EP3746831A1 - Okulareinrichtung für ein chirurgisches instrument - Google Patents
Okulareinrichtung für ein chirurgisches instrumentInfo
- Publication number
- EP3746831A1 EP3746831A1 EP19704255.9A EP19704255A EP3746831A1 EP 3746831 A1 EP3746831 A1 EP 3746831A1 EP 19704255 A EP19704255 A EP 19704255A EP 3746831 A1 EP3746831 A1 EP 3746831A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- eyepiece device
- connecting element
- image guide
- sliding element
- sliding
- 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- Withdrawn
Links
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- 230000003287 optical effect Effects 0.000 claims abstract description 35
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- 229920006332 epoxy adhesive Polymers 0.000 claims description 9
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- 239000004020 conductor Substances 0.000 description 23
- 230000005540 biological transmission Effects 0.000 description 10
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- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
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- 229910001369 Brass Inorganic materials 0.000 description 1
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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
- A61B1/00163—Optical arrangements
- A61B1/00195—Optical arrangements with eyepieces
-
- 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
- G02B23/2407—Optical details
- G02B23/2453—Optical details of the proximal end
-
- 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
- A61B1/00165—Optical arrangements with light-conductive means, e.g. fibre optics
- A61B1/00167—Details of optical fibre bundles, e.g. shape or fibre distribution
-
- 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
- A61B1/00186—Optical arrangements with imaging filters
-
- 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
- G02B23/26—Instruments or systems for viewing the inside of hollow bodies, e.g. fibrescopes using light guides
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/006—Filter holders
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/008—Mountings, adjusting means, or light-tight connections, for optical elements with means for compensating for changes in temperature or for controlling the temperature; thermal stabilisation
Definitions
- the invention relates to an eyepiece device mentioned in the preamble of claim 1, as well as surgical instruments, which include the eyepiece.
- endoscopic instruments are usually used, which allow optics to observe the surgical or examination field.
- the instruments usually have an optical system spanning the tubular shaft, in which an objective is arranged in the distal end region of the instrument and an eyepiece device is arranged in the proximal end region of the instrument. Between the objective and the eyepiece device extends an image transmission device, for. B. an image guide fiber bundle.
- Corresponding eyepiece devices are z. B. in DE 10 2015 202 002 A1 and DE 2015 202 137 A1 described.
- the ocular device can be used directly to observe the site of intervention with the naked eye. Alternatively, however, often a camera head is connected to the eyepiece, so that the intervention can be viewed on a monitor and the visual data can be supplied to a further digital processing (cf EP 0 501 088 A1).
- image conductor fiber bundles are preferred in particular to lens systems when in surgical instruments with a thin shaft part an image transmission unit with a particularly small diameter is required.
- optical interference z.
- Moire effects Such moiré effects arise z.
- CCD electronic image pickup element
- optical filters can be used (anti-Moire filter).
- Anti-Moire filters can, for. B. consist of 3 or more glass layers and z. B. in US 6,025,873.
- the connection between the filter and the image conductor fiber bundle can be produced, for example, end face by an inflexible optical adhesive.
- the filter is adhered by means of a flexible adhesive within the instrument.
- the flexible adhesive is used to fill in the uneven gap. Due to the flexible adhesive and the necessary due to the relatively high weight of the filter and the small connecting surface support can be ensured.
- the support is made flexible, since the different thermal expansion properties of the metal, glass and plastic components could otherwise lead to the demolition of the connection between the fiber bundle and filter.
- As flexible adhesives currently z. As silicone adhesives used.
- inflexible epoxy resin adhesives are used within the surgical instruments in the immediate vicinity of this bonding site, z. B. to ensure a sealing bond to the outside of the instrument out.
- the simultaneous use of silicone and epoxy adhesives is associated with a high cost, since both types of adhesives must be applied strictly separated and cured so as not to adversely affect the adhesive strength of the other adhesive. For example, contamination with a wafer-thin layer of silicone adhesive under an epoxy adhesive can cause it to fail to bond firmly to the substrate.
- the epoxy adhesive can also affect the cross-linking of the silicone adhesive, depending on the hardener component used. To react z.
- platinum catalysts that can be used in silicone adhesives sensitive to amine-containing epoxy adhesive hardener. Since even in the curing of epoxy adhesives escaping gases may be sufficient to negatively affect the cross-linking of an adjacent silicone adhesive, the two types of adhesive usually have to work in separate rooms and separate ventilation systems.
- an eyepiece device which has the characterizing features of claim 1, as well as surgical instruments comprising such Okular painen.
- the subclaims relate to advantageous embodiments of the invention.
- the invention relates to an ocular device for a surgical instrument, in particular an endoscope, having an image guide channel part through which an image guide fiber bundle passes, an optical filter element at the proximal end of the image guide fiber bundle and a connecting element which at the proximal end of the Image guide channel part is arranged, characterized in that the optical filter element is arranged in a sliding element and the sliding element is arranged longitudinally displaceable within the connecting element.
- the optical filter element By attaching the optical filter element in a longitudinally displaceable sliding element, the different thermal expansion properties of processed glass, metal and plastic materials can be compensated by axial movements of the sliding element. The risk for a separation of the optical filter element from the image guide fiber bundle by the different expansion of materials used is thereby minimized.
- the use of a flexible adhesive can advantageously be dispensed with, so that in the course of the production process no negative interactions between flexible (epoxy) adhesives and inflexible (silicone) adhesives can occur.
- the relatively heavy optical filter is supported radially, since it is securely received in the sliding element and the sliding element in turn passes precisely within a connecting element.
- the mating connection between the sliding element and the connecting element permits only axial movements of the sliding element.
- Eyepiece devices and surgical instruments comprising such eyepiece devices can be classified into two different types, in particular a lens relay type that uses lenses in an optical image transmission system, and in US Pat a fiber canela type using a fiber bundle for image transfer.
- the eyepiece device according to the invention is an eyelet device of the fiber canela type.
- the image guide fiber bundle when the image guide fiber bundle is combined for image transmission from the point of intervention with a camera head to record the image data, unwanted moiré effects regularly occur.
- the ocular device is the eye or the camera head-side part of the optical system of a surgical instrument, which adjoins the image transmission device proximally.
- the Okular coupled the proximal end of the image transmission device, for. B.
- the image guide fiber bundle include.
- the eyepiece device according to the invention comprises an optical filter element.
- the filter element is preferably designed for the optical suppression of moiré effects, in particular moiré effects which have been produced by the use of the image conductor fiber bundle for image transmission from the intervention site and / or by the combination of image conductor fiber bundles with a camera head.
- the filter element is preferably an anti-moire filter or an optical low-pass filter.
- the filter elements will improve the image quality and / or simplify the evaluation of the transmitted image information. This does not exclude that the use of the filter elements may reduce the sharpness of the image.
- Optical filter elements such as low-pass filters or anti-moire filters
- the filter element has three or more glass layers with different refractive properties.
- Corresponding filter elements, in particular anti-moire or low-pass filters, are known to those skilled in the art.
- the optical filter element is arranged at the proximal end of the image guide fiber bundle.
- the optical filter element will be directly adjacent to the image conductor fiber bundle or separated from the image conductor fiber bundle only by an adhesive layer.
- adhesives suitable for optics can be used.
- these are inflexible adhesives, such as epoxy resin adhesives.
- the adhesive is applied to the front side (the proximal end) of the image conductor fiber bundle. Between the image conductor fiber bundle and the filter element thus creates an inflexible (solid) Connection, so that fiber bundles and filter element are not movable relative to each other.
- the eyepiece device has an image guide channel part through which the image conductor fiber bundle runs.
- the image guide channel part may be tubular or hollow cylindrical. This means that the image guide channel part has an elongated cavity or channel for receiving the image conductor fiber bundle.
- the image guide channel part can pass through the entire shaft part in a surgical instrument.
- the image guide channel part in particular the exterior of the image guide channel part, can deviate from a strict hollow cylindrical shape.
- the image guide channel part z. B. in its proximal end region one or more fasteners.
- the fastening elements are designed so that the connecting element described elsewhere can be attached to them.
- the fasteners z. B. as an external thread, as a groove or as a spring (to form a screw, tongue and groove or bung connection) may be formed.
- the image guide fiber bundle disposed in the image guide channel part is part of an image transmission system that transmits an image from the surgical site to the proximal end of the surgical instrument.
- Suitable image guide fiber bundles are known to those skilled in the art and include, in particular, glass fiber image guides.
- the optical filter element arranged at the proximal end of the image conductor fiber bundle is arranged in a sliding element.
- the sliding element preferably encloses the optical filter element along the entire circumference of the filter element, but not the end faces of the filter element.
- the sliding element preferably also has a hollow cylindrical shape for this purpose, in the interior of which the optical filter element is arranged. This means that the sliding element has a short cylindrical cavity or channel for receiving the optical filter element.
- the sliding element is arranged proximally of the image guide channel part in extension of its longitudinal axis.
- the eyepiece has a connecting element.
- the connecting element is arranged in the proximal end region of the image conductor channel part and is connected or connectable there to the image conductor channel part.
- the connecting element is preferably designed as a union nut.
- the connecting element has in its distal end region one or more fastening elements which are preferably at least partially complementary in shape to the fastening elements on the image guide channel part.
- the or the fasteners may, for. B. be formed as an internal thread on the connecting element.
- the connecting element would be designed as a union nut (with internal thread) whose internal thread in the mounted state meshes with an external thread arranged on the image conductor channel part (thus producing a screw connection).
- the sliding element is arranged longitudinally displaceable within the connecting element.
- This axial displaceability of the sliding element ensures that different thermal expansions of the processed components are compensated by a longitudinal displacement of the sliding element and not by a connection tear between the filter element and the fiber bundle.
- the axial displaceability basically allows both an axial movement of the sliding element to the distal and to the proximal.
- the sliding movement can z. B. be limited by stop surfaces described elsewhere.
- the slider is supported radially by fitting with the connector.
- the sliding element preferably comprises a distal section, which forms a fitting connection with a proximal section of the connecting element.
- the outside of the sliding element thus adjoins the inside of the connecting element substantially directly in this section.
- the mating connection is designed such that it allows an axial displacement of the sliding element, but ensures sufficient support radially.
- the mating connection is preferably a play or a transitional pass connection, wherein the play mating connection has no significant play (DIN 7154, clearance H7 / g6).
- the play mating connection has no significant play (DIN 7154, clearance H7 / g6).
- the play mating connection has no significant play (DIN 7154, clearance H7 / g6).
- a clearance H7 / g6 according to DIN 7154.
- the connecting element and / or the sliding element are preferably made of a plastic or metal.
- Suitable plastics and metals are known and include, for. B. PEEK (polyetheretherketone) or brass. The formation of both plastic elements is particularly preferred.
- the filter element is longitudinally displaceable.
- the filter element is preferably not movable or displaceable relative to the sliding element.
- the optical filter element is preferably connected by means of an adhesive layer with the sliding element.
- the filter element and the sliding element are preferably glued together.
- the filter element can be glued along its circumference, in particular completely along its circumference, at its outer edge to the inside of the sliding element.
- the adhesive used for the adhesive layer is preferably an inflexible adhesive.
- Suitable inflexible adhesives are in particular epoxy adhesives.
- the axial displaceability of the sliding element can be limited by abutment surfaces.
- the image guide channel part and / or the connecting element may comprise a stop (abutment surface) for the sliding element, which limits a movement of the sliding element in the axial direction.
- the image guide channel portion may include a stop for the slider that limits movement of the slider in the distal direction.
- the stop can be formed by a portion of the proximal end face of the image guide channel part.
- the connecting element may comprise a stop for the sliding element, which limits a movement of the sliding element in the distal direction.
- the sliding element may have a widened side edge in its proximal end region, which has a contact surface for the abutment of the connecting element.
- the stop of the connecting element may, for. B. formed by a portion of the proximal end face of the connecting element or through the entire end face.
- the connecting element comprises a (further) stop for the sliding element, which limits a movement of the sliding element in the proximal direction.
- the sliding element is preferably arranged completely within the connecting element.
- the invention relates to a surgical instrument, in particular endoscope, characterized in that it comprises an eyepiece device according to the invention.
- the surgical instrument is preferably an endoscope, z.
- an endoscope selected from the group consisting of laparoscopes, gastroscopes, colonoscopes, bronchoscopes and the like.
- the surgical instrument is typically an instrument (eg, endoscope) of the fiber canela type (Fiberscope), preferably a fiber optic endoscope.
- FIG. 1 shows a schematic and simplified side view of a surgical instrument according to the invention
- FIG. 2 is a schematic and simplified sectional view of an eyepiece device according to the invention.
- Fig. 3 shows the representation of Fig. 2 in reduced form (A) and a corresponding, simplified sectional view of the eyepiece device according to the invention, which allows a view from the proximal direction (B).
- FIG. 1 shows a schematic and simplified side view of a surgical instrument 12 according to the invention, which is designed as a rigid endoscope. It is understood that the eyepiece device 10 according to the invention, not shown here, equally suitable for flexible endoscopes.
- the surgical instrument 12 has in conventional endoscopic design a tubular shaft portion 32 and an optical fiber input port 34. By the latter, a light guide for illuminating the surgical site can be connected to the endoscope. A corresponding optical fiber bundle runs in a manner not shown here through the endoscope.
- the endoscope has an optical system for monitoring the site of intervention.
- the illustrated instrument is of a fiber relay endoscope type and accordingly has an image guide fiber bundle, not shown here, for image transfer between the engagement site and the camera head 38.
- the optical system further comprises an ocular funnel 36 and a connector 40 to an image processing unit.
- FIG. 2 shows a schematic and simplified sectional view of an eyepiece device 10 according to the invention, which is suitable for use in the endoscope shown in FIG. 1.
- the eyepiece device 10 has an image guide channel part 14, a connecting element 20 and a sliding element 22.
- the image guide channel part 14 is substantially hollow cylindrical. In the interior of the image guide channel part 14, a channel 42 is formed, through which the image conductor fiber bundle 16 extends. The channel 42 extends into the distal end region of the surgical instrument 12 (not illustrated here).
- the image conductor fiber bundle 16 is preferably a glass fiber bundle.
- the image guide fiber bundle 16 may be protected within the channel 42 in a manner not shown by adjacent elements. For example, the image conductor fiber bundle 16 may be enclosed by a channel or hose element.
- the image guide channel part 14 has a fastening element 48, which in this case is designed as a circumferential groove.
- a portion of the end face of the image guide channel part 14 serves as a stopper surface, which limits the movement of the slide member in the distal direction.
- the image guide fiber bundle 16 is connected to the filter element 18 by means of an optical adhesive (epoxy adhesive).
- the filter element 18 is an anti-Moire filter consisting of four glass layers, three of which are effective in reducing moire effects.
- the filter element 18 is provided on its outer periphery with an adhesive layer 30, by means of which it is connected to the cylindrical inner surface of the sliding member 22.
- the adhesive layer 30 consists of a cured epoxy resin adhesive.
- the glue is an inflexible glue.
- the sliding element 22 has in its proximal end region a widened side edge 46 (holding shoulder) which comprises a contact surface pointing distally.
- the contact surface 52 together with the stop 44 of the connecting element 20, limits the distal movement of the sliding element 22.
- the connecting element 20 serves to connect the image conductor channel part 14 and the sliding element 22.
- the connection between the connecting element 20 and the image conductor channel part 14 is fixed, so that the parts do not move relative to one another in the mounted state.
- the connecting element 20 has one or more protuberances (helical) extending in the interior of the connecting element 20, by means of which a screw connection between the connecting element 20 and the image conductor channel part 14 can be produced.
- a bung connection may be made of a plastic having a flexibility, for. B. to push the connecting element 20 from the proximal direction for producing a bung connection to the image guide channel part 14.
- the connection between the connecting element 20 and the sliding element 22 is designed such that a radial displacement of the sliding element 22 within the connecting element 20 is prevented, while an axial movement of the sliding element 22 in the interior of the connecting element 20 is made possible.
- the connecting element 20 has an at least partially hollow cylindrical design, wherein the sliding element 22 is longitudinally displaceable in the interior of the hollow cylinder.
- the longitudinal displacement of the sliding element 22 is limited by the connection between the image conductor fiber bundle 16 and the sliding element 22. Since the image guide fiber bundle 16 is preferably fixed distally, the maximum axial travel distance of the slide member 22 is limited to the extent of thermal expansion of the fiber bundle 16 in relation to the thermal expansion of the remaining components used.
- a gap 54 is formed between the proximal end of the image guide channel part 14 and the distal end of the optical filter element 18, the adhesive layer 30 and the sliding member 22, a gap 54 is formed. The size of the Gap 54 changes with the longitudinal displacement of the sliding member 22.
- the gap 54 may, for. B. be an air gap.
- the sliding element 22 is arranged (radially) accurately in the connecting element 20. This ensures that the sliding element 22 is longitudinally but not radially displaceable. The outer periphery of the slider 22 abuts the inner surface of the connector 20 during a longitudinal displacement.
- Fig. 3 shows the sectional view of Fig. 2 in reduced form (Fig. 3A) and beyond a corresponding rotated sectional view of the invention
- Eyepiece device 10 which allows a view from the proximal direction (B). It can be seen that in the illustrated embodiment, the optical filter element 18, as well as the other elements has a round or cylindrical cross-sectional shape.
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Optics & Photonics (AREA)
- Surgery (AREA)
- General Physics & Mathematics (AREA)
- Biomedical Technology (AREA)
- Molecular Biology (AREA)
- Pathology (AREA)
- Engineering & Computer Science (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Heart & Thoracic Surgery (AREA)
- Medical Informatics (AREA)
- Radiology & Medical Imaging (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Biophysics (AREA)
- Astronomy & Astrophysics (AREA)
- Instruments For Viewing The Inside Of Hollow Bodies (AREA)
- Endoscopes (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102018102385.5A DE102018102385A1 (de) | 2018-02-02 | 2018-02-02 | Okulareinrichtung für ein chirurgisches Instrument |
| PCT/EP2019/052482 WO2019149877A1 (de) | 2018-02-02 | 2019-02-01 | Okulareinrichtung für ein chirurgisches instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3746831A1 true EP3746831A1 (de) | 2020-12-09 |
Family
ID=65363262
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP19704255.9A Withdrawn EP3746831A1 (de) | 2018-02-02 | 2019-02-01 | Okulareinrichtung für ein chirurgisches instrument |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20210052147A1 (de) |
| EP (1) | EP3746831A1 (de) |
| DE (1) | DE102018102385A1 (de) |
| WO (1) | WO2019149877A1 (de) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102019114763A1 (de) | 2019-06-03 | 2020-12-03 | Olympus Winter & Ibe Gmbh | Endoskop mit verklebtem Lichtleiter |
| JP7513624B2 (ja) * | 2019-09-30 | 2024-07-09 | テルモ株式会社 | 医療デバイス |
| JP2026010576A (ja) * | 2024-07-09 | 2026-01-22 | オリンパスメディカルシステムズ株式会社 | フィルタ装置、および、内視鏡システム |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4105326A1 (de) | 1991-02-21 | 1992-09-03 | Wolf Gmbh Richard | Endoskop mit proximal ankuppelbarer kamera |
| US6025873A (en) | 1994-04-07 | 2000-02-15 | Olympus Optical Co., Ltd. | Endoscope system provided with low-pass filter for moire removal |
| US5665051A (en) * | 1994-08-12 | 1997-09-09 | Imagyn Medical | Endoscope with axially movable optical fiber guide to compensate changes in length |
| DE202004020545U1 (de) * | 2004-02-26 | 2005-07-28 | Olympus Winter & Ibe Gmbh | Starres Endoskop mit Faserbildleiter |
| DE102015000050A1 (de) * | 2015-01-09 | 2016-07-14 | Olympus Winter & Ibe Gmbh | Edoskopoptik |
| DE102015202002A1 (de) | 2015-02-05 | 2016-08-11 | Olympus Winter & Ibe Gmbh | Okulareinrichtung und chirurgisches Instrument mit einer Okulareinrichtung |
| DE102015202137A1 (de) | 2015-02-06 | 2016-08-11 | Olympus Winter & Ibe Gmbh | Okular für ein chirurgisches Instrument |
| DE102016006905A1 (de) * | 2016-06-08 | 2017-12-14 | OLYMPUS Winter & lbe GmbH | Starres Endoskop mit einem Faserbildleiter |
-
2018
- 2018-02-02 DE DE102018102385.5A patent/DE102018102385A1/de not_active Ceased
-
2019
- 2019-02-01 EP EP19704255.9A patent/EP3746831A1/de not_active Withdrawn
- 2019-02-01 US US16/964,634 patent/US20210052147A1/en not_active Abandoned
- 2019-02-01 WO PCT/EP2019/052482 patent/WO2019149877A1/de not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| US20210052147A1 (en) | 2021-02-25 |
| WO2019149877A1 (de) | 2019-08-08 |
| DE102018102385A1 (de) | 2019-08-08 |
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