Catheter pump with access ports

• US 10,576,192 B2
• Filed: 10/26/2017
• Issued: 03/03/2020
• Est. Priority Date: 04/15/2014
• Status: Active Grant

• Current Assignee: TC1 LLC (Abbott Laboratories Incorporated)
• Original Assignee: TC1 LLC (Abbott Laboratories Incorporated)
• Inventors: Muller, Paul F., Fitzgerald, Keif M., Keenan, Richard L.
• Primary Examiner(s): Mahmood, Nadia A
• Application Number:
  US15/794,609
• Publication Number:
  US 20180055980A1
• Time in Patent Office: 859 Days
• Field of Search: 600 16
• 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 60/211 using a jet, venturi or entrainment effect for pumping the blood
• 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 60/422 the force acting on the blood contacting member being electromagnetic, e.g. using canned motor pumps
• CPC Class Codes: A61M 60/577 High-frequency driving
• CPC Class Codes: A61M 60/857 Implantable blood tubes

Abstract

A catheter pump is disclosed herein. The catheter pump can include an elongate catheter body and an impeller assembly coupled to a distal portion of the elongate catheter body. The impeller assembly can comprise an impeller configured to rotate during operation of the catheter pump. A tube can extend through at least portions of the elongate catheter body and the impeller assembly. The tube can extend distal the impeller and can be configured to remain in the portions of the elongate catheter body and the impeller assembly during operation of the catheter pump.

Claims

1. A catheter pump comprising:

an elongate catheter body;

an impeller assembly coupled to a distal portion of the elongate catheter body, the impeller assembly including an impeller configured to rotate during operation of the catheter pump; and

a guidewire guide non-removably disposed within the elongate catheter body and extending through at least portions of the elongate catheter body and the impeller assembly, wherein the guidewire guide extends distal the impeller assembly and proximal the impeller assembly, wherein the guidewire guide defines an access channel through which a guidewire is receivable for navigating the impeller assembly through a portion of the vascular system of a patient.

2. The catheter pump of claim 1, wherein the guidewire guide comprises a tube that defines the access channel.

3. The catheter pump of claim 1 further comprising a guidewire configured to guide the impeller assembly to a chamber of a heart.

4. The catheter pump of claim 1, wherein the guidewire guide comprises at least one window through a side wall of the guidewire guide, the at least one window providing fluid communication between the access channel of the guidewire guide and blood flowing through the catheter pump.

5. The catheter pump of claim 4 further comprising a cannula disposed about the impeller assembly, wherein the at least one window comprises apertures in a sidewall of the guidewire guide providing fluid communication or access between the access channel of the guidewire guide and a volume of the cannula.

6. The catheter pump of claim 1, wherein the guidewire guide comprises a distal opening, the distal opening providing fluid communication between the access channel of the guidewire guide and blood flowing through the catheter pump.

7. The catheter pump of claim 6, wherein the guidewire guide is further configured to receive a sensor through the access channel to be disposed in the blood flowing through the catheter pump.

8. The catheter pump of claim 6, wherein the guidewire guide is further configured to receive a medication or other chemical through the access channel to be delivered to the blood flowing through the catheter pump.

9. The catheter pump of claim 6, wherein the guidewire guide is further configured to enable re-insertion of the guidewire to reposition the catheter pump during operation of the catheter pump.

10. The catheter pump of claim 1, wherein the guidewire guide is configured to pass through a portion of a lumen of the impeller assembly, the lumen extending through a tip member at a distal portion of the impeller assembly.

11. The catheter pump of claim 1, wherein the guidewire guide comprises nitinol.

12. A method of operating a catheter pump, the method comprising:

advancing a guidewire to a treatment location in a patient;

disposing a distal end of a guidewire guide over the guidewire, the guidewire guide non-removably disposed in a catheter pump comprising a catheter body and an impeller assembly coupled to a distal portion of the catheter body, the impeller assembly comprising an impeller, the guidewire guide extending through the impeller;

advancing the impeller assembly, the catheter body, and the guidewire guide along the guidewire to position the impeller assembly at the treatment location; and

activating the impeller assembly to pump blood while maintaining the guidewire guide in the catheter pump.

13. The method of claim 12 further comprising inserting a sensor through the guidewire guide and advancing the sensor to a location near the treatment location.

14. The method of claim 13 further comprising measuring a property of the blood pumped by the impeller assembly by the sensor.

15. The method of claim 12 further comprising delivering a medication or a chemical to the treatment location through the guidewire guide.

16. The method of claim 12 further comprising removing the guidewire from the patient through the guidewire guide.

17. The method of claim 16 further comprising inserting a second guidewire through the guidewire guide while the guidewire guide remains in the patient.

18. The method of claim 17 further comprising repositioning the impeller assembly using the second guidewire.