Apparatus for manipulating and securing tissue
View Patent ↗Apparatus for manipulating and securing tissue are described herein. In creating tissue folds within the body of a patient, a tissue manipulation assembly may generally have an elongate tubular member, an engagement member slidably dispose through the tubular member and a distal end adapted to engage tissue via a helical member, tissue stabilizing members positioned at the tubular member distal end which are adapted to stabilize tissue therebetween, and a delivery tube pivotable about the tissue stabilizer. The stabilizing members can be adapted to become angled relative to longitudinal axis of the elongate tubular member. Moreover, one or all the articulation controls and functions can be integrated into a singular handle assembly connectable to the tissue manipulation assembly via a rigid or flexible tubular body.
1. A needle deployment assembly, comprising:
an elongate flexible catheter;
a control housing at a proximal end of the catheter;
a needle opening at a distal end of the catheter;
two or more anchor assemblies within the catheter, with each anchor assembly including a first anchor attached to a second anchor via a suture, and with the first and second anchors each having a proximal tubular collar attached to a distal tubular collar by one or more flexible elements, with the suture extending through the proximal and distal collars of the first and second anchors;
with the first and second anchors temporarily interlocked via a first pair of curved tabs on the distal tubular collar of the first anchor engaged with a second pair of curved tabs on the proximal tubular collar of the second anchor; and
with the first and second pairs of curved tabs adapted to interlock the first and second anchors when they are within the catheter, and to unlock the first and second anchors from each other when the first anchor is moved out of the catheter.
2. The needle deployment assembly of claim 1 wherein the first and second pairs of curved tabs are mirror images of each other.
3. The needle deployment assembly of claim 1 further including a pusher in the catheter, with a distal end of the pusher interlocking with the proximal tubular collar of the first anchor.
4. The needle deployment assembly of claim 1 with each anchor comprising a basket anchor.
5. The needle deployment assembly of claim 4 with each basket anchor including a plurality of arm members extending between a distal collar and a proximal collar.
6. The needle deployment assembly of claim 1 further comprising a spacer between two or more adjacent anchors.
7. The needle deployment assembly of claim 1 with the first and second anchors temporarily interlocked via a rounded projection fitting on the first anchor projecting into a complementary slot in the second anchor.
8. A needle deployment assembly for use in a surgical plication assembly, comprising:
an elongate flexible catheter;
a control attached to a proximal end of the catheter;
a needle at a distal end of the catheter, with the needle having a needle opening;
an anchor assembly within the catheter and including at least first, second and third basket anchors, with each basket anchor having a proximal collar and a distal collar;
with each collar having a hook-like curved surface interlocking feature contacting and interlocked with a complementary curved surface interlocking feature on a collar of an adjacent anchor to keep the basket anchors aligned with each other while they are in the catheter, and with the basket anchors releasable from each other when deployed out of the catheter and skewed relative to each other;
a suture extending entirely longitudinally through the collars of the basket anchors and through the control; and
a pusher partially within the catheter, with the anchor assembly between the needle opening and a distal end of the pusher, and with a distal end of the pusher having a hook-like circumferential collar fitting for interlocking with a proximal collar fitting on the first basket anchor.
9. The needle deployment assembly of claim 8 further comprising uniformly spaced apart flexible tabs projecting at least partially into the catheter.
10. The needle deployment assembly of claim 8 with each anchor including a plurality of arm members extending between a distal collar and a proximal collar.
11. The needle deployment assembly of claim 8 with a distal end of the suture extending out of a distal end of the catheter through the needle opening.
12. The needle deployment assembly of claim 11 further comprising a loop on the distal end of the suture.