Endoscopic transluminal stent access and delivery system
Aspects of the present disclosure are directed toward apparatuses, systems, and methods for stent access and device delivery. In certain instances, the apparatuses, systems, and methods may include a plurality of struts arranged about the one or more cutting blades on a tip portion.
1 . A delivery system comprising:
a catheter including a distal end, a proximal end, and a body portion extending between the distal end and the proximal end;
a tip portion at the distal end of the catheter and including one or more cutting blades, the tip portion configured to create openings in a tissue wall of two internal spaces, the one or more cutting blades configured to enlarge the openings in tissue of each of the two internal spaces to create enlarged openings;
a plurality of struts arranged about the one or more cutting blades in a first configuration, the plurality of struts being separable distally from the tip portion by being translated distally from the tip portion to expose the one or more cutting blades in a second configuration; and
a leading atraumatic end connected to the plurality of struts and positioned at a terminal distal end of the delivery system in the first configuration,
wherein a distal space is defined between the distal end of the catheter and a proximal end of the leading atraumatic end when the plurality of struts are translated distally in the second configuration.
2 . The delivery system of claim 1 , wherein the leading atraumatic end interconnects distal ends of the plurality of struts, and proximal ends of the plurality of struts form a proximal base having a circular perimeter.
3 . The delivery system of claim 1 , wherein the plurality of struts taper inwardly from the proximal base toward the leading atraumatic end in the second configuration.
4 . The delivery system of claim 1 , wherein the tissue wall includes a first side and a second side, the plurality of struts is configured to expand radially in response to extending the plurality of struts distally from the leading atraumatic end across the first side of the tissue wall to the second side of the tissue wall, and the proximal base is configured to catch the second side of the tissue wall in response to the plurality of struts being actuated proximally toward the leading atraumatic end.
5 . The delivery system of claim 4 , further comprising a delivery sheath configured to constrain the plurality of struts prior to extending the plurality of struts distally from the leading atraumatic end across the first side of the tissue wall to the second side of the tissue wall.
6 . The delivery system of claim 1 , further comprising a cap portion arranged between the leading atraumatic end and the plurality of struts, the cap portion being configured to actuate between a first position that covers the one or more cutting blades of the leading atraumatic end and a second position of the leading atraumatic end that exposes the one or more cutting blades.
7 . The delivery system of claim 6 , wherein the leading atraumatic end includes a lock configured to hold the cap portion in the second position in response to the cap portion being actuated to the second position.
8 . The delivery system of claim 1 , wherein the two internal spaces include a distal organ and a proximal organ.
9 . The delivery system of claim 1 , further including an actuation wire defining a first end coupled to the plurality of struts and a second end coupled to the catheter, wherein the actuation wire translates the plurality of struts distally from the tip portion in the second configuration.
10 . The delivery system of claim 1 , further comprising a delivery sheath including a lumen and a distal tip, wherein the delivery sheath is operable to releasably couple an implantable medical device to the catheter.
11 . A delivery system comprising:
a delivery sheath including a lumen and a distal tip,
a catheter including a distal end, a proximal end, and a body portion extending between the distal end and the proximal end;
a tip portion arranged at the distal end of the catheter and including one or more cutting blades; and
a plurality of interconnected struts arranged about the one or more cutting blades on the tip portion in a first configuration, the plurality of interconnected struts being configured to actuate from the tip portion and translate extend distally away from the tip portion to expose the one or more cutting blades in a second configuration, the plurality of interconnected struts being constrained by the delivery sheath,
wherein, in the first configuration, the plurality of interconnected struts cover the one or more cutting blades, and
wherein a distal space is defined between the distal end of the catheter and a proximal end of the plurality of interconnected struts in the second configuration.
12 . The delivery system of claim 11 , wherein the plurality of interconnected struts expands radially upon release from the delivery sheath.
13 . The delivery system of claim 11 , further including an implantable medical device coupled to the catheter wherein the implantable medical device includes a lumen configured to interconnect two internal spaces of a patient, the distal tip is configured to create openings in tissue of each of the two internal spaces, and the one or more cutting blades are configured to enlarge the openings in the tissue of each of the internal spaces to create enlarged openings.
14 . The delivery system of claim 13 , wherein the plurality of interconnected struts includes a leading atraumatic end, and wherein the leading atraumatic end interconnects distal ends of the plurality of interconnected struts, and proximal ends of the plurality of struts form a proximal base having a circular perimeter, and wherein the proximal base of the plurality of interconnected struts includes a diameter greater than a diameter of the opening in the tissue.
15 . The delivery system of claim 11 , further including an actuation wire defining a first end coupled to the plurality of interconnected struts and a second end coupled to the catheter, wherein the actuation wire translates the plurality of interconnected struts distally from the tip portion in the second configuration.
16 . A method of connecting two anatomical spaces of a patient, the method comprising:
arranging a delivery system at a target location, the delivery system including a catheter having a distal end, a proximal end, and a body portion extending between the distal end and the proximal end, an tip portion at a distal end of the catheter including one or more cutting blades, a plurality of struts arranged about the one or more cutting blades and configured to cover the one or more cutting blades in a first configuration to protect adjacent tissue from being cut by the one or more cutting blades, and a leading atraumatic end connected to the plurality of struts and positioned at a terminal distal end of the delivery system in the first configuration;
actuating the plurality of struts distally relative to the tip portion through openings in tissue walls of the two anatomical spaces such that the plurality of struts expands radially relative to the tip portion in a second configuration;
extending the tip portion through the openings in the tissue walls of the two anatomical spaces to create enlarged openings; and
connecting the two anatomical spaces.
17 . The method of claim 16 , further comprising actuating the plurality of struts proximally relative to the tip portion to arrange the tissue walls to the two anatomical spaces adjacent from one another prior to extending the tip portion through the openings.
18 . The method of claim 16 , wherein the extending the tip portion through the openings includes catching the one or more cutting blades within the plurality of struts.
19 . The method of claim 16 , wherein connecting the two anatomical spaces is performed using an implantable medical device that facilitates connecting the two anatomical spaces.
20 . The method of claim 19 , further comprising actuating the plurality of struts and the tip portion through a lumen in the implantable medical device after deploying the implantable medical device within the enlarged openings.