61 results about "Implantable cardiac pacemaker" patented technology

Disclosed is a system for detecting an acute myocardial infarction (i.e., a heart attack) at the earliest possible time and promptly warning the patient that he should immediately seek medical care. The present invention includes an implantable electronic system that can sense a change in the patient's electrogram that is indicative of a heart attack. If a heart attack is sensed, the device would then cause an implantable and / or externally located alarm to be actuated to warn the patient of his condition and a medical practitioner at a remote diagnostic center would receive the patient's electrogram for analysis. The patient or a caretaker would then be informed to self-inject medication through a subcutaneous, pass-through drug port that can be a separate device or integrated into the implanted device that is designed for the early detection of a heart attack. Since an implantable heart pacemaker or defibrillator already has within its structure many of the elements required for the device to recognize a heart attack, it would be expeditious to add a capability to these existing devices to detect a heart attack, have a pass-through drug port and provide an implantable and / or external alarm means to inform the patient to take appropriate action.

The invention relates to a functionalized implantable flexible electrode and an application thereof. The functionalized implantable flexible electrode at least comprises a function layer capable of generating a current or voltage. In the invention, through adopting the function layer which can generate the current or the voltage via triggering, the flexible electrode does not need complex line connection and device packaging and the function of a nerve stimulation device can be realized so that an operation risk and the safety risk of long-term implantation are greatly reduced, and the application field of the nerve stimulation device is expanded. The invention also provides the applications of the above functionalized wide-width implantable electrode in manufacturing an implantable artificial retina, an implantable artificial cochlea, an implantable cardiac pacemaker, and an implantable deep brain stimulator.

The invention discloses a remote metering device for implanted cardiac pacemaker and the bi-directional data transmission method. The external master control unit of said remote metering device emits frequency-modulated wave to internal impulsator thorugh carrier frequency oscillator with automatic following and adjusting generated frequency and LC series resonance circuit; the LC series resonance circuit of internal impulsator can receive and emit data, when emitting data, it can emit remote metering data of internal master control unit to switch pipe to change the load of LC parallel resonance circuit, regulates radio-frequency carrier load of external controller through jigger coupling and emits remote metering data got by passing receiving circuit of controller to master control unit of program controller. When the external program controller at work, it can provide current of 1 milliammeter for internal impulsator, which can maintain normal work and bi-directional data transmission when ther is not enough powder in internal battery.

The invention discloses a sensor collection processing system of an implantable cardiac pacemaker and a control method based on the system, and belongs to the technical field of medical appliances. The sensor collection processing system comprises a filtering circuit, an amplification circuit, an analog-to-digital converter and a CPU (central processing unit), wherein analog signals output by an acceleration senor of a pacemaker are transmitted to the amplification circuit after being subjected to filtering by the filtering circuit, the analog signals amplified by the amplification circuit are converted into digital signals through the analog-to-digital converter, the digital signals are input into the CPU through the analog-to-digital converter, the CPU realizes the interaction with the MCU (micro control unit) of the pacemaker, and in addition, the CPU can control the sampling frequency of the analog-to-digital converter through outputting pulse signals at different frequencies. The sensor collection processing system of the implantable cardiac pacemaker and the control method based on the system can ensure that unnecessary power consumption can be reduced through automatically regulating the sampling frequency on the premise of no distortion of the collected moving sensor signals, so the service life of the cardiac pacemaker is effectively prolonged.

The invention discloses a magnetic coupling resonance wireless charging device of an implanted cardiac pacemaker. The device comprises a high-frequency excitation source (10), an emission unit (20), a receiving unit (30), an energy conversion unit (40) and a rechargeable battery; by means of magnetic coupling resonance of a resonance circuit of the emission unit (20) and a resonance circuit of the receiving circuit (30), wireless transmission of electric energy from the emission side to the receiving side is achieved. The energy conversion unit (40) conducts smoothing on the electric energy of the receiving unit (30), and the electric energy required by charging of the rechargeable battery of the cardiac pacemaker is obtained through a battery management chip. The high-frequency excitation source (10) and the emission unit (20) belong to outside components, and the receiving unit (30) and the energy conversion unit (40) belong to inside components. The device charges the rechargeable battery of the implanted cardiac pacemaker in a wireless mode, and therefore service life of the battery is prolonged, and service life of the implanted cardiac pacemaker is prolonged.

A fully implantable cardiac pacemaker system is provided. The pacemaker system includes a pacemaker having an electrode sub-assembly containing an electrode and a base into which the electrode is embedded. It also includes an implantable package that has electronic components for providing electrical pulses to a patient's heart. The pacemaker also has a power supply and a flexible electrically conductive lead that connects the electronic components to the electrode. In addition to the pacemaker, the pacemaker system includes a removable insertion casing that is physically attached to the base portion of the electrode sub-assembly. Upon insertion of the pacemaker into a patient's heart, the pacemaker is detached from the removable insertion casing and deployed fully in the patient's chest. The pacemaker system has particular use in fetal applications.

A method and apparatus for automatically adjusting the sensing threshold of cardiac rhythm management devices. The invention is particularly suited for implementation in devices such as implantable cardiac pacemakers and implantable cardioverter / defibrillators. A method and apparatus are provided in which a noise level and signal level for a sensing channel are determined for each cardiac cycle with the sensing threshold of the channel being adjusted in accordance therewith.

A monitoring device for a patient for predicting a cardiovascular anomaly and a method for operating a monitoring device is provided. Furthermore, an implantable electrotherapy device, such as an implantable cardiac pacemaker, an implantable cardioverter, or an implantable defibrillator, having a monitoring device are also provided. In an embodiment, the monitoring device acquires a value change of a hemodynamic parameter, which occurs as a result of a detected value change of a state parameter, for example, as a result of an activation or deactivation of a cardiac resynchronization therapy. By suitable evaluation of the value change of the hemodynamic parameter, the monitoring device can output an evaluation result signal which is indicative of an imminence of a cardiovascular anomaly, such as a cardiac decompensation, long beforehand and with high specificity.

The invention discloses a low-power-consumption implantation type medical system and a method for lowering the operation power consumption of the medical system and belongs to the field of miniature medical instruments. An in-vivo implantation device of the implantation type medical system has at least three kinds of states which include the dormancy working state, the interception working state and the awakening working state. The system is formed by connecting the in-vivo implantation device and an in-vitro control device in a wireless communication mode, the in-vivo implantation device is in the dormancy working state once powered on, and a first wireless communication module in the dormancy working state is always in an off state; when a doctor needs program control, the state is manually switched through an in-vitro control magnet, so that the in-vivo implantation device enters in the interception working state, and normal communication is performed between the in-vivo implantation device and the in-vitro control device. Extra power consumption is greatly lowered because program control is not needed in most of time, the service life of the product is prolonged, extensive use is achieved, and the low-power-consumption implantation type medical system can be used for an implantation type cardiac pacemaker, a defibrillator, a nerve stimulator, a muscle stimulator, an electrocardiogram recorder, a medicine pump and others and has extremely high economic benefits and social benefits.

The invention discloses a power adjustable wireless charging device applied in an implantable cardiac pacemaker. The power adjustable wireless charging device applied in the implantable cardiac pacemaker comprises a transmitting terminal and a receiving terminal, wherein the transmitting terminal comprises a power adjusting unit, a transmitting coil, a transformer, a control circuit, a drive circuit and a first frequency changer circuit; the power adjusting unit is used for adjusting transmitting power of electromagnetic energy of the transmitting coil; the receiving terminal comprises a receiving coil, a second frequency changer circuit, a rectification filter circuit and a power monitoring circuit; and the power monitoring circuit interacts information with a program controller through a radio frequency identification communication module. The transmitting power of the transmitting coil can be adjusted through the power adjusting unit. According to the power adjustable wireless charging device applied in the implantable cardiac pacemaker, the transmitting power of the transmitting coil can be adjusted through the power adjusting unit, the power consumption and the charging condition of a battery of the cardiac pacemaker can be monitored in real time through the power monitoring circuit, and the power adjustable wireless charging device is applied to wireless charging of the cardiac pacemaker.

The invention discloses a wireless charging and body temperature monitoring system for an implantable heart pacemaker, which realizes wireless charging of the implantable heart pacemaker through a magnetic coupling resonance wireless power transmission technology. The system carries out energy transmission by adopting the coupling of two coils, wherein the transmitting coil adopts a rounded-cornerrectangular coil structure and is placed outside the body, and the coil is wound by adopting a copper stranded wire and provided with a ferrite strip; the coil in the body is implemented by adoptinga flexible printed circuit board; and the impedance matching of the transmitting coil adopts LCC compensation topology including an inductor and two capacitors, and the receiving coil is only connected with one capacitor in series to achieve the same resonant frequency. The heart pacemaker is internally provided with an SAW (Surface Acoustic Wave) temperature detection module, and transmits temperature information outside the body by means of wireless transmission. The receiving coil of the wireless charging and body temperature monitoring system is fixed on a housing of the heart pacemaker, the thickness is thin, the number of used electronic components is small, the occupied space is small, the temperature can be checked in real time during the charging period so as to ensure the safety,and the system is applicable to implantable medical electronic equipment.

The present invention discloses a method for eliminating atrial far-field signals in ventricular channels for an implantable cardiac pacemaker. The method includes the following steps that: 1) if atrial and ventricular sensing events occur simultaneously in an atrial and ventricular sensing window in a VA interval, the following processing is carried out: 1, if a VV interval is larger than 300ms, current ventricular sensing is ignored, a 100ms safety AV interval is enabled, and 2, if the VV interval is smaller than or equal to 300ms, atrial and ventricular sensing is caused by T waves, and atrial sensing and ventricular sensing are simultaneously ignored, and a 100ms atrial and ventricular absolute refractory period is enabled; and 2) in the AV interval of the atrial sensing, a 50ms long-field signal detection window is enabled, if a ventricular sensing event is detected in the window, and current ventricular sensing is ignored, and a 100ms safety AV interval is enabled, ventricular safety pacing is realized at the tail end of a ventricular sensing window. With the method of the invention adopted, the suppression of ventricular pacing pulses caused by cross sensing can be avoided, and therefore, the life of a patient having atrioventricular block can be effectively protected.

The invention discloses a method for eliminating a high-frequency interference of an implantable cardiac pacemaker AV interval inner ventricle. After an atrial pacemaking event, a ventricular channel immediately starts a ventricular blanking period PAVB. During the period, the ventricle channel does not perceive any electric signals. In the invention, after the PAVB is ended, a segment of ventricle interference detection window is set; and in the window, the ventricular channel can perceive an input electric signal and a pacemaking time sequence is not influenced. If continuous high-frequency interference signals are generated in the ventricle channel and one interference signal can not be perceived by the ventricle because the signal is in the PAVB, the next interference signal may be in the set interference detection window, ventricle perception in the detection window is considered to be ventricle refractory period perception and refractory period extension is triggered. If the ventricle perception is detected in a refractory period of the extension, a new extended refractory period is immediately started. After an AV interval is ended, a ventricle pacemaking pulse VP is provided.

The invention relates to an implantable heart pacemaker packaging device. The packaging device comprises a packaging mould, a sealing plug cavity forming mould, a positioning rod for fixing the sealing plug cavity forming mould and an electrode positioning mandrel for forming a pace-making electrode cavity and for controlling and determining a position of an electrode square block, wherein a titanium shell holding cavity, a top cover forming cavity, a positioning rod connection hole, an electrode positioning mandrel connection hole, a feeding port and a vent port are arranged inside the packaging mould. Since the packaging device is ingeniously adopted, the top cover forming an implantable heart pacemaker is packaged to the top part of a titanium shell through a filling and sealing way, not only easiness in filling and sealing is achieved, but also positions of all parts forming the packaging device are relatively stable and accurately positioned; and meanwhile, a reasonable packaging method is adopted, so that the material forming the top cover is free from having the problems such as volume variation, bubbles and the like during the entire solidification process, the stability of the shape and the size of the top cover and cavities on the top cover can be guaranteed, and the strength, transparency performance and completion of the top cover also can be guaranteed.

The invention discloses a method for obtaining the ventricular pacing threshold of an implantable cardiac pacemaker, which comprises the following steps: 1) switching the pacemaker from a current modeto a VDI mode, and then collecting VV intervals and corresponding AS-VS interval value, and then according to the VV interval and its corresponding AS-The mean ventricular rate and the mean atherosclerosis rate were calculated by VS interval. VS interval; 2) set that frequency of ventricular test pulse to mean ventricular rate + 10bpm, and set the t mask window after AS event to mean AS-VS interval + 50ms; 3) that t pulse VP is discharged accord to the average ventricular rate +10 bpm, the ER wave is acquire, The ventricular pacing threshold of the implantable cardiac pacemaker is confirmed by the collected ER wave. During this period, when the ventricular test pulse appears in the test shield window, the interval pause threshold test is performed, and the pulse amplitude is set as the programmable amplitude. The method can obtain the ventricular pacing threshold of the implantable cardiac pacemaker more accurately.

The invention discloses an implantable pacemaker. The pacemaker comprises a pacemaker shell and an assembly seat, wherein the assembly seat is arranged on the outer wall at the upper end of the rightmost side of the pacemaker shell; a connecting block is connected to the left end of the assembly seat; the connecting block and the assembly seat are fixedly connected by virtue of a binding material. Two novel buffer reinforcing devices are increased in opposite directions of a pulse generator and a built-in battery of the implantable pacemaker, and additional six novel buffer reinforcing devices are respectively increased between the pulse generator and the inner walls of the pacemaker shell and between the built-in battery and the inner walls of the pacemaker shell, and the pulse generator and the built-in battery inside the pacemaker shell are fixedly connected by virtue of the novel buffer protection device, so that the previous conditions can be effectively avoided. Therefore, the whole implantable pacemaker is efficient and safe to use, and the service life of the whole implantable pacemaker can be prolonged.

An implantable cardiac pacemaker with automatic control of the connection of a probe and the implantation of the case. The device includes a generator and its energy source. The generator includes: circuits for scanning battery consumption, able to measure current output by the battery and to deliver a measured value of the output current; comparator circuits, able to compare the current value measured with a pre-programmed value of threshold of current. It includes moreover circuits suited to: detect and count the spontaneous depolarizations collected between the aforementioned terminals of the head of connector; to compare the number of depolarizations thus counted with a pre-programmed threshold of counting; and to deliver a signal of suspicion of implantation in the event of crossing of this threshold of counting.

The invention discloses an integrated positive and negative electrode connection structure of an implantable cardiac pacemaker, which includes an elastic member, a jacket and a sealing ring. The two ports are sealed with ring seals. The device can not only provide reliable contact (clamping force) with the electrode plug and as small insertion and extraction force as possible, but also can provide pacemaker for the implantable heart pacemaker when the epoxy top of the implantable cardiac pacemaker is made. The positive and negative connectors of the device provide a reliable sealing environment to ensure that the performance of the main functional part of the connector is intact, and the structure is simple and easy to process, which further reduces the processing cost.

The invention discloses a wireless charging system of an implantable cardiac pacemaker and an operation method thereof capable of automatically performing energy detection. The system at least comprises a wireless charge emission module arranged at the outer portion of a body, and a charge circuit control module, a plurality of wireless charge receiving modules, a plurality of battery modules andan alarm module which are arranged in the body; the plurality of signal output ends of the charge circuit control module are respectively correspondingly connected with the signal ends of the corresponding wireless charge receiving modules, according to the working condition demands, the working states of the corresponding wireless charge receiving modules are selectively opened and closed; the other signal ends of the wireless charge receiving modules are connected with the signal input end of the alarm module to perform alarm when any one battery module is lower than a set lowest electric quantity value; the other signal ends of the wireless charge receiving modules are respectively bilaterally and correspondingly connected with the other signal ends of the battery modules to receive electric quantity information of the battery modules and send a charge command to the battery modules having the electric quantity values lower than the set lowest electric quantity value so as to ensurethat at least one battery module reaches the set lowest electric quantity value.

The invention relates to the technical field of medical instruments, and discloses an implantable cardiac pacemaker which comprises a pacemaker shell and a connector, the connector is installed on the outer wall of the upper end of the pacemaker shell, the left end of the connector is connected with a connecting terminal, and the connecting terminal and the connector are fixedly connected through biological glue. According to the implantable cardiac pacemaker, by adding the AI module, adaptive adjustment is carried out on differences of different individuals, the implantable cardiac pacemaker has growth performance, output signals can be intelligently adjusted according to physiological activity habits of the individuals, and the problem that a traditional implantable cardiac pacemaker cannot adapt to different electrocardiosignals generated in the whole life cycle activity of the individuals and cannot send out optimal pulse signals is solved; besides, the flexible bendable line type lithium ion battery is adopted so that the power supply capacity is improved, the size of the pacemaker can be reduced, and the problems of discomfort, high probability of collision and damage and the like caused by implantation are solved.

The invention relates to an implantable heart pacemaker packaging device. The packaging device comprises a packaging mould, a sealing plug cavity forming mould, a positioning rod for fixing the sealing plug cavity forming mould and an electrode positioning mandrel for forming a pace-making electrode cavity and for controlling and determining a position of an electrode square block, wherein a titanium shell holding cavity, a top cover forming cavity, a positioning rod connection hole, an electrode positioning mandrel connection hole, a feeding port and a vent port are arranged inside the packaging mould. Since the packaging device is ingeniously adopted, the top cover forming an implantable heart pacemaker is packaged to the top part of a titanium shell through a filling and sealing way, not only easiness in filling and sealing is achieved, but also positions of all parts forming the packaging device are relatively stable and accurately positioned; and meanwhile, a reasonable packaging method is adopted, so that the material forming the top cover is free from having the problems such as volume variation, bubbles and the like during the entire solidification process, the stability of the shape and the size of the top cover and cavities on the top cover can be guaranteed, and the strength, transparency performance and completion of the top cover also can be guaranteed.

The invention discloses a device special for incision compression of an implantable cardiac pacemaker. The device includes a chest strap, a traction head is fixedly mounted at one end of the chest strap, a fixing seat is fixedly mounted on the outer side of the chest strap and provided with a fixing hole, one end of the chest strap passes through the fixing hole, one side of the fixing seat is provided with a rotating hole, the rotating hole is communicated with the fixing hole, a screw is rotatably mounted in the rotating hole, one end of the screw extends into the rotating hole and is in contact with the chest strap, the other end of the screw extends to the outer side of the fixing seat, a rotating block is fixedly mounted at the other end of the screw, a sliding seat is slidably mounted on the chest strap, and a sandbag is fixedly mounted at the top of the sliding seat. The device facilities the fixation of the position of the sandbag, protects the position of the sandbag from deviation, facilities the adjustment of the positions of the sandbag and a shoulder girdle, facilities the adjustment of the looseness of the chest strap, meets use requirements of different groups of people, improves use flexibility, and is simple in structure and convenient to use.

The invention discloses a hop-by-hop monitoring system and method for an implantable cardiac pacemaker. A ventricular pacing circuit unit is electrically connected with a hop-by-hop monitoring unit; the hop-by-hop monitoring unit is electrically connected with a standby pulse monitoring unit and used for collecting ER waves generated by Vp and judging and outputting the capture / capture loss stateof the Vp; the standby pulse monitoring unit is electrically connected with the ventricular pacing circuit unit and used for triggering the ventricular pacing circuit unit to send out ventricular standby pulses Vp(B) after sending out ventricular pacing pulses Vp when the ER waves of the Vp are in the capture loss state, collecting ER waves of the Vp(B), judging and outputting the capture / captureloss state of the Vp(B) and prolonging the AV interval when the Vp(B) is in the capture loss state; and a ventricular threshold value searching unit is electrically connected with the standby pulse monitoring unit and used for triggering the ventricular threshold value searching unit when the Vp(B) is in the capture loss state to obtain a ventricular pacing threshold value and reset ventricular pacing output.

The invention discloses a loop antenna applied to the wireless charging of an implantable cardiac pacemaker. The loop antenna comprises an in-vitro planar loop antenna and an in-vivo planar loop antenna. The in-vivo planar loop antenna is arranged in a body. The in-vitro planar loop antenna is arranged on the in-vitro skin. The in-vitro planar loop antenna comprises an in-vitro antenna substrate,an in-vitro loop radiation patch, paired connection radiation patches and a chip capacitor. The in-vitro loop radiation patch is arranged on the in-vitro antenna substrate. The loop radiation patch isprovided with at least one in-vitro radiation patch notch. The chip capacitor is arranged at the in-vitro radiation patch notch. The in-vitro loop radiation patch and the paired connection radiationpatches form a complete loop. The in-vitro loop radiation patch, the paired connection radiation patches and the chip capacitor are all arranged on the same surface of the in-vitro antenna substrate.According to the invention, the planar loop multi-loop wireless transmission antenna is adopted, so that the area of the antenna is reduced. The chip capacitor is introduced, so that the energy transmission efficiency is improved.

The invention discloses a wireless charging system of a cardiac pacemaker. The wireless charging device is used for battery charging of an implantable cardiac pacemaker and comprises a radio frequency transmitter and an energy receiver, wherein the radio frequency transmitter comprises a transmitting source module which is composed of a phased array module and a CPU management module and is used for generating radio frequency waveforms, and a transmitting antenna module which consists of a circular polarization rectangular antenna array and a positioning receiver and is used for transmitting and focusing radio waves; and the energy receiver comprises a receiving antenna module consisting of a positioning transmitter and a receiving antenna, and is used for positioning the direction of the energy receiver and receiving radio waves. The charging problem of the cardiac pacemaker is solved through the radio frequency wireless charging technology, the cardiac pacemaker does not need to be replaced through an operation, accurate focusing charging is not needed, the system has a tracking and positioning function, the operation risk of a patient is reduced, and the charging flexibility is greatly improved.

Disclosed is an implantable cardiac pacemaker connector sealing structure. An inverted-T shaped cylinder sealing cavity is formed above a mounting hole of a connector of the implantable cardiac pacemaker connector sealing structure. Besides, the small end inner diameter of the sealing cavity is larger than the inner diameter of the mounting hole of the connector. An inverted-T shaped cylinder sealing plug is installed in the cylinder sealing cavity, and the small end outer diameter of the cylinder sealing plug is slightly larger than the small end inner diameter of the sealing cavity, so thatthe small end of the cylinder sealing plug seals the small end of the cylinder sealing cavity. The large end of the cylinder sealing plug is embedded into the large end of the cylinder sealing cavityto achieve positioning. According to the implantable cardiac pacemaker connector sealing structure, a cylinder cavity structure of which the upper end is small and the lower end is large is adopted, so that not only is the sealing performance ensured, but also it is ensured that the sealing plug is not likely to move or fall off because a torque spanner is inserted in or pulled out, and the sealing requirements of the implantable cardiac pacemaker are met.

The invention discloses an incision protection device of an implanted type cardiac pacemaker. The device includes a pressing air bag and a reel; the surface of the pressing air bag is connected with aplurality of sets of connection belts, the tail ends of the connection belts are connected with a wind-up roll, the two ends of the wind-up roll are connected with telescopic rods, the diameter of the telescopic rods is larger than the diameter of the wind-up roll, the two ends of each telescopic rod are vertically connected with plastic rods through connection rods, the surface of the reel is provided with a plurality of placement grooves, and each placement groove includes a connection section and fixation sections, wherein the fixation sections are arranged at the two ends of each connection section; the bottom surface of the reel is provided with a plurality of air vents, and the side face of the pressing air bag is provided with a plurality of micro air cushions. The device not onlycan suitably adjust the pressure according to the requirement, but also can be convenient to fix when the protection is conducted, no obvious constraint feeling is generated after fixation, and the rapid recovery of patients is facilitated.