DE29915805U1 - Rigid bronchoscope - Google Patents

Rigid bronchoscope

Info

Publication number
DE29915805U1
DE29915805U1 DE29915805U DE29915805U DE29915805U1 DE 29915805 U1 DE29915805 U1 DE 29915805U1 DE 29915805 U DE29915805 U DE 29915805U DE 29915805 U DE29915805 U DE 29915805U DE 29915805 U1 DE29915805 U1 DE 29915805U1
Authority
DE
Germany
Prior art keywords
bronchoscope
tube
rigid
inner lumen
rigid bronchoscope
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 - Lifetime
Application number
DE29915805U
Other languages
German (de)
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 DE29915805U priority Critical patent/DE29915805U1/en
Publication of DE29915805U1 publication Critical patent/DE29915805U1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/03—Measuring fluid pressure within the body other than blood pressure, e.g. cerebral pressure ; Measuring pressure in body tissues or organs
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A61B1/267—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor for the respiratory tract, e.g. laryngoscopes, bronchoscopes
    • A61B1/2676—Bronchoscopes

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Surgery (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Veterinary Medicine (AREA)
  • Biophysics (AREA)
  • Public Health (AREA)
  • General Health & Medical Sciences (AREA)
  • Pathology (AREA)
  • Animal Behavior & Ethology (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Pulmonology (AREA)
  • Otolaryngology (AREA)
  • Radiology & Medical Imaging (AREA)
  • Optics & Photonics (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Physiology (AREA)
  • Hematology (AREA)
  • Endoscopes (AREA)

Description

BeschreibungDescription

Starre Bronchoskope nach dem Stand der Technik haben eine Arbeitsöffnung, eine Öffnung für einen Lichtleiter mit Prisma oder einen integrierten Lichtleiter und einen Ansatz für konventionelle- und / oder Jet - Beatmung. Zusätzliche Rohre von der Patientenöffnung bis zur Arbeitsöffnung zur Entnahme von Atemgasproben sind bekannt. Der im Schutzanspruch angegebenen Erfindung liegt das Problem zugrunde, ein Bronchoskop zu schaffen, welches neben der Entnahme von Atemgas zur Beprobung die Messung des Innendrucks im starren Bronchoskop während der Beatmung erlaubt.Rigid bronchoscopes according to the state of the art have a working opening, an opening for a light guide with prism or an integrated light guide and an attachment for conventional and/or jet ventilation. Additional tubes from the patient opening to the working opening for taking respiratory gas samples are known. The invention specified in the protection claim is based on the problem of creating a bronchoscope which, in addition to taking respiratory gas for sampling, allows the internal pressure in the rigid bronchoscope to be measured during ventilation.

Dieses Problem wird mit dem im Schutzanspruch aufgeführten Merkmal gelöst.This problem is solved with the feature set out in the protection claim.

Mit der Erfindung wird erreicht, daß über das Rohr eine Beprobung des Atemgases und zeitgleich die Messung des Innendruckes im starren Bronchoskop möglich ist. Die ·...· Bohrung, über die das Rohr mit dem Innenlumen verbunden ist, sollte in einem «*.&phgr; The invention makes it possible to take a sample of the respiratory gas through the tube and at the same time to measure the internal pressure in the rigid bronchoscope. The ·...· bore through which the tube is connected to the inner lumen should be in a «*. &phgr;

Mindestabstand von 10 cm von der Arbeitsöffnung angebracht sein. Nach eigenenA minimum distance of 10 cm from the work opening must be provided.

Messungen des Druckverlaufs im Lumen von starren Bronchoskopen bei Jet - Beatmung;.,..Measurements of the pressure curve in the lumen of rigid bronchoscopes during jet ventilation;.,..

hat der resultierende Druck aus Jet - Beatmung und mitgerissener Umgebungsluft »..: the resulting pressure from jet ventilation and entrained ambient air ».. :

(Entrainment) einen Plateauverlauf, welcher ab 10 cm von der Arbeitsöffnung seinen Maximalwert erreicht. Somit muß sich das Rohr zur Messung des Innendrucks nicht über · die ganze Länge des Bronchoskops erstrecken. Für die zeitgleiche Entnahme von Proberr des Atemgases aus dem Innenlumen bei einem Entnahmegasfluß von 200 ml / min muß der Innendurchmesser des Rohres bei einer Länge bis 12 cm größer als 1,1 mm sein, um den Druckabfall durch den Strömungswiderstand, gleichbedeutend mit dem Meßfehler, kleiner 0,1 Torr zu halten.(Entrainment) a plateau curve which reaches its maximum value at 10 cm from the working opening. Thus, the tube for measuring the internal pressure does not have to extend over the entire length of the bronchoscope. For the simultaneous extraction of samples of the respiratory gas from the inner lumen with a sampling gas flow of 200 ml / min, the inner diameter of the tube must be greater than 1.1 mm for a length of up to 12 cm in order to keep the pressure drop due to the flow resistance, which is equivalent to the measurement error, less than 0.1 Torr.

Ein Ausführungsbeispiel wird anhand der Zeichnung dargestellt.An example of implementation is shown in the drawing.

Es bedeuten R = Rohr, B = Bohrung, A = Arbeitsöffnung und I = Innenlumen.Where R = tube, B = bore, A = working opening and I = inner lumen.

Das Rohr ( R ) hat im Abstand von 10 cm von der Arbeitsöffnung (A ) eine Verbindung mit dem Innenlumen (I) durch die Bohrung ( B ). In diesem Beispiel ist das Rohr ( R ) außerhalb des Bronchoskops geführt. An dem freien Ende des Rohres ( R ) werden überThe tube ( R ) is connected to the inner lumen (I) through the hole ( B ) at a distance of 10 cm from the working opening ( A ). In this example, the tube ( R ) is guided outside the bronchoscope. At the free end of the tube ( R )

ein Y - Verbindungsstück die Schläuche zur Verbindung mit dem Druckmeßgerät und dem Atemgasanalysegerät angeschlossen.A Y-connector connects the hoses to the pressure gauge and the respiratory gas analyzer.

Claims (1)

Starres Bronchoskop dadurch gekennzeichnet, daß im Abstand von ca. 10 cm von der Arbeitsöffnung (A) über ein innenliegendes Rohr (R) mit geringem Querschnitt oder über ein aussenliegendes Rohr mit geringem Querschnitt durch eine Bohrung (B) im Bronchoskop mit dem Innenlumen (I) verbunden sowohl zur Probenentnahme von Atemluft zur Analyse als auch zur Bestimmung der Drücke innerhalb des starren Bronchokops eine Verbindung des Bronchoskopinnenlumens mit Messgeräten erstellt werden kann. Rigid bronchoscope characterized in that at a distance of approximately 10 cm from the working opening (A) a connection of the bronchoscope inner lumen to measuring instruments can be established via an internal tube (R) with a small cross-section or via an external tube with a small cross-section through a bore (B) in the bronchoscope connected to the inner lumen (I) both for taking samples of respiratory air for analysis and for determining the pressures within the rigid bronchoscope.
DE29915805U 1999-05-17 1999-05-17 Rigid bronchoscope Expired - Lifetime DE29915805U1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE29915805U DE29915805U1 (en) 1999-05-17 1999-05-17 Rigid bronchoscope

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE29915805U DE29915805U1 (en) 1999-05-17 1999-05-17 Rigid bronchoscope

Publications (1)

Publication Number Publication Date
DE29915805U1 true DE29915805U1 (en) 1999-11-18

Family

ID=8078639

Family Applications (1)

Application Number Title Priority Date Filing Date
DE29915805U Expired - Lifetime DE29915805U1 (en) 1999-05-17 1999-05-17 Rigid bronchoscope

Country Status (1)

Country Link
DE (1) DE29915805U1 (en)

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Legal Events

Date Code Title Description
R086 Non-binding declaration of licensing interest
R207 Utility model specification

Effective date: 19991223

R156 Lapse of ip right after 3 years

Effective date: 20021203