Lancet assembly
First Claim
1. A lancet assembly configured to move from an initial position to an extended position to a fired position, the lancet assembly comprising:
- (a) a housing comprising an aperture and a rail disposed in the housing;
(b) a trigger comprising a body that at least partially extends into the housing;
(c) a spring having a tensioned state and an expended state;
(d) a pivot arm configured to rotate about a pivot point;
(e) a blade arm comprising a first end, a second end opposite the first end, and a puncturing instrument, wherein the first end of the blade arm is coupled with the pivot arm and wherein the puncturing instrument is housed within the housing when the assembly is in the initial position; and
(f) a slider coupled with the second end of the blade arm, wherein the slider is linearly slidable along the rail in a first direction and a second direction opposite the first direction, wherein movement of the slider positions the blade arm relative to the rail,wherein the trigger is translatable in a third direction within the housing, wherein the third direction is substantially perpendicular to the first direction and the second direction,wherein the assembly is configured such that activation of the trigger releases the spring from its tensioned state and;
moves the assembly from the initial position to the extended position, during which the blade arm translates longitudinally in the first direction and rotates about the pivot point, causing the puncturing instrument to extend through the aperture and exit the housing;
moves the assembly from the extended position to the fired position, during which the blade arm translates longitudinally in the second direction opposite and rotates about the pivot point, causing the puncturing instrument to retract through the aperture into the housing andwherein movement of the assembly from the initial position to the extended position and from the extended position to the fired position does not require a corresponding longitudinal movement of the aperture.
1 Assignment
0 Petitions
Accused Products
Abstract
Lancet assemblies for puncturing the skin and creating an incision. Upon activation, the disclosed assemblies are configured to move through a firing sequence in which a puncturing instrument extends through an aperture in the device and then is retracted back into a housing of the device and cannot be re-fired. The assemblies are designed so that the aperture in contact with the incision site does not move relative to the incision site during the firing sequence. Accordingly, the tolerance of the assembly is reduced and the reliability of the incisions created by the assembly, including the depth and width of such incisions, is increased.
51 Citations
17 Claims
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1. A lancet assembly configured to move from an initial position to an extended position to a fired position, the lancet assembly comprising:
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(a) a housing comprising an aperture and a rail disposed in the housing; (b) a trigger comprising a body that at least partially extends into the housing; (c) a spring having a tensioned state and an expended state; (d) a pivot arm configured to rotate about a pivot point; (e) a blade arm comprising a first end, a second end opposite the first end, and a puncturing instrument, wherein the first end of the blade arm is coupled with the pivot arm and wherein the puncturing instrument is housed within the housing when the assembly is in the initial position; and (f) a slider coupled with the second end of the blade arm, wherein the slider is linearly slidable along the rail in a first direction and a second direction opposite the first direction, wherein movement of the slider positions the blade arm relative to the rail, wherein the trigger is translatable in a third direction within the housing, wherein the third direction is substantially perpendicular to the first direction and the second direction, wherein the assembly is configured such that activation of the trigger releases the spring from its tensioned state and; moves the assembly from the initial position to the extended position, during which the blade arm translates longitudinally in the first direction and rotates about the pivot point, causing the puncturing instrument to extend through the aperture and exit the housing; moves the assembly from the extended position to the fired position, during which the blade arm translates longitudinally in the second direction opposite and rotates about the pivot point, causing the puncturing instrument to retract through the aperture into the housing and wherein movement of the assembly from the initial position to the extended position and from the extended position to the fired position does not require a corresponding longitudinal movement of the aperture. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A lancet assembly comprising:
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(a) a housing comprising an aperture and a rail disposed in the housing; (b) a blade arm comprising a first end and a second end opposite the first end, wherein a puncturing instrument extends from the second end; (c) a spring configured to move from a deformed state to an expended state; (d) a pivot arm coupled with the first end of the blade arm, wherein the pivot arm is configured to rotate within the housing about a pivot point as the spring moves from the deformed state to the expended state; (e) a slider coupled with the second end of the blade arm, wherein, as the spring moves from the deformed state to the expended state, the slider is configured to translate linearly along the rail within the housing in a first direction and a second direction opposite the first direction to extend the puncturing instrument through the aperture and out of the housing and to retract the puncturing instrument through the aperture and into the housing; and (f) a trigger configured to cause the spring to move from the deformed state to the expended state without requiring a corresponding longitudinal movement of the aperture, wherein the trigger is translatable in a third direction within the housing, wherein the third direction is substantially perpendicular to the first direction and the second direction. - View Dependent Claims (12, 13, 14, 15, 16, 17)
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Specification