Back to results
US 2017/0246427 A1Published application
Catheter systems, kits, and methods for gaining access to a vessel
AssigneeBluegrass Vascular Technologies, Inc.
InventorJohn Gurley
Life of this patent
Estimating the term…
Abstract
Some of the present methods include, and some embodiments of the present systems are configured for gaining access to a patient's vessel by way of the vessel (i.e. from the inside out). Some embodiments facilitate gaining access to an occluded vessel, where part of the access path is through the occlusion.
Claims30
A method for providing access to a central venous system of a patient comprising:
- applying a radiopaque target having a radiopaque area and a radiolucent area to the skin of the patient so that the radiolucent area defines an exit area on the skin of the patient;
- introducing a catheter and a projection angle catheter into the patient in an area remote from the exit point, wherein the projection angle catheter is configured to extend out a side aperture of a distal tip of the catheter at a projection angle, and a needle wire is configured to extend through the projection angle catheter, wherein the catheter has a aperture at a distal end of the distal tip configured such that the needle wire can extend through the aperture;
- advancing the needle wire through the distal end aperture of the catheter to a desired location in the central venous system;
- advancing the catheter to position said distal tip in a desired tip location in the central venous system;
- viewing the catheter and said distal tip under fluoroscopy through the radiolucent area of the radiopaque target;
- rotating the catheter so that the side aperture and therefore the projection angle plane is aligned with the radiolucent area of the radiopaque target;
- adjusting the projection angle catheter so that the projection angle is aimed at the radiolucent area of the radiopaque target;
- and
- advancing the needle wire through the projection angle catheter, such that the distal end of the needle wire advances at an angle relative to the catheter and penetrates the skin of the patient adjacent the radiolucent area of the radiopaque target thereby providing a distal end of the needle wire exterior to the skin.
6 more elements
A method for providing access to a central venous system of a patient comprising:
- introducing a catheter into the patient, wherein the catheter has a projection angle catheter configured to extend out a side aperture of a distal tip of the catheter at a projection angle, and a needle wire configured to extend through the projection angle catheter, wherein the catheter has an aperture at a distal end of the distal tip configured such that the needle wire can extend through the aperture in a direction substantially parallel with a longitudinal axis of the catheter, wherein the projection angle is angled with respect to the longitudinal axis;
- advancing the needle wire through the distal end aperture of the catheter and into a vessel occlusion;
- advancing the catheter to position said distal tip in a desired tip location;
- retracting the needle wire into the catheter and the projection angle catheter;
- advancing the projection angle catheter so that the catheter extends through the side aperture;
- and
- advancing the needle wire through the projection angle catheter and through the skin of the patient, thereby providing a distal end of the needle wire exterior to the skin.
4 more elements
A catheter system comprising
- a first catheter comprising:
- a shaft comprising a proximal end and a distal end extending along a longitudinal axis and defining a lumen extending therebetween;
- a distal tip disposed at the distal end of the shaft and defining a lumen extending along a longitudinal axis and in fluid communication with the shaft lumen and comprising a distal end, wherein the distal tip comprises a side aperture in fluid communication with the shaft lumen and an aperture at the distal end in fluid communication with the shaft lumen;
- a second catheter having a portion configured to extend through the shaft lumen and the side aperture, the second catheter comprising a proximal end and a distal end and defining a lumen along a longitudinal axis between the proximal end and the distal end, wherein a portion of the second catheter is curved along the longitudinal axis and the curved portion is closer to the distal end than the proximal end, wherein the first catheter and the second catheter are configured such that the distal end of the second catheter passes through the side aperture of the first catheter when advanced through the first catheter;
- a needle wire configured to extend through the second catheter lumen and to extend through the distal end exit aperture of the first catheter in a direction substantially parallel with the longitudinal axis of the shaft, the needle wire having a sharp dissection tip, wherein the needle wire is configured such that it can penetrate a muscle tissue without deflection.
2 more elements
Dependencies are inferred from the claim text.