Coaxial laser targeting device for use with x-ray equipment and surgical drill equipment during surgical procedures

• US 5,031,203 A
• Filed: 02/09/1990
• Issued: 07/09/1991
• Est. Priority Date: 02/09/1990
• Status: Expired due to Term

• Current Assignee: Trecha Intellectual Properties, Inc.
• Original Assignee: Randal R. Trecha
• Inventors: Trecha, Randal R.
• Primary Examiner(s): Westin, Edward P.
• Assistant Examiner(s): Chu, Kim-Kwok
• Application Number:
  US07/477,728
• Time in Patent Office: 515 Days
• Field of Search: 378/206, 378/207, 378/205, 350/600, 350/394, 128/898
• US Class Current: 378/205
• CPC Class Codes: A61B 17/1703 using imaging means, e.g. by X-rays
• CPC Class Codes: A61B 17/1725 for applying transverse screws or pins through intramedullary nails or pins
• CPC Class Codes: A61B 2090/395 with marking agent for marking skin or other tissue
• CPC Class Codes: A61B 90/13 guided by light, e.g. laser pointers

Abstract

In an x-ray machine having an x-ray gun portion for emitting x-ray radiation along a longitudinal axis and an x-ray collector portion spaced from the gun portion along the longitudinal axis for receiving the x-ray radiation, the present invention provides a laser light emitting member disposed on the x-ray gun portion for emitting a beam of visible laser light. A target grid member is disposed on the x-ray collector portion for targeting the visible laser light in coaxial relationship with the longitudinal axis of the x-ray radiation between the gun portion and the collector portion. One or more radiolucent laser light redirecting members are provided for adjustably redirecting the visible laser light from the laser light emitting member into coaxial alignment with the longitudinal axis of the x-ray radiation to give a visual indication of the central longitudinal axis of the x-ray radiation.

Claims

1. In an x-ray machine having an x-ray gun portion for emitting x-ray radiation along a longitudinal axis and an x-ray collector portion spaced from the x-ray gun portion along the longitudinal axis for receiving the x-ray radiation, the improvement comprising;

laser light emitting means disposed on the x-ray gun portion for emitting a single elongated beam of visible laser light;

target grid means disposed on the x-ray collector portion for targeting the single elongated beam of visible laser light in coaxial relationship with the longitudinal axis of the x-ray radiation between the x-ray gun portion and the x-ray collector portion; and

radiolucent laser light redirecting means for adjustably redirecting the single elongated beam of visible laser light from the laser light emitting means into coaxial alignment with the longitudinal axis of the x-ray radiation to give a visual indication of the central longitudinal axis of the x-ray radiation between the x-ray gun portion and the x-ray collector portion of the x-ray machine.

2. The improvement of claim 1, wherein the laser light emitting means comprises a helium neon laser.

3. The improvement of claim 2, wherein the helium neon laser comprises a low wattage laser of approximately 0.5 milliwatts power.

4. The improvement of claim 1, wherein the radiolucent laser light redirecting means comprises a radiolucent plastic mirror adjustably mounted to broadcast the single elongated beam of visible laser light at 90°

with respect to the original beam emitted by the laser light emitting means.

5. The improvement of claim 1, wherein the target grid means further comprises a plastic member approximately equal in size to a collector plate of the collector portion of the x-ray equipment, said plastic member adapted to be mounted on the collector plate and having metal wires embedded in the plastic member at 90°

with respect to one another to form a cross-hair type arrangement.

6. The improvement of claim 5, wherein the plastic member comprises a disk.

10. The improvement of claim 1 further comprising:

drill means disposed between the laser light emitting means and the target grid means, the drill means having a drill bit with a longitudinal axis in coaxial alignment with the single elongated beam of visible laser light.

7. In an x-ray machine having an x-ray gun portion for emitting x-ray radiation along a longitudinal axis and an x-ray collector portion spaced from the x-ray gun portion along the longitudinal axis for receiving the x-ray radiation, the improvement comprising;

a low wattage helium neon laser of approximately 0.5 milliwatts power disposed on the x-ray gun portion for emitting a beam of visible light;

a plastic disk approximately equal in size to a collector plate of the x-ray collector portion and adapted to be mounted on the collector plate, the disk having metal wires embedded in the plastic disk at 90°

with respect to one another to form a cross-hair type arrangement for targeting the visible laser light in coaxial relationship with the longitudinal axis of the x-ray radiation between the x-ray gun portion and the x-ray collector portion;

a radiolucent plastic mirror adapted to broadcast the visible laser light at 90°

with respect to an original beam emitted from the laser, the radiolucent plastic mirror adjustably mounted for redirecting the visible laser light from the laser into coaxial alignment with the longitudinal axis of the x-ray radiation to give a visual indication of the central longitudinal axis of the x-ray radiation; and

drill means disposed between the laser light emitting means and the target grid means, said drill means having a drill bit with a longitudinal axis in coaxial alignment with the beam of visible laser light.

8. The improvement of claim 7, laser mounted externally on the gun portion of C-arm image intensifier x-ray equipment.

9. The improvement of claim 7, wherein the laser is mounted internally within the gun portion of C-arm image intensifier x-ray equipment.

11. A coaxial target laser aiming device for use with x-ray radiography equipment and drill equipment comprising:

x-ray gun means for emitting x-ray radiation along a longitudinal axis;

x-ray collector means spaced along the longitudinal axis from the x-ray gun means for receiving the x-ray radiation;

laser light emitting means disposed on the x-ray gun means for emitting a single elongated beam of visible laser light;

target grid mean disposed on the x-ray collector means for targeting the single elongated beam of visible laser light in coaxial alignment with the longitudinal axis of the x-ray radiation passing between the x-ray gun means and the x-ray collector means;

radiolucent laser light redirecting means for adjustably redirecting the single elongated beam of visible laser light from the laser light emitting means into coaxial alignment with the longitudinal axis of the x-ray radiation passing between the x-ray gun means and the x-ray collector means; and

drill means disposed between the laser light emitting means and the target grid means, the drill means having a drill bit with a longitudinal axis in coaxial alignment with the single elongated beam of visible laser light.

12. The device of claim 11, wherein the laser light emitting means comprises a helium neon laser.

13. The device of claim 12, wherein the helium neon laser comprises a low wattage laser of approximately 0.5 milliwatts power.

14. The device of claim 11, wherein the radiolucent laser light redirecting means comprises a radiolucent plastic mirror adjustably mounted to broadcast the single elongated beam of visible laser light at 90°

with respect to the original beam emitted by the laser light emitting means.

15. The device of claim 11, wherein the target grid means further comprises a plastic member approximately equal in size to a collector plate of the x-ray collector means, said plastic member adapted to be mounted on the collector plate and having metal wires embedded in the plastic member at 90°

with respect to one another to form a cross-hair type arrangement.

16. The device of claim 11, further comprising a C-arm image intensifier having an x-ray gun means portion and an x-ray collector means portion with said laser light emitting means disposed on the x-ray gun means portion of the C-arm image intensifier.

17. The device of claim 11, further comprising a C-arm image intensifier having an x-ray gun means portion and an x-ray collector means portion with said laser light emitting means mounted internally within the x-ray gun means portion of the C-arm image intensifier.