Back to results
US 7,018,390 B2Granted
Medical device introducer and obturator
AssigneeEdwards Lifesciences Corporation
InventorsRoman Turovskiy, Richard O. Murphy
Life of this patent
Estimating the term…
Abstract
An introducer having an elongate tubular member and a device connector releasably attached to a proximal end of the tubular member. The introducer allows exchange of medical instruments, such as a blood filter and cardioplegia catheter, through a single lumen. An obturator having a retractable blade for making incision on a tissue is insertable through the lumen of the introducer. Methods of using the obturator and the introducer for introducing medical device(s) into body cavity, such as a vessel or cardiac tissue, are also disclosed.
Claims8
An obturator comprising:
- an elongate tubular member having a proximal end and a distal end, the distal end having a slot which extends proximally;
- a blade mounted within the slot at the distal end of the elongate tubular member;
- and
- an actuating mechanism having a distal end connected to a proximal end of the blade, and a proximal end operable from the proximal end of the elongate tubular member, the actuating mechanism further comprising a force biasing element, a rotary element, a retaining element, and a release, wherein a force applied to the release slideably rotates the rotary element to disengage the release, causing the blade to advance beyond the slot and, when a force is applied distally to the release, slideably rotates the rotary element to engage the release, causing the blade to refract into the slot.
1 more element
An obturator comprising:
- an elongate tubular member having a proximal end and a distal end, the distal end having a slot which extends proximally;
- a blade mounted within the slot at the distal end of the elongate tubular member;
- and
- an actuating mechanism having a distal end connected to a proximal end of the blade, and a proximal end operable from the proximal end of the elongate tubular member, the actuating mechanism further comprising a force biasing element, a rotary element, a retaining element, and a release, wherein a force applied to the release slideably rotates the rotary element from a position in which the rotary element and the release are engaged to a position where the release is disengaged from the rotary element, causing the blade to advance beyond the slot and, when the force is again applied to the release, slideably rotates the rotary element to engage the release, causing the blade to retract into the slot.
1 more element
Dependencies are inferred from the claim text.