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Systems, devices and methods for sustained delivery of a therapeutic fluid

  • US 9,662,440 B2
  • Filed: 12/20/2007
  • Issued: 05/30/2017
  • Est. Priority Date: 12/22/2006
  • Status: Active Grant
First Claim
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1. A therapeutic fluid infusion system for delivering a therapeutic fluid to a body of a patient, the system comprising:

  • a skin-adherable unit comprising;

    a cradle configured on a first side for adhesion to the skin of the patient,wherein the first side has a periphery,a cannula, anda self-sealable septum disposed within a proximal portion of a well portion,wherein a distal portion of the cannula is configured for subcutaneous placement within the body of the patient and wherein the self-sealable septum separates a proximal portion of the cannula from an external environment; and

    a dispensing unit removably attachable to a second side of the skin-adherable unit that is opposite to the first side, the dispensing unit being sized to fully cover over the well portion and the self-sealable septum and comprising;

    a pump,a reservoir for containing a therapeutic fluid, anda connecting lumen configured to penetrate the self-sealable septum in order to bring the dispensing unit in fluid communication with the skin-adherable unit,wherein the reservoir, at least a portion of the pump and at least a portion of the connecting lumen are contained within a single housing,wherein the dispensing unit is provided with an end for engagement with a corresponding end of the cradle via a protrusion along a rear end of the dispensing unit, the corresponding end of the cradle having a corresponding recess, the engagement enabling pivotal movement of the dispensing unit with respect to the cradle such that the pivotal movement results in connection of the dispensing unit to the cradle when a front end of the dispensing unit is pivoted toward the cradle and a notch along the front end of the dispensing unit snappingly engages a latch in the cradle, and the dispensing unit is detachably securable to the cradle upon the connection, wherein the latch is elastically deformable and is configured to detach from the notch in an outward direction upon application of an outward pulling-force that pulls the latch outward of the periphery of the first side of the cradle; and

    a removable cover for covering the skin-adherable unit;

    wherein the cover substantially seals the skin-adherable unit from the external environment when the skin-adherable unit is adhered to the skin of the patient and while the dispensing unit is not connected to the skin-adherable unit, the cover configured to be substantially vertically placeable onto the skin and around the skin-adherable unit to avoid contamination and abrasion of elements protruding from the skin.

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