The present invention includes a system for withdrawing body fluids. The system includes a drive unit having a plunger which is moved from a resting position into a lancing position in order to carry out a lancing process and a lancing unit containing a lancet with a needle. The plunger and lancet are coupled together by a form fit in order to carry out a lancing process. The invention additionally concerns a method for temporarily extending a needle from a device for withdrawing body fluid as well as a lancing unit that can be attached to the drive unit.

A precise arterial blood sampling device comprising a pen cap and a pen container which comprises a front pen container and a rear pen container, wherein: a first piezoelectric sensor sensing column is horizontally fixed to the front pen container, a horizontal slide rail is provided on the front pen container, a second piezoelectric sensor sensing column is provided on the horizontal slide rail, splines are provided on the second piezoelectric sensor sensing column, an elongated groove is formed on the front pen container, and a sensing column extending/retracting control wheel fitting with the splines is provided in the elongated groove; and a control chip, a needle ejection mechanism, a display screen, and a switch are provided inside the rear pen container, and the first piezoelectric sensor sensing column, the second piezoelectric sensor sensing column and the display screen are connected to the control chip respectively.

A lancing device includes: a cover section, a part of which is provided with an opening; a main body held on the cover section and configured to be movable in a predetermined direction from the opening relative to the cover section; a lancing unit which is launched in the predetermined direction; and an operating section configured to launch the lancing unit when the operating section is pushed by applying a force in the predetermined direction, wherein the lancing unit is launched when the force is applied to the operating section in the predetermined direction with regulating a movement of the main body in the predetermined direction, and the main body moves, instead of pushing the operating section, by applying the force in the predetermined direction without regulating the movement of the main body in the predetermined direction is disclosed.

A lancing device includes a housing, a lancing unit capable of reciprocating relative to the housing, an elastic member for causing the lancing unit to reciprocate, and a resistance generator for applying resistance to the lancing unit in motion. The reciprocating motion of the lancing unit includes a puncture section or interval and a retreat section following the puncture section. The puncture section includes a puncture point at which a lancing element of the lancing unit can prick the skin of a human subject, for example. The resistance generator is configured to apply a greater resistance to the lancing unit in the retreat section than in the puncture section.

A lancet driver is provided wherein the driver exerts a driving force on a lancet during a lancing cycle and is used on a tissue site. The driver comprises of a drive force generator for advancing the lancet along a path into the tissue site, and a manual switch for a user interface input.

A lancing device and a method for using the lancing device includes a plunger mechanism having a permanent magnet housed therein. The lancing device includes a movable element having at least one attracting object and at least one repelling object. The attracting object attracts the permanent magnet to move the plunger into a retracted position. The repelling object repels the permanent magnet to move the plunger into a lancing position to pierce the skin of a test subject. The use of the permanent magnet in the plunger mechanism reduces or eliminates multiple punctures due to plunger bounce or oscillation that can occur while a body fluid sample is being drawn.

Skin stimulus arrangements are described for creating a stimulus in the skin in the vicinity of a treatment or wound site to alleviate the perception of pain. First and second textured surfaces are provided for making contact with the skin, with the surfaces being moved to create a stimulus which alleviates the perception of pain. The movement may be linear, rotary or a combination of both, and just a single textured surface may be provided.

A lancing device including a latch that pivots between a non-blocking position allowing a lancet carrier and a lancet to advance and retract through a first forward and reverse lancing stroke and a blocking position preventing further/excess/secondary oscillation of the lancet carrier and lancet. The pivotal latch can pivot about an axis perpendicular (e.g., for an L-shaped latch) or parallel/coaxial (e.g., for a sleeve latch) to the advancement and retraction motion of the lancet carrier and lancet.

An apparatus for insertion of a medical device in the skin of a subject is provided, as well as methods of inserting medical devices. Embodiments include removing a substantially cylindrical cap from an inserter to expose a substantially cylindrical sleeve, removing a cover from a substantially cylindrical container holding sensor components, and fitting the sensor components into the inserter.

A vacuum assisted lancing system for blood extraction can include a tubular body having a vacuum chamber, a lancing mechanism configured to removably couple with a lance, a vacuum mechanism including a piston slideably coupled within the body, a release mechanism for selectively holding the vacuum mechanism in an energized state, and an opening for allowing fluid communication between the vacuum chamber and an atmosphere surrounding the vacuum chamber. The system can include structure for selectively commencing dissipation of the vacuum and a fixed or adjustable depth controller. A method of manipulating a surface for blood extraction can include coupling the lancing system to the surface, blocking the opening, creating a vacuum, moving the lance coupler from a first position distal from the surface to a second position proximal to the surface, maintaining the vacuum for a period of time, and commencing dissipation of the vacuum by unblocking the opening.