109 results about "Right heart" patented technology

A cannulation system for cardiac support uses an inner cannula disposed within an outer cannula. The outer cannula includes a fluid inlet for placement within the right atrium of a heart. The inner cannula includes a fluid inlet extending through the fluid inlet of the outer cannula and the atrial septum for placement within at least one of the left atrium and left ventricle of the heart. The cannulation system also employs a pumping assembly coupled to the inner and outer cannulas to withdraw blood from the right atrium for delivery to the pulmonary artery to provide right heart support, or to withdraw blood from at least one of the left atrium and left ventricle for delivery into the aorta to provide left heart support, or both.

A device for regulating blood pressure in a heart chamber is provided. The device includes a shunt positionable within a septum of the heart. The shunt is designed for enabling blood flow between a left heart chamber and a right heart chamber, wherein the flow rate capacity of the device is mostly a function of pressure in the left heart chamber.

One method for diagnosing a cardiovascular-related condition in a breathing person comprises interfacing a valve system to the person's airway. The valve system is configured to decrease or prevent respiratory gas flow to the person's lungs during at least a portion of an inhalation event. The person is permitted to inhale and exhale through the valve system. During inhalation, the valve system functions to produce a vacuum within the thorax to increase blood flow back to the right heart of the person, thereby increasing blood circulation and blood pressure. Further, at least one physiological parameter is measured while the person inhales and exhales through the valve system. The measured parameter is evaluated to diagnose a cardiovascular condition.

Devices and methods described for delivery of therapeutic substances to a depth within the heart muscle via the venous side of the heart, with a primary focus on delivery through the coronary sinus. The devices and methods may be combined with percutaneous access catheters in order to provide for right heart delivery of therapeutic agents.

A method for increasing circulation in a breathing person utilizes a valve system that is interfaced to the person's airway and is configured to decrease or prevent respiratory gas flow to the person's lungs during at least a portion of an inhalation event. The person is permitted to inhale and exhale through the valve system. During inhalation, the valve system functions to produce a vacuum within the thorax to increase blood flow back to the right heart of the person, thereby increasing cardiac output and blood circulation.

Methods and devices are disclosed for minimally invasive procedures in the heart. In one application, a catheter is advanced from the left atrium through the mitral valve and along the left ventricular outflow tract to orient and stabilize the catheter and enable a procedure such as a “bow tie” repair of the mitral valve. Right heart procedures are also disclosed.

One method for diagnosing a cardiovascular-related condition in a breathing person comprises interfacing a valve system to the person's airway. The valve system is configured to decrease or prevent respiratory gas flow to the person's lungs during at least a portion of an inhalation event. The person is permitted to inhale and exhale through the valve system. During inhalation, the valve system functions to produce a vacuum within the thorax to increase blood flow back to the right heart of the person, thereby increasing blood circulation and blood pressure. Further, at least one physiological parameter is measured both prior to and while the person inhales and exhales through the valve system. The measured parameters are evaluated to confirm the initial diagnosis of a cardiovascular condition.

A device for regulating blood pressure in a heart chamber is provided. The device includes a shunt positionable within a septum of the heart. The shunt is designed for enabling blood flow between a left heart chamber and a right heart chamber, wherein the flow rate capacity of the device is mostly a function of pressure in the left heart chamber.

A hemodynamic monitor and corresponding method for determining the requirement for, and if required the nature or extent of, and for monitoring the response to, an intervention by a carer for a subject in order to improve the hydration level and hemodynamic status of the subject during a period or periods of hemodynamic instability includes, firstly, a processor. The processor incorporates software arranged to continuously analyse and process a blood pressure or arterial volume / plethysmographic signal obtained from the subject in order to derive a plurality of complementary parameters throughout the monitoring of the subject. The monitor also incorporates display means displaying images representing the derived plurality of complementary parameters. The images may include at least one image representing graphically at least one stress related hemodynamic parameter plotted against time to provide an immediate indication of a change in hemodynamic status and thus the requirement for an intervention. The images may also include at least one image representing graphically at least one fluid responsiveness parameter plotted against time to provide an indication of the hydration level and associated ventricular pre load status of the subject to determine the nature or extent of the intervention if required. Respiratory variations in fluid responsiveness parameters may usefully be displayed. The images may also include at least one image representing graphically at least one response related parameter compared to the value of the parameter at the point of the intervention to provide an indication of the desired and / or actual response of the subject to an intervention. Trend and acute changes displays may be combined. Specific parameters providing information on the quality of the left ventricle and right heart / venous return / preload may also be derived and displayed.

One method for diagnosing a cardiovascular-related condition in a breathing person comprises interfacing a valve system to the person's airway. The valve system is configured to decrease or prevent respiratory gas flow to the person's lungs during at least a portion of an inhalation event. The person is permitted to inhale and exhale through the valve system. During inhalation, the valve system functions to produce a vacuum within the thorax to increase blood flow back to the right heart of the person, thereby increasing blood circulation and blood pressure. Further, at least one physiological parameter is measured both prior to and while the person inhales and exhales through the valve system. The measured parameters are evaluated to confirm the initial diagnosis of a cardiovascular condition.

Implantable medical devices (IMDs) for detection and measurement of cardiac mechanical and electrical function employ a system and method for determining mechanical heart function and measuring mechanical heart performance of upper and lower and left and right heart chambers without intruding into a left heart chamber through use of a dimension sensor. The dimension sensor or sensors comprise at least a first sonomicrometer piezoelectric crystal mounted to a first lead body implanted into or in relation to one heart chamber that operates as an ultrasound transmitter when a drive signal is applied to it and at least one second sonomicrometer crystal mounted to a second lead body implanted into or in relation to a second heart chamber that operates as an ultrasound receiver.

A cannulation system for cardiac support uses an inner cannula disposed within an outer cannula. The outer cannula includes a fluid inlet for placement within the right atrium of a heart. The inner cannula includes a fluid inlet extending through the fluid inlet of the outer cannula and the atrial septum for placement within at least one of the left atrium and left ventricle of the heart. The cannulation system also employs a pumping assembly coupled to the inner and outer cannulas to withdraw blood from the right atrium for delivery to the pulmonary artery to provide right heart support, or to withdraw blood from at least one of the left atrium and left ventricle for delivery into the aorta to provide left heart support, or both.

A system and apparatus comprising a multi-sensor catheter for right heart and pulmonary artery catheterization is disclosed. The multi-sensor catheter comprises multi-lumen catheter tubing into which at least three optical pressure sensors, and their respective optical fibers, are inserted. The three optical pressure sensors are arranged within a distal end portion of the catheter, spaced apart lengthwise within the distal end portion for measuring pressure concurrently at each sensor location. The sensor locations are configured for placement of at least one sensor in each of the right atrium, the right ventricle and the pulmonary artery, for concurrent measurement of pressure at each sensor location. The sensor arrangement may further comprise an optical thermo-dilution sensor, and another lumen is provided for fluid injection for thermo-dilution measurements. The catheter may comprise an inflatable balloon tip and a guidewire lumen, and preferably has an outside diameter of 6 French or less.

One method for diagnosing a cardiovascular-related condition in a breathing person comprises interfacing a valve system to the person's airway. The valve system is configured to decrease or prevent respiratory gas flow to the person's lungs during at least a portion of an inhalation event. The person is permitted to inhale and exhale through the valve system. During inhalation, the valve system functions to produce a vacuum within the thorax to increase blood flow back to the right heart of the person, thereby increasing blood circulation and blood pressure. Further, at least one physiological parameter is measured while the person inhales and exhales through the valve system. The measured parameter is evaluated to diagnose a cardiovascular condition.

Devices and methods described for delivery of therapeutic substances to a depth within the heart muscle via the venous side of the heart, with a primary focus on delivery through the coronary sinus. The devices and methods may be combined with percutaneous access catheters in order to provide for right heart delivery of therapeutic agents.

The invention discloses a cardiopulmonary resuscitation auxiliary device, an intelligent terminal and a cardiopulmonary resuscitation auxiliary system. The cardiopulmonary resuscitation auxiliary device is used for assisting a rescuer in implementation of cardiopulmonary resuscitation and comprises a wear body, a press information acquisition module and a processing module. The press information acquisition module is arranged on the wear body and used for acquiring moving amplitude and / or actual moving frequency of the wear body when the rescuer carries out chest compression. The processing module is connected with the press information acquisition module and capable of generating amplitude control signals and / or frequency control signals. The cardiopulmonary resuscitation auxiliary device, the intelligent terminal and the cardiopulmonary resuscitation auxiliary system have the advantages that the rescuer can be assisted in implementation of correct cardiopulmonary resuscitation actions to rescue more people by cardiopulmonary resuscitation, so that more lives can be saved.

Devices, methods, and systems for determining a systolic pulmonary artery pressure index (PAPi) corresponding to pulmonary artery pressure (PAP) and / or right ventricular systolic pressure (RVSP) use lead-based electronic sensors detecting right heart valvular events. Suitable sensors include impedance sensors, accelerometers, cardiomechanical electric sensors, and sonomicrometers.

A system for assisting the right heart of a patient includes a PA cannula adapted for insertion into a PA of a patient through the right internal jugular vein of the patient. The system includes a percutaneous RA cannula adapted for insertion into an RA of the patient. The system includes a blood pump disposed outside of the patient to which the RA cannula and the PA cannula are connected to provide right ventricular circulatory support to the patient without any left ventricular assist. A method for assisting the right heart of a patient includes the steps of inserting a PA cannula into a PA of a patient. There is the step of inserting an RA cannula into an RA of the patient. There is the step of connecting the RA cannula and the PA cannula to a blood pump disposed outside of the patient. There is the step of activating the blood pump to provide right ventricular circulatory support to assist the heart of the patient.

A torque for controlling the advancement and rotation of a right heart catheter during a right heart catheterization procedure. The torque has a casing with a cavity for receiving a core, and a lumen for receiving the right heart catheter. A gripper is disposed within the core to tightly grip the right heart catheter. The core has a plurality of threads that engage teeth of a handle. The handle is attached to the casing at an axis and rotates about the axis during use. The core has an elongated spiraled recess which is engaged by a guide pin attached to the casing and extending within the cavity. When the handle is rotated, the teeth of the handle engage the threads to rotate the core, and the guide pin engages the elongated spiraled recess to move the core laterally, thereby advancing and rotating the right heart catheter.

A system for assisting the right heart of a patient includes a PA cannula adapted for insertion into a PA of a patient through the right internal jugular vein of the patient. The system includes a percutaneous RA cannula adapted for insertion into an RA of the patient. The system includes a blood pump disposed outside of the patient to which the RA cannula and the PA cannula are connected to provide right ventricular circulatory support to the patient without any left ventricular assist. A method for assisting the right heart of a patient includes the steps of inserting a PA cannula into a PA of a patient. There is the step of inserting an RA cannula into an RA of the patient. There is the step of connecting the RA cannula and the PA cannula to a blood pump disposed outside of the patient. There is the step of activating the blood pump to provide right ventricular circulatory support to assist the heart of the patient.

A minimal intrusive cardiac support apparatus is disclosed which requires only one incision into a main blood vessel or heart chamber. The apparatus includes a pair of generally coaxial and slideably arranged cannulae (one inner and one outer) communicatively coupled to a blood pump for providing right-heart and / or left-heart cardiac support during cardiac surgery. Optional balloons may be mounted on the outside of the inner and outer conduits which can be selectively inflated to seal off the sides surrounding vessel or to deliver cooling fluid or medication to the surrounding tissue. Using the apparatus, a method of pumping blood through the body is also disclosed.

Multi-chamber pacing may result in capture of one chamber, capture of multiple chambers, fusion, or non-capture. Approaches for detecting various capture conditions during multi-chamber pacing are described. Pacing pulses are delivered to left and right heart chambers during a cardiac cycle. A cardiac electrogram signal is sensed following the delivery of the pacing pulses. Left chamber capture only, right chamber capture only, and bi-chamber capture may be distinguished based on characteristics of the cardiac electrogram signal. Multi-chamber capture detection may be implemented using detection windows having dimensions of time and amplitude. The detection windows are associated with expected features, such as expected signal peaks, under a particular capture condition. The cardiac electrogram signal features are compared to detection windows to determine the capture condition.

The central venous sensor assembly comprises a catheter body with several proximal ports. The catheter portion placed in the vena cava superior is equipped with a proximal flux measurement unit, and the catheter portion placed in the vena cava inferior is equipped with a distal flux measurement unit. A first input channel supplies a measurement signal indicative of a flux vp to the evaluation unit from which the latter calculates a blood flow in the vena cava superior. Likewise, a second input channel supplies a measurement signal indicative of a flux vd to the evaluation unit from which the latter calculates a blood flow rate in the vena cava inferior. Due to continuity, the sum of the flow rates in the upper and lower central veins corresponds to the flow rate through the right heart and in the pulmonary artery and thus to cardiac output.

The invention discloses a heart sound signal segmenting method. The heart sound signal segmenting method is characterized by comprising the following steps: 1, preprocessing; 2, correcting; 3, screening. The heart sound signal segmenting method is simple in steps and convenient to use; through the heart sound signal segmenting method comprising multi-level correcting and screening, right heart sound segments can be obtained, so that a more convenient and quick method is provided for heart rate detection; therefore, the heart sound signal segmenting method is suitable for popularization and application.

Problems To provide a cardiac disease treatment system for accurately diagnosing the functional cause of an abnormality of a cardiac disease by analyzing the hemodynamic state of a patient, automatically performing medication in accordance with the diagnosis result, and treating the cardiac disease.Means for Solving ProblemsThe cardiac disease treatment system is characterized by comprising input means (2) for inputting the cardiac output value of the patient, the left atrial pressure value and / or the right atrial pressure value, first calculating means (31) for calculating the pumping ability value of the left heart or the right heart from the inputted cardiac output and the left or right atrial pressure value, first comparing means (41) for comparing the pumping ability value of the left heart or the right heart with a target pumping ability value, and first medicating means (51) for medicating the patient in accordance with the result of the comparison by the first comparing means (41).