DE3130454A1 - Catheter for the continuous withdrawal of blood and for infusion - Google Patents

Catheter for the continuous withdrawal of blood and for infusion

Info

Publication number
DE3130454A1
DE3130454A1 DE19813130454 DE3130454A DE3130454A1 DE 3130454 A1 DE3130454 A1 DE 3130454A1 DE 19813130454 DE19813130454 DE 19813130454 DE 3130454 A DE3130454 A DE 3130454A DE 3130454 A1 DE3130454 A1 DE 3130454A1
Authority
DE
Germany
Prior art keywords
blood
infusion
catheter
anticoagulant
withdrawal
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.)
Granted
Application number
DE19813130454
Other languages
German (de)
Other versions
DE3130454C2 (en
Inventor
Jürgen Dr.med. 8700 Würzburg Schrezenmeir
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to DE19813130454 priority Critical patent/DE3130454C2/en
Publication of DE3130454A1 publication Critical patent/DE3130454A1/en
Application granted granted Critical
Publication of DE3130454C2 publication Critical patent/DE3130454C2/en
Expired legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
    • A61M5/158—Needles for infusions; Accessories therefor, e.g. for inserting infusion needles, or for holding them on the body
    • A61M5/1582—Double lumen needles
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00—Catheters; Hollow probes
    • A61M25/0021—Catheters; Hollow probes characterised by the form of the tubing
    • A61M25/0023—Catheters; Hollow probes characterised by the form of the tubing by the form of the lumen, e.g. cross-section, variable diameter
    • A61M25/0026—Multi-lumen catheters with stationary elements
    • A61M25/003—Multi-lumen catheters with stationary elements characterized by features relating to least one lumen located at the distal part of the catheter, e.g. filters, plugs or valves
    • A61M2025/0031—Multi-lumen catheters with stationary elements characterized by features relating to least one lumen located at the distal part of the catheter, e.g. filters, plugs or valves characterized by lumina for withdrawing or delivering, i.e. used for extracorporeal circuit treatment
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00—Catheters; Hollow probes
    • A61M25/0021—Catheters; Hollow probes characterised by the form of the tubing
    • A61M25/0023—Catheters; Hollow probes characterised by the form of the tubing by the form of the lumen, e.g. cross-section, variable diameter
    • A61M25/0026—Multi-lumen catheters with stationary elements
    • A61M25/0032—Multi-lumen catheters with stationary elements characterized by at least one unconventionally shaped lumen, e.g. polygons, ellipsoids, wedges or shapes comprising concave and convex parts

Abstract

The proposed system permits infusion via a central venous access and simultaneous continous withdrawal of blood as is required in medicine, in particular, for systems in which infusions are controlled by a computer as a function of a current blood value, e.g. glucose. In accordance with the two functions, two catheter parts are housed in a cross-section: 1) a catheter for infusion and 2) a plastic hose for the continous withdrawal of blood, which terminates 10-15 cm before the infusion part. This blood withdrawal part has several eccentrically extending channels through which anticoagulant flows to the funnel-shaped end and is admixed there with the blood, without passing into the patient's blood stream, and an axial channel through which the mixture of blood and anticoagulant is aspirated.

Description

3es-chrXeUb;ung.3es-chrXeUb; ung.

Name : Dr. med. Jürgen Schrezenmeir Titel : Katheter zur kontinuierlichen Blutentnahme und Infusion Anwendungsgebiet : Dieser Katheter ermöglicht über einen zentralen Zugang gleichzeitig die kontinuierliche Blutentnahme und Infusion, wie dies in der Medizin, insbesondere für Systeme benötigt wird, in denen entsprechend einem aktuellen Blutwert wie z.B. Glukose, computergesteuert Infusionen vorgenommen werden.Name: Dr. med. Jürgen Schrezenmeir Title: Catheter for continuous Blood collection and infusion Area of application: This catheter enables a central access at the same time the continuous blood collection and infusion, such as this is needed in medicine, especially for systems in which accordingly a current blood value such as glucose, computer-controlled infusions will.

Stand der Technik : Ein System zur kontinuierlichen Blutentnahme aus einer peripheren Vene liegt in Form eines Doppellumenkatheters vor, dessen prinzipieller Aufbau aus einer Veröffentlichung von E.F. Pfeiffer et al (Eorm.-Met. Res.State of the art: A system for continuous blood collection a peripheral vein is in the form of a double lumen catheter, its principal Structure from a publication by E.F. Pfeiffer et al (Eorm.-Met. Res.

Suppl. Series 7, (1977), 95) hervorgeht. Suppl. Series 7, (1977), 95).

Kritik des Standes der Für die kontinuierliche Blutentnahme bei ungünstigen Technik : peripheren Gefäßverhältnissen bzw. zentralisiertem Kreislauf ist der periphere Gefäßanschluß ungeeignet bzw.Criticism of the state of the For continuous blood collection in the case of unfavorable Technique: peripheral vascular conditions or centralized circulation is the peripheral Vessel connection unsuitable or

oft nicht möglich. Außerdem ist in den kleinen Gefäßen der Peripherie häufig mit mechanischen Störungen durch Anliegen des Katheters bzw. Gefäßkollaps zu rechnen. often not possible. In addition, in the small vessels of the periphery often with mechanical disturbances due to contact with the catheter or vascular collapse to be expected.

Aufgabe : Mit dem vorgeschlagenen System wird ermöglicht, daß über einen zentralen Gefäßgang infundiert und gleichzeitig kontinuierlich Blut entnommen werden kann.Task: The proposed system enables over a central vascular duct is infused and blood is continuously withdrawn at the same time can be.

Lösung : In einem angenähert runden Querschnitt sind entsprechend den zwei Punktionen, zwei Katheterteile untergebracht -, 1. ein Katheter zur Infusion und 2. ein Kunststoffschlauch zur kontinuierlichen Blutentnahme, welcher ca. 15 om vor dem Infusionsteil endet. Dieser Blutentnahmeteil hat mehrere exzentrisch verlaufende Kanäle, durch die Antikeagulans zum trichterförmigen Ende fließt und sich dort mit Blut mischt, ohne in die Blutbahn des Patienten zu gelangen und einen axialen Kanal, durch den Blut -antikoagulans-Gemisch angesaugt wird.Solution: In an approximately round cross-section are corresponding the two punctures, two catheter parts housed -, 1. a catheter for infusion and 2. a plastic tube for continuous blood collection, which is approx om ends before the infusion part. This blood collection part has several eccentric running channels through which Antikeagulans flows to the funnel-shaped end and mixes with blood there without getting into the patient's bloodstream and becomes one axial channel through which the blood-anticoagulant mixture is sucked.

Erzielbare Vorteile : Möglichkeit, 1. aus einem zentralen Gefäß wie der vena subclavia kontinuierlich Blut zu entnehmen mit dem Vorteil der geringeren Störanfälligkeit dieses Gefäßzugangs und 2. über ein und denselben Zugang gleichzeitig zu infundieren.Achievable advantages: Possibility of 1. from a central vessel such as continuously withdrawing blood from the subclavian vein with the advantage of less This vascular access is susceptible to failure and 2. via one and the same access at the same time to infuse.

Beschreibung : Ein Ausführungsbeispiel dieses Systems ist in Zeichnung 4 und in einzelnen Details in Zeichnung 1-3 dargestellt und wird im folgenden näher beschrieben.Description: An embodiment of this system is shown in the drawing 4 and shown in detail in drawing 1-3 and will be explained in more detail below described.

In einem angenähert runden Querschnitt sind entsprechend der zwei Funktionen zwei Katheterteile untergebracht (Zeichnung 2), 1. ein Katheter zur Infusion, 2. ein Kunststoffschlauch zur Hlutentnahme. In an approximately round cross-section there are correspondingly two Functions two catheter parts housed (drawing 2), 1. a catheter for infusion, 2. a plastic tube to remove the hat.

Zu 1. To 1.

Der Infusionskatheter hat eine hinne, in der der Blutentnahmeschlauch aufgenommen wird (Zeichnung 2). The infusion catheter has a back that holds the blood collection tube is recorded (drawing 2).

Der Infusionsteil ragt ca. 15 cm über den Blutentnahmeteil hinaus, sodaß die Infusionslösung nicht mit der Blutentnahme interferieren kann (%eichnungr 4). The infusion part protrudes approx. 15 cm beyond the blood sampling part, so that the infusion solution cannot interfere with the blood sampling (% calibration no 4).

Zu 2. To 2.

Der Blutentnahmeteil ist ein Schlauch mit einem axialen Kanal und mehreren exzentrisch. verlaufenden Kanälen (Zeichnung 1). Durch die exzentrischen Kanäle wird Heparin (E 1,2,3,4) zugeführt, um das kontinuierlich angesaugte Blut nicht gerinnen zu lassen. Durch den axialen Kanal (B) wird das Blut Heparin-Gemisch angesaugt. Die Mischung von zugeführtem Heparin und angesaugtem Blut erfolgt in dem trichterförmigen Ende des Blutentnahmeschlauchs (Zeichnung 1). Hierbei sind die Kanalmündungen und der Trichterwinkel so aufeinander abgestimmt, daß Heparin nur zur Antikeagulation des angesaugten Bluts dient, nicht jedoch in die Blutbahn des Patienten gelangt. The blood collection part is a tube with an axial channel and several eccentric. running channels (drawing 1). Because of the eccentric Channels is supplied with heparin (E 1,2,3,4) to the continuously sucked blood not to curdle. The blood heparin mixture passes through the axial channel (B) sucked in. The mixture of supplied heparin and sucked blood takes place in the funnel-shaped end of the blood collection tube (drawing 1). Here are the channel mouths and the funnel angle so coordinated that heparin only serves to anticeagulate the sucked in blood, but not into the bloodstream of the patient.

Der axiale Kanal wird am proximalen Ende des lfatheters aus dem Blutentnahmeteil herausgefuhrt (Zeichnung 5), um zur Analysatorpumpe geführt zu werden. The axial channel is made from the blood sampling part at the proximal end of the catheter led out (drawing 5) to be led to the analyzer pump.

Der Zugang zum Gefäßsystem erfolgt über eine Metallkanülen- Kunststoffkanülenkombination entsprechend dem BraunülenR-System, wobei die Netallkanüle nach Punktion der Vene gezogen wird und der Katheter durch die verbleibende KunststoffkanüS ins Gefäß vorgeschoben wird. Diese Kanüle und der Katheter werden über eine Uberwurfmutter aneinander fixiert (Zeichnung 4).The vascular system is accessed via a metal cannula-plastic cannula combination according to the BraunulenR system, with the metal cannula after puncturing the vein is pulled and the catheter is advanced through the remaining plastic cannula into the vessel will. This cannula and the catheter are fixed to one another via a union nut (Drawing 4).

LeerseiteBlank page

Claims (1)

Patentansprüche Oberbegriff : Katheter zur kontinuierlichen Blutentnahme und Infusion, welcher erlaubt iiber einen Gafäßzugang gleichzeitig kontinuierlich Blut zu entnehmen und beliebige Lösungen zu infundieren.Claims Generic term: Catheter for continuous blood collection and infusion, which allows simultaneous continuous use via a gas vascular access Draw blood and infuse any solutions. Kennzeichnender Teil : Gekennzeichnet durch einen Infusionsteil und einen Blutentnahmeteil, welcher ca. 15 cm vor dem Inftisionsteil endet und mehrere Kanäle für die Zufuhr von Antikoagulans enthält, sowie einen Kanal zur Gewinnung von Blut-Antikoagulans-Gemisch und dessen Ende so gestaltet ist, daß das Austreten des Antikoagulans sich mit dem angesaugten Blut mischen kann, ohne daß Antikoagulans in die Blutbahn des Patienten gelangt.Identifying part: Identified by an infusion part and a blood collection part, which ends approx. 15 cm in front of the infusion part, and several Contains channels for the supply of anticoagulant, as well as a channel for extraction of blood-anticoagulant mixture and the end of which is designed so that the leakage of the anticoagulant can mix with the sucked blood without the anticoagulant gets into the patient's bloodstream.
DE19813130454 1981-07-23 1981-07-23 Catheter for continuous blood collection and infusion Expired DE3130454C2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19813130454 DE3130454C2 (en) 1981-07-23 1981-07-23 Catheter for continuous blood collection and infusion

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19813130454 DE3130454C2 (en) 1981-07-23 1981-07-23 Catheter for continuous blood collection and infusion

Publications (2)

Publication Number Publication Date
DE3130454A1 true DE3130454A1 (en) 1983-04-21
DE3130454C2 DE3130454C2 (en) 1985-04-04

Family

ID=6138322

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19813130454 Expired DE3130454C2 (en) 1981-07-23 1981-07-23 Catheter for continuous blood collection and infusion

Country Status (1)

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DE (1) DE3130454C2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3401452A1 (en) * 1984-01-17 1985-08-01 Hasko von Dipl.-Ing. Dr.med. 8000 München Sanden Catheter
WO2005113047A2 (en) * 2004-04-19 2005-12-01 Boston Scientific Limited Hybrid micro guide catheter

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2703087A1 (en) * 1977-01-26 1978-07-27 Tersteegen Bernd DOUBLE LUMEN CATHETER
DE2813275A1 (en) * 1978-03-28 1979-10-11 Fresenius Chem Pharm Ind DOUBLE LUMEN CATHETER
US4180068A (en) * 1978-04-13 1979-12-25 Motion Control, Incorporated Bi-directional flow catheter with retractable trocar/valve structure

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2703087A1 (en) * 1977-01-26 1978-07-27 Tersteegen Bernd DOUBLE LUMEN CATHETER
DE2813275A1 (en) * 1978-03-28 1979-10-11 Fresenius Chem Pharm Ind DOUBLE LUMEN CATHETER
US4180068A (en) * 1978-04-13 1979-12-25 Motion Control, Incorporated Bi-directional flow catheter with retractable trocar/valve structure

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
E.F.Pfeiffer et al Horm.Met.Res.Suppl. Series 7, 1977, S. 95 *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3401452A1 (en) * 1984-01-17 1985-08-01 Hasko von Dipl.-Ing. Dr.med. 8000 München Sanden Catheter
WO2005113047A2 (en) * 2004-04-19 2005-12-01 Boston Scientific Limited Hybrid micro guide catheter
WO2005113047A3 (en) * 2004-04-19 2006-02-09 Boston Scient Scimed Inc Hybrid micro guide catheter
US7887529B2 (en) 2004-04-19 2011-02-15 Boston Scientific Scimed, Inc. Hybrid micro guide catheter
US8372056B2 (en) 2004-04-19 2013-02-12 Boston Scientific Scimed, Inc. Hybrid micro guide catheter

Also Published As

Publication number Publication date
DE3130454C2 (en) 1985-04-04

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OM8 Search report available as to paragraph 43 lit. 1 sentence 1 patent law
OP8 Request for examination as to paragraph 44 patent law
8131 Rejection
8180 Miscellaneous part 1

Free format text: IN HEFT 51/83, SEITE 9936, SP. 3: DIE VEROEFFENTLICHUNG IST ZU STREICHEN

D2 Grant after examination
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee