14 results about "Cardiac pressures" patented technology

The invention relates to the technical field of physiological parameter monitoring, in particular to a construction method of a cardiology rehabilitation evaluation model, which comprises the following steps: monitoring a systolic pressure peak value, a diastolic pressure valley value and duration time of a postoperative patient, constructing a waveform parameter set, calculating a peak sequence amplitude change rate through a moving average method, and calculating a peak sequence amplitude change rate. Marking a form abnormal period and a structure drift region; dividing an active phase and a passive phase to extract wave crest characteristics; analyzing time sequence difference to generate a three-dimensional rhythm vector; constructing a regression model; according to the method, heart pressure change is continuously monitored, a waveform structure is identified, compression period change is dynamically captured, a structure drift area is determined and positioned by combining an amplitude change rate and a difference value, multi-dimensional heart rhythm characteristics are extracted, day and night differences are analyzed, and multi-day deviation values are integrated to generate a scoring system; the abnormal recognition, rhythm quantification and trend prediction capabilities are improved, and a high-adaptability quantification basis is provided for rehabilitation evaluation.

The disclosure provides systems, methods, and non-transitory computer readable media for non-invasively assessing cardiac pressure and efficiency. An example computer implemented method includes: receiving patient-specific image data of a cardiac chamber of a patient, the patient-specific image data acquired from an imaging modality over a cardiac cycle; receiving patient-specific vitals data; deriving non-invasive cardiac parameters from the patient-specific image data and the patient-specific vitals data; applying the non-invasive cardiac parameters to a trained model to generate: a total energy output for blood flow out of the cardiac chamber during the cardiac cycle, and a total energy input for blood flow into the cardiac chamber during the cardiac cycle; and generating, in real time, based on a ratio of the total energy output to the total energy input, a patient-specific cardiac efficiency value for the cardiac chamber, the patient-specific cardiac efficiency value classifying a severity of a heart disease of the patient.

The invention relates to the field of traditional Chinese medicines, in particular to a preparation method of an Anqi flat-pressing capsule which comprises the following components in parts by weight: 6-7 parts of astragalus membranaceus, 6-7 parts of codonopsis pilosula, 4g of salvia miltiorrhiza, 5-6 parts of cortex moutan, 5-6 parts of malt, 5-6 parts of hawthorn, 3-4 parts of scutellaria baicalensis, 3-4 parts of radix bupleuri, 2.5 g of diazepam, 1-2 parts of nimodipine and 2-3 parts of radix isatidis. The capsule has the effects of nourishing heart, stabilizing mind, promoting blood circulation to remove blood stasis, soothing liver-qi stagnation, dredging and regulating internal organs, regulating qi activity, reducing heart pressure, maintaining normal functions of the heart, enabling qi and blood to be smooth and smooth, coordinating functions of the internal organs, reducing resistance and reducing blood pressure, so that the heart is protected against mind, and the main mind is relieved if the main mind is relieved. The capsule has the advantages of normal heart function, reduced pressure, relatively stable blood pressure, smooth qi and blood, healthy body and no occurrence of diseases, can be used for treating various hypertension and intractable hypertension diseases, and has no side effect.

An implantable sensor includes a coil, a capacitive element, and an integrated circuit. The coil is configured to receive near field communication (NFC) signals from an external device and to transmit return NFC signals to the external device. The capacitive element has a capacitance configured to vary in response to changes in pressure. The integrated circuit is coupled to the capacitive element and includes at least one of a processor or circuit configured to generate pressure data based on the capacitance of the capacitive element, encode the pressure data to form encoded pressure data, and modulate the return NFC signal, to be transmitted by the coil, based on the encoded pressure data.

A septal closure device includes a frame comprising one or more tissue anchor features, an occluding membrane, and a pressure sensor device attached to the occluding membrane.

Methods for reducing cardiac pressure involve advancing a surgical instrument into a left atrium of a heart and into a pulmonary vein fluidly coupled to the left atrium. A first opening is formed in a wall portion of the pulmonary vein and a second opening is formed in a wall portion of a pulmonary artery. A shunt implant is deployed through the first and second openings such that the shunt implant extends between the pulmonary vein and the pulmonary artery and defines a shunt flow path therebetween. Blood is shunted from the pulmonary vein into the pulmonary artery through the shunt flow path. In some implementations, the pulmonary vein and the pulmonary artery are drawn toward one another prior to deployment of the shunt implant, and the shunt implant clamps tissue of the pulmonary vein and tissue of the pulmonary artery together to establish a fluid-tight shunt pathway.

The invention relates to a rehabilitation training optimization method and system based on artificial intelligence, equipment and a medium. The method comprises the following steps: acquiring basic physiological data of a user; the basic physiological data at least comprises a heart injury reason, an age parameter, a heart rate parameter, a heart pressure parameter and a body mass index; generating an initialized exercise plan of the user based on the basic physiological data; when the initialized exercise plan is executed, acquiring exercise image data, real-time heart rate parameters, fatigue image data and fatigue voice data of the user; quantifying the effect of the initialized exercise plan on the user based on the exercise image data, the real-time heart rate parameter, the fatigue feeling image data and the fatigue feeling voice data to obtain plan feedback of the initialized exercise plan; and updating the initialized exercise plan by using plan feedback and / or historical training data of the user to obtain an updated initialized exercise plan. By adopting the method, the heart rehabilitation training efficiency can be improved.

A method for managing inductive communication between an implantable medical device (IMD) and an external device, the external device having an inductive external coil configured to be located proximate to a body, the IMD configured to be located within the body. The method includes transmitting, by the inductive external coil, inductive external near field communication (NFC) signals to an inductive IMD coil, and receiving, via the inductive external coil, inductive IMD NFC signals from the inductive IMD coil. The method further includes determining a characteristic of interest (COI) based on the inductive IMD NFC signals, and dynamically tuning at least one of the inductive external coil or the inductive IMD coil based on the COI.

The embodiment of the application provides a position detection method and device of a ventricular catheter pump, relates to the technical field of medical devices, and the ventricular catheter pump is integrated with a positioning assembly; the positioning assembly is used for collecting position information of the ventricular catheter pump; the method comprises the following steps: determining a current sequence comprising a current of the ventricular catheter pump at each moment in a target time period, and determining a pressure sequence comprising a cardiac pressure of a target object at each moment in the target time period; based on the current sequence and the pressure sequence, a first region in which the ventricular catheter pump is located in a heart of the target object is calculated; position information collected by the positioning assembly at each moment in the target time period is acquired, and based on the acquired position information, a second region in which the ventricular catheter pump is located in the heart of the target object is determined; and based on the first region and the second region, a target position of the ventricular catheter pump is calculated. By applying the scheme provided in the embodiment, the position of the ventricular catheter pump can be accurately detected.

An ultrasound imaging system may receive ultrasound data of a heart, wherein the ultrasound data was acquired across at least a portion of a cardiac cycle of the heart. The ultrasound imaging system may generate a plurality of heart based measurements based, at least in part on the ultrasound data. The ultrasound imaging system may analyze, using a correlation algorithm, the plurality of heart based measurements to determine a value of cardiac pressure. In some examples, the correlation algorithm is a support vector machine (SVM) model trained on one or more of a left atrial (LA) index, a left ventricular (LV) index, LA volume parameters, echo parameters, LV strain data, LA strain data, right atrial (RA) strain data, and right ventricular (RV) strain data. In some cases, the ultrasound imaging system may weight one or more of the plurality of heart based measurements.

A method for measuring cardiac pressure includes positioning a fluid-filled catheter and a pressure wire sensor at a cardiac pressure calibration location. A first pressure measurement is acquired from the fluid-filled catheter and a second pressure measurement is acquired from the pressure wire sensor. A set of equalization parameters is identified to apply to the first pressure measurement to reduce an error between the first pressure measurement and the second pressure measurement. The equalization parameters include a frequency correction parameter and a damping correction parameter to correct for frequency and damping of oscillations in the first pressure measurement. A third pressure measurement is acquired from the fluid-filled catheter. The set of equalization parameters is applied to equalize the third pressure measurement.

A sensor-integrated valve repair assembly includes a leaflet spacer form, a first clasp member coupled to a proximal base of the leaflet spacer form and positionable to hold a first native heart valve leaflet between the first clasp member and a first side of the leaflet spacer form, a second clasp member coupled to the proximal base of the leaflet spacer form and positionable to hold a second native heart valve leaflet between the second clasp member and a second side of the leaflet spacer form, and one or more sensor devices coupled to the leaflet spacer form and designed to generate sensor readings indicative of functionality of a heart valve when the valve repair assembly is coupled to the heart valve.

Described herein are systems and methods for synchronizing electrical activity monitored by a plurality of external electrodes with supplemental cardiac data for assessing a patient's cardiac condition and configuring cardiac therapy. The supplemental cardiac data can include one or more markers indicative of a cardiac event occurrence and / or representative of at least one of a cardiac electrical signal, a heart sound, a cardiac pressure, a blood flow, and an estimated instantaneous flow waveform provided by a left ventricular assist device.

The present invention discloses an external anchor delivery and pressure measurement handle, comprising: a hollow handle shell; a force transmission lock tube axially movably disposed within the handle shell, having an axial passage for movably passing a tie rod and a distal end that can be connected to the locking structure of the external anchor; a pressure sensor disposed at the proximal end of the handle shell, the distal end of the pressure sensor abutting the proximal end of the force transmission lock tube for sensing cardiac pressure transmitted from the force transmission lock tube. The external anchor delivery and pressure measurement handle of the present invention has a simple structure, requiring only a force transmission lock tube to achieve the locking and unlocking functions of the external anchor locking structure, and also has a force measurement transmission function.