Vascular closure methods and apparatuses
First Claim
1. A method of closing an opening in tissue having a proximal surface using a device having a plurality of tissue engagement elements extending distally from a central junction and capable of occupying a plurality of compressed configurations and at least one expanded configuration and a separate locking element, said method comprising the steps of:
- passing the device while in a first one of the compressed configurations through a sheath disposed adjacent to an opening in the proximal surface of the tissue;
expelling the device from the sheath into space beyond the proximal surface of the tissue such that the device assumes the at least one expanded configuration;
manipulating the device such that the tissue engagement elements engage the tissue;
following engaging the tissue with the tissue engagement elements, advancing the locking element along a flexible member from a proximal end of the flexible member toward the device and along the plurality of tissue engagement elements, the flexible member extending from a device proximal end at the central junction to a position remote from and proximal to the device proximal end; and
moving the device to bring edges of the opening into apposition.
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Accused Products
Abstract
A vascular closure device comprised of a sheath-delivered expandable, umbrella-like device with structural radial members with terminal and non-terminal hooks that engage the vessel wall. Unlike other vascular closure umbrella-type devices that effect closure by opening of the umbrella to cover an opening, the present invention effects closure of the aperture with closure of the umbrella. The closure can be maintained by a retainer lock that slides down the members, causing contraction, bringing the members into a compressed configuration (e.g., a parallel orientation of linear members) and the wound edges together, permitting immediate vascular closure and healing of the blood vessel. The device can be delivered and recovered by an intravascular sheath.
973 Citations
27 Claims
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1. A method of closing an opening in tissue having a proximal surface using a device having a plurality of tissue engagement elements extending distally from a central junction and capable of occupying a plurality of compressed configurations and at least one expanded configuration and a separate locking element, said method comprising the steps of:
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passing the device while in a first one of the compressed configurations through a sheath disposed adjacent to an opening in the proximal surface of the tissue; expelling the device from the sheath into space beyond the proximal surface of the tissue such that the device assumes the at least one expanded configuration; manipulating the device such that the tissue engagement elements engage the tissue; following engaging the tissue with the tissue engagement elements, advancing the locking element along a flexible member from a proximal end of the flexible member toward the device and along the plurality of tissue engagement elements, the flexible member extending from a device proximal end at the central junction to a position remote from and proximal to the device proximal end; and moving the device to bring edges of the opening into apposition. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A method of closing an opening in tissue having a proximal surface using a device having a plurality of tissue engagement elements extending distally from a central junction and capable of occupying a plurality of compressed configurations and at least one expanded configuration, each tissue engagement element include one or more tissue engagement structures, said method comprising the steps of:
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locating a sheath within the opening in the tissue, the sheath receiving a guidewire; passing the device while in a first one of the compressed configurations through a sheath disposed adjacent to an opening in the proximal surface of the tissue; expelling the device from the sheath into space beyond the proximal surface of the tissue such that the device assumes the at least one expanded configuration with the plurality of tissue engagement elements extending generally perpendicularly from the central junction of the device; with a flexible member extending proximally from the central junction of the device, manipulating the device to engage the tissue with the one or more tissue engagement structures of the tissue engagement elements; and following engaging the tissue, advancing a locking element on the flexible member and along the plurality of tissue engagement element to move the device to bring edges of the opening into apposition. - View Dependent Claims (18, 19, 20, 21, 22, 23)
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24. A method of closing an opening in tissue having a proximal surface using a device having a plurality of tissue engagement elements extending distally from a central junction and capable of occupying a plurality of compressed configurations and at least one expanded configuration and a separate locking element, each tissue engagement element include one or more tissue engagement structures, said method comprising the steps of:
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passing the device while in a first one of the compressed configurations through a sheath disposed adjacent to an opening in the proximal surface of the tissue; expelling the device from the sheath into space beyond the proximal surface of the tissue such that the device assumes the at least one expanded configuration with the plurality of tissue engagement element extending generally perpendicularly from the central junction of the device; with a flexible member extending proximally from the central junction of the device, manipulating the device to engage the tissue with the one or more tissue engagement structures of the tissue engagement elements; and following engaging the tissue, advancing the locking element along a flexible member from a proximal portion of the flexible member toward the device, the flexible member extending from a device proximal end to a position remote from and proximal to the device proximal end; and moving the locking member along the plurality of tissue engagement elements of the device to bring edges of the opening into apposition. - View Dependent Claims (25, 26, 27)
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Specification