Method for operating a supply device which supplies a liquid to a channel, and supply device, hollow catheter, and catheter pump

• US 10,195,323 B2
• Filed: 10/09/2014
• Issued: 02/05/2019
• Est. Priority Date: 10/14/2013
• Status: Active Grant

• Current Assignee: ECP Entwicklungsgesellschaft mbH (Johnson & Johnson)
• Original Assignee: ECP Entwicklungsgesellschaft mbH (Johnson & Johnson)
• Inventors: Tiller, Melanie, Er, Sami, Liebing, Reiner
• Primary Examiner(s): Fairchild, Mallika D
• Application Number:
  US15/029,092
• Publication Number:
  US 20160250399A1
• Time in Patent Office: 1,580 Days
• CPC Class Codes: A61M 2205/3334 Measuring or controlling the flow rate
• CPC Class Codes: A61M 60/13 by means of a catheter allowing explantation, e.g. catheter pumps temporarily introduced via the vascular system
• 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 60/174 discharging the blood to the ventricle or arterial system via a cannula internal to the ventricle or arterial system
• CPC Class Codes: A61M 60/216 including a rotating member acting on the blood, e.g. impeller
• CPC Class Codes: A61M 60/414 transmitted by a rotating cable, e.g. for blood pumps mounted on a catheter
• CPC Class Codes: A61M 60/562 for making blood flow pulsatile in blood pumps that do not intrinsically create pulsatile flow
• CPC Class Codes: A61M 60/825 Contact bearings, e.g. ball-and-cup or pivot bearings
• CPC Class Codes: A61M 60/829 having a purge fluid supply
• CPC Class Codes: F04B 43/04 Pumps having electric drive
• CPC Class Codes: F04B 43/08 having tubular flexible members F04B43/12 takes precedence

Abstract

The present invention relates to a supply device for a channel (8), in particular within a hollow catheter (1), and to a method for operating a supply device of this type that supplies a channel (8) with a liquid and has two pumps (10, 19) arranged at points of the channel distanced from one another, characterized in that the parameter values of at least one operating parameter of both pumps are coordinated with one another in a controlled manner. As a result of the method, interruption-free and precisely controllable operation is to be ensured with simple structural means, in particular in the case of use of wear-free diaphragm pumps.

Claims

1. A hollow catheter comprising:

a channel;

a supply device for supplying the channel with a liquid, wherein the supply device comprises;

a diaphragm pump; and

a control device, which controls the diaphragm pump in respect of a generated pressure and/or a delivery rate,

wherein a sensor is assigned to the diaphragm pump, said sensor being a liquid pressure sensor, an electric sensor for detecting the power consumption of the diaphragm pump, or a flow rate sensor; and

a rotatable, flexible shaft arranged within the hollow catheter, wherein the sensor causes the control device to adapt the generated pressure and/or delivery rate of the pump as compensation for movement of liquid along the channel caused by rotation of the shaft.

2. The hollow catheter of claim 1, configured to lubricate the shaft with the liquid.

3. The hollow catheter of claim 1, wherein the sensor is an electric sensor for detecting a current consumption of the diaphragm pump.

4. The hollow catheter of claim 1, comprising one or more further diaphragm pumps, wherein:

said diaphragm pump and said one or more further diaphragm pumps are arranged at points of the channel distanced from one another;

the control device is configured to control each of the diaphragm pump and the one or more further diaphragm pumps individually in respect of the generated pressure and/or the delivery rate;

a sensor is assigned to each of one or more further diaphragm pumps;

wherein, each of the sensors assigned to the one or more further diaphragm pumps is one of a liquid pressure sensor, an electric sensor for detecting the power consumption of said one or further diaphragm pumps, and a flow rate sensor.

5. A catheter pump containing a hollow catheter according to claim 1.

6. The catheter pump of claim 5, configured for intraventricular operation within a heart.