Abstract: An intravascular catheter for peri-vascular and/or peri-urethral tissue ablation includes multiple needles advanced through supported guide tubes which expand with open ends around a central axis to engage the interior surface of the wall of the renal artery or other vessel of a human body allowing the injection an ablative fluid for ablating tissue, and/or nerve fibers in the outer layer or deep to the outer layer of the vessel, or in prostatic tissue. The system also includes means to limit and/or adjust the depth of penetration of the ablative fluid into and beyond the tissue of the vessel wall. The preferred embodiment of the catheter includes structures which provide radial and lateral support to the guide tubes so that the guide tubes open uniformly and maintain their position against the interior surface of the vessel wall as the sharpened injection needles are advanced to penetrate into the vessel wall.

Abstract: An intravascular catheter for peri-vascular and/or peri-urethral tissue ablation includes multiple needles advanced through supported guide tubes which expand around a central axis to engage the interior surface of the wall of the renal artery or other vessel of a human body allowing the injection an ablative fluid for ablating tissue, and/or nerve fibers in the outer layer or deep to the outer layer of the vessel, or in prostatic tissue. The system may also include a means to limit and/or adjust the depth of penetration of the ablative fluid into and beyond the tissue of the vessel wall. The catheter may also include structures which provide radial and/or lateral support to the guide tubes so that the guide tubes expand uniformly and maintain their position against the interior surface of the vessel wall as the sharpened injection needles are advanced to penetrate into the vessel wall.

Abstract: A system and method for increasing address generation operations per cycle is described. In particular, a unified address generation scheduler queue (AGSQ) is a single queue structure which is accessed by first and second pickers in a picking cycle. Picking collisions are avoided by assigning a first set of entries to the first picker and a second set of entries to the second picker. The unified AGSQ uses a shifting, collapsing queue structure to shift other micro-operations into issued entries, which in turn collapses the queue and re-balances the unified AGSQ. A second level and delayed picker picks a third micro-operation that is ready for issue in the picking cycle. The third micro-operation is picked from the remaining entries across the first set of entries and the second set of entries. The third micro-operation issues in a next picking cycle.