Implant with ability to capture extravasating fixation medium

Abstract

A surgical implant with recesses adapted to capture fixation medium that extravasates during implantation. The implant includes an elongated stem having a distal tip configured for insertion into an implant receiving area of a patient. A collar having recesses for capturing extravasating fixation medium is attached on the stem. The collar can be fixed to the stem by a separable collar-engagement feature or the collar can be fixed to the stem via structures on the stem.

What is claimed is: 
     
         1 . A method of using an implant to collect excess fixation medium extravasating from an implant receiving area during introduction of the implant, the method comprising:
 a. introducing the implant into the implant receiving area, wherein the implant includes
 an elongated stem having a distal tip, a proximate end opposite the distal tip, and at least one flange between the distal tip and proximate tip; 
 a collar having a proximate end, a distal end opposite the proximate end, an exterior surface extending therebetween, a distal surface located adjacent the distal end and configured to abut a resected bone located adjacent the implant receiving area, at least one recess extending from the distal surface into the collar and configured to receive extravasating fixation medium, and an inner through bore extending between the proximate and distal ends of the collar and having at least one interior thread located on at least a portion of the inner through bore, wherein the at least one interior thread is sized and shaped to receive the at least one flange and lock the at least one flange in place; and 
   b. contacting the distal surface to the extravasating fixation medium such that the at least one recess receives excess extravasating fixation medium therein.   
     
     
         2 . The method of  claim 1 , further comprising introducing fixation medium to the implant receiving area prior to the introducing step. 
     
     
         3 . The method of  claim 1 , further comprising introducing the collar over the stem, translating the collar along the stem until the collar reaches the at least one flange of the stem, and then rotatably engaging the at least one interior thread of the collar with the at least one flange of the elongated stem. 
     
     
         4 . The method of  claim 3 , wherein the rotatably engaging step includes rotating the collar. 
     
     
         5 . The method of  claim 4 , wherein the rotatably engaging step includes rotating the collar approximately three-quarters of a full rotation. 
     
     
         6 . The method of  claim 3 , wherein the rotatably engaging step includes rotating the elongated stem. 
     
     
         7 . The method of  claim 3 , wherein the rotatably engaging step includes rotating the collar and the elongated stem together. 
     
     
         8 . The method of  claim 1 , wherein the at least one flange includes a first flange on a first side of the elongated stem and a second flange on a second side of the elongated stem opposite the first flange. 
     
     
         9 . A method of using an implant to collect excess fixation medium extravasating from an implant receiving area during introduction of the implant, the method comprising:
 a. assembling the implant, wherein the implant includes
 an elongated stem having a distal tip, a proximate end opposite the distal tip, and at least one flange between the distal tip and proximate tip; 
 a collar having a proximate end, a distal end opposite the proximate end, an exterior surface extending therebetween, a distal surface located adjacent the distal end and configured to abut a resected bone located adjacent the implant receiving area, at least one recess extending from the distal surface into the collar and configured to receive extravasating fixation medium, and an inner through bore extending between the proximate and distal ends of the collar and having at least one interior thread located on at least a portion of the inner through bore, wherein the at least one interior thread is sized and shaped to receive the at least one flange and lock the at least one flange in place; 
   b. introducing the implant into the implant receiving area; and   c. contacting the distal surface to the extravasating fixation medium such that the at least one recess receives excess extravasating fixation medium therein;   wherein the implant assembling step includes introducing the collar over the stem, translating the collar along the stem until the collar reaches the at least one flange of the stem, and then rotatably engaging the at least one interior thread of the collar with the at least one flange of the elongated stem.   
     
     
         10 . The method of  claim 9 , further comprising introducing fixation medium to the implant receiving area prior to the introducing step. 
     
     
         11 . The method of  claim 9 , wherein the rotatably engaging step includes rotating the collar. 
     
     
         12 . The method of  claim 11 , wherein the rotatably engaging step includes rotating the collar approximately three-quarters of a full rotation. 
     
     
         13 . The method of  claim 9 , wherein the rotatably engaging step includes rotating the elongated stem. 
     
     
         14 . The method of  claim 9 , wherein the rotatably engaging step includes rotating the collar and the elongated stem together. 
     
     
         15 . The method of  claim 9 , wherein the at least one flange includes a first flange on a first side of the elongated stem and a second flange on a second side of the elongated stem opposite the first flange. 
     
     
         16 . A surgical implant, the implant comprising:
 an elongated stem having a distal tip, a proximate end opposite the distal tip, and at one least connection element between the distal tip and proximate tip; and   a collar having a proximate end, a distal end opposite the proximate end, an exterior surface extending therebetween, a distal surface located adjacent the distal end, at least one recess extending from the distal surface into the collar, and an inner through bore extending between the proximate and distal ends of the collar and having at least one connection receiving element that is sized and shaped to receive the at least one connection element and lock the at least one connection element in place.   
     
     
         17 . The implant of  claim 16 , wherein the at least one recess is configured to receive and collect extravasating fixation medium extravasating from an implant receiving area during introduction of the implant into a patient's body. 
     
     
         18 . The implant of  claim 16 , wherein the at least one connection element includes at least one flange. 
     
     
         19 . The implant of  claim 18 , wherein the at least one connection receiving element includes at least one interior thread that is sized and shaped to receive the at least one flange and lock the at least one flange in place. 
     
     
         20 . The implant of  claim 18 , wherein the at least one flange includes a first flange on a first side of the elongated stem and a second flange on a second side of the elongated stem opposite the first flange.