Curved catheter

• US 9,764,113 B2
• Filed: 12/11/2014
• Issued: 09/19/2017
• Est. Priority Date: 12/11/2013
• Status: Active Grant

• Current Assignee: Magenta Medical Ltd.
• Original Assignee: Magenta Medical Ltd.
• Inventors: Tuval, Yosi, Schwammenthal, Ehud, Glozman, Daniel
• Primary Examiner(s): Price, Nathan R
• Assistant Examiner(s): DOUBRAVA, JOHN A
• Application Number:
  US14/567,439
• Publication Number:
  US 20150157777A1
• Time in Patent Office: 1,013 Days
• CPC Class Codes: A61M 25/0023 by the form of the lumen, e.g. cross-section, variable diameter
• CPC Class Codes: A61M 25/0041 pre-formed, e.g. specially adapted to fit with the anatomy of body channels urethral catheters A61F2/04
• 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 60/226 the blood flow through the rotating member having mainly radial components
• CPC Class Codes: A61M 60/414 transmitted by a rotating cable, e.g. for blood pumps mounted on a catheter
• CPC Class Codes: A61M 60/585 User interfaces

Abstract

Apparatus and methods are described including inserting a catheter into a subject'"'"'s body via a vein of the subject'"'"'s groin. The catheter is advanced distally such that a distal end of the catheter is disposed inside the subject'"'"'s renal vein. Respective stabilizing portions of the catheter stabilize the catheter by being in contact with inner walls of, respectively, an iliac vein of the subject, and a vena cava of the subject. Subsequently, a medical device is deployed inside the renal vein by retracting the distal end of the catheter, such that the distal end of the catheter is in a retracted state, in which the respective stabilizing portions of the catheter still stabilize the catheter by being in contact with the inner walls of, respectively, the subject'"'"'s iliac vein and the subject'"'"'s vena cava. Other applications are also described.

Claims

1. A method comprising:

inserting a catheter into a body of a subject via a vein of a groin of the subject, and

advancing the catheter distally such that;

a distal end of the catheter is disposed inside a renal vein of the subject, and

respective stabilizing portions of the catheter stabilize the catheter by being in contact with inner walls of, respectively, an iliac vein of the subject, and a vena cava of the subject; and

subsequently, deploying a medical device inside the renal vein by retracting the distal end of the catheter, such that the distal end of the catheter is in a retracted state, in which the respective stabilizing portions of the catheter still stabilize the catheter by being in contact with the inner walls of, respectively, the subject'"'"'s iliac vein and the subject'"'"'s vena cava.

2. The method according to claim 1, wherein advancing the catheter distally comprises advancing the catheter distally such that a further stabilizing portion of the catheter stabilizes the catheter by being in contact with an inner wall of the renal vein.

3. The method according to claim 1, wherein retracting the distal end of the catheter comprises retracting the distal end of the catheter, such that while the distal end of the catheter is in its retracted state, a further stabilizing portion of the catheter stabilizes the catheter by being in contact with an inner wall of the renal vein.

4. The method according to claim 1, wherein advancing the catheter distally such that the distal end of the catheter is disposed inside the subject'"'"'s renal vein comprises advancing the catheter distally such that the distal end of the catheter is disposed inside a renal vein of the subject that is contralateral to the vein of the subject'"'"'s groin via which the catheter is inserted.

5. The method according to claim 1, wherein advancing the catheter distally such that the distal end of the catheter is disposed inside the subject'"'"'s renal vein comprises advancing the catheter distally such that the distal end of the catheter is disposed inside a renal vein of the subject that is ipsilateral to the vein of the subject'"'"'s groin via which the catheter is inserted.

6. The method according to claim 1, further comprising operating the medical device, inside the renal vein, while the catheter is disposed inside a body of the subject in its retracted state, such that the catheter supports the medical device during its operation.

7. The method according to claim 6, wherein deploying the device comprises deploying a radially-expandable impeller that is disposed inside a radially-expandable impeller cage, and wherein operating the medical device comprises rotating the impeller.