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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.
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.
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2.发明公开
公开(公告)号：EP0939661A1
公开(公告)日：1999-09-08
申请号：EP95924761.0
申请日：1995-06-28
申请人： MEDTRONIC, INC.
IPC分类号： A61N1
CPC分类号： A61N1/37247 , A61N1/37235 , A61N1/37258
摘要： A patient programmer for facilitating patient control over an implanted medical device, such as an implanted spinal cord stimulator or the like, is disclosed. A programmer in accordance with the present invention is a portable, light-weight, easy to use patient programmer. The programmer enables a patient to control the operation of his or her implanted device outside of a clinical setting. The programmer incorporates features which ensure that users of varying ages, education levels, dexterity levels, physical and mental health will be able to safely control the operation of their implanted devices, within predefined limits established by a physician or clinician. Circuitry is provided for avoiding battery depletion and/or undesired programmer/implanted device communication in the event that the programmer's key is accidentally depressed (for example, due to being jammed into a purse or pocket) or is depressed repeatedly or continuously over an extended period of time. The programmer provides tactile, audible, and visible feedback to the user to convey information regarding the proper (or improper) operation of the programmer and the implanted device. In one embodiment, the device includes a beeper and light-emitting diodes (LEDs) to indicate, for example, that a desired programming function has been successful or unsuccessful.
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公开(公告)号：EP0929342A1
公开(公告)日：1999-07-21
申请号：EP97933360.0
申请日：1997-07-16
申请人： MEDTRONIC, INC.
IPC分类号： A61N1
CPC分类号： A61N1/0573
摘要： In an endocardial, active fixation, screw-in lead of the type having a fixation helix (14) adapted to be rotated in a first advancement direction out of an electrode head chamber and into cardiac tissue by rotation of a lead connector end and attached lead conductor (18) with respect to an insulating sheath (12) in the first direction and retracted into the chamber (50) by rotation of the lead connector in the opposite retraction direction, a retraction stop mechanism (60) for preventing over rotation of the helix (14) in the retraction direction. The rotational motion of the lead conductor (18) is transmitted to the helix by a connecting assembly (52) and is translated into axial advancement and retraction of the helix by a guide (70) cooperating with the helix turns. A retraction stop mechanism (60) stops rotation of the helix in the retraction of the helix into the chamber and allows rotation of helix in the advancement direction. The retraction stop mechanism includes a fixed stop (62) formed of a plurality of fixed cam (66) and axial stop surfaces (68) surrounding a proximal end bore of the chamber through which the lead conductor passes and a movable stop (64) formed in the connecting mechanism of a like plurality of rotatable cam (76) and axial stop surfaces (78) aligned to face the fixed cam and axial stop surfaces adapted to engage in a locked relation of the stop surfaces upon full retraction of the fixation device into the chamber.
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公开(公告)号：EP0863726A1
公开(公告)日：1998-09-16
申请号：EP96937651.0
申请日：1996-10-02
申请人： MEDTRONIC, INC.
IPC分类号： A61B18
CPC分类号： A61B18/1402 , A61B18/1815 , A61B2018/00196 , A61B2018/00291 , A61B2018/1253 , A61B2018/1417 , A61B2018/1472 , A61B2018/1475 , A61B2018/1861 , A61B2218/002 , A61B2218/007 , A61M3/0279
摘要： An electrocautery device is disclosed. In accordance with one aspect of the invention, the electrocautery electrode/tip is provided with a hollow, conductive tube terminating at its distal end in a ball point type tip. Fluid, preferably conductive fluid, is applied to the proximal end of the hollow electrode/tip, and expelled from the distal end thereof during electrocautery. The ball point distal tip allows the distal tip to be directly applied to the tissue and 'rolled' or slid along the tissue. This allows the distal tip to be moved across the tissue without dragging or snagging on the tissue. In addition, the conductive fluid expelled from the distal tip further lubricates the distal tip as it moves across the tissue. If conductive fluid is used, the conductive fluid emanating from the electrode/tip conducts the RF electrocautery energy away from the distal tip so that it is primarily the fluid, rather than the distal tip that actually accomplishes the cauterizing of tissue. That is, the fluide serves as a 'virtual' electrocautery electrode. Since it is the fluid, rather than the distal tip that cauterizes, coagulates and ablates, no burns or perforations are made to the tissue, reducing the amount of debris at the site. Also, the flow of fluid through the electrode/tip tends to keep the distal tip clean and cool.
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5.发明公开MOVEMENT POWERED MEDICAL PULSE GENERATOR HAVING A FULL-WAVE RECTIFIER WITH DYNAMIC BIAS 失效装置为医疗PULSES铁矿石供应通过使用身体的移动力，与动态VORSPONNUNGSREGELUNG全波ENDER评委
公开(公告)号：EP0843576A2
公开(公告)日：1998-05-27
申请号：EP95943812.0
申请日：1995-12-15
申请人： MEDTRONIC, INC.
发明人： WEIJAND, Koen, J.
CPC分类号： A61N1/3785 , H02M7/219 , H02M2007/2195 , Y02B70/1408
摘要： The present invention concerns pulse generators which are powered through movement. Such devices include both implantable medical devices, such as cardiac pacemakers, as well as timepieces such as wristwatches. The present invention particularly concerns a pulse generator which features a full-wave rectifier circuit which has dynamic bias. The full-wave rectifier circuit is implemented using four field-effect transistors (FETs) operable to selectively establish the paths between first and second input terminals and first and second output terminals thereof. Alternating pairs of the diode/FETs are rendered conductive during positive and negative excursions of the input signal to be rectified. Two differential sense amplifiers are associated with two respective ones of the diode/FETs. A dynamic bias circuit is responsive to both positive and negative excursions of the input signal to provide bias current to at least one of the differential sense amplifiers, such that the predetermined threshold amount is substantially less than the threshold of conventional diodes.
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公开(公告)号：EP0787227A1
公开(公告)日：1997-08-06
申请号：EP96926236.0
申请日：1996-08-01
CPC分类号： A61F13/15593 , D04H3/04 , D04H3/05
摘要： A process and an apparatus for high speed manufacture of a composite sheet material includes a cylindrical-cam-driven strand-traverse guide that loops strand, preferably spandex, around pins projecting from a pair of advancing pin conveyors which then transfer the strand to the surface of a moving sheet. Elastic composite sheet material is particularly suited for use in elastic components of disposable diapers, adult incontinence articles and other garments.
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公开(公告)号：EP0779939A1
公开(公告)日：1997-06-25
申请号：EP95931006.0
申请日：1995-08-30
CPC分类号： C23C16/26 , A61F2310/00574 , A61L27/303 , C23C16/442 , Y10T428/2991 , Y10T428/30
摘要： Pure unalloyed pyrocarbons having wear resistance suitable for use in pyrocarbon-coated heart valve components and having mechanical properties, such as flexural strength and toughness, superior to commercial silicon-alloyed pyrocarbons are deposited in fluidized bed coaters. Coating conditions are carefully controlled so as to maintain a precise bed size within a defined coating enclosure which will assure a substantially constant surface deposition temperature that in turn assures deposition of homogenous unalloyed pyrocarbons having these improved mechanical properties.
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公开(公告)号：EP0773754A1
公开(公告)日：1997-05-21
申请号：EP96913232.0
申请日：1996-04-26
申请人： MEDTRONIC, INC.
发明人： PONCET, Philippe
IPC分类号： A61F2
CPC分类号： A61F2/95 , A61F2/86 , A61F2002/826 , A61F2002/9517 , A61F2002/9522
摘要： The invention is a method for deploying a stent including the steps of providing a sheath (10) containing a plurality of stents (21); locating the distal end (11) of the sheath (10) at a treatment site (12) in a passage (14); and moving the sheath (10) and a first stent (21) relative to each other a distance sufficient to expose the first stent to the passage by actuating a stent deployment mechanism disposed at the proximal end of the sheath, the distance being determined solely by the structure of the stent deployment mechanism. The invention also includes a stent assembly comprising a sheath (10); a stent stop (24) within the sheath (10) at the distal end (11) of the sheath (10); a stent disposed against the stent stop (24); an actuator; and an actuator limit stop. Also included within the invention is a stent loading mechanism.
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公开(公告)号：EP0757542A1
公开(公告)日：1997-02-12
申请号：EP96903543.0
申请日：1996-01-17
申请人： MEDTRONIC, INC.
CPC分类号： A61B5/0215 , A61B2560/0257 , A61N1/08 , A61N1/3655 , A61N1/36564 , Y10S977/90 , Y10S977/905
摘要： A capacitive pressure and temperature sensing system for providing signals representative of the magnitude of body fluid absolute pressure at a selected site and ambient operating conditions, including body temperature, at the site. An implantable lead having a sensor module formed in its distal end is coupled to a monitor that powers a sensor circuit in the sensor module and demodulates and stores absolute pressure and temperature data derived from signals generated by the sensor circuit. The sensor module is formed with a pickoff capacitor that changes capacitance with pressure changes and a reference capacitor that is relatively insensitive to pressure changes. The sensor circuit provides charge current that changes with temperature variation at the implant site, alternately charges and discharges the two capacitors, and provides timing pulses having distinguishable parameters at the end of each charge cycle that are transmitted to the demodulator. The demodulator detects and synchronizes the timing pulses and derives pressure and temperature analog voltage values representative of the intervals between the timing pulses which are digitized and stored in the monitor. The monitor may also be coupled with other sensors for measuring and storing related patient body parameters, e.g. blood gas, EGM, and patient activity.
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公开(公告)号：EP0751800A1
公开(公告)日：1997-01-08
申请号：EP95943584.0
申请日：1995-11-21
申请人： MEDTRONIC, INC.
IPC分类号： A61N1
CPC分类号： A61N1/057 , A61N1/056 , A61N1/0568
摘要： The present invention is directed to a single pass medical electrical lead (2). In one embodiment, the lead feature a pair of bipolar electrodes positioned along the lead body so that they are positioned in the ventricle and atrium respectively when the lead (2) is implanted. The lead body features a 90 degree bent reinforced section (5). The bend has a radius of curvature approximately 13 mm and begins approximately 90 mm from the distal end. This curved section is approximately 40 mm in length when straightened. The ventricular electrodes are positioned approximately 28 mm apart. The ventricular cathode electrode is positioned at the distal end of the lead. The atrial electrodes (20, 21) are positioned approximately between 5 - 35 mm apart, with 28 mm preferred. The atrial anode is located at a position immediately adjacent and proximal the 90 degree bent reinforced section.
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