Crimping device and method for loading stents and prosthetic heart valves
First Claim
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1. A crimping device comprising:
- a stationary plate having a plurality of individual first slots;
a movable member having a plurality of individual second slots, wherein the individual second slots are aligned with a portion of the corresponding individual first slots;
a plurality of movable blades arranged circumferentially to form a channel having a central axis extending therethrough, wherein—
each blade has a first end portion and a second end portion, and wherein the second end portion is radially farther from the central axis than the first end portion,each blade includes a pin projecting from the second end portion of the blade, andeach pin extends through one of the first slots and a corresponding one of the second slots; and
an actuator device operably coupled to the movable member and configured to move the movable member relative to the stationary plate, wherein movement of the movable member drives the plurality of pins along a path defined by the first and second slots such that the plurality of blades move radially inward to decrease a diameter of the channel, and wherein the radial inward movement of the blades is configured to reduce a diameter of a medical device positioned within the channel to accommodate sizing of a delivery capsule for implanting the medical device using a minimally invasive procedure.
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Abstract
Systems and devices for crimping a medical device and associated methods are disclosed herein. A crimping device configured in accordance with embodiments of the present technology can include, for example, a frame including a stationary plate, a movable member, and a plurality of blades arranged to form a channel and each including a pin that projects through a slot on the movable member and a corresponding slot on the stationary plate. The crimping device can be actuated to move the movable member relative to the stationary plate to drive the pins along paths defined by the slots to thereby drive the blades radially inward to crimp a medical device positioned within the channel.
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Citations
29 Claims
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1. A crimping device comprising:
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a stationary plate having a plurality of individual first slots; a movable member having a plurality of individual second slots, wherein the individual second slots are aligned with a portion of the corresponding individual first slots; a plurality of movable blades arranged circumferentially to form a channel having a central axis extending therethrough, wherein— each blade has a first end portion and a second end portion, and wherein the second end portion is radially farther from the central axis than the first end portion, each blade includes a pin projecting from the second end portion of the blade, and each pin extends through one of the first slots and a corresponding one of the second slots; and an actuator device operably coupled to the movable member and configured to move the movable member relative to the stationary plate, wherein movement of the movable member drives the plurality of pins along a path defined by the first and second slots such that the plurality of blades move radially inward to decrease a diameter of the channel, and wherein the radial inward movement of the blades is configured to reduce a diameter of a medical device positioned within the channel to accommodate sizing of a delivery capsule for implanting the medical device using a minimally invasive procedure. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A system for reducing a size of a stent device, the system comprising:
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a crimping device including; a frame having a stationary plate having a plurality of first slots, a movable member having a plurality of second slots, wherein the movable member is movable with respect to the stationary plate, a plurality of movable blades arranged circumferentially to define a channel having a central axis extending therethrough, wherein; the channel is configured to receive a prosthetic heart valve device in an unexpanded state, the prosthetic heart valve device including the stent device, the movable member is between the blades and the stationary plate, each blade has a first end portion and a second end portion spaced radially farther from the central axis than the first end portion, each blade includes a pin projecting from the second end portion and extending through one of the first slots and a corresponding one of the second slots, and an actuator device configured to move the movable member to drive the plurality of blades between a first position in which the channel has a first cross-sectional dimension to a second position in which the channel has a second cross-sectional dimension smaller than the first cross-sectional dimension, wherein moving the blades from the first position to the second position decreases an outer dimension of the stent device, and wherein the first slots are configured to maintain relative position between the blades as the blades move between the first and second positions; and a holder removably coupled to the frame and configured to hold the stent device within the channel when the blades are in the first position. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22)
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23. A method for reducing a size of a medical device for loading into a delivery capsule, the method comprising:
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positioning the medical device within a channel of the crimping device, wherein; the channel is defined by a plurality of movable blades arranged circumferentially around a central axis of the channel, each blade includes a pin projecting from an end portion of the blade spaced radially apart from the channel, and each pin projects through a corresponding first slot on a stationary plate and a corresponding second slot on a movable member positioned between the stationary plate and the blades, wherein the stationary plate comprises a plurality of first slots and the movable member comprises a plurality of second slots; and driving the blades radially inwardly from a first position to a second position to reduce a cross-sectional dimension of the channel, thereby reducing an outer diameter of the medical device, wherein driving the blades includes moving the movable member relative to the stationary plate to move the pins along individual arcuate paths defined by the corresponding second slots. - View Dependent Claims (24, 25, 26, 27, 28, 29)
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Specification