Thrombectomy catheter device
AssigneeCovidien LP
InventorsArnaz Malhi, Jerry Brightbill, Stephen Evans, Tim Robinson, Daniel Hutton
Life of this patent
Estimating the term…
Abstract
A catheter includes an outer tubular body, a spiral member, and a disruptor. The outer tubular body defines a longitudinal axis and extends to a distal annular cutting edge. The outer tubular body defines a lumen having distal and proximal ends. The spiral member is supported within the outer tubular body and includes proximal and distal ends. The distal end of the spiral member is positionable distally beyond the cutting edge of the outer tubular body. The disruptor is supported within the outer tubular body proximally of the cutting edge of the outer tubular body.
Claims22
A catheter for removing occlusive material disposed within a vessel, the catheter comprising:
- an outer tubular body defining a longitudinal axis and extending to a distal annular cutting edge configured to cut occlusive material within a vessel, the outer tubular body defining a lumen therethrough, the lumen having a distal end portion and a proximal end portion;
- a spiral member supported within the outer tubular body, the spiral member being configured to engage the occlusive material disposed within the vessel and draw the occlusive material into the distal end portion of the lumen of the outer tubular body, the spiral member including a proximal end portion and a distal end portion, the distal end portion of the spiral member being positionable distally beyond the cutting edge of the outer tubular body;
- and
- a disruptor supported within the lumen of the outer tubular body, the disruptor being configured to break up the occlusive material drawn into the lumen of the outer tubular body and facilitate removal of the occlusive material from the distal end portion of the lumen of the outer tubular body, the disruptor being disposed within the outer tubular body proximally of the cutting edge of the outer tubular body.
A catheter, comprising:
- an outer tubular body defining a longitudinal axis and having a proximal end portion and a distal end portion;
- an internal cutting mechanism disposed within the outer tubular body, the internal cutting mechanism including a disruptor and a spiral member, the spiral member including a proximal end portion and a distal end portion, the proximal end portion of the spiral member being longitudinally aligned with the disruptor along the longitudinal axis of the outer tubular body, the distal end portion of the spiral member extending distally of the disruptor and the distal end portion of the outer tubular body, a distal end portion of the disruptor disposed proximally of the distal end portion of the outer tubular body, the spiral member being rotatable to engage occlusive material disposed within a vessel, the disruptor being configured to break up the occlusive material engaged with the spiral member and direct the occlusive material to an aspirating lumen defined within one of the outer tubular body and the internal cutting mechanism;
- and
- a vacuum source in fluid communication with the aspirating lumen to facilitate the aspiration of the occlusive material from the aspirating lumen.
A method for removing an obstruction within a vessel, comprising:
- advancing a catheter within a vessel adjacent an occlusive material within the vessel;
- securing the catheter relative to the occlusive material by advancing a spiral member of the catheter into the occlusive material;
- coring the occlusive material with a cutting edge of an outer tubular body of the catheter;
- breaking up the occlusive material with a disruptor disposed completely within the outer tubular body of the catheter;
- and
- displacing the occlusive material to a proximal end portion of the catheter.
Dependencies are inferred from the claim text.