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1. WO2011103096 - ABLATION DEVICE WITH GUIDE SLEEVES

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What is claimed is:

1 . An energy delivery device for treating a patient comprising:

a probe body;

a plurality of guide sleeves positioned inside the probe body and adapted to be deployed radially away from the probe body and into tissue of the patient; and

a plurality of elongate electrode elements each adapted to receive electrical treatment energy from an energy source and adapted to be deployed into the tissue through a

corresponding deployed guide sleeve.

2. The energy delivery device of claim 1 , wherein the plurality of guide sleeves are pre-curved guide sleeves wherein the extent of sleeve deployment determines the angle of deployment for the corresponding elongate electrode element relative to the longitudinal axis of the probe body and the extent of sleeve deployment is selectable by a user.

3. The energy delivery device of claim 2, wherein each pre-curved guide sleeve has a proximal curved portion and a distal straight portion.

4. The energy delivery device of claim 2, wherein each pre-curved guide sleeve is sufficiently curved to allow the corresponding elongate electrode element to be deployed at an angle greater than 90 degrees relative to the longitudinal axis of the probe body.

5. The energy delivery device of claim 1 , wherein each guide sleeve includes an electrode area adapted to deliver the electrical treatment energy to the tissue.

6. The energy delivery device of claim 1 , wherein a distal portion of the probe body includes an electrode area adapted to deliver the electrical treatment energy to the tissue.

7. The energy delivery device of claim 1 , wherein an area proximal to the location where the guide sleeves exit the probe body includes an electrode area adapted to deliver the electrical treatment energy to the tissue.

8. The energy delivery device of claim 1 , further comprising an introducer sheath through which the probe body is inserted and including an electrode area adapted to deliver the electrical treatment energy to the tissue.

9. The energy delivery device of claim 1 , further comprising:

a shaft disposed inside the probe body;

a probe tip attached to the shaft for movement between an open position in which a distal portion of the probe body is longitudinally spaced from a proximal portion of the probe tip, and a closed position in which the distal portion of the probe body slides over the proximal portion of the probe tip to provide structural strength during insertion of the probe body into the tissue.

10. An energy delivery device for treating a patient comprising:

a probe body;

a plurality of pre-curved guide sleeves positioned inside the probe body and adapted to be deployed radially away from the probe body and into tissue of the patient, the extent of sleeve deployment being selectable by a user; and

a plurality of elongate electrode elements each adapted to receive electrical treatment energy from an energy source and adapted to be deployed into the tissue through a

corresponding guide sleeve, wherein the extent of the sleeve deployment determines the angle of deployment for the corresponding elongate electrode element relative to the longitudinal axis of the probe body.

1 1 . The energy delivery device of claim 10, wherein the extent of deployment for each guide sleeve is independently controllable.

12. The energy delivery device of claim 10, wherein each pre-curved guide sleeve has a proximal curved portion and a distal straight portion.

13. The energy delivery device of claim 12, wherein each pre-curved guide sleeve has a semi-circular shape.

14. The energy delivery device of claim 10, wherein each pre-curved guide sleeve is sufficiently curved to allow the corresponding elongate electrode element to be deployed at an angle greater than 90 degrees relative to the longitudinal axis of the probe body.

15. The energy delivery device of claim 10, wherein each guide sleeve includes an electrode area adapted to deliver the electrical treatment energy to the tissue.

16. The energy delivery device of claim 10, wherein a distal portion of the probe body includes an electrode area adapted to deliver the electrical treatment energy to the tissue.

17. The energy delivery device of claim 10, wherein an area proximal to the location where the guide sleeves exit the probe body includes an electrode area adapted to deliver the electrical treatment energy to the tissue.

18. The energy delivery device of claim 10, further comprising an introducer sheath through which the probe body is inserted and including an electrode area adapted to deliver the electrical treatment energy to the tissue.

19. The energy delivery device of claim 10, wherein the introducer sheath includes a proximal electrical connector coupled to the electrode area and connectable to an electrical connection located on the probe body.

20. The energy delivery device of claim 10, further comprising:

a plurality of second elongate electrode elements positioned proximally of the plurality of elongate electrode elements and adapted to be deployed radially away from the probe body and into the tissue such that the deployed electrode elements longitudinally overlap with the deployed second electrode elements.

21 . The energy delivery device of claim 10, further comprising:

a plurality of second elongate electrode elements positioned proximally of the plurality of elongate electrode elements and adapted to be deployed distally and radially away from the probe body such that the deployed electrode elements longitudinally overlap with the deployed second electrode elements.

22. The energy delivery device of claim 10, further comprising:

a shaft disposed inside the probe body;

a probe tip attached to the shaft for movement between an open position in which a distal portion of the probe body is longitudinally spaced from a proximal portion of the probe tip, and a closed position in which the distal portion of the probe body slides over the proximal portion of the probe tip to provide structural strength during insertion of the probe body into the tissue.

23. An energy delivery device for treating a patient comprising:

a probe body;

a shaft disposed inside the probe body;

a probe tip attached to the shaft for movement between an open position in which a distal portion of the probe body is longitudinally spaced from a proximal portion of the probe tip, and a closed position in which the distal portion of the probe body slides over the proximal portion of the probe tip to provide structural strength during insertion of the probe body into the tissue.

24. The energy delivery device of claim 23, wherein the probe tip has a sharp distal end adapted to pierce tissue of the patient.

25. The energy delivery device of claim 23, wherein a distal portion of the probe tip includes an electrode area adapted to deliver the electrical treatment energy to the tissue.

26. The energy delivery device of claim 25, wherein the proximal portion of the probe tip in contact with the distal portion of the probe body in the closed position is electrically insulated.

27. The energy delivery device of claim 25, wherein the distal portion of the probe body includes an electrode area adapted to deliver the electrical treatment energy to the tissue.

28. The energy delivery device of claim 23, further comprising a plurality of guide sleeves each receiving a corresponding elongate electrode element and positioned inside the probe body, each guide sleeve adapted to be deployed radially away from the probe body and into the tissue of the patient to guide the deployment of the corresponding elongate electrode element into the tissue.

29. The energy delivery device of claim 23, further comprising a plurality of pre-curved guide sleeves positioned inside the probe body and adapted to be deployed radially away from the

probe body and into the tissue of the patient, the extent of sleeve deployment being selectable by a user, wherein:

each elongate electrode element is adapted to be deployed into the tissue through a corresponding guide sleeve; and

the extent of the sleeve deployment determines the angle of deployment for the corresponding elongate electrode element relative to the longitudinal axis of the probe body.

30. A method of treating a patient comprising:

inserting a probe body of an energy delivery device into tissue of the patient;

deploying a plurality of guide sleeves positioned inside the probe body radially away from the probe body and into the tissue;

deploying a plurality of elongate electrode elements through the deployed guide sleeves using the deployed guide sleeves as a guide; and

delivering electrical treatment energy to the tissue through the deployed electrodes.

31 . The method of claim 30, wherein the plurality of guide sleeves are pre-curved and the step of deploying the plurality of guide sleeves includes deploying the guide sleeves for a selected amount to establish the angle of deployment for the elongate electrode elements relative to the longitudinal axis of the probe body.

32. The method of claim 30, prior to the step of inserting a probe body, further comprising: inserting, into the tissue, an introducer sheath having an electrode area adapted to deliver the electrical treatment energy to the tissue.

33. The method of claim 32, wherein the introducer sheath includes a proximal electrical connector coupled to the electrode area and the method further comprises connecting the proximal electrical connector to an electrical connection located on the probe body.

34. The method of claim 30, wherein the energy delivery device includes:

a shaft disposed inside the probe body; and

a probe tip attached to the shaft for movement between an open position in which a distal portion of the probe body is longitudinally spaced from a proximal portion of the probe tip, and a closed position in which the distal portion of the probe body slides over the proximal portion of the probe tip, wherein:

the step of inserting a probe body includes:

inserting the probe body with the probe tip in the closed position;

moving the probe tip to the open position for deployment of the plurality of elongate electrode elements.

35. A method of treating a patient comprising:

providing an energy delivery device including:

a probe body;

a shaft disposed inside the probe body;

a plurality of elongate electrode elements positioned inside the probe body; and a probe tip attached to the shaft for movement between an open position in which a distal portion of the probe body is longitudinally spaced from a proximal portion of the probe tip, and a closed position in which the distal portion of the probe body slides over the proximal portion of the probe tip;

inserting the probe body into tissue of the patient with the probe tip in the closed position; moving the probe tip to the open position;

deployment the plurality of elongate electrode elements radially away from the probe body and into the tissue while the probe tip is in the open position; and

delivering electrical treatment energy to the tissue through the deployed electrode elements.

36. The method of claim 35, prior to the step of deploying the plurality of elongate electrode elements, further comprising deploying a plurality of guide sleeves positioned inside the probe body radially away from the probe body and into the tissue, wherein the plurality of elongate electrode elements are deployed through the deployed guide sleeves.

37. The method of claim 36, wherein the plurality of guide sleeves are pre-curved and the step of deploying a plurality of guide sleeves includes deploying the guide sleeves for a selected amount to establish the angle of deployment for the elongate electrode elements relative to the longitudinal axis of the probe body.

38. The method of claim 35, prior to the step of inserting a probe body, further comprising: inserting, into the tissue, an introducer sheath having an electrode area adapted to deliver the electrical treatment energy to the tissue.

39. The method of claim 38, wherein the introducer sheath includes a proximal electrical connector coupled to the electrode area and the method further comprises connecting the proximal electrical connector to an electrical connection located on the probe body.