Abstract: An x-ray tube comprises an envelope, an anode target rotatably mounted within the envelope, and a cathode and window assembly mounted within the envelope and spaced relative to the anode. The cathode and window assembly includes an electrically insulative ceramic base defining an x-ray transmissive window therethrough, a recess formed within the electrically insulative base adjacent to a peripheral portion of the x-ray transmissive window, a filamentary electrode received within the recess, first and second metalized conductive surfaces formed on a surface of the recess on opposite sides of the filamentary electrode and substantially electrically isolated relative to one another, a first terminal electrically connected to the first metalized conductive surface, a second terminal electrically connected to the second metalized conductive surface, and a high voltage cable receptacle located on a second side of the electrically insulative ceramic base.

Abstract: An x-ray tube comprises an envelope, an anode target rotatably mounted within the envelope, and a cathode mounted within the envelope and spaced relative to the anode. The cathode includes an electrically insulative base defining an x-ray transmissive window therethrough, a recess formed within the electrically insulative base adjacent to a peripheral portion of the x-ray transmissive window, a filamentary electrode received within the recess, a first metalized conductive surface formed on a surface of the recess on one side of the filamentary electrode, a second metalized conductive surface formed on a surface of the recess on an opposite side of the filamentary electrode relative to the first metalized conductive surface and substantially electrically isolated relative to the first metalized conductive surface, a first terminal electrically connected to the first metalized conductive surface, and a second terminal electrically connected to the second metalized conductive surface.

Abstract: An X-ray tube has a metal-ceramic envelope having rotatably mounted therein an anode disk, which may be axially translatable and provided with a peripheral rim surface wherein a focal track spiral groove (or multiple annular grooves) is disposed. The groove(s) include a focal spot(s) area spaced from an electron emitting cathode(s), which is associated with a beam-forming structure and an X-ray transparent window mounted within an insulating structure aligned with the focal spot area. The insulating structure incorporates a multiplicity of imbedded annular electrodes which control an accelerating electric field, and which are structurally and operationally integrated into a power-control assembly that provides the electrical power and control signals necessary for the functioning of the X-ray tube.

Abstract: An X-ray tube has a metal-ceramic envelope having rotatably mounted therein an anode disk, which may be axially translatable and provided with a peripheral rim surface wherein a focal track spiral groove (or multiple annular grooves) is disposed. The groove(s) include a focal spot(s) area spaced from an electron emitting cathode(s), which is associated with a beam-forming structure and an X-ray transparent window mounted within an insulating structure aligned with the focal spot area. The insulating structure incorporates a multiplicity of imbedded annular electrodes which control an accelerating electric field, and which are structurally and operationally integrated into a power-control assembly that provides the electrical power and control signals necessary for the functioning of the X-ray tube.

Abstract: Improved devices, systems, and methods for inhibiting hyperplasia in blood vessels provide controlled and safe cryotherapy treatment of a target portion within a body lumen of a patient. One embodiment of the cryotherapy catheter comprises a catheter body having a proximal end and a distal end with a cooling fluid supply lumen and an exhaust lumen extending therebetween. A first balloon is disposed near the distal end of the catheter body in fluid communication with the supply and exhaust lumens. A second balloon is disposed over the first balloon with a barrier therebetween.

Abstract: Improved devices, systems, and methods for inhibiting hyperplasia in blood vessels provide controlled and safe cryotherapy treatment of a target portion within a body lumen of a patient. One embodiment of the cryotherapy catheter comprises a catheter body having a proximal end and a distal end with a cooling fluid supply lumen and an exhaust lumen extending therebetween. A first balloon is disposed near the distal end of the catheter body in fluid communication with the supply and exhaust lumens. A second balloon is disposed over the first balloon with a barrier therebetween.