Hollow stylet for infusion catheter systems, devices and methods
First Claim
Patent Images
1. A system comprising:
- a hollow tube, including a proximal end and a distal end and a lumen extending therebetween, wherein the hollow tube is shaped and sized to permit insertion into a lumen of a flexible tubular infusion catheter, and wherein the hollow tube is stiffer than the infusion catheter such that the hollow tube acts as a stylet for guiding the catheter through tissue to a target location.
3 Assignments
0 Petitions
Accused Products
Abstract
This document discusses, among other things, systems, devices, and methods that include a hollow-tube stylet shaped and sized for insertion into a flexible infusion catheter for use as a guiding stylet during insertion of the stylet and catheter toward a subject. Fluid is loaded into the hollow tube stylet, and released upon withdrawal of the stylet from the infusion catheter. This avoids air from occupying the infusion catheter upon withdrawal of the stylet, which could disturb the infusion of the agent.
72 Citations
21 Claims
-
1. A system comprising:
a hollow tube, including a proximal end and a distal end and a lumen extending therebetween, wherein the hollow tube is shaped and sized to permit insertion into a lumen of a flexible tubular infusion catheter, and wherein the hollow tube is stiffer than the infusion catheter such that the hollow tube acts as a stylet for guiding the catheter through tissue to a target location. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
-
16. A system comprising:
-
a flexible tubular infusion catheter including a proximal end and a distal end and a lumen extending therebetween, the lumen of the infusion catheter sized and shaped to permit insertion of the hollow tube therein;
a hollow tube, including a proximal end and a distal end and a lumen extending therebetween, wherein the hollow tube is shaped and sized to permit insertion into a lumen of the flexible tubular infusion catheter, and wherein the hollow tube is stiffer than the infusion catheter such that the hollow tube acts as a stylet for guiding the catheter through tissue to a target location; and
wherein at least a portion of an inner diameter of the flexible infusion catheter snugly seals to an outer diameter of the hollow tube to prevent air from passing therebetween as the hollow tube is withdrawn from the flexible infusion catheter. - View Dependent Claims (17)
-
-
18. A method comprising:
-
loading a hollow-tube stylet with fluid;
inserting the stylet into a lumen of a flexible infusion catheter to provide enough stiffening to the catheter to guide the catheter through living tissue toward a target;
directing the stylet and the catheter through tissue to the target; and
withdrawing the stylet from the catheter, in which the withdrawing includes releasing the fluid from the stylet into the lumen of the catheter to avoid air from occupying the lumen of the catheter upon withdrawal of the stylet. - View Dependent Claims (19, 20, 21)
-
Specification