US20080058598A1 - Connector for a combination cable - Google Patents
Connector for a combination cable Download PDFInfo
- Publication number
- US20080058598A1 US20080058598A1 US11/978,684 US97868407A US2008058598A1 US 20080058598 A1 US20080058598 A1 US 20080058598A1 US 97868407 A US97868407 A US 97868407A US 2008058598 A1 US2008058598 A1 US 2008058598A1
- Authority
- US
- United States
- Prior art keywords
- light guide
- connector
- socket
- combination cable
- light
- 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.)
- Abandoned
Links
- 230000005693 optoelectronics Effects 0.000 claims description 24
- 238000001839 endoscopy Methods 0.000 claims description 9
- 230000000007 visual effect Effects 0.000 claims description 7
- 230000003287 optical effect Effects 0.000 claims description 6
- 238000005286 illumination Methods 0.000 claims description 5
- 238000010276 construction Methods 0.000 claims description 4
- 238000003780 insertion Methods 0.000 description 6
- 230000037431 insertion Effects 0.000 description 6
- 238000005452 bending Methods 0.000 description 3
- 238000011156 evaluation Methods 0.000 description 3
- 230000008093 supporting effect Effects 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- 210000003811 finger Anatomy 0.000 description 2
- 230000001954 sterilising effect Effects 0.000 description 2
- 238000004659 sterilization and disinfection Methods 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 238000004873 anchoring Methods 0.000 description 1
- 238000003491 array Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 210000003813 thumb Anatomy 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/36—Mechanical coupling means
- G02B6/38—Mechanical coupling means having fibre to fibre mating means
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/36—Mechanical coupling means
- G02B6/38—Mechanical coupling means having fibre to fibre mating means
- G02B6/3807—Dismountable connectors, i.e. comprising plugs
- G02B6/381—Dismountable connectors, i.e. comprising plugs of the ferrule type, e.g. fibre ends embedded in ferrules, connecting a pair of fibres
- G02B6/3817—Dismountable connectors, i.e. comprising plugs of the ferrule type, e.g. fibre ends embedded in ferrules, connecting a pair of fibres containing optical and electrical conductors
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/4298—Coupling light guides with opto-electronic elements coupling with non-coherent light sources and/or radiation detectors, e.g. lamps, incandescent bulbs, scintillation chambers
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/36—Mechanical coupling means
- G02B6/38—Mechanical coupling means having fibre to fibre mating means
- G02B6/3807—Dismountable connectors, i.e. comprising plugs
- G02B6/381—Dismountable connectors, i.e. comprising plugs of the ferrule type, e.g. fibre ends embedded in ferrules, connecting a pair of fibres
- G02B6/3825—Dismountable connectors, i.e. comprising plugs of the ferrule type, e.g. fibre ends embedded in ferrules, connecting a pair of fibres with an intermediate part, e.g. adapter, receptacle, linking two plugs
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/36—Mechanical coupling means
- G02B6/38—Mechanical coupling means having fibre to fibre mating means
- G02B6/3807—Dismountable connectors, i.e. comprising plugs
- G02B6/3897—Connectors fixed to housings, casing, frames or circuit boards
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T403/00—Joints and connections
- Y10T403/59—Manually releaseable latch type
- Y10T403/591—Manually releaseable latch type having operating mechanism
Definitions
- the light guide in the combination cable is used for transmitting light of a light source located in the supply and evaluating device into the area of the optoelectronic camera, so as to illuminate at least part of the visual range of the optoelectronic camera with light from the light source.
- the light passing out of the light guide does not necessarily have to directly strike the area to be illuminated and can instead be passed to said area by deflection using a further light guide or other optical means.
- the light guide can comprise a monofilament or several light-conducting fibres.
- the combination cable is normally fixed to the supply and evaluating device.
- the light guide extends into the vicinity of the light source, so that light from the latter is efficiently fed into the same. This avoids connections between light guides, which either lead to high losses or which can only be produced with considerable effort and expenditure.
- the problem of the invention is to provide devices to detachably connect a combination cable comprising at least one light guide and several electric lines to other devices, whilst creating a combination cable suitable for detachable connections.
- the contact elements for the connector according to the invention are positioned on at least one circle running coaxially to the light guide holder.
- the contact elements in the socket according to the invention are also located on at least one circle passing coaxially to the light guide holder.
- the contact elements of the connector they can be constituted by contact pins and then the socket contact elements are preferably constructed as contact springs.
- the contact pins can also be located in the socket, so that the contact elements of the inventive connector are constituted by contact springs.
- the portion projecting out of the body is preferably constructed in such a way that the light guide end is positioned outside the socket when the connector is plugged into said socket.
- the light guide prefferably for the light guide to project from the body in the plugging direction by at least four times its diameter.
- the light guide of the combination cable according to the invention projects in the plugging direction out of the body by at least 10 mm and in particularly preferred manner by 30 mm.
- the light guide diameter it is possible to avoid high heat loading of the socket, of the electrical connections connected to the contact elements of said socket and the housing wall holding the socket by a light source, whose light is fed into the light guide of the combination cable.
- the light guide holder portion extending beyond the body in the plugging direction has a length of at least 10 mm and in particularly preferred manner 30 mm, in order to bring about an adequate stiffening and supporting of a light guide introduced into the light guide holder channel.
- the light guide portion of an inventive combination cable projecting over the connector body can be particularly long in order to permit an adequately large spacing between a light source and a socket receiving the connector.
- the light guide holder can receive the light guide at least up to its free end.
- the light guide holder of the inventive connector at least in the portion extending beyond the body in the plugging direction has a tubular construction, which firstly, as a result of symmetry, can significantly facilitate the first insertion of the light guide holder into the socket channel and secondly permits inexpensive manufacture.
- a sleeve movable parallel to the plugging direction and surrounding the connector body is provided and this makes it possible to release a latching connection with respect to a socket. This makes it possible in simple manner to release the connector from a socket.
- the other end of the combination cable according to the invention is connected to a camera head, which has an optoelectronic camera connected to the electric lines provided with a focussing device adjustable for focussing purposes and a light guide channel open in the camera viewing direction and in which is located the light guide for illuminating at least part of the visual range detectable by the camera.
- the viewing range is here understood to mean the range which is imaged by the optoelectronic camera and which when using corresponding optical devices need not be located directly in front of said camera.
- the statement that the light guide is provided for illuminating at least part of the visual range covered by the camera also does not mean that this range or area must be directly illuminated, but instead that light exiting the light guide can be deflected either by a further light guide or by other optical devices onto the area to be imaged by the optoelectronic camera.
- Such a combination cable with camera head can be easily connected in detachable manner to a supply and evaluating unit.
- the combination cable with camera head can be separated from the supply and evaluating unit for cleaning and/or sterilization or for interchanging with another combination cable.
- the camera head preferably has a movable focussing ring, which is so connected to the focussing device that by moving the focussing ring the focussing device is adjustable. This makes it possible for the camera head user, particularly when using it in conjunction with an endoscopy system, to simultaneously hold the camera head and focus the optoelectronic camera with a single finger, e.g. the thumb.
- an optical device for focussing the light emitted by the light source onto the end of the light guide.
- the spacing between the socket and the focussing device is made to correspond to the length of the light guide portion extending beyond the body in the plugging direction, which ensures a particularly high light efficiency.
- a further object of the invention is a plug connection system with an inventive connector and an inventive socket.
- the combination cable can be easily removed for cleaning and/or sterilization or easily replaced in the case of damage. It is also possible to use combination cables of different lengths with a single supply and evaluating device.
- FIGS. 2 a and 2 b Diagrammatic, perspective views of a portion of the combination cable with the connector according to the preferred embodiments of the invention.
- FIG. 2C A transverse, cross sectional view of a preferred embodiment of the socket corresponding to the connector of FIG. 2B .
- FIG. 3 A part sectional view of the connector of FIG. 2A or 2 B in a socket according to the preferred embodiment of the invention.
- FIG. 4 A diagrammatic sectional view through the camera head of FIG. 1 .
- the combination cable 6 is used for transmitting a supply voltage and electric signals between the camera head 2 and the supply and evaluating device 4 and for the supply of light to the camera head 2 from the supply and evaluating device 4 .
- the combination cable 6 has in a jacket 8 a light guide 10 and several electric lines 12 .
- the light guide 10 comprises a group of light-conducting fibres.
- the supply and evaluating device 4 has an electronic unit 20 connected to the socket 16 .
- a light source 22 is also provided and its light can be focussed by means of a lens 24 .
- the connector 14 in conjunction with the socket 16 are used for the connection of the combination cable 6 to the supply and evaluating device 4 .
- the connector 14 has a sleeve-like body 26 with a circular cross-section, which is connected to one end of the combination cable 6 , the transition between the body 26 and combination cable 6 being covered by a plastic cuff 28 .
- a light guide holder 30 is positioned to have a longitudinal axis A coaxially to the body 26 and in the plugging direction X extends beyond the body 26 by approximately 65 mm and in a channel 32 contains the light guide 10 of the combination cable 6 , which terminates at the end of channel 32 located in plugging direction X.
- the light guide holder 30 is shown in greater detail in FIG. 3 . It is essentially tubular with a wall thickness of approximately 0.5 mm and has a fixing portion 34 with a greater wall thickness, to which the light guide holder is fixed in a holding ring 36 secured in body 26 . At its end located in the plugging direction X, the light guide holder 30 is bevelled in order to permit easy insertion of the connector into socket 16 .
- the light guide holder 30 also has a stiffening tube 38 with a length of approximately 33 mm and a wall thickness of approximately 0.5 mm, which surrounds the tubular portion of the light guide holder 30 receiving the light guide 10 and which extends by roughly a third into the socket 16 and by two thirds beyond the same in the plugging direction X, when the connector 14 is plugged into the socket 16 .
- the holding ring 36 contains sixteen contact pins (cf. FIG. 2A ) on a circle coaxial to the body 26 , the light guide 10 and light guide holder 30 and which by means of connector terminals, whereof only terminal 42 is visible in FIG. 3 , are connected to electric lines 12 of combination cable 6 (of FIG. 3 ).
- the socket 16 located in the housing wall 18 of the supply and evaluating device 4 has a socket body 44 , which is provided with an external thread 46 and a collar 48 , so that it can be slid into an opening in the housing wall 18 , as is diagrammatically shown in FIG. 1 and can be fixed by a nut 50 screwed onto the external thread 46 .
- the socket body 44 is pot-shaped, so that the body 26 of connector 14 can be engaged in the pot opening of the socket body 44 .
- the socket body 44 also contains a hollow cylindrical portion 52 , whose external diameter is selected in such a way that the wall of the body 26 of connector 14 can be slid with only limited tolerance between the inner wall of the socket body 44 and the outer wall of the hollow cylindrical portion 52 .
- the tubular portion also has holes 54 with contact spring elements, which are conductively connected to corresponding socket terminals on the other side of the socket body 44 , whereof only socket terminal 56 is shown in FIG. 3 .
- the contact spring elements are connected to the electronic unit 20 .
- the holes 54 are positioned in such a way that on inserting the body 26 into the socket body 44 , the contact pins 40 of the connector can be introduced into the holes 54 with contact spring elements of socket 16 .
- the hollow cylindrical portion 52 together with a corresponding hole in the socket body 44 , forms a socket channel 60 , whose internal diameter corresponds to the external diameter of the fixing portion 34 .
- the external diameter of the light guide holder 30 in the area upstream of the fixing portion 34 in the plugging direction is smaller than in the fixing portion 34 , this permits an easy introduction of the light guide holder 30 into the socket channel 60 .
- Simultaneously as a result of the press fit between the fixing portion 34 and socket channel 60 there is a precise positioning of the light guide holder 30 and consequently the light guide 10 contained therein.
- the light guide holder 30 with the light guide 10 projects in the plugging direction beyond the body 26 , as shown in FIG. 3 and following the insertion into the socket 16 through socket channel 60 continues well into the interior of the housing of the supply and evaluating unit 4 (cf. FIG. 1 ).
- the light source 22 and the focussing lens 24 are positioned directly upstream of the end of light guide 10 , so that a precise focussing of the light of light source 22 onto the end of the light guide 10 is ensured by the precise positioning of the light guide holder 30 and consequently a good feeding in of light takes place.
- This arrangement ensures a comparatively large spacing between the light source 22 and lens 24 from the portion of socket 16 located within the housing of the supply and evaluating device 4 , so that neither the housing wall 18 , socket 16 nor socket terminals 56 on socket 16 , which in the fitted state normally have soldered connections, are exposed to the heat given off by the light source 22 .
- the length of the portion of light guide holder 30 extending beyond the body 26 in the plugging direction is approximately 65 mm.
- a centring can also be brought about as shown in FIGS. 2B and 2C in that the cross-section of the light guide holder of the connector according to the invention in a centring portion C which, considered in the plugging direction, is located between the contact elements 40 and the end of the light guide holder 30 ′ is not rotationally symmetrical to the axis A extending in the plugging direction, as shown in FIG. 2B .
- the channel 60 ′ in the socket body 44 ′ of the socket 16 ′ according to the invention then preferably has a portion with a cross-section, whose shape corresponds to the cross-section of the non-rotationally symmetrical light guide holder portion C, as shown in FIG. 2C .
- a focussing ring 70 On the camera head 2 is provided a focussing ring 70 , which can be turned around the optical axis of the CCD camera 62 .
- a pin 72 By means of a pin 72 the movement of the focussing ring 70 can be transferred to the focussing device 66 , so that by solely moving the focussing ring 70 , an image acquired with the CCD camera can be easily focussed with one finger.
- the light guide channel 74 opening in the viewing direction of the CCD camera 62 and into which leads the light guide 10 of combination cable 6 .
- the light guide channel 74 is positioned in such a way that the light transmitted via the light guide 10 enables the illumination of at least part of the visual range of the CCD camera 62 .
- a push-button switch 76 On the top of the camera head and connected to two electric lines 12 is provided a push-button switch 76 , which is able to trigger the storage in the electronic unit 20 of an image recorded by the CCD camera 62 and transmitted to the supply and evaluating device 4 .
Abstract
A connector for a combination cable comprising at least one light guide and several electric lines has a body, which can be introduced in the plugging direction into a socket and by means of which the connector can be held in the socket, a light guide holder having a light guide reception channel open at both sides and at least two contact elements in each case connectable to one of the electric lines.
Description
- This application is a continuation application of U.S. application Ser. No. 10/488,525, filed Mar. 3, 2004, the contents of which are incorporated herein by reference.
- The present invention relates to a connector for a combination cable comprising at least one light guide and several electric lines, a combination cable with such a connector, as well as a socket for use with the connector.
- Combination cables with a light guide and several electric lines are fundamentally known and are e.g. used in endoscopy systems with an optoelectronic camera, e.g. a CCD camera. The electric lines in the combination cable are used for connecting the optoelectronic camera to a supply and evaluating device, in order to on the one hand supply a supply voltage to the optoelectronic camera and on the other to transfer image data or arrays acquired by the camera to the supply and evaluating device, where evaluation thereof takes place. The light guide in the combination cable is used for transmitting light of a light source located in the supply and evaluating device into the area of the optoelectronic camera, so as to illuminate at least part of the visual range of the optoelectronic camera with light from the light source. In the case of endoscopy systems, the light passing out of the light guide does not necessarily have to directly strike the area to be illuminated and can instead be passed to said area by deflection using a further light guide or other optical means.
- The light guide can comprise a monofilament or several light-conducting fibres.
- In order to ensure a maximum illumination level at the reception location accompanied by a low power consumption of the light source, the combination cable is normally fixed to the supply and evaluating device. The light guide extends into the vicinity of the light source, so that light from the latter is efficiently fed into the same. This avoids connections between light guides, which either lead to high losses or which can only be produced with considerable effort and expenditure.
- However, certain disadvantages result from the fixed connection between combination cable and supply and evaluating device.
- Thus, it is only possible to a certain extent to clean and/or sterilize the combination cable, which must generally pass into the vicinity of the patient to be treated, because generally the supply and evaluating device is not sterilizable due to the electronics contained therein.
- Moreover, in the case of damage to the combination cable, simple replacement thereof is impossible. Changing between cables of different lengths is also impossible, although such a possibility of change would be desirable, particularly when using the endoscopy system for different treatment types.
- The problem of the invention is to provide devices to detachably connect a combination cable comprising at least one light guide and several electric lines to other devices, whilst creating a combination cable suitable for detachable connections.
- This problem is solved by a connector having the features of claim 1, a combination cable having the features of claim 7 and a socket having the features of
claim 14. - A connector according to the invention for a combination cable of the aforementioned type has a body, which can be inserted in a socket in a plugging direction and by means of which the connector can be held in the socket, a light guide holder having a channel open at both sides for receiving the light guide and at least two contact elements in each case connectable to one of the electric lines.
- As a result of the construction of the connector according to the invention, it is simultaneously possible to provide a connection for the light guide and the electric lines.
- The combination cable according to the invention has at least one light guide and at least two electric lines. One end of the combination cable is connected to the connector according to the invention and electric lines of the combination cable are conductively connected to contact elements of the connector. The light guide is so positioned in the channel of the light guide holder, that it projects from the body in the plugging direction. This is made possible by the inventive channel in the light guide holder of the connector.
- The light guide can comprise a single monofilament or also a group of light-conducting fibres.
- A socket according to the invention has a socket body for receiving the connector according to the invention and a socket channel, passing through the socket, for receiving a portion of a light guide to be inserted in the inventive connector when the latter is plugged into the socket and contact elements connectable to electric lines for contacting the contact elements of the inventive connector.
- Through the combination of the inventive connector on an inventive combination cable with the inventive socket it is possible to easily provide a detachable connection both for the light guide and for the electric lines. In particular, light from a light source can be fed directly into the light guide of the combination cable, if the connector with said combination cable is plugged into the inventive socket, the light guide extending through the inventive light guide holder channel and the light guide portion projecting from the body in the plugging direction can be guided by the inventive socket channel directly into the area of the light source, so that the feeding in of light requires no further connection between two light guides and the intensity losses resulting from such a connection can be avoided.
- Further developments and preferred embodiments of the invention are described in the description, claims and drawings.
- Preferably the contact elements for the connector according to the invention are positioned on at least one circle running coaxially to the light guide holder. The contact elements in the socket according to the invention are also located on at least one circle passing coaxially to the light guide holder. This symmetrical arrangement makes it possible to press the connector into the socket without significant tilting. Thus, a light guide projecting from the connector body on insertion into the socket channel can be less easily deformed and possibly damaged through tilting.
- In particularly preferred manner for this purpose, the contact elements are mutually spaced by identical angular distances.
- In the case of the contact elements of the connector, they can be constituted by contact pins and then the socket contact elements are preferably constructed as contact springs. However, the contact pins can also be located in the socket, so that the contact elements of the inventive connector are constituted by contact springs.
- Preferably a portion of the inventive connector body open in the plugging direction has a sleeve-like construction, the contact elements being located within the sleeve portion of the body. Thus, particularly when the contact elements are constituted by contact pins, the contact elements are on the one hand protected against mechanical damage and on the other against unintentional contacting with e.g. statically charged objects. In addition, a contacting between the contact elements of the connector and the socket at an appropriate sleeve depth can only take place when the body is guided by the socket body, so that there can be no contact element-damaging tilting of the connector in the socket.
- In order to be able to position at a greater distance from the socket a light source whose light is to be fed into the light guide of an inventive combination cable, the portion projecting out of the body is preferably constructed in such a way that the light guide end is positioned outside the socket when the connector is plugged into said socket.
- With the combination cable according to the invention, it is preferable for the light guide to project from the body in the plugging direction by at least four times its diameter.
- Preferably the light guide of the combination cable according to the invention and independently of its diameter projects in the plugging direction out of the body by at least 10 mm and in particularly preferred manner by 30 mm. Thus, independently of the light guide diameter, it is possible to avoid high heat loading of the socket, of the electrical connections connected to the contact elements of said socket and the housing wall holding the socket by a light source, whose light is fed into the light guide of the combination cable.
- The portion of the light guide of the inventive combination cable projecting from the connector body can be deformed or even broken off by the weight of the light guide or by careless or incorrect handling of the connector or a combination cable provided therewith and this can often lead to damage to the light guide. In order to prevent bending of the light guide portion projecting from the body, said portion can be provided in the combination cable according to the invention in preferred manner at least in the portion projecting over the body in the plugging direction with an element stiffening the light guide and preferably a corresponding, bending-resistant jacket.
- However, preferably the supporting and guiding of the light guide takes place by means of the light guide holder of the connector according to the invention, which for this purpose projects beyond the body in the plugging direction. Thus, the light guide located in the light guide holder channel can be particularly well protected against deformations, particularly bending. In this case the socket channel is constructed in such a way that the light guide holder can be inserted in said channel.
- Preferably the light guide holder portion extending beyond the body in the plugging direction has a length of at least 10 mm and in particularly
preferred manner 30 mm, in order to bring about an adequate stiffening and supporting of a light guide introduced into the light guide holder channel. As a result of such a supporting action the light guide portion of an inventive combination cable projecting over the connector body can be particularly long in order to permit an adequately large spacing between a light source and a socket receiving the connector. In particularly preferred manner the light guide holder can receive the light guide at least up to its free end. - Preferably the light guide holder of the inventive connector, at least in the portion extending beyond the body in the plugging direction has a tubular construction, which firstly, as a result of symmetry, can significantly facilitate the first insertion of the light guide holder into the socket channel and secondly permits inexpensive manufacture.
- In particularly preferred manner on the connector and the socket body can be provided guide elements, which ensure the centring necessary for the contacting of the contact elements and an azimuthal orientation of the connector with the socket. These can in particular be constituted by a lug on the connector or in the socket and a corresponding recess in the socket or in the connector.
- However, preferably, a centring can also be brought about in that the cross-section of the light guide holder of the connector according to the invention in a centring portion which, considered in the plugging direction, is located between the contact elements and the end of the light guide holder is not rotationally symmetrical to an axis extending in the plugging direction. The channel of the socket according to the invention then preferably has a portion with a cross-section, whose shape corresponds to the cross-section of the non-rotationally symmetrical light guide holder portion. The cross-sections are chosen in such a way that it is possible to completely insert the light guide holder portion projecting over the body in the plugging direction into the socket channel. Thus, following the insertion of the light guide holder into the socket channel, there can simultaneously be an azimuthal orientation of the contact elements with respect to one another. Such a cross-section change can also lead to a further mechanical stiffening.
- In order to permit a reliable anchoring of the inventive connector in an inventive socket, the connector body is preferably provided on its outer circumference with an element for a latching connection, by means of which the connector can be locked in the inventive socket which has a corresponding element for the latching connection. The latching elements can e.g. be a resilient catch on the connector and a corresponding recess in the socket body. However, in principle, the latch can also be located in the socket, the connector body then having a corresponding recess.
- In particularly preferred manner, a sleeve movable parallel to the plugging direction and surrounding the connector body is provided and this makes it possible to release a latching connection with respect to a socket. This makes it possible in simple manner to release the connector from a socket.
- Preferably the other end of the combination cable according to the invention is connected to a camera head, which has an optoelectronic camera connected to the electric lines provided with a focussing device adjustable for focussing purposes and a light guide channel open in the camera viewing direction and in which is located the light guide for illuminating at least part of the visual range detectable by the camera. The viewing range is here understood to mean the range which is imaged by the optoelectronic camera and which when using corresponding optical devices need not be located directly in front of said camera. Thus, the statement that the light guide is provided for illuminating at least part of the visual range covered by the camera also does not mean that this range or area must be directly illuminated, but instead that light exiting the light guide can be deflected either by a further light guide or by other optical devices onto the area to be imaged by the optoelectronic camera.
- Such a combination cable with camera head can be easily connected in detachable manner to a supply and evaluating unit. Thus, the combination cable with camera head can be separated from the supply and evaluating unit for cleaning and/or sterilization or for interchanging with another combination cable.
- For easy focussing purposes, the camera head preferably has a movable focussing ring, which is so connected to the focussing device that by moving the focussing ring the focussing device is adjustable. This makes it possible for the camera head user, particularly when using it in conjunction with an endoscopy system, to simultaneously hold the camera head and focus the optoelectronic camera with a single finger, e.g. the thumb.
- In order to permit easy operation of the optoelectronic camera or other electronic devices, a corresponding switching device is provided on the camera head portion located in front of the optoelectronic camera in the viewing direction. In particular, the electric lines leading to said switching device can be the lines of the combination cable. This makes it possible with only one hand to simultaneously guide the optoelectronic camera and at certain times to store and/or print out images acquired by said camera by operating the switching device.
- In particular in conjunction with the movable focussing ring, this leads to a camera head which can be very easily operated with one hand, together with an optoelectronic camera, which as such may not have the combination cable and/or connector according to the invention.
- A further object of the invention is a device for coupling or feeding light into the light guide of an inventive combination cable, which has an inventive socket and a light source, which is positioned in said device in such a way that the light emitted by the light source can be fed into the light guide located in the inventive connector of the combination cable, when said connector is plugged into the socket. In particular, a corresponding spacing can be provided between the socket and light source and this corresponds to the length of the light guide portion extending beyond the body in the plugging direction.
- In particularly preferred manner and for the better feeding in of the light emitted by the light source, there is an optical device for focussing the light emitted by the light source onto the end of the light guide. Preferably the spacing between the socket and the focussing device is made to correspond to the length of the light guide portion extending beyond the body in the plugging direction, which ensures a particularly high light efficiency.
- A further object of the invention is a plug connection system with an inventive connector and an inventive socket.
- A further object of the invention is an endoscopy system with an optoelectronic camera, a supply and evaluating device with a light source and a combination cable, which comprises a light guide for illuminating at least part of the visual range of the optoelectronic camera with light from the light source and electric lines for the electrical connection of the optoelectronic camera to the supply and evaluating device, in which the combination cable can be connected in detachable manner to the supply and evaluating device. This can in particular be achieved when using an inventive combination cable and a corresponding inventive socket and an inventive device for feeding light into the light guide of the inventive combination cable.
- In such an endoscopy system the combination cable can be easily removed for cleaning and/or sterilization or easily replaced in the case of damage. It is also possible to use combination cables of different lengths with a single supply and evaluating device.
- A preferred embodiment of the invention is now described in exemplified manner relative to the attached drawings, wherein show:
-
FIG. 1 A diagrammatic, partial view of an endoscopy system according to a preferred embodiment of the invention. -
FIGS. 2 a and 2 b Diagrammatic, perspective views of a portion of the combination cable with the connector according to the preferred embodiments of the invention. -
FIG. 2C A transverse, cross sectional view of a preferred embodiment of the socket corresponding to the connector ofFIG. 2B . -
FIG. 3 A part sectional view of the connector ofFIG. 2A or 2B in a socket according to the preferred embodiment of the invention. -
FIG. 4 A diagrammatic sectional view through the camera head ofFIG. 1 . - In
FIG. 1 an endoscopy system according to a preferred embodiment of the invention has a camera head 2 with an illumination system, a supply and evaluating device 4 and acombination cable 6 connecting the camera head 2 to the supply and evaluating device 4 in accordance with an exemplified embodiment of the invention. - The
combination cable 6 is used for transmitting a supply voltage and electric signals between the camera head 2 and the supply and evaluating device 4 and for the supply of light to the camera head 2 from the supply and evaluating device 4. - For this purpose the
combination cable 6 has in a jacket 8 alight guide 10 and severalelectric lines 12. As is not shown in the drawings, thelight guide 10 comprises a group of light-conducting fibres. - Whilst the camera head 2 is connected in fixed manner to the end of the
combination cable 6, by means of aconnector 14 located at the other cable end, by means of asocket 16 in ahousing wall 18 of the supply and evaluating device 4, the combination cable is connected thereto. - For the supply of the camera head and the evaluation of the images taken, the supply and evaluating device 4 has an
electronic unit 20 connected to thesocket 16. Alight source 22 is also provided and its light can be focussed by means of a lens 24. - The
connector 14 in conjunction with thesocket 16 are used for the connection of thecombination cable 6 to the supply and evaluating device 4. InFIG. 2A theconnector 14 has a sleeve-like body 26 with a circular cross-section, which is connected to one end of thecombination cable 6, the transition between thebody 26 andcombination cable 6 being covered by aplastic cuff 28. - A
light guide holder 30 is positioned to have a longitudinal axis A coaxially to thebody 26 and in the plugging direction X extends beyond thebody 26 by approximately 65 mm and in achannel 32 contains thelight guide 10 of thecombination cable 6, which terminates at the end ofchannel 32 located in plugging direction X. - The
light guide holder 30 is shown in greater detail inFIG. 3 . It is essentially tubular with a wall thickness of approximately 0.5 mm and has a fixingportion 34 with a greater wall thickness, to which the light guide holder is fixed in a holding ring 36 secured inbody 26. At its end located in the plugging direction X, thelight guide holder 30 is bevelled in order to permit easy insertion of the connector intosocket 16. - The
light guide holder 30 also has a stiffeningtube 38 with a length of approximately 33 mm and a wall thickness of approximately 0.5 mm, which surrounds the tubular portion of thelight guide holder 30 receiving thelight guide 10 and which extends by roughly a third into thesocket 16 and by two thirds beyond the same in the plugging direction X, when theconnector 14 is plugged into thesocket 16. - In the interior of the
body 26, the holding ring 36 contains sixteen contact pins (cf.FIG. 2A ) on a circle coaxial to thebody 26, thelight guide 10 andlight guide holder 30 and which by means of connector terminals, whereof only terminal 42 is visible inFIG. 3 , are connected toelectric lines 12 of combination cable 6 (ofFIG. 3 ). - The
socket 16 located in thehousing wall 18 of the supply and evaluating device 4 has asocket body 44, which is provided with anexternal thread 46 and acollar 48, so that it can be slid into an opening in thehousing wall 18, as is diagrammatically shown inFIG. 1 and can be fixed by anut 50 screwed onto theexternal thread 46. - The
socket body 44 is pot-shaped, so that thebody 26 ofconnector 14 can be engaged in the pot opening of thesocket body 44. - The
socket body 44 also contains a hollowcylindrical portion 52, whose external diameter is selected in such a way that the wall of thebody 26 ofconnector 14 can be slid with only limited tolerance between the inner wall of thesocket body 44 and the outer wall of the hollowcylindrical portion 52. - As is only diagrammatically shown in
FIG. 3 , the tubular portion also has holes 54 with contact spring elements, which are conductively connected to corresponding socket terminals on the other side of thesocket body 44, whereofonly socket terminal 56 is shown inFIG. 3 . By means of the socket terminals and lines which are e.g. soldered thereto and whereofFIG. 3 only showsline 58, the contact spring elements are connected to theelectronic unit 20. The holes 54 are positioned in such a way that on inserting thebody 26 into thesocket body 44, the contact pins 40 of the connector can be introduced into the holes 54 with contact spring elements ofsocket 16. - The hollow
cylindrical portion 52, together with a corresponding hole in thesocket body 44, forms asocket channel 60, whose internal diameter corresponds to the external diameter of the fixingportion 34. As the external diameter of thelight guide holder 30 in the area upstream of the fixingportion 34 in the plugging direction is smaller than in the fixingportion 34, this permits an easy introduction of thelight guide holder 30 into thesocket channel 60. Simultaneously as a result of the press fit between the fixingportion 34 andsocket channel 60, there is a precise positioning of thelight guide holder 30 and consequently thelight guide 10 contained therein. - According to the invention the
light guide holder 30 with thelight guide 10 projects in the plugging direction beyond thebody 26, as shown inFIG. 3 and following the insertion into thesocket 16 throughsocket channel 60 continues well into the interior of the housing of the supply and evaluating unit 4 (cf.FIG. 1 ). Thelight source 22 and the focussing lens 24 are positioned directly upstream of the end oflight guide 10, so that a precise focussing of the light oflight source 22 onto the end of thelight guide 10 is ensured by the precise positioning of thelight guide holder 30 and consequently a good feeding in of light takes place. - This arrangement ensures a comparatively large spacing between the
light source 22 and lens 24 from the portion ofsocket 16 located within the housing of the supply and evaluating device 4, so that neither thehousing wall 18,socket 16 norsocket terminals 56 onsocket 16, which in the fitted state normally have soldered connections, are exposed to the heat given off by thelight source 22. In the exemplified case, for this purpose the length of the portion oflight guide holder 30 extending beyond thebody 26 in the plugging direction is approximately 65 mm. - A centring can also be brought about as shown in
FIGS. 2B and 2C in that the cross-section of the light guide holder of the connector according to the invention in a centring portion C which, considered in the plugging direction, is located between thecontact elements 40 and the end of thelight guide holder 30′ is not rotationally symmetrical to the axis A extending in the plugging direction, as shown inFIG. 2B . Thechannel 60′ in thesocket body 44′ of thesocket 16′ according to the invention then preferably has a portion with a cross-section, whose shape corresponds to the cross-section of the non-rotationally symmetrical light guide holder portion C, as shown inFIG. 2C . The cross-sections are chosen in such a way that it is possible to completely insert the lightguide holder portion 30 projecting over thebody 26 in the plugging direction into thesocket channel 60′. Thus, following the insertion of thelight guide holder 30′ into thesocket channel 60′, there can simultaneously be an azimuthal orientation of thecontact elements 40 with respect to one another. Such a cross-section change can also lead to a further mechanical stiffening. - The camera head is shown in greater detail in
FIG. 4 . It has aCCD camera 62, which is equipped with aCCD sensor 64 connected to theelectric lines 12 and an only diagrammatically shown focussing device 66 with alens system 68 with which light entering the camera head can be focussed onto theCCD sensor 64. Image signals generated by theCCD sensor 64 are transmitted to the supply and evaluating device 4 for evaluation purposes. - On the camera head 2 is provided a
focussing ring 70, which can be turned around the optical axis of theCCD camera 62. By means of apin 72 the movement of the focussingring 70 can be transferred to the focussing device 66, so that by solely moving the focussingring 70, an image acquired with the CCD camera can be easily focussed with one finger. - On the camera head is also provided a
light guide channel 74 opening in the viewing direction of theCCD camera 62 and into which leads thelight guide 10 ofcombination cable 6. Thus, thelight guide channel 74 is positioned in such a way that the light transmitted via thelight guide 10 enables the illumination of at least part of the visual range of theCCD camera 62. - On the top of the camera head and connected to two
electric lines 12 is provided a push-button switch 76, which is able to trigger the storage in theelectronic unit 20 of an image recorded by theCCD camera 62 and transmitted to the supply and evaluating device 4. - The
camera head 6 withCCD camera 62, with illumination by thelight guide 10, the focussingring 70 and the push-button switch 76 allow the camera to be easily handled with one hand. -
2 Camera head 4 Supply and evaluating device 6 Combination cable 8 Jacket 10 Light guide 12 Electric lines 14 Connector 16 Sockets 18 Housing wall 20 Electronic unit 22 Light source 24 Lens 26 Body 28 Cuff 30 Light guide holder 32 Channel 34 Fixing portion 36 Holding ring 38 Stiffening tube 40 Contact pins 42 Connector terminal 44 Socket body 46 External thread 48 Collar 50 Nut 52 Hollow cylindrical portion 54 Holes with contact spring elements 56 Socket terminal 58 Line 60 Socket channel 62 CCD camera 64 CCD sensor 66 Focussing device 68 Lens system 70 Focussing ring 72 Pin 74 Light guide channel 76 Push-button switch
Claims (20)
1. Connector for a combination cable comprising at least one light guide and several electric lines, having a body, which can be inserted in a plugging direction into a socket and by means of which the connector can be held in the socket, a light guide holder having a channel open at both sides for receiving the light guide and a plurality of contact elements in each case connectable to one of the electric lines, wherein the contact elements are positioned on at least one circle coaxial to the light guide holder.
2. Connector according to claim 1 , wherein the light guide holder extends beyond the body in the plugging direction.
3. Connector according to claim 2 , wherein the portion of the light guide holder extending beyond the body in the plugging direction has a length of at least 10 mm.
4. Connector according to claim 2 , wherein at least in the portion extending beyond the body in the plugging direction, the light guide holder has a tubular construction.
5. Combination cable with at least one light guide and several electric lines, whose one end is connected to a connector according to claim 2 , the electric lines being conductively connected to the contact elements and the light guide being so positioned in the channel of the light guide holder that the light guide projects out of the body in the plugging direction.
6. Combination cable according to claim 5 , characterized in that the light guide projects out of the body in the plugging direction by at least four times its diameter.
7. Combination cable according to claim 5 , characterized in that the light guide projects out of the body by at least 10 mm in the plugging direction.
8. Combination cable according to claim 5 , characterized in that at least in a portion projecting beyond the body in the plugging direction, the light guide is stiffened by the light guide holder.
9. Combination cable according to claim 5 , characterized in that its other end is connected to a camera head, which has an optoelectronic camera connected to the electric lines and with a focusing device adjustable for focusing purposes and a light guide channel opening in the viewing direction of the optoelectronic camera and in which is located the light guide for the illumination of at least part of the visual range which can be covered by the optoelectronic camera.
10. Combination cable according to claim 9 , characterized in that the camera head has a movable focusing ring, which is connected to the focusing device in such a way that the focusing device is adjustable by moving the focusing ring.
11. Combination cable according to claim 9 , further comprising a switch for operating the optoelectronic camera or other electrical devices provided on a portion of the camera head located in front of the optoelectronic camera in the viewing direction thereof.
12. Socket for a connector according to claim 2 with a socket body for receiving the connector, a socket channel passing through the socket for receiving a portion of a light guide introduced into the connector when the connector is plugged into the socket and with contact elements connectable with electric lines for contacting the contact elements of the connector.
13. Socket according to claim 12 , wherein the socket channel is constructed for receiving the portion of the light guide holder of the connector extending beyond the body.
14. Socket according to claim 13 , wherein the light guide holder includes in a portion located between the contact elements and the end of the light guide holder in the plugging direction that is not rotationally symmetrical to a longitudinal axis of the connector and wherein at least a portion of the socket channel has a cross-section, whose shape corresponds to the cross-section of the non-rotationally symmetrical portion of the light guide holder.
15. Device for feeding light into at least one light guide of a combination cable according to claim 5 with a socket comprising a socket body for receiving the connector, a socket channel passing through the socket for receiving a portion of a light guide introduced into the connector when the connector is plugged into the socket and the contact elements connectable with electric lines for contacting the contact elements of the connector, and a light source positioned in the device in such a way that the light emitted by the light source can be fed into the light guide located in the connector of the combination cable when the connector is plugged into socket.
16. Device according to claim 15 , characterized in that an optical device is provided for focusing the light emitted by the light source onto the end of the light guide.
17. Plug connection system with a connector for a combination cable comprising at least one light guide and several electric lines, and a socket according to claim 12 .
18. Endoscopy system with an optoelectronic camera, a supply and evaluating device with a light source and a combination cable, according to claim 5 , wherein the light guide can illuminate at least part of the visual range of the optoelectronic camera with the light from the light source and the electric lines electrically connect the optoelectronic camera to the supply and evaluating device, wherein the combination cable can be detachably connected to the supply and evaluating device.
19. Connector according to claim 1 , wherein a longitudinal axis of the light guide holder is coaxial with a longitudinal axis of the body.
20. Connector according to claim 2 , wherein the contact elements are positioned on at least one circle coaxial to the light guide holder.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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US11/978,684 US20080058598A1 (en) | 2001-09-03 | 2007-10-30 | Connector for a combination cable |
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10143058.2 | 2001-09-03 | ||
DE10143058A DE10143058A1 (en) | 2001-09-03 | 2001-09-03 | Connector for a combination cable |
PCT/EP2002/009574 WO2003021308A2 (en) | 2001-09-03 | 2002-08-28 | Plug-in connector for a combination cable |
US10/488,525 US7361140B2 (en) | 2001-09-03 | 2002-08-28 | Connector for a combination cable, combination cable connected thereto, socket therefor, device for feeding light, plug connection system and endoscopy system |
US11/978,684 US20080058598A1 (en) | 2001-09-03 | 2007-10-30 | Connector for a combination cable |
Related Parent Applications (2)
Application Number | Title | Priority Date | Filing Date |
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PCT/EP2002/009574 Continuation WO2003021308A2 (en) | 2001-09-03 | 2002-08-28 | Plug-in connector for a combination cable |
US10/488,525 Continuation US7361140B2 (en) | 2001-09-03 | 2002-08-28 | Connector for a combination cable, combination cable connected thereto, socket therefor, device for feeding light, plug connection system and endoscopy system |
Publications (1)
Publication Number | Publication Date |
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US20080058598A1 true US20080058598A1 (en) | 2008-03-06 |
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ID=7697505
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US10/488,525 Expired - Lifetime US7361140B2 (en) | 2001-09-03 | 2002-08-28 | Connector for a combination cable, combination cable connected thereto, socket therefor, device for feeding light, plug connection system and endoscopy system |
US11/978,684 Abandoned US20080058598A1 (en) | 2001-09-03 | 2007-10-30 | Connector for a combination cable |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
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US10/488,525 Expired - Lifetime US7361140B2 (en) | 2001-09-03 | 2002-08-28 | Connector for a combination cable, combination cable connected thereto, socket therefor, device for feeding light, plug connection system and endoscopy system |
Country Status (9)
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US (2) | US7361140B2 (en) |
EP (1) | EP1430344B1 (en) |
JP (1) | JP2005516232A (en) |
KR (1) | KR20040049844A (en) |
AU (1) | AU2002339454A1 (en) |
CA (1) | CA2459223A1 (en) |
DE (1) | DE10143058A1 (en) |
ES (1) | ES2643584T3 (en) |
WO (1) | WO2003021308A2 (en) |
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Also Published As
Publication number | Publication date |
---|---|
US7361140B2 (en) | 2008-04-22 |
KR20040049844A (en) | 2004-06-12 |
AU2002339454A1 (en) | 2003-03-18 |
ES2643584T3 (en) | 2017-11-23 |
US20040266257A1 (en) | 2004-12-30 |
CA2459223A1 (en) | 2003-03-13 |
WO2003021308A3 (en) | 2004-04-22 |
EP1430344A2 (en) | 2004-06-23 |
WO2003021308A2 (en) | 2003-03-13 |
EP1430344B1 (en) | 2017-07-19 |
DE10143058A1 (en) | 2003-03-20 |
JP2005516232A (en) | 2005-06-02 |
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