87 results about "Heart right" patented technology

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.

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.

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.

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.

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.

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 provides a right ventricle multi-map partitioning method based on a cardiac magnetic resonance movie minor-axis image. A magnetic resonance imaging system is used for collecting a certain number of heart original magnetic resonance images of a tested person, and a region of interest is extracted. A fixed number of map images of right ventricle are selected from the original magneticresonance images to be added into a map set, and an expert manual partitioning result is obtained by an expert manually partitioning the map image. The map images and target images obtain a right ventricle coarse partitioning result by adopting B sample conversion based on normalized mutual information, COLLATE fusion is adopted for the coarse partitioning result, firstly log likelihood estimationis carried out on complete data, and then iterative solution is carried out by using a maximum expectation algorithm until convergence, so that the right ventricle final partitioning result is obtained through amending treatment. The method has higher robustness, the accuracy and precision of fusion can be improved, and the method is used for accurately partitioning the heart right ventricle minor-axis image.

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 Problems

The 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).

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.

A system comprising a multi-sensor catheter for monitoring of a cardiac hemodynamic condition, e.g. heart failure, is disclosed. The multi-sensor catheter comprises multi-lumen catheter tubing comprising first and second optical pressure sensors, and their respective optical fibers and connectors. For right heart and pulmonary artery catheterization, a flow-directed multi-sensor catheter comprises a guidewire lumen, an inflatable balloon tip, and sensor locations are configured for placement of a sensor in each of the right atrium and pulmonary artery, for measurement of central venous pressure in the right atrium and a pulmonary artery pressure. An optical fiber for oximetry may be included. The outside diameter is small enough for insertion through a vein of the arm. For monitoring of a left atrial shunt, sensors of a multi-sensor catheter are configured for measuring pressures upstream and downstream of the shunt, e.g. in the left and right atria, or left atrium and coronary sinus.