DE10245721A1 - Blood analyzer device comprises needles, test media, analyzer and display, and has carrier turned with respect to main body, to position needle and test media - Google Patents

Abstract

Blood analyzer device where the test media (10) and needle (8) are arranged on a carrier which turns relative to the main body (4) and can be inserted into it. Through rotation, the media and needle are brought into their individual working positions (32, 34).

Description

The invention relates to a lancing device for use when taking a minimum amount of blood on the human or animal body for analysis, with a Housing body and a plurality of lancing elements, wherein the Plurality of lancing elements on or in a carrier arranged and used with this in the housing body and can be removed again from the housing body after use, wherein a respective lancing element in a working position with its pointed end into a lancing position at the Housing body applied skin surface of a user is pierceable, and with a on a respective lancing element in its working position acting pusher.

Such a lancing device is known from DE 100 57 832 C1 known.

From US 6,228,100 and US 4,794,926 are blood collection or piercing devices are known in which a number of Lancing elements on one opposite a housing body rotatable support are arranged. According to US 6,228,100 B1 the lancing elements radially by means of a pusher device ejected and according to US 4,794,926 are the lancing elements in oriented and activatable in the axial direction.

Other lancing devices with a plurality of Lancing elements are known for example from US 2002/0087056 A1 or WO 02/36010 A1.

From EP 0 589 186 B1 it is known, for example, that ground tip of a lancing element with a Protective cap means to be provided, which before the execution of Stitching is manually turned off.

According to WO 01/66010 A1, a plurality of lancing elements in housed independent chambers of a magazine, wherein a respective opening of the chamber of an elastic Material is closed, which during the lancing process can be pierced.

Starting from a lancing device according to the beginning DE 100 57 832 C1 mentioned is the present invention the object of the handling of the lancing elements within the housing body to improve and effective To ensure protection of the free ends of the piercing elements, without the execution of the shock process thereby would be complicated or associated with significant space requirements would.

This object is based on a lancing device of mentioned type according to the invention solved by a respective lancing element at least partially in one Holding body is added and the tip einstechbare End forming end portion of the lancing element of a The removable protective cap means that surround the Longitudinal dimension of the respective lancing element with holding body and protection cap means in lancing direction ≤ 15 mm and that the protective cap means before the execution of Lancing preferably transverse to the piercing direction of the Motion path of the lancing element by means of a device internal displacer is brought.

Characterized in that a respective lancing element in a holding body is included, which is in particular a Plastic injection molded part can act on the lancing element sprayed, can be a substantial miniaturization of the Lancing element of a dimension of at most 15 mm, in one preferred embodiment of at most 14 and in particular of at most 13 mm, the longitudinal dimension also with the holding body and the protective cap means includes. The protective cap means is within the Lancing device immediately before the execution of Lancing process from the movement path of the lancing element removable. For example, the relevant Protective cap means first in the lancing direction of the Lancing element be peeled off so that it is from the free end of the Lancing comes free, so that it is preferably transverse to Punching direction and automated by means of a Repressive organ can be set aside to then to perform the lancing process. Likewise, it would be conceivable that the respective protective cap means first in his Position remains and the lancing element slightly opposite the lancing direction is withdrawn, so that the free end of the Lancing element released from the protective cap means.

Although the protective cap means could be independent of the Production of the holding body on the free pointed end of Lancing element are applied; however, it turns out manufacturing technology, especially with regard to aimed at miniaturization, as beneficial if the Protective cap means also, preferably in the same process along with the holding body, molded onto the lancing element becomes. In such case, the protective cap means may be over a, forming a weakened area or predetermined breaking area Pass the section in one piece into the holding body. This simplifies the handling of the lancing elements immediately following their production.

Although could the weakening or breakage range forming section by twisting the cap means be solvable. Following the above but it proves to be advantageous if the the Weakening or breaking region forming portion Tensile load in the longitudinal direction of the respective lancing element, ie in the lancing direction, is breakable.

To release the protective cap means this could by a any, for example, pestle or sleeve-shaped, Verdrängermittel first in the lancing direction of the Be peeled off lancing element or - as already mentioned - could the piercing element against the lancing direction be moved back and so from the cap means come free. According to a particularly preferred embodiment the invention is the protective cap means in tensioning the Pusher detachable from the lancing element. So it will be one associated with the tensioning of the pusher movement for Releasing the protective cap means related. In particular, will while the piercing element against the piercing direction withdrawn.

According to a further inventive idea comes the holding body for the lancing element not only a holding function for the Lancing element too, but also a guiding function in the Execution of the shock process. The outer shape of the holding body is complementary to guidance means, for example in Form of baffles for sliding arrangement of the Lancing element, formed.

In a further embodiment of the holding body has this at least one position securing means in the form of a protruding Footbridge on. Such a projecting web can, for example the holding body and thus the piercing element in one position keep in the plane, so prevent a turn around the Longitudinal axis of the lancing element, in particular during the Bumping takes place or that the lancing element when Replacement of a lancing element carrier from the carrier slides out.

But a respective holding body can also be a Lancing process elastically yielding spreadable bridge have, which exert a retraction force on the lancing element can, so that the holding body together with lancing behind a contact surface is pulled back on the housing body.

For the execution of the lancing process, it would be conceivable that the Lancing device has a spring-biased impact member, which in the lancing direction on one end of the holding body or the respective lancing element impinges and this then in Stechrichtung suddenly moved. In contrast, it turns out as advantageous if the respective holding body with the Lancing device has cooperating rear grip means. About this Hintergriffsmittel a respective holding body be coupled with the lancing device and in particular with the clamping of the lancing device in an activated position to be moved. In this way - as mentioned - the protective cap means are released from the lancing element. To the Solving the cap means this way it is required that the protective cap means against Slings run or otherwise restrained becomes. Advantageously, the respective Protective cap means in the longitudinal direction of the lancing element held positively against the carrier, so that it in this regard, on a movement of the holding body together Lancing member does not participate, but from the holding body and Lancing element is released.

Furthermore, it proves to be advantageous if the Protective cap means transverse to the path of movement of the lancing element positively driven is movable. This can conveniently be done by complementary training of the carrier or components on Carrier and the cap means are achieved. It will expressly noted that this does not apply a concrete shape of the protective cap means, but always on a complementary formation of the outer contour of the Protective cap means and suitable receptacles preferably in or arrives at the carrier, so that the protective cap means the release of the piercing element or the holding body of the Lancing element immediately along this forced guidance from the Movement path of the lancing element by means of device-internal displacement element can be spent.

To the protective cap means, in particular transversely from the Moving path safely and quickly is this preferably biased, in particular transversely to Motion path of the lancing element. This is advantageously Displacement member under bias stress indirectly or immediately against the cap means. To one Relative movement between the protective cap means and To avoid a displacement organ, it proves to be advantageous that each protective cap means a Repressive organ permanently, so outside the assigned to each work item.

It should again be noted that for training of the displacement member no compelling requirements Exception to be made of that after displacement of the loosened cap means the movement path for that Lancing element must be released again. Especially in the In view of this, it proves to be advantageous if the Displacement member a particular U-shaped bracket comprising the protective cap means from the path of movement of the Lancing element spends. Due to the bow-shaped design can then also after the displacement process the Repressive organ continues to be incriminating against the Protective cap means, wherein the lancing element between legs of the strap can move through.

It proves to be particularly advantageous that the carrier Disposal positions for a respective cap means in which the respective protective cap means after the Separation from the lancing element captive is receivable. As very particularly advantageous, it turns out that such case defined receiving positions, in particular receiving cavities, provided on the carrier, and that the protective cap means can be removed together with the carrier from the housing body.

According to another idea of the invention is the respective Protective cap means in its disposal position in clamping position accommodated, allowing it without disturbing noises too develop, is included. For example, it may be below Preload or load against a wall of the carrier issue. It proves to be particularly advantageous if For this purpose, the displacer is usable. To this end it is advantageously designed such that it at least in the disposal position areal against the Protective cap means is applied.

It turns out in terms of a compact training of Device advantageous if the protective cap means in its starting position at the free end of the lancing element and in its disposal position by the same means, in particular and preferably by the displacement element, is biased.

The displacer is preferably mounted on the support, so it with this in the. Housing body is used.

In a preferred embodiment of this inventive concept that is Displacement member provided on the support so that it Lancing elements with their holding bodies and the Protective cap means captive, but nevertheless slidably held on the carrier. In that case it proves prove to be advantageous if the displacer as Spring element is formed which loading against the Protective cap means is applied. With rotatable training of Support for the lancing elements, the displacement element as Spring ring formed with radially projecting spring tongues his.

Below are preferred embodiments of the pusher explains: The jib can be a tensioned Piston means or plunger means as a shock member for the Execution of the lancing process include. While it is conceivable that the impact member on the free end of the holding body or Lancing member impinges to this abruptly accelerate, it proves to be advantageous if one Shock element of the pusher before the execution of the Bumping process is connected to the holding body. For this purpose points the impact member on a coupling area, which with the Holding body for the lancing element is coupled, so that Shock element and lancing element even before the execution of the Bumping in driving connection stand, so in particular the impact member together with the holding body a tensioning movement can perform.

The positive coupling between the impact element and the holding body or lancing element can by any clamping means, Locking clip or the like achieves releasable connections become. In development of the invention is the Coupling region of the impact member and the holding body but Coupled by that both relative to each other across the Stechrichtung in a positive driving connection are movable. In that case, no flexible claws, Locking or clamping means to be used. Especially at concentric rotary arrangement with radially aligned Lancing elements are the holding body and the coupling area the impact member in the circumferential direction of the rotatable assembly in the driving connection rotatable.

To the shock member of the jar against a clamping force To tension, the impact member has a transverse to the lancing direction on the above clamping cam. In turn, one would be in itself any design of the pusher for tensioning the Impact organ conceivable; the described tension cam proves itself but to that extent as advantageous as he is a shift of Clamping mechanism for the impact element in a parallel plane allows. The tensioning cam can then advantageously along a curved path of an adjustable or actuatable Be guided tensioning means. During this movement of the Clamping cam along the curved track becomes linear positively driven impactor in a cocked activated State brought. In the mentioned curved path may be advantageously to a slide track or a Cam guide track per se arbitrary realization act.

It proves to be further advantageous that the Clamping means after execution of the movement in clamping direction spring-force controlled is moved back. It is about Here, for example, a particular disc-shaped pivotally or rotatably mounted lever, in whose Movement in the clamping direction a return spring is tensioned. For example, the clamping means on the housing of the Lancing device projecting lever, which then manually can be deflected in the clamping direction and at the Let go again automatically moved back to the starting position.

In a further development of the invention of very special importance forms the clamping means for clamping or activating the Impact device at the same time an adjusting means to a respective Lancing element in a working position and used one To bring lancing element into a disposal position. It can So in particular the carrier with the lancing elements to one Step further, in particular further rotated. Instead of continuing the carrier it would be too conceivable that advancing the pusher relative is carried out to the carrier. After the above mentioned Concept of the invention is thus by one and the same Actuating both the jar activated as well a new, still unused lancing element or the Pusher brought to a working position.

The clamping means or the clamping mechanism can be so be formed and arranged that it is in a first phase the movement in drive connection with the carrier for the Lancing elements and in a second phase of movement in Drive connection with the impact member is. In that case can the drive connection between the clamping device and the carrier at the end the first movement phase by sliding the clamping means or one arm of the tensioning means released against a ramp means become. In this way it can be achieved that despite Actuation by the same clamping means first in the first Phase by advancing the carrier a new lancing element brought into the working position and in particular with the Coupling member is coupled and then in the second phase of the Move the shock organ, in particular together with it coupled lancing element, is moved in the clamping direction.

If so far from a lancing device for use in the Taking a minimum amount of blood on human or animal body was for analysis purposes, so means This does not mean that does not contain additional components may be. In particular, it proves to be advantageous when the lancing device together with a plurality of Test agents, an evaluation and a Display device a manageable as a single device Blood analyzer, a so-called "all-in-one" device.

In such case, it proves to be advantageous that the Test means are successively brought into a working position, in the from a previously pierced skin surface of a User the required minimum amount of blood on the respective test agent is available. For the test agents can For example, it is membranes with contained therein Test reagents act, with the help of the analysis optically or electrochemically or electrophysically in per se known and therefore not to be described manner is performed. For example, this may be an analyte such as Fructosamine, lactate, cholesterol or, in particular, glucose the previously taken minimum amount of blood qualitatively and preferably also be determined quantitatively.

According to a preferred embodiment of the invention are the Lancing elements and / or the test agent concentric to a Fulcrum arranged so that they are in their respective Working positions are rotatable. This is advantageous a first carrier for the lancing elements and one of them separate second carrier provided for the test means.

With regard to a substantial miniaturization of Device proves to be particularly advantageous if the lancing elements in a radial arrangement on the carrier Cut out circle segment, so that the carrier so in the Housing body is used, that the shock device is in this circle segment extends. Thus that in one cake-piece-like circle segment, which in particular 10 to 20 ° in the circumferential direction, no lancing element is provided, the jar can in this Area in the circle segment in the radial direction hineinerstrecken; the insertion of the carrier with the Lancing elements in the housing body is thus not by the Impact device obstructed. This further proves to be advantageous if - as described above - a respective Lancing element or a holding body for a respective Lancing element and a shock member of the pusher relative are rotated into each other in a coupling connection.

Further features, details and advantages of the invention result from the claims and the appended drawings and the following Description of a preferred embodiment of the invention. It should be noted that the in the claims claimed features regardless of their combination and Relation of the claims each separately seperately considered to be essential to the invention so that protection at any time for special embodiments of lancing elements, the Carrier or the carrier, the pusher device, the drive and adjusting mechanism for the lancing elements at Lancing devices or for blood analysis devices in Claimed, and regardless of the Training of other components, in particular independent of the currently claimed training of the lancing device according to Claim 1. In the drawing:

Fig. 1 is a perspective view of a preferred embodiment of the lancing device according to the invention;

FIG. 2 shows a perspective view into the interior of the lancing device according to FIG. 1 with the cover part omitted; FIG.

Components shown in Figures 3 and 4 an exploded view in a housing body of the lancing device of FIG. 1 and 2.

Fig. 5 and 6, a puncturing element of the puncturing device according to the invention;

Fig. 7a-c the manufacturing process of a puncturing element;

FIG. 8 is a perspective view of a carrier for the lancing elements; FIG.

Figure 9 is a perspective view of a retaining means for the piercing elements on the carrier, which simultaneously forms a displacement agent for the protective cap means.

Fig. 10, 11 is a perspective view of the carrier with piercing elements before or after use;

Fig. 12 and 13 a perspective view of the housing body of the lancing device;

FIG. 14 is a perspective view of the impact member of the lancing device; FIG.

Fig. 15 is a perspective view of the triggering means of the lancing device;

Fig. 16 is a perspective view of the clamping means of the lancing device and

Fig. 17 is a view of the lancing device from below with omitted lower cover part.

Figures 1 and 2 are perspective views of a lancing device, generally designated by the reference numeral 2 , for taking a minimum amount of blood on the human or animal body for analysis. In Fig. 2 a shown in Fig. 1 pivotally hinged lid part 4 is omitted. It can be seen inside a housing body 6, a plurality of concentric and radially arranged piercing elements 8 , which will be described in more detail below. In the center of the concentric arrangement, a pusher 10 can be seen, which defines a shock or lancing direction 12 .

FIGS. 3 and 4 show the insertable into the housing body 6 components in an exploded view. It will be appreciated that the, on an annular disc-shaped carrier 14 in designated guideways or guide recesses 16 of the carrier 14 are slidably hereinafter to be described and provided with a protective covering piercing elements 8, the radial arrangement is indicated in Fig. 3 in the radial direction.

Above the lancing elements 8 , an annular disk 18 made of spring steel is shown in Fig. 3, soft on the manner to be described in more detail, the lancing elements 8 captive in the guide recesses 16 of the carrier 8 , but holds radially displaceable.

Above the annular disc 18 , a second carrier 20 is shown with schematically indicated contacting 22 for provided in the contact area 22 test means 24 for carrying out the blood analysis, that is for determining the presence and content of an analyte, for example, blood sugar, lactate, cholesterol or fructosamine. It would be conceivable that these test means 24 , which are not shown in detail, in particular membrane-like, can be acted upon by a feed opening in the cover part 4 of the lancing device with the required minimum amount of blood. However, it would also be conceivable for an analysis test strip (not shown) to be dispensed through a slot-shaped opening 28 and wetted with the minimum amount of blood. An analysis can then be carried out amperometrically or potentiometrically via the contacting 22 and an evaluation device (not shown). It would also be conceivable to carry along separate analysis test strips, which are then inserted through the slot-shaped opening 28 to the contact 22 on the carrier 20 , which are therefore not carried in the interior of the housing body 6 on the carrier 20 . In a preferred embodiment, however, the second carrier 20 carries a number of test means 24 corresponding to the lancing elements 8 .

On the side of the cover part 4 facing upward in FIG. 1, a display device having a display can be fastened, for example, in combination with the usual components of a wristwatch.

Fig. 4 shows the housing body 6 , which has a bottom plate 32 with a cylindrically upwardly projecting edge portion 34 and a centrally located dome-shaped elevation 36 with sections circular circumference 38 . On the underside of the bottom plate 32 , a disc-shaped member 42 provided with an operating lever 40 projecting radially outward is rotatably arranged. It is held by a bottom-side cover member 44 rotatable on the underside of the bottom plate 32 of the housing body 6 . Also indicated is a retraction means in the form of a return spring 46 . The disk-shaped component 42 forms a tensioning means 48 for the impact device 10 .

In the center of the dome-shaped elevation 36 , the total designated by the reference numeral 10 shock device is housed. It comprises a shock member 50 to be described in more detail, a shock spring 52 and a return spring 54 , a triggering means 56 and a cover 58 . The pusher 10 is activated by pivoting the actuating lever 40 and thus the disk-shaped member 42 by the shock member 50 is clamped against the pressure of the shock spring 52 . By pressing of the activation means 56, the impact member 50 snaps in the radial direction and merges with a piercing element 8 a piercing operation from 8 thereby rockets the lancing element via the position shown in Figs. 1 and 2 contact position 60 for a finger of a user for a short time out and pierces the Skin surface so that a user immediately thereafter can deliver a minimal amount of blood from the fingertip.

The components cited above are described in detail below with reference to individual representations in structure and function:
Fig. 5 shows a perspective view greatly enlarged a lancing element 8 with the also apparent from Figs. 2 and 3 enclosure. This sheath is a plastic holding body 62 , which is injection-molded onto the needle-shaped piercing element 8 (often referred to as a lancet), and a protective cap means 64 in the region of the sharpened pointed end 65 (see Fig. 6b). During the injection process, the lancing element 8 is held in the injection mold 62 through the remaining free opening 66 in the holding body 62 . It is molded in one operation, the holding body 62 and the protective cap means 64 . Holding body 62 and protective cap means 64 merge into one another via a thin-walled transition region 68 , which forms a weakening region 70 . However, it is expressly pointed out that by means of slides or by successive production of holding body 62 and protective cap means 64 , a non-integral formation of these components around the lancing element 8 would be conceivable. Furthermore, it can be seen a cutout 72 in the transition region 68 , which favors the formation of the thin-walled weakening region 70 . This free cutting 72 can be formed, for example, by a further holding means for the lancing element 8 during the injection process.

It can also be seen an obliquely at an angle of about 40 ° to the longitudinal direction of the lancing element 8 of the holding body 62 projecting and integrally formed therewith web 74 having a rounded free end 76 . The web 74 with respect to the cuboid holder body 62 abspreitzbar or elastically resiliently deformable for the puncturing element 8 in the direction of the double arrow 78th On the one hand, it ensures stabilization in the supporting plane for the holding body 62 and, for example, prevents tilting about the longitudinal direction. After execution of a shock process, however, he can also initiate a retraction torque in the holding body and thus in the lancing element 8 and withdraw this again. It also secures the lancing element 8 against sliding out of the guide recesses 16 of the carrier 14 .

The protective cap means 64 has an H-shape in plan view. It has on both sides guide recesses 80 , with which it is held on the one hand in the longitudinal direction of the piercing element 8 , ie in the radial direction, immovably on the carrier 14 , but on the other hand transversely, perpendicular to the longitudinal direction of the lancing elements 8 with respect to the carrier can slide.

FIGS. 6a, b and c illustrate the dimensioning of the largely miniaturized lancing element with holding body and protective cap means. It comprises in its longitudinal direction including holding body 62 and protective cap means 64 a length of only 12.5 mm. FIGS. 7 a, b and c illustrate the manufacturing or singling process during the production of lancing elements 8 surrounded by holding bodies 62 and protective cap means 64 . It is also seen already from Fig. 5, is formed that faces away from the protective cap means 64 end of the holder body 62 and having a discontinued the lancing element 8 exposing stage 82. By means of indicated upper and lower blades 84 , 86 , the lancing element 8 is cut to length by an endless wire or tube, by bringing the upper blade 84 almost into abutment with the step 82 and thereby positionable with respect to the holding body 62 and lancing element 8 . This is shown in FIGS. 7a to 7c.

FIGS. 8 to 11 show the arrangement of the lancing elements 8 together with the holding body 62 and the protective cap means 64 on the carrier 14 . The carrier 14 is formed annular disk-shaped and contoured consuming on its visible side. In the illustrated case, it comprises ten radial guide recesses 16 bounded by a support plane 88 lying in the plane of the window and two lateral guide walls 90 perpendicular thereto and radially aligned. In each case a lancing element 8 with holding body 62 and protective cap means 64 is radially slidable. The respective piercing elements 8 are inserted from above, ie in the axial direction in the guide grooves 16 and then assume the positions shown in Fig. 2 and Fig. 10. It can be seen that no piercing element 8 is arranged in a circle segment 91 of the carrier 14 . When the carrier is inserted from above into the housing body 6 , the carrier 14 is to be positioned so that the circular segment 91 is oriented above the pusher 10 , so that the pusher 10 with its radially outer end extends into this circular segment 91 . The impact element 50 is then arranged within the circle segment 91, as it were , between two adjacent lancing elements, namely the first and the last lancing element. A positioning means or a positioning aid in the form of an arrow-shaped contouring of the annular disc 18 can also be seen . The piercing elements 8 are held in their positions within the guide recesses 16 of the carrier 14 by means of the annular disc 18 made of spring steel. For this purpose, the annular disk 18 is inserted over a number of openings 92 on corresponding pins 94 of the carrier 14 and these are then rivet-like, in particular by ultrasonic welding, expanded. The annular disk 18 made of spring steel has radially projecting tongues 96 , which are oriented parallel to the support wall 88 and hold and guide a respective housing body 62 of a respective piercing element 8 . Around each tongue 96 extends around a further bow-shaped tongue 98 , which is U-shaped and connects with the two legs of the U-shape of the annular disc 18 . The bow-shaped tongue forms a displacement means 99 for the protective cap means 64 in order to displace them from the path of movement of the piercing elements 8 . The extending in the circumferential direction of the connecting webs 100 of the tongue 98 are slightly angled upwards to the plane of the annular disc 18 and formed meandering. They therefore each define an abutment plane which runs slightly obliquely to the plane of the annular disk 18 . This has the following reason: It can be seen from FIG. 10 that the connecting webs 100 and the plane respectively formed through them are likewise arranged obliquely to the upper side 102 of the respective protective cap means 64 . Nevertheless, the respective connecting web 100 rests under slight prestressing on the upper side 102 of the relevant protective cap means 64 . If, in a manner to be described in more detail, a holding body 62 is pulled radially inwards with the injected lancing element 8 and the weakened area 70 between holding body 62 and protective cap means 64 is broken, the bow-shaped tongue 98 pushes the respective protective cap means 64 transversely to the lancing direction or with its connecting web 100 Longitudinal direction of the lancing elements 8 down to the position shown in Fig. 11. In this disposal position 103, the connecting web 100 of the resilient tongue 98 rests in a planar manner on the upper side 102 of the respective protective cap means 64 ( FIG. 11 shows the lancing elements 8 after the lancing process has been carried out).

Furthermore, it can be seen from FIGS. 8, 10 and 11 strip-shaped in the axial direction oriented guide posts 104 , which engage in the guide recesses 80 of the respective protective cap means 64 . The respective protective cap means 64 is displaceable in the axial direction, ie perpendicular to the radially oriented piercing direction on these guide posts 104 . At the same time, these guide piles 104 hold a respective protective cap means 64 non-displaceable in the radial direction, so that when the holding body 62 is pulled inwardly, the weakened area 70 can be broken. Subsequently, as previously explained, a respective cap means 64 is received in a receiving cavity 106 in the carrier 14 which forms the disposal position 103 for the cap means. In this receiving cavity 106 , a respective protective cap means is then held without play under load by the bow-shaped resilient tongue 98 . A disturbing rattling noise can not occur.

FIGS. 12 and 13 show the housing body 6 with and without the relevant components of the impact device 10 . It can be seen that the dome-shaped elevation 36 in the housing body 6 forms a receptacle for the impact element 50 , the impact spring 52 and the return spring 54 . By the cover 58 , these components are captive and held in the piercing direction 12 , ie longitudinally displaceable in the radial direction in the recording. Fig. 14 shows a greatly enlarged view of the impact member 50 which is formed in the form of a piston means or plunger means having a stepped outer diameter and thus has an axial step 108 against which the return spring 54 is supported at one end. At the other end, the return spring 54 is supported against a cheek 110 of the dome-shaped elevation 36 . At the larger diameter end 112 , the shock spring 52 is supported , while the other end is supported against a cheek 112 of the dome-shaped elevation 36 . The impact member 50 further includes a coupling portion 116 which is opened in the impact direction, but also in the circumferential direction. This coupling region 16 is designed to be complementary to a rear grip region 118 (see FIG. 5) of the holding body 62 and is capable of receiving this region, so that the holding body 62 can be coupled to the impact element 50 and forms a form-locking entrainment connection with the impact element 50 . In the case of the orientation of the impact element 50 shown in FIG. 13, a holding body 62 of a lancing element 8 can be screwed into this coupling region 16 by rotating the carrier 14 , as can also be seen in FIG . If the impact member 50 , if it is in driving connection with a holding body 62 of a lancing element 8 , withdrawn radially inward, wherein the shock spring 52 is tensioned, so can the respective protective cap means 64 , which is held in a form-fitting manner in the radial direction, and between their present weakening area 70 breaks. As soon as the free pointed end 65 of the puncturing element 8 is released from the protective cap means 64 , this is - as described above - brought to the disposal position 103 under the effect of the bow-shaped resilient tongue 98 . The piercing element 8 together with the holding body 62 , meanwhile, follows the tensioning movement of the impact element 50 . The pusher 10 is now in the activated state and can be actuated by pressing the release means 56 to perform the lancing operation.

The tensioning of the pusher 10 will now be described.
As can be seen from FIG. 14, the piston or pusher-type impact element 50 comprises a clamping cam 120 projecting transversely to the lancing direction. This clamping cam 120 passes through a radially extending linear aperture 122 in the bottom plate 32 of the housing body. 6

The clamping cam 120 therefore protrudes downwards over the underside of the bottom plate 32 . He engages in an opening 124 in the disc-shaped member 42 mentioned above with the radially projecting actuating lever 40 a. This opening forms a cam guide curve 126 , such that the clamping cam 120 is displaced radially inward on rotation of the disk-shaped component 42 along this cam guide curve 126 . By pivoting the radially projecting actuating lever 40 in the direction of the arrow 128 ( FIG. 13), the impact member 50 is moved radially inward against the force of the impact spring 52 via the cam guide curve 26 and the clamping cam 120 , until a locking arm 130 of the triggering means 56 in FIG a latching recess 132 of the impact member 50 in the larger diameter portion and engages the pusher member 50 initially holds in the tensioned state. When the actuating lever 40 is released, it is moved back into the starting position, as shown in FIG. 13, under the action of the restoring spring 46 ( FIG. 4) mentioned above. As already mentioned, the actuating lever 40 and the disc-shaped component 42 form a clamping means 48 for the impact device 10 .

FIG. 16 shows a web 134 , which is extended in the circumferential direction, on the disk-shaped component 42 which , due to a slot-shaped parting line 136 , which likewise extends essentially in the circumferential direction, can be deflected slightly elastically in the axial direction relative to the plane of the component 42 (see FIG Arrow 138 ). At the free end of the web 134 a projecting in the axial direction projection 140 is formed, which engages in the interior of the bottom 32 of the housing body 6 in its interior by a circumferentially extending slot-shaped recess 142 , as shown in FIG. 13 can be seen. This approach 140 moves upon pivoting of the actuating lever 40 of the component 42 along this slot-shaped recess 142 . In this case, the projection 140 is in rotational engagement with the carrier 14 , namely until the web 134 slides with its projection 140 on the underside of the bottom plate 32 of the housing body 6 on a wedge-shaped ramp means 144 , which is apparent from FIGS . 12 and 13 , In this Aufgleiten the web 134 is deflected in the illustration of FIGS. 12 and 13 down and the projection 140 "dips" in the bottom plate 32 and thereby comes except rotational drive with the carrier fourteenth It is thus only in this first phase of the movement of the actuating lever 40, a transport of the carrier 14 due to rotational coupling of the projection 140 with the carrier 14 instead. During this phase, the clamping cam 120 is not yet moved inward in the radial direction! During this first phase of the movement of the projection 140 up to the ramp means 144 , an unused lancing element 8 is brought into the working position by rotation of the carrier 14 . In this case, the holding body 62 is rotated with its radially inwardly disposed rear grip means 118 in the coupling region 116 of the impact member 50 . The opening 124 in the disk-shaped component 42 is now designed and arranged such that the clamping cam 120 of the impact member 50 at the moment with the cam track 126 cooperates, in which the next following holding body 62 has entered the coupling region 116 of the impact member 50 and not further transported becomes. In this position of the clamping cam is now 120 along the cam guide curve 126, the impact member 50 of the impact member 50 snaps together with the holder body 62 and the puncturing element 8 radially inwardly drawn to the latch arm 130 with a latch hook in the recess 132 by sliding. As previously described, during this tightening operation of the pusher 10, the weakened area 70 between the holding body 62 and the protective cap means 64 is broken, and the cap means is moved to the disposal position 103 shown in FIG. 11, thereby releasing the moving path for the piercing member 8 . If the pusher 10 is now actuated via the triggering means 56 , then the pusher member 50, together with the holding body 12 and the lancing element 8, jumps radially outwards, and the free end 65 of the puncturing element 8 snaps extremely fast over the abutment position 60 on the outside of the peg Housing body 6 before to penetrate into the skin surface of a user extremely short term. During this lancing process, the return spring 54 is tensioned, which then quickly moves the holding body 62 together with the lancing element 8 back into the interior of the housing body 6 . Also, the spreadable web 74 then supports the correct positioning of the used piercing elements 8 on the carrier 14 and prevents the replacement of a used carrier cassette against a new that used piercing elements including holding body 62 from the guide recesses 16 in the carrier 14 in the radial direction slip out, resulting in safe disposal ensured used lancing elements.

Fig. 17 shows a view of the underside of the bottom plate 32 of the casing body 6, without the in Fig. Bottom lid portion 44 shown in Figure 4.

With the invention, therefore, a lancing device with miniaturized lancing elements has been developed which make it possible to make the lancing device carry along the type and size of a wristwatch on the wrist of a user. The lancing device accordingly comprises a plurality of, in particular, between 5 and 12 piercing elements, which are inserted as a cassette on the carrier 14 into the housing body 6 . For this, a user folds the cover part 4 upwards and sets a disc cartridge into the inside with respect to certain orientation marks a. The cover part 4 is then closed, and via the actuating lever 40 , a first lancing element 8 is brought into the working position. In this case, the lancing element 8 or its housing body 62 is brought into a driving coupling with the impact member 50 and pulled thereafter radially inward. In this case, the protective cap means 64 is severed at the free end 65 of the lancing element 8 and moved transversely to the lancing direction 12 into a disposal position 103 on the carrier 14 . When triggering the thus activated shock device 10 , the impact member 50 is accelerated together with the holding body 62 and the lancing element 8 in the radial direction abruptly by relaxation of the shock spring 52 and brought by means of the return spring 54 back to the starting position. By pressing the actuating lever 40 again, the support 14 is in turn rotated by one position over the projection 140 , ie the used piercing element is rotated from the working position and a still unused piercing element is brought into the working position, etc. If all lancing elements are used up, then it is possible the carrier 14 does not move due to a rotation stop and the user is thus informed that a cassette with new lancing elements must be used.

Claims (42)

1. lancing device (2) for use in the removal of a minimum amount of blood in the human or animal body for analysis purposes, having a housing body (6) and a plurality of puncturing elements (8), wherein the plurality of puncturing elements (8) on or in a Carrier ( 14 ) arranged and used with this in the housing body ( 6 ) and after use again from the housing body ( 6 ) are removable, wherein a respective piercing element ( 8 ) in a working position with its pointed end ( 65 ) in a to a piercing position ( 60 ) applied to the device skin surface of a user is pierceable, and with a on a respective piercing element ( 8 ) acting in its working position shock device ( 10 ), characterized in that a respective lancing element ( 8 ) at least partially received in a holding body ( 62 ) is and a the tip einstechbare end ( 65 ) forming end portion of the lancing element ( 8 ) of a releasable S cap means ( 64 ), that the longitudinal dimension of the respective lancing element ( 8 ) with holding body ( 62 ) and protective cap means ( 64 ) in the lancing direction ( 12 ) ≤ 15 mm and that the protective cap means ( 64 ) before the execution of the lancing process from the movement path of the lancing element ( 8 ) by means of a device-internal displacement member ( 99 ) can be brought. 2. Apparatus according to claim 1, characterized in that the holding body ( 62 ) is formed of plastic and molded onto the lancing element ( 8 ). 3. Apparatus according to claim 1 or 2, characterized in that the protective cap means ( 64 ) is formed of plastic and molded onto the lancing element ( 8 ). 4. Apparatus according to claim 1, 2 or 3, characterized in that the protective cap means ( 64 ) over a weakening or predetermined breaking region ( 70 ) forming portion integrally into the holding body ( 62 ) passes. 5. The device according to claim 4, characterized in that after the weakening or predetermined breaking region ( 70 ) forming section to tensile load in the longitudinal direction of the respective lancing element ( 8 ) is breakable. 6. Device according to one or more of the preceding claims, characterized in that the protective cap means ( 64 ) during clamping of the pusher device ( 10 ) of the lancing element ( 8 ) is releasable. 7. Device according to one or more of the preceding claims, characterized in that the respective holding body ( 62 ) is complementary to guide means ( 88 , 90 ) for the slidable arrangement of the lancing elements ( 8 ) is formed. 8. Device according to one or more of the preceding claims, characterized in that the respective holding body ( 62 ) has at least one position securing means in the form of a protruding web ( 74 ). 9. Device according to one or more of the preceding claims, characterized in that the respective holding body ( 62 ) has at least one resiliently spreadable during the lancing process web ( 74 ), which can exert a retraction force on the lancing element ( 8 ). 10. Device according to one or more of the preceding claims, characterized in that the holding body ( 62 ) with the lancing device ( 10 ) cooperating rear grip means ( 118 ). 11. The device according to one or more of the preceding claims, characterized in that the respective protective cap means ( 64 ) in the longitudinal direction of the lancing element ( 8 ) is held positively against the carrier ( 14 ). 12. The device according to one or more of the preceding claims, characterized in that the protective cap means ( 64 ) is forcibly moved transversely to the movement path of the lancing element ( 8 ) by the carrier ( 14 ). 13. The device according to one or more of the preceding claims, characterized in that the protective cap means ( 64 ) transversely to the piercing direction ( 12 ) from the movement path of the lancing element ( 8 ) can be brought and this is preferably biased. 14. The device according to one or more of the preceding claims, characterized in that the displacement member ( 99 ) under bias voltage indirectly or directly against the protective cap means ( 64 ). 15. Device according to one or more of the preceding claims, characterized in that the displacement member ( 99 ) has a particular U-shaped bracket, which spends the protective cap means ( 64 ) from the path of movement of the lancing element ( 8 ). 16. The device according to one or more of the preceding claims, characterized in that the carrier ( 14 ) has disposal positions ( 103 ) for a respective protective cap means ( 64 ) in which the respective protective cap means is captively accommodated. 17. The device according to one or more of the preceding claims, characterized in that the respective protective cap means ( 64 ) in its disposal position ( 103 ) under bias against a wall of the carrier can be applied. 18. The device according to one or more of the preceding claims, characterized in that the displacement member ( 99 ) is formed such that it is at least in the disposal position ( 103 ) areally against the protective cap means ( 64 ) can be applied. 19. The device according to one or more of the preceding claims, characterized in that after the protective cap means ( 64 ) is biased in its initial position at the free tip end ( 65 ) of the lancing element ( 8 ) and in its disposal position ( 103 ) by the same means , 20. Device according to one or more of the preceding claims, characterized in that the displacement member ( 99 ) mounted on the carrier ( 14 ) and with this in the housing body ( 6 ) can be inserted. 21. The device according to one or more of the preceding claims, characterized in that the displacement member ( 99 ) the piercing elements ( 8 ) with their holding bodies ( 62 ) protective cap means ( 64 ) captive on the carrier ( 14 ) holds. 22. The device according to one or more of the preceding claims, characterized in that the displacement member ( 99 ) is designed as a spring element which bears against the protective cap means ( 64 ) loading. 23. Device according to one or more of the preceding claims, characterized in that the displacement member ( 99 ) as a spring ring ( 18 ) with radially projecting, in particular bow-shaped spring tongues ( 98 ) is formed, which bear stressfully against the protective cap means ( 64 ). 24. The device according to one or more of the preceding claims, characterized in that the pusher device ( 10 ) comprises a tensionable piston means or plunger means as impact member ( 50 ) for the execution of the lancing operation. 25. The device according to one or more of the preceding claims, characterized in that a shock member ( 50 ) of the pusher device ( 10 ) has a coupling region ( 116 ) which is positively coupled to the holding body ( 62 ) for the lancing element ( 8 ), so that thrust member ( 50 ) and piercing element ( 8 ) are in driving connection. 26. Device according to one or more of the preceding claims, characterized in that the coupling region ( 116 ) of the impact member ( 50 ) and the holding body ( 62 ) can be coupled, that both relative to each other transversely to the piercing direction ( 12 ) are movable. 27. The device according to one or more of the preceding claims, characterized in that in concentric rotatable arrangement with radially aligned lancing elements ( 8 ) of the holding body ( 62 ) for the respective lancing element ( 8 ) and the coupling region ( 116 ) of the impact member ( 50 ) in Circumferential direction of the rotatable assembly in driving connection are rotatable. 28. The device according to one or more of the preceding claims, characterized in that the impact member ( 50 ) of the pusher ( 10 ) has a transverse to the lancing protruding clamping cams ( 120 ) over which the impact member ( 50 ) is clamped against a clamping force. 29. The device according to one or more of the preceding claims, characterized in that the clamping cam 120 ) along a curved path ( 126 ) of an adjustable clamping means ( 48 ) can be guided. 30. The device according to one or more of the preceding claims, characterized in that the clamping means ( 48 ) has a slide track or cam guide track. 31. The device according to one or more of the preceding claims, characterized in that the clamping means ( 48 ) after execution of a movement in the tensioning direction for tensioning or activating the pusher device ( 10 ) is moved back spring-force controlled. 32. Device according to one or more of the preceding claims, characterized in that the clamping means ( 48 ) for clamping or activating the pusher device ( 10 ) at the same time forms a setting means to a respective lancing element ( 8 ) or the pusher device ( 10 ) in one Working position and a used lancing element ( 8 ) to bring to a disposal position ( 103 ). 33. The device according to one or more of the preceding claims, characterized in that the tensioning means ( 48 ) is designed and arranged so that in a first phase of movement in drive connection with the carrier ( 14 ) for the lancing elements and in a second phase the movement is in drive connection with the impact member ( 50 ). 34. Device according to one or more of the preceding claims, characterized in that the drive connection between clamping means ( 48 ) and support ( 14 ) at the end of the first movement phase by sliding the clamping means ( 48 ) or an arm ( 134 ) of the clamping means ( 48 ). is releasable against a ramp means ( 144 ). 35. Device according to one or more of the preceding claims, characterized in that the clamping means ( 48 ) disc-shaped or annular disc-shaped and in the housing body ( 6 ) is rotatably arranged. 36. The device according to one or more of the preceding claims, characterized in that in or on the housing body ( 6 ) a plurality of test means ( 24 ) for receiving a minimum amount of blood as well as an evaluation comprehensive evaluation device and a display device is provided so in that the abovementioned components form a blood analyzer which can be handled as a single device. 37. Device according to one or more of the preceding claims, characterized in that the test means ( 24 ) can be successively brought into a working position in which from a previously pricked skin surface of a user, the minimum amount of blood can be applied to the respective test means. 38. Device according to one or more of the preceding claims, characterized in that the test means ( 24 ) are arranged in or on a carrier ( 20 ) and can be used together with this in the device. 39. Device according to one or more of the preceding claims, characterized in that lancing elements ( 8 ) and / or test means ( 24 ) are arranged concentrically to a pivot point, so that they are rotatable in their respective working positions. 40. Device according to one or more of the preceding claims, characterized in that a first carrier ( 14 ) for the piercing elements ( 8 ) and a separate second carrier ( 20 ) for the test means ( 24 ) is provided. 41. Device according to one or more of the preceding claims, characterized in that the piercing elements ( 8 ) with a radial arrangement on the carrier ( 14 ) a circle segment ( 91 ) cut out and that the carrier ( 14 ) so in the housing body ( 6 ) can be used in that the impact device ( 10 ) extends into this circular segment. 42. Device according to one or more of the preceding claims, characterized in that the number of piercing elements ( 8 ) on the support ( 14 ) is 5-35, in particular 5-25 and preferably 5-15.