MONORAIL NEURO-MICROCATHETER FOR DELIVERY OF MEDICAL DEVICES TO TREAT STROKE, PROCESSES AND PRODUCTS THEREBY

• US 20100100106A1
• Filed: 04/10/2009
• Published: 04/22/2010
• Est. Priority Date: 04/11/2008
• Status: Active Grant

• Current Assignee: Covidien LP (Medtronic Plc)
• Original Assignee: Mindframe LLC
• Inventors: Ferrera, David A.
• Granted Patent: US 8,545,514 B2
• Time in Patent Office: Days
• US Class Current: 606/127
• CPC Class Codes: A61M 2025/0042 Microcatheters, cannula or the like having outside diameters around 1 mm or less
• CPC Class Codes: A61M 2025/0183 Rapid exchange or monorail catheters
• CPC Class Codes: A61M 2210/0693 Brain, cerebrum
• CPC Class Codes: A61M 25/0009 Making of catheters or other medical or surgical tubes
• CPC Class Codes: A61M 25/0021 characterised by the form of the tubing A61M25/0054 takes precedence
• CPC Class Codes: Y10T 29/49826 Assembling or joining

Abstract

Devices, processes and systems facilitate and enable treatment of acute stroke conditions, providing reperfusion while therapy is made available by preserving structure in the arterial tree. Using a Rapid Exchange approach with at least dual lumens in a microcatheter facilitates embolus/clot removal without damaging sensitive vasculature.

Claims

1. A process for reperfusion during embolus removal comprising;

providing a rapid exchange system comprising at least two lumens, a microcatheter, and a stroke device;

accessing a desired treatment site within a blood vessel in the brain;

emplacing the stroke device at the desired treatment site;

establishing reperfusion of the blood vessel while maintaining a connection to the stroke device;

maintaining arterial access including greater support to the arterial tree; and

,

addressing at least one of a subject embolus, blood clot, and thrombus while reperfusion continues.

2. The process of claim 1, wherein capture of the at least one of a subject embolus, blood clot, and thrombus is facilitated due to support in the vessel.

3. The process of claim 2, whereby the support provided mitigates or prevents proximal vessel buckling or kinking during tensioning upon embolus removal.

4. The process of claim 3, wherein proximal vessel ovalization is prevented.

5. The process of claim 4, wherein stripping of captured material is prevented.

6. A product by the process of claim 1.

7. A process for making a neuro-monorail microcatheter comprising:

providing a first microcatheter;

cutting a distal segment at between about 5 cm and 50 cm;

aligning the distal segment adjacent to a distal section of a second microcatheter;

placing guidewires in each microcatheter to maintain alignment; and

applying short segments of PET along the length to secure and maintain alignment and adjacent status of the finish device.

8. A product, by the process of claim 7.

9. A reperfusion device, comprising, in combination:

a rapid exchange system comprising a first lumen and a second lumen;

a microcatheter disposed within the first lumen, comprising a stroke device, wherein the stroke device is expandable; and

a guidewire disposed within the second lumen.

10. The reperfusion device of claim 9, wherein the stroke device comprises radiographic marking elements for visualization during placement.

11. The reperfusion device of claim 10, wherein the radiographic marking elements are disposed at a distal end of the stroke device.

12. The reperfusion device of claim 9, wherein the stroke device is tethered and accessible through the microcatheter.

13. The reperfusion device of claim 9, wherein the stroke device is retrievable through the microcatheter.