| Covidien Patent applications |
| Patent application number | Title | Published |
|---|
| 20100185208 | MECHANICAL PUMP FOR REMOVAL OF FRAGMENTED MATTER AND METHODS OF MANUFACTURE AND USE - Material transport catheters and methods for their use rely on rotation of an impeller within a catheter body and a clearing element for preventing buildup of materials at the opening of the catheter body. The impeller preferably comprises an inner tube or shaft having a helical rotor formed over an outer surface thereof. The clearing element may comprise a free end of a structure near the distal end of the catheter body for disrupting clot, wherein the free end of the structure extends into the distal opening of the catheter body to break up materials as the impeller is rotated. Alternatively, the clearing element may comprise a cutting member disposed at the distal opening of the catheter body. | 07-22-2010 |
| 20080275406 | FIXED TROCAR SEAL - A diameter reduction mechanism for a fixed seal trocar employing a movable reduction member pivotally connected with a housing. The housing is adapted to be mounted on a proximal end of a valve assembly of the trocar. The reduction member defines a hole aligned with a passageway defmed by the trocar. The hole defines an operable area less than an operable area defined by the passageway. The diameter reduction mechanism is configured for the ease of selectively employing the reduction member between a first position reducing the operable area of the passageway and a second position wherein the reduction member is clear of the passageway. The first position is configured to limit excessive off-axis and angular movements of small diameter surgical instruments and the second position is configured to accommodate an unrestricted use of large diameter surgical instruments in the passageway. | 11-06-2008 |
