News Column

"Stimulation Cuff and Implantation Tool" in Patent Application Approval Process

July 21, 2014



By a News Reporter-Staff News Editor at Cardiovascular Week -- A patent application by the inventors Zarembo, Paul E. (Vadnais Heights, MN); Tockman, Bruce A. (Scandia, MN), filed on December 27, 2013, was made available online on July 10, 2014, according to news reporting originating from Washington, D.C., by NewsRx correspondents (see also Cardiac Pacemakers, Inc.).

This patent application is assigned to Cardiac Pacemakers, Inc.

The following quote was obtained by the news editors from the background information supplied by the inventors: "Implantable stimulation systems can be used for treating various diseases, such as heart failure. An implantable stimulation system may include a pulse generator electrically coupled with a lead. Various types of leads can be used in the body for routing electrical stimulation to a target. One type of lead is a cuff. A cuff can have a generally annular shape to wrap around a nerve or other target. A cuff can have one or more electrodes on the inside of the cuff for delivering stimulation to, and/or receiving electrical signals from, the target. However, being that the cuff may be sized to wrap around a nerve or other small target, the cuff itself can be small and hard to implant along the target. For example, wrapping a cuff around a nerve can be a difficult maneuver to perform in a surgical environment. Accordingly, there is a need for cuffs that can be efficiently and reliably implanted as well as tools to aid in the implantation procedure."

In addition to the background information obtained for this patent application, NewsRx journalists also obtained the inventors' summary information for this patent application: "Example 1 concerns a cuff stimulation system. The system can include a cuff comprising a main body and at least one electrode, the main body comprising an inner tab, an outer tab, and an intermediate portion extending between the inner tab and the outer tab, the at least one electrode disposed on the intermediate portion, the main body biased to assume a coiled arrangement wherein the inner tab is part of an inner most layer and the outer tab is part of an outer most layer, the cuff configured to be uncoiled from the coiled arrangement. The system can further comprise a tool configured to uncoil the cuff and wrap the cuff around a target. The tool can comprise a first tubular member, the first tubular member encircled by the cuff when the cuff is in the curled arrangement, the first tubular member rotatable as the cuff uncoils. The tool can further comprise a first elongate element attached to first tubular member, the first elongate element configured to pull the first tubular member to uncurl the cuff.

"In example 2, the system of example 1, wherein the inner tab is configured to engage the first elongate element as the cuff is uncurled to stop the first tubular member from rolling off of the cuff.

"In example 3, the system of example 2, wherein the inner tab comprises one or more projections that engage the first elongate element to stop the first tubular member from rolling off of the cuff.

"In example 4, the system of example 2, wherein the inner tab comprises one or more slots that receive the first elongate element to stop the first tubular member from rolling off of the cuff.

"In example 5, the system of example 2, wherein the inner tab comprises one or more holes through which the first elongate element extends to attach the first tubular member to the inner tab.

"In example 6, the system of any preceding example, wherein the cuff has an inner surface and an outer surface that is opposite the inner surface, the one or more electrodes are disposed on the inner surface, and the first tubular member rolls along the inner surface as the cuff uncoils.

"In example 7, the system of any preceding example, wherein the cuff has a first width along the intermediate portion and a second width along the inner tab, and the first width is different than the second width.

"In example 8, the system of example 7, wherein the first tubular member has a length that is about equal to the first width and less than the second width.

"In example 9, the system of any preceding example, wherein the first elongate element is a string.

"In example 10, the system of any of examples 1-8, wherein the first elongate element is rigid wire.

"In example 11, the system of any preceding example, wherein the tool further comprises a second tubular member, the second tubular member underneath at least one layer of the main body when the cuff is in the curled arrangement. The tool can further comprise a second elongate element attached to the second tubular member, the second elongate element configured to pull the second tubular member to uncurl the cuff, wherein the cuff is uncurled by pulling the first elongate element and the second elongate element in opposite directions.

"In example 12, the system of any preceding example, wherein the first elongate element comprises a handle that allows a user to pull the first elongate element to roll the first tubular member over at least a portion of the main body to unroll the cuff.

"In example 13, the system of any preceding example, wherein the main body is formed by a base layer and a bias layer.

"In example 14, the system of example 13, wherein the bias layer is tapered proximate one or more edges of the main body.

"In example 15, the system of any preceding example, wherein a stiffener strip is provided along an edge of the main body.

"Example 16 concerns a cuff comprising at least one electrode and a main body. The main body can comprise an inner tab, an outer tab, and an intermediate portion extending between the inner tab and the outer tab such that the inner tab and the outer tab define opposite ends of the main body, the at least one electrode disposed on the intermediate portion, the main body narrower along the intermediate portion and wider along each of the inner tab and the outer tab, wherein the main body is biased such that the cuff assumes a coiled arrangement and the cuff is configured to be uncoiled from the coiled arrangement to wrap around a target.

"In example 17, the system of example 16, wherein the inner tab comprises two corners on opposite sides of the inner tab, the two corners configured to engage a tool to hold the cuff in an uncoiled arrangement.

"Example 18 concerns a method of wrapping a cuff around a target, the method comprising locating a cuff in a coiled arrangement proximate the target, the cuff comprising a main body and at least one electrode, the main body comprising an inner tab, an outer tab, and an intermediate portion extending between the inner tab and the outer tab, the at least one electrode disposed on the intermediate portion, the main body biased such that the cuff assumes the coiled arrangement. The method can further include uncoiling the cuff, the cuff uncoiled by pulling on a first elongate element attached to a first tubular member, the first tubular member encircled within the cuff. The method can further include engaging the target with the inner surface of the main body along the intermediate portion while the inner tab is releaseably attached to the first elongate element and then releasing the inner tab from attachment with the first elongate element to allow the cuff to wrap around the target.

"In example 19, the method of example 18, wherein uncoiling the cuff further comprises pulling on a second elongate element attached to a second tubular member, the second elongate element attached to the outer tab, the second elongate element and the first elongate element pulled in opposite directions to uncoil the cuff.

"In example 20, the method of either of examples 19 or 20, further comprising detaching the first elongate element from the inner tab after the cuff is at least partially wrapped around the target.

"While multiple embodiments are disclosed, still other embodiments of the present disclosure will become apparent to those skilled in the art from the following detailed description, which shows and describes illustrative embodiments of the disclosure. Accordingly, the drawings and detailed description are to be regarded as illustrative in nature and not restrictive.

BRIEF DESCRIPTION OF THE DRAWINGS

"FIG. 1 illustrates an implantable nerve stimulator for treating a patient.

"FIG. 2 illustrates a cuff wrapped around a nerve.

"FIG. 3 illustrates a cuff uncoiled with the aid for a tool.

"FIG. 4 illustrates a cuff laid flat.

"FIG. 5 illustrates a cuff in a coiled arrangement.

"FIGS. 6A-C illustrate a cuff being wrapped around a nerve with a tool.

"FIGS. 7-9B illustrate various inner tab and tool configurations.

"FIGS. 10-11 illustrate various outer tab and tool configurations.

"FIGS. 12-14 illustrate the use of a stiffener with a cuff.

"FIGS. 15-16 illustrate cross sectional views of a cuff body.

"While the disclosure is amenable to various modifications and alternative forms, specific embodiments have been shown by way of example in the drawings and are described in detail below. The intention, however, is not to limit the disclosure to the particular embodiments described herein. On the contrary, the disclosure is intended to cover all modifications, equivalents, and alternatives falling within the scope of the disclosure as defined by the appended claims."

URL and more information on this patent application, see: Zarembo, Paul E.; Tockman, Bruce A. Stimulation Cuff and Implantation Tool. Filed December 27, 2013 and posted July 10, 2014. Patent URL: http://appft.uspto.gov/netacgi/nph-Parser?Sect1=PTO2&Sect2=HITOFF&u=%2Fnetahtml%2FPTO%2Fsearch-adv.html&r=1720&p=35&f=G&l=50&d=PG01&S1=20140703.PD.&OS=PD/20140703&RS=PD/20140703

Keywords for this news article include: Cardiology, Cardiac Pacemakers Inc..

Our reports deliver fact-based news of research and discoveries from around the world. Copyright 2014, NewsRx LLC


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Source: Cardiovascular Week


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