INJECTION DEVICE

• US 20090221971A1
• Filed: 12/22/2006
• Published: 09/03/2009
• Est. Priority Date: 12/23/2005
• Status: Active Grant

• Current Assignee: Unomedical AS (ConvaTec Group Plc)
• Original Assignee: Unomedical AS (ConvaTec Group Plc)
• Inventors: Mejlhede, Signe Thorning, Mogensen, Lasse W., Gyrn, Steffen, Hordum, Elo
• Granted Patent: US 8,303,549 B2
• Time in Patent Office: Days
• US Class Current: 604/180
• CPC Class Codes: A61M 2005/14252 with needle insertion means
• CPC Class Codes: A61M 2005/14268 with a reusable and a disposable component
• CPC Class Codes: A61M 2005/1581 Right-angle needle-type devices
• CPC Class Codes: A61M 2005/1587 suitable for being connected to an infusion line after insertion into a patient
• CPC Class Codes: A61M 39/12 for joining a flexible tube to a rigid attachment
• CPC Class Codes: A61M 5/142 Pressure infusion, e.g. using pumps
• CPC Class Codes: A61M 5/14248 of the skin patch type
• CPC Class Codes: A61M 5/158 Needles for infusions; Accessories therefor, e.g. for inserting infusion needles, or for holding them on the body

Abstract

The application relates to a device for an intermittent or continuous administration of a therapeutical substance, such as insulin, comprising a base part to which an injection part and a delivery part (3,4) are fastened. The delivery part comprises a reservoir and a pump, and the injection part comprises base plate (10), a cannula part (1) 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 means for fastening the base plate (10) to the skin of the user. The device is characterized in that the delivery part (3, 4) and the injection part is assembled through a connector (2) comprising a fluid path leading fluid from the reservoir (4) to the through-going opening in the cannula part (1, 1 b) which fluid path comprises means (7, 8, 8b, 8c) for blocking access to the injection part when the connector (2) is disconnected from the delivery part (3, 4) and/or the injection part.

Claims

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, and

the injection part comprises comprising;

a base plate configured to be fastened to the patient'"'"'s skin,

a cannula part comprising a body with a through-going opening provided with a 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, the fluid path comprising a sealing member for blocking access to the injection part when the connector is disconnected from the delivery part or the injection part;

wherein the delivery part is fastened to a first part of the base plate and the injection part is fastened to a second part of the base plate, and one or more flexible areas are positioned between the first part and the second part of the base part.

3. A device according to claim 1 wherein the base plate comprises a fastener for connecting and disconnecting of the delivery device extending from the distal side of the base plate.

4. A device according to claim 1, wherein the fluid path is blocked with a membrane that can be penetrated by a needlelike object.

5. A device according to claim 1, wherein the delivery part and the injection part have at least two positions in relation to each other, a first position wherein the outlet from the reservoir is blocked with a first barrier which is not permeable for microorganisms and the inlet of the through going opening in body of the injection part is blocked with a second barrier which is 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 injection part.

6. A device according to claim 5, 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.

7. A device according to claim 6, characterized in that the needlelike object is blunt.

8. A device according to claim 6, characterized in that the needlelike object is sharp-pointed.

9. A device according to claim 5, wherein one or both of the barriers comprise a hard surface.

10. A device according to claim 1, wherein the injection part and the delivery part are connected to each other by one or more flexible areas.

11. A device according to claim 1, wherein the connector is connected to one of the injection part and the delivery part by one or more non-flexible areas and connected to the other of the injection part and the delivery part by one or more flexible areas.

12. A device according to claim 11, wherein the connector is connected to the injection part by a flexible area.

13. A device according to claim 10, wherein at least one flexible area is constructed of an area with reduced material dimensions relative to the injection part.

14. A device according to claim 10, wherein at least one flexible area is constructed of an area made by a softer and more flexible material relative to the injection part.

15. A device according to claim 10, wherein at least one flexible area comprises a material configured to be pleated or folded for extension and compression of the at least one flexible area.

16. A device according to claim 1, wherein no non-flexible areas interconnect the injection part and the delivery part.

17. A device according to claim 1, wherein the delivery part is releasably fastened to the base part.

18. A device according to claim 1, wherein the connector is unreleasably fastened to the base part.

19. A device according to claim 1, wherein the connector is fastened to the first part of the base part.

20. A device according to claim 1, wherein the connector is fastened unreleasably to the first part of the base part with a non-flexible connection.

21. A device according to claim 1, wherein the flexible areas comprise an area of the base part separating the first part from the second part and a fluid connection connecting the connector to the injection part.

22. A device according to claim 1, wherein the at least one cannula has a proximal end protruding from the proximal side of the body of the injection part.

23. A device according to claim 1, wherein the at least one cannula has a proximal end protruding from a side of the body of the injection part.

24. A device according to claim 1, wherein the device is fastened to the patients skin by applying a mounting pad adhered to the proximal side of the base part or to the proximal side of the infusion part.

2. (canceled)