Devices, systems, and methods for transseptal puncture
Various devices, apparatuses, and methods for transseptal puncture and crossing are disclosed herein. A transseptal puncture and crossing device can include novel puncture member having a crossing coil mated to a body portion to be able to both cross a tissue and allow a wire or guard be inserted through the puncture member. Though not required, the puncture member can have one or more of novel features, including a tapered coil portion, a transition cutter, a gripper coil portion, an atraumatic guard, and a shaped cutting wire. Methods for transseptal punctures and crossing include adding rotation, oscillation and/or ultrasound to a transseptal puncture device.
1 . A transseptal puncture device for creating a hole in a septum of a patient, comprising:
(a) an elongate body portion;
(b) a coiled portion distal to the body portion, the coiled portion having a distal end and a proximal end, the proximal end being closer to the body portion;
(c) a transition portion between the body portion and the coiled portion, wherein the transition portion comprises a sharpened outer edge; and
(d) a longitudinally extending lumen extending axially through an entire length of the elongate body portion and the coiled portion; wherein:
(1) the distal end of the coiled portion is sharp; and
(2) the device is configured to create an opening in the septum of the patient by advancing the distal end of the coiled portion into contact with the septum and rotating the device in a first direction.
2 . The device of claim 1 , wherein the coiled portion comprises a helical wall having a thickness in an axial direction of the transseptal puncture device that increases along a length of the coiled portion from the distal end of the coiled portion to the proximal end of the coiled portion so as to increase a size of the opening in the septum as the coiled portion of the device is advanced through the opening in the septum.
3 . The device of claim 2 , wherein the thickness of the helical wall in the axial direction at the proximal end of the coiled portion is equal to or greater than an outer diameter of the coiled portion at the proximal end of the coiled portion.
4 . The device of claim 2 , wherein the thickness of the helical wall in the axial direction at a proximal end portion of the coiled portion adjacent to the proximal end of the coiled portion is at least twice as large as the thickness of the helical wall in the axial direction at a distal end portion of the coiled portion adjacent to the distal end of the coiled portion.
5 . The device of claim 2 , wherein the coiled portion comprises a gap between adjacent coils of the helical wall to thereby define a separation between a first coil and an adjacent second coil of the helical wall, wherein the gap has a constant width in an axial direction along a length of the coiled portion from the distal end of the coiled portion to the proximal end of the coiled portion.
6 . The device of claim 5 , wherein the gap comprises a first distal gap portion that is located at a distal portion of the coiled portion and is between adjacent coils of the helical wall and a second proximal gap portion that is located proximal to the first distal gap portion.
7 . The device of claim 6 , wherein the second gap portion is located at or adjacent to a transition portion of the transseptal puncture device, the transition portion being between the body portion and the coiled portion.
8 . The device of claim 6 , wherein the second gap portion extends in an axial direction that is approximately aligned with an axially extending centerline of the coiled portion.
9 . The device of claim 6 , further comprising a transitional gap portion between the second and first gap portions, wherein an angle of the transitional gap portion relative to an axial centerline of the coiled portion is different than an angle of the first gap portion relative to the axial centerline of the coiled portion.
10 . The device of claim 2 , wherein the coiled portion comprises a gap between adjacent coils of the helical wall to thereby define a separation between a first coil and an adjacent second coil of the helical wall, wherein the gap has a pitch or an angle relative to an axial centerline of the coiled portion that decreases along a length of the coiled portion from the distal end of the coiled portion to the proximal end of the coiled portion as the thickness of the helical wall increases along the length of the coiled portion from the distal end of the coiled portion to the proximal end of the coiled portion.
11 . The device of claim 1 , wherein at least the body portion of the transseptal puncture device is flexible.
12 . The device of claim 1 , wherein the lumen extending through the body portion and the coiled portion is configured to receive a guidewire or a needle therein.
13 . The device of claim 12 , further comprising a needle configured to move axially within the lumen through the body portion and the coiled portion.
14 . The device of claim 1 , further comprising a helical guard comprising a guard body portion and a guard helical portion, wherein the helical guard is configured to move axially within the lumen through the body portion and the coiled portion, and wherein a distal end of the guard helical portion is configured to be blunt or atraumatic.
15 . The device of claim 14 , wherein the guard helical portion is configured such that, when the guard helical portion is advanced through the coiled portion, the guard helical portion interwinds with the coiled portion.
16 . The device of claim 1 , further comprising a distal coil guard configured to retractably extend out from the distal end of the coiled portion, wherein a distal end of the distal coil guard is configured to be blunt or atraumatic.
17 . The device of claim 1 , wherein at least the coiled portion is laser cut from a tube.
18 . The device of claim 1 , wherein the distal portion of the coiled portion further comprising a hook-like tip.
19 . The device of claim 1 , wherein the coiled portion is formed from a wire or ribbon.
20 . The device of claim 1 , further comprising an electromechanical motion generator coupled with the body portion.
21 . A transseptal puncture device for creating a hole in a septum of a patient, comprising:
(a) an elongate body portion;
(b) a coiled portion distal to the body portion, the coiled portion having a distal end and a proximal end, the proximal end being closer to the body portion, wherein the coiled portion comprises a helical wall having a thickness in an axial direction of the transseptal puncture device that increases along a length of the coiled portion from the distal end of the coiled portion to the proximal end of the coiled portion so as to increase a size of an opening in the septum as the coiled portion of the device is advanced through the opening in the septum; and
(c) a longitudinally extending lumen extending axially through an entire length of the elongate body portion and the coiled portion; wherein:
(1) the distal end of the coiled portion is sharp; and
(2) the device is configured to create the opening in the septum of the patient by advancing the distal end of the coiled portion into contact with the septum and rotating the device in a first direction.
22 . A transseptal puncture device for creating a hole in a septum of a patient, comprising:
(a) an elongate body portion;
(b) a coiled portion distal to the body portion, the coiled portion having a distal end and a proximal end, the proximal end being closer to the body portion;
(c) a distal coil guard configured to retractably extend out from the distal end of the coiled portion, wherein a distal end of the distal coil guard is configured to be blunt or atraumatic; and
(d) a longitudinally extending lumen extending axially through an entire length of the elongate body portion and the coiled portion; wherein:
(1) the distal end of the coiled portion is sharp; and
(2) the device is configured to create an opening in the septum of the patient by advancing the distal end of the coiled portion into contact with the septum and rotating the device in a first direction.
23 . The device of claim 22 , wherein at least the body portion of the transseptal puncture device is flexible.
24 . The device of claim 22 , wherein the lumen extending through the body portion and the coiled portion is configured to receive a guidewire or a needle therein.
25 . The device of claim 22 , further comprising an electromechanical motion generator coupled with the body portion.
26 . The device of claim 22 , wherein the coiled portion is formed from a wire or ribbon.
27 . The device of claim 22 , wherein the coiled portion comprises a helical wall having a thickness in an axial direction of the transseptal puncture device that increases along a length of the coiled portion from the distal end of the coiled portion to the proximal end of the coiled portion so as to increase a size of the opening in the septum as the coiled portion of the device is advanced through the opening in the septum.