22 results about "Heart right" patented technology

The invention discloses a blood leakage rate measuring device and method and a clinical actual blood flow obtaining method. The blood leakage rate measuring device comprises a right heart simulator filled with liquid and a pulmonary artery simulator, a second pressure sensor and a first pressure sensor are installed at the bottom in the right heart simulator and the pulmonary artery simulator, the right heart simulator is communicated with the pulmonary artery simulator through a first pipeline and a second pipeline, and an auxiliary pump is installed on the first pipeline. The right heart auxiliary catheter penetrates through the right heart simulator, the valve assembly is arranged in liquid in the right heart simulator, the end cap is arranged in liquid in the pulmonary artery simulator, a second flow sensor is installed on the outer wall of the short tube part between the right heart simulator and the pulmonary artery simulator, and a first flow sensor is installed on the outer wall of the long tube part close to the extracorporeal membrane type cavity. According to the clinical actual blood flow obtaining method, the actual blood flow of the right heart auxiliary catheter can be accurately obtained through the obtained blood leakage rate.

The invention belongs to the technical field of medical ultrasonic diagnosis auxiliary equipment, and discloses an electric right heart acoustic radiography foaming device which comprises a device body, the device body comprises a base, a mounting plate is fixedly arranged on the rear side of the base, a driving assembly is arranged on the front side of the mounting plate, and the driving assembly comprises fixing frames fixed to the upper side and the right side of the mounting plate; a stepping motor is fixedly arranged at the top of the fixing frame, a ball screw is fixedly arranged at the tail end of a main shaft of the stepping motor, a sliding block is spirally arranged on the outer side of the ball screw in a sleeving mode, and a connecting rod is fixedly arranged at the bottom of the sliding block, so that accurate controllability of power transmission and visual adjustment of parameters in the contrast agent injection process are achieved; specifically, key parameters such as injection speed and dosage can be accurately set through the operation panel, a traditional manual injection mode is replaced, and the stability of the foaming effect of the contrast agent is guaranteed.

The invention relates to the technical field of medical instruments, in particular to an intelligent catheter implanted right heart blood flow management system, a blood pumping impeller comprises a hub structure and a blade assembly fixed around the hub structure, and the near end of a hub is an annular concave curved surface used for guiding blood flow; the blade assembly comprises two symmetrical continuous blades with the same thickness, and the placement angles of the blades are gradually increased from the near end to the far end. The design structure that the segmented hub and the continuous blades are combined is adopted, all segments of the hub structure have different geometrical characteristics, the molded line of each continuous blade is formed by combining an arc and a straight line, and the design of a gradually-increased setting angle and a large wrap angle is matched with the design of a parabola at the far end of the hub, so that the shear stress and the flow dead zone are reduced, and the service life of the impeller is prolonged. Therefore, the risks of hemolysis and thrombus are reduced, the blood flow path is optimized under the miniaturized condition, the catheter implantation type miniature axial flow blood pump is more suitable for the blood flow flowing characteristic in the catheter implantation type miniature axial flow blood pump, and smooth transition from radial inflow to axial outflow of blood can be achieved.

The invention discloses a pulmonary arterial hypertension recognition device and method based on multiple paths of electrocardio heart sound signals, and relates to the technical field of biomedicine, and the method comprises the steps: limiting an aortic valve closing candidate peak and a drop point of a pulmonary valve closing candidate peak in a time interval between a main peak anchor point time boundary of a double-anchoring split fragment set and an electrocardio fragment key turning point; adjacent beat backtracking replacement and multi-channel consistent voting retention are performed on candidate peaks of cross-beat hopping, and a physiological consistent split fragment set is generated; and according to the physiological consistency split fragment set, converging split sequences of multiple paths of heart sounds, and carrying out beat-level splicing and in-window consistency closing on the split sequences and right heart load related form entries of multiple paths of electrocardio, so as to generate a pulmonary arterial hypertension recognition and diagnosis set. According to the method, high-precision synchronization of multiple paths of electrocardiogram and heart sound signals is realized, equipment difference and noise interference are eliminated, the reliability of feature extraction is guaranteed, and the pulmonary arterial hypertension recognition stability is improved.

This invention discloses a method for controlling left and right ventricular compression before extracorporeal circulation. First, in an in vitro environment, peristaltic pumps are installed at the left and right ventricular inlets of the extracorporeal circulation device. Then, an inlet pump is connected to the inlet of the peristaltic pumps, and an outlet pump is connected to the outlet of the peristaltic pumps. Finally, a first pressure measuring structure and a second pressure measuring structure are respectively installed on the side of the inlet and outlet pumps away from the peristaltic pumps, and the pressure of both the inlet and outlet pumps is adjusted to -180 mmHg. The negative pressure of the inlet pump is adjusted by the first pressure measuring structure, and the negative pressure of the outlet pump is adjusted by the second pressure measuring structure, thereby quantifying the adjustment method. This visualizes the process of controlling left and right ventricular compression before extracorporeal circulation, converting the adjustment results into specific negative pressure values ​​for the inlet and outlet pumps. This makes the reference values ​​for adjusting left and right ventricular compression numerically and standardized, avoiding adjustment discrepancies, eliminating reliance on experience and intuition, and providing a quick and highly accurate adjustment method.

A heart failure management system for a patient includes a plurality of sensors including at least one implantable pressure sensor positioned within the heart to capture synchronized left and right heart pressure waveforms, transmitted via one or more transmitters to a receiver. Control circuitry receives these waveforms and processes them using a machine learning medication dosage management model, trained on historical left and right heart pressure logs, volume status metrics (e.g., weight, fluid intake, symptoms), and / or ground truth dosage logs for certain heart failure treatment medications, such as a blood pressure reducing medication (e.g., ARNI) and an intravascular volume reducing medication (e.g., Lasix). The model can generate real-time dosage recommendations, systemic blood pressure, and volume load predictions in real-time, enabling precise, data-driven treatment adjustments aligned with clinical guidelines, supporting timely clinical decisions or automated medication dispensing to optimize patient outcomes and reduce hospitalization risks.

According to one aspect of the disclosure, a method of advancing a delivery catheter to a heart of a patient includes advancing a guidewire through the vasculature of the patient until the guidewire reaches a target treatment site in or adjacent to the heart. A dilator may be positioned within the delivery catheter so that a distal tip of the dilator extends beyond a distal end of the delivery catheter. The dilator may be advanced through the vasculature of the patient directly over the guidewire while simultaneously advancing the delivery catheter through the vasculature until the distal tip of the dilator reaches the target treatment site. While maintaining the distal tip of the dilator substantially stationary relative to the target treatment site, the delivery catheter may be advanced over the dilator until the distal end of the delivery catheter is positioned at the target treatment site.

The application discloses a use of taibai araloside in treating hypoxic pulmonary arterial hypertension. In the use of hypoxia to induce pulmonary arterial hypertension, it is found that the taibai araloside can reduce right ventricular pressure and right heart hypertrophy index, and inhibit pulmonary arterial remodeling; the taibai araloside reduces the expression and activity of ACE in the lung in a concentration-dependent manner, and corrects the disorder of the RAS system in the lung caused by hypoxic pulmonary arterial hypertension. Moreover, a monomer component of the taibai araloside, anemarrhena asphodeloides glycoside and chizhenshan saponin IVa, has a stable combination with ACE. The results show that the taibai araloside has the potential to be developed into a drug for preventing and treating hypoxic pulmonary arterial hypertension in the clinic, and also provides a prevention and treatment strategy for interstitial lung disease, chronic obstructive pulmonary disease, sleep apnea syndrome, chronic high altitude disease and neonatal respiratory disease.

The application discloses a pulmonary arterial hypertension recognition device and method based on multiple ECG and PCG signals, and relates to the technical field of biomedicine. The device comprises the following steps: limiting the landing points of the aortic valve closing candidate peak and the pulmonary valve closing candidate peak in the main peak anchor point time boundary and the ECG segment key turning point time interval of the double-anchored split segment set, performing adjacent beat backtracking replacement and multi-channel consistent voting reservation on the candidate peak of the cross-beat jump, and generating a physiological consistency split segment set; according to the physiological consistency split segment set, gathering the split sequence of the multiple PCGs, and performing beat-level splicing and window-in-consistency closure on the right heart load related morphological items of the multiple ECGs, and generating a pulmonary arterial hypertension recognition diagnosis set. The application realizes high-precision synchronization of multiple ECG and PCG signals, eliminates device differences and noise interference, guarantees the reliability of feature extraction, and improves the stability of pulmonary arterial hypertension recognition.

This invention relates to a simulator for transcatheter interventional treatment of right ventricular valves, comprising a model mounting housing with multiple simulated liquid inlet channels and multiple simulated liquid outlet channels disposed in the left and right side walls of the housing; the multiple liquid inlet channels are connected to a shunt device via pipes, the shunt device is connected to a heating device via pipes, the heating device is connected to a simulated liquid storage device via pipes, the simulated liquid storage device is connected to a manifold via pipes, the manifold is connected to the simulated liquid outlet channels via pipes, and a liquid pump is also disposed between the simulated liquid storage device and the heating device; the simulator for transcatheter interventional treatment of right ventricular valves can simulate the flow of blood in a pulsating conduit model, thereby more realistically simulating the process of transcatheter interventional treatment of right ventricular valves, allowing doctors to simulate surgery in a model that is closer to a real environment before performing actual surgery, thereby improving the success rate of the surgery.

The invention discloses a system and method for diagnosing pulmonary tuberculosis-pulmonary arterial hypertension through artificial intelligence chest CT imaging, and the system comprises a data acquisition module which is used for collecting a chest CT image of a patient in the supine position full inspiration period, and exporting the CT image in a DICOM format; the data processing module is used for carrying out full-lung automatic segmentation and lung lobe segmentation VTDLT calculation by using an AI algorithm through AI image analysis software; the quantitative analysis module is used for outputting the damage volume and the number and distribution of the affected lung lobes; the risk prediction module is used for combining the VTDLT with clinical parameters to construct a PH risk prediction model; according to the application, the pulmonary arterial hypertension is screened by combining CT imaging with an artificial intelligence algorithm, an original mode of screening through right heart catheter examination is not changed, a noninvasive, early-stage and accurate PH screening tool is provided for TDL patients, the use requirements of RHC are reduced, and the pain and medical burden of the patients are relieved.

The invention, which belongs to the technical field of the medical equipment, discloses a lung transplantation post-operative cardiopulmonary capacity collaborative evaluation and adjustment system comprising a multi-parameter acquisition module, a cardiopulmonary interaction modeling module, a capacity strain test module, a haemodynamics target setting module, a treatment response prediction module and an adjustment execution module. The system quantitatively analyzes the complex relationship among the right heart function, the pulmonary vascular resistance and the pulmonary compliance through a cardiopulmonary interaction modeling engine, evaluates the tolerance of a patient to the capacity change through a capacity strain test, and formulates an individualized hemodynamic target according to a specific cardiopulmonary interaction mode of the patient. Potential influences of different intervention measures are simulated, treatment parameters are automatically adjusted, the hemodynamic stability and the oxygenation function of a lung transplantation patient are remarkably improved, and the occurrence rate of complications is reduced.

The invention discloses application of a traditional Chinese medicine composition in preparation of a medicine for treating pulmonary arterial hypertension, and relates to the technical field of traditional Chinese medicines. The invention provides a traditional Chinese medicine composition Jinshui ten-component decoction in a medicine for treating pulmonary arterial hypertension. The traditional Chinese medicine composition comprises the following components in parts by weight: 20-50 parts of raw astragalus membranaceus, 10-30 parts of codonopsis pilosula, 10-25 parts of salvia miltiorrhiza, 8-20 parts of safflower carthamus, 10-25 parts of herba lycopi, 6-15 parts of winged euonymus twig, 10-20 parts of semen lepidii, 10-25 parts of poria cocos, 3-10 parts of white mulberry root-bark and 10-25 parts of semen plantaginis. The traditional Chinese medicine compound is based on the treatment principle of tonifying qi, activating blood and inducing diuresis to alleviate edema of traditional Chinese medicine, realizes multi-target regulation and control, effectively reduces pulmonary arterial pressure, improves right heart function and reverses pulmonary vascular remodeling through synergistic compatibility of multiple traditional Chinese medicines, has the advantages of high safety, low price and suitability for long-term administration, and provides a new effective choice for treatment of pulmonary arterial hypertension.

The utility model belongs to the technical field of pulmonary vessel guiding catheters, and particularly relates to a pulmonary vessel guiding catheter which can be used for right heart function examination. The technology comprises a guiding catheter, and a floating catheter is arranged in the guiding catheter in a penetrating mode. According to the technical scheme, the functions of an existing right heart floating catheter and an existing pulmonary vessel guiding catheter are organically combined, and the function effects of the original right heart floating catheter and the original pulmonary vessel guiding catheter are achieved through one set of technical scheme. Specifically, a guiding catheter in the prior art is adopted, and physical characteristics such as proper flexibility and strength are utilized to adapt to various bends and steers in a blood vessel; a floating catheter in the prior art is adopted to realize pulmonary vessel intervention operation; the floating catheter is arranged in the guiding catheter, so that the guiding catheter can be used for right heart function examination and pulmonary vessel intervention operation, and clinical diversified requirements are met.

The invention discloses a heart beat and blood circulation dynamic teaching model, and belongs to the technical field of biological teaching aids, and the model comprises a left heart and right heart independent elastic sealed cavity type heart simulation unit which is used for simulating the contraction and relaxation of the heart, is made of a flexible pipeline, is provided with a one-way control part, is used for limiting the one-way flow of blood, and has one end connected with the heart; one end of the blood vessel simulation unit is connected with a viscera, the viscera simulation unit is arranged according to the coronal plane of a human body, a closed channel is filled with the simulated blood medium containing two colors, the circulation driving unit is connected with a pipeline in series to drive blood circulation, and the control unit is electrically connected with the heart, the driving unit and the sound box. Through a heart simulation unit divided into a left heart and a right heart, heart actions are accurately simulated, and a heart beat cycle is presented; arteriovenous blood is clearly distinguished through two color media, and the transformation process is displayed.

The application discloses an endothelium-targeting controlled-release anti-thrombotic drug intelligent monitoring biodegradable heart occluder, and relates to the field of medical devices, which comprises an occluder body and a sheath pipe for regulating and controlling the occluder body, wherein the occluder body is composed of a double-disc-shaped biological skeleton, a fixed deformation body and a biological flow-blocking film; the double-disc-shaped biological skeleton is composed of two mutually symmetrical adhering discs forming left and right heart disc surfaces; a stent outer disc is arranged around the side surface of the adhering disc; a double-layer anti-thrombotic drug controlled-release layer is arranged on the surface of the stent outer disc; the two adhering discs are tightly connected with the fixed deformation body; an ultrasonic blood flow sensor is arranged in the fixed deformation body; an impedance sensor is arranged on one side of the ultrasonic blood flow sensor in the fixed deformation body; and the biological flow-blocking film is arranged on the surface of the two adhering discs on the opposite side. The occluder is periodically degraded in the body of a patient to reduce complications caused by foreign matter retention, and is used for thrombus formation on the surface of the occluder, so that local low-dose anti-thrombotic drugs are controlled and released, thereby reducing the systemic adverse reactions caused by long-term oral administration of anti-thrombotic drugs after occlusion. The thrombus risk and the endothelialization process of the occluder are dynamically monitored to assist the repair and regeneration of heart tissue.

The present invention relates to a device and method for segmenting the membranous septum. The method comprises segmenting the left ventricular outflow tract, LVOT, of the heart in a 3D image data set; determining wall thickness information indicative of the wall thickness of the septum at different locations of a part of the segmented LVOT that is oriented towards the right heart chambers and right atrium; mapping the determined wall thickness information onto the surface of said part of the segmented LVOT; and segmenting the membranous septum in the 3D image data set based on the mapped wall thickness information.

The utility model discloses an auxiliary tool for right heart acoustic radiography examination, and belongs to the field of radiography blowing assistance. A right heart acoustic radiography examination auxiliary tool comprises an examination auxiliary mechanism used for assisting a person to be examined in blowing air. The examination auxiliary mechanism comprises a bellyband, an air bag is fixedly mounted on the inner side of the bellyband, and a deflation valve is mounted at the top end of the air bag; one end of the air delivery pipe is connected and communicated with the air bag, and the other end of the air delivery pipe is connected with an inflator pump; the magic tapes are arranged on the outer side of one end and the inner side of the other end of the bellyband; according to the utility model, the bellyband is encircled on the waist; when the patient inhales, the pressure of the abdominal cavity is reduced, the abdominal cavity collapses and becomes shrunken, and when the patient inhales, the air bag of the abdominal belt is inflated and swelled by the air pump to assist the patient in pressing the abdominal cavity shrunken and keep the pressure; the detection efficiency is improved.

The utility model relates to a pulsating flushing pipeline model applied to connection with a transcatheter interventional therapy right heart valve simulator, which comprises a model main body, the model main body is arranged in a model mounting shell, and module mounting shafts are symmetrically arranged on the model mounting shell. Model mounting bases are arranged on the left side and the right side of the model body. The module mounting shafts are rotationally connected with the model mounting bases. A plurality of simulation liquid inlet channels are formed in one side wall of the left side wall and the right side wall of the model mounting shell, and a plurality of simulation liquid outlet channels are formed in the other side wall of the left side wall and the right side wall of the model mounting shell; the pulsating flushing pipeline model connected with the transcatheter interventional therapy right heart valve simulator can simulate the flow of blood in the pulsating flushing pipeline model, so that the process of transcatheter interventional therapy right heart valve can be simulated more truly, a doctor can simulate an operation in a model closer to a real environment before performing an actual operation, and the operation efficiency is improved. Therefore, the success rate of surgery is improved.

An epicardial implant system prevents right heart failure following left ventricular assist device (LVAD) implantation through dual-mechanism support of the right ventricular free wall and tricuspid valve annulus. The device comprises a biocompatible independent adjustment mechanisms for ventricular wall constraint and annular geometry optimization. The invention simultaneously treats both ventricular dilation and annular valve dysfunction through separate adjustable elements. Epicardial placement eliminates atriotomy requirements while providing real-time hemodynamic optimization. Atraumatic anchoring permits repositioning without tissue damage. Preclinical validation confirms six-minute implantation with independent component efficacy under afterload conditions. The ventricular component prevents dilation while the annular component reduces regurgitation, validating dual-mechanism necessity. The prophylactic approach addresses mechanical disruption causing right heart failure in 40% of LVAD recipients. Applications extend beyond LVAD to coronary bypass, and valvular corrections. Biodegradable embodiments accommodate pediatric cardiac growth. The system provides the first dedicated prophylactic intervention for post-surgical right heart failure across multiple cardiac procedures.

The application discloses a method for controlling the tightness of left and right heart pressure in cardiopulmonary bypass, which comprises the following steps: installing a peristaltic pump at the left and right heart inlets of a cardiopulmonary bypass device in an isolated environment; connecting a liquid inlet pump to the liquid inlet of the peristaltic pump and connecting a liquid outlet pump to the liquid outlet of the peristaltic pump; finally, setting a first pressure measuring structure and a second pressure measuring structure on the sides of the liquid inlet pump and the liquid outlet pump, respectively, away from the peristaltic pump, and adjusting the pressure of the liquid inlet pump and the liquid outlet pump to be-20mmHg. The negative pressure of the liquid inlet pump is adjusted through the first pressure measuring structure, and the negative pressure of the liquid outlet pump is adjusted through the second pressure measuring structure, so as to achieve the purpose of quantitative adjustment. The adjustment method is accurate, fast and reliable, and can effectively avoid the risk of reduction of pump blood volume, insufficient blood supply, direct interruption of blood circulation, damage of blood components, hemolysis, gas embolism and other risks caused by the "suction collapse" or "suction failure" of the pipe connected with the peristaltic pump.