Vascular device marker attachment

Patent metadata

Field	Value
Publication number	US-10799332-B2
Application number	US-201816053089-A
Country	US
Kind code	B2
Filing date	Aug 2, 2018
Priority date	Feb 12, 2016
Publication date	Oct 13, 2020
Grant date	Oct 13, 2020

Abstract

A medical device can include an elongate manipulation member, and a thrombectomy device connected to the elongate manipulation member. The thrombectomy device can have a first configuration and a second configuration, the thrombectomy device being expandable from the first configuration to the second configuration. The thrombectomy device can include an arcuate marker-mounting projection attached to a portion of the thrombectomy device configured to contact a thrombus. A marker can be coupled to, and extending around, the arcuate marker-mounting projection with the marker and the arcuate marker-mounting projection contacting each other at three discrete locations. A method for engaging a thrombus can include advancing a thrombectomy device to a location radially adjacent to a thrombus in a blood vessel. The thrombectomy device can be positioned such that a marker, disposed at a proximal end of a working length of thrombectomy device, is proximal to or longitudinally aligned with a proximal end of the thrombus, and can be expanded into the thrombus.

First claim

What is claimed is:

1. A medical device comprising:
an elongate manipulation member; and
a thrombectomy device coupled to the elongate manipulation member, the thrombectomy device extending between a first end and a second end and expandable from a first configuration to a second configuration,
the thrombectomy device comprising (i) a plurality of arcuate marker-mounting projections, each attached to a portion of the thrombectomy device configured to contact a thrombus, (ii) a plurality of struts forming a plurality of cells, each of the projections extending from one of the struts disposed between the first and second ends of the thrombectomy device, and (iii) a plurality of markers, each marker being attached to one of the arcuate marker-mounting projections and contacting the one of the projections at one location on a convex surface of the one of the projections and at two locations on a concave surface of the one of the projections,
wherein at least some of the marker-mounting projections are laterally aligned in the absence of external forces on the thrombectomy device, and wherein at least some of the laterally aligned marker-mounting projections are arranged such that they are disposed laterally farther from each other when the thrombectomy device is in the second configuration than they are when the thrombectomy device is in the first configuration.

2. The medical device of claim 1 , wherein each of the concave surfaces faces away from the strut to which it is attached such that each of the concave surfaces faces towards an interior of the corresponding cell.

3. The medical device of claim 1 , wherein the convex surface is opposite the concave surface along the one of the projections.

4. The medical device of claim 1 , wherein the convex surface is parallel to the concave surface.

5. The medical device of claim 1 , wherein each of the projections is separated from all of the other projections by at least one strut length.

6. The medical device of claim 1 , wherein at least one of the projections is disposed at a proximal end of a working length of the thrombectomy device, and wherein the proximal end of the working length is distal to and spaced apart from the proximal end of the thrombectomy device.

7. The medical device of claim 6 , wherein the at least one of the projections is within 5 millimeters of the proximal end of the working length.

8. The medical device of claim 1 , wherein a plurality of the projections are disposed at a proximal end of a working length of the thrombectomy device, and wherein the proximal end of the working length is distal to and spaced apart from the proximal end of the thrombectomy device.

9. The medical device of claim 1 , wherein each of the markers is generally cylindrical.

10. The medical device of claim 1 , wherein each of the projections is cantilevered from the strut of the thrombectomy device to which it is attached.

11. A medical device comprising:
an elongate manipulation member;
a thrombectomy device connected to the elongate manipulation member, the thrombectomy device having a plurality of struts forming a plurality of cells;
an arcuate marker-mounting projection extending from one of the struts disposed along a portion of the thrombectomy device configured to contact a thrombus; and
a marker coupled to and extending around the projection, wherein the marker and the projection contact each other at three discrete locations, and wherein the marker and the projection contact each other at one location on a convex side of the projection, and the marker and the projection contact each other at two locations on a concave side of the projection.

12. The medical device of claim 11 , wherein the one contact location on the convex side is between the two contact locations on the concave side.

13. The medical device of claim 11 , wherein the convex side of the projection and the concave side of the projection are parallel.

14. The medical device of claim 11 , wherein the marker is generally cylindrical.

15. The medical device of claim 11 , wherein the projection is cantilevered from the strut of the thrombectomy device to which it is attached.

16. The medical device of claim 11 , wherein the projection is disposed at a proximal end of a working length of the thrombectomy device, and wherein the proximal end of the working length is distal to and spaced apart from the proximal end of the thrombectomy device.

17. The medical device of claim 16 , wherein the projection is within 5 millimeters of the proximal end of the working length.

18. The medical device of claim 11 , wherein the thrombectomy device is configured to self-expand.

Assignees

• Covidien Lp

Inventors

• Epstein Evan
• Brown Kenneth

Classifications

• A61B90/39 Primary

  Markers, e.g. radio-opaque or breast lesions markers · CPC title

• A61B2018/0041

  Removal of thrombosis · CPC title

• A61F2002/016

  made from wire-like elements · CPC title

• A61F2/011

  Instruments for their placement or removal · CPC title

• A61B17/22031

  Gripping instruments, e.g. forceps, for removing or smashing calculi (A61B17/221 takes precedence) · CPC title