74 results about "Chest leads" patented technology

An ECG system is used in ECG signal measurement of intra-cardiac ECG using a catheter. The system includes a lead signal switch for disconnecting an amplifier input terminal from a reference point and reconnecting the input terminal to a patient limb electrode. An ECG signal processor amplifies the difference of a chest lead signal electronically connected to a catheter, and a patient limb signal provided by the reconnecting of the input terminal.

A portable lead alignment device is provided for aligning, organizing and storing in a pre-assembled fashion the leads extending from an EKG apparatus. The device includes an elongate flexible support with at least one linear array of chest lead alignment tunnels disposed thereon. Each tunnel snugly accommodates a chest lead so that the lead can be slid longitudinally relative to the support. However, the tunnels prevent the leads from being separated from the device. The lead alignment device may further include a plurality of ground lead organizers for releasably retaining the ground leads in a neat looped arrangement on the support.

The invention provides an electrocardiosignal construction method based on pulse wave signals. The method comprises the following steps: performing normalization processing of pulse wave signals and electrocardiosignals, which are segmented periodically, by means of scale transformation, fitting the pulse wave signals and the electrocardiosignals by adopting a cubic b-spline curve, and extracting characteristic parameters, transforming the characteristic parameters by a principal component analysis method to obtain the principal components of the signals; performing sample training of the principal components of the pulse wave signals and the electrocardiosignals by adopting a BP neural network to obtain model parameters, and constructing a forecasting model; and constructing electrocardiosignal parameters through the model by utilizing the pulse wave signals and the network model parameters. Experiments show that the method provided by the invention has favorable algorithm performance and constructed electrocardiosignals have small distortion. According to the method, the electrocardiosignals are constructed according to pulse waves through a portable waist type pulse detector, the use of chest leads are avoided, and the improvement in portability of an electrocardiograph is facilitated.

Provided is a standard 12-lead ecg signal reconstruction method. Limb lead signals are reconstructed through formula computing, chest lead signals are reconstructed through a nonlinear method of a BP neural network optimized based on a genetic algorithm; according to the nonlinear method, firstly, the optimal initial weight value and threshold value solution space of the BP neural network is looked for through a genetic algorithm, and serves initial setting of the BP neural network; next, the lead signals used for reconstruction serve as input of the BP network, reconstruction target lead serves as output for training, a known lead set is input into a trained network, and an unknown lead construction result can be obtained. The standard 12-lead ecg signal reconstruction method is high in accuracy.

The invention relates to the medical field and specifically relates to a method for correcting electrocardiographic lead misconnection. The method introduces a concept of an electrode displacement matrix and combines lead data calculation manners in different lead systems to map data generated from the misconnection into correct lead connection data. The method for correcting the electrocardiographic lead misconnection provided by the invention can be applicable to different complicated misconnection manners in multiple lead systems (such as Wilson, EASI, 15 leads and 18 leads), solves problems such as the misconnection between a chest lead and limb leads which cannot be dealt with by current methods, and plays an important role in increasing doctors' working efficiency and relieving doctor-patient relations in actual clinical applications.

Four first electrodes are attached on the vicinity of a lower right end of a right clavicle, the vicinity of a lower left end of a left clavicle, the vicinity of a position on a right anterior axillary line at the level of a right lowermost rib, a the vicinity of a position on a left anterior axillary line at the level of a left lowermost rib of a living body, so as to correspond to limb leads of a standard 12-lead electrocardiogram (ECG). Two second electrodes are attached on such positions of the living body that correspond to a lead V2 and a lead V4 of chest leads of the standard 12-lead ECG. A first ECG data set corresponding to leads I and II of the standard 12-lead EGG with the first electrodes. A second ECG data set including the leads V2 and V4 with the second electrodes. An instantaneous electromotive force vector (a heart vector) is calculated based on the first and second ECG data sets, and predetermined first lead vectors of the leads I, II, V2 and V4. A third ECG data set including leads V1, V3, V5 and V6 of the chest leads is calculated based on the heart vector-and predetermined second lead vectors of the leads V1, V3, V5 and V6. A fourth EGG data set corresponding to leads III, aVR, aVL and aVF of the standard 12-lead EGG based on the first ECG data set The standard 12-lead EGG is derived based on the first to fourth ECG data sets.

The invention provides an electrocardiogram analysis report, an electrocardiogram analysis apparatus, and an electrocardiogram analysis program which displays electrocardiogram waveform and measurement value and easily master heart diseases. The electrocardiogram analysis report simultaneously displays an electrocardiogram waveform and information about a measurement value calculated from the electrocardiogram waveform. The report includes a frontal plane display region (4) configured to display a limb leads waveform and information about a measurement value calculated from the limb leads waveform, and a horizontal plane display region (5) configured to display a chest lead waveform and information about a measurement value calculated from the chest lead waveform, wherein the information about the measurement value is displayed at a position spaced apart by a distance corresponding to a size of the measurement value in a direction from a predetermined center point to the relevant lead waveform in both the frontal and the horizontal plane display regions.

In order to derive a standard 12-lead electrocardiogram, ones of limb leads and chest leads which constitute a lead system for the standard 12-lead electrocardiogram using 10 electrodes are selected. Electrocardiographic waveforms corresponding to the selected ones of the limb leads and the chest leads are obtained, as measured electrocardiographic waveforms, with electrodes attached on a living body. Electrocardiographic waveforms corresponding to a remaining ones of the limb leads and the chest leads are calculated, as non-measured electrocardiographic waveforms, with a prescribed transformation matrix and the measured electrocardiographic waveforms.

In one type of ECG monitoring and analysis system, electrodes are placed on the human body to detect the electrical activity of the heart, and the electrodes are arranged in such a way that FrankX, Y, and Z leads can be formed according to the detected electrical activity. An ECG signal conversion network for providing FrankX, Y, Z leads, including an input terminal, which only performs a set of input signals corresponding to the induced chest leads dV1, dV2, dV3, dV4, dV5 and dV6 In response, a memory for storing transformation matrix coefficients and an output terminal for providing an output signal corresponding to the application of said transformation matrix coefficients to said input signal, said output signal corresponding to said Frank X, Y and Z derivatives couplet. The present invention reduces the bandwidth requirements of the ECG signal communication network and reduces the complexity of the processing required to construct the Frank leads.

The embodiment of the invention relates to a method for simulating and rebuilding ECG lead data based on neural network algorithm, which comprises the following steps: obtaining ECG monitoring data ofthe monitored person; the ECG monitoring data comprises the lead data of at least one limb lead and the lead data of at least one chest lead; a multi-neural network regression prediction model is trained for the reconstruction of multi-lead ECG signals based on the neural network machine learning algorithm; the independent variable of the multi-neural network regression prediction model is the lead data of at least one limb lead and the lead data of at least one chest lead; the dependent variable is the lead data of the remaining unknown leads except at least one limb lead and at least one chest lead; the multi-neural network regression prediction model comprises a weight coefficient and a bias coefficient, and the weight coefficient and the bias coefficient are determined by the resultsof the training of the neural network machine learning algorithm; the lead data of the remaining unknown leads is predicted according to the weight coefficient and the bias coefficient obtained by thetraining.

The invention provides an infant regulative CT examination protecting cover which is provided with a back plate for an infant to lie on. A first sliding way is arranged on the position corresponding to the part from the chest to the legs of the infant on the inner layer of the back plate. A chest lead plate and a belly lead plate of the inner layer of the back plate slide in the length direction of the back plate in the first sliding way respectively. Second sliding ways which are parallel to the first sliding way are arranged on the two sides of the back plate corresponding to the part from the chest to the legs of the infant. An arch-shaped chest protecting cover and an arch-shaped belly protecting cover are arranged in the second sliding ways in a sliding mode though the two ends respectively. During using, by flexibly adjusting the positions of the chest protecting cover, the belly protecting cover and the corresponding lead plates, the head or the chest or the belly of the infant can be selectively subjected to CT examination.

The invention provides a mobile phone capable of realizing multi-lead ECG (electrocardiogram) examination and ECG monitoring. Part of a body of the mobile phone is taken as a negative electrode (1), and part of the bottom is a positive electrode (2). The right hand holds the mobile phone, the bottom electrode is contacted with a detection point to collect ECG data, and a complete lead system-righthand lead ECG is formed; a complete conventional standard lead ECG can be derived by calculation. Three limb leads of three lead types are connected to the corresponding positions, the mobile phone is held by the right hand, the bottom electrode is placed at chest lead detection points respectively, and a standard lead ECG can be collected by only three leads with the method. The ECG data collection required by one complete lead system is completed by the mobile phone with only two electrodes for the first time, and the data can be directly analyzed or converted into the standard lead ECG foranalysis. The leads can be adopted for ECG examination, ECG monitoring or remote ECG monitoring. The demand of a patient for ECG and ECG monitoring anytime and anywhere is met.

The system provides a Graphical User Interface which automatically updates labels associated with waveform information in multiple different windows within an individual image and in different images for use in a medical information telemetry system in synthesis and non-synthesis modes. A user interface display system for use in ECG signal management includes a display generator for generating at least one display image enabling assignment of two measured ECG chest lead signals to any two signals of the six ECG chest lead signals of a conventional 12 lead ECG signal set. A command processor automatically updates labels associated with the six ECG chest lead signals displayed in a display image to be compatible with the assignment of the two measured ECG chest lead signals in response to an assignment command made via the at least one display image.

The invention discloses a fetal electrocardiogram orthorhombic lead system, which comprises a chest lead electrode V1, three abdomen lead electrodes P1, P2 and P3, a public common terminal electrode COM and a grounding electrode GND, wherein the abdomen lead electrodes P1, P2 and P3 are arranged at an uterine orifice; the common public terminal electrode COM is arranged at the bottom of a uterus; and the grounding electrode GND is arranged a lowermost rib below a right armpit middle line. Due to the adoption of the orthorhombic lead system, clean fetal electrocardiosignals are obtained; and an orthorhombic lead plane is utilized, so that interference is reduced greatly, and the detectable rate of fetal electrocardiograms is increased.

The invention discloses a cardiac electric axis and clockwise transposition measuring tray which comprises a measuring tray main body, wherein a frontal plane six-axis system is arranged on the front surface of the measuring tray main body and comprises six limb leads; a rotatable indicator for measuring the cardiac electric axis is arranged in the middle of the measuring tray main body; a clockwise transposition pattern is arranged on the back surface of the measuring tray main body and comprises sixteen chest leads surrounding the heart; and marks are arranged among the six limb leads. The cardiac electric axis and clockwise transposition measuring tray has the advantages that two types of contents are skillfully combined together, the twenty-two leads clinically used are shown in a mould, and the frontal plane, the horizontal plane and the leads are also shown, which assists students in better understanding and mastering the electrocardiology principle in the learning process of electrocardio basic knowledge.

The invention relates to the technical field of medical apparatuses and instruments, in particular to a novel electrocardiograph lead structure. The structure comprises a chest lead belt, wherein thechest lead belt is bonded to the left chest of the human body, and the right end of the chest lead belt is connected with a lead wire; the chest lead belt is connected with a connector through the lead wire, and the connector is connected with an electrocardiograph through a lead wire which is arranged at the right end of the connector. According to the novel electrocardiograph lead wires, througharrangement of the chest lead belt, a double upper-limb lead part, a double lower-limb lead part, a right chest lead belt and a left rear chest wall lead belt, the number of the lead wires is reduced, the situation that the lead wires are likely to be wound and difficult to sort during use is avoided, the workload of medical staff is reduced, and the result diagnosis time is shortened. By arranging water storage balls and fiber bundles arranged in an octopus-shaped rubber plug and the octopus-shaped rubber plug, the suction capacity of the octopus-shaped rubber plug can be enhanced, the falling condition is reduced, the accuracy of an inspection result is ensured, the practicability is high, and application and popularization are facilitated.

The invention relates to the technical field of medical appliances and specifically relates to a hand-held ECG detection device and an ECG detection system with the same. The device comprises a shell body, a circuit board connected in the shell body, and electrodes connected to the shell body, wherein the electrodes are connected to the circuit board; the electrodes comprise an upper limb lead electrode, a chest lead electrode, a left rib lead electrode and a lower limb lead electrode. The device also comprises a terminal equipment support, wherein the terminal equipment support is connected to the side of the shell body opposite to a human body; one end of the terminal equipment support is in rotatable connection with the shell body, and the other end is in clamped connection with the shell body; and the terminal equipment support conducts reciprocating motion between a spreading position and a retracting position. The hand-held ECG detection device and the ECG detection system with the same provided by the invention have the advantages that the hand-held ECG detection device has rational structural design; ECG signals are collected accurately; users' operations are convenient; the device and system are applicable to home-use and first-aid scenes; the ECG signals can be acquired effectively and displayed in real time; and benefits can be brought to patients with cardiovascular diseases.

A system provides synthesized chest lead signals of a conventional 12 lead electrocardiogram (ECG) signal set. The system adaptively derives ECG chest lead signals for a plurality of the six ECG chest lead signals of a conventional 12 lead ECG signal set. The system includes an input processor for receiving data comprising two measured ECG chest lead signals comprising a particular two of the six ECG chest lead signals of a conventional 12 lead ECG signal set and receiving associated information identifying the particular two signals of the six ECG chest lead signals. A data processor in the system uses the information identifying the particular two signals of the six ECG chest lead signals for identifying and selecting coefficients from a plurality of stored coefficients and applying a transformation using the selected coefficients to the data comprising the two measured ECG chest lead signals to derive data representing a plurality of non-measured ECG chest lead signals. An output processor processes the data representing the plurality of non-measured ECG chest lead signals for output. The selected coefficients are patient non-specific.

The invention discloses an electrocardiogram chest lead wire combing device which comprises a lead wire and a lead electrode. The lead wire combing device is a board, six holes matched with six lead wire plugs are formed in the board, and a lead wire board is fixedly arranged on a support connected with an electrocardiogram bed. V1, V2, V3, V4, V5 and V6 signs are respectively arranged on the board outside the lead wire holes. The lead electrode for a left rear back is a plate electrode, and holes matched with the plugs on the end of the lead wire are formed in the end of the plate electrode. Compared with the prior art, the electrocardiogram chest lead wire combing device has the obvious advantages that the lead wire does not wind and the electrode arrangement positions are difficult to make mistake.

The invention relates to the technical field of a medical appliance, in particular to a handheld electrocardiograph detection device and an electrocardiograph detection system comprising the same. The handheld electrocardiograph detection device comprises a casing, a circuit board and an electrode, wherein the circuit board is connected in the casing; the electrode is connected onto the casing; the electrode and the circuit board are connected; the electrode comprises an upper limb lead electrode, a chest lead electrode, a left rib lead electrode and a lower limb lead electrode; the casing comprises a first electrode fixing element and a second electrode fixing element; the chest lead electrode and the lower limb lead electrode are connected at one side, facing the human body, of the first electrode fixing element; the left rib lead electrode is connected at one side, facing the human body, of the second electrode fixing element; and an accommodating groove is formed in one side, facing the human body, of the first electrode fixing element. The invention provides the handheld electrocardiograph detection device and the electrocardiograph detection system comprising the handheld electrocardiograph detection device. The appearance is small and ingenious; convenience and high speed are realized; the use is more convenient; the electrocardiosignal collection is accurate; and the operation by a user is simple.

The invention relates to the technical field of medical supplies, in particular to an electrocardiogram chest lead electrode fixing device and an application method thereof. The lead elastic net beltis of an elastic net structure and can extend in all directions to be adjusted, so that the chest lead is pressed and fixed by the elastic force of the lead elastic net belt to be fixedly located at the detected part of a detected person, thus avoiding the problems of disengagement, movement and deviation. The high elasticity arranged in the middle of the lead elastic mesh belt can enable the chest lead to be pressed and attached to a detected part more stably, and the stretching elasticity of the lead elastic mesh belt is reduced to avoid other parts of the detected person from being tightened and pressed by the lead elastic mesh belt to be injured. Six chest leads pass through the lead elastic mesh belt and the reinforcing elastic strip, so that the electrode placement time of the chestleads can be greatly shortened, and the detection efficiency is improved.