Patent ID: 6010508
Filing Date: 2000-01-04
Classification: A61B,A61F

Abstract:
An impact tool for use with an extraction implement, the impact tool comprising:a body having a first end, a second end, and an opening extending therethrough, the opening having a first diameter at the first end, a second diameter at the second end, and a transition portion which tapers between said first and second diameters,a calibration knob connected with the second end of the body,a rod having a first end and a second end, the first end of the rod being located within the body, the second end of the rod being configured to connect with the extraction implement,a head extending around the edge of the first end of the rod,a collar located within the body and slidably engaging the rod between the first and second ends thereof and slidably engaging the body,a trigger extending through the collar,an impact spring positioned between the collar and the calibration knob, the impact spring biasing the collar towards the first end of the body,and a return spring positioned between the head of the rod and the collar, the return spring biasing the head of the rod away from the collar,wherein, when the extraction implement is engaged with an object to be pulled and the body of the impact tool is pulled, the collar is moved within the opening of the body between the first and second diameters, causing the trigger to move between an engaged position and a released position, thereby releasing the collar to impact the head of the rod, causing an extraction force.