact is electrically insulated from the first electrical contact;
L) electrically connecting the first electrical contact to the second electrical contact through any perforation occurring in the protective garment; and
M) activating the alarm using current generated by the current amplifier when the current amplifier is biased in the second biasing direction.
31. The method of monitoring a protective garment defined in Claim 30 further including a step of providing the current amplifier with a gain of at least 25,000.
32. The method of monitoring a protective garment defined in Claim 31 further including a step of adjusting the sensitivity of the current amplifier.
33. The system for continuously monitoring a protective gar- ment defined in Claim 5 wherein said sensitivity adjusting element includes a variable resistor.
34. The system for continuously monitoring a protective garment defined in Claim 5 wherein said sensitivity adjusting element includes a jump element.
35. The system for continuously monitoring a protective garment defined in Claim 4 further including a system start-up integrity checking circuit.
36. The system for continuously monitoring a protective garment defined in Claim 35 wherein said integrity checking circuit includes a capacitor connected to said first electrical contact element and to said second electrical contact element and a normally closed switch connected across said capacitor.
37. The system for continuously monitoring a protective gar-ment defined in Claim 36 wherein said circuit for connecting said alarm device to said power source further includes a normally open on/off switch connected said power source and to said normally closed switch to open said normally closed switch when said normally open switch is closed and to close said normally closed switch when said normally open switch is open.
38. The system for continuously monitoring a protective garment defined in Claim 5 further including a battery monitoring circuit.
39. The system for continuously monitoring a protective garment defined in Claim 38 wherein said battery monitoring circuit includes a comparitor connected to said power source, and a zenner diode connected to said comparitor.
40. The system for continuously monitoring a protective garment defined in Claim 4 further including a plurality of capacitors connected around said transistor.
41. The system for continuously monitoring a protective garment defined in Claim 1 wherein said alarm device includes a relay-type device.
42. The system for continuously monitoring a protective garment defined in Claim 8 further including a feedback circuit connected to said alarm device and to said first electrical wire.
43. The system for continuously monitoring a protective garment defined iri Claim 42 wherein said feedback circuit includes a transistor connected to said alarm device.
44. The system for continuously monitoring a protective garment defined in Claim 43 further including a plurality of capacitors connected around said feedback circuit transistor.

45. The system for continuously monitoring a protective garment defined in Claim 44 further including a diode and a resistor connected in series with each other and between said feedback circuit transistor and said alarm device.
46. The system for continuously monitoring a protective garment defined in Claim 27 including means for connecting a plurality of workers to said alarm device.
47. The system for continuously monitoring a protective garment defined in Claim 27 including means for connecting a plurality of workpieces to said alarm device.
48. The system for continuously monitoring a protective garment defined in Claim 46 including means for connecting a plurality of workpieces to said alarm device.
49. A system for continuously monitoring a protective garment for detecting and signalling the occurrence of a breach in such protective garment comprising:
A) a unit including
(1) a housing,
(2) a power source,
(3) an alarm device, and (4) a circuit for connecting said alarm device to said power source;
B) normally open switch means for connecting said circuit to said alarm device when closed, said switch means being closed when the person's skin contacts some portion of a workpiece on which that person is working, said switch means including
(1) a first contact element electrically connected with one side of said power source,
(2) a second contact element electrically connected to one side of said alarm element,
(3) a first electrical wire connecting another side of said alarm device to another side of said power source,
(4) a first electrical contact element connected to said power source another side and mountable in electrical contact with the person,
(5) a second electrical contact element connected to said current amplifier and to said power source one side and being mountable on the workpiece,
(6) said protective garment being electrically insulating and being electrically interposed between the person and said electrically conductive workpiece and preventing formation of an electrically conductive path between said workpiece and said first electrical contact element when said protective garment is imperforate and permitting formation of an electri-cally conductive path between said workpiece and said first electrical contact element via any perforation in said protective garment; and
C) means for connecting a plurality of workers to said alarm device.
50. A system for continuously monitoring a protective garment for detecting and signalling the occurrence of a breach in such protective garment comprising:
A) a unit including
(1) a housing,
(2) a power source,
(3) an alarm device, and
(4) a circuit for connecting said alarm device to said power source;
B) normally open switch means for connecting said circuit to said alarm device when closed, said switch means being closed when the person's skin contacts some portion of a workpiece on which that person is working, said switch means including
(1) a first contact element electrically connected with one side of said power source,
(2) a second contact element electrically connected to one side of said alarm element,
(3) a first electrical wire connecting another side of said alarm device to another side of said power source,
(4) a first electrical contact element connected to said power source another side and mountable in electrical contact with the person,
(5) a second electrical contact element connected to said current amplifier and to said power source one side and being mountable on the workpiece,
(6) said protective garment being electrically insulating and being electrically interposed between the person and said electrically conductive workpiece and preventing formation of an electrically conductive path between said workpiece and said first electrical contact element when said protective garment is imperforate and permitting formation of an electrically conductive path between said workpiece and said first electrical contact element via any perforation in said protective garment; and
C) means for connecting a plurality of workpieces to said alarm device.
51. The system for continuously monitoring a protective gar-ment defined in Claim 49 further including means for sensing if either said first electrical contact element or said second electrical contact element is not making proper electrical contact with said person or said workpiece respectively.
52. The system for continuously monitoring a protective gar-ment defined in Claim 50 further including means for sensing if either said first electrical contact element or said second electrical contact element is not making proper electrical contact with said person or said workpiece respectively.