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WO1998011817A1 - Endoscope avec dispositif de chauffage - Google Patents

Endoscope avec dispositif de chauffage Download PDF

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Publication number
WO1998011817A1
WO1998011817A1 PCT/DE1997/001766 DE9701766W WO9811817A1 WO 1998011817 A1 WO1998011817 A1 WO 1998011817A1 DE 9701766 W DE9701766 W DE 9701766W WO 9811817 A1 WO9811817 A1 WO 9811817A1
Authority
WO
WIPO (PCT)
Prior art keywords
optics
endoscope according
endoscope
glass fiber
fiber bundle
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.)
Ceased
Application number
PCT/DE1997/001766
Other languages
German (de)
English (en)
Inventor
Gerhard Fritz Buess
Ernst Flemming
Wolfgang Jürgen KUNERT
Marc Oliver Schurr
Edward Naujoks
Johannes Tschepe
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.)
MGB Endoskopische Geraete GmbH Berlin
Original Assignee
MGB Endoskopische Geraete GmbH Berlin
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 MGB Endoskopische Geraete GmbH Berlin filed Critical MGB Endoskopische Geraete GmbH Berlin
Priority to EP97918886A priority Critical patent/EP0926978A1/fr
Publication of WO1998011817A1 publication Critical patent/WO1998011817A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • A61B1/12—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 with cooling or rinsing arrangements
    • A61B1/127—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 with cooling or rinsing arrangements with means for preventing fogging
    • 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
    • A61B1/00064—Constructional details of the endoscope body
    • A61B1/00071—Insertion part of the endoscope body
    • A61B1/0008—Insertion part of the endoscope body characterised by distal tip features
    • A61B1/00091—Nozzles
    • 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
    • A61B1/12—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 with cooling or rinsing arrangements
    • A61B1/126—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 with cooling or rinsing arrangements provided with means for cleaning in-use
    • 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
    • A61B1/12—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 with cooling or rinsing arrangements
    • A61B1/128—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 with cooling or rinsing arrangements provided with means for regulating temperature

Definitions

  • the present invention relates to an endoscope according to the preamble of claim 1.
  • a rigid endoscope consisting of an optical system used for imaging and a light source, usually implemented using fiber optic technology, is used to illuminate the object under consideration.
  • the invention is therefore based on the object of making available an endoscope with an integrated heating and cleaning possibility which the optics during the entire application ensures a high quality view through the optics.
  • the invention includes the technical teaching that a high quality view through the optics of the endoscope is ensured throughout the application if the heating device is provided in the cladding tube and is dimensioned such that it heats the entire instrument to body temperature when in use. This ensures in a simple manner that there is no temperature gradient between the entire endoscope and its surroundings, which could lead to precipitation which obstructs the view through the optics, in particular on the distal end of the optics.
  • At least one insufflation channel and / or at least one rinsing / drying channel of the distal image entry surface of the optics are also provided in the cladding tube.
  • CO 2 gas can be insufflated into the observation room through the insufflation channel and alternatively an isotonic liquid or a drying gas through the flushing / drying channel.
  • the insufflation channel or the rinsing / drying channel is preferably arranged between the second glass fiber bundle and the optics, so that a lateral distance between the light exit direction at the light outlet of the second glass fiber bundle with respect to the viewing direction at the distal end of the optics is thereby achieved in a simple manner , the one alone ensures parallax required for the desired shadow effect.
  • a means for beam shaping is preferably attached to the respective distal ends of the insufflation channel and / or the winding channel, so that the distal end of the endoscope and in particular the image exit surface can be cleaned with the aid of the gas flow and / or the liquid flow.
  • Use of the endoscope e.g. for surgical interventions with energetic therapy devices, e.g. High-frequency surgery or laser surgery, in which the distal end of the endoscope, in particular the image entry area of the optics, is contaminated without any disruptive interruptions for cleaning the image entry area of the optics.
  • the optical environment is 90 to 100% saturated CO 2 gas at body temperature, so that the distal image area of the optics, according to the dew point curve, steams up more or less depending on its current temperature.
  • the heating insufflation gas, the rinsing liquid and / or the jacket tube, including at least one of the glass fiber bundles is brought to body temperature and thus prevents the distal image-emitting surface of the optics from fogging up.
  • the temperature of the optics and / or the tempered gas stream directed onto the image entry area is reduced by fogging of the distal image entry area of the optics.
  • a control device for the heating device is provided inside the jacket tube, which deactivates the heater or reduces its effect if the temperature of the jacket tube exceeds the body temperature or a predetermined temperature value. This ensures in a simple manner that, on the one hand, the endoscope is not overheated and may damage the surrounding tissue, on the other hand, the temperature of the endoscope cannot fall below a temperature in which it precipitates, especially on the ⁇ stalen The end of the optics would come.
  • the fixed temperature value is preferably 41 ° C., since a low pressure, particularly on the distal end of the optics, is avoided particularly well.
  • the input of the control device is connected to an output of a temperature sensor, which is also preferably a variable resistor.
  • the resistance of the temperature sensor is continuously detected by the control device.
  • the control device switches the heating device on or off or increases or throttles its output.
  • the temperature control is preferably designed in such a way that a preselected temperature, preferably 41 ° C., is not exceeded at the endoscope tip, that is to say in the area of the image exit surface of the optics.
  • a preselected temperature preferably 41 ° C.
  • the winding and drying anal are formed by two separate lumens. This results in a particularly simple implementation of the winding liquid flow and the drying gas flow.
  • the means for beam shaping on the insufflation channels are preferably designed in such a way that imperfections are kept away from the image exit surface of the optics. This simplifies the construction of the endoscope favorably, since in particular a rinsing / drying channel can be omitted.
  • an additional aspiration channel for removing flue gas from the treated body cavity is provided.
  • the invention further includes the technical teaching that an increase in the plasticity of the image reproduction in three-dimensional objects can be achieved if the light exit direction at the light exit of the second glass fiber bundle m in relation to the viewing direction at the distal end of the optics, ie along the image axis of the optics, is offset laterally by an amount such that a parallax which has a value other than zero results for points on a three-dimensional object under consideration with regard to the light exit of the second glass fiber bundle and the distal end of the optics.
  • the shadow that the three-dimensional object under consideration casts on the image background as a result of the light emerging from the second glass fiber bundle and the projection of the object under consideration on the image background from the distal end of the optics do not coincide.
  • the through the The operator, who looks at the image, thus perceives the shadow of the three-dimensional object under consideration on the image background, as a result of which the plasticity of the image reproduction is increased in a simple manner.
  • This shadow formation considerably facilitates the physician's spatial orientation of the endoscoped body cavity.
  • Another advantage of the endoscope according to the invention lies in the fact that the light from the two glass fiber bunoes overlaps in the space under consideration.
  • the light output of the first and second Glasmaschineoundels entste h also t a non-zero parallax aargru ⁇ which is obtained a non-uniform light distribution in the observed space, which in turn uno ernoht the topography contrast of the viewed object to the image background, and this in an advantageous manner for thus let the surgeon appear more plastic.
  • the space under consideration is illuminated more diffusely or more evenly.
  • the light exit of the second bundle of glass fibers can be arranged at a corresponding distance perpendicular to the longitudinal axis of the endoscope next to the distal end of the optics.
  • the light exit of the second glass fiber bundle is therefore preferably provided set back a distance (d) from the distal end of the optics.
  • the distance (d) is preferably about 5 to 50 mm.
  • the glass fibers of the first and / or the second glass fiber bundle are arranged coaxially around the optics over an angular range. In this way, in particular when the second glass fiber bundle is set back, shading of a considerable part of the observation space by the distal end of the optics or the cladding tube is avoided, and thus a particularly favorable illumination of the observation space is achieved.
  • the first and / or second glass fiber bundle preferably have a crescent-shaped cross section, since this results in a particularly homogeneous distribution of the license emerging from the respective glass fiber bundle.
  • the light exit direction of the second glass fiber bundle and / or the viewing direction of the optics is oriented inclined to the image axis of the optics or to the longitudinal axis of the cladding tube.
  • the inclination of the light exit direction of the second glass fiber bundle to the image axis of the optics has the effect that the light beams emerging from the second glass fiber bundle essentially completely illuminate the field of view captured by the optics, whereby a corresponding shadow formation over the field of vision captured by the optics is ensured .
  • the inclination of the viewing direction of the optics, ie the optical image axis of the optics, to the longitudinal axis of the endoscope causes an inclination of the entire field of view captured by the optics.
  • the correspondingly adjusted light beams emerging from the second glass fiber bundle can illuminate the entire field of view captured by the optics without a substantial part of the field of vision from which see the light exit of the second Glasmaschineoundei un ⁇ ⁇ em the distal end of the endoscope extending part of the endoscope is shadowed.
  • the light exit direction of the second glass fiber bundle preferably encloses an angle ⁇ greater than zero with the viewing direction of the optics, so that the light beams emerging from the second glass fiber bundle illuminate the field of view detected by the opt ⁇ .
  • the second glass fiber bundle is integrated in the tubular tube, which results in a simple endoscope that is not very susceptible to damage to the lighting devices.
  • the glass fibers of the second glass fiber bundle have a planar ground end surface that is oriented perpendicular to their longitudinal direction. But you can also in one
  • Angle ⁇ to be ground to such an end face inclined.
  • the angle of inclination of the light exit Direction to the longitudinal axis of the Hull tube or its angle ⁇ to the image axis of the optics can be set in a simple manner without the glass fibers themselves having to be arranged at a corresponding angle to the longitudinal axis of the Hullronr or to the image axis of the optics.
  • the light exit of the second, in particular planarly ground, glass fiber bundle is arranged so as to be slowly displaceable with respect to the hollow tube.
  • the distance between the light exit of the second glass fiber bundle and the distal end of the optics can be varied in a simple manner, as a result of which the parallax of the points in the viewing space also changes with respect to these two reference points, which in turn causes the shadow cast in the viewing space that can be seen by the viewer objects can be set.
  • the proximal ends of the first and the second glass fiber bundle are combined in an optical fiber connection.
  • the number of individual glass fibers of the first and second glass fiber bundles is preferably adapted to the amount of light to be transmitted.
  • FIG. 1 shows a side view of a preferred exemplary embodiment of the invention
  • FIG. 2 shows a plan view of the distal end of the endoscope
  • Figure 3 shows a section through the distal end of the endoscope according to the invention.
  • FIG. 1 shows an elongated, rigid Enoos ⁇ op with an optic 1 integrated in a hollow tube 19, the first glass fiber bundle 2 and the second glass fiber bundle 3.
  • the optic 1 comprises an objective 1.1 that is attached to the distal end 1.2 of the endoscope, ie . H. is attached to the end of the endoscope facing the object to be viewed, and an eyepiece 1.3, which is located at the proximal end 1.4 of the zndoscope, i.e. at the end of the endos . ⁇ Ds facing the surgeon.
  • a heater 18 is provided in the endoscope within the sheath tube 19, which maintains the entire instrument at a certain predetermined temperature.
  • the heater 18 is connected to a control device 20 which regulates the heating activity of the heater 18.
  • the control device 20 deactivates the heating device 18 or reduces its effect if the temperature of the casing tube 19 exceeds a predetermined temperature value of 1 ° C.
  • a temperature sensor 21 is arranged in the distal end 1.2 of the endoscope, which is connected to the input of the control device 20.
  • the temperature sensor 21 is a resistor that varies with the respective temperature.
  • the resistance of the temperature sensor 21 is continuously detected by the control device 20. Depending on the resistance of the temperature sensor 21 detected by the temperature control 20 the control device 20 switches the heater 18 on or off or increases or throttles its output.
  • the temperature control is designed so that a temperature of 41 ° C is not exceeded at the ⁇ er endoscope tip 1.2.
  • other known temperature sensor designs can also be used and that further limit temperatures can also be predetermined or can be adjustable.
  • the regulating device not only regulates the temperature of the endoscope, but at the same time provides the energy for the heater 18. It goes without saying that, in other embodiments of the invention, a separate energy source for the heater 18 can also be provided.
  • the objective 1.1 is arranged at the distal end 1.2 of the endoscope in such a way that the optical image axis 4 of the objective 1.1 - and thus the optics 1 - is inclined at an angle of approximately 30 ° to the longitudinal axis 1.5 of the endoscope.
  • This has a course component perpendicular to the longitudinal axis 1.5, which points in the direction of the side of the endoscope on which the second glass fiber bundle 3 is arranged.
  • the part of the optical image axis 4 which extends from the lens 1.1 in the operator's line of sight is thus inclined to the longitudinal axis 1.5 of the endoscope by the aforementioned angle in the direction of the side of the endoscope on which the second glass fiber bundle 3 is arranged.
  • the light exit 2.2 at the distal end of the first glass fiber bundle 2 is likewise arranged at the distal end 1.2 of the endoscope, the first glass fiber bundle 2 being oriented such that its light exit axis 2.1 is parallel to the image axis 4 of the lens 1.1.
  • the second glass fiber bundle 3 is arranged on the endoscope in the longitudinal direction of the endoscope set back from its distal end 1.2. In the longitudinal direction of the endoscope, the distance (d) of the light exit 3.2 at the distal end of the glass fiber bundle 3 from the distal end 1.2 of the endoscope in the example shown corresponds approximately to three times the diameter of the endoscope at its distal end 1.2.
  • the distance (d) is between 5 and 50 mm.
  • the light exit axis 3.1 of the second glass fiber bundle 3 is inclined at an angle 5 (ie the angle ⁇ ) to the image axis 4 of the objective 1.1, which is approximately 15 ° in the exemplary embodiment shown. It goes without saying that the angle 5 - according to the present requirements - can also be selected differently.
  • the glass fibers of the second glass fiber bundle 3 are bevelled at the light exit 3.2.
  • the end face of the glass fibers at the light exit 3.2 is inclined at an angle 12 (ie the angle ⁇ ) from — in the present exemplary embodiment — approximately 13 ° to the normal plane 3.4 on the longitudinal axis 3.3 of the second glass fiber bundle 3, the end face facing the endoscope .
  • the light exit axis 3.1 of the second glass fiber bundle 3 points away from the endoscope in the light exit direction.
  • the glass fibers are ground planar accordingly.
  • the angles 5 and 12 ie and ß) are directly related.
  • the second glass fiber bundle 3 is arranged displaceably on the endoscope in the longitudinal direction of the endoscope. In this way, the distance between the light exit 3.2 of the second glass fiber bundle 3 and the distal end 1.2 of the endoscope and thus the distal end of the objective 1.1 can be varied.
  • the shadow effect is set with high contrast by a sensible choice of this distance.
  • the glass fibers of the second glass fiber bundle 3 cannot be ground at an angle 12, but can be formed with an end surface perpendicular to their longitudinal axis.
  • the shadow effect can then also be adjusted by the axial distance of the distal end 3.2 of the second glass fiber bundle 3 from the image axis 4.
  • the light for the fiber optic bundles 2 and 3 is coupled separately into the respective fiber optic cable connections 6 and 7.
  • the light from the two glass fiber bundles 2 and 3 overlaps in the room under consideration.
  • An object 8 brought into the viewing space casts a shadow 9 on the image background 10 due to the light emerging from the distal end 3.2 of the second glass fiber bundle 3 due to the distance between the lens 1.1 arranged at the distal end 1.2 and the light exit 3.2 of the second glass fiber bundle 3 the shadow 9 and the projection of the object 8 onto the image background 10 do not overlap from the distal end surface of the lens 1.1.
  • the surgeon looking through the eyepiece 1.3 consequently perceives the shadow of the object 8 on the image background 10.
  • the distance between the light exits 2.2 and 3.2 of the two glass fiber bundles 2 and 3 and their light exit directions 2.1 and 3.1, which are inclined relative to one another, have the effect that the space under consideration is advantageously illuminated more diffusely or more evenly and the topography contrast on the image background 10 also increases the object 8 under consideration is increased, as a result of which the operator is made considerably easier to work due to the increased plasticity of the bilo display.
  • the inclination of the part of the optical lens 4 extending from the lens 1.1 in the direction of the surgeon's view to the longitudinal axis 1.5 of the endoscope in the direction of the second glass fiber bundle 3 causes the entire field of view 4.1 captured by the lens 1.1 to be inclined to the longitudinal axis of the endoscope.
  • the light cone 3.5 emerging from the second glass fiber bundle 3 and inclined in the same direction as the optical image axis ⁇ to the longitudinal axis 1.5 illuminates the entire field of view 4.1 up to a certain maximum distance of the endoscope from the image background 10, without a substantial part of the field of vision 4.1 being shaded from the part of the endoscope which extends between the light exit 3.2 of the second glass fiber bundle 3 and the distal end 1.2 of the endoscope.
  • FIG. 2 shows a plan view of the distal end 1.2 of an endoscope, which essentially corresponds to the endoscope from FIG. 1.
  • the difference to the endoscope from FIG. 1 is that the end surface at the distal end 3.2 "of the second glass fiber bundle 3" is located on the longitudinal axis 3.3 "of the second glass fiber bundle 3", which is why the longitudinal axis 3.3 "also forms the light exit axis of the second glass fiber bundle 3" .
  • the glass fibers of the first glass fiber bundle 2 are arranged coaxially around the optics 1 over a winding range of approximately 180 ° and the glass fibers of the second glass fiber bundle 3 over a winding range of approximately 120 °.
  • the first and second glass fiber bundles 2 and 3 have a crescent-shaped cross section.
  • insufflation channels 14.1 and 14.2, a winding channel 15 and a drying channel 15.2 formed in a separate lumen are integrated in the endoscope, which are arranged between the second glass fiber bundle 3 and the optics 1.
  • the insufflation channels 14.1 and 14.2 can be used to sulfate, for example, CO 2 gas, while isotonic winding liquid is pumped through the winding channel 15.1 and a drying gas is passed through the drying channel 15.2.
  • the respective distal ends of the insufflation channels 14.1 and 14.2, the winding channel 15.1 and the drying channel 15.2 are by means 16 and 17 completed for beam shaping.
  • the means for beam shaping formed on the insufflation channels 14.1 and 14.2 consist of a cap 16 in the form of a hemispherical shell, which closes off the respective channels 14.1 and 14.2.
  • This cap 16 is provided with an opening 16.1 which directs the insufflation gas flow onto the objective 1.1.
  • the distal end 1.2 of the endoscope and in particular the image exit surface of the objective 1.1 is cleaned with the aid of the gas flow and the coil liquid flow. This prevents, during surgical interventions with energetic therapy devices, for example high-frequency surgery or laser surgery, that the distal end 1.2 of the endoscope, mso special oas lens 1.1, is permanently contaminated and makes further work difficult or very impossible.
  • the optical environment is 90 to 100% saturated CO 2 gas at body temperature, so that the distal image-emitting surface of the lens 1.1, according to the dew point curve, fogs up more or less depending on its current temperature.
  • the heater 18 is integrated into the endoscope in such a way that the entire instrument, including the hollow tube 19, the insufflation gas, the rinsing liquid and the lens 1.1 are kept at body temperature and moisture condensation, ie fogging of the lens 1.1, ie the distal Image entry area of the optics 1 is avoided.
  • FIG. 3 shows a section through the distal end of the endoscope, which is similar in principle to the endoscope from FIG. 3.
  • the course of the cut corresponds to a section along the line III-III from FIG. 2.
  • the embodiment from FIG. 3 differs from the embodiment from FIG. 2 in that the heater in the example shown in FIG. 3 consists of an electric heating coil 18 ', which has the length of the endoscope is embedded in the sleeve tube 19 of the endoscope and likewise the entire endoscope is kept at body temperature as described above.
  • the hemispherical shell-shaped cap 16 'formed on the insufflation channels 14.1' and 14.2 ', which closes off the respective channels 14.1' and 14.2 ', is each provided with an opening 16.1' which the insufflation gas flow directs onto the lens 1.1 in such a way that the flow of the insufflation gas keeps pyrolysis products, smoke and contaminating splashes away from the image-emitting surface at the distal end 1.2 of the optics 1. Consequently, in this exemplary embodiment, the winding channel 15.1 and the drying channel 15.2 or an integrated solution winding / drying channel was dispensed with.
  • the duct 15.2 is designed as an aspiration duct for removing flue gas from the treated body cavity.
  • the embodiment of the invention is not limited to the preferred exemplary embodiments specified above. Rather, a number of variants are conceivable which make use of the solution shown even in the case of fundamentally different types.

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

Abstract

Endoscope constitué d'un tube de gainage (19) comportant un dispositif optique (1) et un dispositif de chauffage (18). Ce dernier, disposé à l'intérieur du tube (19), a des dimensions lui permettant, lors de l'utilisation, de chauffer l'ensemble de l'instrument sensiblement à la température du corps.
PCT/DE1997/001766 1996-09-18 1997-08-12 Endoscope avec dispositif de chauffage Ceased WO1998011817A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP97918886A EP0926978A1 (fr) 1996-09-18 1997-08-12 Endoscope avec dispositif de chauffage

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1996137963 DE19637963A1 (de) 1996-09-18 1996-09-18 System zur Gewährleistung einer klaren endoskopischen Sicht
DE19637963.6 1996-09-18

Publications (1)

Publication Number Publication Date
WO1998011817A1 true WO1998011817A1 (fr) 1998-03-26

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ID=7805946

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE1997/001766 Ceased WO1998011817A1 (fr) 1996-09-18 1997-08-12 Endoscope avec dispositif de chauffage

Country Status (3)

Country Link
EP (1) EP0926978A1 (fr)
DE (1) DE19637963A1 (fr)
WO (1) WO1998011817A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102020133722B3 (de) 2020-12-16 2022-01-05 Schölly Fiberoptic GmbH Endoskopieverfahren, Endoskop und Endoskopie-Vorrichtung

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6234635B1 (en) * 1998-07-30 2001-05-22 Michael R. Seitzinger Method for preventing laparoscope fogging
DE10024728A1 (de) * 2000-05-19 2001-11-22 Ami Gmbh Optikreinigungsvorrichtung für ein Endoskopiegerät
DE202017102316U1 (de) 2016-04-29 2017-05-11 Lisa Laser Products Ohg Fuhrberg & Teichmann Medizinisches Endoskop mit Umgebungstemperatursensor sowie Laservorrichtung mit einem solchen Endoskop

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4076018A (en) 1974-12-06 1978-02-28 Richard Wolf Gmbh Endoscopes
GB2197496A (en) * 1986-11-13 1988-05-18 Keymed Borescopes
US5207213A (en) 1991-02-01 1993-05-04 Circon Corporation Laparoscope having means for removing image impeding material from a distal lens
EP0647425A1 (fr) * 1993-10-08 1995-04-12 United States Surgical Corporation Adaptateur endoscopique pour changer l'angle de visée
US5464008A (en) * 1994-04-14 1995-11-07 Kim; John H. Laparoscope defogging
US5533496A (en) * 1994-02-15 1996-07-09 Very Inventive Physicians, Inc. Endoscopic technique particularly suited for exploratory surgery
US5605532A (en) * 1995-10-20 1997-02-25 Vista Medical Technologies, Inc. Fog-free endoscope
US5647840A (en) * 1994-09-14 1997-07-15 Circon Corporation Endoscope having a distally heated distal lens

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4076018A (en) 1974-12-06 1978-02-28 Richard Wolf Gmbh Endoscopes
GB2197496A (en) * 1986-11-13 1988-05-18 Keymed Borescopes
US5207213A (en) 1991-02-01 1993-05-04 Circon Corporation Laparoscope having means for removing image impeding material from a distal lens
EP0647425A1 (fr) * 1993-10-08 1995-04-12 United States Surgical Corporation Adaptateur endoscopique pour changer l'angle de visée
US5533496A (en) * 1994-02-15 1996-07-09 Very Inventive Physicians, Inc. Endoscopic technique particularly suited for exploratory surgery
US5464008A (en) * 1994-04-14 1995-11-07 Kim; John H. Laparoscope defogging
US5647840A (en) * 1994-09-14 1997-07-15 Circon Corporation Endoscope having a distally heated distal lens
US5605532A (en) * 1995-10-20 1997-02-25 Vista Medical Technologies, Inc. Fog-free endoscope

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102020133722B3 (de) 2020-12-16 2022-01-05 Schölly Fiberoptic GmbH Endoskopieverfahren, Endoskop und Endoskopie-Vorrichtung

Also Published As

Publication number Publication date
EP0926978A1 (fr) 1999-07-07
DE19637963A1 (de) 1998-03-19

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