CA2316843A1 - Piezoelectric transducer - Google Patents

Piezoelectric transducer Download PDF

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Publication number
CA2316843A1
CA2316843A1 CA002316843A CA2316843A CA2316843A1 CA 2316843 A1 CA2316843 A1 CA 2316843A1 CA 002316843 A CA002316843 A CA 002316843A CA 2316843 A CA2316843 A CA 2316843A CA 2316843 A1 CA2316843 A1 CA 2316843A1
Authority
CA
Canada
Prior art keywords
piezoelectric layer
electrodes
transmitter
transducer element
cavity
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002316843A
Other languages
French (fr)
Other versions
CA2316843C (en
Inventor
Eyal Doron
Yariv Porat
Yoseph Tsaliah
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Remon Medical Technologies Ltd Israel
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of CA2316843A1 publication Critical patent/CA2316843A1/en
Application granted granted Critical
Publication of CA2316843C publication Critical patent/CA2316843C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00Measuring for diagnostic purposes; Identification of persons
    • A61B5/41Detecting, measuring or recording for evaluating the immune or lymphatic systems
    • A61B5/413Monitoring transplanted tissue or organ, e.g. for possible rejection reactions after a transplant
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00Measuring for diagnostic purposes; Identification of persons
    • A61B5/0002Remote monitoring of patients using telemetry, e.g. transmission of vital signals via a communication network
    • A61B5/0031Implanted circuitry
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00Measuring for diagnostic purposes; Identification of persons
    • A61B5/05Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves 
    • A61B5/053Measuring electrical impedance or conductance of a portion of the body
    • A61B5/0535Impedance plethysmography
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01FMEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/05Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects
    • G01F1/34Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by measuring pressure or differential pressure
    • G01F1/36Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by measuring pressure or differential pressure the pressure or differential pressure being created by the use of flow constriction
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01FMEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/72Devices for measuring pulsing fluid flows
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R17/00Piezoelectric transducers; Electrostrictive transducers
    • HELECTRICITY
    • H10SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10NELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N30/00Piezoelectric or electrostrictive devices
    • H10N30/30Piezoelectric or electrostrictive devices with mechanical input and electrical output, e.g. functioning as generators or sensors
    • H10N30/302Sensors
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B2562/00Details of sensors; Constructional details of sensor housings or probes; Accessories for sensors
    • A61B2562/02Details of sensors specially adapted for in-vivo measurements
    • A61B2562/028Microscale sensors, e.g. electromechanical sensors [MEMS]
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61NELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N1/00Electrotherapy; Circuits therefor
    • A61N1/18Applying electric currents by contact electrodes
    • A61N1/32Applying electric currents by contact electrodes alternating or intermittent currents
    • A61N1/36Applying electric currents by contact electrodes alternating or intermittent currents for stimulation
    • A61N1/372Arrangements in connection with the implantation of stimulators
    • A61N1/37211Means for communicating with stimulators
    • A61N1/37252Details of algorithms or data aspects of communication system, e.g. handshaking, transmitting specific data or segmenting data
    • A61N1/37288Communication to several implantable medical devices within one patient
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S310/00Electrical generator or motor structure
    • Y10S310/80Piezoelectric polymers, e.g. PVDF

Abstract

A miniature piezoelectric transducer element is provided, comprising: (a) a cell element having a cavity (3); (b) a flexible piezoelectric layer (2) attached to the cell member, the piezoelectric element layer (2) having an external surface and at internal surface, the piezoelectric layer featuring such dimensions so as to enable fluctuations thereof at its resonance frequency upon impinging of an external acoustic wave; and (c) a first electrode (8) attached to the external surface and a second electrode (6) attached to the internal surface of the piezoelectric layer. At least one of the electrodes may be specifically shaped so as to provide a maximal electrical output wherein the electrical output may be current, voltage or power. A preferred shape of the electrodes includes two cores interconnected by a connecting member. The transducer element may function as a transmitter. When used as a transmitter, the electrodes are electrically connected to an electrical circuit including a switching element for modulating the reflected acoustic wave by controllably changing the mechanical impedance of the piezoelectric layer according in the frequency of an electrical message signal arriving from an electronic member, such as a sensor. Third and fourth electrodes may be attached to the piezoelectric layer and the electrical circuit, such that the switching element alternately connects the electrodes in parallel and anti-parallel electrical connections so as to controllably change the mechanical impedance of the piezoelectric layer.

Claims (45)

1. A transducer element, comprising:
(a) a cell member having a cavity;
(b) a substantially flexible piezoelectric layer being peripherally attached to said cell member so as to isolate said cavity from its surroundings, and such that a central portion of said flexible piezoelectric layer being non-supported and freely floats over said cavity, said piezoelectric layer having an external surface and an internal surface, said piezoelectric layer featuring such dimensions so as to enable fluctuations thereof in-and-out of said cavity at its resonance frequency upon impinging of an external acoustic field;
and (c) a first electrode attached to said external surface and a second electrode attached to said internal surface.
2. The transducer element of claim 1, wherein said cavity is etched into a substrate.
3. The transducer element of claim 2, wherein said substrate includes an electrically insulating layer and an electrically conducting layer.
4. The transducer element of claim 3, wherein said first electrode is integrally made with a substantially thin electrically conducting layer disposed on said substrate.
5. The transducer of claim 4, wherein said substantially thin electrically conducting layer is connected to said substrate by means of a sealing connection.
6. The transducer element of claim 3, wherein said electrically insulating layer is made of silicon.
7. The transducer element of claim 3, wherein said electrically insulating layer is made of a polymeric material.
8. The transducer element of claim 5, wherein said sealing connection is made of indium.
9. The transducer element of claim 1, wherein said piezoelectric layer is made of PVDF.
10. The transducer element of claim 1. wherein said cavity is circular in cross section.
11. The transducer element of claim 1, wherein said cavity is hexagonal in cross section.
12. The transducer element of claim 2, wherein said substrate includes a plurality of cell members.
13. The transducer element of claim 1, wherein at least one of said first and second electrodes is specifically shaped so as to provide a maximal electrical output.
14. The transducer element of claim 13, wherein said electrical output is current.
15. The transducer element of claim 13, wherein said electrical output is voltage.
16. The transducer element of claim 13, wherein said electrical output is power.
17. The transducer element of claim 13, wherein at least one of said electrodes features first and second electrode portions interconnected by a connecting member.
18. The transducer element of claim 1, wherein said cavity includes gas.
19. The transducer element of claim 18, wherein said gas is of substantially low pressure.
20. The transducer element of claim 19, wherein said transducer element is used as a transmitter.
21. The transducer element of claim 19, further including a switching element electrically connected thereto so as to controllably change the mechanical impedance of said piezoelectric layer.
22. A transmitter element, comprising:
(a) a cell element having a cavity;
(b) a substantially flexible piezoelectric layer being peripherally attached to said cell member so as to isolate said cavity from its surroundings, and such that a central portion of said flexible piezoelectric layer being non-supported and freely floats over said cavity, said piezoelectric layer having an external surface and an internal surface, said piezoelectric layer featuring such dimensions so as to enable fluctuations thereof in-and-out of said cavity at its resonance frequency upon impinging of an external acoustic field;
and (c) a first electrode attached to said external surface and a second electrode attached to said internal surface, said electrodes being electrically connected to an electrical circuit including a switching element for controllably changing the mechanical impedance of said piezoelectric layer.
23. The transmitter element of claim 22, wherein the switching frequency of said switching element equals the frequency of an electrical message signal arriving from an electronic member.
24. The transmitter element of claim 23, wherein said electronic member is a sensor.
25. The transmitter element of claim 22, wherein said switching element is for modulating a reflected acoustic wave according to a message signal arriving from an electronic component.
26. The transmitter element of claim 22, further including a third electrode attached so said external surface and a fourth electrode attached to said internal surface.
27. The transmitter element of claim 26, wherein said switching element alternately connects said electrodes in parallel and anti-parallel connections, thereby controllably changing the mechanical impedance of said piezoelectric layer.
28. The transmitter element of claim 26, wherein said electrodes are electrically interconnected by means of a substantially built-in anti-parallel connection.
29. The transmitter element of claim 26, wherein said electrodes are electrically interconnected by means of a substantially built-in parallel connection.
30. The transmitter element of claim 26, wherein said switching element is an on/off switch.
31. The transmitter element of claim 26, wherein said piezoelectric layer includes first and second portions having opposite polarities.
32. The transmitter element of claim 22, wherein said transmitter element includes two cell members.
33. The transmitter element of claim 32, wherein said two cell members are electrically interconnected by means of a substantially built-in parallel connection.
34. The transmitter element of claim 32, wherein said two cell members are electrically interconnected by means of a substantially built-in anti-parallel connection.
35. The transmitter element of claim 32, wherein said switching element alternately connects said cell members in parallel and anti-parallel connections.
36. The transmitter element of claim 32, wherein said cell members have piezoelectric layers of opposite polarities.
37. The transmitter element of claim 22, wherein said cavity is covered by a two-ply piezoelectric layer including an upper layer disposed on a lower layer.
38. The transmitter element of claim 37, wherein said upper and lower layers feature opposite polarities.
39. The transmitter element of claim 37, further including an insulating layer disposed between said upper and lower layers.
40. A method of transmitting an acoustic information, comprising:
(a) providing a substantially flexible piezoelectric layer having first and second electrodes attached thereto, said piezoelectric layer being attached to a cell member, said electrodes being electrical connected to an electrical circuit including a switching element;
(b) providing an acoustic wave for impinging on said piezoelectric layer, said acoustic wave having a reflected portion; and (c) modulating said reflected portion of said acoustic wave by controlling the mechanical impedance of said piezoelectric layer, said controlling being effected by switching said switching element at a frequency which equals the frequency of a message signal arriving from an electronic component.
41. The method of claim 40, wherein said electronic component is a sensor.
42. The method of claim 40, further comprising:
(a) providing third and fourth electrodes attached to said piezoelectric layer, said third and fourth electrodes being electrically connected to said electrical circuit; and (b) changing the electrical connections between said electrodes by means of said switching element so as to change the mechanical impedance of said piezoelectric layer.
43. The method of claim 40, wherein said first and second electrodes are attached to a first cell member and said third and fourth electrodes are attached to a second cell member.
44. The method of claim 40, wherein said electronic component is a resistor.
45. The transducer element of claim 1, wherein said transducer is used as a sensor.
CA2316843A 1997-12-30 1998-12-28 Piezoelectric transducer Expired - Fee Related CA2316843C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US09/000,553 US6140740A (en) 1997-12-30 1997-12-30 Piezoelectric transducer
US09/000,553 1997-12-30
PCT/US1998/027669 WO1999034453A1 (en) 1997-12-30 1998-12-28 Piezoelectric transducer

Publications (2)

Publication Number Publication Date
CA2316843A1 true CA2316843A1 (en) 1999-07-08
CA2316843C CA2316843C (en) 2010-09-21

Family

ID=21692008

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2316843A Expired - Fee Related CA2316843C (en) 1997-12-30 1998-12-28 Piezoelectric transducer

Country Status (8)

Country Link
US (3) US6140740A (en)
EP (1) EP1042822B1 (en)
JP (1) JP4288388B2 (en)
AT (1) ATE469441T1 (en)
AU (1) AU2450099A (en)
CA (1) CA2316843C (en)
DE (1) DE69841689D1 (en)
WO (1) WO1999034453A1 (en)

Families Citing this family (278)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7070590B1 (en) 1996-07-02 2006-07-04 Massachusetts Institute Of Technology Microchip drug delivery devices
US5899847A (en) 1996-08-07 1999-05-04 St. Croix Medical, Inc. Implantable middle-ear hearing assist system using piezoelectric transducer film
US6809462B2 (en) * 2000-04-05 2004-10-26 Sri International Electroactive polymer sensors
US20030036746A1 (en) 2001-08-16 2003-02-20 Avi Penner Devices for intrabody delivery of molecules and systems and methods utilizing same
US6363940B1 (en) * 1998-05-14 2002-04-02 Calypso Medical Technologies, Inc. System and method for bracketing and removing tissue
EP1341465B1 (en) 1998-05-14 2010-01-27 Calypso Medical, Inc System for locating and defining a target location within a human body
US6364825B1 (en) 1998-09-24 2002-04-02 St. Croix Medical, Inc. Method and apparatus for improving signal quality in implantable hearing systems
US7549960B2 (en) * 1999-03-11 2009-06-23 Biosense, Inc. Implantable and insertable passive tags
US7590441B2 (en) 1999-03-11 2009-09-15 Biosense, Inc. Invasive medical device with position sensing and display
US7174201B2 (en) * 1999-03-11 2007-02-06 Biosense, Inc. Position sensing system with integral location pad and position display
US7558616B2 (en) * 1999-03-11 2009-07-07 Biosense, Inc. Guidance of invasive medical procedures using implantable tags
US7575550B1 (en) 1999-03-11 2009-08-18 Biosense, Inc. Position sensing based on ultrasound emission
JP3531522B2 (en) * 1999-04-19 2004-05-31 株式会社村田製作所 Piezoelectric resonator
JP3324593B2 (en) * 1999-10-28 2002-09-17 株式会社村田製作所 Ultrasonic vibration device
US6720708B2 (en) * 2000-01-07 2004-04-13 Lewis Athanas Mechanical-to-acoustical transformer and multi-media flat film speaker
US6911764B2 (en) * 2000-02-09 2005-06-28 Sri International Energy efficient electroactive polymers and electroactive polymer devices
WO2002030264A2 (en) * 2000-10-10 2002-04-18 Microchips, Inc. Microchip reservoir devices using wireless transmission of power and data
WO2002030401A2 (en) 2000-10-11 2002-04-18 Microchips, Inc. Microchip reservoir devices and facilitated corrosion of electrodes
US7198603B2 (en) * 2003-04-14 2007-04-03 Remon Medical Technologies, Inc. Apparatus and methods using acoustic telemetry for intrabody communications
US7283874B2 (en) 2000-10-16 2007-10-16 Remon Medical Technologies Ltd. Acoustically powered implantable stimulating device
US7273457B2 (en) 2000-10-16 2007-09-25 Remon Medical Technologies, Ltd. Barometric pressure correction based on remote sources of information
US7024248B2 (en) * 2000-10-16 2006-04-04 Remon Medical Technologies Ltd Systems and methods for communicating with implantable devices
US6628989B1 (en) * 2000-10-16 2003-09-30 Remon Medical Technologies, Ltd. Acoustic switch and apparatus and methods for using acoustic switches within a body
US6764446B2 (en) * 2000-10-16 2004-07-20 Remon Medical Technologies Ltd Implantable pressure sensors and methods for making and using them
US8372139B2 (en) 2001-02-14 2013-02-12 Advanced Bio Prosthetic Surfaces, Ltd. In vivo sensor and method of making same
US6638231B2 (en) 2000-12-18 2003-10-28 Biosense, Inc. Implantable telemetric medical sensor and method
US6658300B2 (en) 2000-12-18 2003-12-02 Biosense, Inc. Telemetric reader/charger device for medical sensor
US6636769B2 (en) 2000-12-18 2003-10-21 Biosense, Inc. Telemetric medical system and method
US6652464B2 (en) 2000-12-18 2003-11-25 Biosense, Inc. Intracardiac pressure monitoring method
US6746404B2 (en) 2000-12-18 2004-06-08 Biosense, Inc. Method for anchoring a medical device between tissue
US6783499B2 (en) 2000-12-18 2004-08-31 Biosense, Inc. Anchoring mechanism for implantable telemetric medical sensor
CA2432438C (en) 2001-01-09 2011-04-26 Microchips, Inc. Flexible microchip devices for ophthalmic and other applications
US7106310B2 (en) * 2001-01-18 2006-09-12 Texzec, Inc. Acoustic wave touch actuated switch
EP2335660B1 (en) 2001-01-18 2018-03-28 The Regents of The University of California Minimally invasive glaucoma surgical instrument
WO2002099457A1 (en) 2001-05-31 2002-12-12 Massachusetts Inst Technology Microchip devices with improved reservoir opening
US6890303B2 (en) * 2001-05-31 2005-05-10 Matthew Joseph Fitz Implantable device for monitoring aneurysm sac parameters
US7493162B2 (en) 2001-06-15 2009-02-17 Cardiac Pacemakers, Inc. Pulmonary vein stent for treating atrial fibrillation
US7209783B2 (en) 2001-06-15 2007-04-24 Cardiac Pacemakers, Inc. Ablation stent for treating atrial fibrillation
US7727221B2 (en) * 2001-06-27 2010-06-01 Cardiac Pacemakers Inc. Method and device for electrochemical formation of therapeutic species in vivo
WO2003032957A2 (en) 2001-06-28 2003-04-24 Microchips, Inc. Methods for hermetically sealing microchip reservoir devices
US20030222540A1 (en) * 2001-08-30 2003-12-04 Chih-Kung Lee Piezoelectric transducer apparatus having independent gain and phase characteristics functions
US7340303B2 (en) 2001-09-25 2008-03-04 Cardiac Pacemakers, Inc. Evoked response sensing for ischemia detection
US7557353B2 (en) * 2001-11-30 2009-07-07 Sicel Technologies, Inc. Single-use external dosimeters for use in radiation therapies
US6943484B2 (en) * 2001-12-06 2005-09-13 University Of Pittsburgh Tunable piezoelectric micro-mechanical resonator
US6771006B2 (en) * 2002-01-18 2004-08-03 Pegasus Technologies Ltd. Cylindrical ultrasound transceivers
US7699059B2 (en) * 2002-01-22 2010-04-20 Cardiomems, Inc. Implantable wireless sensor
US6855115B2 (en) * 2002-01-22 2005-02-15 Cardiomems, Inc. Implantable wireless sensor for pressure measurement within the heart
US7061381B2 (en) * 2002-04-05 2006-06-13 Beezerbug Incorporated Ultrasonic transmitter and receiver systems and products using the same
US7261733B1 (en) * 2002-06-07 2007-08-28 Endovascular Technologies, Inc. Endovascular graft with sensors design and attachment methods
US7025778B2 (en) * 2002-06-07 2006-04-11 Endovascular Technologies, Inc. Endovascular graft with pressure, temperature, flow and voltage sensors
US7399313B2 (en) * 2002-06-07 2008-07-15 Brown Peter S Endovascular graft with separable sensors
US7060075B2 (en) * 2002-07-18 2006-06-13 Biosense, Inc. Distal targeting of locking screws in intramedullary nails
US7147604B1 (en) 2002-08-07 2006-12-12 Cardiomems, Inc. High Q factor sensor
CN100594892C (en) * 2002-08-16 2010-03-24 微芯片公司 Controlled release device and method using electrothermal ablation
US7534241B2 (en) * 2002-09-23 2009-05-19 Microchips, Inc. Micro-reservoir osmotic release systems and microtube array device
US7072711B2 (en) 2002-11-12 2006-07-04 Cardiac Pacemakers, Inc. Implantable device for delivering cardiac drug therapy
US7289839B2 (en) 2002-12-30 2007-10-30 Calypso Medical Technologies, Inc. Implantable marker with a leadless signal transmitter compatible for use in magnetic resonance devices
US6889833B2 (en) * 2002-12-30 2005-05-10 Calypso Medical Technologies, Inc. Packaged systems for implanting markers in a patient and methods for manufacturing and using such systems
US8123774B2 (en) * 2003-03-20 2012-02-28 Boston Scientific Scimed, Inc. Piezoelectric vascular implant release device
US20050055014A1 (en) * 2003-08-04 2005-03-10 Coppeta Jonathan R. Methods for accelerated release of material from a reservoir device
US7320675B2 (en) 2003-08-21 2008-01-22 Cardiac Pacemakers, Inc. Method and apparatus for modulating cellular metabolism during post-ischemia or heart failure
US8026729B2 (en) 2003-09-16 2011-09-27 Cardiomems, Inc. System and apparatus for in-vivo assessment of relative position of an implant
US7245117B1 (en) 2004-11-01 2007-07-17 Cardiomems, Inc. Communicating with implanted wireless sensor
US20050187482A1 (en) 2003-09-16 2005-08-25 O'brien David Implantable wireless sensor
US7559894B2 (en) * 2003-09-18 2009-07-14 New Paradigm Concepts, LLC Multiparameter whole blood monitor and method
US20060287590A1 (en) * 2003-09-18 2006-12-21 Mceowen Edwin L Noninvasive vital sign measurement device
US20050065592A1 (en) * 2003-09-23 2005-03-24 Asher Holzer System and method of aneurism monitoring and treatment
US20050165317A1 (en) * 2003-11-04 2005-07-28 Turner Nicholas M. Medical devices
US8196589B2 (en) 2003-12-24 2012-06-12 Calypso Medical Technologies, Inc. Implantable marker with wireless signal transmitter
US7572228B2 (en) 2004-01-13 2009-08-11 Remon Medical Technologies Ltd Devices for fixing a sensor in a lumen
US7471986B2 (en) * 2004-02-20 2008-12-30 Cardiac Pacemakers, Inc. System and method for transmitting energy to and establishing a communications network with one or more implanted devices
US7840263B2 (en) 2004-02-27 2010-11-23 Cardiac Pacemakers, Inc. Method and apparatus for device controlled gene expression
EP1761104A4 (en) * 2004-06-03 2016-12-28 Olympus Corp Electrostatic capacity type ultrasonic vibrator, manufacturing method thereof, and electrostatic capacity type ultrasonic probe
US7764995B2 (en) 2004-06-07 2010-07-27 Cardiac Pacemakers, Inc. Method and apparatus to modulate cellular regeneration post myocardial infarct
US7489967B2 (en) * 2004-07-09 2009-02-10 Cardiac Pacemakers, Inc. Method and apparatus of acoustic communication for implantable medical device
US7828711B2 (en) 2004-08-16 2010-11-09 Cardiac Pacemakers, Inc. Method and apparatus for modulating cellular growth and regeneration using ventricular assist device
US7567841B2 (en) 2004-08-20 2009-07-28 Cardiac Pacemakers, Inc. Method and apparatus for delivering combined electrical and drug therapies
US20060064134A1 (en) * 2004-09-17 2006-03-23 Cardiac Pacemakers, Inc. Systems and methods for deriving relative physiologic measurements
US20060064142A1 (en) * 2004-09-17 2006-03-23 Cardiac Pacemakers, Inc. Systems and methods for deriving relative physiologic measurements using an implanted sensor device
US20060063522A1 (en) * 2004-09-21 2006-03-23 Mcfarland Norman R Self-powering automated building control components
US7918800B1 (en) 2004-10-08 2011-04-05 Endovascular Technologies, Inc. Aneurysm sensing devices and delivery systems
US7059196B1 (en) * 2004-11-22 2006-06-13 Honeywell International Inc. Disposable wireless pressure sensor
ATE484232T1 (en) 2004-11-24 2010-10-15 Remon Medical Technologies Ltd IMPLANTABLE MEDICAL DEVICE WITH INTEGRATED ACOUSTIC TRANSDUCER
US7813808B1 (en) 2004-11-24 2010-10-12 Remon Medical Technologies Ltd Implanted sensor system with optimized operational and sensing parameters
US7522962B1 (en) 2004-12-03 2009-04-21 Remon Medical Technologies, Ltd Implantable medical device with integrated acoustic transducer
US8048141B2 (en) * 2004-12-07 2011-11-01 Boston Scientific Scimed, Inc. Medical device that signals lumen loss
FR2878733B1 (en) * 2004-12-08 2007-03-30 Francis Bartolome MEDICAL DEVICE IMPLANTED REMOTE CONTROL
US7981065B2 (en) 2004-12-20 2011-07-19 Cardiac Pacemakers, Inc. Lead electrode incorporating extracellular matrix
US8060219B2 (en) 2004-12-20 2011-11-15 Cardiac Pacemakers, Inc. Epicardial patch including isolated extracellular matrix with pacing electrodes
US10390714B2 (en) 2005-01-12 2019-08-27 Remon Medical Technologies, Ltd. Devices for fixing a sensor in a lumen
US7775966B2 (en) 2005-02-24 2010-08-17 Ethicon Endo-Surgery, Inc. Non-invasive pressure measurement in a fluid adjustable restrictive device
US20080076975A1 (en) * 2005-01-25 2008-03-27 Microchips, Inc. Method and implantable device with reservoir array for pre-clinical in vivo testing
WO2006081279A2 (en) 2005-01-25 2006-08-03 Microchips, Inc. Control of drug release by transient modification of local microenvironments
US7647836B2 (en) 2005-02-10 2010-01-19 Cardiomems, Inc. Hermetic chamber with electrical feedthroughs
US20060174712A1 (en) 2005-02-10 2006-08-10 Cardiomems, Inc. Hermetic chamber with electrical feedthroughs
US8016744B2 (en) 2005-02-24 2011-09-13 Ethicon Endo-Surgery, Inc. External pressure-based gastric band adjustment system and method
US7927270B2 (en) 2005-02-24 2011-04-19 Ethicon Endo-Surgery, Inc. External mechanical pressure sensor for gastric band pressure measurements
US7658196B2 (en) 2005-02-24 2010-02-09 Ethicon Endo-Surgery, Inc. System and method for determining implanted device orientation
US8066629B2 (en) 2005-02-24 2011-11-29 Ethicon Endo-Surgery, Inc. Apparatus for adjustment and sensing of gastric band pressure
US7775215B2 (en) 2005-02-24 2010-08-17 Ethicon Endo-Surgery, Inc. System and method for determining implanted device positioning and obtaining pressure data
US7699770B2 (en) 2005-02-24 2010-04-20 Ethicon Endo-Surgery, Inc. Device for non-invasive measurement of fluid pressure in an adjustable restriction device
US8118749B2 (en) * 2005-03-03 2012-02-21 Cardiomems, Inc. Apparatus and method for sensor deployment and fixation
US8021307B2 (en) 2005-03-03 2011-09-20 Cardiomems, Inc. Apparatus and method for sensor deployment and fixation
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
JP2008546315A (en) * 2005-05-31 2008-12-18 ユニゾン・プロダクツ・インコーポレーテッド Optimized piezoelectric design for mechanical-acoustic transducers
CA2613241A1 (en) 2005-06-21 2007-01-04 Cardiomems, Inc. Method of manufacturing implantable wireless sensor for in vivo pressure measurement
US7621036B2 (en) 2005-06-21 2009-11-24 Cardiomems, Inc. Method of manufacturing implantable wireless sensor for in vivo pressure measurement
JP2007028205A (en) 2005-07-15 2007-02-01 Sony Corp Electroacoustic transducer and method of forming diaphragm thereof
US7570998B2 (en) 2005-08-26 2009-08-04 Cardiac Pacemakers, Inc. Acoustic communication transducer in implantable medical device header
US7615012B2 (en) 2005-08-26 2009-11-10 Cardiac Pacemakers, Inc. Broadband acoustic sensor for an implantable medical device
US7742815B2 (en) 2005-09-09 2010-06-22 Cardiac Pacemakers, Inc. Using implanted sensors for feedback control of implanted medical devices
US8649875B2 (en) 2005-09-10 2014-02-11 Artann Laboratories Inc. Systems for remote generation of electrical signal in tissue based on time-reversal acoustics
US20070073334A1 (en) * 2005-09-29 2007-03-29 Kamal Ramzipoor Combined electrolytic and mechanical separation background
US7616990B2 (en) 2005-10-24 2009-11-10 Cardiac Pacemakers, Inc. Implantable and rechargeable neural stimulator
US20070142727A1 (en) * 2005-12-15 2007-06-21 Cardiac Pacemakers, Inc. System and method for analyzing cardiovascular pressure measurements made within a human body
US8060214B2 (en) 2006-01-05 2011-11-15 Cardiac Pacemakers, Inc. Implantable medical device with inductive coil configurable for mechanical fixation
US8840660B2 (en) 2006-01-05 2014-09-23 Boston Scientific Scimed, Inc. Bioerodible endoprostheses and methods of making the same
US8078278B2 (en) 2006-01-10 2011-12-13 Remon Medical Technologies Ltd. Body attachable unit in wireless communication with implantable devices
US8089029B2 (en) 2006-02-01 2012-01-03 Boston Scientific Scimed, Inc. Bioabsorbable metal medical device and method of manufacture
US20070208390A1 (en) * 2006-03-01 2007-09-06 Von Arx Jeffrey A Implantable wireless sound sensor
WO2007106490A2 (en) 2006-03-14 2007-09-20 Cardiomems, Inc. Communicating with an implanted wireless sensor
US8870742B2 (en) 2006-04-06 2014-10-28 Ethicon Endo-Surgery, Inc. GUI for an implantable restriction device and a data logger
US8152710B2 (en) 2006-04-06 2012-04-10 Ethicon Endo-Surgery, Inc. Physiological parameter analysis for an implantable restriction device and a data logger
US8048150B2 (en) 2006-04-12 2011-11-01 Boston Scientific Scimed, Inc. Endoprosthesis having a fiber meshwork disposed thereon
US7744542B2 (en) * 2006-04-20 2010-06-29 Cardiac Pacemakers, Inc. Implanted air passage sensors
US7650185B2 (en) 2006-04-25 2010-01-19 Cardiac Pacemakers, Inc. System and method for walking an implantable medical device from a sleep state
US7955268B2 (en) 2006-07-21 2011-06-07 Cardiac Pacemakers, Inc. Multiple sensor deployment
US7912548B2 (en) 2006-07-21 2011-03-22 Cardiac Pacemakers, Inc. Resonant structures for implantable devices
US7908334B2 (en) * 2006-07-21 2011-03-15 Cardiac Pacemakers, Inc. System and method for addressing implantable devices
EP2043740A2 (en) 2006-07-21 2009-04-08 Cardiac Pacemakers, Inc. Ultrasonic transducer for a metallic cavity implanted medical device
CA2659761A1 (en) 2006-08-02 2008-02-07 Boston Scientific Scimed, Inc. Endoprosthesis with three-dimensional disintegration control
US9867530B2 (en) 2006-08-14 2018-01-16 Volcano Corporation Telescopic side port catheter device with imaging system and method for accessing side branch occlusions
US7643879B2 (en) * 2006-08-24 2010-01-05 Cardiac Pacemakers, Inc. Integrated cardiac rhythm management system with heart valve
EP2063780B1 (en) * 2006-09-06 2018-04-11 Innurvation, Inc. Imaging and locating systems and methods for a swallowable sensor device
EP2063766B1 (en) * 2006-09-06 2017-01-18 Innurvation, Inc. Ingestible low power sensor device and system for communicating with same
US8512241B2 (en) * 2006-09-06 2013-08-20 Innurvation, Inc. Methods and systems for acoustic data transmission
US8808726B2 (en) 2006-09-15 2014-08-19 Boston Scientific Scimed. Inc. Bioerodible endoprostheses and methods of making the same
CA2663271A1 (en) 2006-09-15 2008-03-20 Boston Scientific Limited Bioerodible endoprostheses and methods of making the same
EP2959925B1 (en) 2006-09-15 2018-08-29 Boston Scientific Limited Medical devices and methods of making the same
US8676349B2 (en) 2006-09-15 2014-03-18 Cardiac Pacemakers, Inc. Mechanism for releasably engaging an implantable medical device for implantation
ES2368125T3 (en) 2006-09-15 2011-11-14 Boston Scientific Scimed, Inc. BIOEROSIONABLE ENDOPROOTHESIS WITH BIOESTABLE INORGANIC LAYERS.
US8057399B2 (en) 2006-09-15 2011-11-15 Cardiac Pacemakers, Inc. Anchor for an implantable sensor
WO2008036548A2 (en) 2006-09-18 2008-03-27 Boston Scientific Limited Endoprostheses
US20080077440A1 (en) * 2006-09-26 2008-03-27 Remon Medical Technologies, Ltd Drug dispenser responsive to physiological parameters
US8092384B2 (en) * 2006-09-28 2012-01-10 Tyco Healthcare Group Lp System and method for continuous detection of an analyte in bloodstream
EP2277563B1 (en) 2006-12-28 2014-06-25 Boston Scientific Limited Bioerodible endoprostheses and method of making the same
EP2139556B1 (en) 2007-03-26 2014-04-23 Remon Medical Technologies Ltd. Biased acoustic switch for implantable medical device
US8204599B2 (en) 2007-05-02 2012-06-19 Cardiac Pacemakers, Inc. System for anchoring an implantable sensor in a vessel
CA2685251A1 (en) * 2007-05-04 2008-11-13 Arizona Board Of Regents For And On Behalf Of Arizona State University Systems and methods for wireless transmission of biopotentials
US8825161B1 (en) 2007-05-17 2014-09-02 Cardiac Pacemakers, Inc. Acoustic transducer for an implantable medical device
EP2157907B1 (en) * 2007-06-07 2013-03-27 MicroCHIPS, Inc. Electrochemical biosensors and arrays
AU2008266678B2 (en) 2007-06-14 2013-06-20 Cardiac Pacemakers, Inc. Multi-element acoustic recharging system
EP2155051A1 (en) * 2007-06-14 2010-02-24 Cardiac Pacemakers, Inc. Intracorporeal pressure measurement devices and methods
US8082041B1 (en) 2007-06-15 2011-12-20 Piezo Energy Technologies, LLC Bio-implantable ultrasound energy capture and storage assembly including transmitter and receiver cooling
EP2174360A4 (en) 2007-06-29 2013-12-11 Artificial Muscle Inc Electroactive polymer transducers for sensory feedback applications
US10219780B2 (en) * 2007-07-12 2019-03-05 Volcano Corporation OCT-IVUS catheter for concurrent luminal imaging
US9596993B2 (en) 2007-07-12 2017-03-21 Volcano Corporation Automatic calibration systems and methods of use
WO2009009799A1 (en) 2007-07-12 2009-01-15 Volcano Corporation Catheter for in vivo imaging
US8052745B2 (en) 2007-09-13 2011-11-08 Boston Scientific Scimed, Inc. Endoprosthesis
US20090088618A1 (en) 2007-10-01 2009-04-02 Arneson Michael R System and Method for Manufacturing a Swallowable Sensor Device
US9197470B2 (en) * 2007-10-05 2015-11-24 Innurvation, Inc. Data transmission via multi-path channels using orthogonal multi-frequency signals with differential phase shift keying modulation
WO2009067669A1 (en) * 2007-11-21 2009-05-28 Emo Labs, Inc.. Wireless loudspeaker
US8187163B2 (en) 2007-12-10 2012-05-29 Ethicon Endo-Surgery, Inc. Methods for implanting a gastric restriction device
US8100870B2 (en) 2007-12-14 2012-01-24 Ethicon Endo-Surgery, Inc. Adjustable height gastric restriction devices and methods
US8377079B2 (en) 2007-12-27 2013-02-19 Ethicon Endo-Surgery, Inc. Constant force mechanisms for regulating restriction devices
US8142452B2 (en) 2007-12-27 2012-03-27 Ethicon Endo-Surgery, Inc. Controlling pressure in adjustable restriction devices
US8041431B2 (en) * 2008-01-07 2011-10-18 Cardiac Pacemakers, Inc. System and method for in situ trimming of oscillators in a pair of implantable medical devices
JP4618302B2 (en) * 2008-01-17 2011-01-26 株式会社富士通ゼネラル Air conditioner
US8337389B2 (en) 2008-01-28 2012-12-25 Ethicon Endo-Surgery, Inc. Methods and devices for diagnosing performance of a gastric restriction system
US8591395B2 (en) 2008-01-28 2013-11-26 Ethicon Endo-Surgery, Inc. Gastric restriction device data handling devices and methods
US8192350B2 (en) 2008-01-28 2012-06-05 Ethicon Endo-Surgery, Inc. Methods and devices for measuring impedance in a gastric restriction system
US8301262B2 (en) * 2008-02-06 2012-10-30 Cardiac Pacemakers, Inc. Direct inductive/acoustic converter for implantable medical device
US7844342B2 (en) 2008-02-07 2010-11-30 Ethicon Endo-Surgery, Inc. Powering implantable restriction systems using light
US8221439B2 (en) 2008-02-07 2012-07-17 Ethicon Endo-Surgery, Inc. Powering implantable restriction systems using kinetic motion
US8114345B2 (en) 2008-02-08 2012-02-14 Ethicon Endo-Surgery, Inc. System and method of sterilizing an implantable medical device
US8725260B2 (en) 2008-02-11 2014-05-13 Cardiac Pacemakers, Inc Methods of monitoring hemodynamic status for rhythm discrimination within the heart
US8057492B2 (en) 2008-02-12 2011-11-15 Ethicon Endo-Surgery, Inc. Automatically adjusting band system with MEMS pump
US8591532B2 (en) 2008-02-12 2013-11-26 Ethicon Endo-Sugery, Inc. Automatically adjusting band system
WO2009102640A1 (en) 2008-02-12 2009-08-20 Cardiac Pacemakers, Inc. Systems and methods for controlling wireless signal transfers between ultrasound-enabled medical devices
US8034065B2 (en) 2008-02-26 2011-10-11 Ethicon Endo-Surgery, Inc. Controlling pressure in adjustable restriction devices
US8187162B2 (en) 2008-03-06 2012-05-29 Ethicon Endo-Surgery, Inc. Reorientation port
US8233995B2 (en) 2008-03-06 2012-07-31 Ethicon Endo-Surgery, Inc. System and method of aligning an implantable antenna
US8364276B2 (en) 2008-03-25 2013-01-29 Ebr Systems, Inc. Operation and estimation of output voltage of wireless stimulators
US8588926B2 (en) 2008-03-25 2013-11-19 Ebr Systems, Inc. Implantable wireless accoustic stimulators with high energy conversion efficiencies
EP2452721B1 (en) 2008-03-25 2013-11-13 EBR Systems, Inc. Method of manufacturing implantable wireless acoustic stimulators with high energy conversion efficiency
US7998192B2 (en) 2008-05-09 2011-08-16 Boston Scientific Scimed, Inc. Endoprostheses
US8236046B2 (en) 2008-06-10 2012-08-07 Boston Scientific Scimed, Inc. Bioerodible endoprosthesis
US8798761B2 (en) 2008-06-27 2014-08-05 Cardiac Pacemakers, Inc. Systems and methods of monitoring the acoustic coupling of medical devices
WO2010005571A2 (en) 2008-07-09 2010-01-14 Innurvation, Inc. Displaying image data from a scanner capsule
JP5362828B2 (en) 2008-07-15 2013-12-11 カーディアック ペースメイカーズ, インコーポレイテッド Implant assist for an acoustically enabled implantable medical device
US7985252B2 (en) 2008-07-30 2011-07-26 Boston Scientific Scimed, Inc. Bioerodible endoprosthesis
EP2337609B1 (en) 2008-08-14 2016-08-17 Cardiac Pacemakers, Inc. Performance assessment and adaptation of an acoustic communication link
US8382824B2 (en) 2008-10-03 2013-02-26 Boston Scientific Scimed, Inc. Medical implant having NANO-crystal grains with barrier layers of metal nitrides or fluorides
EP2334230A1 (en) 2008-10-10 2011-06-22 Cardiac Pacemakers, Inc. Systems and methods for determining cardiac output using pulmonary artery pressure measurements
US8593107B2 (en) 2008-10-27 2013-11-26 Cardiac Pacemakers, Inc. Methods and systems for recharging an implanted device by delivering a section of a charging device adjacent the implanted device within a body
US8632470B2 (en) 2008-11-19 2014-01-21 Cardiac Pacemakers, Inc. Assessment of pulmonary vascular resistance via pulmonary artery pressure
TWI503101B (en) * 2008-12-15 2015-10-11 Proteus Digital Health Inc Body-associated receiver and method
US8685093B2 (en) 2009-01-23 2014-04-01 Warsaw Orthopedic, Inc. Methods and systems for diagnosing, treating, or tracking spinal disorders
US8126736B2 (en) 2009-01-23 2012-02-28 Warsaw Orthopedic, Inc. Methods and systems for diagnosing, treating, or tracking spinal disorders
US8694129B2 (en) 2009-02-13 2014-04-08 Cardiac Pacemakers, Inc. Deployable sensor platform on the lead system of an implantable device
US8267992B2 (en) 2009-03-02 2012-09-18 Boston Scientific Scimed, Inc. Self-buffering medical implants
US8189851B2 (en) 2009-03-06 2012-05-29 Emo Labs, Inc. Optically clear diaphragm for an acoustic transducer and method for making same
EP2239793A1 (en) 2009-04-11 2010-10-13 Bayer MaterialScience AG Electrically switchable polymer film structure and use thereof
US8777863B2 (en) * 2009-06-10 2014-07-15 Cardiac Pacemakers, Inc. Implantable medical device with internal piezoelectric energy harvesting
US20100317978A1 (en) * 2009-06-10 2010-12-16 Maile Keith R Implantable medical device housing modified for piezoelectric energy harvesting
US8506495B2 (en) * 2009-06-10 2013-08-13 Cardiac Pacemakers, Inc. Implantable medical devices with piezoelectric anchoring member
US20100324378A1 (en) * 2009-06-17 2010-12-23 Tran Binh C Physiologic signal monitoring using ultrasound signals from implanted devices
US20110044476A1 (en) * 2009-08-14 2011-02-24 Emo Labs, Inc. System to generate electrical signals for a loudspeaker
US20110082376A1 (en) * 2009-10-05 2011-04-07 Huelskamp Paul J Physiological blood pressure waveform compression in an acoustic channel
WO2011049730A2 (en) * 2009-10-21 2011-04-28 Illinois Tool Works Inc. Acoustic wave switch overlay assembly
US9192353B2 (en) * 2009-10-27 2015-11-24 Innurvation, Inc. Data transmission via wide band acoustic channels
EP2502347B1 (en) * 2009-11-18 2014-10-08 Texzec, Inc. Acoustic wave switch assembly and method of forming same
US8406084B2 (en) 2009-11-20 2013-03-26 Avago Technologies Wireless Ip (Singapore) Pte. Ltd. Transducer device having coupled resonant elements
US8626295B2 (en) * 2010-03-04 2014-01-07 Cardiac Pacemakers, Inc. Ultrasonic transducer for bi-directional wireless communication
US8668732B2 (en) 2010-03-23 2014-03-11 Boston Scientific Scimed, Inc. Surface treated bioerodible metal endoprostheses
US8647259B2 (en) 2010-03-26 2014-02-11 Innurvation, Inc. Ultrasound scanning capsule endoscope (USCE)
DE102010027780A1 (en) * 2010-04-15 2011-10-20 Robert Bosch Gmbh Method for driving an ultrasonic sensor and ultrasonic sensor
US11141063B2 (en) 2010-12-23 2021-10-12 Philips Image Guided Therapy Corporation Integrated system architectures and methods of use
US11040140B2 (en) 2010-12-31 2021-06-22 Philips Image Guided Therapy Corporation Deep vein thrombosis therapeutic methods
KR20140005289A (en) * 2011-02-15 2014-01-14 후지필름 디마틱스, 인크. Piezoelectric transducers using micro-dome arrays
JP2014513510A (en) 2011-03-01 2014-05-29 バイエル・インテレクチュアル・プロパティ・ゲゼルシャフト・ミット・ベシュレンクテル・ハフツング Deformable polymer device and automated manufacturing process for making deformable polymer film
TW201250288A (en) 2011-03-22 2012-12-16 Bayer Materialscience Ag Electroactive polymer actuator lenticular system
US9360630B2 (en) 2011-08-31 2016-06-07 Volcano Corporation Optical-electrical rotary joint and methods of use
US8974366B1 (en) 2012-01-10 2015-03-10 Piezo Energy Technologies, LLC High power ultrasound wireless transcutaneous energy transfer (US-TET) source
WO2013142552A1 (en) 2012-03-21 2013-09-26 Bayer Materialscience Ag Roll-to-roll manufacturing processes for producing self-healing electroactive polymer devices
DE102012006527A1 (en) 2012-03-29 2013-10-02 GM Global Technology Operations LLC (n.d. Ges. d. Staates Delaware) Floor structure of a motor vehicle body
WO2013192143A1 (en) 2012-06-18 2013-12-27 Bayer Intellectual Property Gmbh Stretch frame for stretching process
US9286673B2 (en) 2012-10-05 2016-03-15 Volcano Corporation Systems for correcting distortions in a medical image and methods of use thereof
US9858668B2 (en) 2012-10-05 2018-01-02 Volcano Corporation Guidewire artifact removal in images
US10568586B2 (en) 2012-10-05 2020-02-25 Volcano Corporation Systems for indicating parameters in an imaging data set and methods of use
US9367965B2 (en) 2012-10-05 2016-06-14 Volcano Corporation Systems and methods for generating images of tissue
US10070827B2 (en) 2012-10-05 2018-09-11 Volcano Corporation Automatic image playback
US11272845B2 (en) 2012-10-05 2022-03-15 Philips Image Guided Therapy Corporation System and method for instant and automatic border detection
US9324141B2 (en) 2012-10-05 2016-04-26 Volcano Corporation Removal of A-scan streaking artifact
US9307926B2 (en) 2012-10-05 2016-04-12 Volcano Corporation Automatic stent detection
US9292918B2 (en) 2012-10-05 2016-03-22 Volcano Corporation Methods and systems for transforming luminal images
EP2904671B1 (en) 2012-10-05 2022-05-04 David Welford Systems and methods for amplifying light
US9840734B2 (en) 2012-10-22 2017-12-12 Raindance Technologies, Inc. Methods for analyzing DNA
WO2014066576A1 (en) 2012-10-24 2014-05-01 Bayer Intellectual Property Gmbh Polymer diode
JP6322210B2 (en) 2012-12-13 2018-05-09 ボルケーノ コーポレイション Devices, systems, and methods for targeted intubation
US10942022B2 (en) 2012-12-20 2021-03-09 Philips Image Guided Therapy Corporation Manual calibration of imaging system
US11406498B2 (en) 2012-12-20 2022-08-09 Philips Image Guided Therapy Corporation Implant delivery system and implants
CA2895770A1 (en) 2012-12-20 2014-07-24 Jeremy Stigall Locating intravascular images
US10939826B2 (en) 2012-12-20 2021-03-09 Philips Image Guided Therapy Corporation Aspirating and removing biological material
EP2934310A4 (en) 2012-12-20 2016-10-12 Nathaniel J Kemp Optical coherence tomography system that is reconfigurable between different imaging modes
WO2014099899A1 (en) 2012-12-20 2014-06-26 Jeremy Stigall Smooth transition catheters
CA2896006A1 (en) 2012-12-21 2014-06-26 David Welford Systems and methods for narrowing a wavelength emission of light
WO2014100162A1 (en) 2012-12-21 2014-06-26 Kemp Nathaniel J Power-efficient optical buffering using optical switch
WO2014099763A1 (en) 2012-12-21 2014-06-26 Jason Spencer System and method for graphical processing of medical data
US9486143B2 (en) 2012-12-21 2016-11-08 Volcano Corporation Intravascular forward imaging device
WO2014100530A1 (en) 2012-12-21 2014-06-26 Whiseant Chester System and method for catheter steering and operation
CA2895940A1 (en) 2012-12-21 2014-06-26 Andrew Hancock System and method for multipath processing of image signals
EP2934653B1 (en) 2012-12-21 2018-09-19 Douglas Meyer Rotational ultrasound imaging catheter with extended catheter body telescope
US10058284B2 (en) 2012-12-21 2018-08-28 Volcano Corporation Simultaneous imaging, monitoring, and therapy
US9612105B2 (en) 2012-12-21 2017-04-04 Volcano Corporation Polarization sensitive optical coherence tomography system
EP2934280B1 (en) 2012-12-21 2022-10-19 Mai, Jerome Ultrasound imaging with variable line density
US10226597B2 (en) 2013-03-07 2019-03-12 Volcano Corporation Guidewire with centering mechanism
CN105103163A (en) 2013-03-07 2015-11-25 火山公司 Multimodal segmentation in intravascular images
US11154313B2 (en) 2013-03-12 2021-10-26 The Volcano Corporation Vibrating guidewire torquer and methods of use
EP2967391A4 (en) 2013-03-12 2016-11-02 Donna Collins Systems and methods for diagnosing coronary microvascular disease
US9301687B2 (en) 2013-03-13 2016-04-05 Volcano Corporation System and method for OCT depth calibration
US11026591B2 (en) 2013-03-13 2021-06-08 Philips Image Guided Therapy Corporation Intravascular pressure sensor calibration
EP2967488B1 (en) 2013-03-13 2021-06-16 Jinhyoung Park System for producing an image from a rotational intravascular ultrasound device
US10292677B2 (en) 2013-03-14 2019-05-21 Volcano Corporation Endoluminal filter having enhanced echogenic properties
US10219887B2 (en) 2013-03-14 2019-03-05 Volcano Corporation Filters with echogenic characteristics
US10426590B2 (en) 2013-03-14 2019-10-01 Volcano Corporation Filters with echogenic characteristics
US9226078B2 (en) 2013-03-15 2015-12-29 Emo Labs, Inc. Acoustic transducers
USD741835S1 (en) 2013-12-27 2015-10-27 Emo Labs, Inc. Speaker
USD733678S1 (en) 2013-12-27 2015-07-07 Emo Labs, Inc. Audio speaker
USD748072S1 (en) 2014-03-14 2016-01-26 Emo Labs, Inc. Sound bar audio speaker
KR101522670B1 (en) * 2014-08-19 2015-05-26 주식회사 이노칩테크놀로지 Piezoelectric device and electronic device having the same
US9757574B2 (en) 2015-05-11 2017-09-12 Rainbow Medical Ltd. Dual chamber transvenous pacemaker
DE102016104097A1 (en) 2016-03-07 2017-09-07 Biotronik Se & Co. Kg Implant and method of operating the same
US10675476B2 (en) 2016-12-22 2020-06-09 Cardiac Pacemakers, Inc. Internal thoracic vein placement of a transmitter electrode for leadless stimulation of the heart
US11551905B2 (en) * 2018-03-19 2023-01-10 Intel Corporation Resonant process monitor
US11654287B2 (en) 2019-08-30 2023-05-23 Ebr Systems, Inc. Pulse delivery device including slew rate detector, and associated systems and methods
CN115308301B (en) * 2022-08-16 2023-03-10 中山大学 Measuring device capable of measuring elastic modulus of cells and cell nucleuses

Family Cites Families (82)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2967957A (en) * 1957-09-17 1961-01-10 Massa Frank Electroacoustic transducer
DE1101331B (en) * 1958-04-03 1961-03-09 Hoesch Ag Feed, bending or guide roller for screw seam pipe welding systems
DE1902849C3 (en) * 1968-01-25 1978-06-29 Pioneer Electronic Corp., Tokio Mechanical-electrical or electrical-mechanical converter
US3568661A (en) 1968-10-02 1971-03-09 Us Health Education & Welfare Frequency modulated ultrasound technique for measurement of fluid velocity
JPS4926890B1 (en) * 1970-12-04 1974-07-12
US3757770A (en) 1971-02-22 1973-09-11 Bio Tel Western Physiological pressure sensing and telemetry means employing a diode connected transistor transducer
JPS5221364B2 (en) * 1971-11-04 1977-06-10
JPS5123439B2 (en) * 1971-11-05 1976-07-16
JPS5410214B2 (en) * 1973-10-15 1979-05-02
JPS5215972B2 (en) * 1974-02-28 1977-05-06
JPS5220297Y2 (en) * 1974-05-10 1977-05-10
US4170742A (en) * 1974-07-15 1979-10-09 Pioneer Electronic Corporation Piezoelectric transducer with multiple electrode areas
GB1520118A (en) * 1975-08-11 1978-08-02 Rank Organisation Ltd Transducers
US4051455A (en) * 1975-11-20 1977-09-27 Westinghouse Electric Corporation Double flexure disc electro-acoustic transducer
US4056742A (en) * 1976-04-30 1977-11-01 Tibbetts Industries, Inc. Transducer having piezoelectric film arranged with alternating curvatures
US4127110A (en) 1976-05-24 1978-11-28 Huntington Institute Of Applied Medical Research Implantable pressure transducer
US4653508A (en) 1976-06-21 1987-03-31 Cosman Eric R Pressure-balanced telemetric pressure sensing system and method therefore
US4660568A (en) 1976-06-21 1987-04-28 Cosman Eric R Telemetric differential pressure sensing system and method therefore
US4593703A (en) 1976-06-21 1986-06-10 Cosman Eric R Telemetric differential pressure sensor with the improvement of a conductive shorted loop tuning element and a resonant circuit
US4096756A (en) * 1977-07-05 1978-06-27 Rca Corporation Variable acoustic wave energy transfer-characteristic control device
US4181864A (en) * 1978-06-22 1980-01-01 Rca Corporation Matching network for switchable segmented ultrasonic transducers
US4227407A (en) 1978-11-30 1980-10-14 Cornell Research Foundation, Inc. Volume flow measurement system
DE3009068A1 (en) * 1980-03-10 1981-09-24 Reinhard Dipl.-Ing. Lerch PIEZOPOLYMER CONVERTER WITH FIXED MEMBRANE SUPPORT
US4433400A (en) * 1980-11-24 1984-02-21 The United States Of America As Represented By The Department Of Health And Human Services Acoustically transparent hydrophone probe
US4517665A (en) * 1980-11-24 1985-05-14 The United States Of America As Represented By The Department Of Health And Human Services Acoustically transparent hydrophone probe
FR2511570A1 (en) * 1981-08-11 1983-02-18 Thomson Csf ELECTROACOUSTIC TRANSDUCER WITH PIEZOELECTRIC POLYMER
JPS58137317A (en) * 1982-02-09 1983-08-15 Nec Corp Thin-film piezoelectric compound oscillator
US4478219A (en) 1982-03-24 1984-10-23 Manuel Dujovny Temporary microvascular occluder
FR2542552B1 (en) 1983-03-07 1986-04-11 Thomson Csf ELECTROACOUSTIC TRANSDUCER WITH PIEZOELECTRIC DIAPHRAGM
US5438553A (en) * 1983-08-22 1995-08-01 Raytheon Company Transducer
US4519401A (en) 1983-09-20 1985-05-28 Case Western Reserve University Pressure telemetry implant
GB8325861D0 (en) * 1983-09-28 1983-11-02 Syrinx Presicion Instr Ltd Force transducer
US5178153A (en) 1984-03-08 1993-01-12 Einzig Robert E Fluid flow sensing apparatus for in vivo and industrial applications employing novel differential optical fiber pressure sensors
JPS60189307A (en) * 1984-03-09 1985-09-26 Toshiba Corp Piezoelectric thin film resonator and its manufacture
GB8422876D0 (en) * 1984-09-11 1984-10-17 Secr Defence Silicon implant devices
US4541431A (en) 1984-09-20 1985-09-17 Telectronics Pty. Ltd. Use of telemetry coil to replace magnetically activated reed switch in implantable devices
US4653036A (en) * 1984-10-23 1987-03-24 The United States Of America As Represented By The Department Of Health And Human Services Transducer hydrophone with filled reservoir
US4580074A (en) * 1984-11-26 1986-04-01 General Motors Corporation Piezoelectric transducer with coded output signal
US4676255A (en) 1985-07-03 1987-06-30 Cosman Eric R Telemetric in-vivo calibration method and apparatus using a negative pressure applicator
US4781715A (en) 1986-04-30 1988-11-01 Temple University Of The Commonwealth System Of Higher Education Cardiac prosthesis having integral blood pressure sensor
US4835435A (en) * 1988-01-19 1989-05-30 Hewlett-Packard Company Simple, sensitive, frequency-tuned drop detector
US4911172A (en) * 1988-03-28 1990-03-27 Telectronics Pacing Systems, Inc. Probe tip ultrasonic transducers and method of manufacture
US4846191A (en) 1988-05-27 1989-07-11 Data Sciences, Inc. Device for chronic measurement of internal body pressure
US5024224A (en) 1988-09-01 1991-06-18 Storz Instrument Company Method of readout of implanted hearing aid device and apparatus therefor
US4958100A (en) * 1989-02-22 1990-09-18 Massachusetts Institute Of Technology Actuated truss system
US5160870A (en) * 1990-06-25 1992-11-03 Carson Paul L Ultrasonic image sensing array and method
US5306294A (en) 1992-08-05 1994-04-26 Ultrasonic Sensing And Monitoring Systems, Inc. Stent construction of rolled configuration
US5367500A (en) * 1992-09-30 1994-11-22 The United States Of America As Represented By The Secretary Of The Navy Transducer structure
US5628782A (en) 1992-12-11 1997-05-13 W. L. Gore & Associates, Inc. Method of making a prosthetic vascular graft
US5423334A (en) 1993-02-01 1995-06-13 C. R. Bard, Inc. Implantable medical device characterization system
US5381067A (en) * 1993-03-10 1995-01-10 Hewlett-Packard Company Electrical impedance normalization for an ultrasonic transducer array
US5314457A (en) 1993-04-08 1994-05-24 Jeutter Dean C Regenerative electrical
US5339290A (en) * 1993-04-16 1994-08-16 Hewlett-Packard Company Membrane hydrophone having inner and outer membranes
US5873835A (en) 1993-04-29 1999-02-23 Scimed Life Systems, Inc. Intravascular pressure and flow sensor
US5381386A (en) * 1993-05-19 1995-01-10 Hewlett-Packard Company Membrane hydrophone
US5289821A (en) 1993-06-30 1994-03-01 Swartz William M Method of ultrasonic Doppler monitoring of blood flow in a blood vessel
US5495137A (en) * 1993-09-14 1996-02-27 The Whitaker Corporation Proximity sensor utilizing polymer piezoelectric film with protective metal layer
US5483501A (en) * 1993-09-14 1996-01-09 The Whitaker Corporation Short distance ultrasonic distance meter
US5476488A (en) 1993-12-15 1995-12-19 Pacesetter, Inc. Telemetry system power control for implantable medical devices
US5488954A (en) * 1994-09-09 1996-02-06 Georgia Tech Research Corp. Ultrasonic transducer and method for using same
DE69416129T2 (en) * 1994-10-10 1999-07-01 Endress Hauser Gmbh Co A method for operating an ultrasonic transducer and circuit arrangement for performing the method
US5562714A (en) 1995-02-03 1996-10-08 Medtronic, Inc. Magnetic field strength regulator for implant
US5832924A (en) 1995-02-16 1998-11-10 Medwave, Inc. Method of positioning a sensor for determining blood pressure of an artery
US5956292A (en) * 1995-04-13 1999-09-21 The Charles Stark Draper Laboratory, Inc. Monolithic micromachined piezoelectric acoustic transducer and transducer array and method of making same
US5571152A (en) 1995-05-26 1996-11-05 Light Sciences Limited Partnership Microminiature illuminator for administering photodynamic therapy
US5995860A (en) 1995-07-06 1999-11-30 Thomas Jefferson University Implantable sensor and system for measurement and control of blood constituent levels
US5704352A (en) 1995-11-22 1998-01-06 Tremblay; Gerald F. Implantable passive bio-sensor
US5833603A (en) 1996-03-13 1998-11-10 Lipomatrix, Inc. Implantable biosensing transponder
US5825117A (en) * 1996-03-26 1998-10-20 Hewlett-Packard Company Second harmonic imaging transducers
US5913826A (en) 1996-06-12 1999-06-22 K-One Technologies Wideband external pulse cardiac monitor
US5733313A (en) 1996-08-01 1998-03-31 Exonix Corporation RF coupled, implantable medical device with rechargeable back-up power source
US5741316A (en) 1996-12-02 1998-04-21 Light Sciences Limited Partnership Electromagnetic coil configurations for power transmission through tissue
US5735887A (en) 1996-12-10 1998-04-07 Exonix Corporation Closed-loop, RF-coupled implanted medical device
US6050950A (en) 1996-12-18 2000-04-18 Aurora Holdings, Llc Passive/non-invasive systemic and pulmonary blood pressure measurement
WO1998029030A1 (en) 1997-01-03 1998-07-09 Biosense Inc. Pressure-sensing stent
US5957950A (en) 1997-01-21 1999-09-28 Northwestern University Medical School Vascular acoustic emission analysis in a balloon angioplasty system
EP0897690B1 (en) 1997-08-15 2013-04-24 Academisch Ziekenhuis Leiden h.o.d.n. LUMC Pressure sensor for use in an aneurysmal sac
US6409674B1 (en) 1998-09-24 2002-06-25 Data Sciences International, Inc. Implantable sensor with wireless communication
US5967986A (en) 1997-11-25 1999-10-19 Vascusense, Inc. Endoluminal implant with fluid flow sensing capability
US5807258A (en) 1997-10-14 1998-09-15 Cimochowski; George E. Ultrasonic sensors for monitoring the condition of a vascular graft
US5843135A (en) 1997-10-20 1998-12-01 Medtronic, Inc. Pacing system with lead having a single conductor for connecting to pressure sensor and electrode
US6171264B1 (en) 1998-05-15 2001-01-09 Biosys Ab Medical measuring system

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EP1042822B1 (en) 2010-05-26
WO1999034453A1 (en) 1999-07-08
US6140740A (en) 2000-10-31
EP1042822A4 (en) 2006-09-13
ATE469441T1 (en) 2010-06-15
US20030006673A1 (en) 2003-01-09
EP1042822A1 (en) 2000-10-11
US6504286B1 (en) 2003-01-07
DE69841689D1 (en) 2010-07-08
CA2316843C (en) 2010-09-21
AU2450099A (en) 1999-07-19
JP2002528887A (en) 2002-09-03
JP4288388B2 (en) 2009-07-01
US6720709B2 (en) 2004-04-13

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