Description  Claims  Drawing  Cited references 

DE202011110041U1   [0007] 
EP0908288A1   [0008] 
US6094781A   [0009] 
US2012088005A1   [0010] 
US6368536B1   [0011] 
EP1273422A1   [0012] 
US6199460B1   [0013]