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1. WO2005030071 - SURGICAL RESECTION DEVICE

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[ EN ]

Claims

1. A surgical organ resection device comprising:
a plurality of elongate electrodes for insertion into organ tissue, the electrodes being capable of operating in a bipolar manner, and
an input for receiving a drive signal for driving the electrode, the elongate electrodes being arranged in a two-dimensional array.

2. A device according to claim 1 comprising two or more sets of elongate elements arranged in a two-dimensional array, with each set comprising two or more elongate electrodes electrically connected together.

3. A device according to claim 1 or 2 wherein the plurality of elongate electrodes are arranged in a two-dimensional array comprising a plurality of rows of elongate electrodes arranged in a generally linear formation.

4. A device according to claim 3 wherein, in use, an elongate electrode in a first row is of the same polarity as the adjacent elongate electrode in an adjacent row of the two-dimensional array.

5. A device according to any preceding claim wherein, in use, the polarity of one electrode is opposite to the polarity of an adjacent electrode in a given direction in the two-dimensional array.

6. A device according to any preceding claim wherein at least one of the elongate electrodes has a tissue-contact surface that has a surface energy of 40mN/m or less.

7. A device according to claim 6 wherein the elongate electrode has a coating of PTFE or titanium.

8. A device according to claim 6 wherein the elongate electrode has a highly polished surface.

9. A device according to any preceding claim further comprising means for cooling at least a portion of the elongate electrode using a gas.

10. A device according to claim 9 wherein the gas is air or nitrogen.

11. A device according to any preceding claim comprising a plurality of elongate electrodes arranged in a nxm array where n and m are integers greater than or equal to 2.

12. A device according to claim 11 wherein the m elongate electrodes comprise adjacent elongate electrodes of opposite polarity.

13. A device according to claim 11 or 12 wherein the n elongate electrodes comprise adjacent elongate electrodes of the same polarity.

14. A device according to claim 11, 12 or 13 comprising a plurality of elongate electrodes arranged in a nxm array where n is an integer greater than or equal to 2 and m is an integer greater than or equal to 3.

15. A device according to claim 11 comprising four elongate electrodes arranged in a 2x2 array.

16. A surgical organ resection device comprising: a plurality of elongate electrodes for insertion into organ tissue, the electrodes being capable of operating in a bipolar manner, and
an input for receiving a drive signal for driving the electrode, the device being arranged such that, in use, subsets of the elongate electrodes are driven in turn.

17. A device according to claim 16 wherein the elongate electrodes are arranged in a two-dimensional array.

18. A device according to claim 16 or 17 comprising a plurality of elongate electrodes arranged in a nxm array where n and m are integers greater than or equal to 2.

19. A device according to claim 18 wherein the m elongate electrodes comprise adjacent elongate electrodes of opposite polarity.

20. A device according to claim 18 or 19 wherein the n elongate electrodes comprise adjacent elongate electrodes of the same polarity.

21. A device according to claim 18, 19 or 20 comprising a plurality of elongate electrodes arranged in a nxm array where n is an integer greater than or equal to 2 and m is an integer greater than or equal to 3.

22. A device according to claim 21 wherein the subsets of elongate electrodes comprise nxp elongate electrodes, where p is an integer les than m.

23. A device according to any of claims 16 to 22 further comprising a switching mechanism for controlling the drive signal.

24. A method of performing surgical tissue resection comprising:
inserting into tissue a resection device comprising a plurality of elongate electrodes, the electrodes being capable of operating in a bipolar manner and the electrodes being arranged in a two-dimensional array, and
driving the electrodes with a drive signal.

25. A method of performing surgical tissue resection comprising:
inserting a surgical resection device comprising a plurality of elongate electrodes, the electrodes being capable of operating in a bipolar manner, and driving the electrodes with a drive signal, the device being arranged such that, in use, subsets of the elongate electrodes are driven in turn.