Lancing device
First Claim
1. A method of using a lancing device, the method comprising the acts of:
- providing a lancing device including a parallelogram-shaped gear rack, a pinion rotatably supported in the gear rack, a slider-crank system including a drive arm coupled to the pinion, and a lance holder coupled to the drive arm;
rotating the pinion in response to the movement of the gear rack; and
driving the lance holder in linear motion in response to the rotation of the pinion.
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0 Petitions
Accused Products
Abstract
A lancing device comprising a movable parallelogram-shaped rack. The rack rotates a linearly fixed pinion which drives a slider-crank system. The slider-crank system in turn drives a lance holder. The parallelogram-shaped rack defines one or more predetermined paths along which the pinion moves. The lance holder is prevented from being extended beyond a predetermined depth when the pinion reaches a predetermined position along the one or more predetermined paths. The pinion is mechanically stopped from further progress by intersecting two legs of the parallelogram-shaped rack. Teeth of the rack may be modified to reduce the change the pinion may jam in the rack.
152 Citations
18 Claims
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1. A method of using a lancing device, the method comprising the acts of:
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providing a lancing device including a parallelogram-shaped gear rack, a pinion rotatably supported in the gear rack, a slider-crank system including a drive arm coupled to the pinion, and a lance holder coupled to the drive arm;
rotating the pinion in response to the movement of the gear rack; and
driving the lance holder in linear motion in response to the rotation of the pinion. - View Dependent Claims (2, 10, 11, 12, 13)
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3. The method of claim I wherein the parallelogram-shaped gear rack comprises a proximal acute angle, and a distal acute angle positioned closer to the lance holder than the proximal acute angle, and wherein the pinion rotates 180°
- when moving between the distal acute angle and the proximal acute angle.
- View Dependent Claims (4, 5, 6, 7, 8, 9)
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14. A method of using a lancing device, the method comprising the acts of:
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providing a frame including a parallelogram-shaped gear rack, a pinion rotatably mounted to interface the gear rack, and a lance holder, the frame being movably supported;
rotating the pinion in response to the movement of the gear rack; and
moving the lance holder between a fired position and a cocked position, wherein movement of the lance holder is in response to rotation of the pinion. - View Dependent Claims (15, 16, 17, 18)
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Specification