JPS58136326A - Connector apparatus 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 connection device for connecting an endoscope and a television camera.

When observing the inside of a body cavity using an endoscope, there are various observation methods such as television, photography, or naked eye observation, and these observation methods are used depending on the situation at the time. There is. Therefore, in endoscopic observation, it is important to be able to quickly and reliably select the various observation means described above.

Conventionally, in order to enable observation using an endoscope using multiple observation means, a connection device that allows connection of a television camera and observation with the naked eye has been provided at the eyepiece of the endoscope. There is.

However, with such a connecting device, when taking a photograph of what is being observed, it is necessary to remove the connecting device from the eyepiece of the endoscope and attach a still camera to the eyepiece. Not only is it not possible to do it quickly, but
It has been proposed to provide a wa part that can be attached to the observation area to be photographed when the connecting device is removed R#, and to enable naked eye observation and photography using this eyepiece part.

However, if the connecting device is provided with an eyepiece, as a spectroscopic optical system provided inside it! Since the spectral ratio of the rhythm is usually low in sensitivity of the television camera, more light must be separated on the television camera side than on the eyepiece side. Therefore,! & Although there is no problem with naked eye observation at the eyepiece, when a still camera is attached to this eyepiece, there is a problem in that a sufficient amount of light cannot be obtained, making it impossible to take good photographs. That is, simply providing an eyepiece to which a still camera can be attached to the connecting device does not allow reliable photography.

The object of the present invention is to provide a connecting device for an endoscope, which has been developed based on the above-mentioned circumstances, and which automatically increases the number of connections and enables reliable photography.

An embodiment of the present invention will be described below with reference to the drawings.

1 in the figure is an endoscope. This wedding celebration-1 includes an operating section 3 provided with an eyepiece section 2, and an insertion section 4 connected to this operating section 3.
1. A television camera 6 can be connected to the eyepiece section 2 of the endoscope @X by means of a connecting device 5. This television camera 6 is connected to a control device # by a first cable 2, and a television monitor 10 is connected to this control device 8 by a second cable 9. Therefore, the electric signal from the television camera 6 is amplified by the # control device 8 and becomes a video signal, and a composite gI signal obtained by adding a synchronization signal to this video signal is sent to the television monitor 10. The image will now appear.

On the other hand, the connecting device 5 is constructed as shown in FIGS. 2 and 3. That is, the main body 11 in the figure is cylindrical and has a flange 12 protruding from an axially midway portion of its inner circumferential surface.

A mounting tube 13 that fits into the endoscope 1 (D@eye part 2) is provided inside one end of the main body 1 via a spacer 14.

Further, within the main body 11, there is provided a support 15 whose peripheral portion on one end is fixed to the flange 12 and whose one side is formed into an arcuate surface 15a. This support body 15 is formed with a nine-arc-shaped mounting #16 that is open to the other end surface and the above-mentioned arcuate surface, and a mounting groove 16 that coincides with the center of the main body 11.
A through hole 17 is bored in the center of the support body 15 from the bottom of the mounting groove 16 in the thickness direction of the support body 15 .

A lens 18 is held in this through hole 17 by a ring 19. Furthermore, a frame-shaped first movable body 20 and a second movable body 21 are slidably provided in the mounting #$16. The first movable body 20 holds a first prism 22 as a spectroscopic optical system, and the second movable body 20 holds a first prism 22 as a spectroscopic optical system.
1 also has a second part as a spectroscopic optical system! Rhythm 23 is maintained. The first prism has a spectral ratio of 7:3, transmitting 70% of the light from the in-house aflAI and reflecting the remaining 30 lights, and the second prism 23 has a spectral ratio of 5:5. Further, the first movable body 20 and the second movable body 21 are integrally formed by two sides of a connecting body 241, one surface of which is exposed on the arcuate surface 15 of the support body 15 and has a pentagonal cross section. is connected to. A biasing rod 25 is connected at one end to this connecting body 24a.

The other end of the biasing rod 15 is formed on the inner surface of the main body 11 and is pivotally connected to a nine recess JJa by a pin 26. Further, a spring 27 is stretched between the biasing rod 25 and the inner surface of the main body II, and the spring 21 biases the biasing rod 25 in the direction indicated by the arrow in FIG. 3. Therefore, the spring 27 causes the first and second movable bodies 20. When ill is energized and one side of the second movable body 21 hits one end of the mounting groove 16, the first movable body 10 is located at the center of the mounting groove 16 as shown in FIG. , i.e. the first! The rhythm 22 is now facing the lens 18. Also, the first and second movable bodies 2 are placed in a state where one side of the first movable body 20 is in contact with the other end of the mounting groove 16 against the biasing force of the spring 27.
If you displace 0.21, the second! Rhythm 23 is Ren f
It is designed to face 1B.

Further, the support body 15 has a first ! Rhythm 22 masu is the second! These when Rhythm 23 faces each other! A guide hole 28 is provided along the traveling direction of the light reflected by the rhythms 22 and 23. This outlet hole 28 is provided with a light guide tube 30 that connects one end to which an optical system is connected. Reflection fit that converts the direction of the guided light to right angles! 31 is provided, and this connecting portion 32 is provided with an eyepiece portion 34 that can be freely focused using a diopter ring 3S. A still camera 35 shown in FIG. 1 can be detachably attached to this eyepiece 34. Further, a rotating ring 36 shown in FIGS. 5 and 6 is rotatably built into the eyepiece portion 34. An engaging protrusion 36* is provided on the rotating ring 36, and the engaging protrusion S6a protrudes from a through hole 37 formed in the end face of the eyepiece 34. Additionally, a wire 38 is fixed at one end to the outer peripheral surface of the rotating ring 36. The other end of the wire 38 is guided into the main body 11 through a passage 39 formed in the light guide tube 30 . Then, the wire 5aFi is protruded from the upper surface of the support 15 in the main body 11 and is engaged with the nine 40 and bent, and then the first movable body 109 of the second movable body 21
Its end is attached to the side opposite to the AI.

On the other hand, the still camera 35 is connected to the eyepiece section 34 of connection *t5 as shown in Figure WJ7! Runt part 4
A locking hole 42 is formed in the locking hole 42. When the still camera 35 is connected to the eyepiece J4, an engaging protrusion 361 protruding from the rotating ring 36 is inserted into the locking hole 42. It appears to be engaged.Then, the still camera j
5 to the lll1sJ4 and rotate the still camera 15 from an inclined state to a state parallel to the axis of the light guide jO as shown by the chain line in FIG. The above-mentioned rotating cylinder j6 engages with the movement
A. Cooperate through meetings. The wire S8 is wound around the outer peripheral surface of the rotating ring S6 as shown in FIG. 6, and the portion bent by the pin 40 becomes a straight line as shown in FIG. and second movable body 2
1 slides in the mounting groove 16 against the biasing force of the spring 21, and the second movable body 21, that is, the second! When the rhythm 21 faces the lens 18 and is removed by rotating the still camera 15 from the contact @@S4 in the opposite direction, the wire 18 runs that much and is attached by the restoring force of the spring 21. The first movable body 20 is connected to the lens 1 via the lever 25.
The first and second movable bodies 20, 21 slide to a state where they face 8. That is, the wire 38, the rotating ring 36,
The spring 21 and the biasing rod 25 constitute a drive mechanism that converts and drives the first and second grisms zx and is in accordance with the operation of attaching and detaching the still camera 35 to and from the eyepiece J4.

Furthermore, a ring-shaped connecting plate 43 is attached to the other end of the main body 11 of the connecting device 5, with the peripheral portion fixed to this end surface. The central part of this connecting plate 43 has screws 4 on the outer circumferential surface.
A cylindrical portion 45 having a number 4 formed thereon is provided protrudingly, and the television camera is formed between one end of the case 46 and is attached to this cylindrical portion 46 by screwing into a nine screw hole 4r. .

Inside the case 46 of the television camera 6, the screw hole 41 and the first movable body sot9 are arranged so that the lens INK image pickup surface 4g, which is held in the connecting device 5 via the second square movable body xxt, faces an image pickup tube. 49 is stored.

Next, the operation of the above configuration will be explained.

When observing the inside of a body cavity with the endoscope 1 and displaying the observed results on the television monitor 10, the still camera 16 is removed from the eyepiece 14 of the connecting device 5 as shown in FIGS. 2 and 3. do. In this state, the spring 21
Since the first and second movable bodies 10.11 are biased via the biasing rod 25 by the restoring force of the first!, as shown in FIG. Rhythm 2z faces lens flB and is in good condition. Therefore, from the eyepiece 1 of the endoscope 1 to the connecting device 5
Of the light that enters, 70- is the first! It passes through the rhythm 22 and enters the image pickup tube 49 of the television camera 6, and the mysterious 30-
is reflected by the first prism 22 and passes through the outlet hole 28, the light guide tube JO, and the connecting portion 32 to the eyepiece portion 3 of the connecting device 5.
Guided by 4. Therefore, a sufficient amount of light will be incident on the television camera 26, and a clear observation image will be displayed on the television monitor 10. Further, although only 30 - of light is guided to the eyepiece 14 of the connecting device 6, in observation with the naked eye, even this amount of light does not pose any problem in observation.

On the other hand, when photographing the observation unit from the endoscope 1, the still camera 35 is attached to the eyepiece 34 of the connecting device 5 at a predetermined angle via its mount 41t, as shown by the chain line in FIG. The connection is fixed by moving them together. Then, at this time, the engagement protrusion S6 of the rotary ring 36 provided in the eyepiece part J4 is provided in the first runt part 41 and in the ninth locking hole 42.
& is engaged, this rotation ring 36 rotates together with the still camera S5. As a result, the rotating ring J
6, the wire 38 with one end fixed to the rotary ring 36 is stretched around the outer peripheral surface of the rotary ring 36 as shown in FIG. The portion becomes straight as shown in FIG. Ninth, this wire J8 connects the eleventh second movable body 10.
21 slides in the ferruled groove 16 against the restoring force of the spring 21, and is held by the second oJ moving body 11.
S faces the lens 1s and is in good condition. Since the second prism 2J faces the lens 18, 50- of the light entering the connecting device 5 from the eyepiece 2 of the endoscope 1 is transmitted to the second! It passes through the rhythm IJ and enters the image pickup tube 49 of the television camera 6, and the remaining 5096 are transmitted through the second! It is reflected by the rhythm IJ and guided to the eyepiece section 14 of the connecting device 5. Hence the above! Since a large amount of light is guided to the eyepiece 14 during intraocular observation, it is possible to take photographs using a still camera 3j connected to the eyepiece 34. Although the amount of light incident on the image pickup tube 49 of the television camera 6 is reduced compared to before, the television monitor 10 still displays an observation image in sufficient condition to judge the observation area to be photographed by the still camera 35. can be projected.

After photographing is completed in this way, when the still camera '36 is removed from the eyepiece section 14 by rotating it in the opposite direction to the direction in which it was connected and fixed, the wire 38 becomes slack and the spring 21 is removed.
Due to the restoring force, the 11th second movable body 2o, xi slides in the castle groove 16, and as shown in FIG.
'lJism 22 faces lens 18.

That is, according to the above configuration, by attaching and detaching the still camera 35 to the eyepiece section 34 provided in the connecting device 5, the $1111. Second! The rhythms 21 and 111 can be automatically converted, and when the still camera J5 is attached to the eyepiece section 34, the amount of light directed to the 4111 section 14 can be increased to allow good photographic taking.

It should be noted that the present invention is not limited to the above-mentioned embodiment, and for example, the spectroscopic optical system may be an optical system other than the optical grism, such as an optical system such as a 9-7 grism. (9) The spectral ratio of the spectral optical system may be different from the above example depending on the performance of the still camera in the television camera 2.

As mentioned above, in this release 911, a still camera can be attached to the connection device that connects the endoscope and the television camera [Part 11, the spectral ratios to the television camera side and the eyepiece side are different. Since one spectroscopic optical system and a drive mechanism that operates in response to the operation of attaching and detaching the still camera to the eyepiece and converts and drives the plurality of spectroscopic optical systems are provided, the connecting device can be removed from the endoscope. A still camera can be attached to the eyepiece without the need for a camera, and at this time the spectroscopic optical system is automatically converted by the drive mechanism.
The amount of light directed toward the eyepiece increases, allowing better photographic performance. That is, it is possible to quickly and reliably take a photograph of an observed image using an endoscope.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and Fig. 1 is a configuration diagram of the payload, Fig. 112 is a vertical cross-sectional view of the connecting device, Fig. 3 is a cross-sectional view of the same, and Fig. 184 is a still camera attached to the eyepiece. FIGS. 5 and 6 are a cross-sectional view of the connecting device when
The figure is a perspective view of a still camera. 1... Endoscope, 6... Television camera, xi, zs.
...! Rhythm (spectroscopic optical system), 25... Biasing rod (drive mechanism), 21... Spring (drive mechanism), 34... Eyepiece of connecting device, 35... Still camera, 16...・
(9) Rolling ring (drive mechanism), 38...Y 5 (drive l/mechanism). Applicant's agent Patent attorney Takehiko Suzue Figure 1

Claims (1)

[Claims] In a connection device that connects an endoscope and a television camera,
This connection device includes an eyepiece to which a still camera can be attached, a plurality of spectroscopic optical systems with different spectral ratios to the TV camera side and the eyepiece side, and a still camera to the eyepiece. A connecting device for an endoscope, characterized in that it is provided with a drive mechanism that operates in response to an operation for attaching and detaching, and converts and drives the plurality of spectroscopic optical systems.