US6408204B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatuses and methods for extravasation detection
Assignee: Bayer Healthcare LLC
•
Filing: 1999-07-28
•
Granted: 2002-06-18
•
Expires: 2019-07-28
Abstract
Abstract An apparatus for the detection of extravasation is positioned in a manner so that the vicinity of a site is available for palpation and is visible for visual inspection. Another embodiment of the apparatus improves the sensitivity of detection by positioning an energy source and a receiver between a first layer of a high dielectric material and a second lay of a low dielectric material. The apparatus may further include a third layer of a conductive material to shield the apparatus from stray capacitance. In addition, a system for detection of extravasation includes an array of sensors located at, adjacent to and/or remote from an injection site.
Inventors
- 👤 Alan D. Hirschman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:38
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/05; A61B5/053; A61B5/0537; A61B5/48; A61B5/4869; A61M; A61M5/00; A61M5/14; A61M5/168; A61M5/16831; A61M5/16836
Claims Analysis
Total Claims: 119
Claim 1
Independent Claim
88 words
An apparatus for the detection of extravasation, the apparatus comprising: at least a first energy source to supply energy to tissue in the vicinity of an injection site; and at least a first receiver to measure a signal resulting from the energy supplied to the tissue by the first energy source, the first energy source and the first receiver being arranged to define an open area around the injection site, the open area adapted to allow for palpation or visual inspection of the vicinity of the injection site.
Claim 2
Independent Claim
88 words
An apparatus for the detection of extravasation, the apparatus comprising: at least a first energy source to supply energy to tissue in the vicinity of an injection site; and at least a first receiver to measure a signal resulting from the energy supplied to the tissue by the first energy source, the first energy source and the first receiver being arranged to define an open area around the injection site, the open area adapted to allow for palpation or visual inspection of the vicinity of the injection site.
Claim 3
Dependent Claim
21 words
The apparatus of claim 1 wherein the first energy source and the first receiver physically contact the skin of a patient.
Claim 4
Dependent Claim
19 words
The apparatus of claim 1 wherein the first energy source and the first receiver are disposed on a base.
Claim 5
Dependent Claim
23 words
The apparatus of claim 1 wherein the at least a first energy source and the at least a first receiver comprise a transceiver.
Claim 6
Dependent Claim
19 words
The apparatus of claim 1 wherein the signal represents a change in the bulk electrical properties of the tissue.
Claim 7
Dependent Claim
24 words
The apparatus of claim 1 wherein the first energy source and the first receiver are in ohmic contact with the skin of a patient.
Claim 8
Dependent Claim
18 words
The apparatus of claim 3 wherein the base comprises two opposing portions joined together by a bridge region.
Claim 9
Dependent Claim
20 words
The apparatus of claim 7 wherein the open area is defined by the bridge region and the two opposing portions.
Claim 10
Dependent Claim
28 words
The apparatus of claim 1 wherein each of the at least a first energy source and the at least a first receiver is disposed on a base portion.
Claim 11
Dependent Claim
18 words
The apparatus of claim 9 wherein the base portions are positioned on opposing sides of the injection site.
Claim 12
Dependent Claim
15 words
The apparatus of claim 9 wherein the open area is defined by the base portions.
Claim 13
Dependent Claim
12 words
The apparatus of claim 7 wherein each opposing portion is substantially rectangular.
Claim 14
Dependent Claim
12 words
The apparatus of claim 7 wherein the bridge region is substantially rectangular.
Claim 15
Dependent Claim
12 words
The apparatus of claim 9 wherein the base portions are substantially rectangular.
Claim 16
Dependent Claim
18 words
The apparatus of claim 1 wherein the at least a first energy source comprises at least one electrode.
Claim 17
Dependent Claim
14 words
The apparatus of claim 15 wherein the at least one electrode comprises two electrodes.
Claim 18
Dependent Claim
17 words
The apparatus of claim 1 wherein the at least a first receiver comprises at least one electrode.
Claim 19
Dependent Claim
14 words
The apparatus of claim 17 wherein the at least one electrode comprises two electrodes.
Claim 20
Independent Claim
77 words
A method of detecting extravasation, the method comprising: arranging a first energy source and a first receiver to define an open area around an injection site, the open area adapted to allow for palpation or visual inspection of the injection site; applying energy to tissue in the vicinity of the site via the first energy source; and measuring a signal resulting from the energy supplied to the tissue by the first energy source with the first receiver.
Claim 21
Independent Claim
77 words
A method of detecting extravasation, the method comprising: arranging a first energy source and a first receiver to define an open area around an injection site, the open area adapted to allow for palpation or visual inspection of the injection site; applying energy to tissue in the vicinity of the site via the first energy source; and measuring a signal resulting from the energy supplied to the tissue by the first energy source with the first receiver.
Claim 22
Dependent Claim
18 words
The method of claim 19 , further comprising the step of palpating the vicinity of the injection site.
Claim 23
Dependent Claim
16 words
The method of claim 19 , further comprising visually inspecting the vicinity of the injection site.
Claim 24
Dependent Claim
19 words
The method of claim 19 , further comprising sensing swelling of tissue in the vicinity of the injection site.
Claim 25
Dependent Claim
36 words
The method of claim 19 wherein the step of arranging a first energy source and a first receiver comprises placing the first energy source and the first receiver in contact with the skin of the patient.
Claim 26
Dependent Claim
25 words
The method of claim 23 wherein the first energy source and the first receiver are placed in physical contact with the skin of a patient.
Claim 27
Dependent Claim
19 words
The method of claim 19 wherein the signal represents a change in the bulk electrical properties of the tissue.
Claim 28
Dependent Claim
21 words
The method of claim 19 wherein the first energy source and the first receiver are in ohmic contact with the patient.
Claim 29
Dependent Claim
31 words
The apparatus of claim 7 wherein each of the two opposing portions comprises an end, and the bridge is connected to the ends of the two opposing portions of the base.
Claim 30
Dependent Claim
19 words
The apparatus of claim 7 wherein the two opposing portions of the base are substantially parallel to each other.
Claim 31
Dependent Claim
18 words
The apparatus of claim 7 wherein the bridge is substantially perpendicular to the opposing portions of the base.
Claim 32
Independent Claim
95 words
An apparatus for the detection of extravasation, comprising: at least a first energy source to supply energy to tissue in the vicinity of an injection site; and at least a first receiver to measure a signal resulting from the energy supplied to the tissue by the first energy source, the at least a first energy source and the at least a first receiver being disposed on at least one base arranged to define an open area around the injection site, the open area adapted to allow for palpation or visual inspection of the injection site.
Claim 33
Independent Claim
95 words
An apparatus for the detection of extravasation, comprising: at least a first energy source to supply energy to tissue in the vicinity of an injection site; and at least a first receiver to measure a signal resulting from the energy supplied to the tissue by the first energy source, the at least a first energy source and the at least a first receiver being disposed on at least one base arranged to define an open area around the injection site, the open area adapted to allow for palpation or visual inspection of the injection site.
Claim 34
Dependent Claim
20 words
The apparatus of claim 30 wherein the at least one base is in contact with the skin of a patient.
Claim 35
Dependent Claim
21 words
The apparatus of claim 31 wherein the at least one base is in physical contact with the skin of the patient.
Claim 36
Dependent Claim
21 words
The apparatus of claim 30 wherein the at least one base comprises two opposing portions joined together by a bridge region.
Claim 37
Dependent Claim
19 words
The apparatus of claim 30 wherein the signal represents a change in the bulk electrical properties of the tissue.
Claim 38
Dependent Claim
14 words
The apparatus of claim 30 wherein the at least one base is substantially rectangular.
Claim 39
Dependent Claim
15 words
The apparatus of claim 30 wherein the at least one base comprises two base portions.
Claim 40
Dependent Claim
22 words
The apparatus of claim 36 wherein the at least a first energy source is disposed on one of the two base portions.
Claim 41
Dependent Claim
21 words
The apparatus of claim 36 wherein the at least a first receiver is disposed on one of the two base portions.
Claim 42
Dependent Claim
14 words
The apparatus of claim 36 wherein each of the base portions is substantially rectangular.
Claim 43
Dependent Claim
33 words
The apparatus of claim 36 wherein each of the at least a first energy source and the at least a first receiver is disposed on a respective one of the two base portions.
Claim 44
Dependent Claim
16 words
The apparatus of claim 36 , further comprising a bridge disposed between the two base portions.
Claim 45
Dependent Claim
23 words
The apparatus of claim 30 wherein the at least a first energy source and the at least a first receiver comprise a transceiver.
Claim 46
Dependent Claim
18 words
The apparatus of claim 30 wherein the at least a first energy source comprises at least one electrode.
Claim 47
Dependent Claim
14 words
The apparatus of claim 43 wherein the at least one electrode comprises two electrodes.
Claim 48
Dependent Claim
17 words
The apparatus of claim 30 wherein the at least a first receiver comprises at least one electrode.
Claim 49
Dependent Claim
14 words
The apparatus of claim 45 wherein the at least one electrode comprises two electrodes.
Claim 50
Independent Claim
94 words
A method of detecting extravasation using at least a first energy source and at least a first receiver, the method comprising: applying energy to tissue in the vicinity of an injection site via the at least a first energy source; measuring a signal resulting from the energy supplied to the tissue by the at least a first energy source with the at least a first receiver; and palpating or visually inspecting an open area around the injection site defined by the at least a first energy source and the at least a first receiver.
Claim 51
Independent Claim
94 words
A method of detecting extravasation using at least a first energy source and at least a first receiver, the method comprising: applying energy to tissue in the vicinity of an injection site via the at least a first energy source; measuring a signal resulting from the energy supplied to the tissue by the at least a first energy source with the at least a first receiver; and palpating or visually inspecting an open area around the injection site defined by the at least a first energy source and the at least a first receiver.
Claim 52
Dependent Claim
19 words
The method of claim 47 , further comprising sensing swelling of tissue in the vicinity of the injection site.
Claim 53
Dependent Claim
25 words
The method of claim 47 wherein the at least a first energy source and the at least a first receiver are disposed on a base.
Claim 54
Independent Claim
102 words
An apparatus for the detection of extravasation, comprising: at least a first energy source to supply energy to tissue in the vicinity of an injection site; and at least a first receiver to measure a signal resulting from the energy supplied to the tissue by the at least a first energy source, the first energy source and the first receiver being disposed on at least one base in contact with the skin of a patient, the at least one base arranged to define an open area around the injection site adapted to allow for palpation or visual inspection of the injection site.
Claim 55
Independent Claim
102 words
An apparatus for the detection of extravasation, comprising: at least a first energy source to supply energy to tissue in the vicinity of an injection site; and at least a first receiver to measure a signal resulting from the energy supplied to the tissue by the at least a first energy source, the first energy source and the first receiver being disposed on at least one base in contact with the skin of a patient, the at least one base arranged to define an open area around the injection site adapted to allow for palpation or visual inspection of the injection site.
Claim 56
Dependent Claim
15 words
The apparatus of claim 50 wherein the at least one base comprises two base portions.
Claim 57
Dependent Claim
22 words
The apparatus of claim 51 wherein the at least a first energy source is disposed on one of the two base portions.
Claim 58
Dependent Claim
22 words
The apparatus of claim 52 wherein the at least a first receiver is disposed on the other of the two base portions.
Claim 59
Dependent Claim
21 words
The apparatus of claim 50 wherein the at least one base comprises two opposing portions joined together by a bridge region.
Claim 60
Dependent Claim
14 words
The apparatus of claim 51 wherein each of the base portions is substantially rectangular.
Claim 61
Dependent Claim
15 words
The apparatus of claim 54 wherein each of the two opposing portions is substantially rectangular.
Claim 62
Dependent Claim
12 words
The apparatus of claim 54 wherein the bridge region is substantially rectangular.
Claim 63
Dependent Claim
18 words
The apparatus of claim 51 , further comprising a bridge region adapted to connect the two base portions.
Claim 64
Dependent Claim
12 words
The apparatus of claim 58 wherein the bridge region is substantially rectangular.
Claim 65
Dependent Claim
12 words
The apparatus of claim 54 wherein the open area is substantially rectangular.
Claim 66
Dependent Claim
26 words
The apparatus of claim 58 wherein each of the two bases comprises an end, and the bridge region is connected to the ends of the bases.
Claim 67
Dependent Claim
15 words
The apparatus of claim 58 wherein the bridge region is substantially perpendicular to the bases.
Claim 68
Dependent Claim
15 words
The apparatus of claim 51 wherein the base portions are substantially parallel to each other.
Claim 69
Dependent Claim
23 words
The apparatus of claim 50 wherein the at least a first energy source and the at least a first receiver comprise a transceiver.
Claim 70
Dependent Claim
18 words
The apparatus of claim 50 wherein the at least a first energy source comprises at least one electrode.
Claim 71
Dependent Claim
14 words
The apparatus of claim 65 wherein the at least one electrode comprises two electrodes.
Claim 72
Dependent Claim
17 words
The apparatus of claim 50 wherein the at least a first receiver comprises at least one electrode.
Claim 73
Dependent Claim
14 words
The apparatus of claim 67 wherein the at least one electrode comprises two electrodes.
Claim 74
Dependent Claim
19 words
The apparatus of claim 50 wherein the signal represents a change in the bulk electrical properties of the tissue.
Claim 75
Dependent Claim
12 words
The apparatus of claim 50 wherein the open area is substantially rectangular.
Claim 76
Independent Claim
128 words
An apparatus for the detection of extravasation, comprising: a base comprising two opposing portions joined together by a bridge region, the opposing portions and the bridge portion arranged to define an open area around the injection site; at least a first energy source to supply energy to tissue in the vicinity of an injection site, the at least a first energy source disposed on at least one of the two opposing portions; and at least a first receiver to measure a signal resulting from the energy supplied to the tissue by the first energy source, the at least a first receiver disposed on at least one of the two opposing portions; wherein the open area is adapted to allow for palpation or visual inspection of the injection site.
Claim 77
Independent Claim
128 words
An apparatus for the detection of extravasation, comprising: a base comprising two opposing portions joined together by a bridge region, the opposing portions and the bridge portion arranged to define an open area around the injection site; at least a first energy source to supply energy to tissue in the vicinity of an injection site, the at least a first energy source disposed on at least one of the two opposing portions; and at least a first receiver to measure a signal resulting from the energy supplied to the tissue by the first energy source, the at least a first receiver disposed on at least one of the two opposing portions; wherein the open area is adapted to allow for palpation or visual inspection of the injection site.
Claim 78
Dependent Claim
27 words
The apparatus of claim 71 wherein each of the opposing portions comprises an end, and the bridge region is disposed between the ends of the opposing portions.
Claim 79
Dependent Claim
16 words
The apparatus of claim 71 wherein the bridge region is substantially perpendicular to the opposing portions.
Claim 80
Dependent Claim
18 words
The apparatus of claim 71 wherein each of the opposing portions is substantially perpendicular to the bridge region.
Claim 81
Dependent Claim
21 words
The apparatus of claim 71 wherein at least one of the two opposing portions is substantially perpendicular to the bridge region.
Claim 82
Dependent Claim
16 words
The apparatus of claim 71 wherein the two opposing portions are substantially parallel to each other.
Claim 83
Dependent Claim
18 words
The apparatus of claim 71 wherein the opposing portions are positioned on opposing sides of the injection site.
Claim 84
Dependent Claim
14 words
The apparatus of claim 71 wherein each of the opposing portions is substantially rectangular.
Claim 85
Dependent Claim
12 words
The apparatus of claim 71 wherein the bridge region is substantially rectangular.
Claim 86
Dependent Claim
16 words
The apparatus of claim 71 wherein at least one of the opposing portions is substantially rectangular.
Claim 87
Dependent Claim
18 words
The apparatus of claim 71 wherein the at least a first energy source comprises at least one electrode.
Claim 88
Dependent Claim
14 words
The apparatus of claim 81 wherein the at least one electrode comprises two electrodes.
Claim 89
Dependent Claim
17 words
The apparatus of claim 71 wherein the at least a first receiver comprises at least one electrode.
Claim 90
Dependent Claim
14 words
The apparatus of claim 83 wherein the at least one electrode comprises two electrodes.
Claim 91
Dependent Claim
14 words
The apparatus of claim 71 wherein the base contacts the skin of a patient.
Claim 92
Dependent Claim
15 words
The apparatus of claim 85 wherein the base physically contacts the skin of the patient.
Claim 93
Dependent Claim
23 words
The apparatus of claim 71 wherein the at least a first energy source and the at least a first receiver comprise a transceiver.
Claim 94
Independent Claim
111 words
An apparatus for the detection of extravasation, comprising: at least a first energy source to supply energy to tissue in the vicinity of an injection site, the at least a first energy source disposed on a first portion of a base; and at least a first receiver to measure a signal resulting from the energy supplied to the tissue by the first energy source, the at least a first receiver disposed on a second portion of the base; the first and second portions of the base arranged to define an open area around the injection site, the open area adapted to allow for palpation or visual inspection of the injection site.
Claim 95
Independent Claim
111 words
An apparatus for the detection of extravasation, comprising: at least a first energy source to supply energy to tissue in the vicinity of an injection site, the at least a first energy source disposed on a first portion of a base; and at least a first receiver to measure a signal resulting from the energy supplied to the tissue by the first energy source, the at least a first receiver disposed on a second portion of the base; the first and second portions of the base arranged to define an open area around the injection site, the open area adapted to allow for palpation or visual inspection of the injection site.
Claim 96
Dependent Claim
21 words
The apparatus of claim 88 , further comprising a bridge region disposed between the first and second portions of the base.
Claim 97
Dependent Claim
31 words
The apparatus of claim 89 wherein each of the first and second portions comprises an end, and the bridge region is disposed between the ends of the first and second portions.
Claim 98
Dependent Claim
17 words
The apparatus of claim 88 wherein the first and second portions of the base are substantially rectangular.
Claim 99
Dependent Claim
21 words
The apparatus of claim 88 wherein at least one of the first and second portions of the base is substantially rectangular.
Claim 100
Dependent Claim
12 words
The apparatus of claim 89 wherein the bridge region is substantially rectangular.
Claim 101
Dependent Claim
20 words
The apparatus of claim 88 wherein the first and second portions of the base are substantially parallel to each other.
Claim 102
Dependent Claim
23 words
The apparatus of claim 88 wherein the first and second portions of the base are disposed on opposite sides of the injection site.
Claim 103
Dependent Claim
26 words
The apparatus of claim 89 wherein the first portion, the second portion and the bridge region cooperate to define the open area around the injection site.
Claim 104
Dependent Claim
18 words
The apparatus of claim 89 wherein the bridge region is substantially perpendicular to the first and second portions.
Claim 105
Dependent Claim
18 words
The apparatus of claim 89 wherein the first and second portions are substantially perpendicular to the bridge region.
Claim 106
Dependent Claim
17 words
The apparatus of claim 89 wherein the first and second portions are substantially parallel to each other.
Claim 107
Dependent Claim
11 words
The apparatus of claim 89 wherein the base is substantially U-shaped.
Claim 108
Dependent Claim
12 words
The apparatus of claim 88 wherein the open area is substantially rectangular.
Claim 109
Dependent Claim
23 words
The apparatus of claim 88 wherein the at least a first energy source and the at least a first receiver comprise a transceiver.
Claim 110
Dependent Claim
18 words
The apparatus of claim 88 wherein the at least a first energy source comprises at least one electrode.
Claim 111
Dependent Claim
14 words
The apparatus of claim 103 wherein the at least one electrode comprises two electrodes.
Claim 112
Dependent Claim
17 words
The apparatus of claim 88 wherein the at least a first receiver comprises at least one electrode.
Claim 113
Dependent Claim
14 words
The apparatus of claim 105 wherein the at least one electrode comprises two electrodes.
Claim 114
Dependent Claim
23 words
The apparatus of claim 88 wherein the first and second portions of the base are in contact with the skin of a patient.
Claim 115
Dependent Claim
19 words
The apparatus of claim 88 wherein the signal represents a change in the bulk electrical properties of the tissue.
Claim 116
Dependent Claim
13 words
The method of claim 47 , further comprising determining whether extravasation has occurred.
Claim 117
Dependent Claim
16 words
The method of claim 109 , further comprising terminating an injection procedure if extravasation has occurred.
Claim 118
Dependent Claim
13 words
The method of claim 20 , further comprising determining whether extravasation has occurred.
Claim 119
Dependent Claim
16 words
The method of claim 111 , further comprising terminating an injection procedure if extravasation has occurred.
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 2005-06-17 | 2005-12-17 | 2006-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2009-06-17 | 2009-12-17 | 2010-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2013-06-17 | 2013-12-17 | 2014-06-18 | $7700.00 | Window Closed / Lapsed |