WO2011014465A3 - Lead for use in rf field - Google Patents
Lead for use in rf field Download PDFInfo
- Publication number
- WO2011014465A3 WO2011014465A3 PCT/US2010/043288 US2010043288W WO2011014465A3 WO 2011014465 A3 WO2011014465 A3 WO 2011014465A3 US 2010043288 W US2010043288 W US 2010043288W WO 2011014465 A3 WO2011014465 A3 WO 2011014465A3
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- lead
- mri
- electrode
- energy
- node
- Prior art date
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N1/00—Electrotherapy; Circuits therefor
- A61N1/02—Details
- A61N1/04—Electrodes
- A61N1/05—Electrodes for implantation or insertion into the body, e.g. heart electrode
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N1/00—Electrotherapy; Circuits therefor
- A61N1/02—Details
- A61N1/08—Arrangements or circuits for monitoring, protecting, controlling or indicating
- A61N1/086—Magnetic resonance imaging [MRI] compatible leads
Abstract
A lead such as used for pacemaking or neural stimulation has a current block IC which blocks current when RF is detected. In this way problems of tissue heating are reduced or eliminated when the patient carrying such a lead is given an MRI. The lead may also detect localized temperature, to be reported to equipment external to the lead. This may permit more judicious use of the RF energy, for example during an MRI session. Localized and spurious tissue heating nearby to an electrode of a lead, due to RF energy from an MRI, is reduced or eliminated by detecting the RF field, deriving energy from the field, and actively driving a node that is coupled to such an electrode so as to minimize voltage excursions at the electrode. A state is maintained or set within electronics nearby to an electrode of a lead, so that a can which connects with the lead is able to learn whether an MRI event has occurred since the last time that the can had sent commands to the electronics to set particular internal states. For a lead that delivers pacing pulses, a pacing detector is provided in addition to an MRI detector, and the blocking action is carried out most of the time but is disabled briefly for each pacing pulse. During a time of presence of RF energy, a bucking circuit attempts, to the extent possible, to drive a node toward blood potential, the node capacitively coupled with electrodes of the lead.
Applications Claiming Priority (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US23050509P | 2009-07-31 | 2009-07-31 | |
| US61/230,505 | 2009-07-31 | ||
| US29685310P | 2010-01-20 | 2010-01-20 | |
| US61/296,853 | 2010-01-20 | ||
| US31637810P | 2010-03-22 | 2010-03-22 | |
| US61/316,378 | 2010-03-22 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| WO2011014465A2 WO2011014465A2 (en) | 2011-02-03 |
| WO2011014465A3 true WO2011014465A3 (en) | 2011-05-05 |
Family
ID=43529922
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/US2010/043286 WO2011014464A2 (en) | 2009-07-31 | 2010-07-27 | Lead for use in rf field |
| PCT/US2010/043288 WO2011014465A2 (en) | 2009-07-31 | 2010-07-27 | Lead for use in rf field |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/US2010/043286 WO2011014464A2 (en) | 2009-07-31 | 2010-07-27 | Lead for use in rf field |
Country Status (1)
| Country | Link |
|---|---|
| WO (2) | WO2011014464A2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120123496A1 (en) * | 2010-11-12 | 2012-05-17 | Medtronic, Inc. | Connectivity detection and type identification of an implanted lead for an implantable medical device |
| AU2016271986A1 (en) * | 2015-05-29 | 2017-12-07 | University Of Waikato | A surgical implant conductor with increased radio frequency alternating current resistance |
| CN109541511B (en) * | 2018-11-26 | 2020-02-14 | 清华大学 | Temperature rise prediction method and device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030204217A1 (en) * | 2002-04-25 | 2003-10-30 | Wilson Greatbatch | MRI-safe cardiac stimulation device |
| US20050043761A1 (en) * | 2000-04-20 | 2005-02-24 | Patrick Connelly | MRI-compatible implantable device |
| JP2006518631A (en) * | 2003-01-31 | 2006-08-17 | ザ ボード オブ トラスティーズ オブ ザ リーランド スタンフォード ジュニア ユニバーシティ | Detection of apical motion for monitoring heart failure |
| US20090163980A1 (en) * | 2007-12-21 | 2009-06-25 | Greatbatch Ltd. | Switch for turning off therapy delivery of an active implantable medical device during mri scans |
-
2010
- 2010-07-27 WO PCT/US2010/043286 patent/WO2011014464A2/en not_active Application Discontinuation
- 2010-07-27 WO PCT/US2010/043288 patent/WO2011014465A2/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050043761A1 (en) * | 2000-04-20 | 2005-02-24 | Patrick Connelly | MRI-compatible implantable device |
| US20030204217A1 (en) * | 2002-04-25 | 2003-10-30 | Wilson Greatbatch | MRI-safe cardiac stimulation device |
| JP2006518631A (en) * | 2003-01-31 | 2006-08-17 | ザ ボード オブ トラスティーズ オブ ザ リーランド スタンフォード ジュニア ユニバーシティ | Detection of apical motion for monitoring heart failure |
| US20090163980A1 (en) * | 2007-12-21 | 2009-06-25 | Greatbatch Ltd. | Switch for turning off therapy delivery of an active implantable medical device during mri scans |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2011014464A2 (en) | 2011-02-03 |
| WO2011014465A2 (en) | 2011-02-03 |
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