DE301415C - - Google Patents
Info
- Publication number
- DE301415C DE301415C DENDAT301415D DE301415DA DE301415C DE 301415 C DE301415 C DE 301415C DE NDAT301415 D DENDAT301415 D DE NDAT301415D DE 301415D A DE301415D A DE 301415DA DE 301415 C DE301415 C DE 301415C
- Authority
- DE
- Germany
- Prior art keywords
- suction
- pipette
- screw
- blood
- piston
- 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.)
- Active
Links
- 210000004369 Blood Anatomy 0.000 claims description 12
- 239000008280 blood Substances 0.000 claims description 12
- 241001465754 Metazoa Species 0.000 claims description 2
- 238000010241 blood sampling Methods 0.000 claims description 2
- 210000001736 Capillaries Anatomy 0.000 description 5
- 210000003811 Fingers Anatomy 0.000 description 2
- 210000003813 Thumb Anatomy 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
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
- A61B5/150053—Details for enhanced collection of blood or interstitial fluid at the sample site, e.g. by applying compression, heat, vibration, ultrasound, suction or vacuum to tissue; for reduction of pain or discomfort; Skin piercing elements, e.g. blades, needles, lancets or canulas, with adjustable piercing speed
- A61B5/150061—Means for enhancing collection
- A61B5/150099—Means for enhancing collection by negative pressure, other than vacuum extraction into a syringe by pulling on the piston rod or into pre-evacuated tubes
-
- 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
- A61B5/150221—Valves
-
- 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
- A61B5/150946—Means for varying, regulating, indicating or limiting the speed or time of blood collection
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Medical Informatics (AREA)
- Surgery (AREA)
- Hematology (AREA)
- Biophysics (AREA)
- Pathology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Veterinary Medicine (AREA)
- Molecular Biology (AREA)
- Physics & Mathematics (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Dermatology (AREA)
- Manufacturing & Machinery (AREA)
- Pain & Pain Management (AREA)
- Sampling And Sample Adjustment (AREA)
- Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
Description
KAISERLICHESIMPERIAL
PATENTAMT.PATENT OFFICE.
KLASSE-30 Ä. GRUPPEl.CLASS-30 Ä. GROUP
Der Gegenstand vorliegender Erfindung ist ein Instrument zur Entnahme kleiner Blutmengen aus dem Körper von Menschen oder Tieren.The subject of the present invention is an instrument for drawing small amounts of blood from the body of humans or animals.
Der Schwerpunkt des Instruments liegt darin, daß es den Arzt, der einen Kranken behandelt, in den Stand setzt, dem Körper des Kranken eine für gewisse Untersuchungen hinreichende kleinste Menge Blut zu entziehen, und zwar in einer solchen Weise, daß die Handhabung des Instruments für den Arzt eine möglichst bequeme ist und der Arzt gleichzeitig die Saugwirkung selbst in zuverlässiger Weise beobachten und dieselbe sofort unterbrechen kann, sobald die zu der Untersuchung erforderliche Blutmenge dem Körper entnommen ist, damit jede unnütz große Blutentnahme vermieden wird.The main focus of the instrument is that it helps the doctor to treat a sick person treats, enables the patient's body to conduct certain examinations to withdraw the smallest sufficient amount of blood in such a way that the Handling of the instrument is as comfortable as possible for the doctor and the doctor at the same time, observe the suction itself in a reliable manner and do the same immediately can interrupt as soon as the body has received the amount of blood required for the examination is removed so that any unnecessarily large blood sampling is avoided.
Die bisher zu derartigen Blutentnahmen dienenden Pipetten waren in bezug auf ihre Handhabung unbequem und unhygienisch und ermöglichten auch nicht eine peinlich genaue Bemessung einer so kleinen Menge, wie sie in der Regel nur erforderlich ist.The pipettes previously used for such blood withdrawals were with regard to theirs Handling inconvenient and unhygienic and also did not enable meticulous accuracy Measurement of such a small amount as is usually only necessary.
Es ist bekannt, zur Blutentnahme Saugvorrichtungen mit einer Pipette zu verbinden. Das sorgfältige Aufsaugen des Blutes in kapillare Pipetten geschieht hier durch Ausschrauben einer mit sehr feinem Gewinde versehenen Saugschraube aus einem Hohlkörper, der mit der zu füllenden Pipette nicht starr verbunden wird. Dieser Hohlkörper, die Saugkammer, wird unmittelbar an der die Pipette führenden Hand in solcher Lage befestigt, daß der die Blutentnahme bewerkstelligende Arzt mit der zweiten vollständig freien Hand in bequemster Weise die Mikrometerschraube bewegen und dabei gleichzeitig die Saugwirkung zuverlässig beobachten kann.It is known to connect suction devices to a pipette for taking blood. The blood is carefully sucked up into capillary pipettes by unscrewing them a suction screw with a very fine thread made of a hollow body that is not rigid with the pipette to be filled is connected. This hollow body, the suction chamber, is directly attached to the pipette leading hand fixed in such a position that the doctor arranging the blood sample move the micrometer screw in the most comfortable way with the second completely free hand and at the same time can reliably observe the suction effect.
Auf der Zeichnung ist eine Ausführungsform des Erfindungsgegenstandes inThe drawing shows an embodiment of the subject matter of the invention in
Fig. ι im Aufriß,Fig. Ι in elevation,
Fig. 2 im Grundriß,Fig. 2 in plan,
Fig. 3 in einem Schnitte dargestellt.Fig. 3 shown in a section.
Auf der oberen Platte P einer federnden Klammer K ist mittels einer Schraube T eine Hülse H befestigt. Wird die Schraube T nicht zu fest angezogen, so kann sie noch samt der Hülse H auf der Platte P nach Belieben gedreht werden. In der Hülse H sitzt ein rohrförmiger Hohlkörper R ■— Saugkammer — mit einem Muttergewinde, in welches die Saugschraube 5 paßt. Das andere Ende der Saugkammer R trägt einen Ansatz F mit wellenförmig gerippter Oberfläche.A sleeve H is fastened to the upper plate P of a resilient clamp K by means of a screw T. If the screw T is not tightened too tightly, it can still be rotated together with the sleeve H on the plate P as desired. In the sleeve H sits a tubular hollow body R ■ - suction chamber - with a nut thread into which the suction screw 5 fits. The other end of the suction chamber R carries a shoulder F with a wavy ribbed surface.
Über diesen Ansatz F kann ein Gummischlauch G luftdicht gezogen werden, dessen freies Ende an die Pipette M luftdicht angesetzt werden kann, in welche das Blut eingesogen werden soll, z. B. an eine kapillare Meßpipette.A rubber hose G can be pulled airtight over this approach F , the free end of which can be attached airtight to the pipette M into which the blood is to be sucked, e.g. B. to a capillary measuring pipette.
Die zweckmäßige Gebrauchsweise des gezeichneten Instruments ist folgende :The appropriate use of the drawn instrument is as follows:
Die Saugkammer R wird mit Hilfe derThe suction chamber R is with the help of
Klammer K zum Beispiel an dem vierten Finger der linken Hand befestigt. Die mit der Saugkammer R durch den Gummischlauch G verbundene Pipette M wird zwischen Daumen und Zeigefinger der linken Hand gefaßt und ihr freies Ende auf der Einstichstelle in das herausgequollene Bluttröpfchen gesetzt. Durch Drehung der Schraube S mit zwei Fingern der rechten Hand im Sinne des AusschraubensFor example, clip K attached to the fourth finger of the left hand. The pipette M connected to the suction chamber R by the rubber tube G is grasped between the thumb and forefinger of the left hand and its free end is placed on the puncture site in the blood droplet that has oozed out. By turning the screw S with two fingers of the right hand in the sense of unscrewing
ίο wird die gewünschte Blutmenge in die Pipette eingesaugt. Durch Wiedereinschrauben der Schraube 5 läßt sich die aufgesogene Menge wieder vollständig entleeren.ίο the desired amount of blood is in the pipette sucked in. By screwing in the screw 5 again, the amount absorbed completely empty again.
Da Pipette und Saugschraube 5 nicht in starrer Verbindung stehen, wird die Saugspitze einer kapillaren Pipette bei der Tätigkeit des Ansaugens (durch Drehen der Saug schraube) aus dem Blutstropfen nicht heraus · geschleudert. Dadurch wird das störende Eintreten von Luftblasen in die Meßkapillare verhütet. Der Untersucher kann in bequemer Stellung des Kopfes die Untersuchung vornehmen, so daß er z. B. die feine Einteilung der Meßkapillare deutlich sehen kann.Since the pipette and suction screw 5 are not rigidly connected, the suction tip a capillary pipette during the suction activity (by turning the suction screw) from the drop of blood hurled. This prevents air bubbles from entering the measuring capillary prevent. The examiner can carry out the examination in a comfortable position of the head, so that he z. B. can clearly see the fine division of the measuring capillary.
Zwischen dem Ansatz F und der Saugkammer R kann ein Dreiweghahn vorgesehen sein, der in einer Stellung die Saugkammer R nicht mehr mit dem Ansatz F, sondern mit der Außenluft verbindet. In dieser Stellung kann man die Saugschraube S einschrauben, ohne die Pipette zu entleeren; bringt man nachher den Dreiweghahn in seine ursprüngliche Stellung zurück, so kann man die Pipette durch nochmaliges Ausschrauben der Schraube S noch mehr füllen.A three-way cock can be provided between the attachment F and the suction chamber R , which in one position no longer connects the suction chamber R with the attachment F, but with the outside air. In this position you can screw in the suction screw S without emptying the pipette; If you then return the three-way stopcock to its original position, you can fill the pipette even more by unscrewing the screw S again.
Claims (2)
Publications (1)
Publication Number | Publication Date |
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DE301415C true DE301415C (en) |
Family
ID=555292
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DENDAT301415D Active DE301415C (en) |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE301415C (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4535770A (en) * | 1983-11-02 | 1985-08-20 | Lemole Gerald M | Cardiovascular tourniquet |
US6489399B1 (en) | 2000-07-31 | 2002-12-03 | Molecular Optoelectronics Corp. | Dye-appended polymers for broadband fiber optic devices |
-
0
- DE DENDAT301415D patent/DE301415C/de active Active
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4535770A (en) * | 1983-11-02 | 1985-08-20 | Lemole Gerald M | Cardiovascular tourniquet |
US6489399B1 (en) | 2000-07-31 | 2002-12-03 | Molecular Optoelectronics Corp. | Dye-appended polymers for broadband fiber optic devices |
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