8 results about "Phrenic nerve" patented technology

The utility model relates to a multifunctional catheter for superior vena cava triggering focus mapping and phrenic nerve pace-making, which comprises a catheter body and a spiral electrode tip arranged at the far end of the catheter body, and a plurality of pace-making electrode groups are arranged on the spiral electrode tip. The catheter body and the spiral electrode tip are telescopically arranged in the sheath and can extend out of the open end of the sheath; the spiral electrode tip is in a contraction configuration in the sheath, and can be converted to an expansion configuration when extending out of the sheath and extending into a phrenic nerve pace-making area in the superior vena cava; the starting end of the spiral electrode tip is connected with a center mapping catheter coaxial with the catheter body, and a plurality of mapping electrode sets are arranged on the center mapping catheter. Compared with the prior art, the multifunctional catheter has the advantages that the spiral electrode tip can be stably attached to the inner wall of the superior vena cava, and the multifunctional catheter can be matched with a central mapping catheter to map a superior vena cava trigger range while playing a pace-making role.

An implantable medical device for treating breathing disorders such as central sleep apnea wherein stimulation is provided to the phrenic nerve through a transvenous lead system with the stimulation beginning after inspiration to extend the duration of a breath and to hold the diaphragm in a contracted condition.

The invention is entitled "Detecting and mapping phrenic nerve through pacing." The invention relates to an apparatus comprising an interface and a processor. The interface is configured to receive one or more magnetic localization signals from one or more position sensors coupled to one or more body surface patches attached to a body of a patient, the magnetic localization signals being indicative of respective positions of the position sensors. The processor is configured to (i) detect an unintentional stimulation of a phrenic nerve of the patient, the unintentional stimulation occurring due to cardiac pacing applied by an intracardiac electrode in a heart of the patient, (ii) estimate, based on the magnetic localization signals, a motion of one or more of the body surface patches occurring during the detected stimulation of the phrenic nerve, (iii) estimate, based on the estimated motion of the body surface patches, a distance between the pacing electrode and the phrenic nerve, and (iv) send an output derived from the estimated distance to an output device.

The invention provides a system and method for improving sleep breathing disorder based on nerve stimulation, and belongs to the technical field of medical treatment. Comprising a mask for collecting nasopharyngeal airflow, snore and vibration signals; the nerve stimulation module is used for stimulating hypoglossal nerves and phrenic nerves through electric pulses; the fixed flow positive pressure support module is used for providing continuous positive airway pressure ventilation; the multi-source data acquisition module is used for acquiring respiratory movement amplitude data and blood oxygen saturation data; the control unit module comprises a data processing core and a double-closed-loop controller; the data processing core is used for identifying a respiratory event type based on an LSTM model and establishing a stimulation-ventilation response relation matrix; the double-closed-loop controller is used for adjusting the stimulation intensity of the nerve stimulation module in real time. By dynamically adjusting parameters, reducing sequential control errors and realizing multi-signal synchronization, the limitation of single nerve stimulation is effectively solved, and the accuracy and effectiveness of intervention are ensured.

A pleural catheter device (10) includes: a catheter (20) that drains pleural effusion of a subject; an electrode (22) that is provided to the catheter (20) and applies electrical stimulation to a respiratory muscle or a phrenic nerve of the subject; and a controller (32) that performs control of the electrical stimulation by the electrode (22).

A system and methods for stimulating two or more nerves to treat obstructive sleep apnea includes an implantable nerve stimulator (e.g., an implantable pulse generator) with a single current source for generating a time-multiplexed signal. The time-multiplexed signal includes first pulses defined interleaved with second pulses. The first and second pulses are defined by respective sets of pulse parameters stored in memory. The processor controls at least one switch to selectively steer each first pulse to a first nerve and each second pulse to a second nerve. In some examples, the first and second nerves are selected from a group of nerves consisting of the ansa cervicalis, the phrenic nerve, and the hypoglossal nerve.

The invention relates to a lung rehabilitation real-time evaluation system based on EIT parameters, and the system comprises a phrenic nerve-abdominal muscle electrical stimulation module which is used for carrying out the electrical stimulation of phrenic nerves and abdominal muscles of a patient; the electrical impedance tomography equipment is used for monitoring the electrical impedance change of the lung of the patient in real time; the data processing module is used for receiving lung electrical impedance data monitored by the electrical impedance tomography equipment and calculating parameters; the curative effect evaluation module is used for evaluating the lung rehabilitation curative effect according to the calculated parameters; the aging evaluation module is used for evaluating the short-term curative effect and duration of phrenic nerve-abdominal muscle combined electrical stimulation by using EIT parameters; and the early warning module is used for performing early warning according to a set threshold range and a parameter change trend, and performing information feedback on the curative effect module and the aging module according to an early warning level and a real-time state of the patient. The medicine has the advantages that the lung ventilation function of a patient can be effectively improved in the aspect of lung rehabilitation curative effect; in the aspect of lung rehabilitation timeliness, real-time and quantitative evaluation of timeliness characteristics provides a powerful objective tool for accurate implementation and effect evaluation of passive lung rehabilitation.

A stimulation device (10) configured to stimulate the phrenic nerve (220) within the body of a patient (20) includes a coil unit (110) configured to generate a magnetic field (30) and a retainer (120) coupled to the coil unit (110). The retainer (120) is arranged to position the coil unit (110) at the patient's (20) body such that the phrenic nerve (220) can be stimulated by the magnetic field (30) generated by the coil unit (110). The coil unit (110) includes a ferromagnetic core (1110) and a wire (1120) wound around the ferromagnetic core (1110).