Transcatheter puncture needle system
A puncture needle can comprise a puncture tip configured to pierce tissue, and a distal portion comprising an anchor portion and a curved puncture portion. The curved puncture portion can comprise a first end associated with the puncture tip and a second end coupled to the anchor portion, where the anchor portion comprises a portion distal of the curved puncture portion. A puncture needle system can comprise the puncture needle and a delivery catheter comprising a lumen, the puncture needle extending through the lumen. The delivery catheter can have a side outlet opening on a distal portion of the delivery catheter configured to allow extension therethrough of at least a portion of the curved puncture portion, where the anchor portion extends through a portion of the lumen distal of the side outlet opening.
1 . A puncture needle comprising:
a puncture tip configured to pierce tissue; and
an elongate portion, wherein the elongate portion comprises a distal portion comprising:
a curved puncture portion having a first end associated with the puncture tip, and the curved puncture portion being proximally oriented and the puncture tip pointing proximally;
a first distal elongate portion, the curved puncture portion extending from the first end to the first distal elongate portion and the first distal elongate portion meeting the curved puncture portion at a distally oriented acute angle; and
a second distal elongate portion, the first distal elongate portion and the second distal elongate portion meeting at a proximally oriented acute angle, and the second distal elongate portion extending proximally from the proximally oriented acute angle, wherein the proximally oriented acute angle is distal of the curved puncture portion.
2 . The puncture needle of claim 1 , wherein the first distal elongate portion, the second distal elongate portion and the curved puncture portion are in one plane.
3 . The puncture needle of claim 1 , wherein the elongate portion is a single wire.
4 . The puncture needle of claim 1 , wherein the first distal elongate portion comprises a first distal curved portion and the second distal elongate portion comprises a second distal curved portion, the first distal curved portion and the second distal curved portion having a same orientation as the curved puncture portion.
5 . The puncture needle of claim 4 , wherein a radius of curvature of the curved puncture portion is smaller than that of each of the first distal curved portion and the second distal curved portion.
6 . A puncture needle comprising:
a puncture tip configured to pierce tissue; and
a distal portion comprising:
an anchor portion comprising a first curved anchor portion and a second curved anchor portion; and
a curved puncture portion comprising a first end associated with the puncture tip and a second end coupled to the anchor portion, the curved puncture portion and the anchor portion meeting at a distally oriented acute angle, wherein the anchor portion comprises a portion distal of the curved puncture portion,
the first curved anchor portion and second curved anchor portion each comprising a shape configured to conform to a curvature along a length of a coronary sinus.
7 . The puncture needle of claim 6 , wherein the curved puncture portion is proximally oriented, and wherein the puncture tip points proximally.
8 . The puncture needle of claim 6 , wherein the curved puncture portion is distally oriented, and wherein the puncture tip points distally.
9 . The puncture needle of claim 6 , wherein the curved puncture portion comprises a segment of a circle.
10 . The puncture needle of claim 9 , wherein the curved puncture portion comprises a semi-circle.
11 . The puncture needle of claim 6 , wherein the distal portion comprises a lateral cross-section having a rectangular shape, the lateral cross-section being taken along a plane perpendicular to a longitudinal axis of the puncture needle.
12 . The puncture needle of claim 6 , wherein the anchor portion comprises:
the first curved anchor portion comprising a first end and a second end, wherein the first end of the first curved anchor portion is coupled to the curved puncture portion; and
the second curved anchor portion comprising a first end coupled to the second end of the first curved anchor portion, and wherein the second curved anchor portion extends proximally from the first end of the second curved anchor portion,
wherein the first curved anchor portion and the second curved anchor portion meet at a bend, the bend is proximally oriented, and the bend is distal of the curved puncture portion.
13 . The puncture needle of claim 12 , wherein the bend comprises an acute angle.
14 . The puncture needle of claim 6 , wherein the curved puncture portion, the first curved anchor portion, and the second curved anchor portion are in one plane.
15 . The puncture needle of claim 6 , wherein the curved puncture portion, the first curved anchor portion, and the second curved anchor portion comprise a same orientation.
16 . The puncture needle of claim 6 , wherein a radius of curvature of the curved puncture portion is smaller than that of each of the first curved anchor portion and the second curved anchor portion.
17 . The puncture needle of claim 6 , wherein the first curved anchor portion meets the curved puncture portion at the distally oriented acute angle, and the second curved anchor portion meets the first curved anchor portion at an opposingly oriented angle.
18 . The puncture needle of claim 6 , wherein the curved puncture portion and the anchor portion form a zig-zag shape.
19 . The puncture needle of claim 6 , wherein corresponding concave portions of the first curved anchor portion and the second curved anchor portion comprise a common proximal orientation.
20 . The puncture needle of claim 19 , wherein a concave portion of the curved puncture portion comprises a common orientation as the corresponding concave portions of the first and second curved anchor portions.
21 . A puncture needle system, comprising:
a puncture needle comprising a puncture tip and a distal portion, the distal portion comprising:
an anchor portion, and
a curved puncture portion comprising a first end associated with the puncture tip and a second end coupled to the anchor portion, the anchor portion comprising a portion distal of the curved puncture portion; and
a delivery catheter comprising a lumen, the puncture needle extending through the lumen, and a side outlet opening on a distal portion of the delivery catheter configured to allow extension therethrough of at least a portion of the curved puncture portion, wherein the anchor portion extends through a distal portion of the lumen distal of the side outlet opening,
wherein while the puncture needle is in a retracted state, the puncture tip is configured to be proximal of the side outlet opening and the anchor portion comprises a portion extending along the lumen past the side outlet opening and through the portion of the lumen distal of the side outlet opening.
22 . The system of claim 21 , wherein the distal portion of the lumen distal of the side outlet opening comprises a lateral cross section comprising a non-circular shape, the lateral cross section being taken along a plane perpendicular to a longitudinal axis of the delivery catheter.
23 . The system of claim 22 , wherein the lateral cross-section of the distal portion of the lumen comprises a same shape as a lateral cross section of the anchor portion.
24 . The system of claim 21 , and further comprising a medical implant guide wire sheath configured to slidably receive a medical implant guide wire, the medical implant guide wire sheath comprising a distal portion coupled to at least a portion of the curved puncture portion.
25 . The system of claim 21 , wherein the anchor portion is a curved anchor portion, the curved anchor portion comprising the portion distal of the curved puncture portion, and a proximal portion coupled to the second end of the curved puncture portion.
26 . The system of claim 21 , wherein the anchor portion comprises:
a first anchor portion comprising a first end and a second end, wherein the first end of the first anchor portion is coupled to the curved puncture portion; and
a second anchor portion comprising a first end coupled to the second end of the first anchor portion, and wherein the second anchor portion extends proximally from the first end of the second anchor portion,
wherein the first anchor portion and the second anchor portion meet at a bend, the bend is proximally oriented, and the bend is distal of the curved puncture portion.
27 . The system of claim 26 , wherein the curved puncture portion, the first anchor portion, and the second anchor portion are in one plane.
28 . The system of claim 26 , wherein the first anchor portion is a first curved anchor portion and the second anchor portion is a second curved anchor portion, wherein the curved puncture portion, the first curved anchor portion, and the second curved anchor portion comprise a same orientation.
29 . The system of claim 26 , wherein the first anchor portion and the second anchor portion are each linear portions.