US 12,653,991 B2Granted

Catheter systems and methods for medical procedures using catheters

AssigneeCerevasc, Inc.

InventorsAdel M. Malek, Carl Heilman

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Abstract

An intracranial intervention system comprises a seeker wire and delivery catheter used to navigate and access a target location within the intracranial subarachnoid spaces (ISAS) of a patient. A microcatheter is then advanced through the delivery catheter to perform a therapeutic procedure, such as installing a shunt within the ISAS to drain cerebral-spinal fluid (CSF). The shunt may be configured to drain CSF from a first and second ISAS, and includes a distal portion which extends into the first ISAS via the second ISAS and a dural venus sinus (DVS) of the patient. The shunt has a main body portion positioned and secured within the second ISAS, a distal portion extending into the first ISAS and the main body portion in the second ISAS have CSF intake opening which allow CSF to flow into a shunt lumen and out through an outflow opening positioned in the DVS.

Claims4

Dependent claims

A method for performing an endovascular third ventriculostomy, comprising:

navigating a delivery catheter through a vasculature of a patient until a distal end portion of the delivery catheter is disposed in a dural venous sinus (DVS) of the patient;
penetrating a wall between the DVS and a cerebrospinal fluid-filled intracranial subarachnoid space (ISAS) of the patient with the distal end portion of the delivery catheter, so that the distal end portion of the delivery catheter is disposed within the ISAS;
navigating a tool through a lumen of the delivery catheter until a distal end portion of the tool extends out an opening in the distal end portion of the delivery catheter within the ISAS, and toward a cerebrospinal fluid-filled third ventricle:
navigating the distal end portion of the tool through the ISAS toward a floor of a cerebrospinal fluid-filled third ventricle that separates the ISAS from the third ventricle;
and
penetrating the floor of the third ventricle with the distal end portion of the tool to thereby create an opening in the floor that allows cerebrospinal fluid to flow from the third ventricle into the ISAS.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application: 18/190,902Filed 27 Mar 2023 · continuation
Priority: 23 Oct 2020
Published: US 2023/0233819 A127 Jul 2023
Granted: 16 Jun 2026
Term ends: Not estimatedThe source records don’t support an estimate.

Classification18 codes

A61M 27/006
Implant devices for drainage of body fluids from one part of the body to another: cerebrospinal drainage; Accessories therefor, e.g. valves
A61B 17/320708
Atherectomy devices working by cutting or abrading; Similar devices specially adapted for non-vascular obstructions: curettes, e.g. hollow…
A61B 5/0084
Adapted for particular medical purposes: for introduction into the body, e.g. by catheters
A61B 8/12
Diagnosis using ultrasonic, sonic or infrasonic waves: in body cavities or body tracts, e.g. by using catheters

Family

Application63/104,771Us provisional application · filed 23 Oct 2020
Application63/246,760Us provisional application · filed 21 Sep 2021
Application63/254,737Us provisional application · filed 12 Oct 2021
PCT/US2021/056194Parent of this continuation · filed 22 Oct 2021
US 2023/0233819 A1Pre-grant publication · published 27 Jul 2023
US 12,653,991 B2This patent

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