Knotless orthopedic stabilization system

Abstract

Embodiments of knotless button-suture assemblies for orthopedic stabilization are disclosed. The button-suture assembly includes a button having a first opening, a second opening and a center opening. The assembly further includes a tensioning member having two tensioning member ends exiting from the first opening and the second opening of the button and disposed in the proximal direction. The assembly further includes a locking pin mated with the button through the center opening of the button in such a manner that allows a proximal movement of the tensioning member when a pulling force is applied to the tensioning member ends towards a proximal direction and prevents a distal movement of the tensioning member when the pulling force applied to the loose ends of the tensioning member ceases to exist.

We claim: 
     
         1 . An orthopedic stabilization device comprising:
 a button having a plurality of openings;   a locking pin having a proximal end and a distal end, the locking pin configured to mate with the button through a center opening in the button; and   a tensioning member having two tensioning member ends passing through a first opening and a second opening in the button and disposed outwardly towards a proximal direction of the button, wherein the tensioning member forms one or more tensioning member loops by at least passing through a transverse opening in a distal member of the locking pin.   
     
     
         2 . The orthopedic stabilization device as claimed in  claim 1  further comprising:
 a baseplate having a plurality of holes, wherein the tensioning member passes through two of the plurality of holes and the transverse opening in the distal member of the locking pin to form the one or more tensioning member loops. 
 
     
     
         3 . The orthopedic stabilization device as claimed in  claim 1 , wherein the locking pin translates in a proximal direction relative to the button when a pulling force is applied to the two tensioning member ends towards the proximal direction. 
     
     
         4 . The orthopedic stabilization device as claimed in  claim 3 , wherein the locking pin translates in a distal direction relative to the button when the pulling force ceases to exist subsequent to the applying of the pulling force to the two tensioning member ends towards the proximal direction. 
     
     
         5 . The orthopedic stabilization device as claimed in  claim 1 , wherein the locking pin further comprises two indentations located on the proximal end of the locking pin disposed along the first opening and the second opening respectively to create two corresponding passages between the locking pin and an interior surface of the circumference of the button for the tensioning member to pass through. 
     
     
         6 . The orthopedic stabilization device as claimed in  claim 5 , wherein the passages allow a proximal movement of tensioning member when a pulling force is applied to the tensioning member ends towards the proximal direction. 
     
     
         7 . The orthopedic stabilization device as claimed in  claim 6 , wherein the passages prevent a distal movement of tensioning member when the pulling force ceases to exist subsequent to the applying of the pulling force to the tensioning member ends. 
     
     
         8 . The orthopedic stabilization device as claimed in  claim 1 , wherein the tensioning member corresponds to one of: a coreless suture, a suture with a jacket and a central core, and a tape. 
     
     
         9 . The orthopedic stabilization device as claimed in  claim 1 , wherein the tensioning member has a length that lies in the range of around 150 mm to around 1000 mm. 
     
     
         10 . The device as claimed in  claim 1 , wherein the inner circumference of the locking pin is threaded and wherein the button has one or more tool access cuts on an exterior proximal surface. 
     
     
         11 . A suspension device for orthopedic stabilization, the suspension device comprising:
 a button having a first opening, a second opening and a center opening; and   a locking pin having a proximal member and a distal member, wherein the center opening of the button is configured to receive the distal member of the locking pin to form a mating arrangement configured to:
 allow a proximal movement of a tensioning member passing through the first opening and the second opening when a pulling force is applied to the loose ends of the tensioning member in a proximal direction with respect to the button; and 
 prevent a distal movement of the tensioning member when the pulling force applied to the loose ends of the tensioning member ceases to exist. 
   
     
     
         12 . The suspension device as claimed in  claim 11 , wherein the locking pin translates in a proximal direction relative to the button when the pulling force is applied to the loose ends of the tensioning member towards the proximal direction. 
     
     
         13 . The suspension device as claimed in  claim 12 , wherein the locking pin translates in a distal direction relative to the button when the pulling force ceases to exist subsequent to the applying of the pulling force to the loose ends of the tensioning member towards the proximal direction. 
     
     
         14 . The suspension device as claimed in  claim 11 , wherein the locking pin has two indentations located on the proximal member of the locking pin disposed along the first opening and the second opening respectively to create two corresponding passages between the locking pin and an interior surface of the circumference of the button for the tensioning member to pass through. 
     
     
         15 . The suspension device as claimed in  claim 14 , wherein the mating arrangement creates one or more pinch points in the two passages when the pulling force ceases to exist subsequent to the applying of the pulling force to the loose ends of the tensioning member. 
     
     
         16 . A knotless button-suture assembly for orthopedic stabilization, the button-suture assembly comprising:
 a button having a first opening, a second opening and a center opening;   a tensioning member having two tensioning member ends exiting from the first opening and the second opening of the button and disposed in the proximal direction; and   a locking pin mated with the button through the center opening of the button in such a manner that:
 allows a proximal movement of the tensioning member when a pulling force is applied to the two tensioning member ends towards a proximal direction; and 
 prevents a distal movement of the tensioning member when the pulling force applied to the two tensioning member ends ceases to exist. 
   
     
     
         17 . The knotless button-suture assembly as claimed in  claim 16 , wherein the locking pin comprises a proximal member and a distal member and wherein the distal member has a transverse opening. 
     
     
         18 . The knotless button-suture assembly as claimed in  claim 17  further comprising:
 a baseplate having a plurality of holes, wherein the tensioning member passes through two of the plurality of holes and the transverse opening in the distal member of the locking pin to form one or more tensioning member loops. 
 
     
     
         19 . The knotless button-suture assembly as claimed in  claim 16 , wherein the locking pin has two indentations located on the proximal member of the locking pin disposed along the first opening and the second opening respectively to create two corresponding passages between the locking pin and an interior surface of the circumference of the button for the tensioning member to pass through. 
     
     
         20 . The knotless button-suture assembly as claimed in  claim 19 , wherein the locking pin mated with the button creates one or more pinch points in the two passages when the pulling force ceases to exist after the applying of the pulling force to the two tensioning member ends.