1
Charles L Truwit, Haiying Liu: MR-compatible medical devices. Image Guided Drug Delivery System, Schwegman Lundberg Woessner & Kluth PA, October 12, 1999: US05964705 (171 worldwide citation)

The use of devices in procedures, especially medical procedures where the events take place under view of Magnetic Resonance Imaging (MRI) systems is becoming more important. Although some general and specific structures have been discussed in the literature and commercialized, little has been done ...


2
James G Skakoon, Robert Wharen, Matthew S Solar, Kari Parmer, Rudy A Mazzocchi, John David, Frank Murdock, David Hatcher, Thomas I Miller, Timothy Alan Parmer, Charles L Truwit: Deep organ access device and method. Image Guided Neurologics, Mayo Foundation for Medical Education and Research, Schwegman Lundberg Woessner & Kluth P A, June 26, 2007: US07235084 (159 worldwide citation)

Devices and methods provide accurate targeting, placement, and/or stabilization of an electrode or other instrument(s) into the brain or other body organ, such as to treat severe tremor or other neurological disorders. Targeting is performed using any form of image-guidance, including real-time MRI, ...


3
Charles L Truwit: Remote actuation of trajectory guide. Regents of the University of Minnesota, Schwegman Lundberg Woessner & Kluth P A, July 31, 2001: US06267770 (132 worldwide citation)

A surgical method and apparatus for accurately aligning the trajectory of, guiding of, and introducing or withdrawal of an instrument is disclosed. The apparatus includes a base which has a movable member movably attached to the base. The movable member has a passage therein which forms a portion of ...


4
Charles L Truwit, Randal Nelson: Method and apparatus for taking a biopsy. Regents of the University of Minnesota, Schwegman Lundberg Woessner & Kluth P A, August 10, 2004: US06773443 (116 worldwide citation)

There is described method and apparatus for taking a biopsy wherein the apparatus is formed of a biocompatible cylindrical member with an outer wall and a hollow core, the cylindrical member having a longitudinal axis. An opening in the outer wall of the member is provided and a cutting device cuts ...


5
Charles L Truwit: Remote actuation of trajectory guide. Regent of the University of Minnesota, Schwegman Lundberg Woessner & Kluth P A, June 22, 2004: US06752812 (109 worldwide citation)

A surgical method and apparatus for accurately aligning the trajectory of, guiding of, and introducing or withdrawal of an instrument is disclosed. The apparatus includes a base which has a movable member movably attached to the base. The movable member has a passage therein which forms a portion of ...


6
Charles L Truwit: Remote actuation of trajectory guide. Regents of the University of Minnesota, Schwegman Lundberg Woessner & Kluth P A, November 30, 1999: US05993463 (107 worldwide citation)

A surgical method and apparatus for accurately aligning the trajectory of, guiding of, and introducing or withdrawal of an instrument is disclosed. The apparatus includes a base which has a movable member movably attached to the base. The movable member has a passage therein which forms a portion of ...


7
Charles L Truwit: Trajectory guide method and apparatus for use in magnetic resonance and computerized tomographic scanners. Regents of the Universitiy of Minnesota, Schwegman Lundberg Woessner & Kluth P A, July 31, 2001: US06267769 (89 worldwide citation)

A surgical method and apparatus for accurately aligning the trajectory of, guiding of, and introducing or withdrawal of an instrument includes a base with a movable member. The base has a tubular shape. Positioned near the first end of the base is a seat. The seat is dimensioned to receive a movable ...


8
Charles L Truwit: Method and device for deflecting a probe. Regents of the University of Minnesota, Schwegman Lundberg Woessner & Kluth P A, October 14, 2003: US06632184 (81 worldwide citation)

A probe deflection device includes an outer tube and an inner tube. The outer tube is fabricated from an magnetic resonance (MR) compatible material. The inner tube is fabricated from a resilient material having a memory. The inner tube is shaped prior to insertion into the outer tube. To use the pr ...


9
Randy Nelson, Charles L Truwit: Implantable reservoir and system for delivery of a therapeutic agent. iSurgical, Schwegman Lundberg Woessner & Kluth P A, April 27, 2004: US06726678 (81 worldwide citation)

There is disclosed method and apparatus for retaining a reservoir for a therapeutic agent between the scalp and cranium of a subject, including providing a deformable pouch or rigid cylinder for dispensing the therapeutic agent from the reservoir to a location in the body of the subject. In one embo ...


10
Charles L Truwit: Remote actuation of trajectory guide. Regents of the University of Minnesota, Schwegman Lundberg Woessner & Kluth P A, March 27, 2001: US06206890 (73 worldwide citation)

A surgical method and apparatus for accurately aligning the trajectory of, guiding of, and introducing or withdrawal of an instrument is disclosed. The apparatus includes a base which has a movable member movably attached to the base. The movable member has a passage therein which forms a portion of ...