Arthroscopic devices and methods
AssigneeRELIGN Corporation
InventorsSteffan Benamou, Michael D. Walker, Aaron Germain
Life of this patent
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Abstract
An electrosurgical probe includes an elongated shaft assembly having a proximal end, a distal end, and a longitudinal axis. A distal housing is mounted on the distal end of the shaft and optionally includes a laterally open window where a plane of the window is generally perpendicular to the longitudinal axis of the shaft. An interior channel extends axially through the shaft and further through an interior of the housing to the window in the housing. An electrode member with a serrated or other elongated edge may extend longitudinally across the window and may be configured to reciprocate the elongated edge longitudinally relative to the window.
Claims22
-17. (canceled)
A surgical method of treatment, comprising:
- operating a medical system to treat tissue in a working space in a patient, the medical system comprising:
- a handpiece with a motor drive and a first sensor;
- a probe with a proximal hub and an elongated shaft assembly that extends about a longitudinal axis to a working end of the probe, the elongated shaft assembly including a first elongated member longitudinally received within a second elongated member, the proximal hub detachably coupled to the handpiece such that the motor drive is coupled to a rotating drive coupling in the proximal hub, the rotating drive coupling coupled to a proximal portion of the first elongated member and including a first magnet coupled thereto to rotate with the rotating drive coupling, wherein the first sensor in the handpiece is configured to sense rotation of the first magnet as the rotating drive coupling rotates for generating signals about the rotational position of the rotating drive coupling in the proximal hub, and wherein a distal portion of the first elongated member includes an electrode thereon and is actuatable to at least a first default position relative to the second elongated member at the working end of the probe;
- and
- a controller configured to receive signals from the first sensor about the rotational position of the rotating drive coupling in the proximal hub,
- wherein said operating comprises:
- applying a first electrical current to the electrode with the working end of the probe in the working space in the patient and with the distal portion of the first elongated member in the first default position, wherein, during said applying, the controller receives signals from the first sensor about the rotational position of the rotating drive coupling in the proximal hub, and while receiving said signals, repeatedly checks at a predetermined time interval of between 0.1 ms and 10 seconds to determine if the distal portion of the first elongated member has inadvertently migrated from the first default position.
Dependencies are inferred from the claim text.