Lancet device

A lancet device, comprising:

• a housing comprising an internal actuation member;
• a shield at least partially disposed within the housing and movably associated therewith;
• a lancet disposed in the housing and axially movable through the shield and comprising a puncturing element, the lancet adapted for axial movement between an initial position wherein the puncturing element is disposed within the housing and a puncturing position wherein the puncturing element extends through a forward opening in the shield for a puncturing procedure;
• a drive spring disposed between a rearward end of the housing and the lancet for biasing the lancet to the puncturing position;
• and
• a rotation element, the lancet in interference engagement with the rotation element in the initial position;
• wherein axial movement of the shield into the housing causes the actuation member to rotate the rotation element relative to the lancet to a release position releasing the interference engagement between the lancet and rotation element thereby permitting the drive spring to bias the lancet through the shield to the puncturing position;
• and
• wherein the actuation member comprises a cam element with a cam surface and the rotation element comprises a guide plate defining a cam guide recess for receiving the cam element, and wherein the axial movement of the shield into the housing causes the cam surface to engage the cam guide recess and impart rotational motion to the guide plate.

A lancet device, comprising:

• a housing comprising an internal actuation member;
• a shield at least partially disposed within the housing and movably associated therewith;
• a lancet disposed in the housing and axially movable through the shield and comprising a puncturing element, the lancet adapted for axial movement between an initial position wherein the puncturing element is disposed within the housing and a puncturing position wherein the puncturing element extends through a forward opening in the shield for a puncturing procedure;
• a drive spring disposed between a rearward end of the housing and the lancet for biasing the lancet to the puncturing position;
• and
• a rotation element, the lancet in interference engagement with the rotation element in the initial position;
• wherein axial movement of the shield into the housing causes the actuation member to rotate the rotation element relative to the lancet to a release position releasing the interference engagement between the lancet and rotation element thereby permitting the drive spring to bias the lancet through the shield to the puncturing position;
• and
• wherein the actuation member comprises a cam element with a cam surface and the rotation element comprises a cam follower, and wherein the axial movement of the shield into the housing causes the cam surface to engage the cam follower and impart rotational motion thereto at least until the cam follower reaches the release position.