Apparatus and method for closing a septal defect
First Claim
1. An apparatus for reversibly closing a septal defect, the apparatus comprising:
- a) a septal defect closure device that is unitary in construction and comprises a first end, a second end and a center portion, said septal defect closure device having a first configuration comprising a scored, cylindrical shaft having an axis therethrough;
b) a catheter delivery means; and
c) an intralumen mechanical mechanism located in the catheter delivery means;
whereby when the device is delivered to an area having a septal defect such that the center portion of the shaft is positioned in the defect, at least two support struts are created as the intralumen mechanical mechanism begins to pull the first and second ends of the shaft toward the center portion thereof, the struts moving radially away from the axis in a hinge like fashion, thereby causing the septal defect closure device to assume a specific second configuration which fits securely into the septal defect and spans both sides of the septal defect, said septal defect closure device in its second configuration being anchored to the septal defect by pressure, causing the defect to be reversibly closed.
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Accused Products
Abstract
A catheter delivered device to close a septal defect, the device comprising a cylindrical shaft of metal or polymeric material with concentric parallel cuts through the wall of the device which create flattened support struts. The center of the support struts move radially away from the axis in a hinge like fashion in response to the movement of the device'"'"'s proximal and distal ends toward the center of the device. This movement is reversibly effected through mechanical means. The device can be coated with growth factors, mitogenic factors or other determinants which can improve tissue growth such that tissue ingrowth can occur over a period of time. The catheter itself may be an ultrasonic imaging catheter.
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Citations
30 Claims
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1. An apparatus for reversibly closing a septal defect, the apparatus comprising:
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a) a septal defect closure device that is unitary in construction and comprises a first end, a second end and a center portion, said septal defect closure device having a first configuration comprising a scored, cylindrical shaft having an axis therethrough; b) a catheter delivery means; and c) an intralumen mechanical mechanism located in the catheter delivery means;
whereby when the device is delivered to an area having a septal defect such that the center portion of the shaft is positioned in the defect, at least two support struts are created as the intralumen mechanical mechanism begins to pull the first and second ends of the shaft toward the center portion thereof, the struts moving radially away from the axis in a hinge like fashion, thereby causing the septal defect closure device to assume a specific second configuration which fits securely into the septal defect and spans both sides of the septal defect, said septal defect closure device in its second configuration being anchored to the septal defect by pressure, causing the defect to be reversibly closed. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
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30. A method of reversibly closing a septal defect comprising the steps of:
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a) providing an apparatus for reversibly closing a septal defect, the apparatus comprising; i) a septal defect closure device that is unitary in construction and comprises a first end, a second end, a center portion and having a first configuration comprising a cylindrical shaft having an axis therethrough and a plurality of concentric parallel cuts therethrough, ii) a catheter delivery means; and iii) an intralumen mechanical mechanism located in the catheter delivery means; b) delivering the apparatus to an area having a septal defect; c) positioning the center portion of the shaft of the device in the septal defect; d) pulling the first and second ends of the shaft toward the center portion thereof, by means of the intralumen mechanical mechanism, thereby creating at least two flattened support struts which move radially away from the axis in a hinge like fashion; e) moving the struts radially away from the axis in a hinge like fashion, by means of the intralumen mechanical mechanism, thereby causing the septal defect closure device to assume a specific second configuration which fits securely into the septal defect, spanning both sides thereof and is anchored thereto by pressure, causing the defect to be reversibly closed.
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Specification