Claims
- 1. A surgical device comprising:
a base unit; an elongated guide stem having a passage therein, a ball attached to one end of the guide stem, said ball having a passage therein, said ball fitting within the base unit, said ball capable of rotating with respect to the base unit; and a guide stem cable mount associated with said guide stem.
- 2. The surgical device of claim 1 further comprising a cable having an end attached to said guide stem cable mount such that moving the cable moves the guide stem.
- 3. The surgical device of claim 2, wherein the base unit includes a recess for receiving a cable.
- 4. The surgical device of claim 2, further comprising a locking member which engages the ball and fixes the position of the ball and guide stem upon tightening the locking member when the ball is properly positioned.
- 5. The surgical device of claim 2, further comprising a locking member which engages the ball and fixes the position of the ball and guide stem upon tightening the locking member when the ball is properly positioned, said locking member having at least one slot therein through which the cable passes.
- 6. The surgical device of claim 2, further comprising a positioning stem, said positioning stem having an end which fits into the passage within the guide stem, said positioning stem having a locator visible in a scanning environment.
- 7. The surgical device of claim 1 wherein the guide stem cable mount is attached to the guide stem.
- 8. The surgical device of claim 2 further comprising a surgical instrument advancement assembly.
- 9. The surgical device of claim 1 further comprising a sleeve placed over the guide stem between the base and the surgical instrument advancement assembly, said sleeve placing the surgical instrument advancement assembly in position to engage the guide stem.
- 10. The surgical device of claim 8 wherein the surgical instrument advancement assembly further comprises:
a guide stem mounting block; a surgical instrument lock; a cable for moving the surgical instrument lock with respect to the guide stem mounting block.
- 11. The surgical device of claim 10 wherein the surgical instrument advancement assembly further comprises
a thumb ring attached at one end of the cable; a finger ring attached near the end of the cable having the thumb ring attached thereto, wherein the surgical instrument lock moves with respect to the guide stem mounting block in response to the thumb ring moving with respect to the finger ring.
- 12. The surgical device of claim 10 wherein the guide stem has a groove therein near the opposite end distant from the ball end, said surgical device further comprising a sleeve placed over the guide stem between the guide stem cable mount and the surgical instrument advancement assembly, said guide stem mounting block including a portion which engages the guide stem, said sleeve placing the guide stem mounting block a selected distance away from the locking member.
- 13. A surgical apparatus comprising:
a first base unit; a first elongated guide stem having a passage therein, a ball attached to one end of the guide stem, said ball having a passage therein, said ball fitting within the first base unit, said ball capable of rotating with respect to the first base unit; a first guide stem cable mount associated with said first elongated guide stem; a second base unit; a second elongated guide stem having a passage therein, a ball attached to one end of the guide stem, said ball having a passage therein, said ball fitting within the second base unit, said ball capable of rotating with respect to the second base unit; a second guide stem cable mount associated with said second elongated guide stem; and a cable connected at one end to the first guide stem cable mount and connected at the other end to the second guide stem cable mount, wherein the first elongated guide stem moves in response to moving the second elongated guide stem.
- 14. The surgical apparatus of claim 13 wherein at least a portion of said apparatus is used in an imaging environment, said cable made of a material which is compatible in the imaging environment.
- 15. The surgical apparatus of claim 13 wherein said cable is a filament.
- 16. The surgical apparatus of claim 13 wherein said first base unit has a recess for receiving said cable and said second base unit has a recess for receiving said cable, said recesses acting as a cable guide.
- 17. The surgical apparatus of claim 13 further comprising a plurality of cables, each of said cables connected at one end to the first guide stem cable mount and connected at the other end to the second guide stem cable mount, wherein said first base unit has a plurality of recesses for receiving said plurality of cables and said second base unit has a plurality of recesses for receiving said plurality of cables, said recesses acting as a cable guides.
- 18. The surgical apparatus of claim 17 further comprising:
a first locking member for fixing the position of the first elongated guide stem with respect to the first base unit; and a second locking member for fixing the position of the second elongated guide stem with respect to the second base unit, said first locking member and said second locking member having slots therein to accommodate the plurality of cables.
- 19. The surgical apparatus of claim 13 further comprising:
a first locking member for fixing the position of the first elongated guide stem with respect to the first base unit; and a second locking member for fixing the position of the second elongated guide stem with respect to the second base unit.
- 20. The surgical apparatus of claim 13 wherein
one of said first base unit and first elongated guide stem, or said second base unit and second elongated guide stem is located in an imaging environment, and the other of said first base unit and first elongated guide stem, or said second base unit and second elongated guide stem is located outside an imaging environment.
- 21. The surgical apparatus of claim 20 further comprising:
a surgical instrument to be passed into the body of a patient associated with the one of said first base unit and first elongated guide stem, or said second base unit and second elongated guide stem is located in an imaging environment; and a surgical instrument advancement assembly.
- 22. The surgical apparatus of claim 21 wherein the surgical instrument advancement assembly further comprises:
a guide stem mounting block for mounting on the elongated guide stem; a surgical instrument lock; a cable for moving the surgical instrument lock with respect to the guide stem mounting block.
- 23. The surgical apparatus of claim 22 wherein the surgical instrument advancement assembly further comprises
a thumb ring attached at one end of the cable; and a finger ring attached near the end of the cable having the thumb ring attached thereto, wherein the surgical instrument lock moves with respect to the guide stem mounting block in response to the thumb ring moving with respect to the finger ring.
- 24. The surgical apparatus of claim 22 wherein said surgical instrument lock further comprises:
an elastomeric sleeve positioned around the surgical instrument; a first substantially inelastic end; and a second substantially inelastic end, wherein drawing the first end toward the second end causes the elastomeric sleeve to engage the surgical instrument.
- 25. The surgical apparatus of claim 22 further comprising a surgical instrument advancement lock for locking the position of the surgical instrument with respect to the guide stem.
- 26. The surgical apparatus of claim 25 further comprising:
an L-shaped surgical instrument advancement lock; and a locking pin for holding the advancement lock in place.
- 27. The surgical apparatus of claim 23 further comprising the surgical instrument advancement assembly further comprises a sleeve between the thumb ring attached at one end of the cable and the finger ring attached near the end of the cable, wherein the sleeve has markings thereon corresponding to the movement instrument lock moves with respect to the guide stem mounting block.
- 28. A method for introducing a surgical instrument into the body of a patient, said patient positioned in a scanning environment, said method comprising the steps of:
selecting a target within a patient; attaching a first base and first movable elongated guide stem to the patient; connecting the first base and first movable elongated guide stem to a second base and second movable elongated guide stem using cables; placing a positioning stem within the guide stem, said positioning stem having a first portion readable within the scanning device and a second portion readable within the scanning environment; and moving a second elongated guide stem with respect to the second base, said second base and said second movable elongated guide stem positioned outside the scanning environment, wherein moving the second elongated guide stem with respect to the second base causes movement of the first movable elongated guide stem with respect to the first base.
- 29. The method of claim 28 further comprising the steps of:
aligning a passage in the first elongated guide stem with the target within the patient; and locking the first elongated guide stem with respect to the first base.
- 30. The method of claim 29 further comprising the steps of:
replacing the positioning stem with a surgical instrument at the first guide stem; and introducing the surgical instrument into the patient.
- 31. The method of claim 30 further comprising the steps of:
locking the surgical instrument into a position with respect to the guide stem.
CROSS-REFERENCE TO RELATED APPLICATION
[0001] This application is a continuation-in-part of U.S. patent application Ser. No. 08/919,649 entitled “Surgical Instrument Trajectory Guide Method and Apparatus”, filed on Aug. 28, 1997 which in turn is a continuation-in-part of U.S. patent application Ser. No. 08/856,664 entitled “Surgical Instrument Trajectory Guide Method and Apparatus”, filed on May 15, 1997. This application is also a continuation-in-part of U.S. patent application Ser. No. 09/058,092 entitled Trajectory Guide Method and Apparatus for use in Magnetic Resonance and Computerized Tomographic Scanners”, filed on Apr. 9, 1998.
Divisions (2)
|
Number |
Date |
Country |
Parent |
09363510 |
Jul 1999 |
US |
Child |
09970262 |
Oct 2001 |
US |
Parent |
09078913 |
May 1998 |
US |
Child |
09363510 |
Jul 1999 |
US |
Continuation in Parts (3)
|
Number |
Date |
Country |
Parent |
09058092 |
Apr 1998 |
US |
Child |
09078913 |
May 1998 |
US |
Parent |
08919649 |
Aug 1997 |
US |
Child |
09058092 |
Apr 1998 |
US |
Parent |
08856664 |
May 1997 |
US |
Child |
08919649 |
Aug 1997 |
US |