News Column

Patent Application Titled "Adhesive Structure for Medical Device" Published Online

May 29, 2014



By a News Reporter-Staff News Editor at Politics & Government Week -- According to news reporting originating from Washington, D.C., by VerticalNews journalists, a patent application by the inventors CABIRI, Oz (Macabim-Reut, IL); FILMAN, Reuven Y. (Netanya, IL); DEGTIAR, Boris (Modiin, IL), filed on November 2, 2012, was made available online on May 15, 2014.

The assignee for this patent application is Medimop Medical Projects Ltd.

Reporters obtained the following quote from the background information supplied by the inventors: "The present invention, in some embodiments thereof, relates to a method and system for attaching a device to a pliable surface and, more particularly, but not exclusively, to a method and system to attach a medical device to skin using a partially attached, variable stiffness adhesive system.

"U.S. Pat. No. 6,585,707 to Cabiri discloses a system adapted to be disposed between a rigid or semi-rigid device and human skin for reliably attaching the device to the skin for an extended period of time. The system of Cabiri '707 includes a skin-contacting surface for adhering to human skin, and an opposed surface for attachment to a rigid or semi-rigid device. The system is attached along its opposed surface to a portion of the total area of the adjacent surface of the device. When the device is subjected to external stress, the stress is transmitted through the area of attachment and distributed to the unattached area. This minimizes stress on the skin and reduces the chance of detachment from the skin.

"United States Patent Application No. 2007/0219597 discloses an adhesive patch system that may be used for affixing a pump or other object to a human body. Such an adhesive patch system may include two sets of adhesive members, each member including an adhesive material on at least one side so as to attach to the body. The members of the first set are spaced to allow the members of the second set to attach to the body in spaces provided between the members of the first set, and the members of the second set are spaced to allow members of the first set to detach from the body without detaching the members of the second set.

"U.S. Pat. No. 8,025,658 discloses an adhesive patch of a medical device that may have selective areas with adhesive material of varying adhesion strengths. In other embodiments, an adhesive patch of a medical device may include adhesive material that may be activated by a catalyst to increase or decrease the adhesion strength of the adhesive material. In further embodiments, a medical device may include a pierceable membrane containing an agent, the pierceable membrane positioned to be pierced by a needle and to cause some of the agent to be carried to the user-patient.

"U.S. Pat. No. 7,837,651 discloses a drug delivery infusion pump assembly which may include a cannula assembly comprising a cannula, which is disposable on the face of a patient, and which includes left and right cannula support wings each having a wing tip portion with an adhesive pad removably adhesively attachable to a side of the face of the patient. The adhesive pad may provide a more convenient cannula attachment for the patient than a conventional headband.

"Additional background art includes adhesives for EKG electrodes and other electronic sensors having rigid and semi rigid bodies with sensing areas and or operational areas that touch or are inserted into the skin"

In addition to obtaining background information on this patent application, VerticalNews editors also obtained the inventors' summary information for this patent application: "According to an aspect of some embodiments of the present invention there is provided a system for anchoring a location on a surface of a medical infusion device to the skin of a user. The system may include an adhesive substrate for adhering to the skin of the user and an interface attaching the substrate to the surface of the device. The substrate may include a skirt extending beyond the interface. The skirt may be flexibly attached to the interface. The system may further include a stiffener stiffening a portion of the skirt. The stiffener may be less flexible than the substrate.

"According to some embodiments of the invention, the stiffener may inhibit folding of the skirt under an out of plane bending force.

"According to some embodiments of the invention, the out of plane bending force may include gravity.

"According to some embodiments of the invention, the stiffener may be stiff enough to suspend the skirt against a gravity force.

"According to some embodiments of the invention, the stiffener may be biased away from a skin attaching surface of the substrate.

"According to some embodiments of the invention, the stiffener may extend the skirt away from the infusion device.

"According to some embodiments of the invention, the stiffener may hold the substrate taut.

"According to some embodiments of the invention, the system may further include an adhesive cover, and a tab for peeling the adhesive cover from the substrate. The stiffener may support the substrate adjacent to the tab, supplying an opposing force when peeling the cover away from the substrate.

"According to some embodiments of the invention, the tab may be located on the skirt.

"According to some embodiments of the invention, the stiffener may be stiff enough to resist a force on the substrate caused by peeling of the cover.

"According to some embodiments of the invention, the system may further include a start location for removal of the adhesive system from the user. The stiffener may extend along a peeling line to the start location, facilitating removing of the to adhesive from the user's skin.

"According to some embodiments of the invention, the start location may be on the skirt.

"According to some embodiments of the invention, the stiffener includes a sharp turn between the peeling line and the interface.

"According to an aspect of some embodiments of the present invention there is provided a system for anchoring a medical infusion device to a skin of a recipient. The system may include an adhesive substrate configured for adhering to the skin of the user. The system may further include a location on a surface of the device to be held firmly to the skin of the user, and a multi-part adhesive cover. The system may further include a first tab for peeling a first part of the cover and a second tab for peeling a second part of the cover. The first tab may be located beside the second tab and the first tab may be separated from the second tab by a notch.

"According to some embodiments of the invention, the notch may be wedge shaped.

"According to some embodiments of the invention, the notch may be triangular.

"According to some embodiments of the invention, the stiffener may interpose between at least a part of the surface and a remaining portion of the substrate.

"According to some embodiments of the invention, the stiffener may extend beyond a boundary of the surface.

"According to some embodiments of the invention, the substrate may extend beyond a boundary of the stiffener.

"According to some embodiments of the invention, the substrate may be divided into a plurality of discrete portions. Each of the portions may be joined to a separate respective subsurface of the surface.

"According to some embodiments of the invention, a portion of the stiffener may interpose between the interface and the substrate.

"According to some embodiments of the invention, the location to be held stationary may include a needle insertion point and/or a sensor.

"According to some embodiments of the invention, the interface may surround the stationary location on at least two sides.

"According to some embodiments of the invention, the interface may surround the stationary location on at least three sides.

"According to some embodiments of the invention, the interface may surround the stationary location completely.

"According to some embodiments of the invention, the substrate may interpose between the stiffener and the interface.

"According to some embodiments of the invention, the stiffener may include one or more ribs extending from the interface toward an edge of the substrate.

"According to some embodiments of the invention, an unbacked section of the substrate may be surrounded on at least two sides by the stiffener.

"According to some embodiments of the invention, the stiffener may be attached to the surface of the device and the substrate may be affixed to the stiffener.

"According to some embodiments of the invention, an unbacked skirt of the substrate may surround the surface on at least two sides.

"According to some embodiments of the invention, an unbacked skirt of the substrate may surround the surface on at least three sides.

"According to some embodiments of the invention, an unbacked skirt of the substrate may surround the surface on all sides.

"According to some embodiments of the invention, wherein the substrate is may not be directly attached to the surface.

"According to some embodiments of the invention, the surface may be protected from inadvertent adhesion to the substrate.

"According to an aspect of some embodiments of the present invention there is provided a system to remove a plurality of adhesive covers from an infusion device. The system may include a plurality of pull tabs, and at least one notch separating between two of the plurality of tabs.

"According to an aspect of some embodiments of the present invention there is provided a method of installing an adhesive to a medical infusion device. The method may include attaching part of a stiffener layer to a surface of the device and affixing an adhesive substrate to the layer.

"According to some embodiments of the invention, the method may further include leaving another portion of the substrate unbacked by the stiffener.

"According to some embodiments of the invention, the attaching may be on at least three sides of a location to be held firmly with respect to a site on the skin of the user.

"According to some embodiments of the invention, the interface may include at least one relatively flexible region at least one less flexible region.

"According to an aspect of some embodiments of the present invention there is provided a system for anchoring a location on a surface of a medical infusion device to the skin of a user. The system may include a flexible adhesive substrate for adhering to the skin of the user and an interface attaching the substrate to the surface of the device. The interface may include at least one relatively flexible region and at least one less flexible region.

"According to some embodiments of the invention, interface may be attached to a portion of the substrate.

"According to some embodiments of the invention, the system may further include a stiffener affixed to an unattached portion of said substrate.

"According to some embodiments of the invention, the system may further include an adhesive cover, and a tab for peeling the adhesive cover from the substrate. The stiffener may support the substrate adjacent to the tab, supplying an opposing force when peeling the cover away from the substrate.

"According to some embodiments of the invention, the system may further include a start location for removal of the adhesive system from the user. The stiffener may extend along a peeling line to the start location, facilitating removing of the adhesive from the user's skin.

"Unless otherwise defined, all technical and/or scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the invention pertains. Although methods and materials similar or equivalent to those described herein can be used in the practice or testing of embodiments of the invention, exemplary methods and/or materials are described below. In case of conflict, the patent specification, including definitions, will control. In addition, the materials, methods, and examples are illustrative only and are not intended to be necessarily limiting.

BRIEF DESCRIPTION OF THE DRAWINGS

"Some embodiments of the invention are herein described, by way of example only, with reference to the accompanying drawings. With specific reference now to the drawings in detail, it is stressed that the particulars shown are by way of example and for purposes of illustrative discussion of embodiments of the invention. In this regard, the description taken with the drawings makes apparent to those skilled in the art how embodiments of the invention may be practiced.

"In the drawings:

"FIG. 1 is a flow chart illustration of an exemplary embodiment of a method of adhering a medical device to a user's skin;

"FIG. 2A is a view of an infuser from a first perspective showing an adhesive cover on a surface configured for attaching adjacent to a user's skin;

"FIG. 2B is a is a perspective view of a infuser from a second perspective;

"FIG. 3 is a cutaway projection of a stiffener layer of an adhesive system attached to an infuser;

"FIG. 4A is a exploded view of an exemplary embodiment of an adhesive system;

"FIG. 4B is a projection view of an exemplary embodiment of an adhesive cover;

"FIG. 5A is a perspective view of an exemplary embodiment of an adhesive cover on an infuser having an attaching interface surrounding a needle insertion point;

"FIG. 5B is a exploded view of an exemplary embodiment of an adhesive system for an infuser having an attaching interface surrounding a needle insertion point;

"FIG. 6A is a exploded view of an exemplary embodiment of an adhesive system having discrete sections;

"FIG. 6B is a schematic view through layers of an exemplary embodiment of an adhesive system having discrete sections;

"FIG. 7 is a flow chart illustration of an exemplary embodiment of a method for attaching an adhesive system to an infuser."

For more information, see this patent application: CABIRI, Oz; FILMAN, Reuven Y.; DEGTIAR, Boris. Adhesive Structure for Medical Device. Filed November 2, 2012 and posted May 15, 2014. Patent URL: http://appft.uspto.gov/netacgi/nph-Parser?Sect1=PTO2&Sect2=HITOFF&u=%2Fnetahtml%2FPTO%2Fsearch-adv.html&r=1409&p=29&f=G&l=50&d=PG01&S1=20140508.PD.&OS=PD/20140508&RS=PD/20140508

Keywords for this news article include: Medimop Medical Projects Ltd.

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Source: Politics & Government Week


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