CA1152402A - Capillary receptacle - Google Patents
Capillary receptacleInfo
- Publication number
- CA1152402A CA1152402A CA000316377A CA316377A CA1152402A CA 1152402 A CA1152402 A CA 1152402A CA 000316377 A CA000316377 A CA 000316377A CA 316377 A CA316377 A CA 316377A CA 1152402 A CA1152402 A CA 1152402A
- Authority
- CA
- Canada
- Prior art keywords
- receptacle
- capillary
- insert
- cylindrical
- receiving receptacle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/150015—Source of blood
- A61B5/150022—Source of blood for capillary blood or interstitial fluid
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/150206—Construction or design features not otherwise provided for; manufacturing or production; packages; sterilisation of piercing element, piercing device or sampling device
- A61B5/150213—Venting means
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/150343—Collection vessels for collecting blood samples from the skin surface, e.g. test tubes, cuvettes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/150755—Blood sample preparation for further analysis, e.g. by separating blood components or by mixing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L3/00—Containers or dishes for laboratory use, e.g. laboratory glassware; Droppers
- B01L3/02—Burettes; Pipettes
- B01L3/021—Pipettes, i.e. with only one conduit for withdrawing and redistributing liquids
Abstract
ABSTRACT OF THE DISCLOSURE
There is disclosed a capillary receptacle for the extraction and storage of blood, which receptacle features the improvement that an insert is provided for the receptacle, said insert having a cylindrical main portion inserted into the opening portion of the receptacle and a short funnel-shaped portion adjacent there-to, the tip of which has such a small inner diameter that blood externally thereof is drawn in by capillary action, whereas the main portion has such a large inner diameter that the entering blood is able to freely flow off.
There is disclosed a capillary receptacle for the extraction and storage of blood, which receptacle features the improvement that an insert is provided for the receptacle, said insert having a cylindrical main portion inserted into the opening portion of the receptacle and a short funnel-shaped portion adjacent there-to, the tip of which has such a small inner diameter that blood externally thereof is drawn in by capillary action, whereas the main portion has such a large inner diameter that the entering blood is able to freely flow off.
Description
llSZ9~OZ
CaPillar~ RecePtacle Thi~ invention relates to a capillary receptacle ~or the ex-traction and storaze of blood.
~eceptacle~ for storing blood, in particular in the form of small tube~ clo~ed at one end and consistlng Or glas~ or a preferably tran~parent pla~tic material are conventional and ~erve to store the blood extracted by mean~ of a ~pecial blood extrac~ion device.
It i8 fkrthermore known to obtain mlnor quantltie~ of blood in that a finger tip or an ear lobe of a patient i3 punctured and the out~lowing blood 1B drawn wlth a capillary of glass or pla~tic which i~ immer~ed into the outflowlng blood with it 8 one end, Also, such narrow glass capillaries ha~e been placed into the bore of a plug for a receptacle, the plug being provided with a second bore for a pre~sure equalization. ~his device on the one h~nd has the disadvantage that becau3e of the a~ial lengt~
. . . /over ~.
~5Z40Z
ol the plug 3tringently a capillary must be used which has a len~th of about 1 to 2 cms o~ more. In this capillary a con-siderable a~ount of blood i8 retained, provided, it is not ~pecially blol~n e~pty, and thi~ quantity is lost for te~tin~.
A blowinp-ovt, however, is dlfficult to per~orm under ~terile corlditions and requlres a further operation.
Also, after removlng the plug provided with bores ~nd provided wit~ the glass capillary, a new plug mu~t be used for closing the receptacle, and this plug increase~ the cost of the device further.
Fin~lly, lt i8 al80 known to enlarge ~uch a capillary at its rearward end and to apply it to the extraction ~ite in such a way that the blood drawn by the tlp by a caplllary effect then flow~ into the rearward, enlarged portlon. It i~ possible with ~uch a funnel-3haped enlarged capillary to extract a somewhat larger quantlty of blood than pos~lble with the caplllarle~
cyllndrical throughout In the~e conventlonal capillary receptacles, there wa~ a more narrow intermediate portion between the tip with the capillary bore and the rearward, enlarged portion~ in ~hich intermedlate portion the blood cohered a~ a re~ult of the capillary e~fect a~ a self-contained column and did not detach from the wall.
Thi~ brought about the di~advantage that the blood dr~wn by the capilla~y tip could not flow off rapidly ~../over An object of this invention is to provide a capillary receptacle operating on the above mentioned principle which permits a simple and clean removal of even larger quantities of blood flowing from an injection site by a capillary effect and a storing of this blood in a virtually closed receptacle which may then subsequently be closed completely tightly for a further storing or for dispatching.
A capillary receptacle in accordance with the invention for the extraction and storage of blood comprises a receiving receptacle having a removable insert. The receiving receptacle has a bottom portion slightly tapering inwardly towards a closed bottom, the tapered portion extending over a substantial portion of the length of the receiving receptacle and defining a tapered receiving chamber, a cylindrical upper portion adjacent to the bottom portion, and a substantially cylindrical top portion having a larger inner diameter than that of the upper portion, adjacent to the cylindrical upper portion and open at the upper end thereof. The removable insert has a cylindrical main portion, inserted into the top portion of the receiving receptacle, and a short portion the interior of which is funnel shaped, adjacent to the cylindrical main portion, the tip of the short portion having such a small inner diameter that blood externally thereof is drawn in by capillary action and the main portion of the insert having such a large inner diameter that the ,, ~1~240Z
- 4a -entering blood is able to flow freely onto and off there-from into the receiving receptacle without being hindered by capillary action. The device is characteri~ed in that the outside of the cylindrical main portion of the insert and the inside diameter of the top portion of the receiving rcceptacle are so shaped that the outside of the cylindrical rnain portion is tightly received into the inside of the top portion with a venting duct provided thereb~tween.
The invention is explained in closer detail hereinafter in embodiments by way of example in referring to the drawings: Therein:
Fig. 1 is an enlarged cross-sectional view of a capillary receptacle according to the invention;
Fig. 2 is a sectional view taken along line II-II of Fig. l;
Fig. 3 is an elevational view in a true scale of a capillary receptacle applied to the looe of the ear of a patient;
Fig. 4 is a partially broken-away elevan~ional view of t~e receptacle of the capillary receptacle of Figs. 1 and 2, closed by a plug;
Fig. 5 is a more enlarged part-sectional view of a modified embodiment;
Fig. 6 is a likewise more enlarged part-sectional view of a further embodiment of the invention;
~15;~402 - 4b -Fig. 7 is a part-sectional view at the same scale as the illustration of Figs 5 and 6, of a modified insert;
and Fig. 8 is a part-sectional view at the same scale at an insert ll~SZ402 provided with an eccentrical arrangement of the tip.
The capillary receptacle according to Figs. 1 to 3 comprises a receiving receptacle 2 and a plugged-in insert 1. The insert is tapered funnel-shaped at its upper end and opens into a very short capillary 4. In the preferred embodiment the capilla~y 4 has a length of 1-3 mm, preferably 2 mm.
Capillary 4, as illustrated in Fig. 3, is applied to the injection site in a lobe 0 of an ear (or into a finger tip or the like). The main portion 5 of the insert is, as will be noted from Fig. 2, generally formed circular-cylindrical, but provided with a flattened portion 6 on one side which upon inserting the insert into the opening portion 7 of the receiving receptacle 2 results in a venting duct 13 between these portions by which air displaced when blood flows in is able to escape.
The receiving receptacle is slightly tapered in its bottom portion 9 and thus permits a storing and good handibility of even minimum quantities of blood. Adjacent to thls tapered bottom portion, there is provided a circular-cylindrical upper portion 8 which permits the storing ofeven major quantities of blood. This upper portion finally merges into an enlarged opening portion 7 which tightly receives the main portion 5 of the insert. The cylindrical inner wall of this opening portion 7 merges into the narrower inner wall of the upper portion 8 through the intermediary of a tapered portion 3 on which the bottom ~lSZ402 - 5a -edge of the main portion 5 of the insert 1 rests.
When the capillary tip 4 of the insert, as illustrated in Fig. 3, ~5~402 is applied to the point of injection at a lobe of an ear or a finger tip, the outflowing blood is drawn in by the capillary. The capillary receptacle on the whole is held slightly downwardly inclined. The result thereof is that the blood drawn in initially by the capillary action into the tip 4 then flows into the enlarged portion of the insert subject to the action of gravity, detaches from the wall there and continues to flow on. From the lower edge of the insert which is dimensioned a little narrower than the inner wall of the upper portion of the receiving receptacle the blood then flows further downwardly into the receiving receptacle and collects at the bottom thereof, as indicated at 10 in Fig. 3. The blood flows from the point of injection into the receiving receptacle as long as the capillary 4 stays immersed in the liquid blood.
In order to prevent a coagulation of the extracted blood, in a manner known per se an anti-coagulant substance may be introduced into the receiving receptacle 2.
After effecting removal of the desired quantity of blood, the insert is withdrawn and discarded, and the receiving receptacle is closed by a plug 11, as illustrated in Fig. 4.
The blood may now be centrifugalized in this receptacle or also tested directly.
In the embodiment illustrated in Fig. 5, the receiving receptacle 2a is virtually unmodified, whereas the main portion 5a of the insert la extends with its lower, offset - 6a -end 12 into the upper ;~
1~5'~402 portion 8a of the receiving receptacle 2a. The cylindrical inner wall of the main portion 5a of the insert la extends smoothly and without any shoulder/ so that the inflowing blood is able to smoothly flow off. The tapered end 12 is only dimensioned so thick externally that between it and the surrounding upper portion 8a of the receiving receptacle a gap of such a size remains that it has no capillary effect and the blood is able to flow off unobstructed.
In the embodiment illustrated in Fig. 6, the inner wall of the opening portion 7b of the receiving receptacle 2a enlarges towards its open upper end, preferably at a taper angle of 1-2. The main portion 5b of the insert lb is formed circular-cylindrical like in the embodiments described hereinbefore and rounded at its lower end at 15.
The dimensions are such that the insert lb is able to be clampingly inserted into the opening portion provided with a tapering opening.
Since in this embodiment no inner shoulder is requiredany-more at the location of transition from the opening portion to the upper portion of the receiving receptacle for supporting the lower edge of the insert, the slightly tapered inner wall of the opening portion here gradually and without any sharp edges merges at 14 into the cylihdrical inner wall of the upper portion 8b. Thereby, again a non-obstructed flowing-off of the extracted blood is permitted.
~lS2402 - 7a -In the embodiment illustrated in Fig. 7, the tip 17c of the in-- ~15z40Z
sert 1c i~ dimen~ioned only ~ery short, na~ely ~o short that a capillary suction effect just exists. Between this tip 170 æ~d t~e main portion 5c of the insert, there is a steep, LUn-nel-snaped portion 4c. ~his ~teep configuration of the f mnel in relation~hip to the slender configuration of the preceding figure~ brings about the ad~antage that the blood drawn through the tip immediatlly upon entering the funnel i~ torn off the wall a~d flo~ off downwar~ly into the recei~ing receptacle subject to the effect of gravity non-ob3tructed ~ia the lower positioned portion of the side wall 5c.
In the embodiment illu3trated ln ~ig. 8, of the in~ert 1d, the tip 17d is arranged eccentrically and posses~es a co~on tan-gential plane ~th the portlon of the inner wall of the main portion 5d ad~acent thereto. Upon extractlon of blood from the point of in~ection, the insert i~ then he}d in such a way that the blood drawn by the capillary is able to nOw ofi non-ob-~tructedly. According to the eccentric po~itlon of the tip 17d, the funnel-shaped portion 4d between thl~ tip and the maln por-tlon 19 also ~ormed eccentrlcally The n attened portlon lllustrated ln Figs. 1, 5 and 6 at one side of the insert for the sake o~ slmpllclty has not been ll-lustrated in ~ig~ 7 and 8 for these embodiments and may be po~itioned underneath the break-~way posltion of these figures, respecti~ely.
.
-- . .
CaPillar~ RecePtacle Thi~ invention relates to a capillary receptacle ~or the ex-traction and storaze of blood.
~eceptacle~ for storing blood, in particular in the form of small tube~ clo~ed at one end and consistlng Or glas~ or a preferably tran~parent pla~tic material are conventional and ~erve to store the blood extracted by mean~ of a ~pecial blood extrac~ion device.
It i8 fkrthermore known to obtain mlnor quantltie~ of blood in that a finger tip or an ear lobe of a patient i3 punctured and the out~lowing blood 1B drawn wlth a capillary of glass or pla~tic which i~ immer~ed into the outflowlng blood with it 8 one end, Also, such narrow glass capillaries ha~e been placed into the bore of a plug for a receptacle, the plug being provided with a second bore for a pre~sure equalization. ~his device on the one h~nd has the disadvantage that becau3e of the a~ial lengt~
. . . /over ~.
~5Z40Z
ol the plug 3tringently a capillary must be used which has a len~th of about 1 to 2 cms o~ more. In this capillary a con-siderable a~ount of blood i8 retained, provided, it is not ~pecially blol~n e~pty, and thi~ quantity is lost for te~tin~.
A blowinp-ovt, however, is dlfficult to per~orm under ~terile corlditions and requlres a further operation.
Also, after removlng the plug provided with bores ~nd provided wit~ the glass capillary, a new plug mu~t be used for closing the receptacle, and this plug increase~ the cost of the device further.
Fin~lly, lt i8 al80 known to enlarge ~uch a capillary at its rearward end and to apply it to the extraction ~ite in such a way that the blood drawn by the tlp by a caplllary effect then flow~ into the rearward, enlarged portlon. It i~ possible with ~uch a funnel-3haped enlarged capillary to extract a somewhat larger quantlty of blood than pos~lble with the caplllarle~
cyllndrical throughout In the~e conventlonal capillary receptacles, there wa~ a more narrow intermediate portion between the tip with the capillary bore and the rearward, enlarged portion~ in ~hich intermedlate portion the blood cohered a~ a re~ult of the capillary e~fect a~ a self-contained column and did not detach from the wall.
Thi~ brought about the di~advantage that the blood dr~wn by the capilla~y tip could not flow off rapidly ~../over An object of this invention is to provide a capillary receptacle operating on the above mentioned principle which permits a simple and clean removal of even larger quantities of blood flowing from an injection site by a capillary effect and a storing of this blood in a virtually closed receptacle which may then subsequently be closed completely tightly for a further storing or for dispatching.
A capillary receptacle in accordance with the invention for the extraction and storage of blood comprises a receiving receptacle having a removable insert. The receiving receptacle has a bottom portion slightly tapering inwardly towards a closed bottom, the tapered portion extending over a substantial portion of the length of the receiving receptacle and defining a tapered receiving chamber, a cylindrical upper portion adjacent to the bottom portion, and a substantially cylindrical top portion having a larger inner diameter than that of the upper portion, adjacent to the cylindrical upper portion and open at the upper end thereof. The removable insert has a cylindrical main portion, inserted into the top portion of the receiving receptacle, and a short portion the interior of which is funnel shaped, adjacent to the cylindrical main portion, the tip of the short portion having such a small inner diameter that blood externally thereof is drawn in by capillary action and the main portion of the insert having such a large inner diameter that the ,, ~1~240Z
- 4a -entering blood is able to flow freely onto and off there-from into the receiving receptacle without being hindered by capillary action. The device is characteri~ed in that the outside of the cylindrical main portion of the insert and the inside diameter of the top portion of the receiving rcceptacle are so shaped that the outside of the cylindrical rnain portion is tightly received into the inside of the top portion with a venting duct provided thereb~tween.
The invention is explained in closer detail hereinafter in embodiments by way of example in referring to the drawings: Therein:
Fig. 1 is an enlarged cross-sectional view of a capillary receptacle according to the invention;
Fig. 2 is a sectional view taken along line II-II of Fig. l;
Fig. 3 is an elevational view in a true scale of a capillary receptacle applied to the looe of the ear of a patient;
Fig. 4 is a partially broken-away elevan~ional view of t~e receptacle of the capillary receptacle of Figs. 1 and 2, closed by a plug;
Fig. 5 is a more enlarged part-sectional view of a modified embodiment;
Fig. 6 is a likewise more enlarged part-sectional view of a further embodiment of the invention;
~15;~402 - 4b -Fig. 7 is a part-sectional view at the same scale as the illustration of Figs 5 and 6, of a modified insert;
and Fig. 8 is a part-sectional view at the same scale at an insert ll~SZ402 provided with an eccentrical arrangement of the tip.
The capillary receptacle according to Figs. 1 to 3 comprises a receiving receptacle 2 and a plugged-in insert 1. The insert is tapered funnel-shaped at its upper end and opens into a very short capillary 4. In the preferred embodiment the capilla~y 4 has a length of 1-3 mm, preferably 2 mm.
Capillary 4, as illustrated in Fig. 3, is applied to the injection site in a lobe 0 of an ear (or into a finger tip or the like). The main portion 5 of the insert is, as will be noted from Fig. 2, generally formed circular-cylindrical, but provided with a flattened portion 6 on one side which upon inserting the insert into the opening portion 7 of the receiving receptacle 2 results in a venting duct 13 between these portions by which air displaced when blood flows in is able to escape.
The receiving receptacle is slightly tapered in its bottom portion 9 and thus permits a storing and good handibility of even minimum quantities of blood. Adjacent to thls tapered bottom portion, there is provided a circular-cylindrical upper portion 8 which permits the storing ofeven major quantities of blood. This upper portion finally merges into an enlarged opening portion 7 which tightly receives the main portion 5 of the insert. The cylindrical inner wall of this opening portion 7 merges into the narrower inner wall of the upper portion 8 through the intermediary of a tapered portion 3 on which the bottom ~lSZ402 - 5a -edge of the main portion 5 of the insert 1 rests.
When the capillary tip 4 of the insert, as illustrated in Fig. 3, ~5~402 is applied to the point of injection at a lobe of an ear or a finger tip, the outflowing blood is drawn in by the capillary. The capillary receptacle on the whole is held slightly downwardly inclined. The result thereof is that the blood drawn in initially by the capillary action into the tip 4 then flows into the enlarged portion of the insert subject to the action of gravity, detaches from the wall there and continues to flow on. From the lower edge of the insert which is dimensioned a little narrower than the inner wall of the upper portion of the receiving receptacle the blood then flows further downwardly into the receiving receptacle and collects at the bottom thereof, as indicated at 10 in Fig. 3. The blood flows from the point of injection into the receiving receptacle as long as the capillary 4 stays immersed in the liquid blood.
In order to prevent a coagulation of the extracted blood, in a manner known per se an anti-coagulant substance may be introduced into the receiving receptacle 2.
After effecting removal of the desired quantity of blood, the insert is withdrawn and discarded, and the receiving receptacle is closed by a plug 11, as illustrated in Fig. 4.
The blood may now be centrifugalized in this receptacle or also tested directly.
In the embodiment illustrated in Fig. 5, the receiving receptacle 2a is virtually unmodified, whereas the main portion 5a of the insert la extends with its lower, offset - 6a -end 12 into the upper ;~
1~5'~402 portion 8a of the receiving receptacle 2a. The cylindrical inner wall of the main portion 5a of the insert la extends smoothly and without any shoulder/ so that the inflowing blood is able to smoothly flow off. The tapered end 12 is only dimensioned so thick externally that between it and the surrounding upper portion 8a of the receiving receptacle a gap of such a size remains that it has no capillary effect and the blood is able to flow off unobstructed.
In the embodiment illustrated in Fig. 6, the inner wall of the opening portion 7b of the receiving receptacle 2a enlarges towards its open upper end, preferably at a taper angle of 1-2. The main portion 5b of the insert lb is formed circular-cylindrical like in the embodiments described hereinbefore and rounded at its lower end at 15.
The dimensions are such that the insert lb is able to be clampingly inserted into the opening portion provided with a tapering opening.
Since in this embodiment no inner shoulder is requiredany-more at the location of transition from the opening portion to the upper portion of the receiving receptacle for supporting the lower edge of the insert, the slightly tapered inner wall of the opening portion here gradually and without any sharp edges merges at 14 into the cylihdrical inner wall of the upper portion 8b. Thereby, again a non-obstructed flowing-off of the extracted blood is permitted.
~lS2402 - 7a -In the embodiment illustrated in Fig. 7, the tip 17c of the in-- ~15z40Z
sert 1c i~ dimen~ioned only ~ery short, na~ely ~o short that a capillary suction effect just exists. Between this tip 170 æ~d t~e main portion 5c of the insert, there is a steep, LUn-nel-snaped portion 4c. ~his ~teep configuration of the f mnel in relation~hip to the slender configuration of the preceding figure~ brings about the ad~antage that the blood drawn through the tip immediatlly upon entering the funnel i~ torn off the wall a~d flo~ off downwar~ly into the recei~ing receptacle subject to the effect of gravity non-ob3tructed ~ia the lower positioned portion of the side wall 5c.
In the embodiment illu3trated ln ~ig. 8, of the in~ert 1d, the tip 17d is arranged eccentrically and posses~es a co~on tan-gential plane ~th the portlon of the inner wall of the main portion 5d ad~acent thereto. Upon extractlon of blood from the point of in~ection, the insert i~ then he}d in such a way that the blood drawn by the capillary is able to nOw ofi non-ob-~tructedly. According to the eccentric po~itlon of the tip 17d, the funnel-shaped portion 4d between thl~ tip and the maln por-tlon 19 also ~ormed eccentrlcally The n attened portlon lllustrated ln Figs. 1, 5 and 6 at one side of the insert for the sake o~ slmpllclty has not been ll-lustrated in ~ig~ 7 and 8 for these embodiments and may be po~itioned underneath the break-~way posltion of these figures, respecti~ely.
.
-- . .
Claims (11)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A capillary receptacle for the extraction and storage of blood, comprising:
a receiving receptacle having a bottom portion slightly tapering inwardly toward a closed bottom, said tapered portion extending over a substantial portion of the length of the receiving receptacle and defining a tapered receiving chamber, a cylindrical upper portion adjacent to the bottom portion, and a substantially cylindrical top portion, having a larger inner diameter than that of said upper portion, adjacent to the cylindrical upper portion and open at the upper end thereof; and a removable insert having a cylindrical main portion, inserted into the top portion of said receiving receptacle, and a short portion, the interior of which is funnel shaped, adjacent to the cylindrical main portion, the tip of the short portion having such a small inner diameter that blood externally thereof is drawn in by capillary action and the main portion of said insert having such a large inner diameter that the entering blood is able to flow freely onto and off therefrom into said receiving receptacle without being hindered by capillary action; and wherein the outside of the cylindrical main portion of said insert and the inside diameter of the top portion of said receiving receptacle are so shaped that the outside of the cylindrical main portion is tightly received into the inside of said top portion with a venting duct provided therebetween.
a receiving receptacle having a bottom portion slightly tapering inwardly toward a closed bottom, said tapered portion extending over a substantial portion of the length of the receiving receptacle and defining a tapered receiving chamber, a cylindrical upper portion adjacent to the bottom portion, and a substantially cylindrical top portion, having a larger inner diameter than that of said upper portion, adjacent to the cylindrical upper portion and open at the upper end thereof; and a removable insert having a cylindrical main portion, inserted into the top portion of said receiving receptacle, and a short portion, the interior of which is funnel shaped, adjacent to the cylindrical main portion, the tip of the short portion having such a small inner diameter that blood externally thereof is drawn in by capillary action and the main portion of said insert having such a large inner diameter that the entering blood is able to flow freely onto and off therefrom into said receiving receptacle without being hindered by capillary action; and wherein the outside of the cylindrical main portion of said insert and the inside diameter of the top portion of said receiving receptacle are so shaped that the outside of the cylindrical main portion is tightly received into the inside of said top portion with a venting duct provided therebetween.
2. A capillary receptacle according to claim 1, wherein the tip of the funnel-shaped portion of said insert has a length of 1 to 3 mms.
3. A capillary receptacle according to claim 1, wherein the venting duct is formed by a flattened portion on the external circumference of the main portion of said insert.
4. A capillary receptacle according to claim 1, wherein the inner diameter of the main portion of said insert is smaller than that of the cylindrical upper portion of said receiving receptacle.
5. A capillary receptacle according to claim 1, wherein the external diameter of the end of the main portion of said insert extending into the cylindrical upper portion of said receiving receptacle, defines with the inner wall of said cylindrical upper portion a spacing gap which is so small that no capillary effect occurs and blood is able to flow off unobstructed.
6. A capillary receptacle according to claim 1, wherein a plug is provided associated with the receiving receptacle for closing it.
7. A capillary receptacle according to claim 1, wherein the funnel-shaped portion of said insert is formed eccentrical relative to the main portion of said insert and the capillary bore in the tip is disposed at the outer edge of the bore of said main portion.
8. A capillary receptacle according to claim 1, wherein the tip of the funnel-shaped portion of said insert has a length of 2 mms.
9. A capillary receptacle according to claim 1, wherein the top portion of said receiving receptacle enlarges toward its open upper end, slightly tapered, and the external diameter of the main portion of said insert is dimensioned and rounded at the lower edge thereof, said insert being so shaped and dimensioned that it can be clampingly inserted into said top portion of said receiving receptacle.
10. A capillary receptacle according to claim 9, wherein the slightly tapered inner wall of the top portion of said receiving receptacle gradually and without any sharp edges merges into the cylindrical inner wall of the cylindrical upper portion thereof, and wherein said receiving receptacle is rounded at its lower end,
11. A capillary receptacle according to claim 9, wherein the slightly tapered receptacle of the top portion of said receiving receptacle gradually and without any sharp edges merges into the cylindrical inner wall of the cylindrical upper portion of said receiving receptacle.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEP2751503.3 | 1977-11-18 | ||
| DE2751503A DE2751503C2 (en) | 1977-11-18 | 1977-11-18 | Blood collection vessel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1152402A true CA1152402A (en) | 1983-08-23 |
Family
ID=6024011
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000316377A Expired CA1152402A (en) | 1977-11-18 | 1978-11-16 | Capillary receptacle |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US4314570A (en) |
| EP (1) | EP0002038B1 (en) |
| JP (1) | JPS5485589A (en) |
| AT (1) | AT373138B (en) |
| CA (1) | CA1152402A (en) |
| DE (1) | DE2751503C2 (en) |
| ES (1) | ES245916Y (en) |
| IT (1) | IT1106402B (en) |
Families Citing this family (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0005979A1 (en) * | 1978-05-25 | 1979-12-12 | Dynatech Ag | A miniature reaction container and a method and apparatus for introducing micro volumes of liquid to such a container |
| US4441373A (en) * | 1979-02-21 | 1984-04-10 | American Hospital Supply Corporation | Collection tube for drawing samples of biological fluids |
| EP0029361B1 (en) * | 1979-11-19 | 1984-08-29 | Robert Charles Turner | Liquid sample collector device |
| SE422150B (en) * | 1980-04-23 | 1982-02-22 | Enstroem Hans | DEVICE FOR SKIN REPLACEMENT AND WAY TO MAKE SUCH A DEVICE |
| US4397318A (en) * | 1981-08-10 | 1983-08-09 | Becton Dickinson And Company | Blood collector for microcollection container |
| JPS58204909A (en) * | 1982-05-25 | 1983-11-29 | Iida Denki Kogyo Kk | Method and circuit for detecting engine lubircating oil |
| JPS5949309A (en) * | 1982-09-14 | 1984-03-21 | Iida Denki Kogyo Kk | Engine-oil monitor |
| NL8700277A (en) * | 1987-02-05 | 1988-09-01 | Livestock Control Holding | DEVICE FOR VACUUM AND DROPPING A LIQUID. |
| DE3833408C1 (en) * | 1988-10-01 | 1990-01-04 | Juergen 5223 Nuembrecht De Bethkenhagen | Capillary tube |
| DE3932112C2 (en) * | 1989-09-26 | 1999-09-23 | Sarstedt Ag & Co | Blood collection device |
| US5230864A (en) * | 1991-04-10 | 1993-07-27 | Eastman Kodak Company | Gravity assisted collection device |
| US5257984A (en) * | 1991-10-02 | 1993-11-02 | Norfolk Scientific, Inc. | Blood collector |
| US5254312A (en) * | 1992-05-18 | 1993-10-19 | Staebler Charles R | Apparatus for collecting a blood sample from a sealed tube |
| JP3585236B2 (en) * | 1993-10-28 | 2004-11-04 | アイ−スタット コーポレーション | Liquid sample collection and introduction device |
| US5460782A (en) * | 1994-07-18 | 1995-10-24 | Safe-Tec Clinical Products, Inc. | Automatic filling micropipette with dispensing means |
| DE29723371U1 (en) * | 1996-05-17 | 1998-08-06 | Mercury Diagnostics Inc | Device for squeezing body fluid from a puncture |
| GB9917325D0 (en) | 1999-07-23 | 1999-09-22 | Clinical Diagnostic Chemicals | Apparatus for collecting a liquid sample |
| WO2005046437A2 (en) * | 2003-11-05 | 2005-05-26 | Separation Technology, Inc. | Disposable fluid sample collection device |
| JP1565699S (en) * | 2016-01-12 | 2016-12-19 | ||
| CN105891457A (en) * | 2016-06-03 | 2016-08-24 | 南京航空航天大学 | Ultrasonic blood flow distribution device based on capillarity and working method thereof |
| JP6790556B2 (en) * | 2016-08-01 | 2020-11-25 | 凸版印刷株式会社 | Inspection unit |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3141336A (en) * | 1961-03-08 | 1964-07-21 | Beckman Instruments Inc | Pipette |
| DE1988396U (en) * | 1968-04-18 | 1968-06-27 | Siemens Ag | SAMPLE TUBES FOR TAKING UP BODY FLUIDS. |
| CH522395A (en) * | 1968-07-26 | 1972-05-15 | Micromedic Systems Inc | Test tube intended for percutaneous and digital blood sampling |
| US3718133A (en) * | 1971-01-12 | 1973-02-27 | Damon Corp | Container unit for liquid samples |
| US3926521A (en) * | 1973-02-21 | 1975-12-16 | Byron E Ginzel | Blood collecting and processing means |
| NL179870C (en) * | 1974-08-16 | 1986-12-01 | Sarstedt Kunststoff | BARREL FOR TAKING BLOOD WITH A CAPILLARY MOUTH. |
| US4024857A (en) * | 1974-12-23 | 1977-05-24 | Becton, Dickinson And Company | Micro blood collection device |
| US4210156A (en) * | 1978-04-24 | 1980-07-01 | Bennett Elmer T | Finger stick blood collection apparatus |
-
1977
- 1977-11-18 DE DE2751503A patent/DE2751503C2/en not_active Expired
-
1978
- 1978-11-09 AT AT0801978A patent/AT373138B/en not_active IP Right Cessation
- 1978-11-10 EP EP78101343A patent/EP0002038B1/en not_active Expired
- 1978-11-16 JP JP14052978A patent/JPS5485589A/en active Granted
- 1978-11-16 CA CA000316377A patent/CA1152402A/en not_active Expired
- 1978-11-17 IT IT51954/78A patent/IT1106402B/en active
- 1978-11-17 ES ES1978245916U patent/ES245916Y/en not_active Expired
-
1980
- 1980-08-18 US US06/178,908 patent/US4314570A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| AT373138B (en) | 1983-12-27 |
| ES245916U (en) | 1980-06-01 |
| ATA801978A (en) | 1983-05-15 |
| ES245916Y (en) | 1980-12-16 |
| EP0002038B1 (en) | 1981-01-07 |
| DE2751503C2 (en) | 1983-03-24 |
| US4314570A (en) | 1982-02-09 |
| JPS5485589A (en) | 1979-07-07 |
| JPS5711212B2 (en) | 1982-03-03 |
| EP0002038A1 (en) | 1979-05-30 |
| IT7851954A0 (en) | 1978-11-17 |
| DE2751503A1 (en) | 1979-05-23 |
| IT1106402B (en) | 1985-11-11 |
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Legal Events
| Date | Code | Title | Description |
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| MKEX | Expiry |