CLOT RETRIEVAL DEVICE FOR REMOVING OCCLUSIVE CLOT FROM A BLOOD VESSEL

• US 20150164523A1
• Filed: 02/23/2015
• Published: 06/18/2015
• Est. Priority Date: 03/14/2013
• Status: Active Grant

• Current Assignee: Neuravi Limited (Johnson & Johnson)
• Original Assignee: Neuravi Limited (Johnson & Johnson)
• Inventors: RAZAVI, Mahmood, BRADY, Eamon, CASEY, Brendan, GILVARRY, Michael, HARDIMAN, David, McARDLE, Kevin, VALE, David
• Granted Patent: US 9,445,829 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 occlusive clot from a blood vessel, the device comprising:

an inner body having a collapsed delivery configuration and an expanded deployed configuration; 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 define a clot reception space;

the outer body comprises a distal end portion; and

the inner body comprises a main body portion and a distal portion, the distal portion of the inner body

being located at the distal end portion of the outer body, and

extending in the deployed configuration towards the outer body to a greater extent than the main body portion.

30. The clot retrieval device of claim 25, wherein the distal end portion of the outer body comprises distal struts.

31. The clot retrieval device of claim 30, wherein the distal struts of the distal end portion of the outer member are configured in a conical shape.

34. The clot retrieval device of claim 25, wherein the distal portion of the inner body and the distal end portion of the outer body together define a protective structure configured to prevent distal egress of clot or clot fragments from the device, wherein the protective structure includes a plurality of fibres comprising a distal net.

35. The clot retrieval device of claim 25, wherein the outer body comprises a first monolithic structure and the inner body comprises a second monolithic structure.

36. The clot retrieval device of claim 25, wherein the outer body comprises at least two longitudinally spaced-apart segments.

37. The clot retrieval device of claim 36, wherein at least one hinge is provided between the segments.

26. The clot retrieval device of claim 26, wherein the distal portion of the inner member includes a plurality of struts each having a first end coupled to the main body portion of the inner member and a second end coupled to each other so as to form a connection point.

27. The clot retrieval device of claim 26, wherein the plurality of struts of the distal portion are spiraled.

28. The clot retrieval device of claim 26, wherein the plurality of struts of the distal portion are configured in a volumetric pattern.

29. The clot retrieval device of claim 26, wherein the plurality of struts of the distal portion are configured in a bulged or flared pattern.

32. The clot retrieval device of claim 26, wherein at least some of the struts comprise an attachment point for reception of a fiber.

33. The clot retrieval device of claim 32, wherein each attachment point comprises an eyelet.

38. A clot retrieval device for removing occlusive clot from a blood vessel, the device comprising:

an inner body having a collapsed delivery configuration and an expanded deployed configuration;

an outer body at least partially overlying the inner body and including a distal end portion, 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 define a clot reception space; and

wherein the inner body comprises a main body portion and a distal portion which extends in the deployed configuration towards the outer body to a greater extent than the main body portion, wherein the distal portion includes a plurality of struts each having a first end coupled to the main body portion and a second end coupled to each other so as to form a connection point.

39. The clot retrieval device of claim 38, wherein the outer body comprises at least two longitudinally spaced-apart segments.

40. The clot retrieval device of claim 39, wherein at least one hinge is provided between the segments.

41. The clot retrieval device of claim 38, wherein the plurality of struts of the distal portion are spiraled.

42. The clot retrieval device of claim 38, wherein the plurality of struts of the distal portion are configured in a volumetric pattern.

43. The clot retrieval device of claim 38, wherein the distal portion of the inner body and the distal end portion of the outer body collectively define a protective structure including a plurality of fibers comprising a distal net.