Apparatus and method for accessing a sinus cavity
AssigneeEntellus Medical, Inc.
InventorsJohn R. Drontle, Anthony J. Hanson, Peter T. Keith
Life of this patent
Estimating the term…
Abstract
A system for accessing a sinus cavity of a subject includes an access tool configured to penetrate into the sinus cavity from a location external the subject. The system further includes an access sheath having a distal tubular portion, a lumen extending through the access sheath and the distal tubular portion and dimensioned to receive the access tool, the distal tubular portion comprising one or more cutting surfaces disposed about an external surface thereof. The one or more cutting surfaces may include a plurality of longitudinally oriented grooves for flutes disposed about the periphery of the distal tubular member.
Claims19
1-21. (canceled)
A system for accessing a sinus cavity of a subject comprising:
- an access tool having a sharpened distal tip configured to penetrate bone and mucosa into the sinus cavity from a location external the subject;
- and
- an access sheath having a distal tubular portion, a lumen extending through the distal tubular portion and dimensioned to receive the access tool, the distal tubular portion comprising one or more cutting surfaces disposed about an external surface thereof, wherein the one or more cutting surfaces include longitudinally oriented flutes or grooves.
An access sheath for providing access to a sinus cavity, the access sheath comprising a proximal hub and a distal tubular portion, a lumen extending through the access sheath from the proximal hub to the distal tubular portion and dimensioned to receive an access tool having a sharpened distal tip configured to penetrate bone and mucosa into the sinus cavity from an external location, the distal tubular portion comprising one or more cutting surfaces disposed about an external surface thereof, wherein the one or more cutting surfaces include longitudinally oriented flutes or grooves.
A method of accessing a sinus cavity in a subject comprising:
- forming an artificial passageway through bone tissue of the subject;
- placing an access sheath in the artificial passageway in a first orientation, the access sheath having a tubular portion, a lumen extending through the access sheath and tubular portion, the tubular portion comprising one or more cutting surfaces disposed about an external surface thereof;
- and
- re-orienting the access sheath in a second orientation, wherein the re-orienting comprises rotating the access sheath about a longitudinal axis and panning the access sheath in a direction substantially orthogonal to the longitudinal axis.
Dependencies are inferred from the claim text.