TISSUE CLOSURE DEVICES, DEVICE AND SYSTEMS FOR DELIVERY, KITS AND METHODS THEREFOR
The present invention relates to tissue closure devices, devices and systems for delivery, kits and methods therefor. The tissue closure devices can achieve tissue closure in lieu of compression and can be configured to be quickly deployable by an introducer or from outside the body.
1 . A closure device comprising:
(a) a distal flexible skirt with a self-intersecting geometry; and
(b) a stem with one end contacting a proximal surface of the distal flexible skirt.
2 . The closure device of claim 1 , wherein the distal flexible skirt comprises one or more bendable features.
3 . The closure device of claim 2 , wherein the bendable features are thin sections that form natural locations for flexure with applied external force.
4 . The closure device of claim 1 , wherein the self-intersecting geometry is configured to come in contact between two areas of the skirt surface when a force is applied in a select direction, thereby causing an increase in the magnitude of force needed to deflect the geometry an additional increment,
5 . The closure device of claim 1 , further comprising one or more proximally positioned radial extending elements, wherein the stem is positioned between the distal flexible skirt and the one or more radial extending element.
6 . The closure device of claims 1 , wherein the proximal surface of the distal flexible skirt has one of more of at least one of anchoring protrusions, nibs or ribs.
7 . The closure device of claims 1 , wherein the distal flexible skirt has a shape selected from round, triangular, oval, ovoid, elliptical, square, saucer, or rounded edges.
8 . The closure device of claims 1 , wherein the stem is positioned on a proximal surface of the flexible skirt at least one of centrally and non-centrally.
9 . The closure device of claims 1 , wherein the stem has a cross-sectional profile selected from the group comprising square, triangular, arrowhead, trapezoidal, rectangular, J, Y, hook, and bulbous.
10 . The closure device of claims 1 , wherein the stem further comprises a proximally positioned aperture therethrough.
11 . The closure device of claims 1 , wherein the stem further comprises one or more exterior features adapted and configured to achieve anchoring the stem in vivo.
12 . The closure device of claims 1 , wherein the stem further comprises a one or more slots along at least a portion of its length parallel to a stem longitudinal axis beginning at its proximal end.
13 . The closure device of claims 1 , wherein the stem has a proximal end adapted and configured to form a clasp, a socket, a breakable stem, or a tearable stem.
14 . The closure device of claims 1 , wherein at least one of the distal flexible skirt and stem are in releasable communication with a tether.
15 . The closure device of claim 14 wherein the tether is one or more of a wire, a spring, a thread, a ribbon, a suture, and a tube.
16 . A tissue closure delivery system comprising:
a tubular medical device;
a tissue closure delivery cartridge;
the closure device of claim 1 ;
a guide and seal assembly; and
a plunger,
wherein the tubular medical device is adapted and configured to releasably engage the tissue closure delivery cartridge at a proximal end, the tissue closure delivery cartridge is adapted and configured to releasably engage the guide and seal assembly at a proximal end, and the plunger is adapted and configured to be advanced through a lumen in each of the guide and seal assembly, the tissue closure delivery cartridge and the tubular medical device.
17 . The tissue closure delivery system of claim 16 wherein the tubular medical device is one or more of: a needle, tube, guide wire, electrode wire, intravenous wire, introducer, sheath, dilator, catheter, laparoscope, endoscope, trocar, deployment tool, or cannula.
18 . The tissue closure delivery system of claim 16 further comprising a delivery capsule having a cartridge body; a tapered distal tip; a compressible section; a clear section; a lumen extending therethrough, wherein the clear section is adapted and configured to house the closure device.
19 . The tissue closure delivery system of claim 18 wherein at least one of the tubular medical device or the delivery capsule further comprises a valve.
20 . The tissue closure delivery system of claim 18 wherein the delivery capsule further comprises one or more of the following: one or more proximally positioned detent features on an exterior surface of the cartridge body; one or more distally positioned undercuts; an exterior groove in the cartridge body; a one-way snap feature;
an undercut central bore; or one or more collets.
21 . The tissue closure delivery system of claim 18 wherein the capsule is adapted and configured to receive a plunger through a central aperture.
22 . The tissue closure delivery system of claim 21 wherein the capsule is adapted and configured to permit the plunger to move in a first axial direction and resist movement in a second axial direction different than the first direction.
23 . A method for tissue closure, comprising:
inserting a distal end of a tubular medical device into a vessel through an opening in vessel tissue;
accepting the closure device of claim 1 at or near the proximal end of the tubular medical device; and
advancing the closure device through the tubular medical device, thereby allowing the closure device to partially exit or completely exit the distal end of the tubular medical device within the vessel.
24 . The method of claim 23 , further comprising removing the tubular medical device from the vessel through the opening in the vessel tissue.
25 . The method of claim 24 , further comprising permitting the stem of the closure device to enter the opening in the vessel tissue while the distal flexible skirt remains within the vessel.
26 . The method of claim 23 , wherein the closure device is connected to a tether.
27 . The method of claim 26 , further comprising removing the tether from the closure device.
28 . The method of claim 26 , further comprising allowing the tether to remain connected to the closure device.
29 . The method of claim 28 , wherein the tether is formed of a bioabsorbable material.