Abstract: The present invention relates to a system and a method for improving the security of an operation for writing the memory of an active implantable medical device by long distance telemetry, in particular via network connection with a writing main device. The system and method according to the present invention comprise an intermediate proximity device allowing communication between the active implantable medical device and the main writing device and at least one unlocking tool allowing access to the active implantable medical device.

Abstract: The present disclosure relates to an implantable lead comprising an elongated lead body having at least one lumen therein and at least one through hole, and at least one electrically conductive wire. For at least one of said at least one lumen, a first through hole extends from an outer surface of the lead body into said lumen, and an electrically conductive wire is arranged in said lumen at least on one side of said first through hole. Furthermore, said electrically conductive wire is further arranged in a configuration exiting the lumen via said first through hole and wound around a predefined portion of the outer surface of the lead body.

Abstract: The present disclosure provides a switch power supply circuit, which includes a step-down transistor, a control module, a first switch transistor, a second switch transistor, a third switch transistor, and a power switch transistor. In the switch power supply circuit of the present disclosure, the first terminal of the second switch transistor is directly coupled with the input voltage, and the second switch transistor can directly obtain sufficient driving current from the input voltage to drive the power switch transistor. The present application can ensure the reliability and efficiency of the system without an additional energy storage capacitor, which reduces the costs of the system.

Abstract: The present disclosure relates to an electrical connector cap, in particular for an implantable lead, the electrical connector cap comprising an elongated body having at least one lumen and at least one through hole extending from an outer surface of the elongated body into the lumen, and at least one electrically conductive member arranged on an outer circumference of the elongated body over said at least one through hole of the elongated body. Furthermore, said at least one electrically conductive member comprises at least one through hole (extending from an outer surface of the electrically conductive member into the lumen through said at least one through hole of the elongated body. The disclosure further relates to implantable lead assemblies comprising said electrical connector cap, and to an implantable lead member usable with said electrical connector cap.

Abstract: A constant current driving circuit and a corresponding photoelectric smoke alarm circuit are provided. The constant current driving circuit includes a reference voltage source module (1), a linear voltage regulator module (3), a level conversion module (2), a current mirror module (4) and a first NMOS transistor. The linear voltage regulator module (3) may control turning on and turning off thereof according to actual requirements, thus electrical energy loss may effectively be reduced for some periodically used devices. The constant current driving circuit and the corresponding photoelectric smoke alarm circuit may provide a constant current source, so that auxiliary output performance remains stable within a full temperature range, a certain timing sequence requirement is met, no standby power is consumed when not working, performance is stable, power consumption is low, and application range is wide.

Abstract: According to some embodiments, a device operates by comparative morphological analysis of depolarization signals collected in spontaneous rhythm on separate respective channels, with two temporal components combined into a single 2D parametric VGM vectogram characteristic. Similarity quantification methods evaluate a variation over time of a descriptor parameter of a current VGM compared to a stored previous reference VGM. This variation is compared with predetermined thresholds to diagnose an occurrence of remodeling or reverse remodeling in a patient, and/or to detect a lead failure or an occurrence of ischemia. The descriptor parameter is a function of a velocity vector of the VGM, a comparison relating to a correlation coefficient between respective magnitudes of a current VGM velocity vector and of a reference VGM velocity vector, and an average angle between these respective velocity vectors.

Abstract: The present disclosure relates to an implantable lead comprising an elongated lead body having at least one lumen therein and at least one through hole, and at least one electrically conductive wire. For at least one of said at least one lumen, a first through hole extends from an outer surface of the lead body into said lumen, and an electrically conductive wire is arranged in said lumen at least on one side of said first through hole. Furthermore, said electrically conductive wire is further arranged in a configuration exiting the lumen via said first through hole and wound around a predefined portion of the outer surface of the lead body.

Abstract: The disclosure relates to a method of manufacturing an implantable defibrillation coil for a lead of an active implantable medical device, the defibrillating coil includes at least one elongate conductive coil which includes a plurality of non-contiguous turns. The method includes inserting a tube of polymeric material within the elongated conductive coil, supplying thermal energy to soften the tube, applying pressure on the assembly formed by the elongate conductive coil and causing the tube to deform the tube wall by insertion of the tube wall between the turns of the elongate conductive coil.

Abstract: A drive circuit with a zero-crossing detection function, and a zero-crossing detection method. The drive circuit comprises: a power switch transistor, a pull-up drive transistor, a first pull-down drive transistor and a second pull-down drive transistor. When an inductor starts to discharge, the first pull-down current and the second pull-down current jointly pull down a gate terminal of the power switch transistor, such that the power switch transistor is in a cut-off state; after a set time, the first pull-down current is turned off; and when the inductor ends discharging, a parasitic capacitance of the power switch transistor couples with the drop signal, and when the drop signal is detected, the pull-up current pulls up the gate terminal of the power switch transistor, such that the power switch transistor is in a turn-on state.

Abstract: Disclosed are systems, devices and methods that produce at least two distinct temporal components from two distinct endocardial electrogram (EGM) signals collected concurrently, determines a non-temporal 2D characteristic representative of the cardiac cycle to be analyzed, from the variations of one of the temporal components as a function of another of the temporal components and comparing the characteristic of the current cycle to two reference characteristics previously obtained and stored, one in a situation of complete capture and the other in a situation of spontaneous rhythm. Respective values of similarity descriptors are derived of these two comparisons, which are used to calculate a metric quantifying a fusion rate.

Abstract: A device which includes a generator of electric current pulses and a neurostimulation probe with M sectoral electrodes forming stimulation poles for passing a current between at least one anode and at least one cathode in a predetermined stimulation configuration. The generator includes N current sources and N current sinks, the N sources and the N sinks being defined independently of the M electrodes. A first distribution circuit can indiscriminately and dynamically switch any of the N sources to any of the M electrodes, and a second distribution circuit can indiscriminately and dynamically switch any of the N sinks to any of the M electrodes. The device can thus define a plurality of commutation combinations between sources and/or sinks, providing a single average current in the organ to be stimulated for different respective predetermined pole configurations.

Abstract: The present invention relates to the field of medical devices and discloses an implantable medical device for treating arrhythmia. The implantable medical device includes a control unit and, each coupled to the control unit, a sense amplifier, a first switch and a second switch. The sense amplifier includes a polarity selection module, an amplification unit and a filtering unit, which are sequentially connected. The first switch is disposed within the polarity selection module, and the second switch within the filtering unit. The control unit is configured to shield the sense amplifier from interference from a pacing pulse signal by providing multi-stage on/off control over the first and second switches according to a pacing period and a discharging period in a pacing interval.

Abstract: A metal ring for installation as an electrode on a microcable includes an elongated ring having an internal lumen, a middle portion partially collapsed into the internal lumen and adapted to puncture a sheath of the microcable when the middle portion is crimped around the microcable, and two end portions surrounding the middle portion.

Abstract: An implantable cardiac device that detects and protects against strong magnetic fields produced by MRI equipment is disclosed. The device has a magnetic field sensor for detecting the presence of a relatively weak static magnetic field (102, 110, 118, 122) of a level equivalent to that of a permanent magnet in the vicinity of the device. The device is switched from a standard operating mode (100) where the nominal functions of the device are active, to a specific protected MRI mode (114, 116) in the presence of a magnetic static field of a level corresponding to that emitted by MRI equipment. The device further temporarily switches the device from the standard operating mode (100) to an MRI stand-by state (108) when a magnetic field is detected by the magnetic field sensor such that a subsequent detection of a magnetic field switches the device from an MRI stand-by state to the specific protected MRI mode.

Abstract: The disclosure relates to a multipolar, detection/stimulation endovascular lead intended to be implanted in the coronary venous network. The lead comprises a lead body with in proximal portion a connector to a cardiac pacemaker/defibrillator generator, and in a distal portion a first branch and a second branch extending beyond a bifurcation. The distal ends of the branches are free ends carrying an array of electrodes connected to the connector. Each of the branches comprises at its free end an outlet in the distal direction, able to receive an implantation guide wire inserted therein and to guide the implantation guide wire in an axial direction parallel to the main axis of the lead body.

Abstract: This disclosure relates to an implantable probe for electrical stimulation of an organ and/or for detection of electrical potentials on this organ. The probe comprises a distal end able to come into contact with the tissues of the organ, this end comprising an insulating substrate, and at least one conductive interface carried by the substrate. The probe further comprises a probe body having at least one bonding conductor connected to a respective conductive interface. The conductive interface comprises at least one deformable conductive wire, at least partially exposed, with a woven, embroidered, braided or knitted configuration for anchoring the deformable wire to the substrate.

Abstract: An explantation accessory includes a catheter with a steerable head carrying a tubular receptacle adapted to accommodate the proximal portion of the capsule. The explantation accessory further includes a lasso having a flexible wire extending along the catheter to and forming at its distal end a deformable loop. One end of the deformable loop is mobile so as to allow tightening of the loop under the effect of a traction exerted on the flexible wire along the catheter. The free end edge of the tubular receptacle comprises a protruding anterior portion, an axially recessed posterior portion with respect to the anterior portion and located diametrically opposite to the protruding anterior portion, and two beveled edges connecting the protruding anterior portion to the recessed posterior portion.

Abstract: The disclosure relates to a device including a plurality of electrodes for stimulation of both ventricles with application of an atrioventricular delay and of an interventricular delay, a processor configured to multidimensionally measure an interventricular conduction delay, and monitor the evolution of a patient's condition. For the multidimensional measurement of the interventricular conduction delay, the device produces stimulation of one of the ventricles and collects, in the other ventricle, two endocardial electrogram signals on separate respective channels, giving two respective temporal components. Both temporal components are combined in one single parametric 2D characteristic representative of the cardiac cycle, and a comparison is made with reference descriptors for deriving an index representative of the evolution of the patient's condition.

Abstract: In one embodiment, the present application discloses, in part, a balloon catheter assembly comprising: a) a balloon catheter comprising a proximal end, a distal end; and b) a connecting line comprising a proximal end and a distal end, wherein the proximal end comprises a first terminal magnetic connector for forming a water tight connection with the magnetic click connector on the port panel.