Can certain breast pumps help me pump more milk?

Yes. There are manual and electric breast pumps; electric are stronger and typically help you pump more milk. Also pumping both sides at once can help stimulate more flow. Putting the electric pump on the highest comfortable setting will produce the most milk effectively and efficiently.
Yes. An electric double breastpump can help you pump more (may only be slightly more), but in a shorter period of time than hand-expressing or using a manual pump.

Related Questions

What is the best way to store breast milk I have pumped?

Freeze it! Breast milk should be stored in sterile plastic bags or containers, about 2 oz at a time. It can be frozen and stored for several months. Label the bag with the date. It can also be kept in the refrigerator if it will be used within 48 hours. Remember, when you defrost the milk, do not put it in the microwave! this can cause hot spots and may destroy some of the milks nutrients. Read more...
Fridge or freezer. Breastmilk can be stored in the refrigerator for several days and in the freezer for 3-4 months. The white blood cells in the milk die in the freezer lessening the milk's anti-infective properties slightly so if you're pumping at work for the next day's use, store the milk in sterile bags or bottles in the fridge. But if you're not sure when it will get used it's best to store it in the freezer. Read more...

Pumping my breast isnt working for milk after 1 year. Should I stop?

Yes. A year is longer than usual for "breast feeding" and you could safely stop. I trust that you are getting the baby checked regularly at a well baby clinic. Read more...

How long should I pump both breast after 6 hours of working so that milk will not decrease? (Baby is almost 3 months, drinks 4-5 ounces each feeding)

Long enough 2 'empty. hard to give a firm time. pump enough to get enough milk, and so that you can tell your breasts "feel less full". The more time your breast spend feeling engorged, the more signals that sends to your body to decrease milk production. It would be ideal if you could pump every 3-4 hours, that should help maintain your supply better than going 6 hours. Read more...