Body fluid testing device
Body fluid testing device for analyzing a body fluid comprises a test media tape adapted to collect the body fluid. The test media tape comprises a tape and test media portions. A free tape portion without test medium is located between successive test media portions. The testing device further comprises a supply portion. The supply portion comprises a housing in which uncontaminated test media tape is contained. The housing further has an opening for withdrawing test media tape from the housing. The testing device further has a sealing means for closing the opening against the surrounding. A free tape portion of the test media tape is located between a wall of the housing and the sealing means when the sealing means closes the opening. Further aspects concern a test media cassette with sealing means and a method for providing test media while holding them sealed against humidity during onboard storage.
1. A body fluid testing device for analyzing a body fluid, comprising:
a test media tape adapted to collect the body fluid, said test media tape comprising a tape and test media portions, wherein a free tape portion without test medium is located between successive test media portions, said testing device further comprising a supply portion, wherein said supply portion comprises a housing in which uncontaminated test media tape is contained, said housing further having an opening for withdrawing test media tape from the housing, said supply portion further having a sealing means for closing said opening against the surrounding, wherein a free tape portion of said test media tape is located between a surface of the housing and the sealing means when said sealing means closes said opening, wherein the sealing means includes a deformable gasket, wherein said deformable gasket has a first and a second lip of sealing material, wherein said first lip is inclined apart from said opening and said second lip is inclined towards said opening, and wherein said sealing means has a lever for opening the sealing of the housing, the lever being actuated by tension applied to the test media tape.
2. A body fluid testing device according to claim 1 , wherein said tape in said free tape portion has a thickness of less than 100 micrometers.
3. A body fluid testing device according to claim 1 , wherein the gasket has a shore hardness of less than 70.
4. A body fluid testing device according to claim 1 , wherein said housing has an internal channel which is the sole air connection between a storage portion of said housing and the surrounding and said test media tape runs through said channel when leaving the housing via the opening of the housing.
5. A body fluid testing device according to claim 4 , wherein the length of said channel is equal or shorter than the length of a free tape portion between successive test media.
6. A body fluid testing device according to claim 1 , wherein said supply portion is a removable cassette.
7. The device of claim 1 further comprising a sensor for sensing a change of a test medium induced by reaction with said body fluid.
8. The device of claim 1 , wherein the sealing means can assume a first position in which the sealing means closes the opening of the container and a second position in which the opening is opened so that test media tape can be withdrawn out of the housing.
9. Body fluid testing device according to claim 1 , wherein the sealing means is a form fitting sealing means.
10. A body fluid testing device for analyzing a body fluid, comprising:
a test media tape adapted to collect the body fluid,
said test media tape comprising a tape and test media portions, wherein a free tape portion without test medium is located between successive test media portions,
said testing device further comprising a supply portion,
wherein said supply portion comprises a housing in which uncontaminated test media tape is contained, said housing further having an opening for withdrawing test media tape from the housing,
said supply portion further having a sealing means for closing said opening against the surrounding, wherein a free tape portion of said test media tape is located between a surface of the housing and the sealing means when said sealing means closes said opening, and
wherein said sealing means is a hydraulic sealing means, a pouch filled with fluid positioned to seal against the test media tape when pressurized.
11. The device of claim 10 , in which the hydraulic sealing means includes:
a stamp configured to press against the pouch to pressurize the pouch.