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33 条记录 (耗时 0.027 秒)

    SYSTEM FOR TREATMENT OF RESPIRATORY DISORDERS
    22.
    发明授权
    SYSTEM FOR TREATMENT OF RESPIRATORY DISORDERS 失效
    系统用于治疗呼吸问题

    公开(公告)号：EP0917485B1

    公开(公告)日：2004-09-22

    申请号：EP97932309.4

    申请日：1997-06-26

    申请人： Medtronic, Inc.

    发明人： CHRISTOPHERSON, Mark, A. ,  SOMMER, John, L. ,  NEISZ, Johann, J.

    IPC分类号： A61N1/36 ,  A61B5/03

    CPC分类号： A61B5/03 ,  A61B5/7207 ,  A61N1/3601

    摘要： An implantable sensing device includes a sensing element and a mounting element. The mounting element has a first end and a second end with a longitudinal axis therethrough. The sensing element is positioned at the first end of the mounting element with the mounting element having a length that is adjustable along the longitudinal axis. The mounting element includes a sleeve having a first open end and a second open end with the longitudinal axis therethrough. The sensing element is positioned in the second open end and includes a lead body connected thereto extending through the second open end. The sleeve includes an outer sleeve member coupled for adjustment along the longitudinal axis with respect to an inner sleeve member. Further, the mounting element may include a flexible element about the first open end extending outwardly relative to the longitudinal axis and a flange element extending outwardly relative to the longitudinal axis from at least a portion of the second end. The device can be implanted in a bone with the flange element and the flexible element for direct or indirect contact with the anterior and posterior surface of the bone.

    METHOD AND APPARATUS FOR OPERATING THERAPY SYSTEM
    23.
    发明公开
    METHOD AND APPARATUS FOR OPERATING THERAPY SYSTEM 失效
    方法和设备的操作系统疗法

    公开(公告)号：EP0957983A1

    公开(公告)日：1999-11-24

    申请号：EP97931392.0

    申请日：1997-06-25

    申请人： MEDTRONIC, INC.

    发明人： CHRISTOPHERSON, Mark, A. ,  NEISZ, Johann, J.

    IPC分类号： A61N1 ,  A61F9

    CPC分类号： A61N1/3601

    摘要： A method for operating an implantable therapy system to conserve energy includes providing an implantable sensing device that generates a signal as a function of a physiological parameter of a patient during a treatment period. The signal is monitored during at least portions of the treatment period to detect a physiological event for use in controlling therapy of the patient during the treatment period. Energy consumption by the sensing device is terminated during the treatment period for at least portions of the treatment period when signal monitoring is not performed. Another method for operating an implantable therapy system for conserving energy includes providing an implantable component for performance of a function during a treatment period for the therapy system. The implantable component is operable in at least a first state during the treatment period and a second state outside of the treatment period; the first state using more energy than the second state. The implantable component is operated in the first state when performance of the function during a treatment period is required and operated in the second state when performance of the function is not required outside the treatment period. Another method of operating an implantable therapy system includes monitoring a periodic physiological parameter for controlling therapy of a patient during a treatment period. The measured physiological period for the parameter of the patient is compared to at least one predetermined period threshold to determine nonperiodic behavior of the monitored periodic physiological parameter and suspending therapy of the patient as a function thereof. Systems for use with such methods are also provided.

    FEEDBACK SYSTEM FOR RF ABLATION BY MEANS OF A VIRTUAL ELECTRODE AND COOLING PROTECTION
    25.
    发明授权
    FEEDBACK SYSTEM FOR RF ABLATION BY MEANS OF A VIRTUAL ELECTRODE AND COOLING PROTECTION 有权
    反馈系统的射频消融BY虚拟铅和保护冷却

    公开(公告)号：EP1450712B1

    公开(公告)日：2011-05-04

    申请号：EP02784623.7

    申请日：2002-11-27

    申请人： Medtronic, Inc.

    发明人： ONYEKABA, Chike, O. ,  CHRISTOPHERSON, Mark, A.

    IPC分类号： A61B18/12 ,  A61B18/14

    CPC分类号： A61B18/14 ,  A61B18/1233 ,  A61B2018/00029 ,  A61B2018/00702 ,  A61B2018/00708 ,  A61B2018/00797 ,  A61B2018/00821 ,  A61B2018/00875 ,  A61B2018/1472

    摘要： The present invention provides an apparatus and a method for producing a virtual electrode within or upon a tissue to be treated with radio frequency alternating electric current, such tissues including but not limited to brain, liver, cardiac, prostate, breast, and vascular tissues and neoplasms. An apparatus in accordance with the present invention includes a source of super-cooled fluid for selectively providing super-cooled fluid to the target tissue to be protected to cause a temporary cessation of cellular or electrical activity, a supply of conductive or electrolytic fluid to be provided to the target tissue to be ablated, and alternating current generator, and a processor for creating, maintaining, and controlling the ablation process by the interstitial or surficial delivery of the fluid to a tissue and the delivery of electric power to the tissue via the virtual electrode. A method in accord with the present invention includes delivering super-cooled fluid to the target tissue to cause a temporary cessation of cellular or electrical activity, evaluating whether the temporary cessation of cellular or electrical activity is the desired cessation of cellular or electrical activity, and if so, delivering a conductive fluid to the predetermined tissue ablation site for a predetermined time period, applying a predetermined power level of radio frequency current to the tissue, monitoring at least one of several parameters, and adjusting either the applied power and/or the fluid flow in response to the measured parameters.

    IMPLANTABLE LEAD-BASED SENSOR POWERED BY PIEZOELECTRIC TRANSFORMER
    26.
    发明授权
    IMPLANTABLE LEAD-BASED SENSOR POWERED BY PIEZOELECTRIC TRANSFORMER 有权
    位于一行并综合医疗植入的传感器提供由压电TRANS格式化器

    公开(公告)号：EP1620171B1

    公开(公告)日：2010-11-17

    申请号：EP04749563.5

    申请日：2004-03-31

    申请人： Medtronic, Inc.

    发明人： HOUBEN, Richard, P.M. ,  CHRISTOPHERSON, Mark, A. ,  DONDERS, Adrianus P. ,  LEINDERS, Robert ,  DENO, Curtis, D.

    IPC分类号： A61N1/362

    CPC分类号： A61N1/08 ,  A61N1/36542

    摘要： In general, the invention is directed to an IMD having a piezoelectric transformer to power a lead-based sensor. The IMD powers the piezoelectric transformer with a low amplitude signal. The piezoelectric transformer serves to convert the voltage level of the low amplitude signal to a higher voltage level to drive the sensor. produced by a battery in the IMD to voltage levels appropriate for IMD operation. A piezoelectric transformer offers small size and low profile, as well as operational efficiency, and permits the IMD to transmit a low amplitude signal to a remote sensor deployed within an implantable lead. In addition, the piezoelectric transformer provides electrical isolation that reduces electromagnetic interference among different sensors.

    ATRAUMATIC SENSOR LEAD ASSEMBLIES
    27.
    发明公开
    ATRAUMATIC SENSOR LEAD ASSEMBLIES 有权
    ATRAUMATISCHE SENSORLEITUNGSANORDNUNGEN

    公开(公告)号：EP1560625A2

    公开(公告)日：2005-08-10

    申请号：EP03799840.8

    申请日：2003-10-31

    申请人： Medtronic, Inc.

    发明人： CHRISTOPHERSON, Mark, A. ,  SOMMER, John, L. ,  POOL, Nancy, P ,  BONDE, Eric

    IPC分类号： A61N1/05

    CPC分类号： A61N1/05 ,  A61N1/056

    摘要： The invention is directed to lead configurations for sensors that allow for less invasive sensor replacement procedures. In one configuration, a sensor lead assembly includes an outer lead body and an inner lead including a sensor such as an electrochemical glucose sensor. The inner lead can be positioned in an inner conduit of the outer lead body. The outer lead body may be substantially permanently implanted in the patient, and the inner lead can be implanted through the inner conduit of the outer lead body. Once the sensor of the inner lead has worn out or otherwise exhausted its useful life, the inner lead can be removed, and a new inner lead can be implanted in place of the old inner lead.

    GAIN CONTROL FOR A PERIODIC SIGNAL
    29.
    发明授权
    GAIN CONTROL FOR A PERIODIC SIGNAL 失效
    增益控制的周期信号

    公开(公告)号：EP0914179B1

    公开(公告)日：2004-09-22

    申请号：EP97930223.9

    申请日：1997-06-25

    申请人： Medtronic, Inc.

    发明人： NEISZ, Johann, J. ,  CHRISTOPHERSON, Mark, A.

    IPC分类号： A61N1/36 ,  A61N1/37

    CPC分类号： A61N1/3601 ,  A61N1/3704

    摘要： A gain control method for providing a gain controlled signal representative of a periodic physiological parameter of a patient includes providing a signal characteristic of the periodic physiological parameter. The periodic physiological parameter includes a plurality of periodic cycles. Gain of the signal is updated only once per periodic cycle following detection of a periodic event. The updating is performed by monitoring an amplitude of the signal between detection of periodic events and comparing the amplitude to a gain control amplitude threshold. Gain of the signal is updated as a function of the comparison. Further, gain is updated following expiration of a predetermined period of time if a periodic event is not detected within the predetermined period of time. The physiological parameter may be respiratory effort. An apparatus for providing such gain control is also provided.