Systems and methods are provided herein for estimating a position of a heart pump system in a patient. The system receives first data indicative of a time-varying motor current during a first time period. The motor current corresponds to an amount of current delivered to a motor, while the heart pump system is operating in the patient. The system receives second data indicative of a time-varying differential pressure during the first time period. The differential pressure is indicative of a position of the heart pump system relative to patient's heart. The system receives third data indicative of time-varying motor current during a second time period, and determines an estimate of differential pressure during the second period of time from the third data and a relationship between the first data and the second data. The estimate is usable to predict the position of the heart pump system in the patient.

A pump system is provided for pumping a fluid and a method is provided for operating the pump system. The pump system comprises a first diaphragm fluid pump, a first inlet cannula connected to the first diaphragm fluid pump for supplying a fluid to the first diaphragm fluid pump, a first outlet cannula connected to the first diaphragm fluid pump for discharging the fluid out of the first diaphragm fluid pump, and a first service pump, which is connected via a first pressure line to the first diaphragm fluid pump and is confirmed to drive the first diaphragm fluid pump via the first pressure line. The pump system further comprises a first inlet flow sensor for detecting a first inlet flow of the fluid in the first inlet cannula and/or a first outlet flow sensor for detecting a first outlet flow of the fluid in the first outlet cannula.

A pump system is provided for pumping a fluid and a method is provided for operating the pump system. The pump system comprises a first diaphragm fluid pump, a first inlet cannula connected to the first diaphragm fluid pump for supplying a fluid to the first diaphragm fluid pump, a first outlet cannula connected to the first diaphragm fluid pump for discharging the fluid out of the first diaphragm fluid pump, and a first service pump, which is connected via a first pressure line to the first diaphragm fluid pump and is confirmed to drive the first diaphragm fluid pump via the first pressure line. The pump system further comprises a first inlet flow sensor for detecting a first inlet flow of the fluid in the first inlet cannula and/or a first outlet flow sensor for detecting a first outlet flow of the fluid in the first outlet cannula.

Systems and methods are provided herein for estimating a position of a heart pump system in a patient. The system receives first data indicative of a time-varying motor current during a first time period. The motor current corresponds to an amount of current delivered to a motor, while the heart pump system is operating in the patient. The system receives second data indicative of a time-varying differential pressure during the first time period. The differential pressure is indicative of a position of the heart pump system relative to patient's heart. The system receives third data indicative of time-varying motor current during a second time period, and determines an estimate of differential pressure during the second period of time from the third data and a relationship between the first data and the second data. The estimate is usable to predict the position of the heart pump system in the patient.

Systems and methods for improving kidney function. A first mechanical circulatory support system (MCS) is introduced in a patient's heart, and a second mechanical circulatory support system is introduced in a patient's inferior vena cava or renal vein. The second mechanical circulatory support system is operated while the first mechanical circulatory support system is operating. A renal parameter is monitored during. Combined operation of the two mechanical circulatory support systems results in a change in renal parameter, e.g. pressure drop in the renal vein, indicating an improvement in kidney function. Once the renal parameter is determined to be below a target threshold, operation of the second mechanical circulatory support device is stopped.

A catheter (20), which can be part of an intravascular blood pump, possesses a kink sensor which extends over the total length of the catheter and comprises an optical fiber (28A). The optical fiber is attached to an evaluation device (100) which evaluates a preset light quantity transmitted through the optical fiber as to whether a part of the light quantity is coupled out of the optical fiber along the length of the optical fiber. This is interpreted as a kink event and displayed. The optical fiber preferably utilized for the kink sensor is the optical fiber of an optical pressure sensor.

The present invention relates to a method for implanting a device for treating an aneurysm of a patient. The method involves cutting the skin of said patient, dissecting an area of a blood vessel having the aneurysm, placing an implantable member in connection with the outside of the blood vessel having the aneurysm to exercise a pressure on the outside of the blood vessel having the aneurysm and placing a measuring device or sensor in connection in the body of the patient, wherein the measuring device or sensor is configured to measuring or sensing an expansion of the aneurysm.

The present invention relates to a method for implanting a device for treating an aneurysm of a patient. The method involves cutting the skin of said patient, dissecting an area of a blood vessel having the aneurysm, placing an implantable member in connection with the outside of the blood vessel having the aneurysm to exercise a pressure on the outside of the blood vessel having the aneurysm and placing a measuring device or sensor in connection in the body of the patient, wherein the measuring device or sensor is configured to measuring or sensing an expansion of the aneurysm.

Methods and apparatuses for determining operational parameters of a blood pump comprising a rotor which transports the blood are provided. The change in the behaviour of at least one first and one second operational parameter, independently from each other, of the pump, is determined. A determination of the flow through the pump and/or the difference in pressure across the pump and/or the viscosity of the blood takes into account the determined change in behaviour of the at least two operational parameters. A modelling for a dynamic model of the known quantities may be carried out and an estimation method using a Kalman filter may be used.

The present invention relates to a device for treating an aneurysm of a human or mammal patient, wherein the aneurysm may self expand, leading to the aneurysm bursting with high risk for death of the human or mammal patient. The device is provided with an implantable member to be placed in connection with the outside of a blood vessel having the aneurysm, and to exercise a pressure on the outside of the blood vessel having the aneurysm, a measuring device or sensor for measuring or sensing an expansion of the aneurysm, and a monitoring system for monitoring the expansion of the aneurysm based on a signal received from the measuring device or sensor.