ErgoClick™ Mouse Clicking Device

Mouse without lifting a finger. The ErgoClick uses your left palm to perform left, right and double click actions - simply by shifting the weight of your palm.
The ErgoClick is ideal for people who suffer from trigger finger or simply find clicking the mouse to be a painful aspect of their computer interface. Now you can use your left palm to click, while using a traditional mouse in your right hand for cursor control, just as before.

If you are looking for relief from too much mouse clicking, you should also consider a Kinesis USB foot switch. The USB Savant and Savant Elite family of foot switches come factory-programmed to click the mouse, but may also be customized to increase comfort and productivity by performing keyboard actions.