Systems, devices, and related methods for retracting tissue
In one aspect of the present disclosure, a tissue retraction system may include a first anchor, a second anchor, and an elongate coupling member extending between the first anchor and the second anchor. The system also may include a holder for receiving the first anchor, the second anchor, and the elongate coupling element. The holder may include a proximal portion and a distal portion. The distal portion may have a smaller width than the proximal portion such that the distal portion exerts a force on a proximal end of the first anchor during deployment of the first anchor from the holder. The force may move the first anchor into an open configuration for receiving tissue.
1. A method comprising:
extending a coupling element between a first element engaging a target area of tissue at a first location along the tissue and a second element at a second location along the tissue spaced apart from the first location, the coupling element having a first end coupled to the first element and a second end coupled to the second element;
manipulating the target area of tissue relative to surrounding tissue at the first location; and
adjusting a force vector exerted on the target area of tissue relative to surrounding tissue at the first location, the force vector having a direction of application and a magnitude.
2. The method of claim 1 , wherein adjusting a force vector further comprises releasing the second element from the second location.
3. The method of claim 1 , further including moving the second element toward a third location to increase the force vector exerted on the target area of tissue, the third location being spaced a greater distance from the first location than the distance of the second location from the first location.
4. The method of claim 1 , further including adjusting the magnitude of the force vector by moving the first element and the second element relative to each other.
5. The method of claim 1 , further including ejecting the first element from a holder and engaging the first element with the holder to move the first element to an open configuration to receive the target area of tissue.
6. The method of claim 5 , wherein ejecting the first element from the holder further comprises moving the first element from the holder to move the first element to a closed configuration to anchor the first element to the target area of tissue and disengaging the first element from the holder.
7. The method of claim 1 , wherein the first location and the second location are on the same tissue.
8. The method of claim 1 , further comprising deploying the second element at the second location before extending the coupling element between the first element and the second element.
9. The method of claim 1 , further comprising moving the second end of the coupling element from the second location to a third location spaced apart from the second location.
10. The method of claim 1 , wherein the first element engages tissue at the first location to anchor the first end of the coupling element to the target area of tissue, and the second element engages tissue at the second location to anchor the second end of the coupling element at the second location.
11. The method of claim 1 , wherein manipulating the target area of tissue further comprises cutting the target area of tissue.
12. A tissue retraction system, comprising:
a stretchable tether having a first end and a second end;
a first anchor having a fastener configured to engage tissue, the first end of the stretchable tether being directly coupled to the first anchor;
a second anchor engageable with the second end of the stretchable tether; and
an engagement element comprising a loop at the second end of the stretchable tether, the second anchor engageable with the loop.
13. The tissue retraction system according to claim 12 , wherein at least one of the first anchor and the second anchor is a tissue clip having jaws.
14. The tissue retraction system according to claim 12 , wherein the stretchable tether and the first anchor are deployable separately from the second anchor.
15. The tissue retraction system of claim 12 , wherein the stretchable tether comprises a rubber band including at least one loop in addition to the loop of the engagement element.
16. The tissue retraction system of claim 12 , wherein the stretchable tether comprises a rubber band including at least one loop.
17. A method comprising:
anchoring a first end of a tether to a target area of tissue at a first location on a tissue and anchoring a second end of a tether at a second location on the tissue spaced from the first location to impart a force vector on the target area; and
moving the second end of the tether to a third location spaced from the second location and the first location to adjust the force vector on the target area.
18. The method of claim 17 , wherein the second location and the third location are locations along the same tissue.
19. The method of claim 17 , wherein the first end of the tether is anchored to the target area of tissue with a first anchoring element, and the second end of the tether is anchored at a second location with a second anchoring element, the method further comprising locating the second anchoring element at the second location before imparting a force vector on the target area of tissue via the tether.