Classifications

• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
  • A61B17/00—Surgical instruments, devices or methods
  • A61B17/00234—Surgical instruments, devices or methods for minimally invasive surgery
• • 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
  • A61B1/0011—Manufacturing of endoscope parts
• • 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
  • A61B1/00112—Connection or coupling means
• • 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
  • A61B1/00112—Connection or coupling means
  • A61B1/00114—Electrical cables in or with an endoscope
• • 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
  • A61B1/00112—Connection or coupling means
  • A61B1/00121—Connectors, fasteners and adapters, e.g. on the endoscope handle
  • A61B1/00124—Connectors, fasteners and adapters, e.g. on the endoscope handle electrical, e.g. electrical plug-and-socket connection
• • 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
  • A61B1/00112—Connection or coupling means
  • A61B1/00121—Connectors, fasteners and adapters, e.g. on the endoscope handle
  • A61B1/00126—Connectors, fasteners and adapters, e.g. on the endoscope handle optical, e.g. for light supply cables
• • 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
  • A61B1/00112—Connection or coupling means
  • A61B1/00121—Connectors, fasteners and adapters, e.g. on the endoscope handle
  • A61B1/00128—Connectors, fasteners and adapters, e.g. on the endoscope handle mechanical, e.g. for tubes or pipes
• • 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
  • A61B1/00131—Accessories for endoscopes
  • A61B1/00137—End pieces at either end of the endoscope, e.g. caps, seals or forceps plugs
• • 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
  • A61B1/00195—Optical arrangements with eyepieces
• • 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
  • A61B1/00195—Optical arrangements with eyepieces
  • A61B1/00197—Optical arrangements with eyepieces characterised by multiple eyepieces
• • 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
  • A61B1/06—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 illuminating arrangements
  • A61B1/0661—Endoscope light sources
  • A61B1/0684—Endoscope light sources using light emitting diodes [LED]
• • 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 an eyepiece device for a surgical instrument, in particular an endoscope, with an optical assembly, which is accommodated or received in an eyepiece frame in an interior of the surgical instrument, wherein the optical assembly is separated by an eyepiece from an outside space and the eyepiece in a holder is received, which is connectable or connected to the Okularrome charged, wherein in the connected state, the holder in a clamping direction exerts a holding force on the eyepiece window.
• the invention relates to a surgical instrument, in particular an endoscope with an eyepiece.
• Endoscopes for minimally invasive surgery on the human or animal body are well known. Optics at the distal tip of the endoscope shaft create the possibility of having a surgical or examination field inside the body consider .
• a plurality of optical assemblies are arranged in the endoscope, with which light is guided out of a body cavity to a proximal end of the endoscope, on which the endoscope is held and operated by a surgeon.
• an eyepiece funnel with an eyepiece, ie an optical assembly, from which the light emerging at the distal tip of the endoscope emerges again.
• an eyepiece can be used for direct observation of the surgical field with the naked eye.
• a camera head is connected to the eyepiece so that the operating field can be viewed on a monitor or the captured image data can be fed to a subsequent image processing.
• Such an endoscope is apparent, for example, from EP 0 501 088 A1.
• optical components present in an interior of the endoscope for example in its shaft, are separated from one another by an eyepiece window in relation to an outer space which surrounds the endoscope.
• an eyepiece device for a surgical instrument in particular an endoscope
• an optical assembly which is accommodated or received in an eyepiece window frame in an interior of the surgical instrument, wherein the optical assembly is separated by an eyepiece from an outside space and the Eyepiece window in a holder is received, which is connectable or connected to the Okularrome charged, wherein in the connected state, the holder exerts a clamping force on the eyepiece in a clamping direction, wherein the eyepiece is formed by the fact that at least one of the clamping force transmitted elastic element is included.
• the technical teaching according to the invention is based on the following finding: In conventional eyepiece devices of surgical instruments, for example in eyepiece devices of endoscopes, there often remains a gap between the holder and the eyepiece window holder, which serves to compensate tolerances when inserting the eyepiece window. In this area of the surgical instrument, however, there is a risk that accumulate dirt particles that can be removed only with great effort.
• the eyepiece window comes under strong tension when tightening the holder.
• the elastic element acts in this context as damping.
• the eyepiece device is formed by the fact that the elastic element is arranged, viewed in the clamping direction, at least in sections between the holder and the eyepiece window.
• a seal between the eyepiece window and the holder is created so that dirt or dust particles can practically no longer penetrate into the eyepiece.
• the eyepiece device is further developed by the fact that the elastic element is a spring element, wherein the spring element is in particular a plate spring, a spring ring and / or a wave washer.
• the elastic element is a spring element, wherein the spring element is in particular a plate spring, a spring ring and / or a wave washer.
• rubber-elastic materials for example in the form of an O-ring.
• the eyepiece device is formed by the fact that the Eyepiece window frame comprises a stop for the holder, which limits a movement of the holder in the clamping direction.
• the possibility is created during the assembly to record the eyepiece window without play by the elastic element and then tighten the holder until it abuts against the stop.
• a gap between the eyepiece window frame, which comprises the stop, and the holder is advantageously avoided. This improves the hygiene properties of the ocular device or of the surgical instrument in which the ocular device is installed.
• the eyepiece device is further developed in that the stop limits a movement of the holder in the clamping direction such that, in the tightened state of the holder, when the shark sion abuts the stop, viewed in the Klennnncardi considered between the holder and the eyepiece a nip is present, wherein the elastic element is at least partially disposed in the nip.
• the holder comprises an edge which can be connected or connected to the eyepiece window frame and an adjoining collar, wherein the collar surrounds an opening in which the eyepiece window is at least partially accommodated, and wherein the collar bears against it the Okular modifier having a recess extending along its outer circumference recess, wherein the eyepiece window in the region of the recess on a collar facing the upper side has a second clamping region, wherein the elastic element between the first and the second clamping region is arranged.
• the eyepiece is further developed in that the spring element comprises a on the holder, in particular on an underside of the collar of the holder, one-sided battered plate spring, wherein it is provided in particular that the plate spring, starting from a stop area in the direction of its free end from an outside the holder extends in the direction of a center of the holder. Due to the intended orientation or arrangement of the plate spring, the penetration of dirt or dust particles into a region between eyepiece window and holder and from there further in the direction of the optical assembly is largely avoided.
• the collar is formed at least in sections as a spring element.
• a part of the holder, in particular its collar is designed as a spring element, it is advantageously possible to dispense with a component, namely the elastic element itself. This is namely formed by the collar of the bracket itself. This measure simplifies the production of the eyepiece device and also offers cost advantages.
• the holder is a union nut, wherein it is provided in particular that the union nut has an internal thread which meshes in the mounted state with an existing on the eyepiece window frame external thread.
• the holder and / or the Okularrome charged are preferably made of a metal or a plastic.
• the elastic element is likewise made, for example, of a metal, for example of spring steel, or of a plastic. Also suitable, for example, rubber or similar suitable elastic materials.
• the nip is also preferably present between the first and second clamping regions.
• the elastic element is present or arranged in particular in the clamping gap.
• the elastic member is an O-ring or the like.
• the eyepiece window is preferably designed as a plane glass, thus has two plane-parallel Surfaces on. Further preferably, the eyepiece window is circular. The same applies to the Okularrome charged. A side edge of the eyepiece and the Okularrome charged are also preferred form and function complementary constructed.
• the eyepiece window for example, at its outer edge on a recess into which engages the holder.
• This side edge of the eyepiece window is preferably annular.
• the Okularrome charged and the eyepiece are glued together.
• the eyepiece window is glued along its circumference, in particular completely along its circumference, at its outer edge with the Okularrome charged.
• the surgical instrument is also preferably a laparoscope.
• Fig. 1 is a schematic and simplified side view of a surgical instrument
• Fig. 2 is a detailed view of an eyepiece in a schematic and simplified Longitudinal section and
• FIG. 3 is a schematic and simplified detail view of the FIG. 2 known longitudinal section through the eyepiece.
• Fig. 1 shows a schematic and simplified side view of a surgical instrument 2, for example an endoscope. At its distal end, this comprises a tubular shank 4 with an optic which allows observation of an operating or examination area which lies distally in front of the free end of the shaft 4.
• the shaft 4 opens into a housing 6 which has an eyepiece funnel 8 at the proximal end.
• the housing 6 is used to handle the surgical instrument 2.
• the side of the housing 6 is a light source 10, for example, an LED light source. This is connected via a connecting cable 1 2 with a suitable power supply.
• a camera head 14 is arranged with an eyepiece adapter, not shown.
• the camera head 14 detects the light emerging from the eyepiece of the surgical instrument 2 with its own optics and images this on an optical surface sensor, for example a CCD or CMOS chip.
• an optical surface sensor for example a CCD or CMOS chip.
• the camera head 14 is supplied with power.
• Fig. 2 shows in a schematic and simplified longitudinal section a detailed view of an eyepiece device 20, as is provided in the region of the eyepiece funnel 8 at the proximal end of a surgical instrument 2, for example an endoscope.
• the eyepiece device 20 comprises an eyepiece window mount 22, in which an optical assembly 24 is accommodated.
• the optical assembly 24 is, for example, one or more lenses or lens groups, prisms, filters or dg I. , which form an optical system.
• the optical axis A of the optical system is shown in dash-dotted line.
• the eyepiece device 20 is located in an inner space of the surgical instrument 2, for example in one of the housing 6 of the in FIG. 1 illustrated endoscope enclosed interior.
• the optical system recorded by it serves for the imaging of a light beam entering the shaft 6 from an examination region at the distal end onto a planar sensor of the camera head 14.
• the camera head 14 is removable. In this state, an eyepiece window 26 encompassed by the eyepiece device separates the outside space from the interior of the surgical instrument 2.
• the eyepiece window 26 is received in a holder 28.
• a union nut This has an internal thread, which meshes with an existing on the Okular00 charged 22 external thread.
• the holder 28 is connected or connected in this way with the Okular00 charged 22.
• the holder 28 exerts a clamping force on the eyepiece window 26 in a clamping direction K.
• Klennnnraum K is located between the holder 28 and the eyepiece 26, at least one of the clamping force transmitting elastic element 30.
• it is in the elastic element to a plate spring.
• it is also intended to use as an elastic element, a spring washer, a wave washer, an O-ring or the like.
• the eyepiece window frame 22 includes a stop 32, which limits the movement of the holder 28 in the clamping direction K.
• the stop 32 limits the movement of the holder 28 in the clamping direction K such that in the tightened state of the holder 28, as shown in FIG. 2, the holder 28 abuts against the stop 32.
• a clamping gap 34 remains between the eyepiece window 26 and the holder 28.
• the elastic element 30 is arranged at least in sections in the clamping gap 34.
• FIG. 3 shows in a schematic simplified longitudinal sectional view a detail of FIG. 2.
• the holder 28 is preferably configured such that it comprises a rim 36 which can be connected to the eyepiece window mount 22 and an adjoining collar 38.
• the edge 36 is provided on its the Okularrome charged 22 facing inside with an internal thread.
• the collar 36 adjoins the edge 36, which surrounds an opening through which the eyepiece window 26 partially passes.
• the eyepiece window 26 is at least partially accommodated in the opening surrounded by the collar 38.
• the collar 38 has a first clamping region 40 on its underside facing the eyepiece 26.
• the eyepiece window 26 has a recess 42 running along its outer circumference. In this area, the eyepiece window 26 points to its ner the collar 38 top facing a second clamping portion 44.
• the elastic element 30, which is shown in FIG. 3 is not shown for reasons of clarity, is located between the first clamping portion 40 and the second clamping portion 44th
• the holder 28 is dimensioned so that it abuts against the stop 32 of the Okularrome charged 22 and yet a nip 34 remains present.
• a nip 34 remains present.
• the penetration of dirt particles or dust into the interior of the eyepiece window frame 22 is advantageously avoided.
• the elastic member 30, which is, for example, a spring element, is struck on one side on the underside of the collar 38.
• the plate spring provided as an elastic element 30 extends from an outside of the holder 28 in the direction of its center, that is to say in the direction of the optical axis A.
• the eyepiece window frame 22 has a shoulder 46 which extends along the inner surface of the eyepiece window frame 22. space, in particular completely, extends along the circumference. At an eyepiece 26 facing annular surface of the shoulder 46, the eyepiece 26 is glued to the eyepiece window frame 22.
• the collar 38 of the holder 28 itself is formed at least in sections as a spring element and thus acts as an elastic element 30.

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

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Citations (7)

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• 2015
  • 2015-02-05 DE DE102015202002.9A patent/DE102015202002A1/de not_active Ceased
• 2016
  • 2016-01-18 EP EP16700835.8A patent/EP3253272B1/de not_active Not-in-force
  • 2016-01-18 JP JP2017541270A patent/JP6648148B2/ja not_active Expired - Fee Related
  • 2016-01-18 WO PCT/EP2016/050866 patent/WO2016124379A1/de not_active Ceased
• 2017
  • 2017-07-27 US US15/661,030 patent/US10561408B2/en not_active Expired - Fee Related

Patent Citations (7)

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