Yep, I have wrist guards in my snowboarding gloves and they have saved me a couple of times!
They're kinda like these:
http://www.campmor.com/webapp/wcs/stores/servlet/ProductDisplay?productId=39159312&memberId=12500226

These will work with your existing gloves:
http://www.boardtactics.com/cat/SNOW/Protective/Wrist+Guards

2000 SVT Turbo 295hp/269ftlb@12psi #1 for Bendix Brakes Kits! Knuckles rebuilt w/new bearings $55 AUSSIE ENDLINKS $70 Gutted pre-cats $80/set A lack of planning on your part does not constitute an emergency on mine!