Orthopedic jig, pin, and method
View Patent ↗An orthopedic jig and pins therefore are disclosed that allow the pins to be pre-loaded into apertures through the jig before the jig is positioned at a desired location with respect to a bone during an orthopedic surgical procedure. At least one of the pin and/or jig includes a retention mechanism whereby the pin can be inserted into the bore and releasably restrained therein until the jig is place is the selected position and the pins driven into the bone.
1. A method of providing a surgical orthopedic pin to be used with a jig having a bore therein, said method comprising the steps of:
providing a pin having a shaft adapted to engage a bone and a restraining device separate from and carried by the shaft, the restraining device comprising a resilient member that is compressible to press radially outwardly from the shaft;
providing a cutting jig with a bore;
pre-loading the pin through the bore defined by the jig at a location removed from the bone; and
releasably restraining the pin within the bore by the restraining device prior to fixation of the pin to the bone in an inoperative position outside the bone at the location removed from the bone.
2. The method of claim 1 , including the step of disposing the restraining device about the shaft and disposing the restraining device in the bore for engagement with the jig.
3. The method of claim 1 , wherein the step of providing the pin includes providing the resilient member as a tension ring about the shaft and disposing the restraining device in the bore for engagement with the jig.
4. The method of claim 3 , wherein the step of providing the pin includes providing a peripheral groove in the shaft and disposing the tension ring in the groove.
5. The method of claim 3 , wherein the step of providing the pin includes providing the tension ring with a peripheral surface disposed radially beyond an adjacent surface of the shaft in a relaxed state.
6. The method of claim 1 , wherein the step of providing the pin includes providing the restraining device as a ball plunger carried by the shaft and disposing the restraining device in the bore for engagement with the jig.
7. The method of claim 1 , wherein the step of providing the pin includes providing the restraining device as an adhesive about the shaft and disposing the restraining device in the bore for engagement with the jig.
8. The method of claim 7 , wherein the step of providing the restraining device as an adhesive comprises providing the restraining device as a film of adhesive and disposing the film of adhesive around the shaft and disposing the restraining device in the bore for engagement with the jig.
9. The method of claim 1 , wherein the step of providing the pin includes providing the pin with threads adapted for screwing the shaft into a bone.