Brian Connor - Newfields NH, US Joseph Sylvester - New Hampton NH, US Paul Modoono - Chelmsford MA, US Kevin Staid - Lowell MA, US David Reed - New Canaan CT, US
International Classification:
A61B017/20
US Classification:
606/159000, 604/022000
Abstract:
Surgical instruments are disclosed that utilize high-pressure liquid jets to perform a variety of useful functions. In certain embodiments, surgical instruments are described incorporating one or more liquid jets utilized to contact tissue excised by a non-liquid jet tissue-cutting component of the surgical instrument for the purpose of further cutting the excised tissue and/or fragmenting and/or disaggregating at least a portion of the excised tissue into a plurality of small particles and/or facilitating or assisting removal of excised tissue from a surgical site without the need to remove the instrument from the surgical site. In certain embodiments, a liquid jet of a surgical instrument can be utilized for the purpose of excising tissue of a patient immobilized and/or manipulated by the surgical instrument. Also described are surgical devices of the type characterized by curettes, rongeurs, bone punches, bone cutting forceps, morcellators, surgical micrograspers, with functionality and performance supplemented by the integration of a liquid jet. The liquid jet, in certain embodiments of such instruments, can be used, for example, as a cutting jet and/or as a power source for a rotary tissue-contacting device, such as a drill or burr abrader. In certain embodiments, the liquid jet provided in the inventive instruments can be used to bring about or speed up the piecewise removal of tissue, for example bone or a nucleus of a spinal disc, by converting at least a portion of a segment of tissue excised with the device into smaller particles in situ and removing them. In operations such as those on the spine, e.g. as in the repair of herniated discs, functionality provided by liquid jets of certain of the inventive instruments can facilitate excision of tissue and removal of the excised tissue from the surgical site while requiring less/no movement of the instrument to discharge debris from the operative site, thereby improving the speed and safety of operation and decreasing fatigue and workload for the surgeon. Also disclosed are methods of using certain liquid jet-containing surgical instruments for performing surgical procedures, for example surgical procedures on the spinal column of a patient.
Electrosurgical Devices And Methods Of Use Thereof
Jonathan J. BARRY - Stratham NH, US Roger D. GREELEY - Portsmouth NH, US Chad M. GREENLAW - Somersworth NH, US Lorenzo C. VACCARELLA - Newmarket NH, US Joseph SYLVESTER - Minneapolis MN, US
International Classification:
A61B 18/14
US Classification:
606 45
Abstract:
In some embodiments, an electrosurgical device includes a shaft, a first U-shaped electrode at a distal end of the shaft, and a second blade shaped electrode at the distal end of the shaft. The second electrode includes a spherical distal end. And the second electrode is substantially coplanar with the first electrode such that the first electrode surrounds a perimeter of the second electrode. The second electrode is spaced from the first electrode by an aperture. In some embodiments, an electrosurgical device includes a shaft, a first electrode at a distal end of the shaft defining an aperture and comprising a pointed tip, and a second electrode disposed at the distal end of the shaft that is substantially coplanar with the first electrode such that the first electrode surrounds a perimeter of the second electrode. The second electrode is spaced from the first electrode by the aperture.
- Minneapolis MN, US Jonathan J. Barry - Stratham NH, US Roger D. Greeley - Portsmouth NH, US Chad M. Greenlaw - Somersworth NH, US Lorenzo C. Vaccarella - Newmarket NH, US Joseph Sylvester - Minneapolis MN, US
Assignee:
Medtronic Advanced Energy LLC - Minneapolis MN
International Classification:
A61B 18/00 A61B 17/3203
US Classification:
606 41
Abstract:
A bipolar electrosurgical device is disclosed. The bipolar electrosurgical device includes a handle having a shaft and a distal end. The handle can be coupled to a source of electrical energy and a fluid source. A U-shaped first electrode extends distally in a plane from a pair of openings on the distal end of the shaft. The first electrode is in electrical communication with one of an active pole or a return pole of the source of electrical energy. A longitudinal second electrode extends distally from a middle opening on the distal end of the shaft. The second electrode is coplanar to the first electrode and electrically isolated from the first electrode. The second electrode is in electrical communication with the other of the active pole or the return pole of the source of electrical energy. The second electrode forms a lumen configured to be in fluid communication with the fluid source and a fluid opening for dispersing fluid.