Laser catheter calibrator

• US 8,100,893 B2
• Filed: 11/28/2007
• Issued: 01/24/2012
• Est. Priority Date: 11/28/2007
• Status: Active Grant

• Current Assignee: Spectranetics Corporation (Koninklijke Philips N.V.)
• Original Assignee: Spectranetics Corporation (Koninklijke Philips N.V.)
• Inventors: Dadisman, Tom
• Primary Examiner(s): Johnson, III, Henry M
• Assistant Examiner(s): LIPITZ, JEFFREY BRIAN
• Application Number:
  US11/946,376
• Publication Number:
  US 20090299351A1
• Time in Patent Office: 1,518 Days
• Field of Search: 606/15, 600/117, 600/118, 128/898
• US Class Current: 606/15
• CPC Class Codes: A61B 18/24 with a catheter A61B18/26, A61B18/28 take precedence
• CPC Class Codes: A61B 2017/00725 Calibration or performance testing
• CPC Class Codes: A61B 2090/0813 Accessories designed for easy sterilising, i.e. re-usable

Abstract

A catheter assembly is disclosed according to one embodiment of the invention. The assembly includes a catheter body, a housing and a detector. The catheter includes a distal tip, a proximal end, and a fiber optic extending between the proximal end and the distal tip. The housing may include a channel adapted to support at least a portion of the distal tip of the catheter. The may be detector disposed within the housing so as to be spaced a fixed distance from the distal tip of the catheter. Methods for providing and calibrating a catheter supported within housing are also disclosed according to other embodiments of the invention.

Claims

1. A method of calibrating a laser catheter, comprising:

receiving the laser catheter within a sterile package, wherein the laser catheter includes a catheter body with a distal tip, a proximal end, and a fiber optic extending between the proximal end and the distal tip and wherein the proximal end includes a housing coupled to a connector;

removing at least a portion of the connector from the package;

coupling the connector with a laser system;

coupling the distal tip of the catheter to a portion of the housing;

positioning the distal tip of the catheter a fixed distance from a light detector disposed within the laser system, wherein the distal tip of the catheter and the light detector are optically aligned; and

calibrating the catheter according to a calibration sequence, wherein the calibrating includes activating the laser system and receiving light at the detector, wherein the light is emitted out of the distal tip of the catheter.

2. The method according to claim 1, further comprising receiving calibration parameters from a user at the laser system.

3. The method according to claim 1, further comprising retrieving catheter specific calibration parameters from a memory.

4. The method according to claim 1, further comprising pulsing the laser with a first pulsing sequence.

5. The method according to claim 1, wherein a portion of the catheter body remains in the package when the at least a portion of the connector is removed from the package.

6. The method according to claim 1, wherein the coupling distal tip step comprises connecting a distal end of the catheter to a channel arranged in the housing.

7. The method according to claim 6, wherein the channel further comprises at least one of flange, detent, ring, or disc configured to secure the distal tip in the channel.

23. The method according to claim 1, wherein coupling the connector to the laser system step further comprises the step of detecting with the laser system a catheter type.

8. A method of calibrating a laser catheter with a laser system, comprising the steps of:

providing the laser catheter, wherein the laser catheter comprises a catheter body, a distal end, a proximal end including a connector, and a fiber optic arranged between at least the proximal end and the distal end;

coupling the connector to the laser system, wherein the distal end of the catheter is coupled in a channel region of a housing coupled to the connector;

positioning the distal tip of the catheter a fixed distance from a light detector disposed within the laser system;

activating the laser system to produce light pulses out of a distal end of the catheter;

receiving the light pulses at the light detector; and

comparing energy of the light pulses to a predetermined value and deactivating the laser when the predetermined value has been reached.

9. The method according to claim 8, wherein the predetermined value comprises an energy value in a range from about 5 mJ to about 100 mJ.

10. The method according to claim 8, wherein the predetermined value is stored in memory of the laser system.

11. The method according to claim 8, wherein the predetermined value comprises a look-up table.

12. The method according to claim 8, wherein the step of providing the laser catheter comprises the steps of:

receiving the laser catheter within a sterile package; and

removing at least a portion of the connector from the sterile package.

13. The method according to claim 8, wherein the predetermined value is dependent on at least one of catheter type and medical procedure to be utilized by the laser catheter.

14. A method of calibrating a laser catheter with a laser system, comprising the steps of:

providing the laser catheter, wherein the laser catheter comprises a catheter body, a distal end, a proximal end, a connector, a housing having a first end and a second end, the first end is coupled to the connector and the second end is coupled to a proximal end of the catheter, and a fiber optic arranged between at least the proximal end and the distal end;

coupling the connector to the laser system;

securing the distal end of the catheter to a portion of the housing at a substantially fixed distance from a light detector disposed within the laser system, wherein the distal end of the catheter is optically aligned with the light detector;

providing calibration parameters comprising a calibration threshold value;

calibrating the catheter according to a calibration sequence, wherein the calibrating includes activating the laser system and receiving light emitted out of a distal end of the catheter at the detector and comparing detected light from the detector to the calibration threshold value; and

and stopping the calibration when the calibration threshold value has been detected.

15. The method according to claim 14, wherein the calibration parameters are stored in memory of the laser system.

16. The method according to claim 14, wherein the coupling the connector to the laser system step further comprises detecting the catheter type.

17. The method according to claim 14, wherein the calibration step comprises utilizing a look-up table of pre-entered parameters.

18. The method according to claim 14, wherein the calibration threshold is in a range from about 5 mJ to about 100 mJ.

19. The method according to claim 14, wherein the step of providing the laser catheter comprises the steps of:

receiving the laser catheter within a sterile package; and

removing at least a portion of the connector from the sterile package.

20. A method of calibrating a laser catheter, comprising the steps of:

removing a portion of the laser catheter from a sterile package, wherein the laser catheter comprises a catheter body, a distal end, a proximal end, a connector, a housing having a first end coupled to the connector and a second end coupled to a proximal end of the catheter, and a fiber optic material arranged between at least the proximal end and the distal end of the catheter;

coupling the connector to a laser system;

optically aligning the distal end of the catheter at a substantially fixed distance from a light detector disposed within the laser system;

activating the laser system to produce light pulses out of a distal end of the catheter;

receiving the light pulses at the light detector; and

comparing energy of the light pulses to a predetermined value and deactivating the laser when the predetermined value has been reached.

21. The method according to claim 20, wherein the distal end of the catheter is arranged in a channel region of the housing.

22. The method according to claim 20, wherein coupling the connector to the laser system step further comprises the step of detecting with the laser system a catheter type.

24. A method of calibrating a laser catheter, comprising the steps of:

removing a portion of the laser catheter from a sterile package, wherein the laser catheter comprises a catheter body, a distal end, a proximal end, a connector, a housing including channel region extending from a first end to a second end, the first end of the housing is coupled to the connector, a second end of the housing is coupled to a proximal end of the catheter, and the distal end of the catheter is coupled in at least a portion of the channel, and a fiber optic material is arranged between at least the proximal end and the distal end of the catheter;

coupling the connector to a laser system, wherein the distal end of the catheter is optically aligned with a detector; and

detecting with the laser system a catheter type of the laser catheter.