The St. Louis Blues are among those looking for help at the trade deadline, but they may just have found it from an internal source. Zach Sanford, the prospect included in last season’s Kevin Shattenkirk deal, has been activated off injured reserve and assigned to the San Antonio Rampage. Sanford hadn’t played yet this season as he worked his way back from a shoulder injury. Though he’s headed to San Antonio to make his season debut, he could be an option for the Blues down the stretch if he proves healthy and ready to contribute.