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James J. Frassica, Chelmsford US

James J. Frassica, Chelmsford, MA US

Patent application numberDescriptionPublished
20090005645Rotate-to- advance catheterization system - A method for visualizing the interior of a bodily passageway comprising: providing a visualization system for deployment in the bodily passageway, the visualization system comprising: a tube; visualization apparatus; and a helical thread on the exterior surface of the tube, such that when the tube is disposed in the bodily passageway so that the helical thread engages the interior side wall of the bodily passageway, rotation of the tube will induce a relative movement between the tube and the side wall of the bodily passageway; inserting the visualization system into the bodily passageway at a location remote from the site which is to be visualized; rotating the tube so as to draw the bodily passageway onto the tube in a pleating fashion, whereby to bring the site which is to be visualized toward the visualization apparatus; and using the visualization apparatus to visualize the interior of the bodily passageway.01-01-2009
20100069718ROTATE-TO-ADVANCE CATHETERIZATION SYSTEM - A method for visualizing the interior of a bodily passageway at a remote location, the method comprising the steps of: 03-18-2010
20100076264ROTATE-TO-ADVANCE CATHETERIZATION SYSTEM - A method for visualizing the interior of a bodily passageway comprising providing a system comprising a plurality of concentric telescoping shafts; visualization apparatus disposed within the telescoping shafts; and a helical thread disposed on the exterior of the telescoping shafts, the helical threads having a sufficient structural integrity and surface profile such that when the telescoping shafts are disposed in the passageway, rotation of the telescoping shafts induces a relative movement between the telescoping shafts and the passageway; wherein the telescoping shafts are configured to be selectively coupled together and de-coupled from one another; inserting the system into the passageway; rotating the telescoping shafts so as to draw the passageway onto the telescoping shafts in a pleating fashion; de-coupling the telescoping shafts; rotating the innermost telescoping shaft so as to draw the passageway onto the innermost telescoping shaft in a pleating fashion; and visualizing the interior of the passageway.03-25-2010
20100081879ROTATE-TO-ADVANCE CATHETERIZATION SYSTEM - A method for visualizing the interior of a bodily passageway at a remote location, the method comprising the steps of: 04-01-2010
20100228273LIQUID JET SURGICAL INSTRUMENT - The invention provides a variety of surgical instruments for forming a liquid jet, which are useful for performing a wide variety of surgical procedures. In some embodiments, the invention provides surgical liquid jet instruments having a pressure tube and an evacuation tube, where the pressure tube includes at least one nozzle for forming a liquid jet and where the evacuation tube includes a jet-receiving opening for receiving the liquid jet when the instrument is in operation. In some embodiments, the surgical liquid jet instrument is constructed to minimize damage to the tissue surrounding the tissue that is desired to be removed. In some embodiments, the outer surface of the distal tip of the evacuation tube wall and/or the pressure tube wall is blunted to minimize tissue damage. The invention also provides surgical methods utilizing the inventive surgical liquid jet instruments for cutting or ablating a selected tissue within portions of a patient's spine, such as within the intervertebral disc.09-09-2010
20110165548Anatomical model - An anatomical model comprising: 07-07-2011
20110178370Rotate to advance catheterization system - A system of rotate-to-advance medical devices including catheters, dilators, occluders, stents, suprapubic catheters and camera introducers configured with external screw threads and depending substantially on rotation for means of advancement and emplacement in mammalian genitourinary and gastrointestinal passages and organs.07-21-2011

Patent applications by James J. Frassica, Chelmsford, MA US