Single access flow-reversal catheter devices and methods

• US 9,668,743 B2
• Filed: 06/23/2015
• Issued: 06/06/2017
• Est. Priority Date: 04/16/2012
• Status: Active Grant

• Current Assignee: W. L. Gore & Associates (W.L. Gore & Associates)
• Original Assignee: W. L. Gore & Associates (W.L. Gore & Associates)
• Inventors: Cully, Edward H., Vonesh, Michael J., Trapp, Benjamin M.
• Primary Examiner(s): MARCETICH, ADAM M
• Application Number:
  US14/747,680
• Publication Number:
  US 20150289880A1
• Time in Patent Office: 714 Days
• CPC Class Codes: A61B 17/12036 partial occlusion
• CPC Class Codes: A61B 17/12045 double occlusion, e.g. during anastomosis
• CPC Class Codes: A61B 17/12109 in a blood vessel
• CPC Class Codes: A61B 17/12113 within an aneurysm
• CPC Class Codes: A61B 17/12118 for positioning in conjunction with a stent
• CPC Class Codes: A61B 17/12136 Balloons
• CPC Class Codes: A61B 17/12168 having a mesh structure A61B17/1214 takes precedence
• CPC Class Codes: A61B 17/22 Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for dilators A61M29/00
• CPC Class Codes: A61B 2017/00986 Malecots, e.g. slotted tubes, of which the distal end is pulled to deflect side struts
• CPC Class Codes: A61B 2017/22054 with two balloons
• CPC Class Codes: A61B 2017/22079 with suction of debris
• CPC Class Codes: A61B 2217/005 with suction drainage system
• CPC Class Codes: A61F 2/011 Instruments for their placement or removal
• CPC Class Codes: A61F 2/013 Distal protection devices, i.e. devices placed distally in combination with another endovascular procedure, e.g. angioplasty or stenting
• CPC Class Codes: A61M 1/34 Filtering material out of the blood by passing it through a membrane, i.e. hemofiltration or diafiltration
• CPC Class Codes: A61M 1/3403 Regulation parameters
• CPC Class Codes: A61M 1/3621 Extra-corporeal blood circuits single-needle circuits A61M1/30
• CPC Class Codes: A61M 2025/1015 having two or more independently movable balloons where the distance between the balloons can be adjusted, e.g. two balloon catheters concentric to each other forming an adjustable multiple balloon catheter system
• CPC Class Codes: A61M 25/1011 Multiple balloon catheters

Abstract

Embodiments herein include devices and methods directed toward creating reverse flow within a vessel and thereby providing protection against embolic debris. Embodiments comprise a catheter and a plurality of occluders that are expandable and adjustable within a lumen to create low-pressure areas that reroute blood flow and embolic debris therein.

Claims

1. A method for providing embolic protection comprising the steps of providing a single access catheter device comprising:

a catheter having a proximal and distal region with a lumen therethrough;

a first occluder located within the distal region of the catheter;

a second occluder located proximal to the first occluder;

a return port located proximal to the second occluder; and

a conduit connecting the distal the end of catheter to the return port;

locating the first occluder in a vessel proximate to a treatment site;

locating the second occluder in an aorta downstream of a renal artery;

expanding the first occluder and the second occluder whereby blood flows through the conduit from a distal end of the catheter to the return port.

2. The method of claim 1, wherein the conduit comprises the lumen of the catheter and the interstitial space between an introducer sheath and the catheter.

3. The method of claim 1, further comprising the step of filtering the blood flowing through the conduit to remove at least a portion of embolic debris therein.

4. The method of claim 1, wherein the vessel is a cerebral vessel.

5. The method of claim 1, further comprising the step of expanding a third occluder distal to the first occluder to occlude a branch vessel.

6. The method of claim 5, wherein the branch vessel is the external carotid artery.

7. The method of claim 1, further comprising the step of delivering a medical device through the lumen to the treatment site.

8. The method of claim 7, wherein the medical device comprises a stent.