Aseptically connectable sensor patch
The invention discloses a first connection unit having a plurality of sensor surfaces and which is adapted to be aseptically connected to a second connection unit mounted e.g. on a flexible bioreactor bag.
1. An aseptically connectable sensor patch, comprising:
a first connection unit, comprising:
at least one sensor surface;
a first terminal end surface provided with a first opening of a first recess configured for fluid flow therein, wherein a ratio between a depth and a width of said first recess is less than 1, and wherein said first opening is sealed by a first releasable adherent film; and
a first gasket mounted on said first terminal end surface; and
a second connection unit adapted to mate aseptically with the first connection unit, comprising:
a second releasably adherent film arranged on a second terminal surface having a second opening of a second recess configured for fluid flow therein, wherein a ratio between a depth and a width of said second recess is less than 1, and wherein the second releasably adherent film is arranged to mate with the first releasably adherent film; and
a second gasket mounted on said second terminal end surface,
wherein the ratio between the depth and the width of the first recess and the second recess is effective to reduce clogging of fluid flowing therein;
wherein said first and second films are adapted to be pulled out together two and two after mating, such that corresponding first and second openings in said first and second terminal end surfaces are mated aseptically to form a single recess from the first recess and the second recess, and said first and second gaskets are in sealing abutment with each other;
wherein a total volume of the single recess is equal to a sum of a first volume of the first recess and a second volume of the second recess when the aseptically connectable sensor patch is fully assembled; and
wherein the at least one sensor surface at least partially protrudes into the single recess.
2. The aseptically connectable sensor patch of claim 1 , wherein the at least one sensor surface comprises at least one enzymatic sensor surface.
3. The aseptically connectable sensor patch of claim 1 , having a height of less than 3 cm.
4. The aseptically connectable sensor patch of claim 1 , wherein the second opening has a frustoconical shape.
5. The aseptically connectable sensor patch of claim 1 , further comprising a clamp over said first and second connection units.
6. The aseptically connectable sensor patch of claim 1 , wherein said second connection unit is arranged on a flexible bioreactor bag, with said second opening forming a port in a wall of said flexible bioreactor bag.
7. The aseptically connectable sensor patch of claim 1 , wherein the ratio between a depth and a width of said first or second recess is less than 0.5.
8. The aseptically connectable sensor patch of claim 1 , wherein the ratio between a depth and a width of said first or second recess is less than 0.25.
9. The aseptically connectable sensor patch of claim 1 , wherein the first releasably adherent film is folded over itself 180 degrees and comprises a tab on an edge thereof to facilitate removal.