Classifications

• • G—PHYSICS
  • G02—OPTICS
  • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
  • G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
  • G02B7/18—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors
  • G02B7/1805—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors for prisms
• • 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
• • 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
  • A61B1/00066—Proximal part of endoscope body, e.g. handles
• • 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
  • A61B1/00096—Optical elements
• • 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
  • A61B1/00147—Holding or positioning arrangements
• • 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
  • A61B1/00163—Optical arrangements
  • A61B1/00174—Optical arrangements characterised by the viewing angles
  • A61B1/00183—Optical arrangements characterised by the viewing angles for variable viewing angles
• • 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
  • A61B1/05—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 the image sensor, e.g. camera, being in the distal end portion
• • 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
  • A61B1/05—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 the image sensor, e.g. camera, being in the distal end portion
  • A61B1/051—Details of CCD assembly
• • G—PHYSICS
  • G02—OPTICS
  • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
  • G02B23/00—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
  • G02B23/24—Instruments or systems for viewing the inside of hollow bodies, e.g. fibrescopes
  • G02B23/2476—Non-optical details, e.g. housings, mountings, supports

Definitions

• the invention relates to a prism holder of a surgical instrument, in particular endoscope, more preferably video endoscope, for at least one prism having a surgical instrument. Furthermore, the invention relates to a surgical instrument, in particular endoscope.
• Endoscopes and in particular video endoscopes, in which the light entering an operating field at a distal tip of an endoscope shaft of the endoscope is guided by an optical system to a proximal eyepiece or to one or more image sensors are known in various designs.
• endoscopes with a straight-ahead view a so-called 0 ° direction of viewing
• endoscopes with a lateral direction of view which have, for example, a lateral direction of viewing of 30 °, 45 °, 70 ° or the like deviating from the 0 ° direction of view.
• H here is with the above degrees of polar angle between the central Viewing axis and the longitudinal axis of the endoscope shaft meant.
• endoscopes or video endoscopes with adjustable here Ier Bl ickiques in which the Bl ickwinkel, ie the deviation from the straight-ahead view, is adjustable.
• the viewing direction ie the azimuth angle
• the viewing direction can also be adjusted around the longitudinal axis of the endoscope shaft by rotating the endoscope as a whole about the longitudinal axis of the endoscope shaft.
• EP 2 369 395 A1 shows an optical system for a video endoscope in which a change in the angle of view occurs in that a first prism of a prism group with three prisms arranged distally in the endoscope shaft is rotated or swiveled around a rotation axis which is perpendicular or vertical . Is transverse to the longitudinal axis of the endoscope shaft.
• This first prism is also called a pivot prism.
• the other two prisms, which define the optical beam path together with the first prism, are glued together and are not co-rotated.
• the prisms are ground from glass blocks.
• the width of the respective glass block depends on the size of the beam path.
• the swivel prism is received in a swing prism holder and positioned by three abutment surfaces.
• the swing prism holder itself is rotatably mounted in a holder. In the design and production of corresponding prism groups or prism sets, the orientation of the prism, in particular its axis of rotation, is very important.
• DE 1 0 2014 202 669 A1 discloses a prism holder arrangement for an endoscope with a variable viewing direction.
• the image sensor or image sensor is not vertical, but is arranged horizontally to the Endoscopschaftachse.
• the image sensor is glued onto a deflection prism, wherein the light entry surface of the prism is arranged perpendicular and the light exit surface of the prism parallel to the endoscope axis.
• the deflecting prism is mounted in a prism holder using adhesive.
• the object of the invention is to improve the positioning and alignment of a prism of an endoscope in a simple manner.
• a prism holder of a surgical instrument in particular an endoscope, more preferably a video endoscope, for at least one prism having ch irurgisches instrument with a sleeve for receiving a prism, wherein at least one prism pressure body, which arranged with a pressure surface of a in the sleeve or prism arranged to be brought into contact or brought, is provided, wherein the sleeve each having an opening for the prism or the prism and the prism and the at least one Prismenand Weg notion is arranged or can be arranged in the respective opening.
• the invention is based on the idea that a prism pressure body punctually, d .h. With a small contact surface with the pressing surface is brought into contact, so that is pressed by means of the Prismandschreib stressess against a pressing surface of the prism holder for the prism, wherein due to the punctiform contact surface between the prism pressure body and the prism, the prism is freely aligned.
• a plurality of prism pressure bodies are provided, so that in each case a plurality of pressure surfaces of the prism can be brought into contact with at least one respective prism pressure body.
• a prism has two pressure surfaces arranged perpendicular to one another
• one prism pressure body is brought into contact with one pressure surface in each case so that the prism, due to the vertically aligned forces, opposes vertically aligned contact surfaces or alignment surfaces the sleeve is pressed.
• the alignment surfaces are each arranged perpendicular to each other.
• the prism pressure body has a rounded or curved contact surface facing the pressure surface of the prism. This makes it possible that a force is exerted on the prism by means of a punctiform contact between the prism pressure body and the pressing surface.
• the prism pressure body is designed as a ball, in particular as a metal ball or glass ball or ceramic ball.
• the respective opening for the prism pressure body is formed as a bore in the sleeve. It is provided in particular that the opening or bore is arranged opposite an alignment surface of the prism holder for the prism in the sleeve.
• a prism when a prism is arranged in the sleeve of the prism contact body, it is fastened in the opening for the prism pressure body, in particular adhesively bonded, is or is. It is further provided according to the invention that between an alignment surface against which the prism is pressed, no adhesive between the alignment surface and the alignment surface facing side of the prism is present.
• the opening or bore for the respective prism pressure prism body in diameter is slightly larger than the diameter of the Prismenandschreib stresses or designed as Prismenandschreib redesign ball for the prism.
• an embodiment of the prism holder is characterized in that in the arrangement of one or the prism in the sleeve of the prism pressure body connected to the prism pressure body facing the pressure surface of the prism, in particular glued, is or is.
• the prism or the prism or the balls are glued in kraftbeaufschlagten state in the arrangement of the prism in the sleeve, wherein the prism or the prism or push rod act as an adhesive gap bridging.
• the prism pressure body or ball-fixing adhesive gap between the prism pressure body and the opening or bore is formed circumferentially around the ball, in particular perpendicular to the bonding gap between the prism and the prism holder.
• the prism holder two prism pressure bodies are provided for each one pressing surface of the prism, whereby a simple, precise and cost-effective positioning of the prism is achieved in the sleeve of the prism holder.
• the prism is preferably in the form of a deflection prism, in particular a 90 ° prism.
• the prism has a parallelepiped-shaped section, each having two mutually perpendicularly arranged pressing surfaces for one prismatic contact body.
• a prism which has a light entry surface and a light exit surface to be arranged in the sleeve, the light entry surface of the prism being oriented perpendicular to the longitudinal axis of the sleeve and the light exit surface of the prism being aligned parallel to the longitudinal axis of the sleeve.
• an image sensor is arranged in the sleeve, wherein the image sensor is arranged parallel to the light exit surface of the prism.
• the object is further achieved by a surgical instrument, in particular endoscope, with a prism holder as described above. To avoid repetition, express reference is made to the above statements.
• the surgical instrument has a shaft which can be introduced into a body cavity of a living being, in particular endoscope shaft, the prism holder being arranged in the shaft, in particular the endoscope shaft.
• the surgical instrument is designed as a video endoscope.
• Fig. 1 is a schematic perspective view of a
• FIG. 2 schematically shows a front view of a prism holder for an endoscope
• Fig. 3A schematically shows a longitudinal section through the prism holder according to the in Fig. 2 shown section line A-A;
• Fig. 3B schematically shows a longitudinal section through the prism holder according to the embodiment shown in FIG. 2 Thomasl shown in B-B;
• Fig. 4A schematically shows a cross section through the prism holder
• Fig. 4B schematically shows a perspective view of the
• Fig. 1 shows a schematic perspective view of a Endoscope 1 according to the invention with a proximal handle 2 and a rigid endoscope shaft 3.
• a viewing window 5 is arranged, behind which a distal portion 6 of the endoscope shaft is arranged, which has a prism unit, not shown, and an image sensor unit, not shown .
• the endoscope 1 can be designed as a video endoscope.
• the viewing window 5 at the distal tip 4 is curved and asymmetrical.
• the viewing window 5 is formed to support a variable lateral Bl ickwinkel.
• a change in the viewing direction ie a change in the azimuthal angle about the longitudinal axis of the endoscope shaft 3, is effected by a rotation of the handle 2 about the central axis of rotation or longitudinal axis of the endoscope shaft 3.
• the cladding tube of the endoscope shaft 3 is connected to the handle.
• the unillustrated prism unit at the distal tip 4 also rotates with the rotation of the handle 2.
• the handle 2 has a rotary element 7 designed as the first operating element and designed as a slide 8 second operating element.
• the rotary knob 7 is held on a rotation of the handle 2. This causes the image sensor inside the endoscope shaft 3 not to follow the movement.
• the slide 8 In order to change the viewing angle, ie the deviation of the viewing direction from the straight-ahead view, the slide 8 is moved. Pushing the slider 8 distally leads, for example, to an increase in the angle of view, to retrieve the slide. Bers 8 to the proximal causes in this case, a reduction in the angle of view to the straight ahead.
• the operation of the slider 8 is accompanied by a rotation of the image sensor in order to maintain the horizon position of the displayed image even with a rotation of the prism unit against each other.
• FIG. 2 schematically shows a front view of a prism holder 10 for an endoscope.
• the prism holder 1 0 has a sleeve 1 2, which is arranged in an endoscope shaft 3 of an endoscope 1 or is on.
• the sleeve 1 2 has inside a cavity for receiving a prism 14.
• the sleeve has 1 2 inside several stop surfaces 1 6, 1 7.1, 1 7.2 for the prism 14, so that the one side surface of the prism 14 is pressed against the stop surface 16 and at the same time the top of the prism 14 against the stops 1 7.1 , 1 7.2 of the sleeve 1 2 is pressed.
• the stops 1 7.1, 1 7.2 are arranged in a plane or alignment plane, which is formed perpendicular to the plane or alignment plane with the stop 1 6.
• a Andschreibkugel 1 8 is provided and received in the sleeve, which is in contact with the underside of the prism 14 on the inquirel lying side below the prism 14.
• the Andschreibkugel 1 8 contacted the bottom and presses the prism 14 against the stops 1 7.1, 1 7.2.
• a further Andschreibkugel 20 is also provided so that by means of the Andschreibkugel 20, which presses on the stop 1 6 opposite side against a corresponding pressing surface of the prism 14, the prism 14 laterally against the stop 1 6 is pressed.
• FIG. 3A is a longitudinal section through the sleeve 1 2 of the prism shark ters 1 0 according to the in Fig. 2 illustrated Thomasl inia AA.
• FIG. 3 shows a section through the prism holder 10 according to FIG. 2 drawn section line BB.
• the sleeve 1 2 has a recess 22 on the underside, so that easier access to the underside to a bore 28 for the pressure ball 1 8 is thereby possible.
• a Andschreibkugel 1 8 is received in the bore 28 in the sleeve 12.
• the prism 14 is pressed from the bottom against the upper side stops 1 7.1, 1 7.2, which is achieved by the Andschreibkugel 1 8, that a point force is exerted on the prism 14.
• adhesive is applied through the bore 28 on the underside of the prism 14 and the Andschreibkugel 1 8 in one embodiment, wherein subsequently the Andschreibkugel 1 8 is introduced.
• the Andschreibkugel 1 8 is acted upon by a force, so that the upper side of the prism 14 is pressed against the stops 1 7.1, 1 7.2. Subsequently, the Andschreibkugel 1 8 is glued to the sleeve 12 and the prism 14.
• the sleeve 1 2 for receiving the Andschreibkugel 20 has a bore 30 for the Andschreibkugel 20, so that when the prism 14 in the sleeve 1 2 the lateral pressing surface of the prism 14 is brought into contact with the Andschreibkugel 20, and by means of the Andschreibkugel 20, the prism 14 is pressed against the stop 1 6.
• the pressure ball 20 by introducing an adhesive over the punctiform contact surface with the prism 14 and the sleeve 1 2 glued in the bore 30.
• the prism 14 is designed as a deflection prism having a cuboid-shaped section, wherein the light entry side 34 is arranged in a vertical plane to the longitudinal axis of the endoscope shaft 3.
• the cuboid portion of the prism 14 has corresponding pressing surfaces, which are the pressure balls 1 8, 20 respectively facing.
• the deflection prism 14 also has a light exit side 36, wherein the light exit side 36 is aligned in a plane parallel to the longitudinal axis of the endoscope 1.
• An image sensor 38 is arranged on the light exit side 36 of the prism 14 so that the light beams diverted by the deflection prism 14 are detected by means of the image sensor 38.
• the image sensor 38 is adhered to the light exit side 36.
• Fig. 4A is a cross section through the sleeve 1 2 in the region of the pressure balls 1 8, 20 shown schematically.
• Fig. 4B schematically shows a perspective view with the cross-sectional representation in the area of the pressure balls 18, 20.
• the Andschreibkugeln are 1 8, 20 in contact with their facing pressure surfaces of the prism 14, wherein for positioning and fixing of the prism 14 in the sleeve 1 2, the Andschreibkugeln 1 8, 20 each with the facing Andschreib lighting Prism 14, preferably selectively, glued.
• adhesive is also introduced into the holes 28, 30, so that after curing of the adhesive, the Andschreibkugeln 1 8, 20 are fixed in the holes 28, 30.
• the pressure balls 1 8, 20 are made in an embodiment of glass or ceramic.

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

Priority Applications (4)

Applications Claiming Priority (2)

Related Child Applications (1)

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ID=63683148

Family Applications (1)

Country Status (6)

Cited By (1)

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Citations (5)

Family Cites Families (13)

• 2017
  • 2017-09-26 DE DE102017122279.0A patent/DE102017122279A1/de active Pending
• 2018
  • 2018-09-12 JP JP2020517479A patent/JP2020534934A/ja not_active Ceased
  • 2018-09-12 CN CN201880062004.9A patent/CN111149036A/zh active Pending
  • 2018-09-12 EP EP18773960.2A patent/EP3688506A1/de not_active Withdrawn
  • 2018-09-12 WO PCT/EP2018/074623 patent/WO2019063293A1/de not_active Ceased
• 2020
  • 2020-03-26 US US16/830,441 patent/US11675159B2/en active Active

Patent Citations (5)

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