Method and apparatus for penetrating tissue
First Claim
1. A body fluid sampling system for use on a tissue site, the system comprising:
- an electrically powered drive force generator, wherein the drive force generator is selected from a voice coil drive force generator and a rotary voice coil drive force generator;
a penetrating member operatively coupled to said force generator, said force generator moving said penetrating member along a path out of a housing having a penetrating member exit, into said tissue site, stopping in said tissue site, and withdrawing out of said tissue site;
a sample chamber with capacity of less than 1 μ
L positioned to receive fluid from a wound created by said penetrating member; and
an analyte detecting member configured to determine a concentration of an analyte in the fluid using a sample of less than 1 μ
L of the fluid in the sample chamber.
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Accused Products
Abstract
These and other objects of the present invention are achieved in a body fluid sampling system for use on a tissue site that includes an electrically powered drive force generator. A penetrating member is operatively coupled to the force generator. The force generator moves the member along a path out of a housing having a penetrating member exit, into the tissue site, stops in the tissue site, and withdraws out of the tissue site. An analyte detecting member is positioned to receive fluid from a wound created by the penetrating member. The detection member is configured to determine a concentration of an analyte in the fluid using a sample of less than 1 μL of the fluid.
12 Citations
11 Claims
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1. A body fluid sampling system for use on a tissue site, the system comprising:
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an electrically powered drive force generator, wherein the drive force generator is selected from a voice coil drive force generator and a rotary voice coil drive force generator; a penetrating member operatively coupled to said force generator, said force generator moving said penetrating member along a path out of a housing having a penetrating member exit, into said tissue site, stopping in said tissue site, and withdrawing out of said tissue site; a sample chamber with capacity of less than 1 μ
L positioned to receive fluid from a wound created by said penetrating member; andan analyte detecting member configured to determine a concentration of an analyte in the fluid using a sample of less than 1 μ
L of the fluid in the sample chamber. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification