EP0343858A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Remote temperature control monitoring apparatus and technique
Assignee: Individual
•
Filing: 1989-05-18
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Granted: —
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Expires: 2009-05-18
Abstract
Abstract A thermometry system comprising an implantable element having temperature dependent NMR properties, apparatus for applying an RF field to the implantable element, and apparatus for sensing the temperature dependent NMR response of the implantable element and for providing an output indication of temperature of the implantable element.
Inventors
- 👤 Zvi Taicher
- 👤 Mordechai Shporer
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-27 19:00
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/0002; A61B5/0004; A61B5/0008; G; G01; G01R; G01R33/00; G01R33/20; G01R33/28; G01R33/44; G01R33/48; G01R33/4804
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
46 words
A thermometry system comprising: at least one implantable element having temperature dependent NMR properties; means for applying an RF field to the at least one implantable element, and apparatus for sensing the temperature dependent NMR response thereof and for providing an output indication of temperature thereof.
Claim 2
Dependent Claim
46 words
A thermometry system comprising: at least one implantable element having temperature dependent NMR properties; means for applying an RF field to the at least one implantable element, and apparatus for sensing the temperature dependent NMR response thereof and for providing an output indication of temperature thereof.
Claim 3
Dependent Claim
32 words
A thermometry system according to claim 1 and wherein said at least one implantable element comprises iron garnet having the following chemical composition: 5Fe₂O₃3M₂O₃ , wherein M is a rare earth metal.
Claim 4
Dependent Claim
24 words
A thermometry system according to claim 1 and wherein said means for applying an RF field comprises a matching network and an RF antenna.
Claim 5
Dependent Claim
19 words
A thermometry system according to claim 1 and wherein said at least one implantable element does not require calibration.
Claim 6
Dependent Claim
40 words
A thermometry system according to claim 1 and wherein said at least one implantable element comprises a plurality of implanted elements, each having different nuclear magnetic resonance frequency ranges so as to enable simultaneous measurement of temperatures at multiple locations.
Claim 7
Dependent Claim
61 words
A technique for in vivo temperature measurement of tissue comprising the steps of: implanting in living tissue at least one element having temperature dependent NMR properties; applying an RF field to the at least one element; sensing the temperature dependent NMR response of the at least one element; and providing an output indication of temperature of the at least one element.
Claim 8
Dependent Claim
61 words
A technique for in vivo temperature measurement of tissue comprising the steps of: implanting in living tissue at least one element having temperature dependent NMR properties; applying an RF field to the at least one element; sensing the temperature dependent NMR response of the at least one element; and providing an output indication of temperature of the at least one element.
Claim 9
Dependent Claim
32 words
A technique according to claim 6 and wherein said element remains implanted in the tissue over an extended period, such as weeks and months, over which multiple clinical hyperthermia treatments may occur.
Claim 10
Dependent Claim
67 words
A clinical hyperthermia system comprising: means for selectably heating tissue in vivo; and means for monitoring the temperature of the tissue including: at least one implantable element having temperature dependent NMR properties; means for applying an RF field to the implantable element; and means for sensing the temperature dependent NMR response of the implantable element and for providing an output indication of temperature of the implantable element.
Claim 11
Dependent Claim
67 words
A clinical hyperthermia system comprising: means for selectably heating tissue in vivo; and means for monitoring the temperature of the tissue including: at least one implantable element having temperature dependent NMR properties; means for applying an RF field to the implantable element; and means for sensing the temperature dependent NMR response of the implantable element and for providing an output indication of temperature of the implantable element.
Claim 12
Dependent Claim
31 words
A system according to claim 8 and wherein said at least one implantable element comprises iron garnet having the following chemical composition: 5Fe₂O₃3M₂O₃ , wherein M is a rare earth metal.
Claim 13
Dependent Claim
23 words
A system according to claim 8 and wherein said means for applying an RF field comprises a matching network and an RF antenna.
Claim 14
Dependent Claim
22 words
A system according to claim 8 and wherein said RF antenna is also employed as part of said means for selectably heating.
Claim 15
Dependent Claim
41 words
A system according to claim 8 wherein said means for selectably heating tissue in vivo comprises means for applying an RF heating field thereto and wherein said system also comprises means for monitoring the field distribution of said RF heating field.
Claim 16
Dependent Claim
59 words
A technique for localized heating of living tissue comprising the steps of: implanting in living tissue at least one element having temperature dependent NMR properties, selectably heating living tissue; applying an RF field to the at least one element; sensing the temperature dependent NMR response of the element; and providing an output indication of temperature of the implantable element.
Claim 17
Dependent Claim
59 words
A technique for localized heating of living tissue comprising the steps of: implanting in living tissue at least one element having temperature dependent NMR properties, selectably heating living tissue; applying an RF field to the at least one element; sensing the temperature dependent NMR response of the element; and providing an output indication of temperature of the implantable element.
Claim 18
Dependent Claim
36 words
A technique according to claim 13 and wherein said at least one implanted element may remain in the tissue over an extended period, such as weeks and months, over which multiple clinical hyperthermia treatments may occur.
Claim 19
Dependent Claim
18 words
A technique according to claim 13 and wherein said at least one implanted element does not require calibration.
Claim 20
Dependent Claim
40 words
A technique according to claim 13 and wherein in said implanting and sensing steps a plurality of implanted elements are employed, each having different nuclear magnetic resonance frequency ranges so as to provide simultaneous measurement of temperatures at multiple locations.
Claim 21
Dependent Claim
21 words
A technique according to claim 13 and also comprising the step of sensing an electromagnetic field applied for heating the tissue.
Claim 22
Dependent Claim
50 words
A technique according to claim 13 and wherein the step of selectably heating tissue in vivo comprises the step of applying an RF heating field thereto and the technique also comprises measuring the distribution of the RF heating field at an NMR resonance frequency of said at least one element.
Claim 23
Dependent Claim
51 words
A technique according to claim 18 and wherein said step of measuring the distribution of the RF heating field takes place at times other than those at which an RF heating field is applied in a time shared arrangement and at a different frequency than that of the RF heating field.
References Cited (Backward Citations)
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