Medical Device for Treating A Heart Valve Insufficiency or Stenosis

• US 20100174362A1
• Filed: 07/02/2009
• Published: 07/08/2010
• Est. Priority Date: 04/13/2007
• Status: Active Grant

• Current Assignee: JenaValve Technology, Inc.
• Original Assignee: JenaValve Technology, Inc.
• Inventors: Jung, Johannes, Straubinger, Helmut
• Granted Patent: US 9,445,896 B2
• Time in Patent Office: Days
• US Class Current: 623/2.110
• CPC Class Codes: A61F 2/2418 Scaffolds therefor, e.g. support stents
• CPC Class Codes: A61F 2/2427 Devices for manipulating or deploying heart valves during implantation
• CPC Class Codes: A61F 2/2436 Deployment by retracting a sheath
• CPC Class Codes: A61F 2/9517 handle assemblies therefor

Abstract

A medical device for treating a heart valve insufficiency, with an endoprosthesis which can be introduced into a patient'"'"'s body and expanded to secure a heart valve prosthesis in the patient'"'"'s aorta with a catheter. In an embodiment, the endoprosthesis has a plurality of positioning arches configured to be positioned with respect to a patient'"'"'s aorta and a plurality of retaining arches to support a heart valve prosthesis. The endoprosthesis includes a collapsed mode during the process of introducing it into the patient'"'"'s body and an expanded mode when it is implanted. The endoprosthesis may be introduced into a patient'"'"'s body and expanded via a catheter. In an embodiment, the catheter has first and second slide mechanisms configured to independently manipulate first and second sleeve elements to sequentially expand the endoprosthesis from the collapsed mode to the expanded mode.

Claims

1-63. -63. (canceled)

64. A method of implanting an endoprosthesis including a plurality of positioning arches, a plurality of retaining arches, and a plurality of retaining elements, the method comprising:

positioning the endoprosthesis relative to a native heart valve;

manipulating a first slide mechanism of a catheter to affect movement of a first sleeve element to uncover the plurality of positioning arches;

positioning the positioning arches within pockets of the native heart valve;

manipulating a second slide mechanism of the catheter to affect movement of a second sleeve element to uncover the plurality of retaining arches; and

further manipulating the first slide mechanism to affect further movement of the first sleeve to uncover the plurality of retaining elements.

65. The method of claim 64, further including removing a temporary stop mechanism before the step of further manipulating the first slide mechanism.

66. The method of claim 65, further including selectively disengaging a locking element from the temporary stop mechanism before removing the temporary stop mechanism.

67. The method of claim 64, wherein the first slide mechanism is configured to move independently of the second slide mechanism.

68. The method of claim 64, wherein the first slide mechanism is configured to move in the proximal direction of the catheter to affect movement of the first sleeve element in the proximal direction to uncover the plurality of positioning arches.

69. The method of claim 68, wherein the first slide mechanism is configured to further move in the proximal direction of the catheter to affect further movement of the first sleeve element in the proximal direction to uncover the plurality of retaining elements.

70. The method of claim 64, wherein the second slide mechanism is configured to move in the distal direction of the catheter to affect movement of the second sleeve element in the distal direction to uncover the plurality of retaining arches.

71. The method of claim 64, wherein uncovering the plurality of retaining elements automatically disengages the plurality of retaining elements from a plurality of retaining pockets disposed within a retaining element of the catheter.

72. The method of claim 64, further including selectively disengaging a locking element from the first slide mechanism before manipulating the first slide mechanism to affect movement of the first sleeve element to uncover the plurality of positioning arches.

73. The method of claim 64, further including selectively disengaging a locking element from the second slide mechanism before manipulating the second slide mechanism to affect movement of the second sleeve element to uncover the plurality of retaining arches.

74. A method of explanting an endoprosthesis including a plurality of positioning arches, a plurality of retaining arches, and a plurality of retaining elements, the method comprising:

manipulating a first slide mechanism of a catheter to affect movement of a first sleeve to collapse a portion of the endoprosthesis and cover the plurality of retaining elements;

manipulating a second slide mechanism to affect movement of a second sleeve element to collapse the plurality of retaining arches; and

further manipulating the first slide mechanism to affect further movement of the first sleeve element to collapse the plurality of positioning arches.

75. The method of claim 74, wherein the first slide mechanism is configured to move independently of the second slide mechanism.

76. The method of claim 74, wherein the first slide mechanism is configured to further move in a distal direction of the catheter to affect further movement of the first sleeve element in the distal direction to cover the plurality of retaining elements.

77. The method of claim 76, wherein the first slide mechanism is configured to move in the distal direction of the catheter to affect movement of the first sleeve element in the distal direction to collapse the plurality of positioning arches.

78. The method of claim 74, wherein the second slide mechanism is configured to move in a proximal direction of the catheter to affect movement of the second sleeve element in the proximal direction to cover the plurality of retaining arches.

79. The method of claim 74, further including engaging the plurality of retaining elements with a plurality of retaining pockets disposed within a retaining element of the catheter.

80. The method of claim 74, further including selectively engaging a locking element with the first slide mechanism after manipulating the first slide mechanism to affect movement of the first sleeve element to collapse and cover the plurality of positioning arches.

81. The method of claim 74, further including selectively engaging a locking element with the second slide mechanism after manipulating the second slide mechanism to affect movement of the second sleeve element to collapse and cover the plurality of retaining arches.

82. The method of claim 74, wherein the endoprosthesis is fully implanted in a patient to treat a native heart valve and the method includes positioning the catheter relative to the endoprosthesis.

83. The method of claim 74, wherein the endoprosthesis is partially implanted in a patient to treat a native heart valve via the catheter.

84. The method of claim 74, further including removing the plurality of positioning arches from pockets of a native heart valve before the step of further manipulating the first slide mechanism.

85. The method of claim 74, further including partially implanting the endoprosthesis in a patient to treat a native heart valve via the catheter before the step of manipulating a first slide mechanism of a catheter to affect movement of a first sleeve to collapse a portion of the endoprosthesis and cover the plurality of retaining elements.