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 in initial abutting interference engagement with one another in a lancing direction of user force application; 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 overcomes the initial abutting interference engagement and the rear housing portion engages the lancet structure thereby causing the lancet structure to move substantially in conjunction with the rear housing portion to expose the puncturing element through the forward housing portion;
wherein upon further longitudinal movement of the rear housing portion with respect to the forward housing portion, the rear housing portion disengages from the lancet structure and 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 and locking the front housing portion with the rear 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.
25 Citations
17 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 in initial abutting interference engagement with one another in a lancing direction of user force application; 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 overcomes the initial abutting interference engagement and the rear housing portion engages the lancet structure thereby causing the lancet structure to move substantially in conjunction with the rear housing portion to expose the puncturing element through the forward housing portion; wherein upon further longitudinal movement of the rear housing portion with respect to the forward housing portion, the rear housing portion disengages from the lancet structure and 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 and locking the front housing portion with the rear housing portion. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. 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 and in initial abutting interference engagement with one another in a lancing direction of user force application, the first housing portion including structure for abutting engagement with a corresponding abutment 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 overcomes the initial abutting interference engagement and 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 corresponding abutment surface of the lancet structure 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; and wherein one of the first housing portion and second housing portion includes a locking structure for locking engagement with the other of the first housing portion and second housing portion as a result of said axial movement, thereby preventing re-exposure of the puncturing element through the second housing portion and locking the first housing portion with the second housing portion. - View Dependent Claims (15, 16, 17)
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Specification