Injection device
The application relates to a device for an intermittent or continuous administration of a therapeutical substance, such as insulin, including a base part to which an injection part and a delivery part are fastened. The delivery part includes a reservoir and a pump, and the injection part includes base plate, a cannula part with a body with a through-going opening, and at least one cannula having a proximal end protruding from the lower side of the body and an adhesive portion for fastening the base plate to the skin of the user. The delivery part and the injection part are assembled through a connector having a fluid path leading fluid from the reservoir to the through-going opening in the cannula part.
1. A device for delivering fluid comprising an injection part and a removably connected fluid delivery part, the fluid delivery part comprising:
a reservoir, a pump, and a housing, the pump and the reservoir are covered with the housing, and
the injection part comprising;
a cannula part comprising a body with a through-going opening provided with a cannula;
a base plate comprising a first part and a second part, the first part and the second part being configured to be fastened to the patient's skin, the cannula extending past a proximal side of the base plate, and
an adhesive portion for fixation of the base plate to the skin of the patient;
wherein the delivery part and the injection part are assembled through a connector comprising a fluid path configured to lead fluid from the reservoir to the through-going opening in the cannula part, wherein the delivery part is fastened to the first part of the base plate and the cannula part is fastened to the second part of the base plate; and
wherein the delivery part and the injection part have at least two positions in relation to each other, a first position where the connector is disconnected from the delivery part and wherein an outlet from the reservoir is blocked with a first barrier which is not permeable for microorganisms and an inlet of the injection part is blocked with a second barrier which is reclosable and not permeable for microorganisms, and a second position wherein an open fluid connection is formed between the reservoir and the through-going opening in the cannula part.
2. A device according to claim 1 , wherein the base plate comprises a fastener for connecting and disconnecting the delivery part, the fastener extending from a distal side of the base plate.
3. A device according to claim 1 , wherein the fluid path is blocked with the second barrier comprising a membrane that can be penetrated by a needlelike object.
4. A device according to claim 1 , wherein one or both of the barriers comprise a material that is penetratable by a needlelike object and reclosable on retraction of the needlelike object.
5. A device according to claim 4 , characterized in that the needlelike object is blunt.
6. A device according to claim 4 , characterized in that the needlelike object is sharp-pointed.
7. A device according to claim 1 , wherein one or both of the barriers comprise a hard surface.
8. A device according to claim 1 , wherein the delivery part is releasably fastened to the base plate.
9. A device according to claim 1 , wherein the connector is fastened to the first part of the base plate.
10. A device according to claim 1 , wherein the cannula has a proximal end protruding from a proximal side of the body of the injection part.
11. A device according to claim 1 , wherein the device is fastened to the patient's skin by applying a mounting pad adhered to the proximal side of the base plate.
12. A device for delivering fluid comprising an injection part and a removably connected fluid delivery part, the fluid delivery part comprising:
a reservoir, a pump, and a housing, the pump and the reservoir are covered with the housing, and
the injection part comprising;
a cannula part comprising a body with a through-going opening provided with a cannula;
a base plate comprising a first part and a second part, the first part and the second part being configured to be fastened to the patient's skin, the cannula extending past a proximal side of the base plate, and
an adhesive portion for fixation of the base plate to the skin of the patient;
wherein the delivery part and the injection part are assembled through a connector comprising a fluid path configured to lead fluid from the reservoir to the through-going opening in the cannula part, wherein the delivery part is fastened to the first part of the base plate and the cannula part is fastened to the second part of the base plate; and
wherein the delivery part and the injection part have at least two positions in relation to each other, a first position where the connector is disconnected from the delivery part and wherein an outlet from the reservoir is blocked with a first barrier which is not permeable for microorganisms and an inlet of the injection part is blocked with a second barrier which is reclosable and not permeable for microorganisms, and a second position wherein an open fluid connection is formed between the reservoir and the through-going opening in the cannula part; and
wherein the first part and the second part of the base plate are connected to each other by at least one flexible area.