Disposable lancet
First Claim
Patent Images
1. A single use disposable lancet device comprising:
- a housing;
a spring mechanism pivotally mounted in said housing, said spring mechanism comprising a sharpened end, wherein said spring mechanism is mounted within said housing in a substantially unbiased state; and
an actuator for biasing said spring mechanism, said actuator being movable, with respect to said housing, from an initial position to a biasing position to a locked position, in that order;
said actuator including a locking device which engages said spring mechanism for preventing movement of said actuator from said locked position;
said housing including an opening sized to permit said sharpened end to protrude therethrough exteriorly of said housing upon biasing of said spring mechanism, and said sharpened end retracting back inside of said housing in said locked position; and
said spring mechanism and said sharpened end being mounted within said housing in a substantially unbiased state when said actuator is in said initial position, said spring mechanism being biased by said actuator when said actuator is in said biased position causing said sharpened end to protrude from said housing, and said spring mechanism returning to a substantially unbiased state when said actuator is in said locked position.
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Accused Products
Abstract
Single use disposable lancet devices are disclosed as inexpensive, easy to use, and safe instruments for the piercing or cutting of a patient'"'"'s skin to obtain small amounts of blood for diagnostic purposes. The devices described readily visually indicate, upon casual observance, whether or not they have yet been used. A locking device is further provided to physically prevent re-use of the devices after they have been used once.
291 Citations
21 Claims
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1. A single use disposable lancet device comprising:
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a housing; a spring mechanism pivotally mounted in said housing, said spring mechanism comprising a sharpened end, wherein said spring mechanism is mounted within said housing in a substantially unbiased state; and an actuator for biasing said spring mechanism, said actuator being movable, with respect to said housing, from an initial position to a biasing position to a locked position, in that order; said actuator including a locking device which engages said spring mechanism for preventing movement of said actuator from said locked position; said housing including an opening sized to permit said sharpened end to protrude therethrough exteriorly of said housing upon biasing of said spring mechanism, and said sharpened end retracting back inside of said housing in said locked position; and said spring mechanism and said sharpened end being mounted within said housing in a substantially unbiased state when said actuator is in said initial position, said spring mechanism being biased by said actuator when said actuator is in said biased position causing said sharpened end to protrude from said housing, and said spring mechanism returning to a substantially unbiased state when said actuator is in said locked position. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A single use disposable lancet device comprising:
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a housing; a spring mechanism mounted to said housing, said spring mechanism comprising a sharpened end, wherein said spring mechanism is mounted within said housing in a substantially unbiased state; an actuator for biasing said spring mechanism, wherein said actuator is movable, with respect to said housing, to bias said spring mechanism to extend said sharpened end so as to protrude from said housing; means for indicating that the lancet device has not been used and that the lancet device has been used, wherein said means for indicating is movable with said actuator to move from indicating that the lancet device has not been used and that the lancet device has been used; and means for preventing re-use of the lancet device after a single use has been accomplished, wherein said means for preventing engages said actuator upon protrusion of said sharpened end from said housing. - View Dependent Claims (18, 19, 20, 21)
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Specification