News Column

Patent Issued for Refill of Implantable Fluid Delivery Devices Based on Therapeutic Fluid Expiration

August 20, 2014



By a News Reporter-Staff News Editor at Biotech Week -- A patent by the inventor Drew, Touby A. (Golden Valley, MN), filed on December 18, 2009, was published online on August 5, 2014, according to news reporting originating from Alexandria, Virginia, by NewsRx correspondents (see also Medtronic, Inc.).

Patent number 8795260 is assigned to Medtronic, Inc. (Minneapolis, MN).

The following quote was obtained by the news editors from the background information supplied by the inventors: "A variety of medical devices are used for chronic, i.e., long-term, delivery of fluid therapy to patients suffering from a variety of conditions, such as chronic pain, tremor, Parkinson's disease, epilepsy, urinary or fecal incontinence, sexual dysfunction, obesity, spasticity, or gastroparesis. For example, pumps or other fluid delivery devices can be used for chronic delivery of therapeutic agents, such as drugs, to patients. These devices are intended to provide a patient with a therapeutic output to alleviate or assist with a variety of conditions. Typically, such devices are implanted in a patient and provide a therapeutic output under specified conditions on a recurring basis.

"One type of implantable fluid delivery device is a drug infusion device that can deliver a fluid medication to a patient at a selected site. A drug infusion device may be implanted at a location in the body of a patient and deliver a fluid medication through a catheter to a selected delivery site in the body. Drug infusion devices, such as implantable drug pumps, commonly include a reservoir for holding a supply of a therapeutic fluid, such as a drug, for delivery to a site in the patient. The fluid reservoir can be self-sealing and accessible through one or more ports. A pump is fluidly coupled to the reservoir for delivering the therapeutic substance to the patient. A catheter provides a pathway for delivering the therapeutic substance from the pump to the delivery site in the patient."

In addition to the background information obtained for this patent, NewsRx journalists also obtained the inventor's summary information for this patent: "In general, this disclosure describes techniques for employing an expiration time of a therapeutic fluid delivered by a fluid delivery device to calculate a fill volume and/or determine a refill interval for refilling the device with the therapeutic fluid. The expiration time of the therapeutic fluid may be based on or dictated by a stability time. The stability time may be set, for example, by the manufacturer of the therapeutic fluid, a clinician treating a patient to whom the fluid is to be delivered, the manufacturer of the device delivering the fluid, or combinations thereof.

"In one example, a fluid delivery system includes a fluid delivery device, a memory, and a processor. The fluid delivery device is at least partially implantable. The memory stores data including an expiration time for a therapeutic fluid configured to be stored in the fluid delivery device. The processor is configured to determine a refill interval for refilling the fluid delivery device with the therapeutic fluid based on the expiration time.

"In another example, a method includes determining a refill interval for a therapeutic fluid delivered by a fluid delivery device based on an expiration time for the therapeutic fluid, and generating a refill indication based on the refill interval. In some examples, the refill indication may be a refill alarm that is generated, for example, in advance of expiration of the refill interval or upon expiration of the refill interval.

"In one example, a programmer for an implantable fluid delivery device includes a memory and a processor. The memory stores data including an expiration time for a therapeutic fluid configured to be stored in the fluid delivery device. The processor is configured to calculate an amount of the therapeutic fluid to store in the fluid delivery device based on the expiration time for the therapeutic fluid.

"In one more example, a method includes identifying a therapeutic fluid configured to be delivered by an implantable fluid delivery device, determining an expiration time for the therapeutic fluid, and calculating an amount of the therapeutic fluid to store in the fluid delivery device based on the expiration time.

"The details of one or more examples disclosed herein are set forth in the accompanying drawings and the description below. Other features, objects, and advantages will be apparent from the description and drawings, and from the claims."

URL and more information on this patent, see: Drew, Touby A.. Refill of Implantable Fluid Delivery Devices Based on Therapeutic Fluid Expiration. U.S. Patent Number 8795260, filed December 18, 2009, and published online on August 5, 2014. Patent URL: http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.htm&r=1&f=G&l=50&s1=8795260.PN.&OS=PN/8795260RS=PN/8795260

Keywords for this news article include: Therapy, Medtronic Inc..

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


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Source: Biotech Week


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