JP2010507407A5 - - Google Patents

Claims (26)

  An intraluminal catheter system that provides optical signals to the patient and carries optical signals from the patient, an outer housing, and longitudinally relative to the outer housing when the catheter system is driven by a pull-back rotation system during operation A catheter carriage interlock device for an optical catheter system comprising a catheter carriage interlock device for an inner carriage that moves and rotates relative to the outer housing, the interlock device comprising:
  A carriage locking mechanism adapted to prevent rotation and longitudinal movement of the inner carriage within the outer housing;
  Engage a carriage locking mechanism when the optical catheter system is connected to the pullback rotation system, and longitudinally relative to the outer housing when the optical catheter system is connected to the pullback rotation system An unlocking mechanism adapted to unlock the carriage locking system to release the inner carriage so that it can rotate and move.   The interlock device of claim 1, wherein the catheter locking mechanism includes at least one lever arm that pivots to engage the inner carriage to prevent rotation of the inner carriage and / or withdrawal from the outer housing.   The interlock device of claim 2, wherein the at least one lever arm mechanically interferes with a withdrawal shoulder on the carriage to prevent withdrawal of the inner carriage from the outer housing.   The interlock device of claim 2, wherein at least one lever arm mechanically interferes with a rotating shoulder on the carriage to prevent rotation of the inner carriage within the outer housing.   5. An interlock device according to claim 4, wherein at least one lever arm mechanically interferes with a withdrawal shoulder on the carriage to prevent withdrawal of the inner carriage from the outer housing.   The interlock device of claim 4, wherein the unlocking mechanism includes a ring that engages the at least one lever arm to pivot the at least one lever arm to disengage from the inner carriage.   The interlock device of claim 1, wherein the intraluminal catheter includes a fiber optic bundle comprising at least one optical fiber for transmitting optical signals between the head of the intraluminal catheter and the inner carriage.   The interlock device of claim 7, wherein the inner carriage includes one or more optical connectors for providing an optical connection to the fiber optic bundle.   The interlock device of claim 1, wherein the intraluminal catheter includes a torque cable for transmitting rotation from the inner carriage to the head of the intraluminal catheter.   The interlock device of claim 1, wherein the inner carriage includes a bayonet member that protrudes axially from a proximal side of the inner carriage to rotationally align the inner carriage during attachment to a pull-back rotation system.   An intraluminal catheter adapted to deliver optical signals to and carry optical signals from the patient, an outer housing, and the outer housing when the catheter system is driven by a pull-back rotation system during operation In an optical catheter system including a catheter carriage interlock device for an inner carriage that moves longitudinally relative to and rotates relative to the outer housing, the inner carriage is selected for the outer housing, including the following steps: To lock automatically:
  Mechanical locking of the inner carriage relative to the outer housing to prevent rotation and longitudinal movement of the inner carriage relative to the outer housing when an optical catheter system is not connected to the pullback rotation system Stages, and
  Unlocking the carriage locking system to release the inner carriage for rotation and movement relative to the outer housing when the optical catheter system is connected to the pullback rotation system.   An intracavity optical catheter that delivers optical signals to and carries optical signals from the patient;
  A rotation system selectively coupled to the catheter and including a frame and a carriage drive system configured to rotate relative to the frame to provide rotational drive to the optical catheter;
  A fixed, non-rotating light source for generating optical signals;
  A rotary optical coupler made to connect an optical signal light source to a rotary carriage optical coupler;
  A delivery channel carried to the rotary carriage drive system for transmitting optical signals from the rotary optical coupler to the intracavity optical catheter;
  A delivery signal detector configured to detect an optical signal carried to the rotating carriage drive system and transmitted by the delivery channel to the intracavity optical catheter;
  A signal collector carried in a rotating carriage drive system and adapted to detect the optical signal carried from the patient by an optical catheter;
Intracavity optical analysis system.   13. The noise suppression system is further configured to reduce noise from the optical signal from the patient by reference to the signal detected by the delivery signal detector and the signal detected by the collection signal detector. Intracavity optical analysis system.   14. The intracavitary optical analysis system of claim 13, wherein the noise suppression system comprises a rotary coupler suppression system adapted to reduce noise introduced into the signal by the rotary optical coupler from the patient.   14. The intracavitary optical analysis system of claim 13, wherein the noise suppression system comprises a laser noise suppression system adapted to reduce noise introduced into the signal by the laser from the patient.   The intraluminal optical analysis system of claim 13, wherein the noise suppression system is configured to reduce noise using common mode rejection.   13. A tap for delivering a portion of the optical signal conveyed by the delivery channel to the delivery signal detector, the delivery signal detector being configured to detect the delivery portion of the signal. Intracavity optical analysis system.   The intracavity optical analysis system according to claim 12, wherein the light source is a tunable laser.   The intracavitary optical analysis system of claim 12, further comprising a divider circuit for dividing the response of the delivery signal detector and the collection signal detector.   13. The intracavitary optical analysis system of claim 12, further comprising an electrical slip ring assembly adapted to electrically convey optical signal information from the patient from the rotating carriage drive system after noise suppression.   Intracavity optical analysis using an intracavity optical catheter that delivers an optical signal to the patient's tissue and enables analysis of the tissue using the optical signal collected from the patient, comprising the following steps: How to implement:
  Generating an optical signal from a fixed non-rotating reference frame;
  Connecting the optical signal generated to the rotating optical catheter;
  Detecting a signal coupled to the rotating optical catheter in a reference rotating frame corresponding to the rotation of the rotating optical catheter; and
  Detecting a signal recovered from the patient in a reference rotating frame.   Reducing noise present in the recovered optical signal by referring to the signal coupled to the rotating catheter detected in the reference rotating frame and the signal recovered from the patient detected in the reference rotating frame The method of claim 21, further comprising:   23. The method of claim 22, comprising reducing noise introduced by coupling the generated optical signal to a rotating optical catheter.   23. The method of claim 22, comprising reducing noise introduced by generating an optical signal.   23. The method of claim 22, comprising reducing noise by common mode cancellation.   The method of claim 21, further comprising diverting a portion of the optical signal generated in the reference rotating frame.