Body lumen device anchor, device and assembly

• US 20050187619A1
• Filed: 11/19/2004
• Published: 08/25/2005
• Est. Priority Date: 05/08/2002
• Status: Active Grant

• Current Assignee: Cardiac Pacemakers Incorporated (Boston Scientific Corporation)
• Original Assignee: Cardiac Pacemakers Incorporated (Boston Scientific Corporation)
• Inventors: Mathis, Mark L., Beeson, Cruz, Kowalsky, Leonard, Reuter, David G.
• Granted Patent: US 8,062,358 B2
• Time in Patent Office: Days
• US Class Current: 623/2.360
• CPC Class Codes: A61F 2/2451 Inserts in the coronary sinus for correcting the valve shape
• CPC Class Codes: A61F 2/2466 Delivery devices therefor
• CPC Class Codes: A61F 2002/91591 Locking connectors, e.g. using male-female connections
• CPC Class Codes: A61F 2210/0014 using shape memory or superelastic materials, e.g. nitinol
• CPC Class Codes: A61F 2220/0091 connected by a hinged linkage mechanism, e.g. of the single-bar or multi-bar linkage type
• CPC Class Codes: A61F 2230/0023 triangular
• CPC Class Codes: A61F 2250/0004 adjustable
• CPC Class Codes: A61F 2250/0008 for adjusting a position by translation along an axis or two perpendicular axes
• CPC Class Codes: A61F 2250/0012 for adjusting elasticity, flexibility, spring rate or mechanical tension
• CPC Class Codes: A61F 2250/0086 with bar code
• CPC Class Codes: A61F 2310/00017 Iron- or Fe-based alloys, e.g. stainless steel
• CPC Class Codes: A61F 2310/00023 Titanium or titanium-based alloys, e.g. Ti-Ni alloys

Abstract

An anchor anchors a therapeutic device having an elongated body within a body lumen. The anchor includes a fixation member. carried on the device which is adjustable from a first configuration that permits placement of the device in the body lumen to a second configuration that anchors the device within the body lumen. The anchor further includes a lock that locks the fixation member in the second configuration. The fixation member may be locked in any one of a plurality of intermediate points between the first configuration and a maximum second configuration.

Claims

1-42. -42. (canceled)

43. A mitral valve regurgitation treatment device comprising:

an elongated body dimensioned to be placed in a coronary sinus of a heart adjacent a mitral valve annulus; and

an anchor adjustable from a first configuration that permits placement of the device in the coronary sinus to a second configuration that anchors the device within the coronary sinus, the anchor comprising;

an elongated fixation member having a first end coupled to the device body and a second end opposite the first end, wherein the fixation member extends along the device body closely spaced to the device body when the anchor is in the first configuration and wherein the fixation member is pivoted from the device body when the anchor is in the second configuration to engage the coronary sinus and anchor the device in the coronary sinus; and

a support member rendering the fixation member substantially rigid when the anchor is in the second configuration.

44. The device of claim 43 further comprising a lock that locks the fixation member in the anchor'"'"'s second configuration.

45. The device of claim 43 wherein the support member comprises a first end and a second end, the first end being connected to the fixation member.

46. The device of claim 45 wherein the fixation member and the support member comprise a single wire.

47. The device of claim 45 wherein the support member second end is slidable on the device body.

48. The device of claim 45 further comprising a lock that locks the fixation member in the anchor'"'"'s second configuration by locking the support member second end on the device body.

49. The device of claim 48 wherein the lock comprises a loop formed at the fixation member second end.

50. The device of claim 48 wherein the lock comprises an enlarged portion of the device body.

51. The device of claim 43 wherein the fixation member is a first fixation member and the support member is a first support member, the anchor further comprising:

a second fixation member having a first end coupled to the device body and a second end opposite the first end, wherein the second fixation member extends along the device body closely spaced to the device body when the anchor is in the first configuration and wherein the second fixation member is pivoted from the device body when the anchor is in the second configuration to engage the coronary sinus and anchor the device in the coronary sinus, and

a second support member rendering the second fixation member substantially rigid when the anchor is in the second configuration.

52. The device of claim 51 wherein the first fixation member and the first support member are formed from a single wire.

53. The device of claim 51 wherein the first fixation member, the second fixation member, the first support member and the second support member are formed from a single wire.

54. The device of claim 53 further comprising a lock, the lock comprising a loop formed in the wire.

55. The device of claim 54 wherein the lock further comprises an enlarged portion of the device.

56. The device of claim 53 wherein the wire is arranged in a figure eight configuration.

57. The device of claim 53 further comprising a crimp crimping the wire.

58. A method of treating mitral valve regurgitation comprising:

inserting into a coronary sinus adjacent the mitral valve a device comprising distal and proximal anchors;

expanding the distal anchor to an expanded configuration by applying an external force to move a first portion of the distal anchor with respect to a second portion of the distal anchor;

locking the distal anchor in the expanded configuration; and

pulling the proximal anchor proximally to reduce mitral valve regurgitation.

59. The method of claim 58 wherein the expanding step comprises pushing the first portion of the distal anchor distally.

60. The method of claim 58 wherein the expanding step comprises holding the device stationary.

61. The method of claim 58 wherein the locking step comprises moving the first portion of the distal anchor to a locked position.

62. The method of claim 61 wherein the locking step comprises moving the first portion of the distal anchor distally to a locked position.

63. The method of claim 58 wherein the pulling step comprises pulling the device proximally with a tether.

64. The method of claim 58 further comprising expanding the proximal anchor.

65. The method of claim 64 wherein the step of expanding the proximal anchor is performed prior to the pulling step.

66. The method of claim 58 further comprising monitoring a patient parameter related to mitral valve regurgitation.