So as to be able to determine the position of a functional element as precisely as possible during the invasive use of a blood pump in a patient's body without the use of imaging methods, the blood pump is connected to a main sensor which records signals of the patient's heart, which are compared to other electrophysiological heart signals recorded by several sensors distributed on the body surface so as to allow the position of the blood pump to be determined by way of linking.

An intra-aortic dual balloon driving pump catheter device having a catheter; a first balloon and a second balloon respectively surrounding the catheter, being arranged successively along the longitudinal direction of the catheter, wherein the position of the first balloon is placed at the distal end of the catheter, and the second balloon is placed immediately adjacent to the proximal end of the first balloon; the first balloon and the second balloon are periodically expanded to a dimension that nearly blocks the aortic blood flow and contracted to a dimension that does not prevent the blood flow from passing through; wherein the first balloon periodically inflates in diastole and deflates in systole working as a pump, while the second balloon conversely deflates in systole and inflates in diastole functioning as a valve, altogether leading to blood pumping from contracting ventricle and keeping driving forward ahead in the aorta.

The invention relates to a device for circulatory support of the heart and to a corresponding method with a holding means which is configured such that it can be implanted intracardially in the left and/or right ventricular outflow tract of the heart by means of a catheter, preferably using an endovascular method, through a femoral access and/or a percutaneous transventricular, transseptal, transapical or transvenous access, wherein the holding means comprises an anchoring means which can be fixed in the subcommissural triangle underneath the aortic valve and the pulmonary valve, respectively in the flow direction of the blood on the ventricular side of the aortic valve and the pulmonary valve, respectively, a pump which is configured such that it can be fixed in the holding means by means of a catheter, preferably using an endovascular method, through a femoral access and/or a percutaneous transventricular, transseptal, transapical or transvenous access, wherein the pump (a) can either be inserted releasably into the holding means after the holding means has been fixed by means of the anchoring means in the subcommissural triangles underneath the aortic valve and the pulmonary valve, respectively or (b) is firmly connected to the collapsible and expandable anchoring means.

Disclosed is a Cannula system (CS1 to CS3, 210, 310, 1010, 1040, 1110) comprising: a first cannula (O1 to O3) having a minimum inner diameter or width, a second cannula (I1 to I3) having a maximum outer diameter or width, wherein the minimum inner diameter or width is greater than the maximum outer diameter or width, wherein the second cannula (I1 to I3) is adapted to be guided into the first cannula (O1 to O3) such that a first lumen of the first cannula (O1 to O3) remains in the first cannula (O1 to O3) between an outer surface the second cannula (I1 to I3) and an inner surface of the first cannula (O1 to O3), and wherein the first lumen of the first cannula (O1 to O3) defines a first fluid conduit and a first lumen of the second cannula (I1 to I3) defines a second fluid conduit.

Disclosed is a Cannula system (CS1 to CS3, 210, 310, 1010, 1040, 1110) comprising: a first cannula (O1 to O3) having a minimum inner diameter or width, a second cannula (I1 to I3) having a maximum outer diameter or width, wherein the minimum inner diameter or width is greater than the maximum outer diameter or width, wherein the second cannula (I1 to I3) is adapted to be guided into the first cannula (O1 to O3) such that a first lumen of the first cannula (O1 to O3) remains in the first cannula (O1 to O3) between an outer surface the second cannula (I1 to I3) and an inner surface of the first cannula (O1 to O3), and wherein the first lumen of the first cannula (O1 to O3) defines a first fluid conduit and a first lumen of the second cannula (I1 to I3) defines a second fluid conduit.

The invention relates to an implantable, vascular support system (10) having a cannula (13) and an ultrasound measuring device (18), wherein the cannula (13) and the ultrasound measuring device (18) are disposed in the region of mutually opposite ends of the support system (10).

The invention relates to an implantable, vascular support system (10) having a cannula (13) and an ultrasound measuring device (18), wherein the cannula (13) and the ultrasound measuring device (18) are disposed in the region of mutually opposite ends of the support system (10).

The invention relates to a device (150) for monitoring the state of health of a patient (100), wherein the device (150) comprises an input interface (160) for inputting a first pressure signal (145) and a second pressure signal (155) and a processing unit (165) for processing the first pressure signal (145) and the second pressure signal (155) in order to determine a processing value (170) in order to monitor the state of health of the patient (100) based the processing value (170).

The invention relates to a device (150) for monitoring the state of health of a patient (100), wherein the device (150) comprises an input interface (160) for inputting a first pressure signal (145) and a second pressure signal (155) and a processing unit (165) for processing the first pressure signal (145) and the second pressure signal (155) in order to determine a processing value (170) in order to monitor the state of health of the patient (100) based the processing value (170).

An intra-aortic balloon pumping device and a method of assembling an intra-aortic balloon pumping device. The device includes a catheter with a separated first and second lumen for driving a first balloon with a relatively large outer diameter and a second balloon with a smaller outer diameter than the aorta when inflated, as well as a single driver unit that is coupled to the first and second lumen for pumping a driving gas into and out from each individual lumen to inflate and deflate the first and second balloons in sequence. The ratio of cross-sectional area of each lumen and the balloon volumes are dimensioned in such way that the sequence is optimized. In one form, the second lumen is a short aperture, located only between adjacent chambers that are formed by the first and second balloons.