JPS5883933A - Camera adaptor for endoscope - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an endoscope camera adapter device which is an improved endoscope camera adapter for attaching a camera or a television camera to an endoscope.

Generally, a camera or television camera is attached to a rigid endoscope or a flexible endoscope, and in order to observe or photograph the inside of a body cavity, the camera or television camera is attached to the eyepiece of the endoscope via a camera adapter. I am wearing it.

A conventional example in which a camera is attached to a rigid endoscope using this camera adapter is shown in FIGS. 1 and 2. Figure 1 shows the rigid endoscope, camera adapter, camera, and light source unit? ), and FIG. 2 is a front view of FIG. 1.

In these figures, the camera adapter 1 includes a focusing lens 2, a beam splitter 3 that transmits most of the observation light and splits a small amount of photometry, and this beam splitter 3.
A light receiving element 4 connected to the light receiving element 4 and a signal cord 5 connected to the output end of the light receiving element 4 are installed inside the adapter 1, and a focus ring 6 for moving the focus adjustment lens 2 back and forth in the axial direction is provided on the outer periphery of the adapter 1. , an endoscope fixing/releasing lever 8 for fixing/releasing the camera adapter 1 to/from the rigid endoscope 7 is provided. A camera 9 is detachably attached to the rear end of the camera adapter 1, and the observation light transmitted through the beam splitter 3 is sent thereto.

The signal cord 5 is extended from the camera adapter 1 to the outside and connected to the light source unit 10. This light source unit 10 includes an exposure calculation circuit 11 connected to the input terminal of the signal cord 5, a flash lamp control circuit 12 connected to the output terminal of this exposure calculation circuit 11, and a flash lamp control circuit 12 connected to the output terminal of this exposure calculation circuit 11. A photography flash lamp 13 and an observation illumination lamp 14 whose smoke is extinguished or whose light intensity is set by an output signal are installed inside. A light guide cord 15 connected to the light guide of the rigid endoscope 7 is connected to the light source unit 10 so that observation illumination light and photography illumination light are supplied to the rigid endoscope 7.
In the figure, reference numeral 16 is an X, FP contact code.

However, in the conventional camera adapter 1 as described above, two cords, the photometric signal cord 5 and the light guide cord 15, are placed around the surgeon as shown in FIGS. 1 and 2. Therefore, during operation, these two cords may come into contact with each other, become entangled, or become tangled in the operator's hand during operation, interfering with operation and making quick operation impossible. Ta. Also, camera adapter 1 for shooting
It was difficult to deal with these two cords when cleaning, and the cleaning work could not be facilitated.

The present invention has been made in view of the above-mentioned points, and provides a device capable of photographing by attaching a camera or a television camera via a camera adapter to an endoscope that is connected to a light guide and transmits illumination light. A signal line contact is provided at the front end of the camera adapter, and a contact that makes contact with the contact is provided on the side near the connection end of the light guide that is connected to the endoscope that has a built-in signal line, and is connected to the power source. An object of the present invention is to provide an endoscope camera adapter device that improves operating functionality for the operator and facilitates cleaning by unifying the cords used for the endoscope.

The present invention will be specifically described below with reference to the drawings.

FIG. 3 to FIG. 5 show a first embodiment of the present invention,
Fig. 3 is an explanatory diagram showing the connection relationships among the camera adapter, rigid endoscope, camera, and light source unit in this embodiment, and Fig. 4 shows the camera adapter connected to the rigid endoscope and the integrated unit. Perspective view showing the code 1. FIG. 5 is a partially cutaway sectional view showing the main connection parts of the unified cord connected to both the rigid endoscope and the camera adapter.

In these figures, the camera adapter device has a recess 22 on the distal end side into which the rear end of the rigid endoscope 21 is inserted and fixed, and a signal line connection section 23 is connected to the outer periphery of the distal end in which the recess 22 is formed. The provided camera adapter 24 and the rigid endoscope 21
When the camera adapter 24 is attached to the camera adapter 24, its distal end is connected to the light guide fitting 26 protruding from the side of the eyepiece 25 of the rigid endoscope 21. It is composed of a signal line built-in light guide 27 which is unified by providing a signal line connecting member 27A having a convex portion on the tip side, and the other end of this signal line built-in light guide 27 is
It is connected to a light source unit 28.

The camera adapter 24 includes, as in the conventional example described above,
Most of the observation light passes through the focusing lens 31 and is supplied to the camera 32 or television camera mounted on the rear end side, and a small amount of photometry is divided and supplied to the light receiving element 33 provided on the side. A beam spiriter 34 is housed therein.

A focus ring 3 for moving the focus adjustment lens 31 back and forth in the axial direction is provided on the outer periphery of the camera adapter 24.
5 and the camera adapter 24 is fixed to the rigid endoscope 21.
There is a fixing release lever 36 for releasing the lock, and an X on the outer circumference of the rear end.
An FP contact cord 37 is provided.

In the camera adapter 24 in this embodiment, the signal cord 38 connected to the output end of the light receiving element 33 has a contact point 40 fixed to a notch recess 39 on the outer periphery of the front end of the opening recess 22 of the camera adapter 24. The formed connection part 2
3, and is configured such that when the camera adapter 24 is attached to the rigid endoscope 21, the connecting portion 23 is located on the side of the light guide metal portion 26. is a feature.

In this case, in the light guide with a built-in signal line in this embodiment, the connection member 27A at the tip is connected to the light guide rod metal part 26.
When connected to the connecting member 27A, the convex portion 41 protruding from the side of the connecting member 27A is inserted into the notch recess 39 (for example, as shown in FIG. ) is fitted and connected to the tip of the signal line built into this light guide 27, and is fixed to the convex portion 41 to form a contact point 42.
, 42 are configured to be in contact with the contacts 40, 40 to enable electrical connection.

The contacts 40, 40 provided in the notch recess 39 are as follows:
For example, as shown in FIG. 4 or FIG. 5, a signal line is formed by gluing and fixing elongated plate-shaped conductor pieces in parallel to the cutout recess 39, and is provided so as to come into contact with each of these contacts 40, 40. A parallel conductor piece is also fixed to the protrusion 41 provided on the side of the connecting member 27A of the built-in light guide 27, and the contact 42
, 42 are formed.

A connection ring 43 with a screw hole for fixing is provided on the end side of the connection part at the tip of the signal line built-in light guide 27, and this connection ring 43 is connected to a threaded part formed at the end of the light guide metal part 26. When screwed together, the two contacts 40, 40 and 42, 42 come into contact with each other and are electrically connected. Note that reference numeral 44 denotes a fixing claw that is used to fix the rigid endoscope 21 by coming into contact with the outer periphery near the end of the eyepiece 24 by operating a fixing release lever 36 provided on the outer periphery of the camera adapter 24. , and can be released from the fixation by separating them.

On the other hand, at the other end of the light guide 27 with a built-in signal line, the built-in signal line is separated near the end and inserted into the light guide connector and signal line connector provided in the light source unit 28, respectively. configured to be connected. This light source unit 28 includes an exposure amount calculation circuit section connected to the signal line connector section, a flash lamp control circuit 46 connected to the output end of this exposure amount calculation circuit 45, and a flash lamp control circuit 46 connected to the output end of this exposure amount calculation circuit 45, as in the conventional example described above. A photographic flash lamp 47 and an observation illumination lamp whose brightness or light intensity is set by the output signal of the flash lamp control circuit 46 are provided inside.

In the embodiment configured in this way, the rigid endoscope 21
The camera adapter 2 in this embodiment is attached to the eyepiece section 24 of
The rigid endoscope 21 is fixed with the fixing claws 44 by operating the fixing release lever 36.

A camera 32 or the like is attached to the camera adapter 24 from the rear end side. After that, connect the connecting member 27A of the light guide 27 with a built-in signal line to the light guide rod metal part 2 from below, for example.
6, connect, rotate the ring 43, and connect the connecting member 2.
7A is screwed and fixed, the contacts 42, 42 protruding from the side of the connecting member 27A slide from below to above the notch recess 39 of the camera adapter 24, and the contacts 40, 42 fixed in the notch recess 39, 40 at a predetermined position.

The other end of the signal line built-in light guide 27 can be connected to the signal line connector section and the light guide connector section of the light source unit 2, so that it can be photographed using the camera 32 or the like.

In this case, since the cord extending outward from the camera adapter 24 is the length of the light guide 27 with a built-in signal line, the operator can easily attach the signal line and the light guide, and it is easier to attach the signal line and light guide than the conventional device. Operations etc. can be performed easily. Further, when cleaning, since there is only one cord, the cleaning work can be easily performed.

FIG. 6 shows a second embodiment in which the camera adapter 24 of the first embodiment is applied to a television camera adapter 52 that accommodates a television camera 51 in the inner thigh.

That is, in this embodiment, a television camera adapter 52 is constructed by arranging and accommodating a television camera 51 behind the beam splitter 34 in the camera adapter 24 in the first embodiment, and the television signal cord 53 of this television camera adapter 52 is , and is configured by the same means as that of connecting to the light source unit 28 via the signal line built-in light guide n.

That is, as in the case of the television signal code 53 tllj and the signal code 38, it is connected to the contacts fixed in parallel to the four notches formed at the front end of the television camera adapter 52, while the light with built-in signal line in this embodiment The guide 54 is a light guide for transmitting illumination light, and has a built-in signal line connected to the signal cord 3 of the light receiving element 33 and the television signal cord 53 of the television camera 51. This light guide 54 with a built-in signal line is provided with a connection member 54A-K on the distal end side, as in the case of the first embodiment described above, and a connection member 54A-K on the side thereof is attached to the side wall of the notch recess. In addition, contacts are provided on the contacting convex portion 56 to make contact with the contacts at each end of the signal cord 38 and the television signal cord 53 for conduction. The other end of this light guide with a built-in signal line is inserted into and connected to the light guide connector part and the signal line connector part of the light source unit 28 as described above, and the TV camera signal is branched near the end part. The line is connected to a television receiver 57 for monitoring. This television receiver has 57 units and a video tape recorder has 58 units.
can be connected, and information recorded by the video tape recorder 58 can be played back by the television receiver 57.

In this second embodiment, as in the first embodiment, only one cord is extended from the TV camera adapter 52 to the light guide 54 with a built-in signal line, so that the operator can operate it more easily than in the conventional device. etc., it can be easily done,
Cleaning work also becomes easier.

Incidentally, in the above embodiment, the case where the present invention is attached to (or attached to) the rigid endoscope 21 is described, but it goes without saying that the present invention can also be applied to a flexible endoscope.

As described above, according to the present invention, by the operation of connecting the light guide to the light guide fitting part of the endoscope, the signal line built into the light guide is also connected to the camera adapter. Because of this structure, the cords extending outward from the camera adapter are unified into a single cord, which facilitates connection operations and photographing operations using the camera, and also facilitates cleaning operations.

[Brief explanation of the drawing]

1 and 2 show a conventional example, FIG. 1 is an explanatory diagram showing the connection relationship between a rigid endoscope, a camera adapter, a camera and a light source unit, and FIG. The front view and FIGS. 3 to 5 show the first embodiment of the present invention, and FIG. 3 is an explanatory diagram showing the connection relationship between the rigid endoscope, the camera adapter, the camera and the light source unit, FIG. 4 is a perspective view showing the rigid endoscope and the camera adapter device of the first embodiment, and FIG. A partial cutaway sectional view, FIG. 6, is an explanatory diagram showing the second embodiment. 21... Rigid endoscope 22... Four parts 23...
Connection part 24...Camera adapter 25...
Eyepiece part 26... Light guidero metal part 27
, 54... Light guide with built-in signal line 28... Light source unit) 3]... Lens 32... Camera
3:3... Light receiving element 34... Beam splitter O... Signal code 39... Notch recess 4 (
1, 42...Contact 41.56...Protrusion 43
, 55... Connection ring 45... Exposure calculation circuit
46... Flash lamp control circuit 5
1...Television camera 52...Television camera adapter 53...Television signal cord 57...Television receiver 5B...Video tape recorder

Claims (1)

[Claims] A camera adapter for attaching and detaching a camera or television camera to an endoscope through which illumination light for observation, observation, and photography is transmitted via a light guide, the camera adapter having a recess into which the endoscope is attached. The light guide is equipped with a camera adapter provided with a signal transmission connection part on the end face, and a light guide containing a built-in signal transmission line with a connection member protruding from the side of the distal end of the light guide, and the light guide is connected to the endoscope. When installed,
1. An endoscope camera adapter device, characterized in that the connecting member on the distal end side and the connecting portion are electrically connected.