Endoscopic suture loop anchors and methods
A suture needle system includes a first needle and at least one second needle. Each of the first and second needles preferably has a common needle body construct. The first needle includes an elongate suture having a length sufficient to extend at least the length of an instrument channel of an endoscope. The second needle includes an opening formed by a loop of suture at which the second needle can be advanced over the elongate suture. In use, the first needle is secured to a first tissue location using an endoscopic suturing system. A second needle is advanced at its opening over the elongate suture and secured to a second tissue location. Additional second needles may be advanced over the elongate suture to respective tissue locations. The elongate suture is pulled taut, drawing the second needles into proximity, and secured.
1. A needle assembly for use in association with a suturing device having a movable needle holder arm and a length of suture, comprising:
a needle tip with a sharp end, a circumferential capture groove adjacent the sharp end and a tubular section adjacent the circumferential capture groove having an opening adapted to receive the end of a length of suture, and
a straight, tubular needle body having a first end adjacent the needle tip, a second end opposite the needle tip, a side wall extending between the first and second ends, and an axis extending between the first and second ends,
the second end provided with retaining structure into which the needle holder arm is received so that the needle body can be removably retained on the needle holder arm, and a suture passage open to receive suture through the body of the needle, the passage extending through the side wall at a location between the first and second ends of the needle body and extending transverse to the needle axis when the needle tip is assembled at the first end of the needle body,
wherein the needle assembly is adapted to be longitudinally displaced along a length of suture extending through the suture passage during use of the needle assembly.
2. The needle assembly of claim 1 , wherein:
the suture passage extends orthogonal to the axis, and diametrically through the needle body.
3. The needle assembly of claim 1 , wherein:
the suture passage is adapted to be closed upon the length of suture to fix the needle assembly relative to the length of suture after displacement thereon.
4. The needle assembly of claim 1 , wherein:
the needle tip includes a tab groove, the needle body includes at least one tip tab defined in the tubular body and plastically deformed toward an interior of the tubular body so as to engage in the tab groove and fix the needle tip at the first end of the needle body.
5. The needle assembly of claim 1 in combination with another like needle assembly of claim 1 , further comprising:
the length of suture, the length of suture extending through the respective open suture passages, wherein the needle assemblies can be longitudinally displaced along the length of suture at their open suture passages.
6. The needle assembly according to claim 5 , wherein:
the suture passages can be closed upon the length of suture to fix the respective location of the needle assemblies relative to the elongate suture.
7. A needle system for use in association with a suturing device having a movable needle holder arm, comprising:
a) a first needle assembly, comprising:
a needle tip with a sharp end, a circumferential capture groove adjacent the sharp end and a tubular section adjacent the circumferential capture groove having an opening, and
a straight, tubular needle body having a first end adjacent the needle tip, a second end opposite the needle tip, a side wall extending between the first and second ends, and an axis extending between the first and second ends,
the second end provided with retaining structure into which the needle holder arm is received so that the needle body can be removably retained on the needle holder arm, and a suture passage open to receive suture through the body of the needle, the passage extending through the side wall at a location between the first and second ends of the needle body and extending transverse to the needle axis when the needle tip is assembled at the first end of the needle body;
b) a second needle assembly, comprising:
a needle tip with a sharp end, a circumferential capture groove adjacent the sharp end and a tubular section adjacent the circumferential capture groove having an opening, and
a straight, tubular needle body having a first end adjacent the needle tip, a second end opposite the needle tip, a side wall extending between the first and second ends, and an axis extending between the first and second ends,
the second end provided with retaining structure into which the needle holder arm is received so that the needle body can be removably retained on the needle holder arm, and a suture passage open to receive suture through the body of the needle, the passage extending through the side wall at a location between the first and second ends of the needle body and extending transverse to the needle axis when the needle tip is assembled at the first end of the needle body; and
c) a length of suture extending through the respective open suture passages of the first and second needle assemblies, wherein the first and second needle assemblies can be longitudinally displaced along the length of suture at their respective open suture passages.
8. The needle assembly according to claim 7 , wherein:
the suture passages can be closed upon the length of suture to fix the respective location of the first and second needle assemblies relative to the length of suture.
9. A suture and needle assembly for use in association with a suturing device having a movable needle holder arm, comprising:
a) a length of suture having an end; and
b) a needle assembly, including
a needle tip with a sharp end, a circumferential capture groove adjacent the sharp end and a tubular section adjacent the circumferential capture groove having an opening adapted to receive the end of the length of suture, and
a needle body having a first end adjacent the needle tip, a second end opposite the needle tip, a side wall extending between the first and second ends, and an axis extending between the first and second ends,
the second end provided with retaining structure into which the needle holder arm is received so that the needle body can be removably retained on the needle holder arm, and a suture passage open to receive the suture through the body of the needle, the passage extending through the side wall at a location between the first and second ends of the needle body and extending transverse to the needle axis when the needle tip is assembled at the first end of the needle body,
wherein the needle assembly is adapted to be longitudinally displaced along the length of suture during use.
10. The suture and needle assembly of claim 9 , wherein:
the needle body is straight.
11. The suture and needle assembly of claim 10 , wherein:
the needle body is tubular.
12. The suture and needle assembly of claim 9 , wherein:
the suture passage extends orthogonal to the axis, and diametrically through the needle body.
13. The suture and needle assembly of claim 9 , wherein:
the suture passage is adapted to be closed upon the length of suture to fix the needle assembly relative to the length of suture after displacement thereon.
14. The suture and needle assembly of claim 9 , wherein:
the needle tip includes a tab groove, the needle body includes at least one tip tab defined in the tubular body and plastically deformed toward an interior of the tubular body so as to engage in the tab groove and fix the needle tip at the first end of the needle body.