Hi Uwe, Not sure what kind of faucet you have, Delta, Pfister, Moen, or Grohe. I believe you may be able to replace the "hand held". Try Lowes or Home Depot. A word of caution when you remove the head, Tape off the flex hose or tie it in a knot because it's a hassle trying to get up thru the fixture once it has fallen out.
Regards, Fred