Catheter apparatus and methods for endoluminal intervention
AssigneeJulier Medical AG
InventorNiall Behan
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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 (D2) of the distal outer section (22) is smaller than the diameter (D1) 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.
Claims28
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.
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.
Dependencies are inferred from the claim text.