Back to results
US 4,988,356 AGranted
Catheter and guidewire exchange system
AssigneeC. R. Bard, Inc.
InventorsJames F. Crittenden, Michael D. Barbere, Bryan J. White
Life of this patent
Estimating the term…
Abstract
A catheter and guidewire exchange system in which the guideware is contained within a guidewire leumen in the indwelling portion of the catheter and with the guidewire and catheter being separated externally of the patient. The catheter includes a guidewire lumen which is slit longitudinally along the length of the catheter. The guide member is carried by the catheter and serves to spread the slit of the lumen to guide the guidewire into or out of the slit guidewire lumen. The guide member may be advanced along the catheter and guidewire in zipper-like fashion so that the proximal ends of the guidewire and catheter will be separated while the distal portions will be merged.
Claims27
A catheter comprising:
- an elongate flexible shaft having proximal and distal ends and at least one longitudinally extending lumen open at the distal end of the shaft;
- a connector fitting mounted to the proximal end of the shaft;
- a single, linear longitudinally extending slit formed in the catheter shaft and extending from a location distal of but adjacent to said fitting along the catheter shaft and in communication with the lumen to enable transverse access to the lumen through the shaft, the slit extending along a major portion of the length of the catheter shaft.
A catheter comprising:
- an elongate flexible shaft having proximal and distal ends and at least one longitudinally extending lumen open at the distal end of the shaft;
- a connector fitting mounted to the proximal end of the shaft;
- a longitudinal slit formed in the catheter shaft from a location distal of but adjacent to the proximal fitting and extending in a distal direction along and in communication with the lumen to enable transverse access to the lumen through the shaft, the slit extending along a major portion of the length of the shaft;
- the slit having a distal terminal end proximal of the distal end of the shaft thereby defining an unslit distal segment of the shaft;
- and
- an encircling member mounted to the catheter shaft on the distal segment, the encircling member comprising a balloon, the catheter having a second lumen extending through the shaft for inflation and deflation of the balloon.
3 more elements
A catheter comprising:
- an elongate flexible shaft having proximal and distal ends and at least one longitudinally extending lumen open at the distal end of the catheter;
- a single, linear, longitudinally extending slit formed in the catheter shaft and extending along and in communication with the lumen to enable transverse axis to the lumen through the shaft;
- the slit having a distal terminal end proximal of the distal end of the catheter thereby defining an unslit distal segment of the catheter;
- means for guiding the guidewire transversely into and out of the lumen through the slit, said guiding means comprising:
- a guide member having separate means for receiving the guidewire and the catheter and means for merging the guidewire and the catheter by guiding the guidewire transversely through the slit in the catheter and into the guidewire lumen and for separating the guidewire and catheter by guiding the guidewire out of the lumen transversely through said slit.
2 more elements
A catheter comprising:
- an elongate flexible shaft having proximal and distal ends and at least one longitudinally extending lumen open at the distal end of the catheter;
- a single, linear longitudinally extending slit formed in the catheter shaft and extending along and in communication with the lumen to enable transverse access to the lumen through the shaft;
- a guide member mounted on the catheter and having a means for receiving a guidewire and means for merging the guidewire and the catheter by guiding the guidewire transversely through the slit in the catheter and into the guidewire lumen and for separating the guidewire and catheter by guiding the guidewire transversely out of the lumen through said slit;
- said guide member being constructed and arranged to effect such merging and separating in response to relative movement of the guide member to at least one of the guidewire or catheter, said guide member comprising:
- a body having a guide wire passageway extending therethrough and a catheter passageway which intersects the guidewire passageway, the catheter passageway and guidewire passageway merging into a common passageway.
2 more elements
A method for placing a catheter in a patient comprising:
- providing a catheter having an elongated flexible shaft with a proximal end and a distal end and at least one longitudinally extending lumen open at the distal end of the shaft, a connector fitting mounted to the proximal end of the shaft and a single, linear longitudinally extending slit formed in the catheter shaft and extending from a location distal of but adjacent to said fitting along the catheter shaft and in communication with the lumen to enable transverse access to the lumen through the shaft, the slit extending along a major portion of the length of the catheter shaft;
- placing a guidewire in the patient;
- advancing the catheter over the guidewire while urging the guidewire transversely into the lumen through the slit.
Dependencies are inferred from the claim text.