Reusable optical fiber connector adapter with plurality of optical barriers for all fiber delivery laser sources

• US 5,570,445 A
• Filed: 06/29/1995
• Issued: 10/29/1996
• Est. Priority Date: 06/22/1994
• Status: Expired due to Term

• Current Assignee: Xintec Corporation
• Original Assignee: Xintec Corporation
• Inventors: Chou, Marilyn M., Yu, Ken T., Yu, King J. J.
• Primary Examiner(s): Lee, John D.
• Application Number:
  US08/496,342
• Time in Patent Office: 488 Days
• Field of Search: 385/31, 385/38, 385/53, 385/60, 385/76-78, 385/86-88, 385/92, 385/117-119, 385/123, 385/125, 385/147, 385/902, 606/2, 606/10-12, 606/13, 606/16, 606/17
• US Class Current: 385/92
• CPC Class Codes: A61B 18/22 the beam being directed along or through a flexible conduit, e.g. an optical fibre; Couplings or hand-pieces therefor
• CPC Class Codes: A61B 2017/00477 Coupling A61B2017/0046 takes precedence
• CPC Class Codes: A61B 2017/00482 with a code
• CPC Class Codes: A61B 2018/00172 Connectors and adapters therefor
• CPC Class Codes: G02B 2006/4297 having protection means, e.g. protecting humans against accidental exposure to harmful laser radiation
• CPC Class Codes: G02B 6/381 of the ferrule type, e.g. fibre ends embedded in ferrules, connecting a pair of fibres
• CPC Class Codes: G02B 6/3825 with an intermediate part, e.g. adapter, receptacle, linking two plugs
• CPC Class Codes: G02B 6/4292 the light guide being disconnectable from the opto-electronic element, e.g. mutually self aligning arrangements
• CPC Class Codes: G02B 6/4296 coupling with sources of high radiant energy, e.g. high power lasers, high temperature light sources
• CPC Class Codes: Y10S 385/902 Nonbundle fiberscope devices

Abstract

A reusable connector adapter for coupling any fiber optic transmittable laser source to a fiber optic laser delivery device, the laser source having a laser energy output port. The adapter allows the use of a variety of different laser sources with a variety of different fiber optic laser delivery devices. The adapter maintains the fiber optic laser delivery device adjacent to the laser energy output port such that the laser energy to be transmitted is communicated efficiently to the fiber optic laser delivery device. The adapter further comprises a laser interlock deactivation means such that if a laser source has a mechanical, electrical or optical interlock system, the adapter will function to deactivate the interlock system. Furthermore, the adapter also comprises a plurality of optical barriers to prevent the unintended transmission of laser energy when, for example, the fiber optic laser delivery device has not been installed or has not been installed properly.

Claims

1. A reusable connector adapter for coupling any fiber optic transmittable laser source to a fiber optic laser delivery device, the laser source having an output port for transmitting laser energy, the fiber optic laser delivery device having a laser receiving end with a fiber connector at the laser receiving end, the fiber optic laser delivery device further having a fiber optic waveguide, the reusable connector adapter comprising:

a connector plug portion, the connector plug portion having a proximal end precisely shaped so as to couple efficiently with the laser source, the proximal end of the connector plug portion having a laser source attachment means such that the connector plug portion can be securely maintained adjacent to the output port of the laser source in an operative position, the connector plug portion further having a distal end, the connector plug portion further having a central hollow body portion intermediate the proximal end and the distal end for receiving and containing the fiber connector within the central hollow body portion in efficient optical communication with the laser source;

a fiber optic laser delivery device securing portion for removably maintaining and securing the fiber optic laser delivery device within the central hollow body portion of the connector plug portion;

a first optical barrier for preventing the laser energy from being transmitted; and

a second optical barrier for preventing the laser energy from being transmitted.

2. The invention of claim 1 wherein the laser source has a laser interlock for preventing the undesired transmission of laser energy unless and until such time as the interlock is deactivated and the connector plug portion of the reusable connector adapter further comprises a laser interlock deactivation means.

3. The invention of claim 2 wherein the laser interlock comprises a mechanical switch and wherein the laser interlock deactivation means of the reusable connector adapter can engage the mechanical switch such that the laser source interlock is deactivated.

4. The invention of claim 2 wherein the laser interlock requires an electrical signature generated by an electrical signature generating circuit for deactivation of the laser interlock and the laser interlock deactivation means of the reusable connector adapter further comprises an electrical signature generating circuit.

5. The invention of claim 2 wherein the laser interlock requires an optical signal or block for deactivation of the laser interlock and the laser interlock deactivation means of the reusable connector adapter further comprises an optical block or signal generating means.

6. The invention of claim 2 wherein the laser interlock system requires a mechanical, electrical or optical contact between the proximal end of the connector plug portion and the output port of the laser source for deactivation, and the laser interlock deactivation means comprises a contacting element.

7. The invention of claim 6 wherein the contacting element is retractable.

8. The invention of claim 7 wherein the retractable contacting element is in a retracted position in the absence of the fiber optic laser delivery device and in an extended position when the fiber connector of the fiber optic laser delivery device is received within the connector plug portion, whereby when the retractable element is extended, the contacting element is in electrical, mechanical or optical contact with the output port of the laser source.

9. The invention of claim 2 wherein the laser interlock comprises an optical switch and wherein the laser interlock deactivation means of the reusable connector adapter supplies an optical signal such that the laser source interlock is deactivated.

10. The invention of claim 1 wherein the first and second optical barriers prevent the laser energy from being transmitted unless a fiber optic laser delivery device is properly installed within the reusable connector adapter.

11. The invention of claim 10 wherein the first and second optical barriers are comprised of an optically opaque material.

12. The invention of claim 10 wherein the first and second optical barriers are mounted within the central hollow body portion of the connector plug portion such that upon insertion of the fiber optic laser delivery device into the reusable connector adapter, the optical barriers are removed from the path of transmission of laser energy.

13. The invention of claim 10 wherein the second optical barrier is disposed between the first optical barrier and the distal end of the connector plug portion.

14. The invention of claim 10 wherein the first optical barrier is adjacent the proximal end of the connector plug portion.

15. The invention of claim 10 wherein the second optical barrier is adjacent the fiber optic laser delivery device securing portion of the reusable connector adapter.

16. The invention of claim 10 wherein the first and second optical barriers are pivotally mounted on spring members.

17. The invention of claim 1 wherein the fiber optic laser delivery device securing portion comprises an engagement means for coupling the fiber optic laser delivery device securing portion to the connector plug portion, thereby maintaining the fiber optic laser delivery device within the central hollow body portion.

18. The invention of claim 17 wherein the engagement means comprises a biasing element for maintaining the fiber optic laser delivery device within the central hollow body portion biased between the connector plug portion and the fiber optic laser delivery device securing portion.

19. The invention of claim 1 wherein the fiber connector on the fiber optic laser delivery device is an SMA type connector.

20. The invention of claim 1 wherein the fiber connector on the fiber optic laser delivery device is an EZ Connector.

21. The invention of claim 1 further comprises a plurality of additional optical barriers for preventing the laser energy from being transmitted.

22. The invention of claim 1 wherein the laser source has a recessed output port for transmitting laser energy and extending from the proximal end of the connector plug portion there is a predetermined length of optical fiber, the predetermined length of optical fiber having a proximal end for aligning the fiber with and maintaining the fiber adjacent to the output port.

23. The invention of claim 22 further comprising a sheath covering the predetermined length of optical fiber.

24. The invention of claim 22 further comprising a tip portion on the proximal end of the predetermined length of optical fiber to align the predetermined length of optical fiber with and maintain the proximal end of the predetermined length of optical fiber adjacent to the output port of the laser source.