Pump, System With A Blood Pump And Method For Producing A Blood Pump

• US 20150335804A1
• Filed: 09/25/2013
• Published: 11/26/2015
• Est. Priority Date: 09/26/2012
• Status: Active Grant

• Current Assignee: Circulite GmbH (Medtronic Plc)
• Original Assignee: Circulite GmbH (Medtronic Plc)
• Inventors: Marseille, Oliver, Kerkhoffs, Wolfgang, Keysselitz, Ellen
• Granted Patent: US 9,572,916 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: A61M 2205/3334 Measuring or controlling the flow rate
• CPC Class Codes: A61M 2205/3368 Temperature
• CPC Class Codes: A61M 2205/3375 Acoustical, e.g. ultrasonic, measuring means
• CPC Class Codes: A61M 2230/04 Heartbeat characteristics, e.g. ECG, blood pressure modulation
• CPC Class Codes: A61M 60/148 in line with a blood vessel using resection or like techniques, e.g. permanent endovascular heart assist devices
• CPC Class Codes: A61M 60/17 inside a ventricle, e.g. intraventricular balloon pumps
• CPC Class Codes: A61M 60/196 replacing the entire heart, e.g. total artificial hearts [TAH]
• CPC Class Codes: A61M 60/216 including a rotating member acting on the blood, e.g. impeller
• CPC Class Codes: A61M 60/422 the force acting on the blood contacting member being electromagnetic, e.g. using canned motor pumps

Abstract

The invention relates to a blood pump made of titanium with a measuring device for determining flow based on acoustic flow measurement methods and a blood pump with a temperature sensor and/or a pressure sensor, and a system with a blood pump and an inlet cannula and/or an outlet connector and a method for producing a blood pump with a measuring device.

Claims

1. A blood pump comprising titanium and a measuring device to determine flow based on acoustic flow measurement processes, whereby the measuring device comprises a measuring path with two coupling wedges with two transducers placed on these, wherein the measuring device is attached to the blood pump such that an installation functions as a reflector.

2. The blood pump of claim 1, wherein the installation is a motor and that the flow is measured in an annular gap.

3. The blood pump of claim 1, wherein along the circumference, several measuring paths are arranged.

4. The blood pump of claim 3, wherein the measurement paths are placed on opposite sides.

5. The pump of claim 1, further comprising a sound wall arranged between the coupling wedges.

6. The blood pump of claim 1, wherein the measuring device is sealed hermetically in a space via the pump environment.

7. The blood pump of claim 6, further comprising a grommet arranged between the space and the inside of the pump.

8. The blood pump claim 7, wherein the grommet is arranged along the longitudinal axis.

9. The blood pump of claim 1, further comprising a temperature sensor.

10. The blood pump of claim 1, further comprising an integrated pressure sensor.

11. The blood pump of claim 10, wherein the pressure sensor is placed at a pump inlet and/or a pump outlet.

12. The blood pump of claim 10, which comprises a first pressure sensor and a second pressure sensor, wherein

the first pressure sensor is arranged in such a way that it measures pressure in one heart chamber,

and the second pressure sensor is arranged in such a way that it measures pressure in the downstream vascular system.

13. A system comprising the blood pump of claim 1, and an inlet cannula comprising a pressure sensor arranged at the tip of the inlet cannula.

14. The system of claim 13, wherein the pressure sensor is placed on the inside and/or the outside of the tip.

15. The system of claim 13, further comprising a flow sensor arranged at the inlet cannula.

17. The system of claim 12, further comprising an outlet cannula with an outlet connector, wherein the outlet connector has a pressure sensor.

18. A process for the preparation of the blood pump of claim 1, comprising cutting the coupling wedges from a pump housing.

19. The process of claim 18, wherein a wall which encloses one of the coupling wedges is milled from the pump housing.

20. The process of claim 19, wherein a drill hole is drilled from inside the wall to the interior of the pump.

21. The process of claim 20, wherein the drill hole is drilled in an axial direction.

22. The process of claim 19, further comprising placing a cover on the wall, so that coupling wedges are hermetically sealed from the pump environment.

23. The process of claim 22, wherein the cover is welded to the wall.

24. The system of claim 17, wherein the flow sensor is arranged at the outlet connector.

16. (canceled)