Device for sampling blood
First Claim
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1. A blood sampling device, comprising:
- a lancet having a skin piercing member disposed at an end thereof;
an elongated lancet guide, said lancet disposed within and axially movable relative to said lancet guide;
a shell, said lancet guide disposed at least partially within said shell with a first longitudinal end of said lancet guide extending from said shell and placed against a user'"'"'s skin in operation of said sampling device, said shell axially movable relative to said lancet guide from a rest position to an actuate position;
a bias element disposed between said lancet and a stop on said shell;
a releasable catch configured on said lancet guide, said catch engaged with said lancet in a rest position of said lancet, and a release member configured on said shell so as to contact and release said catch in said actuate position of shell; and
wherein in use of said device, forced movement of said shell relative to said lancet guide loads said bias element against said lancet until said release member contacts and releases said catch at said actuate position of said shell such that said lancet is propelled by said bias element through said lancet guide.
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Abstract
A blood sampling device includes a lancet having a skin piercing member disposed at an end thereof. The lancet is slidable within and releasably engaged with an elongated lancet guide that remains stationary with use of the device. A shell is axially movable relative to the lancet guide between a rest position and an actuate position, with the lancet being spring loaded within the lancet guide by movement of the shell from the rest position to the actuate position.
145 Citations
21 Claims
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1. A blood sampling device, comprising:
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a lancet having a skin piercing member disposed at an end thereof;
an elongated lancet guide, said lancet disposed within and axially movable relative to said lancet guide;
a shell, said lancet guide disposed at least partially within said shell with a first longitudinal end of said lancet guide extending from said shell and placed against a user'"'"'s skin in operation of said sampling device, said shell axially movable relative to said lancet guide from a rest position to an actuate position;
a bias element disposed between said lancet and a stop on said shell;
a releasable catch configured on said lancet guide, said catch engaged with said lancet in a rest position of said lancet, and a release member configured on said shell so as to contact and release said catch in said actuate position of shell; and
wherein in use of said device, forced movement of said shell relative to said lancet guide loads said bias element against said lancet until said release member contacts and releases said catch at said actuate position of said shell such that said lancet is propelled by said bias element through said lancet guide. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A blood sampling device, comprising:
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a lancet having a skin piercing member disposed at an end thereof;
an elongated lancet guide, said lancet releasably engaged with said lancet guide, said lancet guide remaining stationary in use of said device;
a shell axially movable relative to said lancet guide between a rest position and an actuate position, said lancet being spring loaded within said lancet guide with movement of said shell from said rest position to said actuate position; and
said lancet automatically releasing from said lancet guide at said actuate position of said shell. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21)
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Specification