News Column

"Devices and Methods for Crimping and Loading a Medical Device into a Delivery System" in Patent Application Approval Process

August 28, 2014



By a News Reporter-Staff News Editor at Politics & Government Week -- A patent application by the inventors Soundararajan, Gopikrishnan (Irvine, CA); Webster, Christopher (Tustin, CA); Dang, Kenny (Santa Ana, CA); Rangwala, Hussain (Santa Ana, CA), filed on February 1, 2013, was made available online on August 14, 2014, according to news reporting originating from Washington, D.C., by VerticalNews correspondents.

This patent application is assigned to Medtronic, Inc.

The following quote was obtained by the news editors from the background information supplied by the inventors: "The present invention can relate to devices and methods for crimping and loading a medical device into a delivery system.

"Recently, minimally invasive approaches have been developed to facilitate surgical and catheter-based implantation of prostheses. For example, during transcatheter medical device implantations, a medical device such as a stented device is radially contracted or crimped to a diameter smaller than the diameter of the device when implanted. The crimped medical device is then loaded onto a delivery system such as a delivery catheter so that the medical device can be introduced into a body lumen, for example, into the femoral artery, the subclavian artery, or the aorta, or into a body cavity, for example, a chamber of the heart (e.g., the ventricle). Using the delivery catheter, the medical device can be guided to a desired implantation site through the body lumen or body cavity and deployed at the desired site. Current methods for crimping and loading the medical device can be tedious and can potentially damage the medical device.

"Accordingly, improved systems for crimping and loading a medical device for use in such delivery systems are desired."

In addition to the background information obtained for this patent application, VerticalNews journalists also obtained the inventors' summary information for this patent application: "In some embodiments, a device for crimping and loading an expandable medical device from an expanded configuration to a compressed configuration includes an actuator, a compression assembly, and a pusher. The actuator may include a compression chamber and an opening. The compression assembly may be disposed in the compression chamber and may include a plurality of compression elements. The compression elements may be coupled to each other to form a central cavity. The compression elements may also be coupled to the actuator such that rotation of the actuator causes the compression elements to rotate such that the central cavity radially compresses from an expanded configuration to a compressed configuration. The pusher may include a pusher rod configured to push the radially compressed medical device out of the central cavity when in the compressed configuration. The pusher may be coupled to the actuator and be configured to translate relative to the actuator towards the compression chamber when the cavity is in the compressed configuration such that the pusher rod may enter the cavity and push the medical device out of the cavity into delivery system.

BRIEF DESCRIPTION OF THE FIGURES

"The accompanying figures, which are incorporated herein, form part of the specification and illustrate embodiments of the invention. Together with the description, the figures further serve to explain the principles of and to enable a person skilled in the relevant art(s) to make and use the devices and methods described herein.

"FIG. 1 illustrates an exploded perspective view of a crimping and loading device.

"FIG. 2 illustrates a front perspective view of the outer cylinder of the crimping and loading device of FIG. 1.

"FIG. 3 illustrates a rear perspective view of the outer cylinder of FIG. 2.

"FIG. 4 illustrates a rear view of the outer cylinder of FIG. 2.

"FIG. 5 illustrates a front perspective view of the inner sleeve of the crimping and loading device of FIG. 1.

"FIG. 6 illustrates a rear perspective view of the inner sleeve of FIG. 5.

"FIG. 7 illustrates a front perspective view of the pusher of the crimping and loading device of FIG. 1.

"FIG. 8 illustrates three compression elements of the compression assembly of the crimping and loading device of FIG. 1.

"FIG. 9 illustrates perspective view of the crimping and loading device.

"FIG. 10 illustrates a perspective view of the crimping and loading device with the compression assembly in the compressed configuration and parts of the device shown transparent.

"FIG. 11 illustrates a front view of the crimping and loading device with the compression assembly in the compressed configuration and parts of the device shown transparent.

"FIG. 12 illustrates a perspective view of the crimping and loading device with only one of the compression elements shown and in the compressed configuration, with parts of the device shown transparent."

URL and more information on this patent application, see: Soundararajan, Gopikrishnan; Webster, Christopher; Dang, Kenny; Rangwala, Hussain. Devices and Methods for Crimping and Loading a Medical Device into a Delivery System. Filed February 1, 2013 and posted August 14, 2014. Patent URL: http://appft.uspto.gov/netacgi/nph-Parser?Sect1=PTO2&Sect2=HITOFF&u=%2Fnetahtml%2FPTO%2Fsearch-adv.html&r=7834&p=157&f=G&l=50&d=PG01&S1=20140807.PD.&OS=PD/20140807&RS=PD/20140807

Keywords for this news article include: Medtronic Inc.

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Source: Politics & Government Week


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