Catheter tip to reduce wire lock
AssigneeSciMed Life Systems, Inc.
InventorsGary Pederson, Tracee Eidenschink
Life of this patent
Estimating the term…
Abstract
An elongate medical device and methods for making and using the same. The elongate medical device may be a catheter that includes an elongate tubular shaft having a lumen defined therein. A scraping member is coupled to an inner wall surface of the shaft and extends into the lumen. The scraping member is configured to remove debris that may build up or otherwise be disposed on another medical device such a guidewire.
Claims28
A medical device, comprising:
- an elongate tubular member having a proximal portion, a distal portion, an inner wall surface, and a lumen defined along the inner wall surface;
- and
- a scraping member disposed along the inner wall surface adjacent the distal portion of the tubular member and extending into the lumen.
A catheter, comprising:
- a catheter shaft having a proximal portion, a distal tip portion, an inner wall surface, and a guidewire lumen defined along the inner wall surface;
- and
- a scraping member attached to the inner wall surface adjacent the distal tip and extending into the lumen of the catheter shaft.
A catheter and guidewire system designed for reducing guidewire lock, comprising:
- an elongate catheter shaft having a guidewire lumen;
- a guidewire slidably disposed in the guidewire lumen;
- and
- means for removing debris from the guidewire disposed within the guidewire lumen.
A catheter, comprising:
- an elongate catheter shaft having a guidewire lumen, the guidewire lumen having an inside diameter;
- a guidewire slidably disposed in the guidewire lumen, the guidewire having an outside diameter;
- a scraping member coupled to the guidewire lumen, the scraping member having an inside diameter;
- and
- wherein the inside diameter of the scraping member has a first tolerance with the outside diameter of the guidewire, wherein the inside diameter of the guidewire lumen has a second tolerance with the outside diameter of the guidewire, and wherein the first tolerance is tighter than the second tolerance.
A method for removing debris from a guidewire, comprising the steps of:
- providing a catheter shaft having a proximal portion, a distal tip portion, an inner wall surface, a guidewire lumen defined along the inner wall surface, and a scraping member attached to the inner wall surface adjacent the distal tip and extending into the lumen of the catheter shaft;
- advancing the catheter shaft over a guidewire;
- wherein debris is clumped on the guidewire;
- and
- bringing the scraping member into contact with the debris clumped on the guidewire so that the scraping member substantially removes the debris from the guidewire.
Dependencies are inferred from the claim text.