CLOT RETRIEVAL DEVICE FOR REMOVING CLOT FROM A BLOOD VESSEL

• US 20160106448A1
• Filed: 12/31/2015
• Published: 04/21/2016
• Est. Priority Date: 03/14/2013
• Status: Active Grant

• Current Assignee: Neuravi Limited (Johnson & Johnson)
• Original Assignee: Neuravi Limited (Johnson & Johnson)
• Inventors: BRADY, Eamon, CASEY, Brendan, GILVARRY, Michael, HARDIMAN, David, McARDLE, Kevin, RAZAVI, Mahmood, VALE, David
• Granted Patent: US 10,610,246 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: A61B 17/12109 in a blood vessel
• CPC Class Codes: A61B 17/221 Gripping devices in the form of loops or baskets for gripping calculi or similar types of obstructions surgical snare instruments A61B17/32056
• CPC Class Codes: A61B 17/320725 with radially expandable cutting or abrading elements A61B17/32075 takes precedence
• CPC Class Codes: A61B 2017/00358 Snares for grasping
• CPC Class Codes: A61B 2017/00778 Operations on blood vessels A61B2017/22097, A61B2017/320741 take precedence
• CPC Class Codes: A61B 2017/22034 for gripping the obstruction or the tissue part from inside
• CPC Class Codes: A61B 2017/2212 having a closed distal end, e.g. a loop
• CPC Class Codes: A61B 2017/2215 having an open distal end
• 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 29/00 Dilators with or without means for introducing media, e.g. remedies instruments for performing visual medical inspections of cavities or tubes of the body A61B1/00

Abstract

A clot retrieval device 1 for removing occlusive clot from a blood vessel, the device comprises an inner elongate body 3 having a collapsed delivery configuration and an expanded deployed configuration and an outer elongate body 2 at least partially overlying the inner elongate body 2. The outer elongate body 2 is expandable to a radial extent which is greater than the radial extent of the inner body 3 in the deployed configuration to define a clot reception space 11. The outer elongate body 2 comprises a distal end portion 24,49 and the inner elongate body 3 comprises a main body portion 10 and a distal portion which extends in the deployed configuration towards the outer elongate body 2 to a greater extent than the main body portion. The distal portion 10 of the inner elongate member 3 and the distal end portion 24,49 of the outer elongate body 2 together define a three dimensional protective structure to substantially prevent distal egress of clot or clot fragments from the device.

Claims

1-24. -24. (canceled)

25. A clot retrieval device for removing clot from a blood vessel, the device having a collapsed delivery configuration and an expanded deployed configuration and comprising:

an inner body; and

an outer body at least partially overlying the inner body and including a closed distal end, the outer body being expandable to a radial extent which is greater than the radial extent of the inner body in the deployed configuration to provide a clot reception space radially between the inner body and the outer body;

in the deployed configuration and absent external forces, a central longitudinal axis of the inner body is radially offset relative to a central longitudinal axis of the outer body.

26. The device of claim 25, wherein each of the inner body and the outer body includes a plurality of struts, wherein a porosity provided by the plurality of struts of the inner body is greater than a porosity provided by the plurality of struts of the outer body.

27. The device of claim 25, further including an elongate member having a distal end coupled to a proximal end of at least one of the inner body and the outer body at a connection point.

29. The device of claim 25, wherein the inner body comprises a plurality of struts, wherein adjacent struts of the plurality of struts of the inner body define inner body cells, and wherein the outer body comprises a plurality of struts, wherein adjacent struts of the plurality of struts of the outer body define outer body cells, wherein the outer body cells are larger than the inner body cells.

30. The device of claim 25, wherein the outer body comprises a plurality of struts and the plurality of struts of the outer body define a plurality of strut segments, wherein the outer body further includes at least one clot inlet mouth positioned between adjacent strut segments.

31. The device of claim 25, wherein the clot reception space is eccentrically arranged about the central longitudinal axis of the outer body.

32. A clot retrieval device for removing clot from a blood vessel, the device having a collapsed delivery configuration and an expanded deployed configuration and comprising:

an inner body;

an outer body at least partially overlying the inner body, the outer body being expandable to a radial extent which is greater than the radial extent of the inner body in the deployed configuration to provide a clot reception space radially between the inner body and the outer body; and

a distal net at a distal end of the device;

in the deployed configuration and absent external forces, a central longitudinal axis of the inner body is radially offset relative to a central longitudinal axis of the outer body.

33. The device of claim 32, wherein each of the inner body and the outer body includes a plurality of struts, wherein a porosity provided by the struts of the inner body is less than a porosity provided by the struts of the outer body.

34. The device of claim 32, further including an elongate member having a distal end coupled to a proximal end of at least one of the inner body and the outer body at a connection point.

35. The device of claim 34, wherein the connection point is radially offset relative to the central longitudinal axis of the outer body.

36. The device of claim 32, wherein the inner body comprises a plurality of struts, wherein adjacent struts of the plurality of struts of the inner body define inner body cells, and wherein the outer body comprises a plurality of struts, wherein adjacent struts of the plurality of struts of the outer body define outer body cells, wherein the outer body cells are larger than the inner body cells.

37. The device of claim 32, wherein the distal net includes one or more of a plurality of fibers, a plurality of wires, and a plurality struts.

38. The device of claim 32, wherein the clot reception space is eccentrically arranged about the central longitudinal axis of the outer body.

39. A clot retrieval device for removing clot from a blood vessel, the device having a collapsed delivery configuration and an expanded deployed configuration and comprising:

an inner body; and

an outer body at least partially overlying the inner body, the outer body being expandable to a radial extent which is greater than the radial extent of the inner body in the deployed configuration to provide a clot reception space radially between the inner body and the outer body;

each of the inner body and the outer body are self-expandable, and

in the deployed configuration and absent external forces, a central longitudinal axis of the inner body is radially offset relative to a central longitudinal axis of the outer body.

40. The device of claim 39, wherein each of the inner body and the outer body includes a plurality of struts, wherein a porosity provided by the plurality of struts of the inner body is less than a porosity provided by the plurality of struts of the outer body.

41. The device of claim 39, further including an elongate member having a distal end coupled to a proximal end of at least one of the inner body and the outer body.

42. The device of claim 39, wherein the inner body comprises a plurality of struts, wherein adjacent struts of the plurality of struts of the inner body define inner body cells, and wherein the outer body comprises a plurality of struts, wherein adjacent struts of the plurality of struts of the outer body define outer body cells, wherein the outer body cells are larger than the inner body cells.

43. The device of claim 39, wherein the outer body comprises a plurality of struts and the plurality of struts of the outer body define a plurality of strut segments, wherein the outer body further includes at least one clot inlet mouth positioned between adjacent strut segments.

44. The device of claim 39, wherein the clot reception space is eccentrically arranged about the central longitudinal axis of the outer body.