Catheter system and intravascular blood pump having said catheter system

Patent metadata

Field	Value
Publication number	US-2018264182-A1
Application number	US-201815985199-A
Country	US
Kind code	A1
Filing date	May 21, 2018
Priority date	Apr 27, 2012
Publication date	Sep 20, 2018
Grant date	—

Abstract

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 ( 28 A). 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.

First claim

1 - 15 . (canceled)

16 . A system comprising a catheter having a kink sensor, the kink sensor comprising at least one optical fiber having segments with different light-transmitting properties.

17 . The system according to claim 16 , wherein the kink sensor extends over the total length of the catheter, and wherein the kink sensor is arranged for detecting a kinking of the catheter over the total length of the catheter.

18 . The system according to claim 16 , wherein the optical fiber comprises a glass fiber and possesses a diameter of 120 μm or less.

19 . The system according to claim 16 , wherein the optical fiber comprises a plastic fiber and possesses a diameter of 250 μm or less.

20 . The system according to claim 16 , wherein the optical fiber is part of an optical pressure sensor.

21 . The system according to claim 20 , wherein the pressure sensor has a sensor head, the sensor head being disposed on a distal, soft-flexible tip of the catheter.

22 . The system according to claim 16 , wherein the optical fiber of the catheter is attached to an evaluation device, the evaluation device arranged for evaluating a preset light quantity transmitted through the optical fiber to determine whether a part of the light quantity is coupled out of the optical fiber along the length of the optical fiber.

23 . The system according to claim 22 , wherein the evaluation device is arranged for generating an alarm when the coupled-out part of the light quantity reaches or exceeds a preset limiting value.

24 . The system according to claim 16 , wherein the system is part of an intravascular blood pump.

25 . A system comprising a catheter having a kink sensor, the kink sensor comprising a plurality of optical fibers of different length.

26 . The system according to claim 25 , wherein the optical fiber is part of an optical pressure sensor.

27 . The system according to claim 25 , wherein the optical fiber of the catheter is attached to an evaluation device which is arranged for evaluating 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.

28 . The system according to claim 25 , wherein the system is part of an intravascular blood pump.

29 . A system comprising a catheter having a kink sensor, the kink sensor comprising at least one optical fiber laid freely movably in a lumen, the lumen comprising a material comprising a shape-memory alloy.

30 . The system according to claim 29 , wherein the optical fiber is part of an optical pressure sensor.

31 . The system according to claim 29 , wherein the optical fiber of the catheter is attached to an evaluation device, the evaluation device being arranged for evaluating a preset light quantity transmitted through the optical fiber to determine whether a part of the light quantity is coupled out of the optical fiber along the length of the optical fiber.

32 . The system according to claim 29 , wherein the system is part of an intravascular blood pump.

33 . A system comprising a catheter having a kink sensor, the kink sensor comprising at least one optical fiber laid freely movably in a lumen, the lumen comprising a polymer material which is anti-friction-coated on the inside.

34 . The system according to claim 33 , wherein the optical fiber is part of an optical pressure sensor.

35 . The system according to claim 33 , wherein the pressure sensor has a sensor head which is disposed on a distal, soft-flexible tip of the catheter.

36 . The system according to claim 33 , wherein the system is part of an intravascular blood pump.

Assignees

• Abiomed Europe Gmbh

Inventors

• Spanier Gerd
• Siess Thorsten

Classifications

• A61M1/1086 Primary

  Human Necessities · mapped topic

• A61M2205/0266

  Shape memory materials · CPC title

• A61M2205/18

  with alarm · CPC title

• A61B2562/0233

  Special features of optical sensors or probes classified in A61B5/00 · CPC title

• A61B2562/0247

  Pressure sensors · CPC title