Implantable heart pump

Patent metadata

Field	Value
Publication number	US-2018361044-A1
Application number	US-201816111698-A
Country	US
Kind code	A1
Filing date	Aug 24, 2018
Priority date	Jun 16, 2015
Publication date	Dec 20, 2018
Grant date	—

Abstract

A heart pump is provided with a delivery channel and with a delivery device for blood, which is arranged in this delivery channel, wherein the delivery channel at least partly runs in a pump tube. A first sensor device for measuring the oxygen saturation of the blood, is provided on the heart pump, in particular on a wall of the delivery channel, in particular on the pump tube. A control device can also be integrated into the pump. Thereby, additional monitoring and control possibilities result.

First claim

1 . An implantable heart pump ( 6 ) with a delivery channel and with a delivery device ( 6 b , 6 c , 34 ) for blood, which is arranged in this delivery channel, characterised by a first sensor device ( 100 , 101 , 102 ) for measuring the oxygen saturation of the blood, said first sensor device being fastened on the heart pump, in particular on a wall of the delivery channel, in particular on a pump tube ( 6 a , 105 a ), in which the delivery channel at least partly runs.

2 . A heart pump according to claim 1 , characterised in that the first sensor device ( 100 , 101 , 102 ) comprises at least one, in particular two radiation sources ( 100 , 101 ) as well as at least one, in particular two radiation sensors ( 102 ).

3 . A heart pump according to claim 2 , characterised in that the radiation sensor ( 102 ) detects the radiation intensity in at least two different wavelength regions, independently of one another.

4 . A heart pump according to claim 2 , characterised in that the connection path between the radiation source ( 100 , 101 ) and the radiation sensor ( 102 ) lies transversely, in particularly perpendicularly, to the flow direction of the blood in the delivery channel.

5 . A heart pump according to claim 2 , characterised in that the radiation source ( 100 101 ) and the radiation sensor ( 102 ) lie opposite one another on the periphery of the pump tube ( 6 a , 105 a ).

6 . A heart pump according to claim 1 , characterised by a second sensor device for the bearing strain of a magnetic thrust bearing of a pump rotor, and/or a sensor device ( 15 , 28 ) for detecting the torque transmitted onto the rotor and/or the rotation speed, in order to be able to estimate the volume flow through the pump.

7 . A pump device with a pump according to claim 1 , with a sensor for detecting the volume flow through the pump.

8 . A pump device according to claim 7 , characterised in that the control device ( 31 ) is connected to a sensor ( 15 , 28 ) for the volume flow and/or for the detection of the pump flow and rotation speed of motor driving the pump rotor ( 34 ) and/or to a sensor for detecting the bearing strain of a magnetic thrust bearing ( 12 ) which mounts the pump rotor.

9 . A method for the operation of an implantable heart pump, characterised in that the volume flow and the oxygen saturation are determined by sensor devices ( 15 , 28 , 29 , 33 , 100 , 102 , 102 ) directly on the pump ( 6 ) and that the oxygen flow through the pump is determined from this in a continuous manner.

10 . A method according to claim 9 , characterised in that the determined oxygen saturation or the determined oxygen flow through the pump ( 6 ) forms the basis of the regulation/control of the speed/volume flow through the pump.

11 . A method according to claim 9 , characterised in that an indicator value is determined from the oxygen saturation of the blood and/or the degree of assistance given to the heart of the patient, and this indicator value is signalised.

Assignees

• Berlin Heart Gmbh

Inventors

• Wiesener Constantin
• Karch Dominik

Classifications

• A61M2205/3334

  Measuring or controlling the flow rate · CPC title

• A61M2205/3313

  used specific wavelengths · CPC title

• A61M2205/3379

  Masses, volumes, levels of fluids in reservoirs, flow rates · CPC title

• A61M2230/205

  partial oxygen pressure (P-O2) · CPC title

• A61M2205/3303

  Using a biosensor · CPC title