Irreversible electroporation using tissue vasculature to treat aberrant cell masses or create tissue scaffolds
First Claim
1. A method of ablating target tissue cells comprising:
- inserting a first device with a first electrode into an artery such that the first electrode is in contact with fluid inside the artery;
inserting a second device with a second electrode into a vein such that the second electrode is in contact with fluid inside the vein;
andapplying electrical energy between the first electrode and the second electrode so as to deliver ablation energy to target tissue cells using the fluid inside the artery and the fluid inside the vein as an electrical conduit.
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Abstract
The present invention relates to the field of medical treatment of diseases and disorders, as well as the field of biomedical engineering. Embodiments of the invention relate to the delivery of Irreversible Electroporation (IRE) through the vasculature of organs to treat tumors embedded deep within the tissue or organ, or to decellularize organs to produce a scaffold from existing animal tissue with the existing vasculature intact. In particular, methods of administering non-thermal irreversible electroporation (IRE) in vivo are provided for the treatment of tumors located in vascularized tissues and organs. Embodiments of the invention further provide scaffolds and tissues from natural sources created using IRE ex vivo to remove cellular debris, maximize recellularization potential, and minimize foreign body immune response. The engineered tissues can be used in methods of treating subjects, such as those in need of tissue replacement or augmentation.
793 Citations
31 Claims
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1. A method of ablating target tissue cells comprising:
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inserting a first device with a first electrode into an artery such that the first electrode is in contact with fluid inside the artery; inserting a second device with a second electrode into a vein such that the second electrode is in contact with fluid inside the vein; and applying electrical energy between the first electrode and the second electrode so as to deliver ablation energy to target tissue cells using the fluid inside the artery and the fluid inside the vein as an electrical conduit. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method of ablating target tissue cells by irreversible electroporation (IRE) comprising:
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inserting a first device with a first electrode into an artery associated with the target tissue cells such that the first device is disposed in the artery and the first electrode is in contact with fluid inside the artery; inserting a second device with a second electrode into a vein associated with the target tissue cells such that the second device is disposed in the vein and the second electrode is in contact with fluid inside the vein; and applying a plurality of electrical pulses between the first electrode of the first device disposed in the artery and the second electrode of the second device disposed in the vein so as to deliver ablation energy to the target tissue cells using the fluid inside the artery and the fluid inside the vein as an electrical conduit, the plurality of electrical pulses being sufficient to ablate the target tissue cells by IRE. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
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28. A method of ablating target tissue cells comprising:
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inserting a first device with a first electrode into an artery and a second device with a second electrode into a vein; administering fluid into the artery and vein in a manner such that the first and second electrodes are in contact with the fluid; and applying electrical energy between the first electrode and the second electrode so as to deliver ablation energy to target tissue cells using the fluid as an electrical conduit. - View Dependent Claims (29, 30, 31)
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Specification