US 2023/0141002 A1Published application

Device for applying fluid to leaflets of a heart valve prosthesis during crimping

AssigneeMedtronic, Inc.

InventorsMatthew ZIEBOL, Alkindi KIBRIA, Victoria UNG, Matthew GENOVESE, Yogesh DAREKAR, Matthew BALDWIN, Jason BOWE, Radhika BHARGAV

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Abstract

A leaflet folding accessory or tool configured for use with a crimper when radially compressing a transcatheter valve prosthesis into a crimped configuration for delivery within a vasculature. The crimping accessory is configured to apply or remove fluid to or from the at least one leaflet of the transcatheter valve prosthesis during the crimping process to prevent protrusion of the leaflets into the frame of the transcatheter valve prosthesis that may cause leaflet pinching and damage.

Claims20

Dependent claims

An assembly comprising:

a transcatheter heart valve prosthesis including a frame and a valve component including at least one leaflet disposed within and secured to the frame, the transcatheter heart valve prosthesis having a crimped configuration for delivery within a vasculature and an expanded configuration for deployment within a native heart valve;
and
a crimping accessory configured for use with a crimper when radially compressing the transcatheter heart valve prosthesis into the crimped configuration, wherein the crimping accessory includes a body having an aperture formed on an outer surface thereof, at least one nozzle coupled to the body, and at least one fluid chamber formed between the aperture and the nozzle such that the aperture and the at least one nozzle are in fluid communication, the crimping accessory being configured to apply or remove pressurized fluid via the at least one nozzle to or from the at least one leaflet of the transcatheter heart valve prosthesis to hold the at least one leaflet in a substantially closed state when the crimper is radially compressing the transcatheter heart valve prosthesis into the crimped configuration.

A method of crimping a transcatheter heart valve prosthesis onto a delivery system, comprising:

positioning a transcatheter heart valve prosthesis into a crimper chamber of a crimper, the transcatheter valve prosthesis including a frame and a valve component including at least one leaflet disposed within and secured to the frame, wherein the transcatheter heart valve prosthesis is in an expanded configuration and is mounted over a balloon of a balloon catheter;
operating the crimper to radially compress the transcatheter heart valve prosthesis on the balloon of the balloon catheter into a partially crimped configuration;
removing the partially crimped transcatheter heart valve prosthesis on the balloon catheter from the crimper and placing it within a crimping accessory;
while disposed within the crimping accessory, applying pressurized fluid to the at least one leaflet of the transcatheter heart valve prosthesis to hold the at least one leaflet in a substantially closed state;
removing the partially crimped transcatheter heart valve prosthesis on the balloon catheter from the crimping accessory and placing it back in the crimper chamber of the crimper;
operating the crimper to further radially compress the transcatheter heart valve prothesis into a fully crimped configuration on the balloon catheter configured for delivery within a vasculature;
and
removing the transcatheter heart valve prosthesis in the crimped configuration on the balloon catheter of the delivery system from the crimper.

5 more elements

Dependencies are inferred from the claim text.

Facts

Application: 17/967,764Filed 17 Oct 2022
Priority: 10 Nov 2021
Published: 11 May 2023
Term ends: Not estimatedThe source records don’t support an estimate.

Classification6 codes

A61F 2/2433
Deployment by mechanical expansion: using balloon catheter
A61F 2/9522
Instruments specially adapted for placement or removal of stents or stent-grafts: means for mounting a stent or stent-graft onto or into a…
A61F 2/2418
With soft flexible valve members, e.g. tissue valves shaped like natural valves: scaffolds therefor, e.g. support stents
A61F 2/9524
Means for mounting a stent or stent-graft onto or into a placement instrument: iris-type crimpers