METHODS AND APPARATUSES FOR BLOOD VESSEL OCCLUSION

• US 20140222059A1
• Filed: 03/14/2013
• Published: 08/07/2014
• Est. Priority Date: 02/05/2013
• Status: Active Grant

• Current Assignee: ArtVentive Medical Group Inc
• Original Assignee: Andrew Leopold, Kelly Jensen, Leon Rudakov
• Inventors: RUDAKOV, Leon, LEOPOLD, Andrew, JENSEN, Kelly
• Granted Patent: US 9,095,344 B2
• Time in Patent Office: Days
• US Class Current: 606/200
• CPC Class Codes: A61B 17/12031 complete occlusion
• CPC Class Codes: A61B 17/12109 in a blood vessel
• CPC Class Codes: A61B 17/12145 having a pre-set deployed three-dimensional shape methods of manufacturing A61B2017/00526
• CPC Class Codes: A61B 17/1215 comprising additional materials, e.g. thrombogenic, having filaments, having fibers, being coated
• CPC Class Codes: A61B 2017/12054 Details concerning the detachment of the occluding device from the introduction device

Abstract

An occlusion device delivery system and methods are provided in which an expandable coiled implant can be delivered using the delivery system. The system can comprise a catheter having a lumen extending between distal and proximal portions. The distal portion can have proximal and distal apertures extending through a wall of the catheter. The expandable coiled implant, which can be wound about the distal portion, can have a proximal section that extends within the proximal aperture and a distal section that can extend radially within the distal aperture. Further, the system can comprise an elongate member that extends through the lumen and engages and radially restrains the at least one of the proximal and distal sections within its respective aperture while engaged with the member.

Claims

1. An occlusion device delivery system, comprising:

a catheter having a lumen extending between distal and proximal portions, the distal portion having proximal and distal apertures extending through a wall of the catheter;

an expandable coiled implant, wound about the distal portion, having a proximal section that extends within the proximal aperture and a distal section that extends radially within the distal aperture; and

an elongate member extending through the lumen and engaging and radially restraining the at least one of the proximal and distal sections within its respective aperture while engaged with the member.

2. The device of claim 1, wherein the implant, when coiled about the distal portion, comprises a lumen and at least one of the proximal and distal sections extend across the implant lumen.

3. The device of claim 1, wherein the implant, when coiled about the distal portion, extends between the proximal and distal apertures along a generally helical path and at least one of the proximal and distal sections bends radially inwardly from the helical path.

4. The device of claim 1, wherein the proximal and distal sections extend across the catheter lumen.

5. The device of claim 4, wherein the proximal and distal sections extend across the lumen less than a diameter of the lumen.

6. The device of claim 1, wherein the elongate member extends through the catheter lumen and between at least one of the proximal and distal sections its respective aperture.

7. The device of claim 1, wherein the elongate member engages both the proximal and distal sections.

8. The device of claim 1, wherein, upon proximal withdrawal of the elongate member through the catheter lumen, the elongate member is configured to disengage and radially release the at least one of the proximal and distal sections from its respective aperture.

9. The device of claim 1, wherein the elongate member comprises a wire.

10. The device of claim 1, wherein the at least one of the proximal and distal sections have a respective end that is configured to extend radially out of its respective aperture while engaged with the member.

11. The device of claim 10, wherein the respective end is larger than the respective section extending through the aperture.

12. The device of claim 1, wherein the proximal section has a reduced cross-sectional segment that is configured to extend within the proximal aperture.

13. The device of claim 1, wherein the distal section has a reduced cross-sectional segment that is configured to extend within the distal aperture while the implant is coiled about the distal portion.

14. The device of claim 13, wherein the reduced cross-sectional segment comprises a notch, the notch and the aperture each having substantially equal lengths, transverse to an axis of the lumen.

15. The device of claim 1, wherein the apertures comprise slots that are transverse to an axis of the lumen.

16. A method of delivering an occlusion device in a blood vessel, the method comprising:

advancing a catheter in a vessel to position within the vessel an expandable coiled implant, wound about a distal portion of the catheter, the distal portion having proximal and distal apertures extending through a wall of the catheter, the implant having a proximal section that extends radially within the proximal aperture and a distal section that extends radially within the distal aperture; and

proximally withdrawing an elongate member extending through a lumen of the catheter to disengage and radially release at least one of the implant proximal and distal sections from its respective aperture.

17. The method of claim 16, further comprising:

removing a first clip from a handle assembly to permit movement of a first slider of the handle assembly to proximally withdraw the elongate member; and

proximally retracting the first slider to proximally withdraw the elongate member through the catheter lumen.

18. The method of claim 17, wherein the implant proximal section is engaged and radially restrained by the elongate member, and the implant distal section is engaged and radially restrained by a second elongate member extending through the lumen, and further comprising proximally withdrawing the second elongate member to disengage and radially release the implant distal section from its respective aperture.

19. The method of claim 18, further comprising:

removing a second clip from the handle assembly to permit movement of a second slider of the handle assembly; and

proximally retracting the second slider to proximally withdraw the second elongate member.

20. The method of claim 19, wherein the steps of removing a second clip and proximally retracting the second slider are performed after the first slider has been proximally retracted.