38 results about "Cardiac support" patented technology

The present disclosure relates to a method for detecting a state of wear of a cardiac support system. The method comprises a read-in step and a determination step. During the read-in step, a sensor signal representing an operating state of the cardiac support system is read in. During the determination step, a wear signal is determined using the sensor signal and a comparison rule. The wear signal represents the wear condition.

A method for determining the speed of sound in a fluid in the region of an implanted, vascular support system includes sending an ultrasonic signal using an ultrasonic sensor, reflecting the ultrasonic signal on at least one sound reflector, receiving the reflected ultrasonic signal, and determining the speed of sound in the fluid using the ultrasonic signal. The at least one sound reflector may be visible in the field of vision of the ultrasonic sensor and arranged at a defined distance at least to the ultrasonic sensor or to a further sound reflector.

The invention relates to a method for determining a total fluid volume flow (1) in the region of an implanted vascular support system (2), comprising the following steps: a) determining a reference temperature (3) of the fluid, b) determining a motor temperature (4) of an electric motor (5) of the support system (2), c) determining the thermal dissipation loss (6) of the electric motor (5), d) ascertaining the total fluid volume flow (1) using the reference temperature (3), the motor temperature (4), and the thermal dissipation loss (6) of the electric motor (5).

The invention relates to a bearing device (100) for a cardiac support system. The bearing device (100) comprises a stand unit (105) and an impeller (110). The stand unit (105) is designed to support the impeller (110) such that it can rotate. The impeller (110) is designed to rotate during an operation of the cardiac support system in order to convey a pump fluid flow (115). The impeller (110) is designed to enclose at least one subsection (120) of the stand unit (105) in the assembled state of the bearing device (100), wherein an intermediate space (125) for guiding a flushing fluid flow (130) is provided between the subsection (120) and the impeller (110). At least one flushing outlet (135) is formed in the impeller (110). The flushing outlet (135) is designed to discharge the flushing fluid flow (130) from the intermediate space (125) by means of centrifugal force when the cardiac support system is in operation.

The invention relates to a motor housing module (110) for sealing a motor compartment of a motor of a heart support system. The motor housing module (110) has at least one feed-through portion (205), at least one feed-through line (210), and at least one contact pin (215). The feed-through portion (205) is designed to establish an electrical connection between the heart support system and a connection cable in order to externally contact the heart support system. The at least one feed-through line (210) is embedded in the feed-through portion (205) and extends through the feed-through portion (205). The feed-through line (210) can be connected to the motor and to the connection cable. A first end of the at least one contact pin (215) is embedded in the feed-through portion (205) and a second end of the contact pin (215) projects from the feed-through portion (205) on a side facing away from the motor compartment. The second end of the contact pin (215) can be connected to a sensor line to at least one sensor of the heart support system and to the connection cable.

The invention relates to an implantable vascular support system (10), comprising:—a fluid channel (13) passing through the support system (10) and through which fluid can flow; —a first pressure sensor (18a, b) arranged and configured to determine at least a static pressure or a total pressure in the region of the support system (10); —a second pressure sensor (17) arranged and configured to determine at least a static pressure or a total pressure in the region of the fluid channel (13).

The invention relates to a sensor head device for a heart support system, wherein the sensor head device has at least one sensor carrying element, wherein the sensor carrying element has at least one sensor cavity for accommodating at least one sensor and / or at least one signal transmitter cavity for accommodating at least one signal transmitter.

The disclosure relates to a bearing device for a cardiac support system. The bearing device comprises a stand unit and an impeller. The stand unit is designed to support the impeller such that it can rotate. The impeller is designed to rotate during an operation of the cardiac support system in order to convey a pump fluid flow. The impeller is designed to enclose at least one subsection of the stand unit in the assembled state of the bearing device, wherein an intermediate space for guiding a flushing fluid flow is provided between the subsection and the impeller. At least one flushing outlet is formed in the impeller. The flushing outlet is designed to discharge the flushing fluid flow from the intermediate space by means of centrifugal force when the cardiac support system is in operation.

The invention relates to a method for determining a total fluid volume flow (1) in the region of an implanted vascular support system (2), comprising the following steps: a) determining a reference temperature (3) of the fluid, b) determining a motor temperature (4) of an electric motor (5) of the support system (2), c) determining the thermal dissipation loss (6) of the electric motor (5), d) ascertaining the total fluid volume flow (1) using the reference temperature (3), the motor temperature (4), and the thermal dissipation loss (6) of the electric motor (5).

The invention relates to a method for determining the speed of sound in a fluid in the region of an implanted, vascular support system, comprising the following steps: a) sending an ultrasonic signal by means of an ultrasonic sensor b) reflecting the ultrasonic signal on at least one sound reflector, which is visible in the field of vision of the ultrasonic sensor and arranged at a defined distance at least to the ultrasonic sensor or to a further sound reflector, c) receiving the reflected ultrasonic signal, d) determining the speed of sound in the fluid using the reflected ultrasonic signal.

The invention relates to a method for determining a fluid volume flow (1) through an implanted vascular support system (2), comprising the following steps: a) determining a fluid temperature parameter in the region of a cannula (4) of the support system (2), b) operating a heating element (5) which can bring about a change in a fluid temperature in the cannula (4), c) determining the fluid volume flow (1) using at least the fluid temperature parameter or the change thereof and at least one heating element operating parameter or the change thereof. The invention also relates to a vascular support system.

A cardiac support system (20) is equipped with a retaining structure (30) for the cardiac support system, said retaining structure (30) being intended to fix the cardiac support system in place. The cardiac support system comprises a device for monitoring the integrity of the retaining structure (30).

A cardiac support system may include a tubular structure configured to permit fluid to flow therethrough. The cardiac support system may include a first pressure sensor connected to the tubular structure and configured to determine at least one of a static pressure or a total pressure in a first region of the cardiac support system having a first cross-sectional area. The cardiac support system may include a second pressure sensor connected to the tubular structure and configured to determine at least one of a static pressure or a total pressure in a second region of the cardiac support system having a second cross-sectional area of a different size relative to the first cross-sectional area.

To provide suitable devices, systems, and methods for percutaneous pneumatic cardiac support. [Solution] The cardiac support system includes a pneumatic effector implanted beneath the pericardium and across the myocardial surface covering the patient's left ventricle. A port receives an implanted, percutaneously introduced cannula. The port is connected to supply the drive gas received from the cannula to the pneumatic effector. An external drive unit includes a pump assembly and a control circuit that operates the pump to activate the pneumatic effector in response to the patient's sensed cardiac rhythm. A connecting tube has a pump end connected to the pump and a percutaneous port connection end attached to the implantable port.

The present invention relates to a double-lumen cannula which is inserted percutaneously via the jugular vein into the ascending aorta via a transseptal puncture for the purpose of relieving the left heart or for biventricular cardiac support and which can be connected to an extracorporeal and temporary heart-lung support system, and to a method for using the same.

To provide a method for detecting a state of wear of a cardiac support system.SOLUTION: The method comprises a read-in step and a determination step. During the read-in step, a sensor signal (315) representing an operating state of the cardiac support system is read in. During the determination step, a wear signal (325) is determined using the sensor signal (315) and a comparison rule (320). The wear signal (325) represents the wear condition.SELECTED DRAWING: Figure 3

A medical pumping system can comprise an inflatable balloon having a first end portion configured to be disposed in an atrium of a heart or a ventricle of the heart, and a second end portion configured to be disposed in the ventricle. The medical pumping system can include a tubular member defining a lumen configured to receive the inflatable balloon. The tubular member can comprise a first opening on a first end portion of the tubular member being disposed in the atrium, or in the ventricle, and a second opening at a second end portion of the tubular member being disposed in the ventricle. The inflatable balloon can be configured to occlude the lumen while in an inflated state to direct blood flow through the lumen from the first opening to the second opening.

A pump is configured to be received within a heart. The pump has a shroud having an inlet and an outlet. An impeller is positioned within the shroud. The impeller is configured to effect flow through the shroud from the inlet to the outlet. The impeller can have a hub rotatable about a rotational axis; and a plurality of vanes extending radially from the hub.

A heart support apparatus includes a heart wrap having a shape configured to conform with a heart of a patient. The heart wrap includes four inflatable compartments, each inflatable compartment is configured to cover one of a pair of atriums and a pair of ventricles. The apparatus includes a negative charge pad configured to deliver an electrical stimulus to the heart and a positive charge pad configured to receive the electrical stimulus. The negative and the positive charge pads are connected to a power source through negative and positive lead cables, respectively. An external device with four piston pumps is used to circulate fluids to the inflatable compartments. A first suction tube and a second suction tube remove a first fluid and a second fluid, respectively, from the heart wrap. A controller with program instructions controls the piston pumps.

The invention relates to an formulation for cardiac support supplements and the method of its preparation by using molecular-level mixing technology. The method involves preparing molecular-level emulsions of alpha-lipoic acid, acetyl L-carnitine, and coenzyme Q10, followed by spray drying to produce a homogeneous powder premix. This approach ensures precise dosage control, enhanced bioavailability, and improved stability, making it a valuable advancement in the field of nutraceutical and pharmaceutical formulations.

A rotor for a cardiac support system is disclosed. The rotor is assembled or can be assembled from at least four shell elements to form a hollow cylinder and / or on a shaft, wherein the shell elements are magnetized or can be magnetized alternately in magnetization direction which are oppositely directed or are orthogonal, so as to form a magnetized body having at least four magnetic poles.

The invention relates to an apparatus (100) for attaching a cardiac support system to an insertion device, wherein the apparatus (100) is shaped to releasably couple the cardiac support system to the insertion device. The apparatus (100) has at least one main body (105), in particular a tubular main body (115), and a clamping device (110) with at least one clamping wing (115). The clamping device (110) is designed to mechanically couple the cardiac support system to the insertion device in an attachment state and to release the cardiac support system from the insertion device by displacing and / or flipping open the at least one clamping wing (115) in a release state.

The disclosure relates to an axial flow heart pump for medical support of a patient. The heart pump can have an impeller housed in an impeller housing. The impeller can have a radius ri and can be configured to rotate about a longitudinal axis. The impeller housing can have an outer radius rh about the longitudinal axis. The impeller housing can have a plurality of longitudinal struts spaced circumferentially to define a plurality of outlet openings. Each of the plurality openings can have an opening arc width less than or equal to a maximum opening arc width wo. Each of the plurality of longitudinal struts can have a width greater than or equal to a minimum width ws. The maximum opening arc width wo can be small enough to prevent a straight object outside of the impeller housing from contacting the impeller.

The invention relates to a sensor head device for a heart support system, wherein the sensor head device has at least one sensor carrying element, wherein the sensor carrying element has at least one sensor cavity for accommodating at least one sensor and / or at least one signal transmitter cavity for accommodating at least one signal transmitter.

A rotor bearing system for a minimally invasive miniaturized percutaneous mechanical circulatory support system. The rotor bearing system can include a press-fit connection between an inlet tube and an impeller cage. The inlet tube can be made of a flexible material, such as nitinol, such that it can deform around the impeller cage and exert radially inward force to keep the system intact.

The present application relates to a fluid pump (100) for heart support and a rotor (200, 200A, 200B, 200C, 200D, 200E) for such a fluid pump (100). The rotor comprises a rotor magnet assembly (210) for contactlessly supporting the rotor (200, 200A, 200B, 200C, 200D, 200E) within a cavity (310) of the fluid pump (100) such that the rotor (200, 200A, 200B, 200C, 200D, 200E) is rotatable about an axis of rotation (400) to deliver fluid from an inlet (311) of the cavity (310) to an outlet (312) of the cavity (310), and a first end (201) of the rotor (200, 200A, 200B, 200C, 200D, 200E) is greater than a second end (202) of the rotor (200, 200A, 200B, 200C, 200D, 200E) of the rotor (200, 200A, 200B, 200C, 200D, 200E). 200E) is disposed closer to the inlet (311) at the first end (201) along a second end (202) opposite the first end (201) along the axis of rotation (400), a hub structure (220) centered on the axis of rotation (400) comprising one or more magnets of the rotor magnet assembly (210); a base plate (230) disposed at the second end (202) or between the hub structure (220) and the second end (202), having blades (240) for conveying a fluid, where the gaps of the blades (240) form fluid channels (241) that open into respective outlet openings (242) and are delimited by the base plate (230) towards the second end (202), wherein at least one, preferably each fluid channel (241), has a flow opening (246) connecting the fluid channel (241) to the cavity (310), which flow opening extends between the outlet opening (242) and the hub structure (220) at least partially along a first side of the fluid channel (241) facing the first end (201).

The invention relates to a line device (105) for conducting a blood flow for a heart support system. The line device (105) has a main part (205), and the main part (205) has a first attachment section (210) at a first end for attaching the line device (105) to a head unit of the heart support system and a second attachment section (215) at a second end for attaching the line device (105) to an outlet unit of the heart support system (100). The attachment sections (210, 215) are shaped so as to be connectable in a form-fitting and / or force-fitting manner. The main part (205) has a structured section (220) with at least one stiffening recess (225) between the attachment sections (210, 215), the at least one stiffening recess (225) being shaped so as to change the stiffness of the main part (205).

Methods and apparatus for monitoring operation of a purge system of a cardiac support system are provided. The method includes determining, using at least one computer processor, a first baseline value for a purge flow rate signal associated with the purge system based, at least in part, on a purge flow rate signal associated with the purge system and a purge pressure signal associated with the purge system, and outputting via a user interface associated with the cardiac support system an indication of an alarm when a first value of the purge flow rate signal is less than a first threshold value, wherein the first threshold value corresponds to a first percentage of the first baseline value.

An extracorporeal cardiac assistance system, comprising a pump being configured to create a fluid flow from a suction line to a pressure line of the system; further comprising a control device configured to control the pump and / or an adjustable flow limiter to provide an adjustable flow rate and / or a pressure, wherein the control device is configured to execute a support mode with a plurality of consecutive support flow rate pulses and / or support pressure pulses interposed on the fluid flow and to execute a weaning mode with a plurality of such pulses, wherein an amount of energy provided to the fluid flow with each pulse is lower in the weaning mode than in the support mode.