I disagree with the premise that it's the racquet that "gives" you tennis elbow.
If a racquet alone is to be blamed, answer this: At what point did the racquet suddenly inflict it's damage? Was it the first hit? ..the second game? was it the third set, or the fourth week?? ..At some point - undoubtedly - the elbow must have felt just fine. Then, at some later point, it began to hurt. The problem, then, is NOT the racquet. It is that the player persisted in playing when his/her elbow was bothering them!
If a new racquet presents the elbow with a greater workload - by virtue of being heavier, higher swingweight, less flexible, strung tighter etc.. - then there is the risk of injuring your elbow if you don't ease into using it. Give it time to acclimate! Whatever your form, whatever your fitness, etc... Give your arm time to adjust. Remember, an entire match is comprised of thousands of repititions; a small difference b/w racquets might have little impact after 100 swings, but it may have a huge impact after the 2,220th.
I truly believe that almost everyone could use just about any present day racquet being sold PROVIDED they take time to adjust to it!
My advice: Don't buy a new racquet, then abruptly use it for whole matches! I'd recommmend playing a few games, then go back to your old frame. As time goes by, work up to using the new frame on a full-time basis.