초록 ▼

A medication injection or delivery system is provided for injecting fluids such as insulin within body tissue. The device includes a housing, a flexible shaft movably mounted within the housing, and a dose setting mechanism for controlling the movement of the shaft with respect to a fluid-containing

A medication injection or delivery system is provided for injecting fluids such as insulin within body tissue. The device includes a housing, a flexible shaft movably mounted within the housing, and a dose setting mechanism for controlling the movement of the shaft with respect to a fluid-containing cartridge removably positioned within or mounted to the housing. The flexible shaft, according to exemplary embodiments, includes a plunger and a flexible cable connected to the dose setting mechanism. The plunger and dose setting mechanism are connected together by the flexible shaft. The dose setting mechanism, in one aspect of the invention, includes a screw, a locking mechanism, and a nut assembly connected to the flexible shaft. The dose setting mechanism is used to set the dosage and prime the catheter. The plunger retracts into a recess to permit a new cartridge to be installed quickly.

대표청구항 ▼

1. A portable infusion device comprising:a housing having a cavity, a first opening into the cavity, and a second opening into the cavity, the cavity having, a curved portion; an elongate flexible member, comprising a spring on the outside of the flexible member, the flexible member being positioned

1. A portable infusion device comprising:a housing having a cavity, a first opening into the cavity, and a second opening into the cavity, the cavity having, a curved portion; an elongate flexible member, comprising a spring on the outside of the flexible member, the flexible member being positioned at least in part in the curved portion, the flexible member being substantially axially incompressible and laterally flexible; and a manual dosage selection mechanism, whereby, when a medication ampule including a piston is positioned adjacent to the first opening, the flexible member can be advanced through the curved portion of the cavity to push against and move the ampule piston without substantially compressing the flexible member, and whereby the manual dosage selection mechanism controls the distance that the elongate flexible member moves with respect to the medication ampule.