초록 ▼

Methods and devices for occluding a vessel during a percutaneous ablation procedure. An elongated access device having a lumen and a tissue piercing, open distal end in communication with the lumen is used to percutaneously access a vessel that supplied blood to the tissue to be treated. An elongate

Methods and devices for occluding a vessel during a percutaneous ablation procedure. An elongated access device having a lumen and a tissue piercing, open distal end in communication with the lumen is used to percutaneously access a vessel that supplied blood to the tissue to be treated. An elongated balloon deployment device is used to deliver a balloon into the interior of the vessel. The balloon is inflated, resulting in the occlusion of the vessel. The tissue to be treated is ablated. Because there is little or no blood to transfer the thermal energy away from the heated tissue, the ablation procedure is performed more efficiently. The balloon may be subsequently deflated allowing normal flow through the vessel to return.

대표청구항 ▼

1. A method for treating tissue of an organ, comprising:inserting a rigid elongated member through a wall of a blood vessel, wherein a distal end of the rigid member is disposed within a lumen of the vessel, and wherein the blood vessel and organ have different functions; expanding an occlusive devi

1. A method for treating tissue of an organ, comprising:inserting a rigid elongated member through a wall of a blood vessel, wherein a distal end of the rigid member is disposed within a lumen of the vessel, and wherein the blood vessel and organ have different functions; expanding an occlusive device associated with the distal end of the rigid member, such that fluid flow in the vessel lumen is at least partially obstructed, whereby blood flow to the tissue is reduced; and thermally treating the tissue with heat. 2. The method of claim 1, further comprising collapsing the occlusive device, wherein the fluid flow in the vessel becomes unobstructed.3. The method of claim 1, wherein fluid flow in the vessel lumen is completely obstructed.4. The method of claim 1, wherein the occlusive device is mounted to the distal end of the rigid member.5. The method of claim 1, wherein the rigid member comprises a device introduction lumen, the method further comprising introducing the occlusive device through the device introduction lumen into the vessel lumen.6. The method of claim 1, wherein the occlusive device is a balloon that is expanded by introducing a medium into the balloon.7. The method of claim 1, wherein the rigid member is introduced percutaneously into the vessel.8. The method of claim 1, wherein the vessel is a portal vein.9. The method of claim 1, wherein the tissue is a tumor.10. The method of claim 1, wherein the occlusion of the blood flow is performed locally.11. The method of claim 1, wherein the tissue is treated with another rigid elongated member.12. The method of claim 1, wherein blood flow is occluded at a vessel location distal to the distal end of the rigid member.13. A method for performing an ablation procedure on an organ, comprising:inserting a rigid elongated member through a wall of a blood vessel, wherein a distal end of the rigid member is disposed within a lumen of the blood vessel, and wherein the blood vessel and organ have different functions; expanding an occlusive device associated with the distal end of the rigid member, such that blood flow in the vessel lumen is at least partially obstructed, whereby blood flow to tissue of the organ is reduced; and ablating the tissue. 14. The method of claim 13, further comprising collapsing the occlusive device, such that blood flow in the vessel becomes unobstructed.15. The method of claim 14, wherein the occlusive device is intermittently collapsed between tissue ablations.16. The method of claim 13, wherein blood flow in the vessel lumen is completely obstructed.17. The method of claim 13, wherein the occlusive device is mounted to the distal end of the rigid member.18. The method of claim 13, wherein the rigid member comprises a device introduction lumen, the method further comprising introducing the occlusive device through the device introduction lumen into the vessel lumen.19. The method of claim 13, wherein the occlusive device is a balloon that is expanded by introducing a medium into the balloon.20. The method of claim 13, wherein the rigid member is introduced percutaneously into the blood vessel.21. The method of claim 13, wherein the tissue is a tumor.22. The method of claim 13, wherein the vessel is a portal vein.23. The method of claim 13, wherein the blood vessel supplies blood to the tissue.24. The method of claim 13, wherein the blood vessel is adjacent to the tissue.25. The method of claim 13, wherein the tissue is ablated using radiofrequency energy.26. The method of claim 13, wherein the tissue is ablated with another rigid elongated member.