DE19648246A1 - Vena cava catheter device for use with nuclear spin equipment - Google Patents

Vena cava catheter device for use with nuclear spin equipment

Info

Publication number
DE19648246A1
DE19648246A1 DE1996148246 DE19648246A DE19648246A1 DE 19648246 A1 DE19648246 A1 DE 19648246A1 DE 1996148246 DE1996148246 DE 1996148246 DE 19648246 A DE19648246 A DE 19648246A DE 19648246 A1 DE19648246 A1 DE 19648246A1
Authority
DE
Germany
Prior art keywords
filter
artifact
vena cava
wire
artefact
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.)
Withdrawn
Application number
DE1996148246
Other languages
German (de)
Inventor
Axel Winkel
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.)
Mri Devices Daum 19061 Schwerin De GmbH
Original Assignee
Daum GmbH
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 Daum GmbH filed Critical Daum GmbH
Priority to DE1996148246 priority Critical patent/DE19648246A1/en
Publication of DE19648246A1 publication Critical patent/DE19648246A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L29/00—Materials for catheters, medical tubing, cannulae, or endoscopes or for coating catheters
    • A61L29/14—Materials characterised by their function or physical properties, e.g. lubricating compositions
    • A61L29/18—Materials at least partially X-ray or laser opaque
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L29/00—Materials for catheters, medical tubing, cannulae, or endoscopes or for coating catheters
    • A61L29/02—Inorganic materials
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R33/00—Arrangements or instruments for measuring magnetic variables
    • G01R33/20—Arrangements or instruments for measuring magnetic variables involving magnetic resonance
    • G01R33/28—Details of apparatus provided for in groups G01R33/44 - G01R33/64
    • G01R33/285—Invasive instruments, e.g. catheters or biopsy needles, specially adapted for tracking, guiding or visualization by NMR
    • 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
    • A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
    • A61M25/0105—Steering means as part of the catheter or advancing means; Markers for positioning
    • A61M25/0127—Magnetic means; Magnetic markers

Abstract

The catheter (4) has a filter (5) mounted at the end of a superelastic guide wire (1) made from nickel-titanium. The guide wire may joined with an artefact producing second wire (2) in a shrink sleeve. This artefact-producing material clearly shows the filter position under MRI. Alternatively the guide wire may be coated with an artefact producing material and cladded with plastics. The filter may be made of nickel-titanium and may be embedded in a shrink sleeve with an artefact producing wire. Alternatively, an artefact-producing material is absorbed onto the nickel-titanium of the filter, or the filter may carry a marker of artefact-producing material.

Description

Die Erfindung betrifft eine Vorrichtung nach dem Oberbegriff des Anspruch 1.The invention relates to a device according to the preamble of claim 1.

Problemproblem

Heutzutage werden interventionelle Katheter für zum Beispiel Blutfilter, insbesondere Vena Cava Filter, unter Computer- oder Kernspintomographiesicht geschoben. Im Zuge der Weiterentwicklung der Kernspintomographie ist es aber auf der Grund der erheblich geringeren Strahlenbelastung für Patient und Arzt wünschenswert, solche Eingriffe auch unter MRI durchzuführen. Daher werden Materialien benötigt, die im Kernspintomographen einen definierten Bildartefakt (Artefakt, Bildverzerrung, Bildverfälschung) zeigen, um erkennbar zu sein. Normale in der Medizintechnik verwendete Materialien wie Edelstahle oder andere ferromagnetische Materialien zeigen einen zu großen Artefakt, so daß das Bild stark gestört wird. Würde man andererseits völlig artefaktfreies Material wie Kunststoff oder Keramik benutzen, so könnte man die Vorrichtungen nicht im Kernspintomographen sichtbar machen. Es ist also ein definierter Artefakt erwünscht. Zur Thrombosetherapie schwangerer Frauen wird bisher ein Vena-Cava-Filter gesetzt, um eine Embolie während der Thrombolyse zu vermeiden. Dieser Vena-Cava-Filter wird normalerweise unter Röntgensicht gesetzt. Gerade bei schwangeren Frauen ist dies jedoch eine unzumutbare Strahlenbelastung der Föten. Da der Katheter selbst aus Kunststoff ist, besteht das Problem vornehmlich darin, den Führungsdraht/Mandrin des Katheters und eventuell den Filter selbst aus einem kernspintauglichen Niedrigartefaktmaterial herzustellen. Ebenso kann die Filtervorrichtung 5 selbst aus Nickeltitan mit einem Beidraht oder aufgedampfter artefaktgebender Schicht hergestellt sein. Die Erfindung setzt sich zum Ziel, dieses Problem zu lösen.Nowadays, interventional catheters for, for example, blood filters, in particular vena cava filters, are pushed under a computer or magnetic resonance imaging view. In the course of the further development of magnetic resonance imaging, it is desirable because of the considerably lower radiation exposure for the patient and doctor to carry out such interventions also under MRI. Therefore, materials are needed that show a defined image artifact (artifact, image distortion, image distortion) in the magnetic resonance tomograph in order to be recognizable. Normal materials used in medical technology such as stainless steel or other ferromagnetic materials show an artifact that is too large, so that the image is strongly disturbed. On the other hand, if one were to use completely artifact-free material such as plastic or ceramic, the devices could not be made visible in the magnetic resonance scanner. A defined artifact is therefore desirable. A vena cava filter has so far been used for thrombosis therapy in pregnant women in order to avoid embolism during thrombolysis. This vena cava filter is usually placed under an x-ray view. Especially in pregnant women, however, this is an unacceptable radiation exposure to the fetuses. Since the catheter itself is made of plastic, the problem primarily consists in producing the guidewire / stylet of the catheter and possibly the filter itself from a low-artifact material suitable for nuclear spin. Likewise, the filter device 5 itself can be made of nickel titanium with a drain wire or vapor-deposited artifact-imparting layer. The aim of the invention is to solve this problem.

Lösungsolution

Die erfinderische Lösung besteht in der definierten Einbringung eines artefaktbildenden Materials in den Katheter sowie den Filter der Vena-Cava-Filter-Vorrichtung.The inventive solution consists in the defined introduction of an artifact-forming material in the catheter and the filter of the vena cava filter device.

Fig. 1 zeigt einen solchen erfinderischen Katheter in aufgeschnittener Darstellung. Fig. 1 shows such an inventive catheter in a cut view.

Der Katheter besteht aus einem superelastischen Mandrinmaterial wie z. B. Nickeltitan oder einem anderen Kunststoff oder einem anderen herkömmlich genutzten Material. Auf dieses superelastische oder elastische Material wird ein artefaktbildendes Material zum Beispiel als Draht, als artefaktgebende Markierung oder aufgedampfte Schicht mit Hilfe eines ummantelnden Schrumpfschlauches oder einer Schrumpfschlauchhülle befestigt. The catheter consists of a super elastic stylet material such as. B. nickel titanium or one other plastic or other conventionally used material. On this super elastic or elastic material becomes an artifact-forming material, for example as wire, as Artifact-marking or vapor-deposited layer with the help of a coating Shrink tube or a shrink sleeve attached.  

Dabei erfolgt die Dimensionierung des artefaktbildenden Materials genau so, daß der Vena-Cava-Fil­ ter bzw. der Mandrin des Filters im Kernspintomographen ausreichend sichtbar ist. Sodann wird dieser aus den Materialien 1, 2 und 3 bestehende Mandrin in den Katheter 4 geschoben, der wiederum den Vena-Cava-Filter 5 trägt.The artifact-forming material is dimensioned in such a way that the vena cava filter or the stylet of the filter is sufficiently visible in the magnetic resonance scanner. Then this stylet consisting of the materials 1 , 2 and 3 is pushed into the catheter 4 , which in turn carries the vena cava filter 5 .

Ebenfalls kann sich der Vena-Cava-Filter aus Nickeltitan mit einem definiert artefaktgebenden Beidraht in einem Schrumpfschlauch bestehen oder der Vena-Cava-Filter ist mit einer artefaktbildenden Substanz beschichtet.The Vena Cava filter can also be made of nickel titanium with a defined artifact There is a wire in a shrink tube or the vena cava filter is with one Artifact-forming substance coated.

BezugszeichenlisteReference list

11

superelastisches Material
super elastic material

22nd

artefaktbildendes Material
artifact-forming material

33rd

Schrumpfschlauchhülle
Shrink sleeve

44th

Katheter
catheter

55

Vena-Cava-Filter
Vena cava filter

Claims (1)

Vena Cava Kathetervorrichtung mit einem Mandrin/Führungsdraht und einem Filter dadurch gekennzeichnet, daß der Mandrin/Führungsdraht aus Nickeltitandraht gefertigt und zusammen mit einem artefaktgebenden Draht in einem Schrumpfschlauch vereint ist oder der Nickeltitandraht mit einem artefaktgebenden Material beschichtet und mit Kunststoff ummantelt ist und/oder der Filter aus Nickeltitan mit einem artefaktgebenden Beidraht im Schrumpfschlauch eingebettet ist oder der Nickeltitandraht des Filters mit einer artefaktgebenden Substanze bedampft ist oder der Filter eine Markierung z. B. in Form eines Ringes aus artefaktgebender Substanz trägt, die eine Position unter dem MR deutlich anzeigt.Vena Cava catheter device with a stylet / guidewire and a filter, characterized in that the stylet / guidewire is made of nickel titanium wire and is combined with an artifact-providing wire in a shrink tube, or the nickel titanium wire is coated with an artifact-providing material and coated with plastic and / or Filter made of nickel titanium is embedded in the shrink tube with an artifact-providing drain wire or the nickel titanium wire of the filter is vapor-coated with an artifact-imparting substance or the filter has a marking e.g. B. wearing in the form of a ring of artifact substance, which clearly indicates a position under the MR.
DE1996148246 1996-11-21 1996-11-21 Vena cava catheter device for use with nuclear spin equipment Withdrawn DE19648246A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE1996148246 DE19648246A1 (en) 1996-11-21 1996-11-21 Vena cava catheter device for use with nuclear spin equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1996148246 DE19648246A1 (en) 1996-11-21 1996-11-21 Vena cava catheter device for use with nuclear spin equipment

Publications (1)

Publication Number Publication Date
DE19648246A1 true DE19648246A1 (en) 1998-05-28

Family

ID=7812380

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1996148246 Withdrawn DE19648246A1 (en) 1996-11-21 1996-11-21 Vena cava catheter device for use with nuclear spin equipment

Country Status (1)

Country Link
DE (1) DE19648246A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999059479A1 (en) * 1998-05-19 1999-11-25 Regents Of The University Of Minnesota Device for endovascular treatment
DE10029738A1 (en) * 2000-06-23 2002-01-10 Daum Gmbh I Ins Device for introducing catheter into human or animal vessel for use in nuclear spin tomography has metal wire front section and main section of plastics inert to magnetic resonance
WO2006036786A2 (en) * 2004-09-27 2006-04-06 Cook Incorporated Mri compatible metal devices
DE10103698B4 (en) * 2000-06-23 2011-11-24 Mri Devices Daum Gmbh Core-compatible guidewire

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3933159A1 (en) * 1988-10-18 1990-04-19 Olympus Optical Co Introductory endoscopic section - with optical fibre bunches for image with lens and for light
WO1991015251A1 (en) * 1990-04-02 1991-10-17 W.L. Gore & Associates, Inc. A catheter guidewire device having a covering of fluoropolymer tape
WO1994023782A1 (en) * 1993-04-14 1994-10-27 Pharmacyclics, Inc. Medical devices and materials having enhanced magnetic images visibility
DE4333910A1 (en) * 1993-10-05 1995-04-06 Reiner Gessler Guide wire for medical instruments and method for its manufacture
DE4030998C2 (en) * 1989-10-04 1995-11-23 Ernst Peter Prof Dr M Strecker Percutaneous vascular filter
EP0701836A1 (en) * 1994-09-19 1996-03-20 Cordis Europa N.V. MR-visible catheter
DE19500157A1 (en) * 1994-11-04 1996-05-09 Norbert Heske Hollow cannula for intracorporeal tissue examination made of plastic
DE69116351T2 (en) * 1990-01-19 1996-05-30 Pierre Gory Device for temporally inserting a blood filter into a vein in the human body
EP0744186A1 (en) * 1995-05-26 1996-11-27 Target Therapeutics, Inc. Super-elastic composite guidewire
DE19532569A1 (en) * 1995-09-04 1997-03-06 Thull Roger Material for implants, instruments or the like for use in magnetic resonance imaging

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3933159A1 (en) * 1988-10-18 1990-04-19 Olympus Optical Co Introductory endoscopic section - with optical fibre bunches for image with lens and for light
DE4030998C2 (en) * 1989-10-04 1995-11-23 Ernst Peter Prof Dr M Strecker Percutaneous vascular filter
DE69116351T2 (en) * 1990-01-19 1996-05-30 Pierre Gory Device for temporally inserting a blood filter into a vein in the human body
WO1991015251A1 (en) * 1990-04-02 1991-10-17 W.L. Gore & Associates, Inc. A catheter guidewire device having a covering of fluoropolymer tape
WO1994023782A1 (en) * 1993-04-14 1994-10-27 Pharmacyclics, Inc. Medical devices and materials having enhanced magnetic images visibility
DE4333910A1 (en) * 1993-10-05 1995-04-06 Reiner Gessler Guide wire for medical instruments and method for its manufacture
EP0701836A1 (en) * 1994-09-19 1996-03-20 Cordis Europa N.V. MR-visible catheter
DE19500157A1 (en) * 1994-11-04 1996-05-09 Norbert Heske Hollow cannula for intracorporeal tissue examination made of plastic
EP0744186A1 (en) * 1995-05-26 1996-11-27 Target Therapeutics, Inc. Super-elastic composite guidewire
DE19532569A1 (en) * 1995-09-04 1997-03-06 Thull Roger Material for implants, instruments or the like for use in magnetic resonance imaging

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999059479A1 (en) * 1998-05-19 1999-11-25 Regents Of The University Of Minnesota Device for endovascular treatment
US6463317B1 (en) 1998-05-19 2002-10-08 Regents Of The University Of Minnesota Device and method for the endovascular treatment of aneurysms
DE10029738A1 (en) * 2000-06-23 2002-01-10 Daum Gmbh I Ins Device for introducing catheter into human or animal vessel for use in nuclear spin tomography has metal wire front section and main section of plastics inert to magnetic resonance
DE10103698B4 (en) * 2000-06-23 2011-11-24 Mri Devices Daum Gmbh Core-compatible guidewire
WO2006036786A2 (en) * 2004-09-27 2006-04-06 Cook Incorporated Mri compatible metal devices
WO2006036786A3 (en) * 2004-09-27 2006-06-15 Cook Inc Mri compatible metal devices

Similar Documents

Publication Publication Date Title
DE69929078T2 (en) FILTER DISPENSER
DE69823214T2 (en) Kit for determining the length of catheters prior to their introduction
DE3706077C1 (en) Intravenous filter and device and method for preparing the filter for the operation
DE102005022120B4 (en) Catheter, catheter device and diagnostic imaging device
EP0765144B1 (en) Vena cava thrombus filter
DE69827230T2 (en) SYSTEM FOR ATTACHING A DRAINAGE CATHETER
EP0591712B1 (en) Device for marking points on the body used for medical examination
DE60117401T2 (en) GUIDE WIRE WITH MARKING SEGMENT FOR LENGTH ASSESSMENT
EP1765428B1 (en) Catheter guide wire, in particular for cardio-vascular interventions
DE69532267T2 (en) Stent implantation catheter
DE69829059T2 (en) INTRAVASCULAR CATHETER SYSTEM WITH A CHANGED ENVELOPE EXTENSION FOR IMAGING BY MEANS OF MAGNETIC RESONANCE AND METHOD
EP0832602A1 (en) Device for carrying out diagnostic and/or therapeutic heart procedures with a catheter
DE102007019328A1 (en) Method for the high-resolution representation of filigree vascular implants in angiographic images
WO1983002064A1 (en) Catheter for central veins
DE1566583A1 (en) catheter
DE3804849A1 (en) Device for removing blood clots from vessels
DE10159470A1 (en) Surgical device to be used in endoscopy, comprising pre-shaped wire tips for removal of slippery tissue
DE102004058122A1 (en) Medical image registration aid for landmarks by computerized and photon emission tomographies, comprises permeable radioactive substance is filled with the emission tomography as radiation permeable containers, a belt and patient body bowl
DE19648246A1 (en) Vena cava catheter device for use with nuclear spin equipment
DE102004015641B3 (en) Device for elimination of complete occlusion with IVUS monitoring
DE102004015642B3 (en) Device for elimination of complete occlusion with OCT monitoring
DE10340002B3 (en) Positioning device for positioning a patient
DE19823064C2 (en) Distributor for an intravascular catheter and its use
DE3937594A1 (en) Extracting spiral electrode from organ of human body - inserting thin drawing element in internal lumen of spiral until nearly reaching electrode head
WO1999060962A1 (en) Device for expanding and reconstructing the lacrimal duct of a human eye

Legal Events

Date Code Title Description
OM8 Search report available as to paragraph 43 lit. 1 sentence 1 patent law
8139 Disposal/non-payment of the annual fee
8170 Reinstatement of the former position
8139 Disposal/non-payment of the annual fee
8127 New person/name/address of the applicant

Owner name: MRI DEVICES DAUM GMBH, 19061 SCHWERIN, DE