Positive displacement pump
First Claim
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1. An apparatus for delivering a therapeutic fluid into a body of a patient, comprising:
- a dispensing unit with;
a reusable part;
a disposable part comprising a housing with an outlet port, a reservoir for the therapeutic fluid and a connecting lumen that is part of and extends from the outlet port and which is in fluid communication directly with the reservoir;
a plunger having a plunger head and a plunger rod for displacing the therapeutic fluid from the reservoir to the outlet port;
a driving mechanism; and
an electronic component including at least a controller for controlling at least the operation of the driving mechanism, anda cradle with upper and bottom sides, wherein the bottom side is adherable to skin of the patient, and the dispensing unit is connectable to and disconnectable from the upper side of the cradle, wherein the cradle further comprises a tubular protrusion emerging upwardly from the upper side which defines a well therein, the outlet port being configured as a recess in the housing of the disposal part which is sized to accommodate the tubular protrusion of the cradle, and the connecting lumen is configured to pierce a septum provided in the well upon accommodation of the tubular protrusion of the cradle in the outlet port which simultaneously fluidically connects, via the connecting lumen, the reservoir to a cannula extending from the bottom side of the cradle.
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Abstract
Systems, methods and apparatuses for delivering therapeutic fluid to the body of a patient are disclosed. The apparatus includes a dispensing unit having a driving mechanism, a pumping mechanism, a reservoir containing therapeutic fluid, and an outlet port. The driving mechanism causes the pumping mechanism to positively displace therapeutic fluid within the reservoir for delivery of therapeutic fluid to the body of the patient via the outlet port.
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Citations
19 Claims
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1. An apparatus for delivering a therapeutic fluid into a body of a patient, comprising:
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a dispensing unit with; a reusable part; a disposable part comprising a housing with an outlet port, a reservoir for the therapeutic fluid and a connecting lumen that is part of and extends from the outlet port and which is in fluid communication directly with the reservoir; a plunger having a plunger head and a plunger rod for displacing the therapeutic fluid from the reservoir to the outlet port; a driving mechanism; and an electronic component including at least a controller for controlling at least the operation of the driving mechanism, and a cradle with upper and bottom sides, wherein the bottom side is adherable to skin of the patient, and the dispensing unit is connectable to and disconnectable from the upper side of the cradle, wherein the cradle further comprises a tubular protrusion emerging upwardly from the upper side which defines a well therein, the outlet port being configured as a recess in the housing of the disposal part which is sized to accommodate the tubular protrusion of the cradle, and the connecting lumen is configured to pierce a septum provided in the well upon accommodation of the tubular protrusion of the cradle in the outlet port which simultaneously fluidically connects, via the connecting lumen, the reservoir to a cannula extending from the bottom side of the cradle. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method for delivering a therapeutic fluid into a body of a patient, comprising:
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providing an apparatus comprising; a dispensing unit which has; a reusable part; a disposable part comprising a housing with an outlet port, a reservoir for the therapeutic fluid and a connecting lumen that is part of and extends from the outlet port and which is in fluid communication directly with the reservoir; a plunger having a plunger head and a plunger rod for displacing the therapeutic fluid from the reservoir to the outlet port; a driving mechanism; and an electronic component including at least a controller for controlling at least the operation of the driving mechanism; and a cradle with upper and bottom sides, wherein the bottom side is adherable to skin of the patient, and the dispensing unit is connectable to and disconnectable from the upper side of the cradle, wherein the cradle further comprises a tubular protrusion emerging upwardly from the upper side which defines a well therein, the outlet port being configured as a recess in the housing of the disposal part which is sized to accommodate the tubular protrusion of the cradle, and the connecting lumen is configured to pierce a septum provided in the well upon accommodation of the tubular protrusion of the cradle in the outlet port which simultaneously fluidically connects, via the connecting lumen, the reservoir to a cannula extending from the bottom side of the cradle; piercing a septum of a container with a connecting element of the reservoir; and pulling on a shaft of the plunger, creating a suction effect thereby drawing the therapeutic fluid from the container. - View Dependent Claims (17, 18, 19)
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Specification