摘要:
A biventricular cardiac stimulator has a right-ventricular sensing unit, having or connected to a terminal for a right-ventricular sensing electrode, a left-ventricular sensing unit, having or connected to a terminal for a left-ventricular sensing electrode, and a pacemaker timer, which is connected to the right-ventricular sensing unit and the left-ventricular sensing unit. The cardiac stimulator has a programmable automatic switch, which is effectively connected to the pacemaker timer to switch the pacemaker timer optionally between a primarily right-ventricular control and a primarily left-ventricular control, as well as an evaluation unit, which is effectively connected to the switch and is designed to detect and evaluate at least one stability parameter that is characteristic of the stability of the electrode position of the left-ventricular sensing electrode, whereby the programmable automatic switch is designed to automatically switch the pacemaker timer control as a function of a value of the detected stability parameter.
摘要:
A temperature sensor for detecting heating of at least one electrode pole of a temporarily or permanently implantable electrode line or a similar implant having at least one elongated electrical conductor which is connected to at least one electrode pole. The temperature sensor has an impedance detecting unit or is connected to one and is configured for evaluating an electrode pole impedance detected by the impedance detecting unit in such a manner that the evaluation takes place with respect to a temperature-dependent feature of the electrode impedance. The impedance detecting unit is electrically connected to the at least one electrode pole or is configured and arranged to be electrically connected to the at least one electrode pole.
摘要:
A device and a method for working in the presence of electromagnetic fields, in particular fields occurring in cautery applications. Also relates to a partially implanted medical device (IMD), having a unit for detecting electromagnetic interference fields, at least one control unit, a timer, and a detection unit for electrical measured variables and/or a stimulation unit, at least one electrode line having an electrode at one end which is brought into contact with bodily tissue, and which either extends inside the body and/or is situated on the surface of an implant, wherein when nonphysiological signals and/or electromagnetic interference fields are detected and the unit for electromagnetic interference fields evaluates the detected signals as nonphysiological signals for a first specifiable time period, and/or for a second specified time period the stimulation unit is placed in an asynchronous operating state in which the wearer of the IMD is asynchronously stimulated.
摘要:
A device and a method for handling and withstanding electromagnetic fields, specifically such fields as occur in magnetic resonance tomography examinations (i.e., MRT or MRI). This refers in particular to an IMD that can transmit data and/or parameters to an MRT device.
摘要:
An implantable electrode lead that includes a distal section having at least one electrode for transmitting electrical energy between the electrode lead and its surroundings. The electrode lead includes at least one hydrogel capsule that is thermally coupled to the electrode, the hydrogel capsule having a water-permeable wall that forms a cavity containing a hydrogel having a temperature-dependent swelling capacity, the wall of the hydrogel capsule being designed such that it can adapt to the volume of the hydrogel. Further relates to an electrode lead assembly, in the case of which a guide element is provided for guiding an electrode lead having a hydrogel capsule of this type. Further relates to a hydrogel sensor that comprises a hydrogel capsule of this type. Furthermore, at least one embodiment of the invention relates to methods used to determine the size of the hydrogel capsule for the purpose of determining the temperature of an electrode, or environment, that is thermally coupled to the hydrogel capsule.
摘要:
An operating ability monitoring system that includes a person-dependent acceleration sensor, a telemetry unit, and an evaluation unit, wherein the person-dependent acceleration sensor and the telemetry unit may be worn by and/or implanted in a machine operator and connected to the evaluation unit, and wherein the evaluation unit is configured to receive acceleration values originating from the person-dependent acceleration sensor and sensor values originating from a further sensor that reflects the movements and/or acceleration of a vehicle or moving machine and to evaluate them by comparing the acceleration values from the person-dependent acceleration sensor to the sensor values associated with the vehicle or moving machine.
摘要:
A gas-turbine burner for a gas turbine includes a fuel nozzle 1 having several fuel exit holes 23, which are each connected to a fuel line 5, 7, 29, 30, through which fuel can be passed selectively Between individual fuel exit holes 23, different static pressures of the airflow are provided between fuel lines flown by fuel and fuel lines not flown by fuel.
摘要:
The invention comprises a system and a method for secure remote programming of an implant. For this purpose, a TAN list is generated on the part of the programming device and both stored in the implant (10) and also provided to a physician. The TAN list is preferably indexed and the implant predefines the index of a TAN in each case, which a physician must input to have a programming instruction executed by the implant.
摘要:
An electronic implant is designed to detect at least one technical or physiological patient parameter, and has an exhaustible power source. The electronic implant also has an integrated mobile wireless antenna, a low-current mobile wireless modem with a low maximum transmission power, a low-current mobile wireless field-strength-measuring unit, and a control unit connected to the field-strength-measuring unit and to the mobile wireless modem. The control unit triggers access to a mobile wireless network as a function of the transmission power needed for data transmission by the low-current mobile wireless modem, taking into account a mobile wireless field strength value determined by the field-strength-measuring unit, and also taking into account the urgency of the data content to be transmitted. Network access only occurs when the needed transmission power does not exceed a specific maximum value for the particular urgency.
摘要:
An implantable antitachycardiac cardiac stimulator has at least one right-ventricular sensing unit, a defibrillation shock generator and a control unit, as well as an additional detection unit for detecting ventricular events which operates independently of the right-ventricular detection electrode, and an evaluation unit (e.g., as an additional component of the control unit) which suppresses the delivery of a defibrillation shock on reliable detection of the normal rhythm via the additional detection unit.