Patent ID: 8353944

Claim:
A catheter assembly comprising: a catheter shaft, the catheter shaft having a proximal region, a distal region, and a rotational seal therebetween, the rotational seal comprising a first component and a second component, the first component fixedly engaged to the proximal region of the catheter shaft, the second component fixedly engaged to the distal region of the catheter shaft, the first component and the second component being overlappingly engaged, and the rotational seal having an activated state and a non-activated state, in the non-activated state the first component and the second component being separated by a gap which provides for the distal region of the catheter shaft to be rotatable relative to the proximal region of the catheter shaft, in the activated state the first component and the second component being sealingly engaged together such that the distal region is made static relative to the proximal region; wherein a portion of the first component of the rotational seal is engaged with a portion of the second component of the rotational seal in both the activated and non-activated states to prevent axial separation of the proximal region of the catheter shaft from the distal region of the catheter shaft.