DE19726141A1 - Neurotrokar - Google Patents

Neurotrokar

Info

Publication number
DE19726141A1
DE19726141A1 DE19726141A DE19726141A DE19726141A1 DE 19726141 A1 DE19726141 A1 DE 19726141A1 DE 19726141 A DE19726141 A DE 19726141A DE 19726141 A DE19726141 A DE 19726141A DE 19726141 A1 DE19726141 A1 DE 19726141A1
Authority
DE
Germany
Prior art keywords
head
instrument
angle
neuronal
needle
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Withdrawn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
DE19726141A
Other languages
English (en)
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.)
Daum 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 DE19726141A priority Critical patent/DE19726141A1/de
Priority to DE29719526U priority patent/DE29719526U1/de
Priority to DE19808220A priority patent/DE19808220B4/de
Publication of DE19726141A1 publication Critical patent/DE19726141A1/de
Priority to US10/226,364 priority patent/US20030040753A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/34Trocars; Puncturing needles
    • A61B17/3472Trocars; Puncturing needles for bones, e.g. intraosseus injections
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/34Trocars; Puncturing needles
    • A61B17/3403Needle locating or guiding means
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/34Trocars; Puncturing needles
    • A61B17/3462Trocars; Puncturing needles with means for changing the diameter or the orientation of the entrance port of the cannula, e.g. for use with different-sized instruments, reduction ports, adapter seals
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/34Trocars; Puncturing needles
    • A61B2017/348Means for supporting the trocar against the body or retaining the trocar inside the body
    • A61B2017/3492Means for supporting the trocar against the body or retaining the trocar inside the body against the outside of the body
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B90/00Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
    • A61B90/10Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges for stereotaxic surgery, e.g. frame-based stereotaxis
    • A61B90/11Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges for stereotaxic surgery, e.g. frame-based stereotaxis with guides for needles or instruments, e.g. arcuate slides or ball joints

Landscapes

  • Health & Medical Sciences (AREA)
  • Surgery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Molecular Biology (AREA)
  • General Health & Medical Sciences (AREA)
  • Pathology (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Medical Informatics (AREA)
  • Veterinary Medicine (AREA)
  • Animal Behavior & Ethology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Public Health (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)
  • Medicines Containing Material From Animals Or Micro-Organisms (AREA)
  • Preparation Of Compounds By Using Micro-Organisms (AREA)
  • External Artificial Organs (AREA)
  • Surgical Instruments (AREA)

Description

In der modernen Neurochirurgie möchte man durch möglichst geringe Öffnungen in den Hohlraum des Kopfes eindringen, um zum Beispiel Biopsien zu nehmen oder Tumore zu entfernen. Dies möchte man außerdem auch noch unter einem Sichtsystem, wie z. B. der Kernspintomographie durchführen. Herkömmliche stereotaktische Stellvorrichtungen für derartige Interventionen sind aufwendig und beziehen ihren Referenzpunkt nicht am Kopf, sondern am Operationstisch. Der Kopf des Patienten kann sich jedoch in Bezug auf diesen Operationstisch bewegen. Hier wurden komplizierte Haltevorrichtungen erstellt. All diese Dinge sind sehr groß und teuer. Die Erfindung hat zum Ziel, eine kleine Lösung, die eventuell auch als Kurzzeitimplantat konzipiert sein kann, darzulegen. Die Erfindung wird in den folgenden Figuren erläutert:
Fig. 1 Ansicht der Neurotrokarvorrichtung,
Fig. 2 Schnitt durch die Neurotrokarvorrichtung,
Fig. 3 Ansicht der Neurotrokarvorrichtung mit einer Neurobiopsienadel,
Fig. 4 Perspektivische Ansicht von Fig. 3.
In Fig. 1 ist die Neurotrokarvorrichtung 1 gezeigt. Sie besteht aus der Befestigungsplatte 2 und der Nadelhalterung 3, die mittels eines Kugelgelenkes 15 in der Befestigungsplatte sitzt. Die Nadelhalterung weist eine Instrumenteneinführröhre vor, die vorzugsweise als kreisrunde Bohrung ausgestaltet ist. Es kann sich auch jede andere Geometrie anbieten. Festgestellt wird das Kugelgelenk 15 zur Befestigungsplatte 2 mittels einer Klemmvorrichtung 5, die durch eine Rändelschraube 14 bedient werden kann. Ein Instrument kann selbst mittels einer separaten Fixiervorrichtung 4 in der Nadelhalterung gehalten werden.
Die Vorrichtung ist aus derartigen Materialien konzipiert, daß sie im Kernspintomographen einsetzbar ist, nicht deflektiert und auch keine wesentlichen Bildverzerrungen, sogenannte Bildartefakte setzt. Als Materialien können hier Titanlegierungen angewendet werden, wie sie in der Patentschrift DE 195 31 117.5-35 dargestellt sind. Ebenso kann das Material aus Kunststoff sein, aus Keramik oder aus verchromten Messing- oder Aluminiumlegierungen bestehen. Die Nadelhalterung 3 kann aus dem zur Befestigungsplatte stehendem Lot 13 um den Winkel α herausgedreht werden. Nach Durchbohren der Schädeldecke wird die Vorrichtung mittels eines Schneidgewindes 6, was sich unterhalb der Befestigungsplatte 2 befindet, in die Schädeldecke gedreht und sitzt fest an dem Schädel.
Fig. 3 und 4 zeigen, wie eine Nadel oder ein Instrument in die Vorrichtung eingeführt werden kann. Die Nadel 7 ist durch die Fixiervorrichtung 4 in einem festen Winkel α in die Vorrichtung 1 eingefügt. Die Einstechtiefe wird über die Fixiervorrichtung 4 eingestellt.
Nach einer ersten Anwendung kann die Nadel entfernt werden, der Neurotrokar bleibt an Ort und Stelle und dient als Führungs- und Positionierhilfe für weitere Instrumente. Bei Bedarf kann er auch steril verschlossen werden.
Im Fall der Fig. 3 ist eine neuronale Aspirationsbiopsienadel gezeigt mit einer Nadelspitze, die als Rundschliff konzipiert ist. Die Nadel verfügt über einen Führungsdraht 10 sowie einem Schlauchverbinder, der z. B. als Luer-Lock-Anschluß ausgeführt sein kann 8 und einem Führungsdrahtfingergriff 9 zum Bedienen des Führungsdrahtes.
Bezugszeichenliste
1
Vorrichtung/Trokar
2
Befestigungsplatte
3
Nadelhalter, Instrumentenführung
4
Fixiervorrichtung, Instrumentenführung
5
Klemmvorrichtung
6
Schneidgewinde
7
Nadel
8
Schlauchverbinder, z. B. "Luer-Lock"
9
Führungsdrahtfingergriff
10
Führungsdraht
11
Nadelspitze mit Rundschliff
12
Instrumenteneinführröhre
13
Lot zur Ebene der Befestigungsplatte
14
Rändelschraube
15
Kugelgelenk

Claims (5)

1. Vorrichtung zur Einführung von medizinischem Besteck in den neuronalen Bereich des Kopfes, dadurch gekennzeichnet, daß diese z. B. mittels eines Schneidgewindes (6) in den Schädelknochen fest eingedreht werden kann und ein Instrument (4) in einem definierten Raumwinkel eingeführt werden kann.
2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß mittels einer Klemmvorrichtung (5) der Winkel α, der sich ergibt aus der Senkrechten (13) zur Befestigungsplatte und der Achse der rohrförmigen Einfuhrröhre (12), einstellbar ist.
3. Vorrichtung nach einem der oberen Ansprüche, dadurch gekennzeichnet, daß die eingeführten Instrumente in einer definierten Position mittels einer Klemmvorrichtung (14) fixiert werden können.
4. Vorrichtung nach einem der oberen Ansprüche, dadurch gekennzeichnet, daß sie steril verschließbar ist und für einige Zeit im Patienten verbleiben kann und eine einmal eingestellte Position später wieder erreicht werden kann.
5. Vorrichtung nach einem der oberen Ansprüche, dadurch gekennzeichnet, daß diese aus einem biokompatiblen Material gefertigt ist, welches im Kernspintomographen einsetzbar ist und keine störenden Bildverzerrungen, sogenannte Artefakte aufweist, wie Keramik, titanhaltige Legierungen, Kunststoff oder verchromte Messing- oder Aluminiumlegierungen.
DE19726141A 1997-06-19 1997-06-19 Neurotrokar Withdrawn DE19726141A1 (de)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DE19726141A DE19726141A1 (de) 1997-06-19 1997-06-19 Neurotrokar
DE29719526U DE29719526U1 (de) 1997-06-19 1997-11-04 Neurotrokar
DE19808220A DE19808220B4 (de) 1997-06-19 1998-02-27 Nadeltrokar
US10/226,364 US20030040753A1 (en) 1997-06-19 2002-08-22 Cranial guide device and methods

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19726141A DE19726141A1 (de) 1997-06-19 1997-06-19 Neurotrokar

Publications (1)

Publication Number Publication Date
DE19726141A1 true DE19726141A1 (de) 1999-01-28

Family

ID=7833078

Family Applications (2)

Application Number Title Priority Date Filing Date
DE19726141A Withdrawn DE19726141A1 (de) 1997-06-19 1997-06-19 Neurotrokar
DE29719526U Expired - Lifetime DE29719526U1 (de) 1997-06-19 1997-11-04 Neurotrokar

Family Applications After (1)

Application Number Title Priority Date Filing Date
DE29719526U Expired - Lifetime DE29719526U1 (de) 1997-06-19 1997-11-04 Neurotrokar

Country Status (2)

Country Link
US (1) US20030040753A1 (de)
DE (2) DE19726141A1 (de)

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Citations (2)

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