Patent ID: 6400979
Filing Date: 2002-06-04
Classification: A61B

Abstract:
A method for performing radiological-image-guided percutaneous surgery with a system which includes a radiological image generating device for generating an image of a target anatomy of a patient to be operated on, and a needle insertion mechanism having a needle adapted to be inserted into the patient, the method comprising:determining a needle trajectory of the needle by positioning the image generating device for aligning a desired skin insertion site on the patient with a target region of the target anatomy in an image generated by the image generating device; locking the needle along the needle trajectory, the locking being performed by pressing the needle between first and second contact faces of rotational components provided in the needle insertion mechanism such that an axial force directed parallel to a rotational axis of the rotational components effects frictional engagement between the contact faces and the needle, and such that as the rotational components rotate about the rotational axis, the frictional engagement effects a translational motion of the needle; and repositioning the image generating device to obtain a lateral view of the needle trajectory for viewing an insertion depth and path of the needle during insertion thereof into the patient.