DE1541102A1 - Device for collecting blood and taking a blood sample - Google Patents

Description

DR.-ING. WALTER ABITZ DR. DiETER MORF

Patent attorneys

8 Mönchen 27, Plenzenauerstra Telephone 483225 and 486415 telegrams: Chemindus Mündien

luerstraoe 28

June 16, 1966 2431

ABBOTT LABORATORIBS North Chicago, Illinois, V.Sf.A ₁ Device sum Sam »one of blood and one for removing one

Blood test

The invention relates to a device for collecting blood and for taking a blood sample from a donor. In particular, the device according to the invention has a needle arrangement built into or embedded in the line, with a needle which is inserted into a » mm blood vessel tube

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attached housing is arranged , can be easily exposed for taking a blood sample by the Nockonvirkung of opposite surfaces of the housing, which are formed by a tearable line of weakness.

In US patent application serial no. 267 752 is a blood collection device shown with a needle installed in the line, the needle in the line being inserted into a Tearable plastic cap is poured into the collecting tube is arranged. The cap is separable to reveal the needle, placing the exposed needle in a trial tube to collect a sample of the donor's blood for Anpa β rjungs purposes can be introduced. In the preparation of the built-in configuration as described in the patent application mentioned shown, the cap is injected as such directly over the inserted needle. Therefore, when the cap portion is abieoea and the upper portion of the same is peeled off to expose the needle, it can often happen that it the tight fit of the cap on the needle makes it difficult to remove the upper part of the needle oil. This is of course undesirable as it is for the economics of the bloodlines1 process it is essential that the blood sample is drawn in a proportionate manner short tent duration can take place, as a «close observation by a trained technician is necessary.

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The present invention overcomes the aforementioned disadvantages of the previously proposed devices by a a line of weakness around the perimeter of a hollow housing provides in which the inserted needle is arranged. The line of weakness is at an oblique angle in with respect to the longitudinal axis of the housing, one on the upper and lower portions of the housing in opposite "direction exerted torque on the housing cut along the score line. Daduroh will be opposite » creates lying cam surfaces which act on one another, to separate the upper and lower housing sections from each other and to close the upper housing section from the needle rihieben, which 1 * lower Gehäuaeabechnitt firmly mounted which facilitates the removal of the upper housing part and the simultaneous exposure of the inserted needle will. The torn score line also represents a counterfeit indicator. A self-sapping plastic sleeve can be anchored in the upper housing and the inserted needle «removable and» tan over the Extending out the weakening line, do a leo-safe Form a seal on the Behwächungelinie and the AbnehaeJi to facilitate the upper hair loss »

Xs is therefore an object of the present invention to provide an in a wire built-in or inserted needle earthing, see below

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• chaff «η, which · · 1η · easy · separation of the ·· housing represents • Inserted needle · L is lit to open the inserted needle Taking a blood sample to reveal.

A further aim ·· tl * »r i * t invention to provide a built-in line Madelanordnung with a housing having what ·· facilities that EUR relief eind suitable relative displacement of the parts ancinanderliegenden de accurate · _r · da un invading To expose the end of the needle inserted in the line.

Another object of the invention is to provide a in dl · conduit built-in needle assembly with a breakable plastic housing, which · a line of weakness has inclined to the longitudinal axis of the housing, with a relative rotation of the housing sections on both sides the line of weakness in opposite directions Housing aa of the line of weakness sertronnt, with the exposed Edges on the severed weakening line form cam surfaces, which act on one another, and the housing sections to move each other in the longitudinal direction and thereby the Abnetaen of the covering the pointed end of the needle Housing section a st »facilitate.

Another aim of the invention is to create ^: - 4 - BAD ORIGINAL

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a needle assembly built into the line with a needle housing, which has a score line at an angle to the longitudinal axis deeeelben, which divides the housing into an upper and lower section, an inserted needle being arranged in the housing and anchored at a lower end in the lower section and a pointed end protrudes into the upper section, and a sleeve is fastened in the upper section, which surrounds the inserted needle and beyond the line of weakness into the lower

Section protrudes, with a mutual relative rotation of the The upper and lower parts of the housing break open at the score line and the housing sections are longitudinally separated from each other separates to removing the top sections to facilitate from the needle point *

The invention is illustrated by way of example using the figures explained in more detail. Bit shows

FIG. 1 shows a view of the bar table, in which the invention Device for collecting blood and taking sun off Blood samples are shown with a needle built into the line,

2 βinon section through the invention, in which Line built-in cable arrangement along line 2-2 in Figure 1,

Figure 3 is a section length of the line 3-3 in Figure 2,

FIG k is a partial side view geschnitten®} in which the built-ffade! 1st illustrated arrangement, the upper and lower portion of the Sehäuses are rotated against each other and the opposing cam surfaces acting on one another,

FIG. 5 is a side view of the one shown in FIG Device after separating the device along the dome Line of weakness and the separation of the housing sections and

Figure 6 is a partial side view of a different design * - fore of the invention.

FIG. 1 is a device generally designated 9 shown to »Sameοlh of blood and taking blood samples, which has a blood vessel container 10, which eats blood from a donation * »is collected. The container 10 let »it a »lower end strip 11 through which a» not shown carrying organ g'eeteokt kaaa, among other things dos »hold container underneath a dispenser» asu, whereby you »blood is maintained by gravity in the container. A lower end part 12 of the container »10 1st string of an» Ittig arranged implementation 13 verses * - *, to which a bend «

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Saaer hose 14 for connection old de so inrisren of the container 10 is connected. A spherical base 15 of the implementation prevents a lint, soft, coagulation-preventing agent normally contained in the container, from entering the hose . The ball 15 is displaced from the blood channel into the container 10 so that the tide can flow into the same.

The container 10 has no connections 1? and 18 £ 1ir dl «later · Supply of the blood provided. The blood collection container 10 has preferably in the form of a pouch made of soft polyvinyl chloride. However, the invention is not of dependent on some particular type of blood tank.

The had ·! Arrangement 18 inserted into the line has "In general" it 20 denotes a genius · old of a development in which the inserted Mad ·! 4th arranged 1st. The body 20 has an upper section 22 and a lower section 21, which are connected by a neck part old of a breakable notch or weave line £ 4 which can be separated from each other. The expanded load M of the built-in Had! odor cannula kO 1st in lower section. 21 (FIG. 2) and has a »piteee end to» Kinstooh »n, which extends over the score line Zk into the upper section 22. The end kl dor Kanüli int "was shown sua widened end of the wedge, however, any suitable means such as projection" or the like) · dl radially VOA end of the cannula

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to the outside etehon and to fix the cannula at the bottom Section 21 of JehUuses 20 are suitable to be used.

The middle shark section 23 of the housing 20 has a substantially smaller diameter than the upper and lower housing sections 21 and 22 in order to facilitate the separation of the housing at the basket line when a finger pressure in opposite directions on the pairs of integrally attached wings 27, 26 and 30, 31 formed on the lower case 21 and the upper case, respectively. The upper section 21 and the lower section 22 each have tapered band parts 26 and on which the ends of the hose sections 14 * and 14 are respectively fastened, for example by friction seats, heat sealing or soldering. The other end of the tube 1V is connected to an intravenous needle assembly 35 of conventional design. A sterility-maintaining hood 36 sits removably on the cannula 37. The tubes 1 * », λ * ι *, the built-in needle assembly 18 and the intravenous needle assembly 35 form the collecting line for the drainage of blood from the venous system of a donor * to the blood collection container

The implementation Ϊ9 has an extended externally independent

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Sparung or a paragraph at its upper end in the upper Oehäueoabechnitt 22. An eccentric stop 52 of the sleeve 30 is arranged in the recess 53 and locks the sleeve 30 in the upper housing facet (FIG. 3). The main to11 51 of the sleeve 50 extends from the stop 52 over the Kerbliwio 2k into the lower housing section 21. The sleeve is arranged over the built-in needle ko and encloses the same tightly and removable.

The notch 2k is arranged obliquely to the longitudinal axis of the passage 29, the basket line being essentially flat and running around the entire circumference of the neck portion 23 of the housing and ending at its horizontal edge in horizontal edge parts 33 and 34 (FIG. 2) . When breaking, the corbliuie forms ganübdrliegonde nockers> surfaces 55 and ?, S *

When the inventive device is used, the cannula 37 is inserted into the tube of a blood donor and the blood is transferred through the collecting tube 19 into the blood container after the ball 15 has been removed before the end of the tube Ik. VT> jnn the container with the blood is filled, the tube · Tück ^ h ^ is temporarily blocked, for example by clamping with a Arverienklesiaio, then, the hose stucco Ik by knotting, Abtcleimnen with a * Motallzwin ^ e, electronic seal odejf like sealed. The building 20 of the built-in

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The needle is then grasped by placing the index finger and thumb of the left hand on the wings 30 or 31 and the thumb and index finger of the extended hand on the wings 27 and 28. Then a finger pressure is exerted on the wings ι on to rotate the upper and lower housing section in opposite directions, as shown in Figure k. The initial rotation of the upper and lower housing sections in the manner described separates these sections along the notch line 2k and, as the rotation continues, the opposing cam surfaces 55 and 56, which are oppositely inclined, act on each other with a cam action around the upper and lower To press housing section 21 or 22 along the longitudinal axis of the implementation 29 away from each other. When the two housing sections are rotated 180 ° against each other, the mutual displacement of the housing sections by the cam action is ended and these sections are then grasped by the technician's hands and pulled apart to expose the tip 42 of the built-in needle kO . The tip of the grooved needle 40 is then inserted into the guami stopper of an evacuated trial tube ( not shown), the arterial clamp that has clamped off the tube is removed and the blood from the cannula 37 flows through the tube 1V and the built-in needle kO in <lo »Pv above ear. This will provide a sterol blood sample. The test tube is exactly the same as the container 10 for the purpose of later mutual (Jber-

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Adjust the blood in the container, if desired to deliver a patient.

In the manufacture of the in-line needle assembly 18, the housing 20 is molded over the needle ho. Therefore, the camming action caused by the opposing forces of the cam surfaces 55 and 56 pushes apart the housing parts 21 and 22, which are stuck due to the syringe, and loosens the cannula in the upper portion 22 so that it can be removed.

Further facilitate the Herausnehmet Va, the inserted needle kO su, the sleeve 50 is inserted over the cannula snugly against de "splash Ctehäuses 20th This makes it easier to remove the upper housing portion St because the sleeve 50 is made of its self-lubricating material having a low coefficient of friction, such as nylon. The inserted needle kO can therefore easily be pushed out of the sleeve 50. The sleeve 50 also serves to maintain the sterility of the inserted needle kO and to prevent blood from leaking by creating a tight seal at the score line and thereby preventing blood or contamination from escaping through the perforations of the score line *

The eccentric shoulder 52 of the sleeve 50 is used for anchoring

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deeeelben and therefore the upper end of the Httlee in the upper GehHueeabeohnitt 22, so that the Httlee with the upper Oehltueeabechnitt 22 is moved when the upper and lower Qehäueeabeohnitt are separated from each other by turning. Veiter enables this anchoring of the Httlee that the Httlee is removed from the inserted needle when the the upper and lower housing sections are pulled apart, as can best be seen in FIG.

It is noted that although the line of weakness in the figures at an angle of about 45 ° with respect to the longitudinal axis of the passage 29 is shown, but this angle can be modified within the scope of the present invention. For example, by increasing the angle of the score line with respect to the longitudinal axis of the passage 29, the due to the opposite effect of the nook areas 55 and 56 Achieved shift in length of the skin sections enlarged will. By reducing the angle of the score line, the one that can be achieved by the interacting nose surfaces can be achieved mechanical cap effect can be enlarged.

Furthermore, the score line 2k in the preferred exemplary embodiment is even shown in the weeentliohen with horizontal edge parts and 3k , but it also falls within the scope of the present invention that the score line is completely flat or has a continuously curved shape, such as from

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the score line 2V in Figure 7 is shown. As long as the Score line a substantially continuous curve or a substantially straight line becomes an appropriate one Cam effect of the cam surfaces achieved. Ee is further noted that the neck 23 is shown in the figure with a circular cross-section, the cross-sectional shape dl · ··· Neck and its dimensions can, however, be modified within the scope of the invention.

The housing 20 is preferably a unitary, pressed

or injection-molded organ made of hard, breakable plastic, such as a polycarbonate (commercially available as Lexan) or «ines

Acetet-butyrate-styrene copolymer (commercially available as Cry las tic) *. Other plastics that can be used for the housing are styrene, acrylic resin derivatives, and nylon. The plastic sleeve 50 is preferably made of a self-lubricating plastic with a low coefficient of friction, so that the needle kO can easily be pulled out of the sleeve. A particularly suitable material for this purpose is nylon.

The score line 2k is shown in the preferred exemplary embodiment of alternating material strips of the housing and empty spaces, but it should be noted that other forms of weakening lines can be used, in which case it is intended to break open by constriction of the plastic in the area .

ORIGINAL

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Claims (3)

1R41102 a »June 16, 1966 Claims Blood collection device, characterized by a blood collection container, a subcutaneous needle, a hollow, breakable housing with "in the upper end" and "in the lower end", a first piece of flexible tubing which nits the container The upper container is connected by a second tube, which connects the lower end to the eubcutaneous needle, formed in the housing of the ttafang - weak bungalini diagonally across the longitudinal tube forms d ·· Gehäusos, w "l · opposing cam surfaces and because · housing so prepared, Dall ·· into an upper Absohnitt and" inen lower portion can be separated, one mounted in the housing cannula which nit a) first end into the lower And extends retractably into the upper section with a pointed end, the nooks and crannies cooperating to longitudinally separate the upper and lower sections from one another when the section is twisted in opposite directions with respect to one another en. 2. Blood collection device,., Characterized by «inon blood sauna tank, «Ine subcutaneous · needle, a hollow · · artificial ■ ^μ '^ -' ■ · ■ * ■ ■ .- "V ;, - Ii * - BAD ORIGINAL 909824/0224 J (T Fabric housing has an "upper end" and a lower end End, a first piece of flexible tubing, which connects the container at the top, a »wide · tube · piece, which · is the lower end "It connects to the subcutaneous needle, an essentially flat line of weakness which extends from the housing ring" its ifefang formed obliquely to the length axis ·· deaeelben becomes and da · Oshäu ·· in the position that ·· in one upper section and a lower section can be separated, a cannula, which is stored in Oehäu ·· and has a first end supported in the lower section feet and a retractable end extending into the upper section, the edges of which are the Line of weakness act as Noekenflachen ', and the To facilitate the separation of the lower and lower parts, if the sections are twisted against each other in opposite directions * 3. Blood collection device, characterized by a Blood, atm * oil container, a subcutaneous needle, a hollow one Plastic housing with an upper end and a lower end, a first piece of blegsanen tubing, welohee connecting the container to the upper end, a second Sehlauchesstück, welohee the lower end nit the subcutaneous Needle connects, an essentially flat weakening »- line, wsloh · γοη Oehäu ·· ring · uv its Uofang oblique - 15 - BAD OFUGJNAl. 90S324 / 0224 is formed to the longitudinal axis of the housing and through which the housing is placed in a state that it is in a upper section and a lower section can be separated, a cannula, which is arranged in housing and nit a first end firmly into the lower section is mounted and protrudes with a pointed end pull-out into the upper section, a pair of opposite Wings, which are each arranged on the upper and lower section, with the edges of the housing as cam surfaces act to separate the upper and lower sections in a longitudinal direction when the sections in opposite directions with respect to each other Applying finger pressure on the wings to be twisted. k, blood collection device, characterized by a blood collection device, a subcutaneous needle, a plastic housing which has a longitudinal passage and an upper end and a lower end, a first piece of flexible tube which connects the container to the upper end second tube, which connects the lower shaft to the subcutaneous needle, a line of weakness running at the fang, which is formed by the housing at an angle to the passage and puts the housing in a state that it is in an upper recess and a lower section can be separated, a cannula in de * implementation, the first end of which in v, - 16 - ^BAD ORIGINAL 909824/0224 lower section firmly stored let and its tip Extendable into the upper section protrudes, a pair of tone opposite wings, which in opposite Riohtung are attached to the upper and lower sections, using a finger druoke to rotate the wings so that the sections twist against each other; the case at the score line severed and the severed score line surfaces as Cam surfaces act to keep the housing parts apart to separate and take off the top section too facilitate, making the JCannula tip for insertion is exposed in a trial tube. 5 * BIutea · »« device, characterized by a blood channel container, »Its subcutaneous needle, a plastic housing, which has a longitudinal passage and an upper end and a lower end, a first flexible hose * tüok, which the container »It connects to the upper end, a second piece of tubing, which connects the lower end to the subcutaneous needle, an essentially flat score line running at the periphery, which is formed by the housing obliquely to the implementation and puts the housing in a state that it is in a upper section and a lower section can be separated, a cannula in the implementation, the first end of which the lower section is firmly mounted and its tip - 17 - "BATH «01824/0224 * ⁹⁰ 243 t protrudes into the upper section so that it can be pulled out, «ixte Hüls ·, There is no part of the cannula and it is a sin It is attached to the upper section and has a second The end is detachably mounted in the lower section Pair of opposing wings, which are raised in opposite directions on the upper and lower sections are, the application of a finger pressure to k rotation of the wings so that the sections against each other are twisted, the housing is severed at the score line and the severed score line surfaces are used as cam surfaces act to separate the sections, thereby facilitating removal of the top section, and exposing the cannula tip for insertion into a trial tube. 6; Blood collection device, characterized by a blood vessel • a subcutaneous needle, a breakable plastic precisely, which has a longitudinal passage and an upper and lower end first "flexible tube" which connects the container "with the upper bath," a second piece of tubing, which connects the subcutaneous needle at the bottom with the subcutaneous needle An essential flat score line, which is formed by the body and the bushing, and which puts the housing in such a state that it has an upper section and a lower section . 18 - B ^AD ORIGINAL 809824/0224 can be, a · KanUl · in the implementation, which old a widened end · let poured into the lower section feet and old a pointed end. Leaning out into the upper part, a biegaaae Httlee, which detachably bows the cannula in the passage and bit a first end generally anchored at the upper part, and a detachable second end protrudes beyond the Xerlo line into the lower section »a pair of opposite wings , which are attached in opposite directions aa upper and lower section, the application of a finger pressure to rotate the wings, so that the sections are rotated against each other, the housing is divided at the score line and the divided score line surfaces act as Mooken surfaces, vm the sections from each other see below Separate, making it easier to remove the top section and blegsaaen sleeve, thereby exposing the cannula tip for insertion into a trial tube. - 19 - BATH 90982A / 0224 Blank page ORlGiNAL INSPECTED