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Claims for Patent: 7,828,787

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Claims for Patent: 7,828,787

Title:Connector for packaging containing medical fluids and packaging for medical fluids
Abstract: The disclosure relates to a connector for packaging containing medical fluids, in particular infusion or transfusion bags, including a tubular connection part for receiving a spike for the withdrawal of fluid, and having a lower opening on the packaging side and an upper opening on the connection side. A self-sealing membrane, which is pierced by the spike, is located in the connection part. The membrane has an upper, annular section leading into a lower, plate-shaped section, said annular section of the membrane surrounding the spike in a sealing manner, when the latter pierces the plate-shaped section. The membrane acts as a guide for the spike and also reseals the connector, once the spike has been removed.
Inventor(s): Brandenburger; Torsten (Niddatal, DE), Rahimy; Ismael (Friedberg, DE)
Assignee: Fresenius Kabi Deutschland GmbH (Bad Homburg, DE)
Application Number:10/514,817
Patent Claims: 1. A connector for packages containing medical fluids, comprising a tubular connection part for receiving a spike for the extraction of the fluid, the connection part comprising a lower section and an upper section, said parts being fixed in a snap-in manner, and a package-side lower opening and a connection-side upper opening; a break-off sealing part that seals the connection-side opening of the connection part; and a self-sealing membrane disposed in the connection part, which can be pierced by the spike for the extraction of the fluid, said self-sealing membrane comprising: an inner dish-shaped section having a top surface with a central recessed planar portion and an annular wall portion having a first inner face extending up at a first obtuse angle from the planar portion, which can be penetrated by a tubular extraction device; an inner circular section having a second inner face extending up from the first inner face at a second obtuse angle relative to the planar portion, wherein the second obtuse angle is greater than the first obtuse angle; and an outer circular section for the fixing of the membrane at the extraction point, said outer circular section having a substantially T-shape configuration clamped with elastic deformation of the membrane between the lower section and the upper section during use, wherein the inner circular section is connected to the stem of the T-shape of the outer circular section, wherein the inner circular section and the inner dish-shaped section together form a trough-shaped recess, and wherein the inner circular section of the membrane surrounds the spike in a sealed manner during penetration of the dish-shaped portion.

2. The connector according to claim 1, wherein the material of the dish-shaped portion of the self-sealing membrane is weakened.

3. The connector according to claim 1, further comprising a second membrane capable of being pierced disposed in the connection part beneath the self-sealing membrane to form an intermediate space.

4. The connector according to claim 3, wherein the second membrane capable of being pierced is a one-piece component of the connection part.

5. The connector according to claim 3, wherein the second membrane is curved upwards or downwards.

6. The connector according to claim 1, wherein the sealing part is connected via a circular rupture zone to the connection part.

7. The connector according to claim 1, wherein the sealing part has a grip part comprising an arrow pointing upwards, wherein the arrow is a recess in the grip part.

8. The connector according to claim 1, wherein the lower section of the connection part comprises an arrow pointing upwards, which is a raised structure.

9. Packaging for medical fluids with a connector according to claim 1.

10. The connector according to claim 2, wherein the material of the dish-shaped portion of the self-sealing membrane is pre-slit.

11. The connector according to claim 8, wherein the arrow is designed as a raised structure in a recessed grip.

12. Infusion bag with a connector according to claim 1.

13. Transfusion bag with a connector according to claim 1.

14. A self-sealing membrane for use in extraction points for containers for medical fluids, comprising: an inner dish-shaped section having a top surface with a central recessed planar portion and an annular wall portion having a first inner face extending up at a first obtuse angle from the planar portion, which can be penetrated by a tubular extraction device; an inner circular section having a second inner face extending up from the first inner face at a second obtuse angle relative to the planar portion, wherein the second obtuse angle is greater than the first obtuse angle; and an outer circular section for the fixing of the membrane at the extraction point, said outer circular section having a substantially T-shape configuration configured to be clamped with elastic deformation of the membrane between a lower section and an upper section of a connection part, wherein the inner circular section is connected to the stem of the T-shape on of the outer circular section, wherein the inner circular section and the inner dish-shaped section together form a trough-shaped recess, and wherein the inner circular section surrounds the tubular extraction device in a sealed manner during the penetration of the dish-shaped section.

15. The membrane according to claim 14, wherein the material of the inner dish-shaped section is weakened.

16. The membrane according to claim 15, wherein the material of the inner dish-shaped section is slit.

17. The membrane of claim 14, wherein the inner dish-shaped section has a continuous planar bottom surface extending the entire diameter of the inner dish-shaped section.

18. The membrane of claim 14, wherein the first inner face and the second inner face are flat.

19. The connector according to claim 1, wherein the inner dish-shaped section has a planar bottom that extends lower that the bottom of the outer circular section.
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