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US 11,109,855 B2Granted
Knotless orthopedic stabilization system
AssigneeDunamis Medical Technologies, LLC
InventorsEugene Shoshtaev, Prithviraj Chavan, Forrest B. Samuel
Life of this patent
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Abstract
Button-suture assemblies which employ a knotted locking mechanism do not maintain tension when securing bone and tissue fragments. A knotless method and device for maintaining tension and providing precise placement of a button-suture assembly during stabilization procedures comprising a locking pin, which mates with a button creating pinch points with increased surface area through which suture can pass from a baseplate through two dedicated openings in the button, one for the first end of the suture and one for the second end of the suture while preventing tension loss during the locking step and therefore allowing for precise placement of the button-suture assembly.
Claims26
A button-suture assembly to fix tissue to tissue, bone, or other member, comprising:
- a. a suspension device defining a first end and comprising a button and a locking pin, the button having a proximal facing surface, a distal facing surface configured to mate or fix to tissue, bone, or other member, and a receiving surface configured to mate with the locking pin, the locking pin having a mating surface configured to mate with the receiving surface of the button, and at least one concave indentation formed in the mating surface and configured to receive at least a portion of a suture therein for passage or capture;
- b. at least one suture interacting with the suspension device, the at least one suture having a proximal end portion extending proximally from the suspension device, the at least one suture passing through the suspension device and forming a first loop portion extending distally from the suspension device, the first loop portion defining a second end configured to mate with tissue, bone, or other member, the at least one suture passing through the suspension device between the receiving surface of the button and the mating surface of the locking pin within the at least one concave indentation;
- wherein the button-suture assembly comprises a first state defining a first distance between the first and second ends and a second state defining a second distance between the first and second ends, the second distance being less than the first distance;
- and
- wherein the proximal end portion of the suture is configured to be pulled taut in the proximal direction when the first end of the button-suture assembly is mated with a first tissue and the second end of the button-suture assembly is mated with a second tissue, bone, or other member, thereby creating tension in the suture which causes the button-suture assembly to transition from the first state to the second state, where the second state is maintained via compression and friction applied to the suture between the receiving surface of the button and the mating surface of the locking pin within the at least one concave indentation.
2 more elements
A method for securing bone, tissue or other fragments in place during surgical procedures with a button-suture assembly, comprising:
- providing a button suture-suture assembly, comprising:
- a suspension device defining a first end and comprising a button and a locking pin, the button having a proximal facing surface, a distal facing surface configured to mate or fix to tissue, bone or other member, and a receiving surface configured to mate with the locking pin, the locking pin having a mating surface configured to mate with the receiving surface of the button and at least one concave indentation formed in the mating surface and configured to receive at least a portion of a suture therein for passage or capture;
- at least one suture interacting with the suspension device, the at least one suture having a proximal end portion extending proximally from the suspension device, the at least one suture passing through the suspension device and forming a first loop portion extending distally from the suspension device, the first loop portion defining a second end configured to mate with tissue, bone, or other member, the at least one suture passing through the suspension device between the receiving surface of the button and the mating surface of the locking pin within the at least one concave indentation;
- wherein said button-suture assembly comprises a first state defining a first distance between the first and second ends and a second state defining a second distance between the first and second ends, the second distance being less than the first distance;
- and
- wherein the proximal end portion of the suture is configured to be pulled taut in the proximal direction when the first end of the button-suture assembly is mated with a first tissue and the second end of the button-suture assembly is mated with a second tissue, bone or other member, thereby creating tension in the suture which causes the button-suture assembly to transition from the first state to the second state, where the second state is maintained via compression and friction applied to the suture between the receiving surface of the button and the mating surface of the locking pin within the at least one concave indentation;
- manipulating at least one suture through tissue, bone, or other member on a first end and the suspension device on a second end to create suture loops between the tissue, bone, or other member and the suspension device, wherein loose suture ends exit the suspension device away from the second end;
- applying tension in the proximal direction to the loose suture ends causing the locking pin to translate proximally relative to the button;
- and
- releasing the tension on the loose suture ends, wherein the tension stored in the suture loops causes the locking pin to translate distally and apply pressure to the at least one suture between the locking pin and button resulting in the but suspension device locking in place and further resisting lengthening of the suture loops.
7 more elements
Dependencies are inferred from the claim text.