DE8303906U1 - Device for taking blood and for applying blood to test strips - Google Patents

Description

BOEHRINGER MANNHEIM GMBH int. No. 2548 Gbm

Device for taking blood and for applying blood to test strips

The invention relates to a device for withdrawing blood from the finger brush and for the reproducible application of blood on test strips.

To determine blood constituents using test strips and test strip evaluators, it is necessary to measure blood ^; For example, from the fingertip - to be taken, to drop onto a test strip and, depending on the type of test strip, wipe or wash off the excess blood that does not penetrate the strip, to observe waiting times and to use a visual color comparison or an evaluation device To determine the extent of the color change due to the constituents of the blood and thus the concentration of the blood constituents.

The reproducibility and correctness of the measurement result is sec in particular by the depth of the puncture, the size of the blood drop, affects the type of transfer of the drop onto the test strip and the wiping of the test strip.

In practice it arises in the inexperienced or physically impaired People often have the problem that these processes are not carried out reproducibly and accurately enough can, leading to large fluctuations from measurement result to measurement result can lead. These problems exist, for example, with the diabetic's self-monitoring of blood sugar.

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In about 10 cases, diabetes is the case with blindness or more Visually impaired connected. Here it is desirable that these handicapped diabetics carry out as many tasks as possible themselves in the interests of extensive rehabilitation can. Up to now, self-monitoring of blood sugar was excluded for this group of people for the reasons mentioned above.

Except for a device for wiping test strips according to GM 7611169, no devices have been known so far, which are suitable for the preparatory activities for the determination of blood constituents using test strips also for inexperienced and physically disabled people in a simple and sufficiently reproducible manner. The GM 7611169 but only achieves one of the preparatory actions, namely wiping, improved reproducibility.

Accordingly, the object is to provide a device that allows reproducible blood sampling and a allows reproducible dripping of the blood onto the test strip.

This object is achieved by the device according to the invention solved. The present invention relates to a device for taking blood from the fingertip and for applying blood to a test strip, consisting of a Lancing device (1), a spacer block (2), a guide channel (3) for the test strip, a first stop (4) for the finger and a second stop (5) for the test strip.

The lancing device (1) can consist of a needle, a housing with an outlet opening for the needle and a holder for the needle, which can be moved manually or by spring force for the puncture and also in the opposite direction. The lancing device (1) can be permanently connected to one or more parts (2-8) or be detachable. As piercing device (1), j, with suitable modification of the parts (2-8) also each in \

Commercially available blood lancet devices can be used. t

In a particularly preferred form of early approximation according to FIG. 2 The lancing device (1) and the spacer block (2) together form a blood lancet device known from DE-OS 30 11 211 (15). The guide channel (3) as well as the first stop (4) for the finger and the second stop (5) are for the test strip is connected to a holding part for said blood lancet device, the holding part (11) is designed so that the blood lancet device is easy to use. A stand (12) with an integrated Operating and connection element (16) for the test strip evaluation device and a signal transmitter according to FIG. 3 facilitates the handling of the device according to the invention.

The spacer block (2) contains a first through opening (6), through which the needle of the lancing device (1) is placed in the ajf the spacer block (2) and through the first Stop (4) positioned finger can penetrate. The spacer block contains a second through opening or Recess (7) through which, after the needle has retreated, the test strip over the guide groove (3) to a second Stop (5) is pushed, whereby the reagent field located on the test strip under the first opening (6) comes to rest.

The guide groove (3) for the test strip must be designed so that a physically disabled person, in particular a blind man who can insert the strips safely and reproducibly. Here is a conical or step-shaped cross-section the guide channel (3) is particularly preferred.

The first stop (4) for the finger is equipped with a through opening (8) which enables the Slide the test strip towards and through the spacer block (2).

In a further preferred embodiment according to FIG the spacer block (2) or the mounting part for

the known blood lancet device equipped with a guide groove (13) for the finger (14), whereby the
Positioning the finger is facilitated.

The withdrawal of blood and the application of the blood to the test strip is carried out in such a way that the lancing device (1) is first provided with a needle and - if a spring balancer
or the piercing movement causes - the spring is tensioned. Then a test strip is placed in the guide trough

(3) inserted approximately in position I. After performing the lancing process and the needle retreats, the test strip is pushed in as far as the second stop (5). After getting a has formed a sufficiently large drop of blood, this drop is drained and sucked off onto the reagent field of the test strip or dabbed.

After a waiting time depending on the type of test strip, the strip is withdrawn again into position I, whereby when it is withdrawn by one placed in position II
Cotton ball is used to wipe off the excess blood.

To ensure a reproducible measurement, the
Users are guided by acoustic and / or optical signals from a known signal generator (clock, signal generator for the blind, etc.) that can be coupled to the measuring device and / or the removal device so that it can access the
right times wipes, reads, or the
Insert the strip into the meter.

One in the stand (12) or the device itself

Integrated operating and connection element (16) for the
Test strip evaluation device and a signal transmitter facilitate the handling of the determination of blood constituents.

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The invention is explained with reference to the following drawings. Show it

! FIG. 1: schematic structure of the device, 5

Figure 2: preferred embodiment (11) for use with a blood lancet according to DE-OS 30 11 211 (15),

Figure 3: Stardfuß (12) for inserting the parts 11 and 15, with Operating and connection element (16) for a test strip worth eg he st,

Figure 4: schematic structure of the device with guide (13) for the finger (14). 15th

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Claims (5)

■ ι ■ ··· Protection claims 1. Device for taking blood and for applying the blood to a test strip, consisting of a lancing device (1), a spacer block (2), a guide channel (3) for the test strip, a first stop (4) for the finger and a second stop (5) for the test strip. 2. Device according to claim 1, characterized in that it is equipped with a guide groove (13) for the finger is. 3. Apparatus according to claim 1 or 2, characterized in that the lancing device (1) is a commercially available one Blood lancet device is. 4. Apparatus according to claim 1 or 2, characterized in that the lancing device (1) together with the Spacer block (2) is a blood lancet device according to GM 7611169. 5. Device according to claims 1 to 4, characterized in that that they have an operating element and connection element (16) for guiding the user and for connection to a test strip evaluation device possesses.