摘要:
An implantable apparatus for the early diagnosis of tachycardia in the heart is provided witha microelectrode array, which is in contact with the cardiac muscle tissue, for detecting stimulus conduction potentials in the cardiac muscle tissue,a measuring device, which is in connection with the microelectrode array, for determining the refractory time of the cardiac muscle cells in the monitored cardiac region,a measuring device, which is in connection with the microelectrode array, for determining the stimulus conduction velocity in the monitored cardiac muscle region,a computing device for determining the product value of the refractory time and the stimulus conduction velocity,a comparator for comparing the product value with a tachycardia threshold, any falling short of the tachycardia threshold signaling a condition of the heart in risk of tachycardia,a stimulation arrangement for generating antitachycardia stimulation upon detection of a condition of risk of tachycardia in particular via the microelectrode array, anda control unit for controlling the measuring and evaluation processes within the apparatus.
摘要:
Electrotherapeutic implant for stimulation of body tissue, comprising at least two electrode poles (14) which are connected to electric feeder lines, a demodulation unit (22), at least one electric feeder line (20), which is designed as an antenna and contacts the demodulation unit (22), wherein the implant (10) is fabricated from one piece, can be affixed (16) at the treatment site and is equipped with a biocompatible insulation, whereby the components of the implant (10) are designed so that a therapeutic energy which can be injected from the outside over the antenna (20) during the treatment is delivered to the therapeutic target region without intermediate storage.
摘要:
A guide wire for introducing an implantable electrode line, wherein the electrode line is particular a heart electrode line for intracardial sensing of cardiac actionpotentials and/or for electrical stimulation or defibrillation of the heart, and wherein the guide wire is adapted for interlocking with the electrode line, and wherein the guide wire comprises a deformation, in particular curved, wavy, V-shaped, zig-zag, or trapezoidal, enlarging the effective contact diameter of the guide wire to a value corresponding essentially to the inner diameter of a lumen of the electrode line or greater than this.
摘要:
Electrotherapeutic implant for stimulation of body tissue, comprising at least two electrode poles (14) which are connected to electric feeder lines, a demodulation unit (22), at least one electric feeder line (20), which is designed as an antenna and contacts the demodulation unit (22), wherein the implant (10) is fabricated from one piece, has means (16) for affixing same at the treatment site and is equipped with a biocompatible insulation, whereby the components of the implant (10) are designed so that a therapeutic energy which can be injected from the outside over the antenna (20) during the treatment is delivered to the therapeutic target region without intermediate storage.
摘要:
An implantable medical electrode device, in particular a cardiovascular cardiac pacemaker or defibrillator electrode device, comprises an elongate, tubular electrode body (2), a fixing zone (4) in front of the distal end (3) of the electrode body (2), in which the externally closed peripheral envelope (8) of the electrode body (2) is reversibly expandable into a body lumen (27) for detachable fixing of the electrode device (1), and expansion means, situated in the fixing zone (4), for controlling the expansion and contraction in the fixing zone (4).
摘要:
A catheter for cardiovascular application includes an elongated catheter shank; a lumen inside the catheter shank; a mandrel sleeve that extends in the lumen; a guide wire which runs in the mandrel sleeve and is extendable through a sluice gate out of the catheter at a distal end thereof; and a sealing unit for sealing the lumen, the sealing unit being disposed proximally in front of the sluice gate and reversibly pierced by the replaceable mandrel sleeve.
摘要:
A catheter, in particular for insertion of heart-pacemaker- or ICD-electrodes into a patient's body, comprises a catheter wall and a reinforcement therein for stabilization of the catheter. The reinforcement is a profile element which is adjusted to the desired mechanical properties of the catheter in the axial and peripheral direction thereof.
摘要:
A neural electrode arrangement comprises an elastically deformable carrier body defining a cylindrical internal space therein, and at least one electrode which is fixedly connected to the carrier body and which is in peripherally touchingly operative relationship with the internal space in the carrier body. The electrode is formed from an elongated wire coil.
摘要:
A lead for use in Deep Brain Stimulation (DBS) and similar applications has a rigid lead tip with multiple electrodes thereon. The electrodes are formed by coating a lead tip core with a conductive material; selectively removing the conductive material to define the electrodes and conductive tracks leading therefrom; and then applying a layer of insulating material over the tracks to leave the electrodes exposed. Terminals are also left exposed on the tracks for connection to energy supply and/or data transmission lines. Such lines are preferably provided on or within a flexible lead body connected to the lead tip.
摘要:
A lead for use in Deep Brain Stimulation (DBS) and similar applications has a rigid lead tip with multiple electrodes thereon. The electrodes are formed by coating a lead tip core with a conductive material; selectively removing the conductive material to define the electrodes and conductive tracks leading therefrom; and then applying a layer of insulating material over the tracks to leave the electrodes exposed. Terminals are also left exposed on the tracks for connection to energy supply and/or data transmission lines. Such lines are preferably provided on or within a flexible lead body connected to the lead tip.