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  Infusion device capable of providing multiple liquid medicamentsUSPTO Application #: 20070299398Title: Infusion device capable of providing multiple liquid medicaments Abstract: A disposable infusion device comprises a base arranged to adhere to a patient's skin and a cannula arranged to extend from the base to beneath the patient's skin to deliver a liquid medicament to the patient. The device further includes a first source arranged to provide the cannula with a first liquid medicament and a second source arranged to provide the cannula with a second liquid medicament. (end of abstract)
Agent: Richard O. Gray, Jr. - Bellevue, WA, US Inventors: Clifton A. Alferness, John M. Adams, Daniel Hawkins USPTO Applicaton #: 20070299398 - Class: 604151000 (USPTO) Related Patent Categories: Surgery, Means For Introducing Or Removing Material From Body For Therapeutic Purposes (e.g., Medicating, Irrigating, Aspirating, Etc.), Treating Material Introduced Into Or Removed From Body Orifice, Or Inserted Or Removed Subcutaneously Other Than By Diffusing Through Skin, Material Introduced Or Removed Through Conduit, Holder, Or Implantable Reservoir Inserted In Body, Treating Material Forced Into Or Out Of Body By Self-acting Fluid Pressure, Motor-driven, Or Mechanical Energy Storing Means (e.g., Pressure Infusion Or Aspiration, Etc.), Material Impelled By Pump The Patent Description & Claims data below is from USPTO Patent Application 20070299398. Brief Patent Description - Full Patent Description - Patent Application Claims
CLAIM OF PRIORITY [0001] This application claims priority to U.S. Provisional Application Ser. No. 60/782,941, filed on Mar. 16, 2006, which is incorporated by reference. BACKGROUND [0002] Tight control over the delivery of insulin in both type I (usually juvenile onset) and type II (usually late adult onset), has been shown to improve the quality of life as well as the general health of these patients. Insulin delivery has been dominated by subcutaneous injections of both long acting insulin to cover the basal needs of the patient and by short acting insulin to compensate for meals and snacks. Recently, the development of electronic, external insulin infusion pumps has allowed the continuous infusion of fast acting insulin for the maintenance of the basal needs as well as the compensatory doses for meals and snacks. These infusion systems have shown to improve control of blood glucose levels, however, they suffer the drawbacks of size, cost, and complexity, which prevents many patients from accepting this technology over the standard subcutaneous injections. These pumps are electronically controlled and must be programmed to supply the desired amounts of basal and bolus insulin. SUMMARY [0003] In one embodiment the invention provides a disposable infusion device comprising a base arranged to adhere to a patient's skin, a cannula arranged to extend from the base to beneath the patient's skin to deliver a liquid medicament to the patient, a first source arranged to provide the cannula with a first liquid medicament, and a second source arranged to provide the cannula with a second liquid medicament. [0004] One of the first and second sources may be arranged to provide its liquid medicament in fixed volume increments. The one of the first and second sources may include a reservoir for holding the liquid medicament and a fixed volume pump that delivers the liquid medicament to the cannula in the fixed volume increments. The fixed volume pump may comprise a piston pump, a dome pump, or a squeezable tube. [0005] One of the first and second sources may comprise a reservoir. For example, the first source may comprise a reservoir and a pump and the second source may include a port. The port may be arranged to communicate with the cannula and to receive the second liquid medicament from an instrument external to the device. [0006] The one of the first and second sources may include a pump communicating with the reservoir and arranged to deliver the liquid medicament to the cannula and a mechanical motor that drives the pump. The mechanical motor may include a wind-up spring. [0007] The one of the first and second sources may include a pump and a fill port communicating with the reservoir to enable the reservoir to be filled by an instrument external to the device. The reservoir may be formed of flexible material. [0008] In another embodiment, the first source may comprise a first reservoir, the second source may comprise a second reservoir, and the device may further include a valve that selectively communicates the first reservoir with the cannula or the second reservoir with the cannula. [0009] In a further embodiment, the first source may comprise a first reservoir arranged to hold the first liquid medicament and a first pump arranged to deliver the first liquid medicament to the cannula and the second source may comprise a second reservoir arranged to hold the second liquid medicament and a second pump arranged to deliver the second liquid medicament to the cannula. One of the first and second sources is arranged to provide its associated liquid medicament at a substantially constant rate. The device may further comprise a rate adjuster that renders the substantially constant rate adjustable. [0010] One of the first and second sources may be a replaceable reservoir. [0011] In a still further embodiment, a disposable infusion device comprises a base arranged to adhere to a patient's skin, a cannula arranged to extend from the base to beneath the patient's skin to deliver a liquid medicament to the patient, a first source arranged to provide the cannula with a first liquid medicament, and a second source arranged to provide the cannula with a second liquid medicament. The first source includes a reservoir and a pump that pumps the first liquid medicament from the reservoir to the cannula, and the second source includes a port that receives the second liquid medicament from an instrument external to the device and conveys the second liquid medicament to the cannula. [0012] The pump may comprise a fixed volume pump that delivers the liquid medicament to the cannula in fixed volume increments. [0013] The fixed volume pump may comprise a piston pump, a dome pump, or a squeezable tube. [0014] In a still further embodiment, a disposable infusion device comprises a base arranged to adhere to a patient's skin, a cannula arranged to extend from the base to beneath the patient's skin to deliver a liquid medicament to the patient, a first source arranged to provide the cannula with a first liquid medicament, and a second source arranged to provide the cannula with a second liquid medicament. The first source is a first reservoir that holds the first liquid medicament and the second source is a second reservoir that holds the second liquid medicament. The device further includes a pump that pumps the first and/or second liquid to the cannula. The pump may be a single pump communicating with the cannula and the device may further include a valve that selectively couples the first and second reservoirs to the pump. The pump may comprise a first pump that pumps the first liquid medicament from the first reservoir to the cannula and a second pump that pumps the second liquid medicament from the second reservoir to the cannula, and the device may further include a valve that selectively couples the first pump and the second pump to the cannula. BRIEF DESCRIPTION OF THE DRAWINGS [0015] The features of the present invention which are believed to be novel are set forth with particularity in the appended claims. The invention, together with further features and advantages thereof, may best be understood by making reference to the following description taken in conjunction with the accompanying drawings, in the several figures of which like reference numerals identify identical elements, and wherein: [0016] FIG. 1 is a side view of an infusion port that may be used in practicing the invention; [0017] FIG. 2 is a side view of an infusion port, loading membrane, and insulin reservoir according to one embodiment of the invention; [0018] FIG. 2A is a schematic diagram illustrating one potential manner of operation of the system of FIG. 2; [0019] FIG. 2B a schematic diagram illustrating another potential manner of operation of the system of FIG. 2; [0020] FIG. 3 is a side view, with portions cut away, of a disposable insulin infusion system including a mechanical timer according to another embodiment of the invention; Continue reading... Full patent description for Infusion device capable of providing multiple liquid medicaments Brief Patent Description - Full Patent Description - Patent Application Claims Click on the above for other options relating to this Infusion device capable of providing multiple liquid medicaments patent application. ###  How KEYWORD MONITOR works... a FREE service from FreshPatents1. Sign up (takes 30 seconds). 2. Fill in the keywords to be monitored. 3. Each week you receive an email with patent applications related to your keywords. Start now! - Receive info on patent apps like Infusion device capable of providing multiple liquid medicaments or other areas of interest. ### Previous Patent Application: Infusion device with pressurizable liquid medicament chamber Next Patent Application: Infusion device with dome pump Industry Class: Surgery ### FreshPatents.com Support Thank you for viewing the Infusion device capable of providing multiple liquid medicaments patent info. 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