Device and method for obtaining body fluid
First Claim
Patent Images
1. A device for obtaining a body fluid, the device comprising:
- a lancing element having a tip for puncturing skin of a body part;
a test field fluidically connected to the lancing element; and
an actuator coupled to the lancing element for moving the lancing element forwardly to penetrate the skin and backwardly to retract from the skin, wherein the actuator drives the lancing element forwardly at a penetration speed less than 0.7 m/s and backwardly at an average retraction speed between 0.001 and 0.01 m/s, and wherein the penetration speed is less than 100 times the average retraction speed, wherein the actuator drives the tip of the lancing element forwardly to a deepest puncture position between 1 and 2 mm below the surface of the skin, and the actuator retracts the tip of the lancing element from the deepest puncture position to the surface of the skin during a retraction period of between 200 ms and 800 ms.
3 Assignments
0 Petitions
Accused Products
Abstract
A device is disclosed for obtaining body fluid, in particular blood, comprising a lancing element having a tip for puncturing the skin of a body part and an actuator coupled with the lancing element for a forward and backward movement of the lancing element, where the lancing element can be inserted into the skin up to an optionally adjustable puncture position. The actuator is adapted to drive the lancing element forwardly to a penetration speed of at most 0.7 m/s when the lancing element penetrates the skin.
-
Citations
19 Claims
-
1. A device for obtaining a body fluid, the device comprising:
-
a lancing element having a tip for puncturing skin of a body part; a test field fluidically connected to the lancing element; and an actuator coupled to the lancing element for moving the lancing element forwardly to penetrate the skin and backwardly to retract from the skin, wherein the actuator drives the lancing element forwardly at a penetration speed less than 0.7 m/s and backwardly at an average retraction speed between 0.001 and 0.01 m/s, and wherein the penetration speed is less than 100 times the average retraction speed, wherein the actuator drives the tip of the lancing element forwardly to a deepest puncture position between 1 and 2 mm below the surface of the skin, and the actuator retracts the tip of the lancing element from the deepest puncture position to the surface of the skin during a retraction period of between 200 ms and 800 ms. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
-
-
15. A method for obtaining body fluid, comprising:
-
a) providing a lancing element comprising a tip for puncturing skin of a body part and an actuator coupled with the lancing element; b) actuating the actuator for moving the lancing element; c) moving the lancing element forwardly at a penetration speed of less than 0.7 m/s to penetrate the skin to a deepest puncture position between 1 and 2 mm below the surface of the skin; and d) moving the lancing element backwardly to retract from the skin at an average retraction speed between 0.001 and 0.01 m/s and wherein the penetration speed is less than 100 times the average retraction speed, and the actuator retracts the tip of the lancing element from the deepest puncture position to the surface of the skin during a retraction period of between 200 ms and 800 ms. - View Dependent Claims (16, 17, 18)
-
-
19. A device for obtaining a body fluid, the device comprising:
-
a lancing element having a tip for puncturing skin of a body part; a test field fluidically connected to the lancing element; and an actuator coupled to the lancing element for moving the lancing element forwardly to penetrate the skin and backwardly to retract from the skin, wherein the actuator drives the lancing element forwardly at a penetration speed less than 0.7 m/s and backwardly at an average retraction speed between 3 and 9 mm/s, wherein the penetration speed is less than 100 times the average retraction speed.
-
Specification