WO2002031909A1 - Improved antenna for miniature implanted medical device - Google Patents
Improved antenna for miniature implanted medical device Download PDFInfo
- Publication number
- WO2002031909A1 WO2002031909A1 PCT/US2001/030515 US0130515W WO0231909A1 WO 2002031909 A1 WO2002031909 A1 WO 2002031909A1 US 0130515 W US0130515 W US 0130515W WO 0231909 A1 WO0231909 A1 WO 0231909A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- connection
- telemetry system
- microdevice
- tuning
- loop antenna
- 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
- A61N1/18—Applying electric currents by contact electrodes
- A61N1/32—Applying electric currents by contact electrodes alternating or intermittent currents
- A61N1/36—Applying electric currents by contact electrodes alternating or intermittent currents for stimulation
- A61N1/372—Arrangements in connection with the implantation of stimulators
- A61N1/37211—Means for communicating with stimulators
- A61N1/37217—Means for communicating with stimulators characterised by the communication link, e.g. acoustic or tactile
- A61N1/37223—Circuits for electromagnetic coupling
- A61N1/37229—Shape or location of the implanted or external antenna
-
- 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
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N1/00—Electrotherapy; Circuits therefor
- A61N1/18—Applying electric currents by contact electrodes
- A61N1/32—Applying electric currents by contact electrodes alternating or intermittent currents
- A61N1/36—Applying electric currents by contact electrodes alternating or intermittent currents for stimulation
- A61N1/372—Arrangements in connection with the implantation of stimulators
- A61N1/37205—Microstimulators, e.g. implantable through a cannula
Definitions
- the present invention relates to implantable medical devices, and more particularly to implantable micro stimulators or sensors, hereafter referred to as microstimulators or microsensors.
- Such devices have electrodes attached to muscle or nerve fibers, through which the devices electrically stimulate the muscle or nerve fibers, or sense one or more physiological states present in the muscle or nerve fibers.
- the invention relates to an improved antenna for such implantable microdevices, for both receiving signals from an external device, and transmitting signals to an external device.
- Neurological disorders are often caused by neural impulses failing to reach their natural destination in otherwise functional body systems. Local nerves and muscles may function, but, for various reasons, injury, stroke, or other cause, the stimulating signals do not reach their natural destination. For example, paraplegics and quadriplegics have intact muscles and only lack the complete brain-to-muscle nerve link which conducts the signal to the muscles.
- Prosthetic devices have been used for some time to provide electrical stimulation to excite muscle, nerve or other cells to provide relief from paralysis, and various other physical disorders have been identified which may be treated by electrical stimulation devices. Some of these devices have been large bulky systems providing electrical pulses through conductors extending through the skin. Disadvantageously, complications, including the possibility of infection, arise in the use of stimulators which have conductors extending through the skin. Other smaller stimulators have been developed that are fully implantable and are controlled through high-frequency, modulated RF, telemetry signals. Such systems designed to stimulate nerves or muscles to provide motion are know as Functional Electrical Stimulation (FES) systems. An FES system using telemetry signals is set forth in U.S. Patent No.
- the 774 patent teaches a source of electrical energy, modulated in accordance with desired control information, to selectively power and control numerous, small stimulators, disposed at various locations within the body.
- a desired progressive muscular motion may be achieved through the successive or simultaneous stimulation of numerous stimulators, directed by a single source of information and energy outside the body.
- a design of a small functionally suitable stimulator, a microstimulator is taught is U.S. Patent No. 5,324,316 issued June 28,1994 for "Implantable Microstimulator.”
- the '316 patent teaches all the elements required for successful construction and operation of a microstimulator.
- the microstimulator is capable of receiving and storing sufficient energy to provide the desired stimulating pulses, and also is able to respond to received control information defining pulse duration, current amplitude and shape.
- the microstimulator of the '316 patent can also be easily implanted, such as by expulsion through a hypodermic needle.
- the '316 patent is incorporated herein by reference.
- microstimulators utilize a telemetry receiver based on modulating an inductive power signal provided to the microstimulator. Similarly, signals are back transmitted from the microstimulator using the same circuits. By using components already present in the microstimulator, these telemetry systems do not require substantial additional circuitry. However, such inductive telemetry methods are limited by the resonant frequencies of the existing coil, which are typically below 2 MHz. While this approach has proven adequate for many applications, there are potential problems with interfering signals. Further, much higher frequencies, 402 MHz to 405 MHz, have been designated by the Federal Communications Commission (FCC) for use with medical devices.
- FCC Federal Communications Commission
- Telemetry methods utilizing monopole and dipole antennas are known for use in the FCC designated frequency range, however, such antennas are, primarily, electrical field devices. Electrical field devices suffer from high tissue detuning (i.e., the surrounding tissue interacts with the electrical nature of circuit components to the extent that some effectiveness of tuning is lost) and may not provide the best performance for; implantable devices.
- Other telemetry systems utilizing a loop antenna inside the microdevice are also known in the art. Loop antennas have the advantage of being magnetic field devices, and are therefore less susceptible to tissue detuning. However, placing the loop antenna inside the case of a microdevice exhausts scarce space within the microdevices. What is needed is a telemetry system, suitable for operation in the
- the present invention addresses the above and other needs by providing a loop antenna formed on the case of an implantable microdevice.
- the improved antenna receives data transmitted from an external device, and transmits data to an external device.
- Such a loop antenna may be formed from two cylindrical sections separated by an insulating material on the case of the microdevice, or by separating a metal cylinder into two parallel semi-cylinders separated by an insulating material.
- a tuning circuit comprising capacitors and/or varactors is used to obtain resonance in the loop antenna, thus creating a sufficiently large effective antenna aperture.
- such a loop antenna is suitable for operation in the 402 MHz to 405 MHz frequency range, is a magnetic field device and therefore not susceptible to high absorption losses, and does not require space in the interior of the microdevice.
- a loop antenna is formed on the case of an implantable microdevice.
- the antenna By forming the antenna on the case, space inside the microdevice is available for circuit components.
- the existing electrodes, on the case of a microstimulator are combined with a reactive circuit to create a loop antenna.
- Magnetic field devices are less prone to degradation from tissue absorption than are electrical field devices, such as dipole and monopole antennas. Accordingly, once implanted, a magnetic field device is more stable and predictable than an electrical field device.
- a loop antenna provided in an implantable medical device may be tuned with an array of capacitors and/or varactors. Because of the small physical size of the antenna, the antenna is not an effective radiator at the targeted operating frequencies without tuning. Accordingly, the capacitance provided by an array of capacitors and/or varactors is adjusted to be equal to the inductive reactance of the loop, resulting in a high Q circuit and a larger effective antenna size.
- a telemetry system using a loop antenna provides non-inductive telemetry capability.
- Inductive telemetry requires that the transmitter and receiver be in very close proximity for effective operation.
- the telemetry system provided by the loop antenna does not include such limitations.
- FIG. 1 shows a patient with an implanted microdevice and an external device adapted to be in telecommunicative contact with the implanted microdevice;
- FIG. 2A depicts a first embodiment of a loop antenna formed on the case of an implantable microdevice
- FIG. 2B depicts a second embodiment of a loop antenna located on the case of an implantable microdevice
- FIG. 3A shows a preferred embodiment of a loop antenna created from the electrodes of a microdevice
- FIG. 3B shows a second preferred embodiment of a loop antenna created from one electrode of a microdevice
- FIG. 4A shows a telemetry system with a parallel connection
- FIG. 4B shows a telemetry system with a series connection.
- Corresponding reference characters indicate corresponding components throughout the several views of the drawings.
- the present invention applies to a microdevice 12 implanted in a patient 10.
- An external device 14 transmits signals, represented in FIG. 1 by the arced lines 18, to the microdevice 12 and the microdevice 12 transmits signals, represented by the arced lines 16, to the external device 14.
- the signals 18 transmitted to the microdevice 12 are principally control signals.
- the signals 16 transmitted from the microdevice 12 may be status signals, including diagnostic signals and/or performance signals (e.g., battery voltage), or signals that represent sensed physiological values.
- diagnostic signals and/or performance signals e.g., battery voltage
- signals used for other purposes may also be transmitted from an implanted device, and the transmission of those signals using a loop antenna formed on the case of an implantable device falls within the scope of the present invention.
- the present invention pertains to a loop antenna 13 formed on the case of the microdevice 12.
- a loop antenna 13 is shown in FIG. 2A in the form of two cylindrical sleeves 20A and 20B.
- the cylindrical sleeves 20A and 20B form the radiating element of the loop antenna.
- the cylindrical sleeves 20A and 20B are separated either by a gap or by an insulating material.
- a tuning element is typically required to increase the effective aperture of a loop antenna.
- the tuning element is reactively matched to the radiating element to create a resonant circuit.
- a tuning element comprising a tuning circuit 26A and a short 24 is shown in FIG. 2A.
- the tuning circuit 26A is electrically connected between the cylindrical sleeves 20A and 20B at adjacent points.
- the short 24 is electrically connected between the cylindrical sleeves 20A and 20B at adjacent points on the side of the microdevice 12 opposite the tuning circuit 26A.
- FIG. 2B An alternative embodiment of a loop antenna 13' is shown in FIG. 2B.
- the edges of the semi- cylinders 28A and 28B are separated by an insulating material or by gaps.
- the tuning element for the antenna 13' comprises a tuning circuit 26B and a short 24.
- the tuning circuit 26B is electrically connected between the semi-cylinders 28A and 28B at one end of the semi-cylinders 28A and 28B, and the short 24 is electrically connected between the semi-cylinders 28A and 28B at the opposite end.
- FIGS. 2A and 2B are intended for use with a microdevice having a cylindrical case.
- a cylindrical microdevice is well suited for implanting using a large gauge needle or a cannula.
- those skilled in the art will recognize that many other shapes are viable for implantable microdevices.
- the cylindrical and semi-cylindrical radiating elements of FIGS. 2A and 2B may not be appropriate for a non-cylindrical microdevice, the concepts taught for a cylindrical microdevice are readily adaptable to other shapes, and fall within the scope of the present invention.
- Known microstimulators include electrodes at each end of the microstimulator body.
- FIG. 3A A preferred embodiment of the present invention is shown in FIG. 3A, which uses the existing microstimulator electrodes 32 and 34 as the radiating element of the loop antenna. This embodiment is similar to the embodiment described in FIG. 2A, except that in FIG. 3A, the two cylinders that form the radiating element are not connected by a short. Such a connection would prevent the electrodes from performing their primary task of tissue stimulation.
- the tuning circuit 26A and short 24 of FIG. 2A are replaced by a first tuning circuit 36A and a second tuning circuit 36B.
- the first and second tuning circuits 36A and 36B and the electrodes 32 and 34 are designed to provide a resonant circuit at the transmit frequency, but the first and second tuning circuits 36A and 36B also are designed to have high impedance at stimulation frequencies. Thus, the electrodes 32 and 34 may serve both for stimulation and for data transmission.
- a second embodiment of a loop antenna using a microstimulator electrode as the radiating element is shown in FIG. 3B. In this embodiment, the electrode on one end of the microstimulator is divided by a gap, or an insulator, into two semi-cylindrical halves 38A and 38B. These semi-cylinders 38A and 38B are then electrically connected by a tuning circuit 40 at one end, and a short 24 at the opposite end.
- FIGS. 2A, 2B, 3A, and 3B Other electrode arrangements will be apparent to those skilled in the art. Many of these arrangements may be modified to provide a radiating element for a loop antenna, and such arrangements are intended to fall within the scope of the present invention.
- the design of a tuning circuit to combine with the radiating elements described by FIGS. 2A, 2B, 3A, and 3B, or other suitable radiating elements, is often difficult because of the difficulty in modeling the electrical behavior of such radiating elements.
- this difficulty may be dealt with by using a tuning circuit comprising an array of capacitors and varactors. The varactors may be adjusted to arrive at the desired resonant circuit needed for efficient operation of the receive circuit.
- the loop antenna of the present invention may be matched electrically to communication circuits in several ways to create an effective telemetry system. These ways include the use of series and parallel matching circuits.
- An example of a parallel matching circuit is shown in FIG. 4A.
- a transmit/receive switch 42 functionally has a first switched contact 43A and a second switched contact 43B, and one fixed contact 43C.
- a transmit driver 44 is connected to the first switched contact 43A, and a receiver amplifier 46 is connected to the second switched contact 43B.
- the receiver amplifier 46 amplifies received signals and provides the amplified signal to the receiver 48.
- the fixed contact 43C of the transmit/receive switch 42 connects to a matching network 50, and the matching network 50 connects to a tuning element 52 and a radiating element 54, which tuning element 52 and radiating element 54 are configured in a parallel relationship.
- the telemetry system of FIG. 4A functions as a transmit circuit by controlling the switch 42 so that the fixed contact 43C is connected to the first switched contact 43A. With the switch 42 in this position, the output of the transmit driver 44 is applied through the matching network 50 to the parallel-configured tuning element 52 and radiating element 54, and is transmitted from the radiating element 54.
- the telemetry system of FIG. 4A functions as a receiving circuit. That is, signals received through the parallel combination of the tuning element 52 and radiating element 54 are applied through the matching network 50 to the receiver amplifier 46. The output of the receiver amplifier 46 is then sent to the receiver 48.
- a telemetry system including a series matching circuit is shown in FIG. 4B.
- a transmit/receive switch 56 functionally has a first switched contact 57A and a second switched contact 57B, and one fixed contact 57C.
- a transmit driver 58 is connected to the first switched contact 57A, and a matching network 60 is connected to the second switched contact 57B.
- the matching network 60 provides received signals to a receiver amplifier 62, and the receiver amplifier 62 provides an amplified signal to a receiver 64.
- the fixed contact 57C of the transmit/receive switch 56 is connected to a tuning element 66, and the tuning element 66 is connected in series to a radiating element 68.
- the telemetry system of FIG. 4B functions operationally as a transmit circuit.
- the switch 56 controls the switch 56 so that the fixed contact 57C is connected to the first switched contact 57A. With the switch 56 in this position, the output of the transmit driver 58 is applied to the serial- configured tuning element 66 and radiating element 68, and is transmitted from the radiating element 68.
- the telemetry system of FIG. 4B functions as a receiving circuit. That is, signals received through the series combination of the tuning element 66 and radiating element 68 are sent through the matching network 60 to the receiver amplifier 62. The output of the receiver amplifier 62 is then sent to the receiver 64.
- FIGS. 4A and 4B are merely provided as particular embodiments of systems within which the invention may be practiced. Any application of a radiating element as described herein, formed on the case of a microdevice, is intended to fall within the scope of the present invention. While the invention herein disclosed has been described by means of specific embodiments and applications thereof, numerous modifications and variations could be made thereto by those skilled in the art without departing from the scope of the invention set forth in the claims.
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Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP01977270A EP1342289B1 (en) | 2000-10-11 | 2001-09-28 | Improved antenna for miniature implanted medical device |
DE60142178T DE60142178D1 (en) | 2000-10-11 | 2001-09-28 | IMPROVED ANTENNA FOR AN IMPLANTED MEDICAL MINIATURE DEVICE |
AU2001296403A AU2001296403A1 (en) | 2000-10-11 | 2001-09-28 | Improved antenna for miniature implanted medical device |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US23928900P | 2000-10-11 | 2000-10-11 | |
US60/239,289 | 2000-10-11 |
Publications (1)
Publication Number | Publication Date |
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WO2002031909A1 true WO2002031909A1 (en) | 2002-04-18 |
Family
ID=22901494
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2001/030515 WO2002031909A1 (en) | 2000-10-11 | 2001-09-28 | Improved antenna for miniature implanted medical device |
Country Status (5)
Country | Link |
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US (1) | US6804561B2 (en) |
EP (1) | EP1342289B1 (en) |
AU (1) | AU2001296403A1 (en) |
DE (1) | DE60142178D1 (en) |
WO (1) | WO2002031909A1 (en) |
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---|---|---|---|---|
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US8170680B2 (en) | 2008-03-04 | 2012-05-01 | Cardiac Pacemakers, Inc. | Implantable multi-length RF antenna |
US8588924B2 (en) | 2008-03-04 | 2013-11-19 | Cardiac Pacemakers, Inc. | Loaded RF antenna for implantable device |
US8972021B2 (en) | 2008-03-04 | 2015-03-03 | Cardiac Pacemakers, Inc. | Detachable helical antenna for implantable medical device |
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---|---|---|---|---|
US6675045B2 (en) * | 2001-01-16 | 2004-01-06 | Cardiac Pacemakers, Inc. | Split-can dipole antenna for an implantable medical device |
US6708065B2 (en) | 2001-03-02 | 2004-03-16 | Cardiac Pacemakers, Inc. | Antenna for an implantable medical device |
US7209792B1 (en) * | 2001-05-24 | 2007-04-24 | Advanced Bionics Corporation | RF-energy modulation system through dynamic coil detuning |
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US7221323B2 (en) * | 2003-12-12 | 2007-05-22 | Hans Gregory Schantz | Tag-along microsensor device and method |
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US7212866B1 (en) * | 2003-02-12 | 2007-05-01 | Advanced Bionics Corporation | Implantable neurostimulator having data repeater for long range control and data streaming |
US7239921B2 (en) * | 2003-06-23 | 2007-07-03 | Alfred E. Mann Foundation For Scientific Research | Housing for an implantable medical device |
US7280872B1 (en) | 2003-10-16 | 2007-10-09 | Transoma Medical, Inc. | Wireless communication with implantable medical device |
US7657312B2 (en) * | 2003-11-03 | 2010-02-02 | Cardiac Pacemakers, Inc. | Multi-site ventricular pacing therapy with parasympathetic stimulation |
US7769450B2 (en) * | 2004-11-18 | 2010-08-03 | Cardiac Pacemakers, Inc. | Cardiac rhythm management device with neural sensor |
US8396560B2 (en) | 2004-11-18 | 2013-03-12 | Cardiac Pacemakers, Inc. | System and method for closed-loop neural stimulation |
US8126560B2 (en) * | 2003-12-24 | 2012-02-28 | Cardiac Pacemakers, Inc. | Stimulation lead for stimulating the baroreceptors in the pulmonary artery |
US8024050B2 (en) | 2003-12-24 | 2011-09-20 | Cardiac Pacemakers, Inc. | Lead for stimulating the baroreceptors in the pulmonary artery |
US7643875B2 (en) * | 2003-12-24 | 2010-01-05 | Cardiac Pacemakers, Inc. | Baroreflex stimulation system to reduce hypertension |
US7794499B2 (en) * | 2004-06-08 | 2010-09-14 | Theken Disc, L.L.C. | Prosthetic intervertebral spinal disc with integral microprocessor |
US7191013B1 (en) | 2004-11-08 | 2007-03-13 | The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | Hand held device for wireless powering and interrogation of biomems sensors and actuators |
US8332047B2 (en) * | 2004-11-18 | 2012-12-11 | Cardiac Pacemakers, Inc. | System and method for closed-loop neural stimulation |
US7545272B2 (en) | 2005-02-08 | 2009-06-09 | Therasense, Inc. | RF tag on test strips, test strip vials and boxes |
US7660628B2 (en) * | 2005-03-23 | 2010-02-09 | Cardiac Pacemakers, Inc. | System to provide myocardial and neural stimulation |
US7499748B2 (en) * | 2005-04-11 | 2009-03-03 | Cardiac Pacemakers, Inc. | Transvascular neural stimulation device |
US7617003B2 (en) * | 2005-05-16 | 2009-11-10 | Cardiac Pacemakers, Inc. | System for selective activation of a nerve trunk using a transvascular reshaping lead |
CN101194432B (en) * | 2005-06-30 | 2012-09-05 | 诺基亚公司 | Device, module and method for shared antenna operation in communication environment based on RFID technology |
KR100724133B1 (en) * | 2005-10-11 | 2007-06-04 | 삼성전자주식회사 | Small accessories for remote monitoring |
US9168383B2 (en) | 2005-10-14 | 2015-10-27 | Pacesetter, Inc. | Leadless cardiac pacemaker with conducted communication |
EP1948296B2 (en) | 2005-10-14 | 2017-10-11 | Pacesetter, Inc. | Leadless cardiac pacemaker and system |
US7616990B2 (en) | 2005-10-24 | 2009-11-10 | Cardiac Pacemakers, Inc. | Implantable and rechargeable neural stimulator |
US7423496B2 (en) * | 2005-11-09 | 2008-09-09 | Boston Scientific Scimed, Inc. | Resonator with adjustable capacitance for medical device |
US20070162089A1 (en) * | 2006-01-09 | 2007-07-12 | Transoma Medical, Inc. | Cross-band communications in an implantable device |
US8660659B2 (en) | 2006-01-09 | 2014-02-25 | Greatbatch Ltd. | Cross-band communications in an implantable device |
US8301254B2 (en) | 2006-01-09 | 2012-10-30 | Greatbatch Ltd. | Cross-band communications in an implantable device |
US20070191904A1 (en) * | 2006-02-14 | 2007-08-16 | Imad Libbus | Expandable stimulation electrode with integrated pressure sensor and methods related thereto |
US7908014B2 (en) * | 2006-05-05 | 2011-03-15 | Alfred E. Mann Foundation For Scientific Research | Antenna on ceramic case |
US7720544B2 (en) * | 2006-06-09 | 2010-05-18 | Cardiac Pacemakers, Inc. | Systems for enabling telemetry in an implantable medical device |
US7613522B2 (en) | 2006-06-09 | 2009-11-03 | Cardiac Pacemakers, Inc. | Multi-antenna for an implantable medical device |
US8170668B2 (en) | 2006-07-14 | 2012-05-01 | Cardiac Pacemakers, Inc. | Baroreflex sensitivity monitoring and trending for tachyarrhythmia detection and therapy |
US8457734B2 (en) | 2006-08-29 | 2013-06-04 | Cardiac Pacemakers, Inc. | System and method for neural stimulation |
US7215600B1 (en) | 2006-09-12 | 2007-05-08 | Timex Group B.V. | Antenna arrangement for an electronic device and an electronic device including same |
US20080091255A1 (en) * | 2006-10-11 | 2008-04-17 | Cardiac Pacemakers | Implantable neurostimulator for modulating cardiovascular function |
US20080199894A1 (en) | 2007-02-15 | 2008-08-21 | Abbott Diabetes Care, Inc. | Device and method for automatic data acquisition and/or detection |
US8456301B2 (en) | 2007-05-08 | 2013-06-04 | Abbott Diabetes Care Inc. | Analyte monitoring system and methods |
CA2690742C (en) | 2007-06-21 | 2018-05-15 | Abbott Diabetes Care Inc. | Health management devices and methods |
US8457757B2 (en) * | 2007-11-26 | 2013-06-04 | Micro Transponder, Inc. | Implantable transponder systems and methods |
US9089707B2 (en) | 2008-07-02 | 2015-07-28 | The Board Of Regents, The University Of Texas System | Systems, methods and devices for paired plasticity |
US8147549B2 (en) * | 2008-11-24 | 2012-04-03 | Warsaw Orthopedic, Inc. | Orthopedic implant with sensor communications antenna and associated diagnostics measuring, monitoring, and response system |
US8527068B2 (en) | 2009-02-02 | 2013-09-03 | Nanostim, Inc. | Leadless cardiac pacemaker with secondary fixation capability |
US20100198034A1 (en) | 2009-02-03 | 2010-08-05 | Abbott Diabetes Care Inc. | Compact On-Body Physiological Monitoring Devices and Methods Thereof |
WO2010138856A1 (en) | 2009-05-29 | 2010-12-02 | Abbott Diabetes Care Inc. | Medical device antenna systems having external antenna configurations |
EP2467944B1 (en) * | 2009-08-20 | 2015-05-06 | Alfred E. Mann Foundation for Scientific Research | Optimal narrowband interference removal for signals separated in time |
EP2473963A4 (en) | 2009-08-31 | 2014-01-08 | Abbott Diabetes Care Inc | Medical devices and methods |
WO2011111008A1 (en) | 2010-03-11 | 2011-09-15 | Ecole Polytechnique Federale De Lausanne (Epfl) | Telemetry system for sensing applications in lossy media |
US9610450B2 (en) | 2010-07-30 | 2017-04-04 | Medtronics, Inc. | Antenna for an implantable medical device |
US9333365B2 (en) | 2010-07-30 | 2016-05-10 | Medtronic, Inc. | Antenna for an implantable medical device |
US8543205B2 (en) | 2010-10-12 | 2013-09-24 | Nanostim, Inc. | Temperature sensor for a leadless cardiac pacemaker |
US9060692B2 (en) | 2010-10-12 | 2015-06-23 | Pacesetter, Inc. | Temperature sensor for a leadless cardiac pacemaker |
EP2627406A1 (en) | 2010-10-13 | 2013-08-21 | Nanostim, Inc. | Leadless cardiac pacemaker with anti-unscrewing feature |
WO2012082735A1 (en) | 2010-12-13 | 2012-06-21 | Nanostim, Inc. | Delivery catheter systems and methods |
EP2651502B1 (en) | 2010-12-13 | 2016-11-09 | Pacesetter, Inc. | Pacemaker retrieval systems |
US9242102B2 (en) | 2010-12-20 | 2016-01-26 | Pacesetter, Inc. | Leadless pacemaker with radial fixation mechanism |
EP2773416B1 (en) | 2011-11-04 | 2019-04-24 | Pacesetter, Inc. | Leadless cardiac pacemaker with integral battery and redundant welds |
WO2013111137A2 (en) | 2012-01-26 | 2013-08-01 | Rainbow Medical Ltd. | Wireless neurqstimulatqrs |
WO2014022661A1 (en) | 2012-08-01 | 2014-02-06 | Nanostim, Inc. | Biostimulator circuit with flying cell |
CA2890268C (en) * | 2012-10-31 | 2024-02-20 | The Board Of Trustees Of The Leland Stanford Junior University | Wireless implantable sensing devices |
US9861812B2 (en) | 2012-12-06 | 2018-01-09 | Blue Wind Medical Ltd. | Delivery of implantable neurostimulators |
US9398901B2 (en) | 2012-12-07 | 2016-07-26 | Medtronic, Inc. | Minimally invasive implantable neurostimulation system |
US10004913B2 (en) | 2014-03-03 | 2018-06-26 | The Board Of Trustees Of The Leland Stanford Junior University | Methods and apparatus for power conversion and data transmission in implantable sensors, stimulators, and actuators |
WO2015171213A1 (en) | 2014-05-09 | 2015-11-12 | The Board Of Trustees Of The Leland Stanford Junior University | Autofocus wireless power transfer to implantable devices in freely moving animals |
US10674928B2 (en) | 2014-07-17 | 2020-06-09 | Medtronic, Inc. | Leadless pacing system including sensing extension |
US9399140B2 (en) | 2014-07-25 | 2016-07-26 | Medtronic, Inc. | Atrial contraction detection by a ventricular leadless pacing device for atrio-synchronous ventricular pacing |
US9492669B2 (en) | 2014-11-11 | 2016-11-15 | Medtronic, Inc. | Mode switching by a ventricular leadless pacing device |
US9492668B2 (en) | 2014-11-11 | 2016-11-15 | Medtronic, Inc. | Mode switching by a ventricular leadless pacing device |
US9724519B2 (en) | 2014-11-11 | 2017-08-08 | Medtronic, Inc. | Ventricular leadless pacing device mode switching |
US9623234B2 (en) | 2014-11-11 | 2017-04-18 | Medtronic, Inc. | Leadless pacing device implantation |
US9289612B1 (en) | 2014-12-11 | 2016-03-22 | Medtronic Inc. | Coordination of ventricular pacing in a leadless pacing system |
US10105540B2 (en) | 2015-11-09 | 2018-10-23 | Bluewind Medical Ltd. | Optimization of application of current |
WO2017102778A1 (en) | 2015-12-17 | 2017-06-22 | Sorin Crm Sas | Communication amplification device comprising retention elements for an implantable capsule |
WO2018009569A1 (en) | 2016-07-06 | 2018-01-11 | Cardiac Pacemakers, Inc. | Method and system for determining an atrial contraction timing fiducial in a leadless cardiac pacemaker system |
US10124178B2 (en) | 2016-11-23 | 2018-11-13 | Bluewind Medical Ltd. | Implant and delivery tool therefor |
US20180353764A1 (en) | 2017-06-13 | 2018-12-13 | Bluewind Medical Ltd. | Antenna configuration |
US11331500B1 (en) * | 2017-11-20 | 2022-05-17 | Stimwave Technologies Incorporated | Systems and methods to locate an implantable stimulator device inside a subject |
US11400299B1 (en) | 2021-09-14 | 2022-08-02 | Rainbow Medical Ltd. | Flexible antenna for stimulator |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3713162A (en) * | 1970-12-18 | 1973-01-23 | Ball Brothers Res Corp | Single slot cavity antenna assembly |
US4524774A (en) | 1981-07-30 | 1985-06-25 | Deutsche Nemectron Gmbh | Apparatus and method for the stimulation of a human muscle |
US5406297A (en) * | 1991-04-09 | 1995-04-11 | Comtec Industries | Inventory management system |
US6163305A (en) * | 1998-05-27 | 2000-12-19 | Aisin Seiki Kabushiki Kaisha | Loop antenna device |
US6218995B1 (en) * | 1997-06-13 | 2001-04-17 | Itron, Inc. | Telemetry antenna system |
US6218994B1 (en) * | 1993-10-04 | 2001-04-17 | The United States Of America As Represented By The Secretary Of The Navy | Small antennas for communication over sea ice |
US6229494B1 (en) * | 2000-02-18 | 2001-05-08 | Bae Systems Advanced Systems | Radiation synthesizer systems and methods |
Family Cites Families (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US616A (en) * | 1838-02-24 | Artificial horizon foe | ||
US1125A (en) * | 1839-04-18 | Grist-mill | ||
US4814776A (en) * | 1987-09-10 | 1989-03-21 | Motorola, Inc. | Optimally grounded small loop antenna |
JPH01241927A (en) * | 1988-03-24 | 1989-09-26 | Kokusai Electric Co Ltd | Receiver for radio calling |
US5312439A (en) * | 1991-12-12 | 1994-05-17 | Loeb Gerald E | Implantable device having an electrolytic storage electrode |
US5193539A (en) | 1991-12-18 | 1993-03-16 | Alfred E. Mann Foundation For Scientific Research | Implantable microstimulator |
US5193540A (en) * | 1991-12-18 | 1993-03-16 | Alfred E. Mann Foundation For Scientific Research | Structure and method of manufacture of an implantable microstimulator |
US5312367A (en) * | 1993-05-20 | 1994-05-17 | Nathan Rasa N | Needle cover assembly for syringes |
US5626630A (en) * | 1994-10-13 | 1997-05-06 | Ael Industries, Inc. | Medical telemetry system using an implanted passive transponder |
US5659325A (en) * | 1994-12-02 | 1997-08-19 | Harris Corporation | Low impedance loop antenna and drive circuitry |
US6164284A (en) * | 1997-02-26 | 2000-12-26 | Schulman; Joseph H. | System of implantable devices for monitoring and/or affecting body parameters |
US6208894B1 (en) * | 1997-02-26 | 2001-03-27 | Alfred E. Mann Foundation For Scientific Research And Advanced Bionics | System of implantable devices for monitoring and/or affecting body parameters |
JP2001513679A (en) * | 1997-02-26 | 2001-09-04 | アルフレッド イー マン ファウンデーション フォア サイエンティフィック リサーチ | Battery powered patient subcutaneous insertion device |
US5861019A (en) * | 1997-07-25 | 1999-01-19 | Medtronic Inc. | Implantable medical device microstrip telemetry antenna |
GB9816011D0 (en) * | 1998-07-22 | 1998-09-23 | Habib Nagy A | Monitoring treatment using implantable telemetric sensors |
IL141755A0 (en) * | 1998-09-04 | 2002-03-10 | Wolfe Res Pty Ltd | Medical implant system |
US6415184B1 (en) * | 1999-01-06 | 2002-07-02 | Ball Semiconductor, Inc. | Implantable neuro-stimulator with ball implant |
US6266567B1 (en) * | 1999-06-01 | 2001-07-24 | Ball Semiconductor, Inc. | Implantable epicardial electrode |
US6482154B1 (en) * | 2000-08-02 | 2002-11-19 | Medtronic, Inc | Long range implantable medical device telemetry system with positive patient identification |
-
2001
- 2001-09-28 EP EP01977270A patent/EP1342289B1/en not_active Expired - Lifetime
- 2001-09-28 US US09/967,737 patent/US6804561B2/en not_active Expired - Lifetime
- 2001-09-28 WO PCT/US2001/030515 patent/WO2002031909A1/en active Application Filing
- 2001-09-28 DE DE60142178T patent/DE60142178D1/en not_active Expired - Lifetime
- 2001-09-28 AU AU2001296403A patent/AU2001296403A1/en not_active Abandoned
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3713162A (en) * | 1970-12-18 | 1973-01-23 | Ball Brothers Res Corp | Single slot cavity antenna assembly |
US4524774A (en) | 1981-07-30 | 1985-06-25 | Deutsche Nemectron Gmbh | Apparatus and method for the stimulation of a human muscle |
US5406297A (en) * | 1991-04-09 | 1995-04-11 | Comtec Industries | Inventory management system |
US6218994B1 (en) * | 1993-10-04 | 2001-04-17 | The United States Of America As Represented By The Secretary Of The Navy | Small antennas for communication over sea ice |
US6218995B1 (en) * | 1997-06-13 | 2001-04-17 | Itron, Inc. | Telemetry antenna system |
US6163305A (en) * | 1998-05-27 | 2000-12-19 | Aisin Seiki Kabushiki Kaisha | Loop antenna device |
US6229494B1 (en) * | 2000-02-18 | 2001-05-08 | Bae Systems Advanced Systems | Radiation synthesizer systems and methods |
Non-Patent Citations (1)
Title |
---|
See also references of EP1342289A4 * |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2414408A (en) * | 2004-05-29 | 2005-11-30 | Zarlink Semiconductor Ltd | Implanted pacemaker with antenna formed on or by the device enclosure |
US8170680B2 (en) | 2008-03-04 | 2012-05-01 | Cardiac Pacemakers, Inc. | Implantable multi-length RF antenna |
US8588924B2 (en) | 2008-03-04 | 2013-11-19 | Cardiac Pacemakers, Inc. | Loaded RF antenna for implantable device |
US8972021B2 (en) | 2008-03-04 | 2015-03-03 | Cardiac Pacemakers, Inc. | Detachable helical antenna for implantable medical device |
US9883815B2 (en) | 2015-04-20 | 2018-02-06 | Össur Iceland Ehf | Electromyography with prosthetic or orthotic devices |
US11051957B2 (en) | 2015-04-20 | 2021-07-06 | Össur Iceland Ehf | Electromyography with prosthetic or orthotic devices |
Also Published As
Publication number | Publication date |
---|---|
EP1342289A1 (en) | 2003-09-10 |
DE60142178D1 (en) | 2010-07-01 |
US20020042637A1 (en) | 2002-04-11 |
AU2001296403A1 (en) | 2002-04-22 |
EP1342289B1 (en) | 2010-05-19 |
EP1342289A4 (en) | 2008-10-15 |
US6804561B2 (en) | 2004-10-12 |
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