Push activation lancet device
First Claim
1. A lancet device comprising:
- a lancet structure comprising a puncturing element;
a housing comprising a rear housing portion and a forward housing portion longitudinally movable with respect to each other; and
a lancet retention member for maintaining the puncturing element within the housing;
wherein longitudinal movement of the rear housing portion with respect to the forward housing portion causes the lancet structure to move substantially in conjunction with the rear housing portion, thereby causing exposure of the puncturing element through the forward housing portion;
wherein the lancet retention member retracts the puncturing element within the forward housing portion;
and wherein the rear housing portion includes a locking structure for locking engagement with the forward housing portion as a result of the longitudinal movement, thereby preventing re-exposure of the puncturing element through the forward housing portion.
1 Assignment
0 Petitions
Accused Products
Abstract
A lancet device including a lancet having a puncturing element disposed within a two-piece housing including a rear housing and a forward housing. Relative axial movement of the rear housing toward the forward housing directly drives the lancet to a puncturing position wherein the puncturing element extends through the forward housing. During such relative axial movement, a drive structure applies a driving force against the lancet and disengages from the lancet based on deflecting structure in the housing, thereby releasing the driving force applied to the lancet. A retention member then retracts the lancet back within the housing, with the drive structure maintained disengaged from the lancet to prevent re-use.
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Citations
20 Claims
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1. A lancet device comprising:
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a lancet structure comprising a puncturing element;
a housing comprising a rear housing portion and a forward housing portion longitudinally movable with respect to each other; and
a lancet retention member for maintaining the puncturing element within the housing;
wherein longitudinal movement of the rear housing portion with respect to the forward housing portion causes the lancet structure to move substantially in conjunction with the rear housing portion, thereby causing exposure of the puncturing element through the forward housing portion;
wherein the lancet retention member retracts the puncturing element within the forward housing portion;
and wherein the rear housing portion includes a locking structure for locking engagement with the forward housing portion as a result of the longitudinal movement, thereby preventing re-exposure of the puncturing element through the forward housing portion. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A lancet device comprising:
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a lancet structure comprising a puncturing element;
a housing comprising a first housing portion and a second housing portion axially movable with respect to each other, the first housing portion including structure for abutting engagement with a corresponding surface of the lancet structure, the second housing portion including a guiding surface adapted for engagement with the abutting structure of the first housing portion during axial movement of the first housing portion and the second housing portion with respect to each other; and
a lancet retention member for maintaining the puncturing element of the lancet structure within the housing;
wherein axial movement of the first housing portion with respect to the second housing portion causes the abutting structure of the first housing portion to move the lancet structure to a position wherein the puncturing element extends through a forward end of the second housing portion due to the abutting engagement between the abutting structure and the lancet structure, and causes the abutting structure to engage the guiding surface of the second housing portion to disengage the abutting structure from the abutment surface upon extension of the puncturing element through the forward end of the second housing portion, thereby permitting the lancet retention member to retract the puncturing element within the forward end of the second housing portion. - View Dependent Claims (14, 15, 16)
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17. A method of actuating a lancet device comprising:
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providing a lancet device comprising a housing having a first housing portion and a second housing portion in frictional interference with respect to each other, a lancet structure including a puncturing element disposed within the housing, and a lancet retention member for maintaining the puncturing element within the housing; and
applying pressure between the first housing portion and the second housing portion at a force sufficient to overcome the frictional interference between the first housing portion and the second housing portion, thereby causing the first housing portion and the second housing portion to move longitudinally with respect to each other such that an abutting surface of the first housing portion moves the lancet structure substantially in conjunction with the first housing portion to cause the puncturing element to extend through a forward end of the second housing portion, and further causing the abutting surface to disengage from the lancet structure, thereby permitting the lancet retention member to retract the puncturing element to a position retained within the housing after extending through a forward end of the second housing portion. - View Dependent Claims (18, 19, 20)
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Specification