JPH04129522A - Endoscope device - Google Patents

Abstract

PURPOSE:To finely adjust the suction quantity of the articles inside a body and improve safety by allowing an opening/closing control means for the passage of a communication pipe to collapse the communication passage according to the displacement quantity of a cam which revolution-shifts in interlocking with a motor and controlling the opening/closing quantity of the passage, together with a switch means for controlling the revolution quantity of a driving motor. CONSTITUTION:The pressing part 18a of a switch means 18 is pressed. At this time, a connecting rod 18b revolves by the displacement quantity portion of the pressing part 18a, and the position of the connecting rod 18b is detected by a position detecting pattern 18c. The detected position signal is transmitted to a position detection pattern 10a, PC plate 16 for position detection, and a motor 11 through a control circuit 17. Then the motor 11 revolves, and a cam gear 10 and a cam 13 revolve to the position of the position detection pattern 10a of the cam gear 10 side corresponding to the position detection pattern 18c on the switch means 18 side. At the same time, a suction tube 7 is pressed by an opening/closing lever 12. Accordingly, the suction tube 7 is collapsed, and the opening/closing quantity of the passage is controlled.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Field of Application) The present invention relates to an endoscope device that is inserted into a living body and performs suction of internal substances, air supply, and water supply into the body.

(Prior Art) Conventionally, this type of endoscope apparatus will be described with reference to FIGS. 5 to 7.

FIG. 5 shows a configuration diagram of the endoscope device. In the drawing, 1
is the main body of the device. A universal cord 3 is connected to the device main body 1 via a connector 2. A guide section 5 is connected to the uniform monkey cord 3 via an operating section 4. The operation section 4 is provided with an operation lever 48 for controlling the direction of the tip of the guide section 5, and a forceps port 4b for inserting treatment instruments, medicines, etc. for collecting internal organs, polyps, etc. into the body. There is. Reference numeral 6 is a suction device for sucking out excess matter inside the body. This suction device 6
is connected to the universal cord 3 via the suction tube 7 and the connector 2 in this order, and an electromagnetic valve 8 for opening and closing the passage within the suction tube 7 is installed in the middle of the suction tube 7 .

FIG. 6 is a sectional view of the electromagnetic valve 8. That is, this electromagnetic valve 8 has an iron core 8b that operates in the axial direction between the solenoids 88 and a fixing member 8c having a trowel-shaped cross section, and between one end surface of these iron cores 8b and the fixing member 8C, A suction tube 7 is interposed. The passage of the suction tube 7 is closed by the pressure of the iron core 8b, and opened by the release of the pressure. At this time, the iron core 8b operates in conjunction with a switch means 9, which will be described later.

FIG. 7 shows a sectional view of the switch means 9.

In the drawings, 9a is a switch part that is interlocked with the pressing part 9b, and 9C is a spring that biases the pressing part 9b and returns the suppressing part 9b to its original position.

Therefore, in the endoscope apparatus having such a configuration, the switch section 9a is normally in the OFF state, and the iron core 8b is in the OFF state.
The suction tube 7 is crushed and the passage is closed due to the pressure exerted by the suction tube 7. Therefore, when the suppressing part 9b is pressed, the switch part 9a is turned on, the suppression by the iron core 8b is released, the passage of the suction tube 7 is opened, and suction starts.

(Problem to be solved by the invention) However, in the conventional endoscope device described above,
Since the state of the passage of the suction tube 7 can only be controlled in two modes: open and closed, delicate adjustment of the amount of suction cannot be made. For this reason, there is a problem in that suction with a fast rise is performed at the same time as suction is started, and the body wall is adsorbed and the body wall is damaged.

In view of the above-mentioned problems, an object of the present invention is to provide a highly safe endoscope device that can finely adjust the amount of suction of internal substances.

[Structure of the Invention] (Means for Solving the Problems) In order to achieve the above-mentioned objective 1, the present invention connects the guide portion inserted into the living body, and creates a path for the internal body matter to be sucked and a passageway into the body. An opening/closing control means for controlling the opening/closing of the passage of the said conducting pipe is provided in the middle of the conduction pipe serving as a passage for air and water supply, and said opening/closing control means controls a drive motor and the amount of rotation of said motor. The apparatus includes a switching means for controlling, and a cam that is rotationally displaced in conjunction with the motor, and crushes the conductive pipe in accordance with the amount of displacement of the cam to control the amount of opening and closing of the passage.

(Function) In the present invention, since the amount of opening and closing of the passage of the conduction tube is controlled according to the amount of displacement of the cam rotationally driven by the motor connected to the switch means, the amount of suction, the amount of air supplied, and the amount of air supplied by the switch means are controlled. Allows for fine adjustment of water volume.

(Embodiment) An embodiment of the endoscope apparatus of the present invention will be described based on FIGS. 1 to 4, with the same reference numerals assigned to the same components as in the conventional example.

FIGS. 1 and 2 are configuration diagrams of passage opening/closing control means in the first embodiment. In the drawing, 10 is a cam gear, and this cam gear 10 is meshed with a rotor 11g of a motor 11. A cam 13 engaged with an opening/closing lever 12 is coaxially fixed on the surface of the cam gear 10. 14 is a fixing member, and a suction tube 7 is interposed between the opening/closing lever 12 and the fixing member 14. Furthermore, the position detection PC board 16 is connected to the cam gear 10.
It is arranged so that it faces the back side of.

Then, the cam gear 1 on the position detection PC board 16
0, a conductive position detection pattern 1
A position detection pattern 10a is formed on the back surface of the cam gear 10 so as to be able to contact the position detection pattern 16a. PC board 16 for position detection
, the position detection button 10a, and the motor 11 are connected via a control circuit 17 to a switch means 18 disposed on the endoscope side. The switch means 18 includes a pressing portion 18a1 connected to the pressing portion 18a, and a suppressing portion 18a.
The connecting rod 18b rotates in response to the amount of displacement of the connecting rod 18b, and the position detection pattern 18c detects the position of the connecting rod 18b.The connecting rod 18b and the position detection pattern 18c are connected to the control circuit 17. In addition, 12a and 18
d is a spring for returning the opening/closing lever 12 and the connecting rod 18b to their original positions.

Next, the operation of the opening/closing control means having such a configuration will be described.

First, the switch means 18 disposed on the endoscope side
Press the pressing part 18a of. At this time, the connecting rod 18b rotates by the amount of displacement of the suppressing portion 18a, and this connecting rod 18b
The position of is detected by the position detection pattern 18c.

Therefore, the detected position signal is transmitted to the position detection button 108% position detection PC board 16 and the motor 11 via the control circuit 17. Thereafter, as the motor 11 rotates, the cam gear 10 and the cam 13 are rotated.
Cam gear 10 corresponding to position detection pattern 18c on side 8
Rotate to the position of the side position detection pattern 10a. At the same time, the suction tube 7 is opened and closed by the opening/closing lever 12.
is pressed. As a result, the suction tube 7 is crushed and the amount of opening and closing of the passage is controlled. In this case, the position detection patterns IQa and 16a come into contact, and the position of the cam 13, that is, the amount of rotation of the cam gear 10, is detected by the position detection PC board 16 and fed back to the switch means 18 via the control circuit 17. Ru. Note that such position detection can also be performed using light, a piezoelectric element, or the like.

3 and 4 are configuration diagrams of passage opening/closing control means in the second embodiment.

That is, this opening/closing control means includes a pressure switch 19 provided in the operating section 4, a motor 11 disposed in the middle of the suction tube 7, an eccentric cam 20 fixed to the rotor 11a of the motor 11, It is composed of a fixed part 414. Therefore, by sequentially transmitting the pressure signal from the pressure switch 19 to the motor 11 through the universal cord 3 and the main body 1 of the connector 23, and controlling the rotation angle of the motor 11, the rotation angle between the eccentric cam 20 and the fixed member 14 is controlled. The amount of suction tube 7 between the suction tubes 7 and 7 is adjusted, that is, the amount of opening and closing of the passage within the suction tube 7, thereby controlling the amount of internal matter suctioned. In addition, 5 is a guide part.

Thus, in this embodiment, the motor 11 connected to the switch means 8 or the pressure switch 19 rotates the cam 13 or the eccentric cam 20 to control the opening/closing amount of the passage in the suction tube 7, so that internal objects can be sucked out. quantity switch means 18
Or easily fine-tuned with a single pressure switch.

It goes without saying that this embodiment is not limited to controlling the amount of suction of internal substances, but can also be applied to controlling the amount of air and water fed into the body.

[Effects of the Invention] As explained above, according to the present invention, the amount of collapse of the conductive pipe, that is, the amount of opening and closing of the passage, is controlled by the switch means in accordance with the amount of displacement of the cam rotated by the motor connected to the switch means. Therefore, since the amount of opening and closing of the passage can be finely adjusted by the switch means, the amount of suction of objects in the eye, the amount of air fed, and the amount of water fed can be finely adjusted, and the operability of the device can be improved. Therefore, the above-mentioned problems can be solved by shortening the diagnosis time, preventing adsorption of the body wall at the start of suction, and providing a highly safe inner 151M device.

[Brief explanation of drawings]

1 to 4 show an embodiment of the endoscope apparatus of the present invention, and FIGS. 1 and 2 are block diagrams of the opening/closing control means in the first embodiment, and FIGS. The figure is a block diagram of the opening/closing control means in the second embodiment, FIGS. 5 to 7 show the conventional example, FIG. 5 is a block diagram of the endoscope apparatus, FIG. FIG. 7 is a sectional view of the switch means. 7... Suction tube, 10... Cam gear, 10a,
16a...Position detection pattern, 11...Motor, 1
2... Opening/closing lever 13... Cam, 14... Fixing member, 16... PC board for position detection, 18... Switch means, 19... Pressure switch, 20...
...Eccentric cam.

Claims (1)

[Claims] The amount of opening and closing of the passage of the conduction tube is controlled in the middle of the conduction tube, which is connected to the conductor part inserted into the living body and serves as a passageway for internal objects to be aspirated and a passageway for supplying air and water into the body. An opening/closing control means is provided, and the opening/closing control means includes a drive motor, a switch means for controlling the amount of rotation of the motor,
An endoscope apparatus comprising: a cam that is rotationally displaced in conjunction with the motor, and crushes the conduction tube according to the amount of displacement of the cam to control the amount of opening and closing of the passage.