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1. WO2006096474 - PERCUTANEOUS ARRAY DELIVERY SYSTEM

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[ EN ]

CLAIMS

1. A system for treating tissue, comprising:
a cannula having a proximal end, a distal end, and a lumen extending between the proximal and the distal ends; and
an array of delivery tubes at least partially disposed in the cannula lumen, wherein each of the delivery tubes is slidable relative to the cannula, and has a first configuration when constrained inside the cannula lumen and a second configuration when disposed outside of the cannula lumen.

2. The system of claim 1 , wherein the delivery tubes are disposed in a substantially evenly spaced circumferential arrangement in the cannula lumen.

3. The system of claims 1 or 2, further comprising a plunger in operative association with the array of delivery tubes.

4. The system of claim 3, wherein the plunger has a plurality of portions, each slidably disposed in a lumen of a respective delivery tube.

5. The system of any of claims 1 - 4, further comprising a respective treatment particle disposed in a lumen of each of one or more of the delivery tubes.

6. The system of claim 5, wherein the respective treatment particles are radioactive.

7. The system of claim 5, wherein the respective treatment particles comprise a bioactive agent.

8. The system of claim 5, wherein the respective treatment particles comprise an agent for treating tissue.

9. The system of any of claims 1 - 8, further comprising an indexing device for controlling a position of the distal end of the cannula relative to a target tissue region.

10. The system of claim 9, the indexing device having a tubular portion for receiving the cannula.

11. The system of claim 10, wherein the tubular portion comprises a plurality of slots in the wall of the tubular portion, the plurality of slots having different lengths.

12. The system of claim 9, wherein the cannula has an extension, and the indexing device has a plurality of slots of different lengths located in the wall of the tubular portion, each of the plurality of slots sized to accommodate the extension.

13. The system of claim 9, wherein one of the indexing device and cannula has an extension, and the other of the indexing device and cannula has a slot for mating with the extension.

14. The system of claim 9, wherein the indexing device further comprises a disk secured to the tubular portion.

15. The system of any of claims 1 - 14, wherein the cannula comprises a needle.