US 12,653,707 B2Granted

Crimping devices and methods

AssigneeEdwards Lifesciences Corporation

InventorsNicholas Brandon Aders, Kristen Hicks, Gil Senesh, Michael R. Bialas, Tung T. Le, Sean Chow, Thanh Huy Le

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Abstract

Devices and methods for crimping a prosthetic heart valve onto a delivery device are described. In some embodiments, valves are crimped over an inflatable balloon and between proximal and distal shoulders mounted on a shaft inside the balloon. Crimping methods can include multiple compression steps with the valve located in different axial positions relative to the crimping jaws at each different step. In some methods, the valve may extend partially outside of the crimping jaws during certain crimping steps, such that the crimping force is only applied to the part of the valve that is inside the jaws. Exemplary crimping devices can include two or more adjacent sets of jaws that close down to different inner diameters, such that different parts of a valve get compressed to different outer diameters at the same time during a single crimping step.

Claims19

Dependent claims

A device for crimping prosthetic heart valves, comprising:

a base;
an outer housing mounted on the base, the outer housing comprising a plurality of slots;
a handle connected to and extending from the outer housing;
an inner frame disposed in the housing, the inner frame comprising a plurality of projections extending into respective slots of the outer housing;
first jaws having an open position and a fully closed position, wherein the first jaws have a first inner diameter in the fully closed position;
and
second jaws having an open position and a fully closed position, wherein the second jaws have a second inner diameter in the fully closed position, wherein the second inner diameter is smaller than the first inner diameter;
wherein the first jaws and the second jaws are arranged axially side-by-side and in contact with each other within the outer housing, and wherein lateral aspects of the first and second jaws engage with the inner frame via a series of projections and slots;
wherein the outer housing, the inner frame, and the first and second jaws define a channel for receiving a prosthetic valve and a delivery device;
wherein actuation of the handle is effective to rotate the outer housing relative to the base, which causes the first and second jaws to move from their respective open positions to their respective fully closed positions at the same time;
wherein the first inner diameter and the second inner diameter are selected to correspond to desired outer diameters of a prosthetic heart valve that is crimped by the device.

8 more elements

Dependencies are inferred from the claim text.

Facts

Application: 18/607,271Filed 15 Mar 2024 · continuation
Priority: 18 Jun 2020
Published: US 2024/0216139 A14 Jul 2024
Granted: 16 Jun 2026
Term ends: Not estimatedThe source records don’t support an estimate.

Classification9 codes

A61F 2/9524
Means for mounting a stent or stent-graft onto or into a placement instrument: iris-type crimpers
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…
B23P 11/005
Connecting or disconnecting metal parts or objects by metal-working techniques not otherwise provided for: by expanding or crimping

Family

Application63/041,050Us provisional application · filed 18 Jun 2020
PCT/US2021/037738Parent of this continuation · filed 17 Jun 2021
Application18/080,043Parent of this continuation · filed 13 Dec 2022
US 2024/0216139 A1Pre-grant publication · published 4 Jul 2024
US 11,963,871 B2Parent of this continuation
US 2023/0103353 A1Published application
US 12,653,707 B2This patent

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