Imager based object positioner system and method

• US 8,007,172 B2
• Filed: 10/01/2009
• Issued: 08/30/2011
• Est. Priority Date: 12/01/2004
• Status: Active Grant

• Current Assignee: Trinity Orthopedics, LLC
• Original Assignee: Trinity Orthopedics, LLC
• Inventors: Marino, James F.
• Primary Examiner(s): Ho; Allen C.
• Application Number:
  US12/572,216
• Publication Number:
  US 20100111267A1
• Time in Patent Office: 698 Days
• Field of Search: 378/42, 378/196, 378/197, 378/198, 378/204, 378/205, 378/207, 378/208, 378/209, 600/426, 600/429
• US Class Current: 378/204
• CPC Class Codes: A61B 6/4283 characterised by a detector unit being housed in a cassette
• CPC Class Codes: A61B 6/4405 the apparatus being movable or portable, e.g. handheld or mounted on a trolley
• CPC Class Codes: A61B 6/4423 related to hygiene or sterilisation

Abstract

An apparatus and a method for guiding the placement of an object to a desired location based on an image generated by an image intensifier where the apparatus includes a first coupling mechanism that is configured to be releasably attachable to one of the transmitter and receiver of the image intensifier and a second coupling mechanism that is coupled to the first coupling mechanism and includes an object holding mechanism, the object holding mechanism is configured to releasably hold the object and where at least a portion of the second coupling mechanism is visible in the image generated by the image intensifier when the apparatus is attached to the image intensifier.

Claims

1. A device to assist in the alignment of a visualized axis of an image field of an X-ray machine with an object, comprising:

a frame comprising an annular rail that attaches to a portion of the X-ray machine such that the annular rail is adapted to encircle a transmitter or receiver of the X-ray machine and such that the frame conforms to the perimeter of the image field when the frame is attached to the X-ray machine;

a boom support arm attached to the frame and extending vertically from the frame;

a boom attached to the boom support arm such that a radiolucent portion of the boom extends into the image field at a right angle to the boom support arm and generally parallel to the annular rail of the X-ray machine when the device is attached to the X-ray machine; and

at least one radio-opaque marker positioned on the radiolucent portion of the boom such that the radio-opaque marker is in the image field when the device is attached to the X-ray machine.

2. A device as in claim 1, further comprising a bushing on the boom, wherein the boom supports the bushing in a position such that an aperture in the bushing is aligned with the visualization axis.

3. A device as in claim 2, wherein the support arm rotates along the annular rail to a variety of locations from which the boom extends into the image field and wherein a bushing aperture on the boom remains in a position that is aligned with the visualization axis while the support arm rotates.

4. A device as in claim 1, wherein the annular rail includes a clamp system including three pads that engage the X-ray machine to support the rail on the X-ray machine, wherein each pad is positioned on the rail 120 degrees apart from an adjacent pad.

5. A device as in claim 4, wherein the clamp system includes a single securing mechanism that advances only one of the pads toward the X-ray machine to cause the three pads to clamp onto the X-ray machine.

6. A device as in claim 5, wherein the securing mechanism includes a torque limiter mechanism that limits torque applied and thus the compressive load to the X-ray machine so as to prevent damage to the X-ray machine.

7. A device as in claim 1, wherein the frame folds to a size that permits placement of the frame in an autoclave.

8. A device as in claim 1, further comprising a vertical offset mechanism coupled to the support arm or the frame, wherein the vertical offset mechanism can be adjusted to vary the amount of vertical offset between the boom and the frame.

9. A device as in claim 1, wherein the boom support arm detaches from the frame to permit the boom to be removed from the image field of the X-ray machine.

10. A device as in claim 1, further comprising a spatial positioner comprising:

a clamp that attaches to a surgical table;

a stanchion extending vertically from the clamp;

an engager arm;

a first joint that couples the engager arm to the stanchion and that permits variation in the orientation of the engager arm relative to the stanchion;

a bushing engager that engages a bushing on the boom;

a second joint that couples the bushing engager to the engager arm;

wherein the first and second joint permit the bushing engager to be moved to a lockable position wherein the bushing engager is engaged with the bushing.

11. A device as in claim 1, in which the visualized axis within the image field is coaxial with the central image beam of the x-ray machine, such that the effects of beam divergence is absent or negligible.

12. A device as in claim 1, in which the boom can be rotated on the boom support to a position outside of the image field as well as rotated back to a mechanically defined and aligned position within the field.