US 2023/0414235 A1Published application

Actuated expandable mouth thrombectomy catheter

AssigneeNeuravi Limited

InventorsBrendan CASEY, Karl KEATING, Ronald KELLY, David VALE

Life of this patent

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Abstract

A clot retrieval catheter can have an expansile distal tip for flow restriction/arrest and improved aspiration efficiency and a large, distal facing mouth into which clots or other obstructions can be retrieved. The tip can be formed from a distal ring of leaflets or hoops. One or more pull cables can be retracted to actuate and radially expand the expansile distal tip. The clot retrieval catheter can have a catheter shaft with flexibility-adding features proximal of the tip. The catheter shaft can be a multi-lumen configuration with a large catheter lumen for passing auxiliary devices and directing aspiration and one or more guide lumens which can route the pull cables to the leaflets or hoops of the expansile tip. A flexible, low-modulus membrane can be disposed around at least a portion of the expansile tip and catheter shaft.

Claims20

Dependent claims

A thrombectomy catheter, the catheter comprising:

a tubular catheter shaft comprising:
a distal end and a catheter lumen with a longitudinal axis extending therethrough;
one or more pull cable guide tubes comprising pull cable lumens disposed about the circumference of the catheter lumen and extending the longitudinal length of the catheter shaft;
and
one or more pull cables disposed within the pull cable lumens and capable of being operably tensioned by a user of the catheter;
and
an expansile tip having a collapsed delivery configuration and a radially expanded deployed configuration, the expansile tip comprising one or more leaflets around the longitudinal axis and configured to assume a funnel profile when the expansile tip is in the expanded deployed configuration;
wherein the one or more pull cables are configured to actuate the expansile tip between the collapsed delivery configuration and the expanded deployed configuration when a tensile force is applied to the pull cables,
wherein the plurality of leaflets comprise one or more actuated leaflets and one or more passive leaflets,
wherein the one or more actuated leaflets and one or more passive leaflets comprise looped struts comprising a distal peak and one or more proximal joints connected to the catheter shaft and the looped struts of adjacent leaflets circumferentially overlap at crossover points, and
wherein the pull cables are fixedly connected at the crossover points.

8 more elements

A thrombectomy catheter, the catheter comprising:

a tubular catheter shaft comprising:
a distal end and a catheter lumen with a longitudinal axis extending therethrough;
and
one or more pull cable guide tubes disposed about the circumference of the catheter lumen, the guide tubes having one or more pull cables disposed within pull cable lumens and capable of being operably tensioned by a user of the catheter;
and
an expansile tip integrally formed at the distal end of the catheter shaft, the expansile tip comprising a plurality of leaflets configured to radially expand from a collapsed delivery configuration to an expanded deployed configuration when the one or more pull cables are tensioned wherein the one or more pull cables are configured to actuate the expansile tip between the collapsed delivery configuration and the expanded deployed configuration when a tensile force is applied to the pull cables,
wherein the plurality of leaflets comprise one or more actuated leaflets and one or more passive leaflets,
wherein the one or more actuated leaflets and one or more passive leaflets comprise looped struts comprising a distal peak and one or more proximal joints connected to the catheter shaft and the looped struts of adjacent leaflets circumferentially overlap at crossover points, and
wherein the pull cables are fixedly connected at the crossover points.

6 more elements

Dependencies are inferred from the claim text.

Facts

Application: 18/239,808Filed 30 Aug 2023
Priority: 27 Nov 2019
Published: 28 Dec 2023
Term ends: Not estimatedThe source records don’t support an estimate.

Classification10 codes

A61B 17/221
Implements for squeezing-off ulcers or the like on inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones;…
A61B 17/22
Surgical instruments, devices or methods: implements for squeezing-off ulcers or the like on inner organs of the body; Implements for scraping-out…
A61M 25/0147
Tip steering devices: with movable mechanical means, e.g. pull wires
A61B 2017/22045
With a guide wire: fixed to the catheter; guiding tip

Family

Application62/941,585Us provisional application · filed 27 Nov 2019
Application17/104,097Division · filed 25 Nov 2020
Application18/239,808Division
US 11,779,364 B2Related patent
US 2021/0153884 A1Published application
US 2023/0414235 A1This patent

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