Lancing device with automatic cocking
First Claim
1. An automatically cocking lancing device, comprising:
- a casing having a firing button opening and a plunger opening;
a firing button movably positioned in said casing through said firing button opening;
a plunger movably positioned within said casing;
a firing button spring engaging said firing button and said casing;
a drive spring engaging said firing button and said plunger; and
a latch mechanism adjacent to said plunger for engaging said plunger, said firing button engaging said latch mechanism to disengage said plunger.
1 Assignment
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Accused Products
Abstract
The present invention is a lancing device with an automatic cocking feature. The automatically cocking lancing device utilizes a firing burton loaded with a firing button spring and a drive spring connecting the firing button to a plunger. As the user presses the firing burton and compresses the firing burton spring, the user also moves the plunger until the plunger engages a latching mechanism. The latching mechanism holds the plunger in a latched position, and, as the user continues pressing the firing button, the user compresses the drive spring connected to the plunger. Before firing, the drive spring is compressed enough such that the biasing force of the drive spring is sufficient to cause the plunger to strike and drive a lancet into the user'"'"'s finger. At that point, the pressing of the firing button causes the lancing device to fife. The plunger unlatches and drives the lancet into the user'"'"'s finger under the biasing force of the drive spring. At firing, the firing burton spring is compressed, and, once the user releases the firing button, the firing button spring returns the plunger and the firing button to the cocked position under the biasing force of the firing burton spring.
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Citations
6 Claims
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1. An automatically cocking lancing device, comprising:
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a casing having a firing button opening and a plunger opening; a firing button movably positioned in said casing through said firing button opening; a plunger movably positioned within said casing; a firing button spring engaging said firing button and said casing; a drive spring engaging said firing button and said plunger; and a latch mechanism adjacent to said plunger for engaging said plunger, said firing button engaging said latch mechanism to disengage said plunger. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification