Sliding patio door hardware -Latch broken

Thanks for posting. The thumb lever can be replaced with the 82-107. However, it's likely the mortise lock in the door is broken and what caused the thumb lever to fail also. To find out, try manually 'throwing' the lock with a slotted screwdriver. If it doesn't budge, you know it also should be replaced. See the 82-260.

Alternate image for 82-260