DE212007000052U1 - Hauteinstechvorrichtung - Google Patents

Abstract

Skin piercing device (10), with:
a housing (12) having an opening (22) therein;
a lancet (28) provided inside the housing (12),
a lancet cap (34) covering the tip of a needle (32) of the lancet (28), wherein the needle (32) and the lancet cap (34) are disposed along a path for firing within the housing (12) and wherein the opening (22) is also located along the path for firing,
a drive means (46, 54, 62, 66) within the housing (12) which is movable substantially in the direction of the path for firing, and
a spring (40) coupled between the drive means (46, 54, 62, 66) and the lancet needle (32),
wherein the movement of the drive means (46, 54, 62, 66) in the direction causing the spring (40) to compress is disengaged from the cap (34) in front of the lancet needle (32) and out of the path for firing emotional...

Description

The The present invention relates to a skin puncture device and in particular - but not necessarily - one Skin piercing device for use in taking a blood sample. The skin puncture device may also be used as a device or device to be pierced in the skin.

In in the fields of medical and related diagnostics and Often testing it is necessary to take small blood samples from an examination subject or a person for purposes of testing and analyzing the To draw blood. A common one The procedure is to use a small needle around the skin to pierce at a place where blood vessels near the surface are located. The combination of such a needle with a holding device becomes common referred to as a lancet. To infections and impurities To avoid such devices or lancets are preferred for the one-time use designed to be disposed of afterwards. You need to Therefore, be formed in a compact manner to the user to enable to carry a plurality of such lancets with it. They also need to be in their production economical be.

A number of such disposable lancets or disposable lancets are currently known in the marketplace. For example, the so-called Unistik ^TM known by Owen Mumford, Ltd. is known. (Woodstock, UK) is manufactured and marketed. The current designs and designs provide an injection molded plastic housing within which a short and spring-loaded needle is mounted. In the housing, a trigger or trigger is formed which, when depressed, triggers the needle or lancet causing the tip to be shot out through an opening in the housing. Some of the current designs require an operator or surgeon to bias the spring before firing. In other embodiments, the lancet devices and needles are already provided in a stretched form. It is also generally necessary for users to remove a cap or protective cap from the front of the device or from the needle tip prior to firing. Users must therefore take at least two steps, sometimes even three, to take a blood sample.

It Therefore, there is a desire, a lancet device or a needle device to make it easier to use and operate are, as current forms of interpretation. Of course, each one has to be improved Design form high standards, eg. B. in terms of manufacturing costs. Of Another must be high reliability exist, thereby ensuring that will give users the lancet devices or needle devices be provided in an operational state. The present Invention was created based on these aspects.

The The objects underlying the invention are in a skin piercing device according to the invention with the Characteristics of claim 1 or claim 19 solved. further developments are in the dependent claims Are defined.

According to a first aspect of the present invention there is provided a skin piercing device comprising:
a housing with an opening therein,
a lancet located inside the housing,
a lancet cap covering the tip of a lancet needle, the needle and the lancet cap being disposed, aligned or aligned along a path for firing or firing within the housing, and wherein the apertures are also aligned, aligned or aligned with respect to the path of firing is aligned,
a drive means within the housing, which is movable in the direction of the path for firing substantially, and
a spring which is coupled or fixed between the drive means and the needle of the lancet,
wherein movement of the drive means in that direction causes the spring to compress, disengage the cap from the lancet needle and move it out of the path for firing, and release or release the spring to guide the lancet along the exposed path to the lancet Firing to advance to a point where the tip of the lancet needle protrudes from the opening of the housing.

It One advantage is that this pre or device is easy to use is, it can be used in particular with one hand. The Most of the components and components of the device may be made Plastic materials are formed, causing the further Advantage shows that the production is simple and at low cost can be done.

Preferably, the trigger mechanism or trigger mechanism is movable relative to the housing. It is further preferred that the trigger mechanism or trigger mechanism is telescopically mounted or mounted in the housing. The triggering mechanism or triggering mechanism can be activated by squeezing or pushing in the housing is actuated into it.

It it is preferred that the lancet cap cover the needle tip, and that before pressing the trigger mechanism or trigger mechanism. Pressing the trigger mechanism or trigger mechanism can then cause the guide device remove the cap from the needle from the path of movement out of the needle. It is another advantage of this process automatically exposes the lancet needle. The needle is in front of the Introduced into the device sterilized. The cap can be at the Manufacture be attached to the needle. The lancet can before be sterilized in the assembly, resulting in the advantage that no further sterilization of the needle or any other component or another component of the device is necessary, so that the device after assembly for immediate use suitable is.

Preferably is the lancet cap with the trigger mechanism or trigger mechanism coupled or connected. In one embodiment, the lancet cap is by means of one or more flexible elements with the trigger mechanism or trigger mechanism coupled or connected. The one or more flexible elements can elongated or oblong be formed, each having a first end thereof with the trigger mechanism or trigger mechanism coupled with a second end of it the lancet cap is coupled.

at an embodiment has the guide device complementary Embodiments, structures, elements or shapes in relation to the Interior of the housing and in terms of the arrangement of the trigger or trigger mechanism which can be engaged when the trigger mechanism through the housing emotional. The complementary ones Embodiments, structures, elements or shapes of the trigger arrangement can provided at the second end of the one or more flexible elements be. The complementary ones Designs, structures, elements or shapes can be wedges, corners or ramps and corresponding wedge, corner or ramp engagement elements. Preferably wedges or corners are provided on or in the interior of the housing, which can be brought into engagement with wedge or corner engagement shapes, that at the second end of the one or more of the flexible elements are provided. It is advantageous that the housing and the trigger mechanism can be made in a simple manner can, z. B. from injection molded plastic materials, in particular the discussed Form designs or shapes with the wedges, corners or edges.

Of the tripping or trigger mechanism preferably has a trigger button or trigger button operated by a user or operator can. Further, it is preferable that the release button or trigger button itself outside of the housing located. This makes the operation of the device easy, because a user or surgeon just just the trigger mechanism or trigger in the housing has to push in, to operate the device. It can be holders, Handles or grip areas on the housing be provided (designed as part of the housing or there as well otherwise appropriate) to simplify the operation of the device or to support.

The Spring may preferably be designed and arranged in such a way so that they complete the lancet inside the case withdraws after the device was fired once. The spring is preferably a flat spring, platform spring or leaf spring (platform spring).

The Spring may be at least partially pre-pressurized to ensure that the lancet is triggered or triggered with sufficient force is going to get out of the opening stand out and stab in the skin of a person. The partial pre-loaded spring can be compressed or pulled apart be. The leaf spring can be made in one piece be formed with the trigger assembly, in particular during the corresponding manufacturing process.

The Device or device may be provided with a retention mechanism for the lancet be formed, which is formed and arranged to substantially to prevent the movement of the lancet through the housing for so long until the trigger mechanism or the trigger has been fully actuated. The retention mechanism for the lancet may be cooperating or cooperating components or components inside the case and on the lancet.

at an embodiment The device or device further comprises a locking mechanism formed, the trigger mechanism or trigger mechanism relative to the housing and inside the case to lock, in a predetermined position or position, if the fore- or Setup once triggered or was triggered. This supports preventing accidents in connection with piercing the skin and thus problems with respect to infection or contamination and the like.

According to a second aspect of the present invention, a housing is provided with
an opening in it and with a first set of Elements or structures for blocking (locking formations),
a lancet disposed within the housing and having a second set of locking elements or elements for releasable engagement with the first set of locking elements;
a lancet cap or cap for covering the tip of a needle of the lancet, wherein the needle and the lancet cap are disposed along a path for firing within the housing and wherein the opening is also disposed, aligned or aligned with respect to the path for firing .
a guide track within the housing which extends substantially in the direction of the path for firing,
a drive means disposed or mounted in the guide track and having elements or structures for engaging the lancet cap and structures or elements for triggering or releasing the second set of elements or structures for blocking the first set of elements or structures for blocking,
a spring which is coupled or connected between the lancet and the drive mechanism, and
a member or structure for deflecting the lancet cap which are disposed adjacent the lancet cap between the lancet cap and the opening.

To the better understanding of the present invention and to show how these relate to executed on their effect Reference will now be made, by way of example, to the accompanying drawings.

1 is a perspective view of a main piercing device.

2 is a perspective view of the underside of an upper housing part of the Hauteinstechvorrichtung 1 ,

3 is a perspective view of the Hauteinstechvorrichtung 1 , without the upper housing part.

4 shows a cross section through the Hauteinstechvorrichtung 1 in a horizontal plane.

5 is a cross-sectional view through the Hauteinstechvorrichtung 1 in a vertical plane.

6 is a perspective view of the Hauteinstechvorrichtung 1 with a trigger or trigger mechanism of the device, in a partially pressed into the housing shape.

7 shows a cross section through the Hauteinstechvorrichtung 6 ,

8th is a partial perspective view of the device 1 after triggering or triggering the device.

With reference to 1 to 5 a skin puncture device is shown which is designed for piercing or piercing the skin of a person, for. For providing a small blood sample. Typically, the device is used to pierce the area, spot, or tip of a person's finger, leaving a small spot or drop of blood on the finger. This drop or stain can then z. B. recorded or collected using a test strip, z. For use within a measurement or test. The in the 1 to 5 The device shown is in a state suitable for immediate use and thus in a starting position prior to actuation of the device.

The skin piercing device 10 has a housing 12 made of injection-molded plastic. The housing 12 is formed by an upper housing part 14 and a lower housing part 16 , The reference to "below" and "above" with respect to the components or components has been chosen for simplicity and refers to the orientation of the embodiments as illustrated in the figures. The underside of the upper housing part 14 is with protruding pins, bolts or pins 18 formed in recesses 20 be included in the lower housing part 16 is formed, and that around the housing parts 14 . 16 connect with each other and secure each other. The device is adapted to be operated with one hand, one end (the "needle end") being held against the skin, while the other end (the "trigger end") is actuated by the operator or operator to close the device trigger or trigger to pierce the skin of the person.

The upper and lower housing parts 14 . 16 are with semicircular recesses in the region of the needle end of the device 10 formed, which, when the housing parts 14 . 16 put together, combine with each other and form a circular opening 22 complement or connect, from which the needle can protrude. The lower and upper housing parts 14 . 16 are with handles or grip areas 24 trained to the operator or operator in the operation and use of the device 10 to support. In Ge housing 12 is a trigger 26 or trigger mechanism 26 provided, at the trigger end of the device 10 , The trigger 26 has a front surface or button 27 , which by the surgeon or operator by pushing into the housing 12 can be operated.

The 3 and 4 show the device 10 without the upper housing part 14 , thereby illustrating how the interior of the device interacts.

The lancet 28 has a lancet body 30 and a needle 32 which is formed on and within one end thereof. The needle 32 whose tip is towards the needle end of the device 10 is aligned towards is from a cap 34 covered to maintain sterility prior to use. The lancet body 30 has a rounded head 36 , from or from which the needle 32 protrudes. The lancet cap 34 has two flexible fingers 38 or lever 38 on which the lancet body head 36 wrap or encase to secure or secure it prior to use.

At the other end of the lancet body 30 and that which is the trigger end of the device 10 is closest, is a Vorbeaufschlagungseinrichtung 40 (Here, a spring or leaf spring is shown) by means of a coupling 42 attached. In the embodiment shown, the coupling 42 an enlarged end or enlarged area 42a of the lancet body 30 on which one within a serving 42b or an inclusion 42b are secured, in turn, with the end of the spring 40 are coupled. The other end of the spring 40 is on the inner surface 44 the trigger button 27 or release button 27 appropriate.

There are two sections 46 , Legs 46 or thighs 46 from the inner surface 44 the trigger button 27 on the needle end of the device 10 to. The trigger sections 46 ends in outward curved or curved sockets 48 , Bases 48 or feet 48 , The trigger feet 48 are designed to have angled or inclined surfaces or surfaces 49a own the inward on the lancet 28 to show or are directed towards this. In the starting position or starting position (as shown), the outer surfaces or surfaces are based 49b the trigger feet 48 on inwardly curved or curved sockets 50 , Bases 50 or feet 50 of the lower housing part 16 or toast them. The feather 40 may be slightly biased (ie, compressed, for example) to the trigger button 27 from the case 12 to push on and to cause the feet 48 . 50 support or abut the device 10 in a condition suitable for immediate use.

So that the lancet 28 is not triggered or triggered before this is desired or necessary to do is the lancet body 30 furthermore with two arms 51 or levers 51 trained on each side of the coupling 42 are formed. The poor 51 or lever 51 extend to the inner surface 44 the trigger button 27 to and ends in outwardly curved or curved projections 51a , These projections 51a or projections 51a have outer surfaces or surfaces 51b which are formed outwardly angled, on the walls of the lower housing part 16 to. The lower housing part 16 is with inwardly protruding or protruding stop elements 52 formed, attached to the inner surfaces or surfaces 51c the projections 51a supported in the starting position or abut in the starting position to this. The stop elements 52 prevent a premature forward movement of the lancet 28 , In the embodiment shown, the recesses or receptacles 20 of the lower housing part within the stop elements 52 or in connection with them.

The inner surface or surface 44 the trigger button 27 is also flexible with arms 54 or levers 54 educated. The flexible arms 54 extend from the inner surface or surface 44 the trigger button 27 on the needle end of the device 10 to. The flexible arms 54 or lever 54 end and combine as a plate or a tile 56 , The plate 56 acts as a carrier for attaching the lancet cap 34 , In the embodiment shown, the lancet cap is 34 with the carrier 56 by means of pins 58 , Cones 58 or bolt 58 attached to the inside of openings 60 in the lancet cap 34 are localized. Upwardly extending ramps 62 are on each side of the vehicle 56 provided, with the ramps 62 on the needle end of the device 10 tapered or tapered are formed.

The base of the lower housing part 16 indicates near or near the needle end of the device 10 a downward surface or surface 64 on. The slope, slope or drop of the area or inclined area 64 extends from a location near the location of the lancet cap 34 when the device is 10 in the starting position, to the needle end of the device 10 out.

How out 2 can be read, has the bottom of the upper housing part 14 downwards protruding corners 66 or wedges 66 on. The corners 66 or wedges 66 taper from the needle end of the upper housing part 14 on the trigger end of the upper housing part 14 to. The gradient the corners 66 or wedges 66 (if the upper housing part 14 in the in 1 Example shown), corresponds to that of the inclined surface or surface of the lower housing part 16 , This results z. B. also from the 5 ,

Finally, the trigger or trigger legs or levers 46 further outwardly projecting locking or Aufsperrschenkel or levers 68 (lock-out leg). This Aufsperrschenkel 68 or catch lever 68 on or on the trigger legs or levers 46 near or near the trigger button 27 are provided and arranged, diverge or run away from the trigger legs 46 , on the trigger head 27 to.

As related to the device from the 1 to 5 and described in the above passages, the described device is in a configuration ready for use. The operation of the device 10 will now be with reference to the 6 - 8th described.

When a user or surgeon presses the trigger button or release button 27 starts, becomes the trigger 26 or the trigger 26 in the case 12 pressed in and the spring 40 is compressed like that in 6 is shown. The movement of the trigger 26 in the case 12 It also has a movement of the flexible legs 54 further into the housing 12 into it, causing the lancet cap 34 from the head 36 of the lancet body is removed, leaving the needle 32 is exposed. After the lancet 28 was released from the cap and the trigger 26 further into the housing 12 was pressed in, grab the corners 66 or wedges 66 of the upper housing part 14 with the ramps 62 the carrier plate 56 one. The trigger legs 54 bend through and the path of movement of the lancet carrier plate 56 runs along and down with the inclined surface or surface 64 the base of the lower housing part 16 , It is exploited that in this operating condition the needle 32 with the opening 22 is aligned and that the lancet cap 34 from the path of movement of the needle 32 was removed. The continuous pressing of the trigger 26 compresses the spring 40 to store energy in it. By supporting or abutting the lancet arm projections 51a and the lower housing stop elements 52 will prevent the lancet 28 is fired. The device 10 is now armed or armed and can be fired. It is also exploited that the engagement between the ramps 62 and the corners 66 or wedges 66 the device 10 being able to be held up with the underside in use.

By pressing the trigger button continuously 27 become the inclined or angled surfaces 49a the trigger feet 48 brought into contact with the inclined or angled surfaces or surfaces 51b the lancet arm protrusions 51a , This contact forces or pushes the lancet arms 51 inwardly and towards each other until the lancet arm protrusions 51a from the lower housing part stop elements 52 are liberated. In this state, the spring expands 40 in a fast way, releasing the stored energy. This will cause the lancet 28 through the housing 12 through which causes the needle 32 out of the opening 22 protrudes or protrudes and thereby pierces the skin of a person. The head 36 of the lancet body 30 is brought into contact with the inner surface or surface of the housing 12 which the opening 22 surrounds. This and the thickness of the case 12 which is the opening 22 can be selected such that the distance or the distance by which the needle 32 out of the opening 22 protruding or protruding is limited, thereby preventing the needle 22 the skin penetrates too deeply.

In this condition is the spring 40 Extensively overstretched or overstretched, leaving the spring 40 retreating to the needle 32 in the opening 22 retract through, namely back into the housing 12 like that in 8th is shown. This will cause the needle 32 inside the case 12 the device 10 secured after use, to prevent puncture injuries related to the skin through the needle 32 arise. 8th further shows that after using the trigger 26 inside the case 12 This ensures that the trigger legs 46 within the lower housing part 16 of the housing 12 being held. In other words, that means the trigger feet 48 on the lower housing part stop elements 52 abut and that the Aussperrschenkel or Sperrschenkel 68 to the lower housing feet abut. So if the skin piercing device 10 Once used or has been, this can not be armed again by this without the device 10 completely disassembled. If the upper housing part 14 from the lower housing part 16 is removed to the internal components or components of the device 10 It is not possible to expose the trigger 26 in any way relative to the housing 12 to move.

The device 10 may be formed with a display device (not shown) which clearly indicates to the user or operator that the device 10 already fired and therefore has to be disposed of. It should be noted that the trigger 26 in the lower part ment remains locked when the device 10 was fired once.

The needle 32 is sterile when inside the lancet cap 34 is embedded. It also does not touch any other part of the device 10 before the skin is punctured. There is therefore no need for the housing 12 or other parts or components inside the case 12 are intended to sterilize or seal, except the needle 32 and the cap surrounding the needle 34 ,

To ensure that the spring 40 the lancet 28 fired with a sufficient force, leaving the latter out of the opening 22 protrudes and pierces the skin of a person, the spring can 40 before assembling the device 10 be at least partially biased.

Of the A person of ordinary skill in the art will be aware of various modifications the described embodiments To run can, without departing from the spirit of the invention.

Claims (19)

Skin piercing device ( 10 ), comprising: a housing ( 12 ) with an opening ( 22 ) in it, a lancet ( 28 ), which within the housing ( 12 ), a lancet cap ( 34 ), which is the tip of a needle ( 32 ) of the lancet ( 28 ), whereby the needle ( 32 ) and the lancet cap ( 34 ) along a path for firing within the housing ( 12 ) are arranged and wherein the opening ( 22 ) is also arranged along the path for firing, a drive device ( 46 . 54 . 62 . 66 ) within the housing ( 12 ) which is movable substantially in the direction of the path for firing, and a spring ( 40 ), which between the drive device ( 46 . 54 . 62 . 66 ) and the lancet needle ( 32 ), in which the movement of the drive device ( 46 . 54 . 62 . 66 ) in the direction causes the spring ( 40 ) that compresses the cap ( 34 ) in front of the lancet needle ( 32 ) and is moved out of the path to fire and that the spring ( 40 ), thereby causing the lancet ( 28 ) to move along the exposed path for firing to a position at which the tip of the lancet needle ( 32 ) from the opening ( 22 ) in the housing ( 12 protruding). Contraption ( 10 ) according to claim 1, further comprising a triggering mechanism ( 26 ), which relative to the housing ( 12 ) is movable, whereby upon actuation of the trigger mechanism ( 26 ) causes the drive device ( 46 . 54 . 62 . 66 ) through the housing ( 12 ) emotional. Contraption ( 10 ) according to claim 2, wherein the triggering mechanism ( 26 ) telescopically in the housing ( 12 ) is attached. Contraption ( 10 ) according to claim 3, wherein the triggering mechanism ( 26 ) by pressing into the housing ( 12 ) is pressed. Contraption ( 10 ) according to one of the preceding claims, in which the drive device ( 46 . 54 . 62 . 66 ) a coupling between the lancet cap ( 34 ) and the triggering mechanism ( 26 ) having. Contraption ( 10 ) according to claim 5, wherein the lancet cap ( 34 ) to the triggering mechanism ( 26 ) is coupled by one or more flexible elements. Contraption ( 10 ) according to claim 6, wherein said one or more flexible elements are elongated, a first end thereof being formed with said trigger mechanism ( 26 ) and a second end thereof with the lancet cap ( 34 ) is coupled. Contraption ( 10 ) according to one of the preceding claims, in which complementary elements in the interior of the housing ( 12 ) and on the drive device ( 46 . 54 . 62 . 66 ) are provided, wherein the elements are engageable with each other when the drive means ( 46 . 54 . 62 . 66 ) through the housing ( 12 ) emotional. Contraption ( 10 ) according to claim 8, in which the complementary elements of the drive device ( 46 . 54 . 62 . 66 ) are provided at the second end of the one or more flexible elements. Contraption ( 10 ) according to one of claims 8 or 9, in which the complementary elements have corners or ramps or ramp-engaging elements. Contraption ( 10 ) according to claim 10, wherein the corners on or inside the housing ( 12 ) are provided, which are engageable with corner engagement elements, which in turn are formed at the second end of the one or more flexible elements. Contraption ( 10 ) according to one of the preceding claims, in which the triggering mechanism ( 26 ) a trigger button ( 27 ) operable by an operator. Contraption ( 10 ) according to claim 12, wherein the trigger button ( 27 ) outside the housing ( 12 ) is provided. Contraption ( 10 ) according to one of the preceding claims, in which the spring ( 40 ) is designed to hold the lancet ( 28 ) completely into the housing ( 12 ) withdraws when the device ( 10 ) was fired once. Contraption ( 10 ) according to one of the preceding claims, in which the spring ( 40 ) is a leaf spring. Contraption ( 10 ) according to one of the preceding claims, further comprising a lancet retention device arranged to facilitate movement of the lancet ( 28 ) through the housing ( 12 ) so long essentially to prevent the trigger ( 26 ) was fully activated. Contraption ( 10 ) according to claim 16, in which the lancet retaining device has cooperating components in or on the interior of the housing ( 12 ) and on the lancet ( 28 ) having. Contraption ( 10 ) according to one of the preceding claims, in which there is further provided a blocking device which is designed to control the triggering mechanism ( 26 ) relative to the housing and in the housing ( 12 ) in a predetermined position when the device ( 10 ) was triggered once. Skin piercing device ( 10 ), comprising: a housing ( 12 ) with an opening ( 22 ) therein and with a first set of locking elements, a lancet ( 28 ), which are inside the housing ( 12 ) and which has a second set of blocking elements for releasably engaging with the first set of blocking elements, a lancet cap ( 34 ), which is the tip of a needle ( 32 ) of the lancet ( 28 ), whereby the needle ( 32 ) and the lancet cap ( 34 ) along a path for firing within the housing ( 12 ) are arranged and wherein the opening ( 22 ) is also arranged along the path for firing, a guide track within the housing ( 12 ), which extends substantially in the direction of the path for firing, a drive device ( 46 . 54 . 62 . 66 ) which is arranged in the guide track and has elements for engagement with the lancet cap ( 34 ) as well as elements for releasing the second set of locking elements from the first set of locking elements, a spring ( 40 ), between the lancet ( 28 ) and the drive device ( 46 . 54 . 62 . 66 ) and a lancet cap deflector ( 34 ), which is adjacent to the lancet cap ( 34 ) between the lancet cap ( 34 ) and the opening ( 22 ) is arranged.