US 12,582,799 B2Granted

Catheter assembly

AssigneeThe Cleveland Clinic Foundation

InventorMichael A. Vogelbaum

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Abstract

A catheter assembly comprises a catheter including a longitudinally extending wall with inner and outer surfaces. The inner surface of the wall defines a bore extending longitudinally through the catheter and at least partially defines a first lumen in the bore and a laterally adjacent second lumen in the bore. At least one of the first and second lumens communicates with an opening in the outer surface of the wall at a distal end of the catheter. An elongated separator includes a longitudinally extending surface that at least partially defines the second lumen. The longitudinally extending surface of the separator is disposed asymmetrically relative to the bore when viewed in cross-section taken transverse to the longitudinal extent of the separator adjacent to a distal end of the separator. At least a portion of the separator is movable relative to the bore and the inner surface of the catheter wall.

Claims3

Dependent claims

A catheter assembly comprising:

a catheter including a longitudinally extending wall with an inner surface and an outer surface, the inner surface of the wall when viewed in cross-section taken transverse to a longitudinal extent of the wall being configured as an asymmetric closed geometric figure surrounding and defining a bore extending longitudinally through the catheter, a first portion of the inner surface of the wall and the asymmetric closed geometric figure at least partially defining a first lumen in the bore, a second portion of the inner surface of the wall and the asymmetric closed geometric figure at least partially defining a second lumen in the bore, the second lumen being laterally adjacent the first lumen, at least one of the first lumen and the second lumen communicating with an opening in the outer surface of the wall adjacent a distal end of the catheter, and
a stylet with a longitudinally extending outer peripheral surface, a first portion of the outer peripheral surface of the stylet when viewed in cross-section taken transverse to the longitudinal extent of the outer peripheral surface closely conforming to the first portion of the inner surface of the wall and the closed geometric figure so that the stylet fits closely within the first lumen so as to occlude the first lumen when the stylet is received in the bore, a second portion of the outer peripheral surface of the stylet when viewed in cross-section taken transverse to the longitudinal extent of the outer peripheral surface being dissimilar to the second portion of the inner surface of the wall and the closed geometric figure so that the second portion of the outer peripheral surface of the stylet leaves open and partially defines the second lumen in the bore when the stylet is received in the bore.

A method for performing a medical procedure using a catheter assembly comprising a catheter including a longitudinally extending wall with an inner surface and an outer surface, the inner surface of the wall (a) defining a bore extending longitudinally through the catheter and (b) at least partially defining a first lumen in the bore and a laterally adjacent second lumen in the bore, at least one of the first lumen and the second lumen communicating with an opening in the outer surface of the wall adjacent a distal end of the catheter, the catheter assembly also comprising an elongated separator including a longitudinally extending surface that at least partially defines the second lumen, the longitudinally extending surface of the separator being disposed asymmetrically relative to the bore when viewed in cross-section taken transverse to a longitudinal extent of the separator adjacent to a distal end of the separator, at least a portion of the separator being movable relative to the bore and the inner surface of the wall of the catheter, the method comprising the steps of:

(a) placing a stylet in the bore of the catheter;
(b) disposing the catheter, together with the stylet placed in the bore of the catheter, in tissue of a patient so that a distal end of the catheter is positioned at a desired location in the tissue;
and
(c) after the distal end of the catheter is positioned at a desired location in the tissue, removing the stylet from the bore of the catheter and introducing a fluid containing a bioactive material into the second lumen of the catheter so that the fluid flows through at least the second lumen into the tissue.

1 more element

Dependencies are inferred from the claim text.

Facts

Application: 17/837,508Filed 10 Jun 2022 · division
Priority: 20 Apr 2016
Published: US 2022/0296851 A122 Sep 2022
Granted: 24 Mar 2026
Term ends: Not estimatedThe source records don’t support an estimate.

Classification6 codes

A61M 25/0026
By the form of the lumen, e.g. cross-section, variable diameter: multi-lumen catheters with stationary elements
A61M 25/0102
Introducing, guiding, advancing, emplacing or holding catheters: insertion or introduction using an inner stiffening member, e.g. stylet or push-rod
A61M 2025/0035
Multi-lumen catheters with stationary elements: characterized by a variable lumen cross-section by means of a resilient flexible septum or outer wall
A61M 2025/0037
Multi-lumen catheters with stationary elements: characterized by lumina being arranged side-by-side

Family

Application62/324,943Us provisional application · filed 20 Apr 2016
PCT/US2017/028530Parent of this division · filed 20 Apr 2017
US 2022/0296851 A1Pre-grant publication · published 22 Sep 2022
Application16/095,497Parent of this division
US 11,376,396 B2Parent of this division
US 2019/0126007 A1Published application
US 12,582,799 B2This patent

From the US filing history. Foreign family members aren’t listed.