Processing

Please wait...

Settings

Settings

Goto Application

1. IN6575/DELNP/2008 - SINGLE-USE SKIN PRICKING DEVICE

Note: Text based on automatic Optical Character Recognition processes. Please use the PDF version for legal matters

[ EN ]
1. A single-use skin pricking device comprising:a housing;a lancet disposed within the housing;biasing means coupled between the housing and the lancet;a trigger mounted to the housing for relative movement therewith, the trigger being releasably coupled to the lancet such that movement of the trigger in a first direction moves the lancet in a direction to compress said biasing means, and then causes release of the lancet from the trigger whereby said biasing means drives the lancet in a second direction substantially opposite to said first direction. 2. A device according to claim 1, the lancet comprising a cap covering an end of a needle, wherein said movement of the trigger in the first direction first causes the cap to be removed from the lancet to expose the needle. 3. A device according to claim 2, wherein said cap is substantially fixed relative to said housing. 4. A device as claimed in any preceding claim and comprising one or more guide tracks disposed within the housing for guiding movement of the lancet within the housing. 5. A device as claimed in claim 4, wherein said track is substantially Ushaped. 6. A device as claimed in any preceding claim, wherein the trigger is coupled to the lancet by slip means, the slip means allowing the trigger to disengage from the lancet at some predefined point of travel in said first direction. 7. A device according to claim 6, said slip means comprising trigger wedges formed on the trigger and wedge engaging formations formed on the lancet, the trigger wedges engaging said formations as the trigger moves in said first direction up to a point of travel where the lancet moves to disengage the wedges from the formations to release the lancet. 8. A device as claimed in any preceding claim, wherein the biasing means is arranged to retract the lancet fully within the housing once the device has been fired. 9. A device as claimed in any preceding claim, wherein the biasing means is formed integrally with the housing. 10. A device as claimed in any preceding claim, wherein the biasing means is partially preloaded prior to depressing the trigger. 11. A device as claimed in preceding claim, wherein the biasing means comprises a helical spring. 12. A device as claimed in any preceding claim wherein the trigger comprises an opening through a lancet needle projects when the device is fired. 13. A device as claimed in any preceding claim, wherein the trigger is actuated by pressing it directly against an area of skin to be pricked. 14. A device as claimed in any preceding claim, wherein the trigger and the housing are moulded integrally with a weakened portion disposed at an interface between the trigger and the housing, the weakened portion configured to be broken when the trigger is pressed. 15. A device as claimed in any preceding claim, further comprising a locking mechanism arranged to lock the trigger relative to the housing in a predetermined position once the trigger has been pressed. 16. A device as claimed in any preceding claim, further comprising a window provided in the housing to allow a user to view the lancet. 17. A single-use skin pricking device comprising:a housing;a lancet disposed within the housing;a spring coupled between said housing and said lancet;a guide track within the housing, the lancet being mounted in the guide track; anda trigger releasably coupled to the lancet and having an opening formed therein through which a needle of the lancet can project. 18. A device according to claim 17, wherein said track is substantially U-shaped 19. A device according to claim 17 or 18, wherein said trigger is telescopically mounted in the housing. 20. A device according to claim 19 when appended to claim 18, said legs of the U-shaped track lying substantially parallel to the direction of movement of the trigger. 21. A single-use skin pricking device substantially as hereinbefore described with reference to the accompanying drawings.