IP Library › Granted Patent US 12,653,563
Granted Patent B2
US 12,653,563 · App. 18/586,246 · Granted Jun 16, 2026

Catheter apparatus and methods for endoluminal intervention

Inventor: Niall Behan (Dubendorf, CH)
Assignee: Julier Medical AG
A61B17/221A61B2017/00778A61B2017/00853A61B2017/00867A61B2017/22079A61B2017/2215
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Quick Facts
Patent No.
US 12,653,563
App. No.
18/586,246
Granted
Jun 16, 2026
Kind
B2
Abstract

An apparatus for neurovascular endoluminal intervention, in particular for the treatment of ischemic stroke, is provided. The apparatus comprises a catheter ( 2 ) for insertion into the circulatory system (CS) of a patient, in order to aspirate one or several clots (C) present in the circulatory system (CS). A distal outer section ( 22 ) of the catheter ( 2 ) comprises an unexpanded state, in which the diameter (D 2 ) of the distal outer section ( 22 ) is smaller than the diameter (D 1 ) of a proximal outer section ( 21 ) of the catheter ( 2 ), in order to facilitate navigation of the catheter through the circulatory system, and a radially expanded state, in order to facilitate aspiration of the one or several clots (C) through the catheter ( 2 ). Furthermore, a method for applying such an apparatus is provided.

Claims (38)

1 . A method for endoluminal intervention at a target site in a patient's vasculature, the method comprising:

pushing a distal braided section of an outer catheter tube having a proximal section, via an inner push tube extending through the proximal section and the distal braided section, to extend the distal braided section to stretch longitudinally and contract radially to an unexpanded state, wherein the inner push tube is coupled to the distal braided section via a spring element coupled to the distal braided section;

advancing the distal braided section in the unexpanded state to the target site while the inner push tube extends through the proximal section and the distal braided section; and

actuating the inner push tube to cause the distal braided section to transition from the unexpanded state to a radially expanded state at the target site in the patient's vasculature for performing the endoluminal intervention.

2 . The method of claim 1 , wherein actuating the inner push tube comprises pulling the inner push tube proximally to cause the distal braided section to transition from the unexpanded state to the radially expanded state.

3 . The method of claim 1 , further comprising, after causing the distal braided section to transition to the radially expanded state, removing the inner push tube from the outer catheter tube.

4 . The method of claim 1 , wherein performing the endoluminal intervention comprises removing one or more clots through the outer catheter tube while the distal braided section is in the radially expanded state.

5 . The method of claim 4 , wherein removing the one or more clots comprises aspirating the one or more clots while the distal braided section is in the radially expanded state.

6 . The method of claim 4 , further comprising, after removing the one or more clots, moving the distal braided section of the outer catheter tube to one or more additional clots in the patient's vasculature; and

removing the one or more additional clots through the outer catheter tube while the distal braided section is in the radially expanded state.

7 . The method of claim 4 , wherein removing the one or more clots comprises removing the one or more clots in the patient's neurovasculature to treat ischemic stroke.

8 . The method of claim 1 , wherein removing the one or more clots comprises advancing a clot-retriever through the outer catheter tube to engage with the one or more clots to remove the one or more clots via the clot-retriever.

9 . The method of claim 1 , wherein the spring element comprises a clip.

10 . The method of claim 1 , wherein the spring element comprises a semi-cylindrical structure.

11 . The method of claim 1 , wherein the spring element is coupled to a distal end of the distal braided section.

12 . The method of claim 1 , wherein the inner push tube is coupled to a distal end of the distal braided section via the spring element.

13 . The method of claim 1 , further comprising an inner elongated tube configured to be disposed within the outer catheter tube, the inner elongated tube longitudinally moveable relative to the distal braided section of the outer catheter tube.

14 . The method of claim 1 , wherein performing the intervention comprises advancing a device through the outer catheter tube to the target site.

15 . The method of claim 14 , wherein the device comprises a clot-retriever.

16 . The method of claim 1 , wherein, in the radially expanded state, the distal braided section's diameter is the same or less than the proximal section's diameter.

17 . The method of claim 1 , wherein the distal braided section comprises a coating.

18 . The method of claim 1 , wherein the coating comprises a lubricious coating on an outer surface on the distal braided section.

19 . The method of claim 1 , wherein the distal braided section comprises nitinol.

20 . The method of claim 19 , wherein the distal braided section comprises an outer hull having a radial elasticity.

21 . The method of claim 20 , wherein the outer hull comprises a polymer.

22 . The method of claim 1 , further comprising a PTFE coating.

23 . A method for endoluminal intervention to remove one or more clots in a patient's vasculature, the method comprising:

pushing a distal braided section of an outer catheter tube having a proximal section, via an inner push tube extending through the proximal section and the distal braided section, to extend the distal braided section to stretch longitudinally and contract radially to an unexpanded state, wherein the inner push tube is coupled to the distal braided section via a spring element coupled to the distal braided section;

advancing the distal braided section in the unexpanded state to the one or more clots in the patient's vasculature while the inner push tube extends through the proximal section and the distal braided section;

pulling the inner push tube proximally to cause the distal braided section to transition from the unexpanded state to a radially expanded state;

removing the inner push tube from the outer catheter tube; and

removing the one or more clots through the outer catheter tube while the distal braided section is in the radially expanded state.

24 . The method of claim 23 , wherein removing the one or more clots comprises aspirating the one or more clots while the distal braided section is in the radially expanded state.

25 . The method of claim 23 , further comprising, after removing the one or more clots, moving the distal braided section of the outer catheter tube to one or more additional clots in the patient's neurovasculature; and

removing the one or more additional clots through the outer catheter tube while the distal braided section is in the radially expanded state.

26 . The method of claim 23 , wherein removing the one or more clots comprises removing the one or more clots in the patient's neurovasculature to treat ischemic stroke.

27 . The method of claim 23 , wherein the inner push tube is coupled to a distal end of the distal braided section via the spring element.

28 . The method of claim 23 , wherein the spring element comprises a clip or a semi-cylindrical structure.

Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Oct 23, 2025
From: BEHAN, NIALL
To: MEDICAL STANDARD GMBH
Reel/Frame 072663/0273 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Oct 23, 2025
From: MEDICAL STANDARD GMBH
To: JULIER MEDICAL AG
Reel/Frame 073251/0290 →
Priority Claims (1)
EP 20154527 · Jan 30, 2020 · regional
Continuity (5)
Continuation 18465120 · Sep 11, 2023
Continuation 18131857 · Apr 6, 2023
Continuation 17812070 · Jul 12, 2022
Continuation PCTEP2021051903 · Jan 28, 2021
Related Publication 20240197348A1 · Jun 20, 2024
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