EP0489774A1 - Endoscope a camera de television - Google Patents

Endoscope a camera de television

Info

Publication number
EP0489774A1
EP0489774A1 EP19900912641 EP90912641A EP0489774A1 EP 0489774 A1 EP0489774 A1 EP 0489774A1 EP 19900912641 EP19900912641 EP 19900912641 EP 90912641 A EP90912641 A EP 90912641A EP 0489774 A1 EP0489774 A1 EP 0489774A1
Authority
EP
European Patent Office
Prior art keywords
image
endoscope according
video camera
endoscope
viewing opening
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Withdrawn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
EP19900912641
Other languages
German (de)
English (en)
Inventor
Klaus Irion
Jürgen RUDISCHHAUSER
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.)
Karl Storz SE and Co KG
Original Assignee
Karl Storz SE and Co KG
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
Priority claimed from DE19893928421 external-priority patent/DE3928421C2/de
Application filed by Karl Storz SE and Co KG filed Critical Karl Storz SE and Co KG
Publication of EP0489774A1 publication Critical patent/EP0489774A1/fr
Withdrawn legal-status Critical Current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
    • A61B1/04—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 combined with photographic or television appliances
    • A61B1/042—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 combined with photographic or television appliances characterised by a proximal camera, e.g. a CCD camera
    • 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
    • A61B1/04—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 combined with photographic or television appliances
    • A61B1/055—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 combined with photographic or television appliances having rod-lens arrangements

Definitions

  • the invention relates to an endoscope with an endoscope objective arranged at the distal end, the image of which guides an image guide unit to the proximal end, at which it can be viewed by means of an eyepiece, and with an illumination device that has a light guide that does Conducts light from a light source to the distal end, and has a lateral connection piece for a light guide cable connecting the endoscope to the light source.
  • Endoscopes of the type mentioned above are generally known and have long been offered as standard by the large manufacturers of endoscopes, such as, for example, Karl Storz GmbH & Co. If, in such endoscopes, the endoscope image is to be displayed on a monitor, a miniature video camera is attached to the eyepiece cup either directly or via an image divider, which records the "eyepiece image" by means of a lens and an image recorder .
  • a video camera is, for example, the "Endopocket” video camera from Karl Storz GmbH & Co.
  • miniature video cameras Due to the objective required to image the "eyepiece image", miniature video cameras still have comparatively large dimensions, which can be up to 10 cm in length and up to 5 cm in width.
  • the length of the endoscope is extended by the video camera and the weight distribution is changed.
  • a changed weight distribution disturbs the balancing of the endoscopic unit inserted in the body and thus changes the handling of the entire unit negatively.
  • the object of the invention is to further develop an endoscope according to the preamble of patent claim 1. to make it possible to display a video image without affecting the usual handling of the endoscope.
  • an element can be introduced into the observation beam path in front of the eyepiece in such a way that the transmission beam of the observation beam is at least partially directed towards an image sensor of a video camera.
  • the video camera is therefore no longer attached to the eyepiece cup or the eyepiece funnel, but in front of the eyepiece.
  • the optical outlay is less, since it is not an eyepiece image, but the real image generated by the image guide unit that must be imaged on the image recorder of the video camera.
  • the volume of the endoscope "after the eyepiece” is not increased, so that the operator can handle the endoscope in the usual way.
  • the "lever arm” is lower since the video camera is mounted closer to the center of gravity of the endoscopic unit.
  • the element introduced into the observation beam path in front of the eyepiece is a deflection element which at least partially deflects the observation beam onto a second viewing opening, to which the video camera can be attached.
  • This design of the endoscope according to the invention has the particular advantage that when used a partially transparent mirror as a deflecting element (claim 3) is possible to simultaneously display a video image and to view the endoscopic image in the usual way through the eyepiece.
  • the other operating elements for the examiner such as shut-off cocks of the shaft, surgical instruments, etc., are at the usual distance from the eyepiece funnel or eyepiece cup, since the video camera is attached to the second viewing opening in front of the eyepiece, so that during an Do not carry out the operation "blindly" to change the movements.
  • At least one further deflection element is provided outside the observation beam path in such a way that a correct image is produced at the second viewing opening. If necessary, however, the further deflection element can also be dispensed with and the "image erection" can be carried out, for example, using electronic means, so that a correct image is displayed on a monitor.
  • the deflection element introduced into the beam path according to the invention can of course be provided in the space between the last optical surface of the image guide unit and the eyepiece cup.
  • the deflecting element which deflects the beam path onto the second viewing opening, into a rod lens is integrated.
  • Such a design not only has the advantage that the deflecting element can in any case be accommodated within the normal length of an endoscope, but also the advantage that it is readily possible to arrange the image recorder of the video camera in the proximal image plane of the last relay lens system without additional intermediate imaging.
  • an intermediate imaging system for the second viewing opening, which intermediate images the image generated by the image guide unit.
  • Such an intermediate imaging system can be provided both when the deflection element according to the image guide unit (claim 6) and when the deflection system is arranged according to claim 5.
  • the deflecting element (s) and possibly the intermediate imaging system are connected to the video camera and can be removed together with the latter from the endoscope. This ensures that whenever no video image is to be displayed, the size and weight of the endoscope do not exceed the sizes of conventional endoscopes, and the brightness of the visually observed image is not reduced by the divider mirror.
  • the deflection element that can be introduced into the beam path is not part of the video camera
  • the second viewing opening provided according to the invention, to which the video camera can be attached, there are various possible arrangements: E.g. can be integrated according to claim 10, the second viewing opening in the side connection piece for the illumination light.
  • the light entry surface for the light from the illuminating light source is designed in a ring shape and surrounds the second viewing opening.
  • This arrangement has the advantage that the design of the endoscope is not changed significantly, since even with conventional endoscopes an optical fiber cable is attached to the connecting piece, so that the operator is used to having an element on the side of this side "protrudes" from the endoscope.
  • the light exit surface of the optical fiber cable surrounds the image recorder of the video camera that can be inserted into the connecting piece, since it is then possible to design the connecting cable for the video camera and the optical fiber cable as a unit.
  • the second viewing opening is also possible for the second viewing opening to be arranged next to the connecting piece for the illuminating light (claim 16).
  • This training has the advantage that existing fiber optic cables and fiber optic connectors can be used if necessary. It is preferred if the second viewing opening and the connecting piece for the illumination light are combined to form a structural unit (claim 17).
  • the second viewing opening can also be arranged opposite the lateral connection piece for the illuminating light (claim 12).
  • Such a design may improve the weight distribution of the endoscope according to the invention compared to conventional endoscopes. - 1 -
  • the second viewing opening can be arranged in a handle, into which the video camera can be inserted.
  • a handle is provided for handling the endoscope.
  • This handle which is not used in known endoscopes, is given the additional function according to the invention that, in addition to handling the endoscope, it is also used to record the video camera.
  • the optical axis of the video camera forms an angle unequal to 90 ° with the optical axis of the image guide unit, since the handle can then be designed ergonomically.
  • a further possibility of arranging the second viewing opening is characterized in claim 15, according to which the second viewing opening is arranged parallel to the eyepiece viewing.
  • This design has the advantage that the "lateral protrusion" of the video camera is as minimal as possible, as a rule. the length dimensions are larger than the width dimensions.
  • This training has the advantage that usually completely on a lens or the like. can be dispensed with for the video camera.
  • the image recorder of the video camera can be arranged on a guide, which can be designed, for example, like a revolver changer, by means of which it can be moved laterally out of the beam path, so that a simple switchover between direct observation via the eyepiece and video display is possible (claim 19).
  • FIG. 1 shows a first embodiment of the invention with a video camera attached to the side
  • FIG. 3 shows a third exemplary embodiment of the invention with a video camera arranged parallel to the optical axis
  • FIG. 4 shows a fourth exemplary embodiment of the invention, in which the video camera and the deflecting mirror are combined to form a structural unit
  • FIG. 6d enlarges the design of the deflecting element, in which the video camera can be pushed into a handle, in two positions, FIGS .
  • the endoscope 10 has an eyepiece 1 for viewing the image of an image guide unit 2 which is only partially shown and which guides the image of an endoscope objective (not shown) to the proximal end. Furthermore, a connecting piece 3 is provided which allows the light from a lighting device (not shown) to be introduced into a light guide 4 which is only shown in part and which guides the light from this light source to the distal end. Typically, the light guide at least partially surrounds the image guide unit. 5 also designates the housing or the wall of the endoscope.
  • the light guide has so-called rod lens systems 2 ', as are generally used in hard or rigid endoscopes.
  • rod lens systems 2 ' are generally used in hard or rigid endoscopes.
  • other light guides such as fiber bundles or the like.
  • 20 denotes the video camera, which has an image pickup 11 and a lens 12.
  • 14 also designates a deflection element, for example a mirror, which deflects at least part of the imaging beam path intensity onto the image sensor 11 of the video camera 20.
  • the deflection element 14 is designed as a partially transparent mirror which is inserted between the rod lens elements 3 and which directs part of the intensity onto the image sensor 11 of the video camera 20, so that simultaneous observation through the eyepiece 1 and the video image is possible on a monitor (not shown) is.
  • the "uprighting" of the inverted image of the video camera 20 can be carried out “electronically” or with an image erecting system, for example a Dove prism, which is inserted between the deflecting element 14 and the objective 12.
  • connection piece for the video camera 20 is integrated in the connection piece 3 for the light guide 4, which concentrically surrounds the image recorder 11 and the lens 12 of the video camera.
  • connection piece 13 for the video camera 20 next to the connecting piece 3 for the light guide 4 angeord ⁇ net.
  • the connection cable 15 for the video camera can be combined with the light guide cable that connects the endoscope 20 to a lighting device (not shown) to form a uniform cable.
  • the two variants of the second embodiment correspond to the first embodiment.
  • the mirror 14 can in turn be designed as a partially transparent mirror, and the image erection can take place electronically or optically.
  • FIG. 3 shows a third exemplary embodiment of the invention, in which the video camera 20 is arranged “parallel” to the optical axis of the endoscope 10.
  • the deflection of part of the intensity of the imaging light bundle again takes place with a partially transmissive mirror 14, to which a full mirror 15 is arranged, so that a correct image is imaged on the image sensor 11 of the video camera 20.
  • the fourth exemplary embodiment shown in FIG. 4 corresponds to the third exemplary embodiment with regard to its optical structure, but the video camera 20 and the deflecting or deflecting mirror 14 are combined to form a structural unit, so that they can be removed as a whole from the observation beam path. In this way, a brighter image is obtained whenever no video observation is desired, since no partially transparent mirror remains in the beam path for visual observation.
  • 5a and 5b show a fifth exemplary embodiment of the invention, in which the video camera 20 can be inserted into a handle 6 provided on the endoscope 10. The video camera is in turn combined with a deflection mirror 14 and a further deflection mirror 15 to form a structural unit.
  • the image pickup 11 of the video camera and the two mirrors are arranged such that, alternatively, the partially transparent mirror 14 or directly the image pickup 11 with the lens 12 connected upstream is in the beam path of the image guide - Unit 2 can be introduced.
  • 6a to 6c show two variants of a sixth exemplary embodiment of the invention, in which the deflecting element is integrated in a rod lens 2 '.
  • 6a and 6b show a (partially perspective) side view and top view of a first variant in which the deflection element 14 is integrated in a rod lens 2.
  • the illustrated 'embodiment of the Jardinaufneh ⁇ mer 11 is a Fra e-trans er-chip. It is particularly advantageous that the comparatively large chip can be accommodated in the thickened middle part of the endoscope without any problems.
  • 6c shows a second variant, with three image recorders 1 111--1111-- vvoorrggeesseehheenn ssiinndd ,, ddiiee jjeewweeiill, s record a color separation of a colored video image.
  • 6d shows a side view and a top view of a possibility of obtaining a right-sided image by using two mirrors 14 and 15 when the deflecting element 14 is arranged in a rod lens 2.
  • the invention has been described above with reference to exemplary embodiments.
  • the most varied of embodiments are possible within the general inventive concept: for example, in a modification of the fifth embodiment, it is possible to dispense entirely with the mirrors and to design the video unit 20 and the corresponding connecting piece 13 on the endoscope in such a way that the Video unit can be inserted directly into the observation beam path, so that alternatively only visual observation or video observation is possible.
  • the divider mirror 14 can also be designed as a full mirror.

Landscapes

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

Abstract

Un endoscope (10) comporte un objectif monté à son extrémité distale. L'image produite par l'objectif est dirigée par une unité conductrice d'image (2), vers l'extrémité proximale, au niveau de laquelle elle peut être observée au moyen d'un oculaire (1). Un dispositif d'éclairage comprend une fibre optique (4) qui conduit la lumière depuis une source lumineuse jusqu'à l'extrémité distale et qui entoure, au moins partiellement, l'unité conductrice d'image (2). L'endoscope comprend une tubulure de raccordement latérale (3) destinée à un câble en fibres optiques (15) qui raccorde l'endoscope à la source lumineuse. Un élément (14) peut être placé dans la trajectoire du faisceau d'observation devant l'oculaire (1), de sorte que le faisceau d'observation (2) soit dirigé, au moins partiellement, sur l'élément capteur (11) d'une caméra vidéo.
EP19900912641 1989-08-28 1990-08-28 Endoscope a camera de television Withdrawn EP0489774A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19893928421 DE3928421C2 (de) 1989-08-28 1989-08-28 Endoskop mit einer Videokamera
DE3928421 1989-08-28

Publications (1)

Publication Number Publication Date
EP0489774A1 true EP0489774A1 (fr) 1992-06-17

Family

ID=6388046

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900912641 Withdrawn EP0489774A1 (fr) 1989-08-28 1990-08-28 Endoscope a camera de television

Country Status (4)

Country Link
EP (1) EP0489774A1 (fr)
JP (1) JPH04507305A (fr)
DE (1) DE3943712C2 (fr)
WO (1) WO1991003201A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5379756A (en) * 1992-09-11 1995-01-10 Welch Allyn, Inc. Replaceable lens assembly for video laparoscope
GB2389914B (en) 2002-06-18 2004-05-26 Keymed Dual capability borescope
DE102011008533B4 (de) 2011-01-13 2018-09-13 Olympus Winter & Ibe Gmbh Ureteroskop mit einer Betrachtungseinrichtung
EP3909498A1 (fr) * 2020-05-11 2021-11-17 Welch Allyn, INC. Systemes et procedes de configuration d'un chemin de lumiere optique

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0022220B1 (fr) * 1979-07-05 1984-03-07 Olympus Optical Co., Ltd. Elément additionnel d'observation multiple pour endoscope
JPS5810032A (ja) * 1981-07-09 1983-01-20 オリンパス光学工業株式会社 内視鏡
US4413278A (en) * 1981-10-05 1983-11-01 Designs For Vision, Inc. Optical coupling apparatus for coupling an arthoscope to a camera
DE3363322D1 (en) * 1982-02-08 1986-06-12 Olympus Optical Co Connecting device for endoscope
JPS5969742A (ja) * 1982-10-15 1984-04-20 Olympus Optical Co Ltd 内視鏡装置用ストロボ制御装置
AU569442B2 (en) * 1983-04-11 1988-01-28 Sumitomo Electric Industries, Ltd. Device for observing pictures
US4854302A (en) * 1987-11-12 1989-08-08 Welch Allyn, Inc. Video equipped endoscope with needle probe

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9103201A1 *

Also Published As

Publication number Publication date
DE3943712C2 (de) 1995-09-21
WO1991003201A1 (fr) 1991-03-21
JPH04507305A (ja) 1992-12-17

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