Vascular access system and method of use

Patent metadata

Field	Value
Publication number	US-2016015935-A1
Application number	US-201514798901-A
Country	US
Kind code	A1
Filing date	Jul 14, 2015
Priority date	Jul 15, 2014
Publication date	Jan 21, 2016
Grant date	—

Abstract

A vascular access system includes a catheter having an inner lumen in communication with an open distal end; a guidewire at least partially positioned in the catheter lumen and extending out the open distal end thereof, respective proximal and distal stops secured to the guidewire; and a centering device slidably mounted on the guidewire such that the centering device may freely within the catheter lumen relative to the guidewire between the proximal and distal stops, wherein the centering device substantially aligns a longitudinal axis of the catheter with a longitudinal axis of the guidewire proximate the centering device.

First claim

What is claimed is:

1 . A vascular access system, comprising:
a catheter having an inner lumen in communication with an open distal end of the catheter; an elongate flexible navigational member at least partially positioned in the catheter lumen, with a distal end portion of the navigational member extending out the open distal end of the catheter, the navigational member and catheter being movable relative to each other; a proximal stop secured to the navigational member at a first location; a distal stop secured to the navigational member at a second location distal of the first location; and a centering device slidably mounted on the navigational member between the proximal and distal stops so that the centering device may move freely relative to the navigational member between the proximal and distal stops, wherein the centering device substantially aligns a longitudinal axis of the catheter with a longitudinal axis of the navigational member proximate the centering device.

2 . The system of claim 1 , wherein the centering device is positioned within the catheter lumen.

3 . The system of claim 2 , the open distal end of the catheter being tapered or otherwise shaped so as to allow travel of the distal stop, but prevent travel of the centering device, respectively, there through.

4 . The system of claim 1 , the centering device having a proximal portion, distal portion and central lumen through which the navigational member extends, wherein the proximal portion has a cross-section larger than a cross-section of the distal portion.

5 . The system of claim 4 , wherein the respective proximal and distal portions have arcuate, atraumatic shapes.

6 . The system of claim 1 , the centering device comprising a proximal portion, middle portion, distal portion and central lumen through which the navigational member extends, wherein the middle portion has a cross-section that is larger than respective cross-sections of the proximal and distal portions.

7 . The system of claim 6 , wherein the respective proximal and distal portions have arcuate, atraumatic shapes.

8 . The system of claim 1 , wherein the centering device comprises an olive-like, football-like, prolate spheroid, ellipsoid, conical and/or elongate configuration.

9 . The system of claim 1 , wherein the centering device is made from a biocompatible polymer.

10 . The system of claim 1 , wherein the proximal and distal stops are made from a metal, metal alloy, polymer and/or metal-polymer composite.

11 . The system of claim 1 , wherein the proximal and distal stops are secured to the navigational member by an adhesive or thermal bonding.

12 . The system of claim 1 , wherein the navigational member comprises a guidewire.

13 . A vascular access system, comprising:
a catheter having an inner lumen in communication with an open distal end of the catheter; a guidewire at least partially positioned in the catheter lumen, with a distal end portion of the guidewire extending out the open distal end of the catheter, the guidewire and catheter being movable relative to each other; a proximal stop secured to the guidewire at a first location; a distal stop secured to the guidewire at a second location distal of the first location; and a centering device slidably mounted on the guidewire between the proximal and distal stops so that the centering device may move freely relative to the navigational member between the proximal and distal stops, wherein the centering device is positioned within the catheter lumen, the open distal end of the catheter being tapered or otherwise shaped so as to allow travel of the distal stop, but prevent travel of the centering device, respectively, there through, and wherein the centering device substantially aligns a longitudinal axis of the catheter with a longitudinal axis of the navigational member proximate the centering device.

14 . The system of claim 13 , the centering device having a proximal portion, distal portion and central lumen through which the navigational member extends, wherein the proximal portion has a cross-section larger than a cross-section of the distal portion.

15 . The system of claim 14 , wherein the respective proximal and distal portions have arcuate, atraumatic shapes.

16 . The system of claim 13 , the centering device comprising a proximal portion, middle portion, distal portion and central lumen through which the navigational member extends, wherein the middle portion has a cross-section that is larger than respective cross-sections of the proximal and distal portions.

17 . The system of claim 16 , wherein the respective proximal and distal portions have arcuate, atraumatic shapes.

18 . The system of claim 13 , wherein the centering device comprises an olive-like, football-like, prolate spheroid, ellipsoid, conical and/or elongate configuration.

19 . A method of accessing a vasculature using the vascular access system of claim 1 , comprising:
(a) advancing the navigational member relative to the distal end of the catheter until the centering device is at least partially disposed at an entrance of a target blood vessel; and (b) advancing the catheter relative to the navigational member until the open distal end of the catheter encloses the centering device.

20 . A method of accessing a vasculature using the vascular access system of claim 3 , comprising:
advancing the navigational member relative to the catheter until the centering device engages the distal end of the catheter; and advancing the navigational member and catheter jointly through the vasculature after engagement of the centering device with the distal end of the catheter.

Assignees

• Stryker Corp
• Stryker Europe Holdings I Llc

Inventors

• Chan Jason
• Chan Huey

Classifications

• A61M25/09 Primary

  Guide wires · CPC title

• A61M2025/09183

  having tools at the distal tip · CPC title

• A61M25/04

  in the body, e.g. expansible {(A61M25/10, A61M16/0488 take precedence)} · CPC title

• A61M25/0105 Primary

  Steering means as part of the catheter or advancing means; Markers for positioning (systems for detection of markers A61B) · CPC title

• A61M2025/09008

  having a balloon · CPC title