No. Anything that requires you to be cut open or have holes poked into you, anything that requires something to be put into your body that doesn't belong there, is NOT a good form of weight loss at all.
I used to have a gastric band myself, and it nearly killed me. It was removed just in time, and since then I had a closer look at all the procedures that are on offer for weight loss at the moment.
They all have two main things in common:
1. You can cheat, with every single one of them, and despite having the surgery, you can stay just as overweight as you are.
2. It requires an enormous amount of willpower NOT to cheat, and to stick with all the rules and regulations that come with the surgery.
If you have the willpower to stick with all of that, then you would just as much be able to lose the weight without the surgery, because let's face it, in the end, it is willpower and determination that helps you through a diet, or a change of lifestyle and eating habits.
Apart from that, any surgery (or even inserting the balloon, which is the biggest pile of b*ll*cks I've seen in a long while) is extremely dangerous when you're overweight. Most of those procedures severely limit what you can eat, and there is a lot of healthy stuff that you are just not allowed. And most of the the procedures can't stay forever...the balloon has to come out, the band has to come out - after which it is all down to you again, and most people gain the weight back.
More radical procedures like the bypass etc. are known to cause all kinds of health problems, everything from malnutrition to organ failure.
So....to make a long story short...stay away from surgery. Start paying attention to what you eat and how much you eat, control your portions and eat healthy, have an eye on the calories and start exercising...then you're half way there. Without being slashed open and having to live with scars and health problems for the rest of your life.