Blood lancing device
First Claim
1. A blood lancing device, comprisinga lancet longitudinally displaceable in a first direction to puncture a skin of a patient and then into a second opposite direction out of the punctured skin;
- spring means having an action stroke in said first direction;
a toothed rack longitudinally displaceable in said first direction under the action of said active stroke of said spring means;
a toothed pinion engageable with said toothed rack and rotatable by the letter during said longitudinal displacement of said toothed rack in said first direction;
a lever having a first end connected with said pinion and a second end connected with said lancet so that during the rotation of said pinion by said toothed rack activated by said spring means said lever by said second end moves said lancet first in said first direction and thereafter in said second direction.
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Accused Products
Abstract
A blood lancing device for puncturing a skin has a lancet longitudinally displaceable in a first direction to puncture a skin of a patient and then into a second opposite direction out of the punctured skin, a spring having an active stroke, a toothed rack displaceable by the spring during its active stroke in the first direction; a toothed pinion engageable with and rotatable by the toothed rack when it moves in the first direction, and a lever having a first end connected with the toothed pinion and a second end connected with the lancet so that during the rotation of the pinion under the action of displacement of the toothed rack caused by the spring the second end of the lever moves the lancet successively in the first direction and in the second direction.
329 Citations
13 Claims
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1. A blood lancing device, comprising
a lancet longitudinally displaceable in a first direction to puncture a skin of a patient and then into a second opposite direction out of the punctured skin; -
spring means having an action stroke in said first direction; a toothed rack longitudinally displaceable in said first direction under the action of said active stroke of said spring means; a toothed pinion engageable with said toothed rack and rotatable by the letter during said longitudinal displacement of said toothed rack in said first direction; a lever having a first end connected with said pinion and a second end connected with said lancet so that during the rotation of said pinion by said toothed rack activated by said spring means said lever by said second end moves said lancet first in said first direction and thereafter in said second direction. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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Specification