Device, systems, and methods for grasping tissue at a muscular level
A tissue repair device, system, and method for grasping tissue, such as to repair the tissue (e.g., a defect in tissue), by anchoring a tissue-penetrating arm along a first location along the tissue, moving the anchored tissue-penetrating arm to a second location along the tissue, and grasping tissue at the second location with a tissue-grasping arm. The tissue-penetrating arm remains in a substantially axial straight configuration to facilitate tissue penetration. The tissue-grasping arm is movable towards and away from the tissue-penetrating arm to grasp tissue and hold the grasped tissue between the tissue-grasping arm and the tissue-penetrating arm. The tissue repair device may be left in place holding the tissue in the grasped configuration.
1. A tissue repair device comprising:
a tubular component having a longitudinal axis and a lumen defined therein; and
a tissue-penetrating arm and a tissue-grasping arm extendable together from a closed position extending laterally adjacent each other within the lumen of the tubular component to a position outside the lumen of the tubular component;
wherein:
the tissue-penetrating arm is shaped and configured to be maintained and to remain in a substantially axially straight configuration from a proximal end thereof to a distalmost end thereof and in a position substantially parallel to the tubular component longitudinal axis when extended to a position outside the tubular component lumen with a tissue-penetrating distal tip of the tissue-penetrating arm extending parallel to the longitudinal axis to be directed axially and distally away from the tubular component to axially penetrate tissue upon distal advancement of the tissue-penetrating arm along the longitudinal axis and toward tissue; and
the tissue-grasping arm is pivotable with respect to the tubular component longitudinal axis toward the tissue-penetrating arm to grasp tissue between the tissue-grasping arm and the tissue-penetrating arm, or away from the tissue-penetrating arm, wherein the tissue-grasping arm has a proximal end coupled to the proximal end of the tissue-penetrating arm.
2. The tissue repair device of claim 1 , wherein the tissue-grasping arm is biased to move away from the tissue-penetrating arm when extended to a position outside the tubular component lumen, wherein the tissue-penetrating arm and the tissue-grasping arm are in a closed configuration while within the tubular component lumen and in an open position when extended to a position outside the tubular component lumen.
3. The tissue repair device of claim 1 , wherein the tissue-penetrating arm includes a sharp axially extending distalmost edge or tip configured to penetrate into tissue.
4. The tissue repair device of claim 3 , wherein the tissue-penetrating arm has a length sufficient to penetrate through mucosal, submucosal, and muscular layers of a small intestine without penetrating through a wall of the small intestine.
5. The tissue repair device of claim 4 , wherein the tissue-grasping arm has a blunt distal end.
6. The tissue repair device of claim 3 , wherein the tissue-grasping arm is configured to inhibit a depth to which the tissue-penetrating arm may penetrate into tissue.
7. The tissue repair device of claim 3 , wherein the tissue-penetrating arm comprises a sharp distalmost end extending along the longitudinal axis, and a tissue-penetrating hook positioned proximal to the sharp distalmost end.
8. The tissue repair device of claim 7 , wherein the tissue-penetrating hook extends transverse to the tubular component longitudinal axis.
9. The tissue repair device of claim 8 , wherein the tissue-penetrating hook is shaped and configured to retain tissue when the tissue-penetrating arm is moved laterally.
10. The tissue repair device of claim 1 , wherein the tissue-grasping arm includes at least one tissue-grasping hook.
11. The tissue repair device of claim 1 , wherein the tissue-penetrating arm and the tissue-grasping arm are coupled to a control element, and the tissue-penetrating arm is coupled with the control element to be maintained in the position substantially parallel to the tubular component when extended to a position outside the tubular component lumen.
12. The tissue repair device of claim 1 , wherein the tissue-grasping hook includes a pair of tissue-grasping hooks facing toward the tissue-penetrating arm, and the tissue-penetrating arm fits between the tissue-grasping hooks when the tissue-grasping arm is moved toward the tissue-penetrating arm.
13. The tissue repair device of claim 10 , wherein the tissue-penetrating arm includes at least one hook shaped and configured to retain tissue when at least one of tissue-grasping arm or the tissue-penetrating arm is moved laterally.
14. A tissue repair system comprising:
a flexible elongate member having a lumen defined therein, and a longitudinal axis extending between a distal end of the flexible elongate member and a proximal end of the flexible elongate member;
a tissue-penetrating arm and a tissue-grasping arm extendable from within the flexible elongate member lumen to a position outside the flexible elongate member lumen, wherein the tissue-grasping arm is pivotable to a position toward the tissue-penetrating arm to grasp tissue between the tissue-grasping arm and the tissue-penetrating arm and to a position away from the tissue-penetrating arm;
a controller having a proximal end and a distal end, the controller distal end coupled to a proximal end of the tissue-penetrating arm and a proximal end of the tissue-grasping arm to move the tissue-penetrating arm and the tissue-grasping arm together between a position within the flexible elongate member lumen and a position distally outside the flexible elongate member lumen; and
a control handle coupled with the proximal end of the flexible elongate member and the controller to control movement thereof;
wherein:
the tissue-penetrating arm and the tissue-grasping arm are shaped and configured differently from each other, with the pivotable tissue-grasping arm being shorter than the tissue-penetrating arm.
15. The tissue-repair system of claim 14 , wherein the tissue-penetrating arm is maintained in a position substantially parallel to the flexible elongate member longitudinal axis when extended to outside the flexible elongate member lumen, and the pivotable tissue-grasping arm is pivotable with respect to the flexible elongate member longitudinal axis toward or away from the tissue-penetrating arm.
16. The tissue-repair system of claim 14 , further comprises a capsule coupled to the distal end of the flexible elongate member and defining a lumen therethrough, the tissue-penetrating arm and the tissue-grasping arm movable between a closed configuration within the capsule and an open configuration outside the capsule.
17. The tissue-repair system of claim 16 , wherein the capsule is separable from the flexible elongate member with the tissue-penetrating arm and the tissue-grasping arm positioned therein in a closed position.