Single-use lens assembly

• US 7,848,035 B2
• Filed: 09/18/2008
• Issued: 12/07/2010
• Est. Priority Date: 09/18/2008
• Status: Active Grant

• Current Assignee: Pthera,Llc
• Original Assignee: PhotoThera, Inc.
• Inventors: Hill, Theodore B., Bradley, Scott, DeLapp, Scott, Sorich, Rick
• Primary Examiner(s): Hasan; Mohammed
• Application Number:
  US12/233,498
• Publication Number:
  US 20100067128A1
• Time in Patent Office: 810 Days
• Field of Search: 359694-700, 359819-823, 359/892
• US Class Current: 359/820
• CPC Class Codes: A61B 18/18 by applying electromagnetic radiation, e.g. microwaves radiation therapy A61N5/00
• CPC Class Codes: A61B 2090/0814 Preventing re-use
• CPC Class Codes: A61N 2005/0644 Handheld applicators
• CPC Class Codes: A61N 5/06 using light

Abstract

An optical assembly includes an output optical element having a thermally conductive and optically transmissive material and a thermal conduit in thermal communication with the output optical element and having at least one surface configured to be in thermal communication with at least one heat dissipating surface of a light delivery apparatus. The optical assembly further includes a coupling portion configured to be placed in at least two states. In a first state, the coupling portion is attached to the apparatus such that the at least one surface of the thermal conduit is in thermal communication with the at least one heat dissipating surface. In a second state, the coupling portion is detached from the apparatus after having been attached to the apparatus in the first state and in which the coupling portion is configured to prevent re-attachment of the coupling portion to the apparatus.

Claims

1. An optical assembly releasably mountable to a light delivery apparatus comprising at least one heat dissipating surface, the optical assembly comprising:

an output optical element comprising a thermally conductive and optically transmissive material;

a thermal conduit in thermal communication with the output optical element and comprising at least one surface configured to be in thermal communication with the at least one heat dissipating surface; and

a coupling portion configured to be placed in at least two states comprising;

a first state in which the coupling portion is attached to the light delivery apparatus such that the at least one surface of the thermal conduit is in thermal communication with the at least one heat dissipating surface of the light delivery apparatus; and

a second state in which the coupling portion is detached from the light delivery apparatus after having been attached to the light delivery apparatus in the first state and in which the coupling portion is configured to prevent re-attachment of the coupling portion to the light delivery apparatus.

2. The optical assembly of claim 1, wherein the at least two states further comprise a third state in which the coupling portion is unattached to the light delivery apparatus and is configured to be attached to the light delivery apparatus prior to the first state.

3. The optical assembly of claim 1, wherein the output optical element comprises sapphire.

4. The optical assembly of claim 1, wherein the thermal conduit comprises an elongate tube having a first end portion in thermal communication with the output optical element and a second end portion comprising the at least one surface.

5. The optical assembly of claim 4, wherein the second end portion comprises one or more portions configured to fit with one or more portions of the at least one heat dissipating surface.

6. The optical assembly of claim 5, wherein the one or more portions of the second end portion comprise one or more protrusions and the one or more portions of the at least one heat dissipating surface comprise one or more recesses.

7. The optical assembly of claim 1, wherein the thermal conduit comprises a hole through which light from the light delivery apparatus propagates to the output optical element.

8. The optical assembly of claim 1, wherein the thermal conduit comprises at least one of aluminum, nickel, and zinc.

9. The optical assembly of claim 1, wherein the thermal conduit is electrically coupled to an electrical ground when the coupling portion is in the first state.

10. The optical assembly of claim 1, wherein the coupling portion comprises one or more protrusions configured to fit with one or more recesses of the light delivery apparatus.

11. The optical assembly of claim 1, wherein the coupling portion comprises one or more recesses configured to fit with one or more protrusions of the light delivery apparatus.

12. The optical assembly of claim 1, further comprising an adapter comprising one or more first portions configured to fit with one or more portions of the light delivery apparatus, the adapter further comprising one or more second portions configured to fit with one or more portions of the thermal conduit.

13. The optical assembly of claim 12, wherein the adapter provide thermal conductivity between the at least one heat dissipating surface and the thermal conduit.

14. The optical assembly of claim 12, wherein the one or more first portions comprise one or more protrusions configured to fit with one or more recesses of the light delivery apparatus.

15. The optical assembly of claim 12, wherein the one or more first portions comprise one or more recesses configured to fit with one or more protrusions of the light delivery apparatus.

16. The optical assembly of claim 12, wherein the one or more second portions comprise one or more protrusions configured to fit with one or more recesses of the thermal conduit.

17. The optical assembly of claim 12, wherein the one or more second portions comprise one or more recesses configured to fit with one or more protrusions of the thermal conduit.

18. The optical assembly of claim 1, wherein the coupling portion comprises an indicator configured to indicate a current state of the coupling portion.

19. The optical assembly of claim 1, wherein the coupling portion comprises a mechanism which allows rotation of the coupling portion in a first direction to place the coupling assembly in the first state and which allows rotation of the coupling portion in a second direction opposite to the first direction to remove the coupling assembly from the first state, the mechanism configured to inhibit rotation of the coupling portion in the first direction upon the coupling portion being removed from the first state.

20. The optical assembly of claim 19, wherein the mechanism comprises:

a first element comprising;

a first plurality of protrusions positioned along a first circle; and

a second plurality of protrusions positioned along a second circle substantially concentric with the first circle;

a second element comprising;

a first side and a second side opposite to the first side;

a third plurality of protrusions on the first side and configured to mate with the first plurality of protrusions; and

a fourth plurality of protrusions on the second side; and

a third element comprising;

a fifth plurality of protrusions configured to mate with the second plurality of protrusions; and

a sixth plurality of protrusions configured to mate with the fourth plurality of protrusions.

21. The optical assembly of claim 20, wherein the third element is disengaged from the first element before the coupling portion is in the first state and the third element is engaged with the first element when the coupling portion is in the second state.

22. The optical assembly of claim 20, wherein the second element is between the first element and the third element.

23. A light delivery apparatus having at least one heat dissipating surface, the light delivery apparatus comprising:

a mounting portion; and

an optical assembly comprising;

an optical element comprising a thermally conductive and optically transmissive material;

a thermal conduit in thermal communication with the optical element and comprising at least one surface configured to be in thermal communication with the at least one heat dissipating surface; and

a coupling portion configured to releasably mount to the mounting portion such that the at least one surface of the thermal conduit is in thermal communication with the at least one heat dissipating surface by rotating relative to and engaging a corresponding portion of the light delivery apparatus without the at least one surface of the thermal conduit rotating relative to the at least one heat dissipating surface.

24. A method of releasably mounting an optical assembly to a light delivery apparatus comprising at least one heat dissipating surface, the method comprising:

providing an optical assembly comprising a thermal conduit with at least one surface adapted to be placed in thermal communication with the at least one heat dissipating surface of the light delivery apparatus, the optical assembly adapted to be in at least two states comprising;

a first state in which the optical assembly is attached to the light delivery apparatus; and

a second state in which the optical assembly is detached from the light delivery apparatus after having been attached to the light delivery apparatus in the first state and in which the optical assembly is configured to prevent re-attachment of the optical assembly to the light delivery apparatus, wherein the light delivery apparatus comprises a mounting portion and the optical assembly comprises a coupling portion;

attaching the optical assembly to the light delivery apparatus, wherein attaching the optical assembly to the light delivery apparatus comprises rotating the coupling portion relative to the mounting portion without the at least one surface of the thermal conduit rotating relative to the at least one heat dissipating surface; and

detaching the optical assembly from the light delivery apparatus.

25. The method of claim 24, wherein attaching the optical assembly to the light delivery apparatus places the optical assembly in the first state and detaching the optical assembly from the light delivery apparatus places the optical assembly in the second state.

26. The method of claim 24, wherein detaching the optical assembly from the light delivery apparatus comprises avoiding placing the optical assembly in the second state.